testing 123

Fixes a memory leak
Added nodes matching traits
2022-08-17 13:28:56 +01:00 · 2022-08-04 14:37:07 +01:00 · 2022-08-01 21:33:55 +01:00 · 2022-07-17 17:53:14 +01:00 · 2022-07-13 20:39:03 +01:00 · 2022-07-13 19:45:32 +01:00
186 changed files with 62148 additions and 4270 deletions
@@ -7,49 +7,67 @@
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 		59F9EAF92808BB5F00188ACB /* IJSVGViewBox.m in Sources */ = {isa = PBXBuildFile; fileRef = 59F9EAF72808BB5F00188ACB /* IJSVGViewBox.m */; };
 		59FCC09427F2394D00BB924E /* IJSVGRootNode.h in Headers */ = {isa = PBXBuildFile; fileRef = 59FCC09227F2394D00BB924E /* IJSVGRootNode.h */; settings = {ATTRIBUTES = (Public, ); }; };
@@ -145,14 +163,26 @@
 /* End PBXBuildFile section */

 /* Begin PBXFileReference section */
+		590AA08B280DDD90002BBE12 /* IJSVGFilter.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = IJSVGFilter.h; sourceTree = "<group>"; };
+		590AA08C280DDD90002BBE12 /* IJSVGFilter.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = IJSVGFilter.m; sourceTree = "<group>"; };
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+		590AA090280DDDA3002BBE12 /* IJSVGFilterEffect.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = IJSVGFilterEffect.m; sourceTree = "<group>"; };
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+		590AA095280DE668002BBE12 /* IJSVGFilterEffectGaussianBlur.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = IJSVGFilterEffectGaussianBlur.m; sourceTree = "<group>"; };
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 		590EB7A327F637EF0047CECF /* IJSVGTransformLayer.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = IJSVGTransformLayer.m; sourceTree = "<group>"; };
+		5910A9A428427AD600BD1F03 /* IJSVGMask.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = IJSVGMask.h; sourceTree = "<group>"; };
+		5910A9A528427AD600BD1F03 /* IJSVGMask.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = IJSVGMask.m; sourceTree = "<group>"; };
+		5910A9A8284377D600BD1F03 /* IJSVGClipPath.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = IJSVGClipPath.h; sourceTree = "<group>"; };
+		5910A9A9284377D600BD1F03 /* IJSVGClipPath.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = IJSVGClipPath.m; sourceTree = "<group>"; };
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+		5926079D287D6C1000E93B09 /* IJSVGFeatureFlags.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = IJSVGFeatureFlags.h; sourceTree = "<group>"; };
+		5926079E287D6C1000E93B09 /* IJSVGFeatureFlags.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = IJSVGFeatureFlags.m; sourceTree = "<group>"; };
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 		594A10D9248D7C90001A3181 /* NSImage+IJSVGAdditions.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = "NSImage+IJSVGAdditions.m"; sourceTree = "<group>"; };
 		594CF46F238FF38E009B251B /* IJSVG.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = IJSVG.framework; sourceTree = BUILT_PRODUCTS_DIR; };
@@ -160,36 +190,42 @@
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+		5955731D286C643900156047 /* IJSVGTileLayer.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = IJSVGTileLayer.h; sourceTree = "<group>"; };
+		5955731E286C643900156047 /* IJSVGTileLayer.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = IJSVGTileLayer.m; sourceTree = "<group>"; };
+		595BA91A280EB29B00AD1C89 /* IJSVGFilterLayer.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = IJSVGFilterLayer.h; sourceTree = "<group>"; };
+		595BA91B280EB29B00AD1C89 /* IJSVGFilterLayer.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = IJSVGFilterLayer.m; sourceTree = "<group>"; };
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 		59A24EBB23F480EA0090C374 /* IJSVGUnitSize.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = IJSVGUnitSize.m; sourceTree = "<group>"; };
+		59AC86582810156B00CD5685 /* IJSVGThreadManager.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = IJSVGThreadManager.h; sourceTree = "<group>"; };
+		59AC86592810156B00CD5685 /* IJSVGThreadManager.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = IJSVGThreadManager.m; sourceTree = "<group>"; };
+		59E6690B287D6C810085EDF5 /* IJSVGFeatureFlag.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = IJSVGFeatureFlag.h; sourceTree = "<group>"; };
+		59E6690C287D6C810085EDF5 /* IJSVGFeatureFlag.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = IJSVGFeatureFlag.m; sourceTree = "<group>"; };
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-		59EB756923905F6B00F5AE63 /* IJSVGDef.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGDef.m; sourceTree = "<group>"; };
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 		59EB756C23905F6B00F5AE63 /* IJSVGCommandQuadraticCurve.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGCommandQuadraticCurve.m; sourceTree = "<group>"; };
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-		59EB757123905F6C00F5AE63 /* IJSVGColorList.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGColorList.m; sourceTree = "<group>"; };
+		59EB757123905F6C00F5AE63 /* IJSVGTraitedColorStorage.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGTraitedColorStorage.m; sourceTree = "<group>"; };
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-		59EB757523905F6C00F5AE63 /* IJSVGStyle.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGStyle.m; sourceTree = "<group>"; };
+		59EB757523905F6C00F5AE63 /* IJSVGStyleSheetStyle.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGStyleSheetStyle.m; sourceTree = "<group>"; };
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-		59EB757C23905F6C00F5AE63 /* IJSVGFontConverter.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGFontConverter.m; sourceTree = "<group>"; };
 		59EB757D23905F6C00F5AE63 /* IJSVGImageRep.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGImageRep.m; sourceTree = "<group>"; };
 		59EB757E23905F6C00F5AE63 /* IJSVGCommandQuadraticCurve.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IJSVGCommandQuadraticCurve.h; sourceTree = "<group>"; };
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@@ -199,13 +235,11 @@
 		59EB758323905F6C00F5AE63 /* IJSVGColor.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IJSVGColor.h; sourceTree = "<group>"; };
 		59EB758423905F6C00F5AE63 /* IJSVGError.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IJSVGError.h; sourceTree = "<group>"; };
 		59EB758523905F6C00F5AE63 /* IJSVGColor.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGColor.m; sourceTree = "<group>"; };
-		59EB758623905F6C00F5AE63 /* IJSVGDef.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IJSVGDef.h; sourceTree = "<group>"; };
 		59EB758723905F6C00F5AE63 /* IJSVGCommandHorizontalLine.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGCommandHorizontalLine.m; sourceTree = "<group>"; };
-		59EB758823905F6D00F5AE63 /* IJSVGFontConverter.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IJSVGFontConverter.h; sourceTree = "<group>"; };
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 		59EB758C23905F6D00F5AE63 /* IJSVGPatternLayer.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGPatternLayer.m; sourceTree = "<group>"; };
-		59EB758D23905F6D00F5AE63 /* IJSVGRenderingStyle.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGRenderingStyle.m; sourceTree = "<group>"; };
+		59EB758D23905F6D00F5AE63 /* IJSVGStyle.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGStyle.m; sourceTree = "<group>"; };
 		59EB758F23905F6D00F5AE63 /* IJSVGGradientLayer.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGGradientLayer.m; sourceTree = "<group>"; };
 		59EB759023905F6D00F5AE63 /* IJSVGLayerTree.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGLayerTree.m; sourceTree = "<group>"; };
 		59EB759123905F6D00F5AE63 /* IJSVGCommandVerticalLine.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGCommandVerticalLine.m; sourceTree = "<group>"; };
@@ -223,7 +257,7 @@
 		59EB759E23905F6E00F5AE63 /* IJSVGCommandEllipticalArc.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IJSVGCommandEllipticalArc.h; sourceTree = "<group>"; };
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 		59EB75A023905F6E00F5AE63 /* IJSVGCommand.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGCommand.m; sourceTree = "<group>"; };
-		59EB75A123905F6E00F5AE63 /* IJSVGRenderingStyle.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IJSVGRenderingStyle.h; sourceTree = "<group>"; };
+		59EB75A123905F6E00F5AE63 /* IJSVGStyle.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IJSVGStyle.h; sourceTree = "<group>"; };
 		59EB75A223905F6E00F5AE63 /* IJSVG.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVG.m; sourceTree = "<group>"; };
 		59EB75A323905F6E00F5AE63 /* IJSVGImageRep.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IJSVGImageRep.h; sourceTree = "<group>"; };
 		59EB75A423905F6E00F5AE63 /* IJSVGStrokeLayer.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IJSVGStrokeLayer.h; sourceTree = "<group>"; };
@@ -231,10 +265,10 @@
 		59EB75A623905F6F00F5AE63 /* IJSVGRadialGradient.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGRadialGradient.m; sourceTree = "<group>"; };
 		59EB75A723905F6F00F5AE63 /* IJSVGParser.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IJSVGParser.h; sourceTree = "<group>"; };
 		59EB75A823905F6F00F5AE63 /* IJSVGCommandSmoothCurve.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGCommandSmoothCurve.m; sourceTree = "<group>"; };
-		59EB75A923905F6F00F5AE63 /* IJSVGColorList.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IJSVGColorList.h; sourceTree = "<group>"; };
+		59EB75A923905F6F00F5AE63 /* IJSVGTraitedColorStorage.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IJSVGTraitedColorStorage.h; sourceTree = "<group>"; };
 		59EB75AA23905F6F00F5AE63 /* IJSVGPattern.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGPattern.m; sourceTree = "<group>"; };
 		59EB75AB23905F6F00F5AE63 /* IJSVGGradient.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IJSVGGradient.h; sourceTree = "<group>"; };
-		59EB75AC23905F6F00F5AE63 /* IJSVGStyle.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IJSVGStyle.h; sourceTree = "<group>"; };
+		59EB75AC23905F6F00F5AE63 /* IJSVGStyleSheetStyle.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IJSVGStyleSheetStyle.h; sourceTree = "<group>"; };
 		59EB75AD23905F6F00F5AE63 /* IJSVGGroupLayer.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IJSVGGroupLayer.h; sourceTree = "<group>"; };
 		59EB75AE23905F6F00F5AE63 /* IJSVGCommandLineTo.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGCommandLineTo.m; sourceTree = "<group>"; };
 		59EB75AF23905F6F00F5AE63 /* IJSVGCommandMove.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IJSVGCommandMove.h; sourceTree = "<group>"; };
@@ -274,8 +308,10 @@
 		59EB75D323905F7300F5AE63 /* IJSVGRendering.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IJSVGRendering.h; sourceTree = "<group>"; };
 		59EB75D423905F7300F5AE63 /* IJSVGExporter.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IJSVGExporter.h; sourceTree = "<group>"; };
 		59EB75D523905F7300F5AE63 /* IJSVGRendering.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGRendering.m; sourceTree = "<group>"; };
-		59F36506262F1ABB00BCE3FD /* IJSVGColorType.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = IJSVGColorType.h; sourceTree = "<group>"; };
-		59F36507262F1ABB00BCE3FD /* IJSVGColorType.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = IJSVGColorType.m; sourceTree = "<group>"; };
+		59F36506262F1ABB00BCE3FD /* IJSVGTraitedColor.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = IJSVGTraitedColor.h; sourceTree = "<group>"; };
+		59F36507262F1ABB00BCE3FD /* IJSVGTraitedColor.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = IJSVGTraitedColor.m; sourceTree = "<group>"; };
+		59F38A61280ED99200804FE4 /* IJSVGBasicLayer.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = IJSVGBasicLayer.h; sourceTree = "<group>"; };
+		59F38A62280ED99200804FE4 /* IJSVGBasicLayer.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = IJSVGBasicLayer.m; sourceTree = "<group>"; };
 		59F9EAF62808BB5F00188ACB /* IJSVGViewBox.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = IJSVGViewBox.h; sourceTree = "<group>"; };
 		59F9EAF72808BB5F00188ACB /* IJSVGViewBox.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = IJSVGViewBox.m; sourceTree = "<group>"; };
 		59FCC09227F2394D00BB924E /* IJSVGRootNode.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = IJSVGRootNode.h; sourceTree = "<group>"; };
@@ -299,6 +335,15 @@
 /* End PBXFrameworksBuildPhase section */

 /* Begin PBXGroup section */
+		590AA093280DE648002BBE12 /* Filter Effects */ = {
+			isa = PBXGroup;
+			children = (
+				590AA094280DE668002BBE12 /* IJSVGFilterEffectGaussianBlur.h */,
+				590AA095280DE668002BBE12 /* IJSVGFilterEffectGaussianBlur.m */,
+			);
+			path = "Filter Effects";
+			sourceTree = "<group>";
+		};
 		592ABBE223979F9B00F44380 /* Commands */ = {
 			isa = PBXGroup;
 			children = (
@@ -331,8 +376,8 @@
 		592ABBE323979FBB00F44380 /* Stylesheets */ = {
 			isa = PBXGroup;
 			children = (
-				59EB75AC23905F6F00F5AE63 /* IJSVGStyle.h */,
-				59EB757523905F6C00F5AE63 /* IJSVGStyle.m */,
+				59EB75AC23905F6F00F5AE63 /* IJSVGStyleSheetStyle.h */,
+				59EB757523905F6C00F5AE63 /* IJSVGStyleSheetStyle.m */,
 				59EB756F23905F6C00F5AE63 /* IJSVGStyleSheet.h */,
 				59EB75D123905F7300F5AE63 /* IJSVGStyleSheet.m */,
 				59EB759B23905F6E00F5AE63 /* IJSVGStyleSheetRule.h */,
@@ -350,10 +395,10 @@
 			children = (
 				59EB758323905F6C00F5AE63 /* IJSVGColor.h */,
 				59EB758523905F6C00F5AE63 /* IJSVGColor.m */,
-				59EB75A923905F6F00F5AE63 /* IJSVGColorList.h */,
-				59EB757123905F6C00F5AE63 /* IJSVGColorList.m */,
-				59F36506262F1ABB00BCE3FD /* IJSVGColorType.h */,
-				59F36507262F1ABB00BCE3FD /* IJSVGColorType.m */,
+				59EB75A923905F6F00F5AE63 /* IJSVGTraitedColorStorage.h */,
+				59EB757123905F6C00F5AE63 /* IJSVGTraitedColorStorage.m */,
+				59F36506262F1ABB00BCE3FD /* IJSVGTraitedColor.h */,
+				59F36507262F1ABB00BCE3FD /* IJSVGTraitedColor.m */,
 			);
 			path = Colors;
 			sourceTree = "<group>";
@@ -379,6 +424,12 @@
 				590EB7A327F637EF0047CECF /* IJSVGTransformLayer.m */,
 				5978C468280A241200D25296 /* IJSVGRootLayer.h */,
 				5978C469280A241200D25296 /* IJSVGRootLayer.m */,
+				595BA91A280EB29B00AD1C89 /* IJSVGFilterLayer.h */,
+				595BA91B280EB29B00AD1C89 /* IJSVGFilterLayer.m */,
+				59F38A61280ED99200804FE4 /* IJSVGBasicLayer.h */,
+				59F38A62280ED99200804FE4 /* IJSVGBasicLayer.m */,
+				5955731D286C643900156047 /* IJSVGTileLayer.h */,
+				5955731E286C643900156047 /* IJSVGTileLayer.m */,
 			);
 			path = Layers;
 			sourceTree = "<group>";
@@ -397,10 +448,9 @@
 		592ABBE72397A02900F44380 /* Nodes */ = {
 			isa = PBXGroup;
 			children = (
+				590AA093280DE648002BBE12 /* Filter Effects */,
 				59EB75CE23905F7200F5AE63 /* IJSVGForeignObject.h */,
 				59EB75C923905F7200F5AE63 /* IJSVGForeignObject.m */,
-				59EB758623905F6C00F5AE63 /* IJSVGDef.h */,
-				59EB756923905F6B00F5AE63 /* IJSVGDef.m */,
 				59EB759F23905F6E00F5AE63 /* IJSVGLinearGradient.h */,
 				59EB75C223905F7100F5AE63 /* IJSVGLinearGradient.m */,
 				59EB757223905F6C00F5AE63 /* IJSVGRadialGradient.h */,
@@ -423,6 +473,14 @@
 				59FCC09327F2394D00BB924E /* IJSVGRootNode.m */,
 				59FDBEFE27F3454800AF7038 /* IJSVGColorNode.h */,
 				59FDBEFF27F3454800AF7038 /* IJSVGColorNode.m */,
+				590AA08B280DDD90002BBE12 /* IJSVGFilter.h */,
+				590AA08C280DDD90002BBE12 /* IJSVGFilter.m */,
+				590AA08F280DDDA3002BBE12 /* IJSVGFilterEffect.h */,
+				590AA090280DDDA3002BBE12 /* IJSVGFilterEffect.m */,
+				5910A9A428427AD600BD1F03 /* IJSVGMask.h */,
+				5910A9A528427AD600BD1F03 /* IJSVGMask.m */,
+				5910A9A8284377D600BD1F03 /* IJSVGClipPath.h */,
+				5910A9A9284377D600BD1F03 /* IJSVGClipPath.m */,
 			);
 			path = Nodes;
 			sourceTree = "<group>";
@@ -452,6 +510,12 @@
 				591A3E4C25CC91F800AD45B7 /* IJSVGParsing.m */,
 				59F9EAF62808BB5F00188ACB /* IJSVGViewBox.h */,
 				59F9EAF72808BB5F00188ACB /* IJSVGViewBox.m */,
+				59AC86582810156B00CD5685 /* IJSVGThreadManager.h */,
+				59AC86592810156B00CD5685 /* IJSVGThreadManager.m */,
+				5926079D287D6C1000E93B09 /* IJSVGFeatureFlags.h */,
+				5926079E287D6C1000E93B09 /* IJSVGFeatureFlags.m */,
+				59E6690B287D6C810085EDF5 /* IJSVGFeatureFlag.h */,
+				59E6690C287D6C810085EDF5 /* IJSVGFeatureFlag.m */,
 			);
 			path = Utils;
 			sourceTree = "<group>";
@@ -474,8 +538,8 @@
 				59EB759023905F6D00F5AE63 /* IJSVGLayerTree.m */,
 				59EB75D323905F7300F5AE63 /* IJSVGRendering.h */,
 				59EB75D523905F7300F5AE63 /* IJSVGRendering.m */,
-				59EB75A123905F6E00F5AE63 /* IJSVGRenderingStyle.h */,
-				59EB758D23905F6D00F5AE63 /* IJSVGRenderingStyle.m */,
+				59EB75A123905F6E00F5AE63 /* IJSVGStyle.h */,
+				59EB758D23905F6D00F5AE63 /* IJSVGStyle.m */,
 			);
 			path = Rendering;
 			sourceTree = "<group>";
@@ -534,8 +598,6 @@
 				59EB756A23905F6B00F5AE63 /* IJSVG.h */,
 				59EB75A223905F6E00F5AE63 /* IJSVG.m */,
 				59EB758423905F6C00F5AE63 /* IJSVGError.h */,
-				59EB758823905F6D00F5AE63 /* IJSVGFontConverter.h */,
-				59EB757C23905F6C00F5AE63 /* IJSVGFontConverter.m */,
 				59EB75A323905F6E00F5AE63 /* IJSVGImageRep.h */,
 				59EB757D23905F6C00F5AE63 /* IJSVGImageRep.m */,
 				59EB75CD23905F7200F5AE63 /* IJSVGView.h */,
@@ -578,14 +640,13 @@
 				59EB764423905F7300F5AE63 /* IJSVGRendering.h in Headers */,
 				59EB75DC23905F7300F5AE63 /* IJSVGText.h in Headers */,
 				59EB761C23905F7300F5AE63 /* IJSVGGradient.h in Headers */,
-				59EB75F923905F7300F5AE63 /* IJSVGFontConverter.h in Headers */,
 				59EB75EF23905F7300F5AE63 /* IJSVGCommandQuadraticCurve.h in Headers */,
 				59EB75FC23905F7300F5AE63 /* IJSVGGroup.h in Headers */,
 				59EB760323905F7300F5AE63 /* IJSVGNode.h in Headers */,
 				59EB762023905F7300F5AE63 /* IJSVGCommandMove.h in Headers */,
 				59EB762C23905F7300F5AE63 /* IJSVGPattern.h in Headers */,
 				59EB762923905F7300F5AE63 /* IJSVGStringAdditions.h in Headers */,
-				59EB761A23905F7300F5AE63 /* IJSVGColorList.h in Headers */,
+				59EB761A23905F7300F5AE63 /* IJSVGTraitedColorStorage.h in Headers */,
 				59EB762123905F7300F5AE63 /* IJSVGTransform.h in Headers */,
 				59EB763F23905F7300F5AE63 /* IJSVGForeignObject.h in Headers */,
 				59EB75F423905F7300F5AE63 /* IJSVGColor.h in Headers */,
@@ -602,11 +663,10 @@
 				59EB764123905F7300F5AE63 /* IJSVGImageLayer.h in Headers */,
 				59EB75E023905F7300F5AE63 /* IJSVGStyleSheet.h in Headers */,
 				59EB761423905F7300F5AE63 /* IJSVGImageRep.h in Headers */,
-				59EB761223905F7300F5AE63 /* IJSVGRenderingStyle.h in Headers */,
+				59EB761223905F7300F5AE63 /* IJSVGStyle.h in Headers */,
 				59EB760E23905F7300F5AE63 /* IJSVGPath.h in Headers */,
 				59EB75EA23905F7300F5AE63 /* IJSVGTransaction.h in Headers */,
 				59EB75D723905F7300F5AE63 /* IJSVGGradientLayer.h in Headers */,
-				59EB75F723905F7300F5AE63 /* IJSVGDef.h in Headers */,
 				59EB760623905F7300F5AE63 /* IJSVGCommandHorizontalLine.h in Headers */,
 				59EB762323905F7300F5AE63 /* IJSVGExporterPathInstruction.h in Headers */,
 				59EB761023905F7300F5AE63 /* IJSVGLinearGradient.h in Headers */,
@@ -617,13 +677,13 @@
 				59EB75F023905F7300F5AE63 /* IJSVGStyleSheetSelectorRaw.h in Headers */,
 				59EB761823905F7300F5AE63 /* IJSVGParser.h in Headers */,
 				59EB761E23905F7300F5AE63 /* IJSVGGroupLayer.h in Headers */,
-				59EB761D23905F7300F5AE63 /* IJSVGStyle.h in Headers */,
+				59EB761D23905F7300F5AE63 /* IJSVGStyleSheetStyle.h in Headers */,
 				5919E65723F47FF60051873A /* IJSVGUnitRect.h in Headers */,
 				5919E65B23F480330051873A /* IJSVGUnitPoint.h in Headers */,
 				591A3E4D25CC91F800AD45B7 /* IJSVGParsing.h in Headers */,
 				59A24EBC23F480EA0090C374 /* IJSVGUnitSize.h in Headers */,
 				59EB764523905F7300F5AE63 /* IJSVGExporter.h in Headers */,
-				59F36508262F1ABB00BCE3FD /* IJSVGColorType.h in Headers */,
+				59F36508262F1ABB00BCE3FD /* IJSVGTraitedColor.h in Headers */,
 				59E7CFAF23B148600077D599 /* IJSVGCommandParser.h in Headers */,
 				59EB762823905F7300F5AE63 /* IJSVGCommandClose.h in Headers */,
 				59EB75E423905F7300F5AE63 /* IJSVGGradientUnitLength.h in Headers */,
@@ -631,9 +691,20 @@
 				594A10DA248D7C90001A3181 /* NSImage+IJSVGAdditions.h in Headers */,
 				59EB762D23905F7300F5AE63 /* IJSVGLayerTree.h in Headers */,
 				59FDBF0027F3454800AF7038 /* IJSVGColorNode.h in Headers */,
+				590AA091280DDDA3002BBE12 /* IJSVGFilterEffect.h in Headers */,
+				590AA08D280DDD90002BBE12 /* IJSVGFilter.h in Headers */,
+				59F38A63280ED99200804FE4 /* IJSVGBasicLayer.h in Headers */,
+				595BA91C280EB29B00AD1C89 /* IJSVGFilterLayer.h in Headers */,
+				590AA096280DE668002BBE12 /* IJSVGFilterEffectGaussianBlur.h in Headers */,
 				590EB7A427F637EF0047CECF /* IJSVGTransformLayer.h in Headers */,
+				59AC865A2810156B00CD5685 /* IJSVGThreadManager.h in Headers */,
 				5978C46A280A241200D25296 /* IJSVGRootLayer.h in Headers */,
 				59F9EAF82808BB5F00188ACB /* IJSVGViewBox.h in Headers */,
+				5910A9AA284377D600BD1F03 /* IJSVGClipPath.h in Headers */,
+				5926079F287D6C1000E93B09 /* IJSVGFeatureFlags.h in Headers */,
+				59E6690D287D6C810085EDF5 /* IJSVGFeatureFlag.h in Headers */,
+				5910A9A628427AD600BD1F03 /* IJSVGMask.h in Headers */,
+				5955731F286C643900156047 /* IJSVGTileLayer.h in Headers */,
 				59EB760B23905F7300F5AE63 /* IJSVGStyleSheetSelector.h in Headers */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -706,16 +777,21 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				592607A0287D6C1000E93B09 /* IJSVGFeatureFlags.m in Sources */,
 				59EB763123905F7300F5AE63 /* IJSVGText.m in Sources */,
 				59A24EBD23F480EA0090C374 /* IJSVGUnitSize.m in Sources */,
 				59EB760223905F7300F5AE63 /* IJSVGCommandVerticalLine.m in Sources */,
 				59EB75FD23905F7300F5AE63 /* IJSVGPatternLayer.m in Sources */,
 				59EB763923905F7300F5AE63 /* IJSVGCommandSmoothQuadraticCurve.m in Sources */,
 				59EB75D823905F7300F5AE63 /* IJSVGStyleSheetRule.m in Sources */,
+				590AA092280DDDA3002BBE12 /* IJSVGFilterEffect.m in Sources */,
+				59AC865B2810156B00CD5685 /* IJSVGThreadManager.m in Sources */,
 				59EB75FB23905F7300F5AE63 /* IJSVGPath.m in Sources */,
-				59F36509262F1ABB00BCE3FD /* IJSVGColorType.m in Sources */,
+				590AA097280DE668002BBE12 /* IJSVGFilterEffectGaussianBlur.m in Sources */,
+				59F36509262F1ABB00BCE3FD /* IJSVGTraitedColor.m in Sources */,
 				59EB760123905F7300F5AE63 /* IJSVGLayerTree.m in Sources */,
 				59EB763A23905F7300F5AE63 /* IJSVGForeignObject.m in Sources */,
+				59E6690E287D6C810085EDF5 /* IJSVGFeatureFlag.m in Sources */,
 				59EB761123905F7300F5AE63 /* IJSVGCommand.m in Sources */,
 				59EB760923905F7300F5AE63 /* IJSVGCommandCurve.m in Sources */,
 				59EB763323905F7300F5AE63 /* IJSVGLinearGradient.m in Sources */,
@@ -727,21 +803,26 @@
 				59EB75E523905F7300F5AE63 /* IJSVGStrokeLayer.m in Sources */,
 				59EB763223905F7300F5AE63 /* IJSVGView.m in Sources */,
 				59EB763523905F7300F5AE63 /* IJSVGStyleSheetSelector.m in Sources */,
+				590AA08E280DDD90002BBE12 /* IJSVGFilter.m in Sources */,
 				59E7CFB023B148600077D599 /* IJSVGCommandParser.m in Sources */,
+				5910A9AB284377D600BD1F03 /* IJSVGClipPath.m in Sources */,
 				59EB760723905F7300F5AE63 /* IJSVGNode.m in Sources */,
 				5919E65C23F480330051873A /* IJSVGUnitPoint.m in Sources */,
 				59EB75E923905F7300F5AE63 /* IJSVGStringAdditions.m in Sources */,
 				59FDBF0127F3454800AF7038 /* IJSVGColorNode.m in Sources */,
+				59557320286C643900156047 /* IJSVGTileLayer.m in Sources */,
 				59EB761723905F7300F5AE63 /* IJSVGRadialGradient.m in Sources */,
-				59EB75E223905F7300F5AE63 /* IJSVGColorList.m in Sources */,
-				59EB75ED23905F7300F5AE63 /* IJSVGFontConverter.m in Sources */,
+				59EB75E223905F7300F5AE63 /* IJSVGTraitedColorStorage.m in Sources */,
+				595BA91D280EB29B00AD1C89 /* IJSVGFilterLayer.m in Sources */,
 				59EB763C23905F7300F5AE63 /* IJSVGCommandEllipticalArc.m in Sources */,
 				59EB75E723905F7300F5AE63 /* IJSVGImage.m in Sources */,
-				59EB75E623905F7300F5AE63 /* IJSVGStyle.m in Sources */,
+				59EB75E623905F7300F5AE63 /* IJSVGStyleSheetStyle.m in Sources */,
+				59F38A64280ED99200804FE4 /* IJSVGBasicLayer.m in Sources */,
 				59EB75EB23905F7300F5AE63 /* IJSVGShapeLayer.m in Sources */,
 				59EB75F623905F7300F5AE63 /* IJSVGColor.m in Sources */,
 				59EB75F323905F7300F5AE63 /* IJSVGGroupLayer.m in Sources */,
 				591A3E4E25CC91F800AD45B7 /* IJSVGParsing.m in Sources */,
+				5910A9A728427AD600BD1F03 /* IJSVGMask.m in Sources */,
 				5919E65823F47FF60051873A /* IJSVGUnitRect.m in Sources */,
 				5978C46B280A241200D25296 /* IJSVGRootLayer.m in Sources */,
 				59EB762523905F7300F5AE63 /* IJSVGTransform.m in Sources */,
@@ -753,14 +834,13 @@
 				59EB761623905F7300F5AE63 /* IJSVGParser.m in Sources */,
 				59EB75DD23905F7300F5AE63 /* IJSVGCommandQuadraticCurve.m in Sources */,
 				59EB762423905F7300F5AE63 /* IJSVGTransaction.m in Sources */,
-				59EB75DA23905F7300F5AE63 /* IJSVGDef.m in Sources */,
 				59EB763723905F7300F5AE63 /* IJSVGCommandClose.m in Sources */,
 				59F9EAF92808BB5F00188ACB /* IJSVGViewBox.m in Sources */,
 				59EB764323905F7300F5AE63 /* IJSVGGradient.m in Sources */,
 				59EB762A23905F7300F5AE63 /* IJSVGGradientUnitLength.m in Sources */,
 				59EB764223905F7300F5AE63 /* IJSVGStyleSheet.m in Sources */,
 				59EB764023905F7300F5AE63 /* IJSVGExporterPathInstruction.m in Sources */,
-				59EB75FE23905F7300F5AE63 /* IJSVGRenderingStyle.m in Sources */,
+				59EB75FE23905F7300F5AE63 /* IJSVGStyle.m in Sources */,
 				59EB75F223905F7300F5AE63 /* IJSVGStyleSheetSelectorRaw.m in Sources */,
 				590EB7A527F637EF0047CECF /* IJSVGTransformLayer.m in Sources */,
 				59EB75EE23905F7300F5AE63 /* IJSVGImageRep.m in Sources */,
@@ -899,7 +979,7 @@
 		594CF478238FF38E009B251B /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				CLANG_ENABLE_OBJC_ARC = NO;
+				CLANG_ENABLE_OBJC_ARC = YES;
 				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CODE_SIGN_STYLE = Automatic;
@@ -927,7 +1007,7 @@
 		594CF479238FF38E009B251B /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				CLANG_ENABLE_OBJC_ARC = NO;
+				CLANG_ENABLE_OBJC_ARC = YES;
 				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CODE_SIGN_STYLE = Automatic;
@@ -6,8 +6,8 @@
 //  Copyright © 2019 Curtis Hard. All rights reserved.
 //

-#import "IJSVGStringAdditions.h"
-#import "IJSVGUtils.h"
+#import <IJSVG/IJSVGStringAdditions.h>
+#import <IJSVG/IJSVGUtils.h>

@implementation NSString (IJSVGAdditions)

@@ -18,7 +18,7 @@
        return @[];
    }
    NSMutableArray<NSString*>* strings = nil;
-    strings = [[[NSMutableArray alloc] init] autorelease];
+    strings = [[NSMutableArray alloc] init];
    char* copy = strdup(chars);
    char* spt = NULL;
    char* ptr = strtok_r(copy, aChar, &spt);
@@ -38,7 +38,7 @@
    const char* buffer = self.UTF8String;
    char currentChar;
    while((currentChar = *buffer++) ) {
-        if (isalpha(currentChar)) {
+        if(isalpha(currentChar)) {
            return YES;
        }
    }
@@ -50,7 +50,7 @@
    const char* buffer = self.UTF8String;
    char currentChar;
    while((currentChar = *buffer++) ) {
-        if (!isnumber(currentChar)) {
+        if(!isnumber(currentChar)) {
            return NO;
        }
    }
@@ -6,13 +6,13 @@
 //  Copyright © 2020 Curtis Hard. All rights reserved.
 //

-#import "IJSVGImageRep.h"
-#import "NSImage+IJSVGAdditions.h"
+#import <IJSVG/IJSVGImageRep.h>
+#import <IJSVG/NSImage+IJSVGAdditions.h>

 IJSVG* IJSVGGetFromNSImage(NSImage* image)
 {
    for (NSImageRep* rep in image.representations) {
-        if ([rep isKindOfClass:IJSVGImageRep.class]) {
+        if([rep isKindOfClass:IJSVGImageRep.class]) {
            return ((IJSVGImageRep*)rep).SVG;
        }
    }
@@ -27,23 +27,23 @@ IJSVG* IJSVGGetFromNSImage(NSImage* image)
    NSBundle* bundle = NSBundle.mainBundle;
    NSString* str = nil;
    NSString* ext = imageName.pathExtension;
-    if (ext == nil || ext.length == 0) {
+    if(ext == nil || ext.length == 0) {
        ext = @"svg";
    }

-    if ((str = [bundle pathForResource:imageName.stringByDeletingPathExtension
+    if((str = [bundle pathForResource:imageName.stringByDeletingPathExtension
                                ofType:ext])
        != nil) {

        // work out if we can get the data
-        NSData* data = [[[NSData alloc] initWithContentsOfFile:str] autorelease];
-        if (data == nil) {
+        NSData* data = [[NSData alloc] initWithContentsOfFile:str];
+        if(data == nil) {
            return nil;
        }

        // grab the image rep
-        IJSVGImageRep* rep = [[[IJSVGImageRep alloc] initWithData:data] autorelease];
-        NSImage* image = [[[NSImage alloc] init] autorelease];
+        IJSVGImageRep* rep = [[IJSVGImageRep alloc] initWithData:data];
+        NSImage* image = [[NSImage alloc] init];
        [image addRepresentation:rep];
        return image;
    }
@@ -6,10 +6,11 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGColor.h"
-#import "IJSVGUtils.h"
-#import "IJSVGStringAdditions.h"
-#import "IJSVGParsing.h"
+#import <IJSVG/IJSVGColor.h>
+#import <IJSVG/IJSVGUtils.h>
+#import <IJSVG/IJSVGStringAdditions.h>
+#import <IJSVG/IJSVGParsing.h>
+#import <IJSVG/IJSVGParser.h>

 NSString* const IJSVGColorCurrentColorName = @"currentColor";

@@ -28,7 +29,7 @@ CGFloat* IJSVGColorCSSHSLToHSB(CGFloat hue, CGFloat saturation, CGFloat lightnes

    CGFloat s = saturation * ((lightness < 1.f) ? lightness : (2.f - lightness));
    CGFloat brightness = (lightness + s) * .5f;
-    if (s != 0.f) {
+    if(s != 0.f) {
        s = (2.f * s) / (lightness + s);
    }
    CGFloat* floats = (CGFloat*)malloc(3 * sizeof(CGFloat));
@@ -51,7 +52,7 @@ CGFloat* IJSVGColorCSSHSLToHSB(CGFloat hue, CGFloat saturation, CGFloat lightnes
 + (NSColor*)computeColorSpace:(NSColor*)color
 {
    NSColorSpace* space = [self defaultColorSpace];
-    if (color.colorSpace != space) {
+    if(color.colorSpace != space) {
        color = [color colorUsingColorSpace:space];
    }
    return color;
@@ -61,7 +62,7 @@ CGFloat* IJSVGColorCSSHSLToHSB(CGFloat hue, CGFloat saturation, CGFloat lightnes
 {
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
-        _colorTree = [@{
+        _colorTree = @{
            @"aliceblue" : @(0xf0f8ff),
            @"antiquewhite" : @(0xfaebd7),
            @"aqua" : @(0x00ffff),
@@ -207,13 +208,13 @@ CGFloat* IJSVGColorCSSHSLToHSB(CGFloat hue, CGFloat saturation, CGFloat lightnes
            @"whitesmoke" : @(0xf5f5f5),
            @"yellow" : @(0xffff00),
            @"yellowgreen" : @(0x9acd32)
-        } retain];
+        };
    });
 }

 + (NSColor*)computeColor:(id)colour
 {
-    if ([colour isKindOfClass:[NSColor class]])
+    if([colour isKindOfClass:[NSColor class]])
        return colour;
    return nil;
 }
@@ -263,13 +264,14 @@ CGFloat* IJSVGColorCSSHSLToHSB(CGFloat hue, CGFloat saturation, CGFloat lightnes
    }
    
    char* str = IJSVGTimmedCharBufferCreate(oString);
-    if (IJSVGCharBufferIsHEX(str) == YES) {
+    if(IJSVGCharBufferIsHEX(str) == YES) {
+        string = [NSString stringWithUTF8String:str];
        (void)free(str), str = NULL;
        return [self.class colorFromHEXString:string];
    }

    // is it RGB?
-    if (IJSVGCharBufferHasPrefix(str, "rgb") == YES) {
+    if(IJSVGCharBufferHasPrefix(str, "rgb") == YES) {
        NSUInteger count = 0;
        IJSVGParsingStringMethod** methods = NULL;
        methods = IJSVGParsingMethodParseString(str, &count);
@@ -291,7 +293,7 @@ CGFloat* IJSVGColorCSSHSLToHSB(CGFloat hue, CGFloat saturation, CGFloat lightnes
        NSString* parameters = [NSString stringWithUTF8String:method->parameters];
        NSArray* parts = [parameters ijsvg_componentsSeparatedByChars:","];
        NSString* alpha = @"100%";
-        if (parts.count == 4) {
+        if(parts.count == 4) {
            alpha = parts[3];
        }
        
@@ -304,12 +306,12 @@ CGFloat* IJSVGColorCSSHSLToHSB(CGFloat hue, CGFloat saturation, CGFloat lightnes
    }

    // is it HSL?
-    if (IJSVGCharBufferHasPrefix(str, "hsl")) {
+    if(IJSVGCharBufferHasPrefix(str, "hsl")) {
        NSInteger count = 0;
        CGFloat* params = [IJSVGUtils scanFloatsFromCString:str
                                                       size:&count];
        CGFloat alpha = 1;
-        if (count == 4) {
+        if(count == 4) {
            alpha = params[3];
        }

@@ -330,7 +332,7 @@ CGFloat* IJSVGColorCSSHSLToHSB(CGFloat hue, CGFloat saturation, CGFloat lightnes
    }
    
    // is simply a clear color, dont fill
-    if (strcmp(str, "none") == 0 ||
+    if(strcmp(str, "none") == 0 ||
        strcmp(str, "transparent") == 0) {
        (void)free(str), str = NULL;
        return nil;
@@ -345,7 +347,7 @@ CGFloat* IJSVGColorCSSHSLToHSB(CGFloat hue, CGFloat saturation, CGFloat lightnes
 {
    NSNumber* hex = nil;
    name = [name.lowercaseString stringByTrimmingCharactersInSet:NSCharacterSet.whitespaceAndNewlineCharacterSet];
-    if ((hex = _colorTree[name]) == nil) {
+    if((hex = _colorTree[name]) == nil) {
        return nil;
    }
    return [self.class colorFromHEXInteger:hex.integerValue];
@@ -374,33 +376,33 @@ CGFloat* IJSVGColorCSSHSLToHSB(CGFloat hue, CGFloat saturation, CGFloat lightnes
    BOOL allowRRGGBBAA = (options & IJSVGColorStringOptionAllowRRGGBBAA) != 0;

    // jsut return none
-    if (alpha == 0 && forceHex == NO) {
-        return @"none";
+    if(alpha == 0 && forceHex == NO) {
+        return IJSVGStringNone;
    }

    // always return hex unless criteria is met
-    if (forceHex == YES || allowRRGGBBAA == YES || alpha == 100 || (red == 0 && green == 0 && blue == 0 && alpha == 0) || (red == 255 && green == 255 && blue == 255 && alpha == 100)) {
+    if(forceHex == YES || allowRRGGBBAA == YES || alpha == 100 || (red == 0 && green == 0 && blue == 0 && alpha == 0) || (red == 255 && green == 255 && blue == 255 && alpha == 100)) {

        // we need to make sure the last 2 chars
        // are the same or we cant enable shorthand
-        if (allowRRGGBBAA == YES) {
+        if(allowRRGGBBAA == YES) {
            NSString* alphaHexString = [NSString stringWithFormat:@"%02X",
                                                 (int)(color.alphaComponent * 0xFF)];
-            if ([alphaHexString characterAtIndex:0] !=
+            if([alphaHexString characterAtIndex:0] !=
                [alphaHexString characterAtIndex:1]) {
                allowShortHand = NO;
            }
        }

-        if (allowShortHand == YES) {
+        if(allowShortHand == YES) {
            NSString* r = [NSString stringWithFormat:@"%02X", red];
            NSString* g = [NSString stringWithFormat:@"%02X", green];
            NSString* b = [NSString stringWithFormat:@"%02X", blue];
-            if ([r characterAtIndex:0] == [r characterAtIndex:1] &&
+            if([r characterAtIndex:0] == [r characterAtIndex:1] &&
                [g characterAtIndex:0] == [g characterAtIndex:1] &&
                [b characterAtIndex:0] == [b characterAtIndex:1]) {
                // allow shorthand alpha
-                if (allowRRGGBBAA == YES && alpha != 100) {
+                if(allowRRGGBBAA == YES && alpha != 100) {
                    NSString* a = [NSString stringWithFormat:@"%02X",
                                            (int)(color.alphaComponent * 0xFF)];
                    return [NSString stringWithFormat:@"#%c%c%c%c",
@@ -411,7 +413,7 @@ CGFloat* IJSVGColorCSSHSLToHSB(CGFloat hue, CGFloat saturation, CGFloat lightnes
                                 [g characterAtIndex:0], [b characterAtIndex:0]];
            }
        }
-        if (allowRRGGBBAA == YES && alpha != 100) {
+        if(allowRRGGBBAA == YES && alpha != 100) {
            return [NSString stringWithFormat:@"#%02X%02X%02X%02X", red, green,
                             blue, (int)(color.alphaComponent * 0xFF)];
        }
@@ -761,7 +763,7 @@ CGFloat* IJSVGColorCSSHSLToHSB(CGFloat hue, CGFloat saturation, CGFloat lightnes
 + (NSColor*)colorFromHEXInteger:(NSInteger)hex
 {
    CGFloat alpha = 1.f;
-    if ([self HEXContainsAlphaComponent:hex] == YES) {
+    if([self HEXContainsAlphaComponent:hex] == YES) {
        alpha = (hex & 0xFF) / 255.f;
        hex = hex >> 8;
    }
@@ -793,7 +795,7 @@ CGFloat* IJSVGColorCSSHSLToHSB(CGFloat hue, CGFloat saturation, CGFloat lightnes
    
    char* str = (char*)string.UTF8String;
    size_t length = strlen(str);
-    if (length == 0 || IJSVGCharBufferIsHEX(str) == NO) {
+    if(length == 0 || IJSVGCharBufferIsHEX(str) == NO) {
        return nil;
    }

@@ -806,7 +808,7 @@ CGFloat* IJSVGColorCSSHSLToHSB(CGFloat hue, CGFloat saturation, CGFloat lightnes
    unsigned long hex;
    // we need to work out if its shorthand
    // if it is, the length needs to be length*2
-    if (length == 3 || length == 4) {
+    if(length == 3 || length == 4) {
        char* chars = NULL;
        chars = (char*)calloc(sizeof(char),length*2+1);
        for(int i = 0; i < length; i++) {
@@ -819,7 +821,7 @@ CGFloat* IJSVGColorCSSHSLToHSB(CGFloat hue, CGFloat saturation, CGFloat lightnes
    }
    
    // now convert rest to hex
-    if (containsAlphaComponent != nil) {
+    if(containsAlphaComponent != nil) {
        *containsAlphaComponent = [self HEXContainsAlphaComponent:hex];
    }
    return [self colorFromHEXInteger:hex];
@@ -1,35 +0,0 @@
-//
-//  IJSVGColorList.h
-//  IconJar
-//
-//  Created by Curtis Hard on 07/07/2019.
-//  Copyright © 2019 Curtis Hard. All rights reserved.
-//
-
-#import <IJSVG/IJSVGColor.h>
-#import <IJSVG/IJSVGColorType.h>
-#import <Foundation/Foundation.h>
-
-@interface IJSVGColorList : NSObject <NSCopying> {
-
-@private
-    NSMutableDictionary<NSColor*, NSColor*>* _replacementColorTree;
-    NSMutableSet<IJSVGColorType*>* _colors;
-}
-
-@property (nonatomic, assign, readonly) NSUInteger count;
-
- (NSColor*)proposedColorForColor:(NSColor*)color;
- (void)removeAllReplacementColors;
- (void)removeReplacementColor:(NSColor*)color;
- (void)setReplacementColor:(NSColor*)newColor
-                   forColor:(NSColor*)color;
- (void)setReplacementColors:(NSDictionary<NSColor*, NSColor*>*)colors
-         clearExistingColors:(BOOL)clearExistingColors;
-
- (void)addColorsFromList:(IJSVGColorList*)sheet;
- (NSSet<IJSVGColorType*>*)colors;
- (void)addColor:(IJSVGColorType*)color;
- (NSDictionary<NSColor*, NSColor*>*)replacementColors;
-
-@end
@@ -1,136 +0,0 @@
-//
-//  IJSVGColorList.m
-//  IconJar
-//
-//  Created by Curtis Hard on 07/07/2019.
-//  Copyright © 2019 Curtis Hard. All rights reserved.
-//
-
-#import "IJSVGColorList.h"
-
-@implementation IJSVGColorList
-
- (void)dealloc
-{
-    (void)([_replacementColorTree release]), _replacementColorTree = nil;
-    (void)([_colors release]), _colors = nil;
-    [super dealloc];
-}
-
- (instancetype)init
-{
-    if ((self = [super init]) != nil) {
-        _replacementColorTree = [[NSMutableDictionary alloc] init];
-        _colors = [[NSMutableSet alloc] init];
-    }
-    return self;
-}
-
- (id)copyWithZone:(NSZone*)zone
-{
-    IJSVGColorList* sheet = [[self.class alloc] init];
-    [sheet setReplacementColors:[_replacementColorTree.copy autorelease]
-            clearExistingColors:YES];
-    return sheet;
-}
-
- (NSColor*)proposedColorForColor:(NSColor*)color
-{
-    // nothing found, just return color
-    if (_replacementColorTree == nil || _replacementColorTree.count == 0) {
-        return color;
-    }
-
-    // check the mappings
-    NSColor* found = nil;
-    color = [IJSVGColor computeColorSpace:color];
-    if ((found = _replacementColorTree[color]) != nil) {
-        return found;
-    }
-    return color;
-}
-
- (void)_invalidateColorTree
-{
-    (void)([_replacementColorTree release]), _replacementColorTree = nil;
-    _replacementColorTree = [[NSMutableDictionary alloc] init];
-}
-
- (void)removeAllReplacementColors
-{
-    [self _invalidateColorTree];
-}
-
- (void)removeReplacementColor:(NSColor*)color
-{
-    if (_replacementColorTree == nil) {
-        return;
-    }
-    [_replacementColorTree removeObjectForKey:[IJSVGColor computeColorSpace:color]];
-}
-
- (void)setReplacementColor:(NSColor*)newColor
-                   forColor:(NSColor*)color
-{
-    color = [IJSVGColor computeColorSpace:color];
-    newColor = [IJSVGColor computeColorSpace:newColor];
-    _replacementColorTree[color] = newColor;
-}
-
- (void)setReplacementColors:(NSDictionary<NSColor*, NSColor*>*)colors
-         clearExistingColors:(BOOL)clearExistingColors
-{
-    if (clearExistingColors == YES) {
-        [self _invalidateColorTree];
-    }
-    for (NSColor* oldColor in colors) {
-        [self setReplacementColor:colors[oldColor]
-                         forColor:oldColor];
-    }
-}
-
- (NSSet<IJSVGColorType*>*)colors
-{
-    return [NSSet setWithSet:_colors];
-}
-
- (void)addColorsFromList:(IJSVGColorList*)sheet
-{
-    for(IJSVGColorType* color in sheet.colors) {
-        [self addColor:color];
-    }
-}
-
- (void)addColor:(IJSVGColorType*)color
-{
-    // we just need to update its bit mask
-    if([_colors containsObject:color] == YES) {
-        void (^handler)(IJSVGColorType * _Nonnull obj, BOOL * _Nonnull stop) =
-        ^(IJSVGColorType * _Nonnull obj, BOOL * _Nonnull stop) {
-            if([obj isEqual:color] == YES) {
-                obj.flags |= color.flags;
-                *stop = YES;
-            }
-        };
-        [_colors enumerateObjectsUsingBlock:handler];
-        return;
-    }
-    [_colors addObject:color];
-}
-
- (NSDictionary<NSColor*,NSColor*>*)replacementColors
-{
-    return _replacementColorTree;
-}
-
- (void)removeColor:(IJSVGColorType*)color
-{
-    [_colors removeObject:color];
-}
-
- (NSUInteger)count
-{
-    return _colors.count;
-}
-
-@end
@@ -9,22 +9,24 @@
 #import <Foundation/Foundation.h>
 #import <AppKit/AppKit.h>

-typedef NS_OPTIONS(NSInteger, IJSVGColorTypeFlags) {
-    IJSVGColorTypeNone = 0,
-    IJSVGColorTypeFlagUnknown = 1 << 0,
-    IJSVGColorTypeFlagFill = 1 << 1,
-    IJSVGColorTypeFlagStroke = 1 << 2,
-    IJSVGColorTypeFlagStop = 1 << 3
+typedef NS_OPTIONS(NSInteger, IJSVGColorUsageTraits) {
+    IJSVGColorUsageTraitNone = 0,
+    IJSVGColorUsageTraitUnknown = 1 << 0,
+    IJSVGColorUsageTraitFill = 1 << 1,
+    IJSVGColorUsageTraitStroke = 1 << 2,
+    IJSVGColorUsageTraitGradientStop = 1 << 3,
+    IJSVGColorUsageTraitAll = IJSVGColorUsageTraitFill | IJSVGColorUsageTraitGradientStop |
+        IJSVGColorUsageTraitStroke
 };

-@interface IJSVGColorType : NSObject {
+@interface IJSVGTraitedColor : NSObject {
    
 }

-@property (nonatomic, retain) NSColor* color;
-@property (nonatomic, assign) IJSVGColorTypeFlags flags;
+@property (nonatomic, strong) NSColor* color;
+@property (nonatomic, assign) IJSVGColorUsageTraits traits;

-+ (IJSVGColorType*)typeWithColor:(NSColor*)color
-                            flags:(IJSVGColorTypeFlags)mask;
+ (IJSVGTraitedColor*)typeWithColor:(NSColor*)color
+                          traits:(IJSVGColorUsageTraits)mask;

@end
@@ -1,41 +0,0 @@
-//
-//  IJSVGColorType.m
-//  IJSVG
-//
-//  Created by Curtis Hard on 20/04/2021.
-//  Copyright © 2021 Curtis Hard. All rights reserved.
-//
-
-#import "IJSVGColorType.h"
-
-@implementation IJSVGColorType
-
- (void)dealloc
-{
-    (void)[_color release], _color = nil;
-    [super dealloc];
-}
-
-+ (IJSVGColorType*)typeWithColor:(NSColor*)color
-                           flags:(IJSVGColorTypeFlags)mask
-{
-    IJSVGColorType* type = [[[self alloc] init] autorelease];
-    type.color = color;
-    type.flags = mask;
-    return type;
-}
-
- (BOOL)isEqual:(id)object
-{
-    if([object isKindOfClass:IJSVGColorType.class] == NO) {
-        return NO;
-    }
-    return [self.color isEqual:((IJSVGColorType*)object).color];
-}
-
- (NSUInteger)hash
-{
-    return self.color.hash;
-}
-
-@end
@@ -0,0 +1,36 @@
+//
+//  IJSVGColorType.h
+//  IJSVG
+//
+//  Created by Curtis Hard on 20/04/2021.
+//  Copyright © 2021 Curtis Hard. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import <AppKit/AppKit.h>
+
+typedef NS_OPTIONS(NSInteger, IJSVGColorUsageTraits) {
+    IJSVGColorUsageTraitNone = 0,
+    IJSVGColorUsageTraitUnknown = 1 << 0,
+    IJSVGColorUsageTraitFill = 1 << 1,
+    IJSVGColorUsageTraitStroke = 1 << 2,
+    IJSVGColorUsageTraitGradientStop = 1 << 3,
+    IJSVGColorUsageTraitAll = IJSVGColorUsageTraitFill | IJSVGColorUsageTraitGradientStop |
+        IJSVGColorUsageTraitStroke
+};
+
+@interface IJSVGTraitedColor : NSObject {
+    
+}
+
+@property (nonatomic, strong) NSColor* color;
+@property (nonatomic, assign) IJSVGColorUsageTraits traits;
+
+ (IJSVGTraitedColor*)colorWithColor:(NSColor*)color
+                              traits:(IJSVGColorUsageTraits)mask;
+
+- (void)addTraits:(IJSVGColorUsageTraits)traits;
+- (void)removeTraits:(IJSVGColorUsageTraits)traits;
+- (BOOL)matchesTraits:(IJSVGColorUsageTraits)traits;
+
+@end
@@ -0,0 +1,64 @@
+//
+//  IJSVGColorType.m
+//  IJSVG
+//
+//  Created by Curtis Hard on 20/04/2021.
+//  Copyright © 2021 Curtis Hard. All rights reserved.
+//
+
+#import <IJSVG/IJSVGTraitedColor.h>
+#import <IJSVG/IJSVGColor.h>
+
+@implementation IJSVGTraitedColor
+
+ (IJSVGTraitedColor*)colorWithColor:(NSColor*)color
+                              traits:(IJSVGColorUsageTraits)traits
+{
+    IJSVGTraitedColor* type = [[self alloc] init];
+    type.color = color;
+    type.traits = traits;
+    return type;
+}
+
+- (instancetype)init
+{
+    if((self = [super init]) != nil) {
+        _traits = IJSVGColorUsageTraitNone;
+    }
+    return self;
+}
+
+- (BOOL)isEqual:(id)object
+{
+    if([object isKindOfClass:IJSVGTraitedColor.class] == NO) {
+        return NO;
+    }
+    return [self.color isEqual:((IJSVGTraitedColor*)object).color];
+}
+
+- (void)setColor:(NSColor *)color
+{
+    _color = [IJSVGColor computeColorSpace:color];
+}
+
+- (NSUInteger)hash
+{
+    return self.color.hash;
+}
+
+- (void)addTraits:(IJSVGColorUsageTraits)traits
+{
+    _traits |= traits;
+}
+
+- (void)removeTraits:(IJSVGColorUsageTraits)traits
+{
+    _traits = _traits & ~traits;
+}
+
+- (BOOL)matchesTraits:(IJSVGColorUsageTraits)traits
+{
+    return (self.traits & traits) == traits;
+}
+
+@end
@@ -0,0 +1,43 @@
+//
+//  IJSVGColorList.h
+//  IconJar
+//
+//  Created by Curtis Hard on 07/07/2019.
+//  Copyright © 2019 Curtis Hard. All rights reserved.
+//
+
+#import <IJSVG/IJSVGColor.h>
+#import <IJSVG/IJSVGTraitedColor.h>
+#import <Foundation/Foundation.h>
+
+@interface IJSVGReplacementColor : IJSVGTraitedColor
+
+@property (nonatomic, strong) NSColor* replacementColor;
+
+@end
+
+@interface IJSVGTraitedColorStorage : NSObject {
+
+@private
+    NSMutableArray<IJSVGReplacementColor*>* _replacementColors;
+    NSMutableSet<IJSVGTraitedColor*>* _colors;
+    IJSVGColorUsageTraits _traits;
+    IJSVGColorUsageTraits _replacementTraits;
+}
+
+@property (nonatomic, readonly) NSUInteger count;
+@property (nonatomic, readonly) NSSet<IJSVGTraitedColor*>* colors;
+@property (nonatomic, readonly) NSUInteger replacedColorCount;
+
+- (void)addTraits:(IJSVGColorUsageTraits)traits;
+- (void)addColor:(IJSVGTraitedColor*)color;
+- (void)replaceColor:(NSColor*)replaceColor
+           withColor:(NSColor*)withColor
+              traits:(IJSVGColorUsageTraits)traits;
+- (void)unionColorStorage:(IJSVGTraitedColorStorage*)colorList;
+- (NSColor*)colorForColor:(NSColor*)color
+           matchingTraits:(IJSVGColorUsageTraits)traits;
+- (BOOL)matchesReplacementTraits:(IJSVGColorUsageTraits)traits;
+- (BOOL)matchesTraits:(IJSVGColorUsageTraits)traits;
+
+@end
@@ -0,0 +1,146 @@
+//
+//  IJSVGColorList.m
+//  IconJar
+//
+//  Created by Curtis Hard on 07/07/2019.
+//  Copyright © 2019 Curtis Hard. All rights reserved.
+//
+
+#import <IJSVG/IJSVGTraitedColorStorage.h>
+
+@implementation IJSVGReplacementColor
+
+- (void)setReplacementColor:(NSColor*)replacementColor
+{
+    _replacementColor = [IJSVGColor computeColorSpace:replacementColor];
+}
+
+@end
+
+@implementation IJSVGTraitedColorStorage
+
+- (instancetype)init
+{
+    if((self = [super init]) != nil) {
+        _replacementColors = [[NSMutableArray alloc] init];
+        _colors = [[NSMutableSet alloc] init];
+        _replacementTraits = IJSVGColorUsageTraitNone;
+        _traits = IJSVGColorUsageTraitNone;
+    }
+    return self;
+}
+
+- (void)addColor:(IJSVGTraitedColor*)color
+{
+    if([_colors containsObject:color] == YES) {
+        void (^handler)(IJSVGTraitedColor * _Nonnull obj, BOOL * _Nonnull stop) =
+        ^(IJSVGTraitedColor * _Nonnull obj, BOOL * _Nonnull stop) {
+            if([obj isEqual:color] == YES) {
+                [obj addTraits:color.traits];
+                *stop = YES;
+            }
+        };
+        [_colors enumerateObjectsUsingBlock:handler];
+        return;
+    }
+    _traits |= color.traits;
+    [_colors addObject:color];
+}
+
+- (void)addTraits:(IJSVGColorUsageTraits)traits
+{
+    for(IJSVGTraitedColor* color in _colors) {
+        [color addTraits:traits];
+    }
+}
+
+- (void)replaceColor:(NSColor*)replaceColor
+           withColor:(NSColor*)withColor
+              traits:(IJSVGColorUsageTraits)traits
+{
+    replaceColor = [IJSVGColor computeColorSpace:replaceColor];
+    withColor = [IJSVGColor computeColorSpace:withColor];
+    IJSVGReplacementColor* repColor = [self replacementColorForColor:replaceColor
+                                                           withColor:withColor];
+    if(repColor == nil) {
+        repColor = [[IJSVGReplacementColor alloc] init];
+        repColor.color = replaceColor;
+        repColor.replacementColor = withColor;
+        [_replacementColors addObject:repColor];
+    }
+    _replacementTraits |= traits;
+    [repColor addTraits:traits];
+}
+
+- (IJSVGReplacementColor*)replacementColorForColor:(NSColor*)replacementColor
+                                         withColor:(NSColor*)withColor
+{
+    for(IJSVGReplacementColor* color in _replacementColors) {
+        if([color.color isEqual:color] == YES &&
+           [color.replacementColor isEqual:withColor] == YES) {
+            return color;
+        }
+    }
+    return nil;
+}
+
+- (IJSVGReplacementColor*)replacementColorForColor:(NSColor*)color
+                                    matchingTraits:(IJSVGColorUsageTraits)traits
+{
+    for(IJSVGReplacementColor* replacementColor in _replacementColors) {
+        if([replacementColor.color isEqual:color] &&
+           [replacementColor matchesTraits:traits] == YES) {
+            return replacementColor;
+        }
+    }
+    return nil;
+}
+
+- (NSColor*)colorForColor:(NSColor*)color
+           matchingTraits:(IJSVGColorUsageTraits)traits
+{
+    if([self matchesReplacementTraits:traits] == NO) {
+        return nil;
+    }
+    color = [IJSVGColor computeColorSpace:color];
+    IJSVGReplacementColor* repColor = nil;
+    if((repColor = [self replacementColorForColor:color
+                                   matchingTraits:traits]) != nil) {
+        return repColor.replacementColor;
+    }
+    return nil;
+}
+
+- (void)unionColorStorage:(IJSVGTraitedColorStorage*)colorList
+{
+    for(IJSVGTraitedColor* traitedColor in colorList.colors) {
+        [self addColor:traitedColor];
+    }
+}
+
+- (BOOL)matchesTraits:(IJSVGColorUsageTraits)traits
+{
+    return (_traits & traits) == traits;
+}
+
+- (BOOL)matchesReplacementTraits:(IJSVGColorUsageTraits)traits
+{
+    return (_replacementTraits & traits) == traits;
+}
+
+- (NSUInteger)replacedColorCount
+{
+    return _replacementColors.count;
+}
+
+- (NSUInteger)count
+{
+    return _colors.count;
+}
+
+- (NSSet<IJSVGTraitedColor*>*)colors
+{
+    return _colors;
+}
+
+@end
@@ -26,7 +26,7 @@ typedef NS_ENUM(NSInteger, IJSVGCommandType) {
@property (nonatomic, assign) CGFloat* parameters;
@property (nonatomic, assign) NSInteger parameterCount;
@property (nonatomic, assign) IJSVGCommandType type;
-@property (nonatomic, retain) NSArray<IJSVGCommand*>* subCommands;
+@property (nonatomic, strong) NSArray<IJSVGCommand*>* subCommands;
@property (nonatomic, assign) IJSVGCommand* previousCommand;
@property (nonatomic, assign) BOOL isSubCommand;

@@ -6,19 +6,19 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGCommand.h"
-#import "IJSVGUtils.h"
-
-#import "IJSVGCommandClose.h"
-#import "IJSVGCommandCurve.h"
-#import "IJSVGCommandEllipticalArc.h"
-#import "IJSVGCommandHorizontalLine.h"
-#import "IJSVGCommandLineTo.h"
-#import "IJSVGCommandMove.h"
-#import "IJSVGCommandQuadraticCurve.h"
-#import "IJSVGCommandSmoothCurve.h"
-#import "IJSVGCommandSmoothQuadraticCurve.h"
-#import "IJSVGCommandVerticalLine.h"
+#import <IJSVG/IJSVGCommand.h>
+#import <IJSVG/IJSVGUtils.h>
+#import <IJSVG/IJSVGCommandClose.h>
+#import <IJSVG/IJSVGCommandCurve.h>
+#import <IJSVG/IJSVGCommandEllipticalArc.h>
+#import <IJSVG/IJSVGCommandHorizontalLine.h>
+#import <IJSVG/IJSVGCommandLineTo.h>
+#import <IJSVG/IJSVGCommandMove.h>
+#import <IJSVG/IJSVGCommandQuadraticCurve.h>
+#import <IJSVG/IJSVGCommandSmoothCurve.h>
+#import <IJSVG/IJSVGCommandSmoothQuadraticCurve.h>
+#import <IJSVG/IJSVGCommandVerticalLine.h>
+#import <IJSVG/IJSVGThreadManager.h>

@implementation IJSVGCommand

@@ -112,28 +112,34 @@

 + (NSArray<IJSVGCommand*>*)commandsForDataCharacters:(const char*)buffer
 {
-    IJSVGPathDataStream* stream = IJSVGPathDataStreamCreateDefault();
+    IJSVGThreadManager* manager = IJSVGThreadManager.currentManager;
    NSArray<IJSVGCommand*>* commands = [self commandsForDataCharacters:buffer
-                                                            dataStream:stream];
-    IJSVGPathDataStreamRelease(stream);
+                                                            dataStream:manager.pathDataStream];
    return commands;
 }

-+ (NSArray<IJSVGCommand*>*)commandsForDataCharacters:(const char*)buffer
+ (NSArray<IJSVGCommand*>*)commandsForDataCharacters:(const char*)unsafeBuffer
                                          dataStream:(IJSVGPathDataStream*)dataStream
 {
-    NSMutableArray<IJSVGCommand*>* commands = [[[NSMutableArray alloc] init] autorelease];
-    NSUInteger len = strlen(buffer);
+    NSMutableArray<IJSVGCommand*>* commands = [[NSMutableArray alloc] init];
+    NSUInteger len = strlen(unsafeBuffer);
    NSUInteger lastIndex = len - 1;
+    
+    // we need to trim the buffer first as any given string given to us
+    // could be unsafe and have random whitespace at the extremes.
+    size_t bufferLength = sizeof(char)*(len + 1);
+    char* buffer = (char*)malloc(bufferLength);
+    memcpy(buffer, unsafeBuffer, bufferLength);
+    IJSVGTrimCharBuffer(buffer);

    // make sure we plus 1 for the null byte
-    char* charBuffer = (char*)malloc(sizeof(char)*(len + 1));
+    char* charBuffer = (char*)malloc(bufferLength);
    NSInteger start = 0;
-    for (NSInteger i = 0; i < len; i++) {
+    for (NSInteger i = start; i < len; i++) {
        char nextChar = buffer[i + 1];
        BOOL atEnd = i == lastIndex;
        BOOL isStartCommand = IJSVGIsLegalCommandCharacter(nextChar);
-        if (isStartCommand == YES || atEnd == YES) {
+        if(isStartCommand == YES || atEnd == YES) {

            // copy memory from current buffer
            NSInteger index = ((i + 1) - start);
@@ -151,17 +157,27 @@

            // previous command is actual subcommand
            Class commandClass = [IJSVGCommand commandClassForCommandChar:commandString[0]];
-            IJSVGCommand* command = nil;
-            command = (IJSVGCommand*)[[[commandClass alloc] initWithCommandStringBuffer:commandString
-                                                                             dataStream:dataStream] autorelease];
-            
-            [commands addObject:command];
+            if(commandClass != nil) {
+                IJSVGCommand* command = nil;
+                command = (IJSVGCommand*)[[commandClass alloc] initWithCommandStringBuffer:commandString
+                                                                                dataStream:dataStream];
+                
+                [commands addObject:command];
+            }
+#if DEBUG
+            else {
+                // if we get here then the command buffer is invalid, nothing we can
+                // do about it, just invalid data.
+                NSLog(@"\"%s\" is not a valid command instruction set", commandString);
+            }
+#endif
            
            // free the memory as at this point, we are done with it
            (void)free(commandString), commandString = NULL;
        }
    }
    (void)free(charBuffer), charBuffer = NULL;
+    (void)free(buffer), buffer = NULL;
    return commands;
 }

@@ -170,7 +186,7 @@
                                    bounds:(CGRect)bounds
 {
    NSMutableArray<IJSVGCommand*>* newCommands = nil;
-    newCommands = [[[NSMutableArray alloc] initWithCapacity:commands.count] autorelease];
+    newCommands = [[NSMutableArray alloc] initWithCapacity:commands.count];
    for(IJSVGCommand* command in commands) {
        IJSVGCommand* nCommand = [command commandByConvertingToUnits:unitType
                                                         boundingBox:bounds];
@@ -181,17 +197,15 @@

 - (void)dealloc
 {
-    (void)([_subCommands release]), _subCommands = nil;
-    if (_parameters) {
+    if(_parameters) {
        (void)(free(_parameters)), _parameters = nil;
    }
-    [super dealloc];
 }

 - (id)initWithCommandStringBuffer:(const char*)str
                       dataStream:(IJSVGPathDataStream*)dataStream
 {
-    if ((self = [super init]) != nil) {
+    if((self = [super init]) != nil) {
        // work out the basics
        _currentIndex = 0;
        _command = str[0];
@@ -202,15 +216,15 @@
        _parameters = IJSVGParsePathDataStreamSequence(str, strlen(str),
            dataStream, sequence, paramCount, &sets);

-        if (sets <= 1) {
+        if(sets <= 1) {
            CGFloat* subParams = [self parametersFromIndexOffset:0];
            IJSVGCommand* command = [self subcommandWithParameters:subParams
                                                        paramCount:paramCount
                                                   previousCommand:nil];
-            _subCommands = @[ command ].retain;
+            _subCommands = @[ command ];
        } else {
            NSMutableArray<IJSVGCommand*>* subCommandArray = nil;
-            subCommandArray = [[NSMutableArray alloc] initWithCapacity:sets].autorelease;
+            subCommandArray = [[NSMutableArray alloc] initWithCapacity:sets];

            // interate over the sets
            IJSVGCommand* lastCommand = nil;
@@ -239,8 +253,7 @@

 - (void)setSubCommands:(NSArray<IJSVGCommand*>*)subCommands
 {
-    (void)[_subCommands release], _subCommands = nil;
-    _subCommands = subCommands.retain;
+    _subCommands = subCommands;
 }

 - (id)copyWithZone:(NSZone *)zone
@@ -257,9 +270,9 @@
    
    IJSVGCommand* lastCommand = nil;
    NSMutableArray<IJSVGCommand*>* subcommands = nil;
-    subcommands = [[[NSMutableArray alloc] initWithCapacity:self.subCommands.count] autorelease];
+    subcommands = [[NSMutableArray alloc] initWithCapacity:self.subCommands.count];
    for(IJSVGCommand* subcommand in self.subCommands) {
-        IJSVGCommand* subCopy = [[subcommand copy] autorelease];
+        IJSVGCommand* subCopy = subcommand.copy;
        subCopy.previousCommand = lastCommand;
        subCopy.isSubCommand = lastCommand != nil;
        [subcommands addObject:subCopy];
@@ -272,7 +285,7 @@
 {
    CGFloat* subParams = 0;
    NSInteger req = [self.class requiredParameterCount];
-    if (req != 0) {
+    if(req != 0) {
        subParams = (CGFloat*)malloc(req * sizeof(CGFloat));
        memcpy(subParams, &self.parameters[index * req], sizeof(CGFloat) * req);
    }
@@ -284,7 +297,7 @@
                          previousCommand:(IJSVGCommand*)aPreviousCommand
 {
    // create a subcommand per set
-    IJSVGCommand* c = [[[self.class alloc] init] autorelease];
+    IJSVGCommand* c = [[self.class alloc] init];
    c.parameterCount = paramCount;
    c.parameters = subParams;
    c.type = self.type;
@@ -330,9 +343,9 @@

 - (NSString *)description
 {
-    NSMutableString* str = [[[NSMutableString alloc] init] autorelease];
+    NSMutableString* str = [[NSMutableString alloc] init];
    [str appendFormat:@"%c ",_command];
-    NSMutableArray* args = [[[NSMutableArray alloc] initWithCapacity:_parameterCount] autorelease];
+    NSMutableArray* args = [[NSMutableArray alloc] initWithCapacity:_parameterCount];
    for(int i = 0; i < _parameterCount; i++) {
        [args addObject:[NSString stringWithFormat:@"%f",_parameters[i]]];
    }
@@ -346,7 +359,7 @@
    IJSVGCommand* copy = self.copy;
    [copy convertToUnits:unitType
             boundingBox:boundingBox];
-    return [copy autorelease];
+    return copy;
 }

@end
@@ -6,7 +6,7 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGCommand.h"
+#import <IJSVG/IJSVGCommand.h>
 #import <Foundation/Foundation.h>

@interface IJSVGCommandClose : IJSVGCommand
@@ -6,7 +6,7 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGCommandClose.h"
+#import <IJSVG/IJSVGCommandClose.h>

@implementation IJSVGCommandClose

@@ -6,7 +6,7 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGCommand.h"
+#import <IJSVG/IJSVGCommand.h>
 #import <Foundation/Foundation.h>

@interface IJSVGCommandCurve : IJSVGCommand
@@ -6,7 +6,7 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGCommandCurve.h"
+#import <IJSVG/IJSVGCommandCurve.h>

@implementation IJSVGCommandCurve

@@ -22,7 +22,7 @@
                 type:(IJSVGCommandType)type
                 path:(CGMutablePathRef)path
 {
-    if (type == kIJSVGCommandTypeAbsolute) {
+    if(type == kIJSVGCommandTypeAbsolute) {
        CGPathAddCurveToPoint(path, NULL, params[0], params[1],
                              params[2], params[3],
                              params[4], params[5]);
@@ -6,7 +6,7 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGCommand.h"
+#import <IJSVG/IJSVGCommand.h>
 #import <Foundation/Foundation.h>

@interface IJSVGCommandEllipticalArc : IJSVGCommand
@@ -6,8 +6,8 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGCommandEllipticalArc.h"
-#import "IJSVGUtils.h"
+#import <IJSVG/IJSVGCommandEllipticalArc.h>
+#import <IJSVG/IJSVGUtils.h>

@implementation IJSVGCommandEllipticalArc

@@ -49,11 +49,11 @@ static IJSVGPathDataSequence* _sequence;
    BOOL largeArcFlag = NO;
    BOOL sweepFlag = NO;
    
-    radii = [currentCommand readPoint];
-    xAxisRotation = [currentCommand readFloat];
-    largeArcFlag = [currentCommand readBOOL];
-    sweepFlag = [currentCommand readBOOL];
-    arcEndPoint = [currentCommand readPoint];
+    radii = currentCommand.readPoint;
+    xAxisRotation = currentCommand.readFloat;
+    largeArcFlag = currentCommand.readBOOL;
+    sweepFlag = currentCommand.readBOOL;
+    arcEndPoint = currentCommand.readPoint;
    
    CGFloat rx = fabs(radii.x);
    CGFloat ry = fabs(radii.y);
@@ -61,7 +61,7 @@ static IJSVGPathDataSequence* _sequence;
    xAxisRotation *= M_PI / 180.f;
    xAxisRotation = fmod(xAxisRotation, 2.f * M_PI);

-    if (type == kIJSVGCommandTypeRelative) {
+    if(type == kIJSVGCommandTypeRelative) {
        arcEndPoint.x += pathCurrentPoint.x;
        arcEndPoint.y += pathCurrentPoint.y;
    }
@@ -72,7 +72,7 @@ static IJSVGPathDataSequence* _sequence;
    CGFloat x2 = arcEndPoint.x;
    CGFloat y2 = arcEndPoint.y;
    
-    if (rx == 0.f || ry == 0.f) {
+    if(rx == 0.f || ry == 0.f) {
        CGPathAddLineToPoint(path, NULL, x2, y2);
        return;
    }
@@ -90,7 +90,7 @@ static IJSVGPathDataSequence* _sequence;

    CGFloat delta = xp_2 / rx_2 + yp_2 / ry_2;
    
-    if (delta > 1.f) {
+    if(delta > 1.f) {
        rx *= sqrt(delta);
        ry *= sqrt(delta);
        rx_2 = rx * rx;
@@ -120,11 +120,11 @@ static IJSVGPathDataSequence* _sequence;
    
    CGFloat angleDelta = endAngle - startAngle;;
    
-    if (sweepFlag == YES) {
-        if (angleDelta < 0.f) {
+    if(sweepFlag == YES) {
+        if(angleDelta < 0.f) {
            angleDelta += 2.f * M_PI;
        }
-    } else if (angleDelta > 0.f) {
+    } else if(angleDelta > 0.f) {
        angleDelta = angleDelta - 2.f * M_PI;
    }
    
@@ -6,7 +6,7 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGCommand.h"
+#import <IJSVG/IJSVGCommand.h>
 #import <Foundation/Foundation.h>

@interface IJSVGCommandHorizontalLine : IJSVGCommand
@@ -6,7 +6,7 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGCommandHorizontalLine.h"
+#import <IJSVG/IJSVGCommandHorizontalLine.h>

@implementation IJSVGCommandHorizontalLine

@@ -22,7 +22,7 @@
                 type:(IJSVGCommandType)type
                 path:(CGMutablePathRef)path
 {
-    if (type == kIJSVGCommandTypeAbsolute) {
+    if(type == kIJSVGCommandTypeAbsolute) {
        CGPathAddLineToPoint(path, NULL, params[0], CGPathGetCurrentPoint(path).y);
        return;
    }
@@ -6,7 +6,7 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGCommand.h"
+#import <IJSVG/IJSVGCommand.h>
 #import <Foundation/Foundation.h>

@interface IJSVGCommandLineTo : IJSVGCommand
@@ -6,7 +6,7 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGCommandLineTo.h"
+#import <IJSVG/IJSVGCommandLineTo.h>

@implementation IJSVGCommandLineTo

@@ -22,7 +22,7 @@
                 type:(IJSVGCommandType)type
                 path:(CGMutablePathRef)path
 {
-    if (type == kIJSVGCommandTypeAbsolute) {
+    if(type == kIJSVGCommandTypeAbsolute) {
        CGPathAddLineToPoint(path, NULL, params[0], params[1]);
        return;
    }
@@ -6,7 +6,7 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGCommand.h"
+#import <IJSVG/IJSVGCommand.h>
 #import <Foundation/Foundation.h>

@interface IJSVGCommandMove : IJSVGCommand
@@ -6,8 +6,8 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGCommandLineTo.h"
-#import "IJSVGCommandMove.h"
+#import <IJSVG/IJSVGCommandLineTo.h>
+#import <IJSVG/IJSVGCommandMove.h>

@implementation IJSVGCommandMove

@@ -25,7 +25,7 @@
 {
    // move to's allow more then one move to, but if there are more then one,
    // we need to run the line to instead...who knew!
-    if (command.class == self.class && currentCommand.isSubCommand == YES) {
+    if(command.class == self.class && currentCommand.isSubCommand == YES) {
        [IJSVGCommandLineTo runWithParams:params
                               paramCount:count
                                  command:currentCommand
@@ -40,7 +40,7 @@
    // relative but there is no previous command which means
    // there is no current point. Asking for current point on an empty
    // path will result in an exception being thrown
-    if (type == kIJSVGCommandTypeAbsolute || command == nil) {
+    if(type == kIJSVGCommandTypeAbsolute || command == nil) {
        CGPathMoveToPoint(path, NULL,
                          params[0], params[1]);
        return;
@@ -6,7 +6,7 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGCommand.h"
+#import <IJSVG/IJSVGCommand.h>
 #import <Foundation/Foundation.h>

@interface IJSVGCommandQuadraticCurve : IJSVGCommand
@@ -6,8 +6,8 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGCommandQuadraticCurve.h"
-#import "IJSVGUtils.h"
+#import <IJSVG/IJSVGCommandQuadraticCurve.h>
+#import <IJSVG/IJSVGUtils.h>

@implementation IJSVGCommandQuadraticCurve

@@ -23,7 +23,7 @@
                 type:(IJSVGCommandType)type
                 path:(CGMutablePathRef)path
 {
-    if (type == kIJSVGCommandTypeAbsolute) {
+    if(type == kIJSVGCommandTypeAbsolute) {
        CGPathAddQuadCurveToPoint(path, NULL, params[0], params[1],
                                  params[2], params[3]);
        return;
@@ -6,7 +6,7 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGCommand.h"
+#import <IJSVG/IJSVGCommand.h>
 #import <Foundation/Foundation.h>

@interface IJSVGCommandSmoothCurve : IJSVGCommand
@@ -6,9 +6,9 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGCommandCurve.h"
-#import "IJSVGCommandSmoothCurve.h"
-#import "IJSVGUtils.h"
+#import <IJSVG/IJSVGCommandCurve.h>
+#import <IJSVG/IJSVGCommandSmoothCurve.h>
+#import <IJSVG/IJSVGUtils.h>

@implementation IJSVGCommandSmoothCurve

@@ -26,10 +26,10 @@
 {
    CGPoint currentPoint = CGPathGetCurrentPoint(path);
    CGPoint firstControl = CGPointMake(currentPoint.x, currentPoint.y);
-    if (command != nil) {
-        if (command.class == [IJSVGCommandCurve class] || command.class == self.class) {
-            if (command.class == [IJSVGCommandCurve class]) {
-                if (command.type == kIJSVGCommandTypeAbsolute) {
+    if(command != nil) {
+        if(command.class == [IJSVGCommandCurve class] || command.class == self.class) {
+            if(command.class == [IJSVGCommandCurve class]) {
+                if(command.type == kIJSVGCommandTypeAbsolute) {
                    firstControl = CGPointMake(-1 * command.parameters[2] + 2 * currentPoint.x,
                        -1 * command.parameters[3] + 2 * currentPoint.y);
                } else {
@@ -39,7 +39,7 @@
                        -1 * (command.parameters[3] + oldPoint.y) + 2 * currentPoint.y);
                }
            } else {
-                if (command.type == kIJSVGCommandTypeAbsolute) {
+                if(command.type == kIJSVGCommandTypeAbsolute) {
                    firstControl = CGPointMake(-1 * command.parameters[0] + 2 * currentPoint.x,
                        -1 * command.parameters[1] + 2 * currentPoint.y);
                } else {
@@ -51,7 +51,7 @@
            }
        }
    }
-    if (type == kIJSVGCommandTypeAbsolute) {
+    if(type == kIJSVGCommandTypeAbsolute) {
        CGPathAddCurveToPoint(path, NULL, firstControl.x, firstControl.y,
                              params[0], params[1], params[2], params[3]);
        return;
@@ -6,7 +6,7 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGCommand.h"
+#import <IJSVG/IJSVGCommand.h>
 #import <Foundation/Foundation.h>

@interface IJSVGCommandSmoothQuadraticCurve : IJSVGCommand
@@ -6,9 +6,9 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGCommandQuadraticCurve.h"
-#import "IJSVGCommandSmoothQuadraticCurve.h"
-#import "IJSVGUtils.h"
+#import <IJSVG/IJSVGCommandQuadraticCurve.h>
+#import <IJSVG/IJSVGCommandSmoothQuadraticCurve.h>
+#import <IJSVG/IJSVGUtils.h>

@implementation IJSVGCommandSmoothQuadraticCurve

@@ -27,10 +27,10 @@
    CGPoint lastControlPoint = IJSVGPathGetLastQuadraticCommandPoint(path);
    CGPoint currentPoint = CGPathGetCurrentPoint(path);
    CGPoint commandPoint = CGPointMake(currentPoint.x, currentPoint.y);
-    if (command != nil) {
-        if (command.class == IJSVGCommandQuadraticCurve.class) {
+    if(command != nil) {
+        if(command.class == IJSVGCommandQuadraticCurve.class) {
            // quadratic curve
-            if (command.type == kIJSVGCommandTypeAbsolute) {
+            if(command.type == kIJSVGCommandTypeAbsolute) {
                commandPoint = NSMakePoint(-1 * command.parameters[0] + 2 * currentPoint.x,
                    -1 * command.parameters[1] + 2 * currentPoint.y);
            } else {
@@ -39,14 +39,14 @@
                commandPoint = CGPointMake(-1 * (command.parameters[0] + oldPoint.x) + 2 * (currentPoint.x),
                    -1 * (command.parameters[1] + oldPoint.y) + 2 * currentPoint.y);
            }
-        } else if (command.class == self.class) {
+        } else if(command.class == self.class) {
            // smooth quadratic curve
            commandPoint = CGPointMake(-1 * (lastControlPoint.x) + 2 * (currentPoint.x),
                -1 * (lastControlPoint.y) + 2 * currentPoint.y);
        }
    }
 //    path.lastControlPoint = commandPoint;
-    if (type == kIJSVGCommandTypeAbsolute) {
+    if(type == kIJSVGCommandTypeAbsolute) {
        CGPathAddQuadCurveToPoint(path, NULL, commandPoint.x, commandPoint.y,
                                  params[0], params[1]);
        return;
@@ -6,7 +6,7 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGCommand.h"
+#import <IJSVG/IJSVGCommand.h>
 #import <Foundation/Foundation.h>

@interface IJSVGCommandVerticalLine : IJSVGCommand
@@ -6,7 +6,7 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGCommandVerticalLine.h"
+#import <IJSVG/IJSVGCommandVerticalLine.h>

@implementation IJSVGCommandVerticalLine

@@ -22,7 +22,7 @@
                 type:(IJSVGCommandType)type
                 path:(CGMutablePathRef)path
 {
-    if (type == kIJSVGCommandTypeAbsolute) {
+    if(type == kIJSVGCommandTypeAbsolute) {
        CGPathAddLineToPoint(path, NULL, CGPathGetCurrentPoint(path).x, params[0]);
        return;
    }
@@ -6,7 +6,7 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import <IJSVG/IJSVGColorList.h>
+#import <IJSVG/IJSVGTraitedColorStorage.h>
 #import <IJSVG/IJSVGRootNode.h>
 #import <IJSVG/IJSVGExporter.h>
 #import <IJSVG/IJSVGGradientLayer.h>
@@ -16,42 +16,20 @@
 #import <IJSVG/IJSVGLayerTree.h>
 #import <IJSVG/IJSVGParser.h>
 #import <IJSVG/IJSVGRendering.h>
-#import <IJSVG/IJSVGRenderingStyle.h>
+#import <IJSVG/IJSVGStyle.h>
 #import <IJSVG/IJSVGTransaction.h>
 #import <Foundation/Foundation.h>

@class IJSVG;

-typedef NS_OPTIONS(NSInteger, IJSVGMatchPropertiesMask) {
-    IJSVGMatchPropertyNone = 0,
-    IJSVGMatchPropertyContainsMaskedElement = 1 << 0,
-    IJSVGMatchPropertyContainsStrokedElement = 1 << 1
-};
-
-@protocol IJSVGDelegate <NSObject, IJSVGParserDelegate>
-
-@optional
- (void)svg:(IJSVG*)svg
-foundSubSVG:(IJSVG*)subSVG
-withSVGString:(NSString*)subSVGString;
-
-@end
-
-@interface IJSVG : NSObject <NSPasteboardWriting, IJSVGParserDelegate> {
+@interface IJSVG : NSObject <NSPasteboardWriting> {

@private
    IJSVGRootNode* _rootNode;
-    CGFloat _scale;
-    CGFloat _clipScale;
-    id<IJSVGDelegate> _delegate;
    IJSVGLayerTree* _layerTree;
    CGRect _viewBox;
    CGFloat _backingScale;
-    NSMutableDictionary* _replacementColors;
-
-    struct {
-        unsigned int shouldHandleSubSVG : 1;
-    } _respondsTo;
+    IJSVGUnitSize* _intrinsicSize;
 }

 // set this to be called when the layer is about to draw, it will call this
@@ -63,37 +41,59 @@ withSVGString:(NSString*)subSVGString;
 // global overwriting rules for when rendering an SVG, this will overide any
 // fillColor, strokeColor, pattern and gradient fill
@property (nonatomic, assign) IJSVGRenderQuality renderQuality;
-@property (nonatomic, assign) BOOL clipToViewport;
-@property (nonatomic, retain) IJSVGRenderingStyle* renderingStyle;
-@property (nonatomic, readonly) IJSVGUnitSize * intrinsicSize;
+@property (nonatomic, strong) IJSVGStyle* style;
+
@property (nonatomic, copy) NSString* title;
@property (nonatomic, copy) NSString* desc;
-@property (nonatomic, retain) IJSVGLayerTree* layerTree;
-@property (nonatomic, retain) IJSVGRootLayer* rootLayer;
+@property (nonatomic, strong) IJSVGLayerTree* layerTree;
+@property (nonatomic, strong) IJSVGRootLayer* rootLayer;
+@property (nonatomic, assign) BOOL ignoreIntrinsicSize;
+
+@property (nonatomic, readonly) IJSVGTraitedColorStorage* colors;
+
+// The size of the SVG either computed by its intrinsicSize of its viewBox
+// If the size if % values, it will use the defaultSize
+@property (nonatomic, readonly) CGSize size;
+
+// Will return true if the intrinsic size is a % value
+@property (nonatomic, readonly) BOOL hasDynamicSize;
+
+// This is used when the intrinsic size is a % value, e.g. 100% x 100%
+@property (nonatomic, assign) CGSize defaultSize;
+
+// bitmask of which dimentions were implicitly set on the SVG
+@property (nonatomic, readonly) IJSVGIntrinsicDimensions intrinsicDimensions;

 - (void)prepForDrawingInView:(NSView*)view;
- (BOOL)isFont;
- (IJSVGGroup*)rootNode;
- (NSRect)viewBox;
- (NSArray<IJSVGPath*>*)glyphs;
+- (IJSVGRootNode*)rootNode;
+- (CGRect)viewBox;
+- (CGSize)sizeWithDefaultSize:(CGSize)size;
 - (NSString*)identifier;
- (NSArray<IJSVG*>*)subSVGs:(BOOL)recursive;
+- (NSSet<IJSVG*>*)directDescendSVGs;
+- (IJSVGExporter*)exporterWithSize:(CGSize)size
+                           options:(IJSVGExporterOptions)options
+              floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions;
+- (NSString*)SVGStringWithSize:(CGSize)size
+                       options:(IJSVGExporterOptions)options;
+- (NSString*)SVGStringWithSize:(CGSize)size
+                       options:(IJSVGExporterOptions)options
+          floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions;
 - (NSString*)SVGStringWithOptions:(IJSVGExporterOptions)options;
 - (NSString*)SVGStringWithOptions:(IJSVGExporterOptions)options
             floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions;

-+ (id)svgNamed:(NSString*)string;
-+ (id)svgNamed:(NSString*)string
-      delegate:(id<IJSVGDelegate>)delegate;
+ (id)SVGNamed:(NSString*)string;
+
+ (IJSVG*)SVGFromCGPathRef:(CGPathRef)path;
+ (IJSVG*)SVGFromCGPathRef:(CGPathRef)path
+                   flipped:(BOOL)flipped;
+

 - (id)initWithImage:(NSImage*)image;
+- (id)initWithRootNode:(IJSVGRootNode*)rootNode;

 - (id)initWithSVGLayer:(IJSVGGroupLayer*)group
-               viewBox:(NSRect)viewBox;
-
- (id)initWithSVGString:(NSString*)string
-                  error:(NSError**)error
-               delegate:(id<IJSVGDelegate>)delegate;
+               viewBox:(CGRect)viewBox;

 - (id)initWithSVGString:(NSString*)string;
 - (id)initWithSVGString:(NSString*)string
@@ -106,19 +106,9 @@ withSVGString:(NSString*)subSVGString;
 - (id)initWithFile:(NSString*)file;
 - (id)initWithFile:(NSString*)file
             error:(NSError**)error;
- (id)initWithFile:(NSString*)file
-          delegate:(id<IJSVGDelegate>)delegate;
- (id)initWithFile:(NSString*)file
-             error:(NSError**)error
-          delegate:(id<IJSVGDelegate>)delegate;
 - (id)initWithFilePathURL:(NSURL*)aURL;
 - (id)initWithFilePathURL:(NSURL*)aURL
                    error:(NSError**)error;
- (id)initWithFilePathURL:(NSURL*)aURL
-                 delegate:(id<IJSVGDelegate>)delegate;
- (id)initWithFilePathURL:(NSURL*)aURL
-                    error:(NSError**)error
-                 delegate:(id<IJSVGDelegate>)delegate;

 - (id)initWithDataAssetNamed:(NSDataAssetName)name
                       error:(NSError**)error;
@@ -126,45 +116,44 @@ withSVGString:(NSString*)subSVGString;
                      bundle:(NSBundle*)bundle
                       error:(NSError**)error;

- (NSImage*)imageWithSize:(NSSize)aSize;
- (NSImage*)imageWithSize:(NSSize)aSize
+- (NSImage*)imageWithSize:(CGSize)aSize;
+- (NSImage*)imageWithSize:(CGSize)aSize
                    error:(NSError**)error;
- (NSImage*)imageWithSize:(NSSize)aSize
+- (NSImage*)imageWithSize:(CGSize)aSize
                  flipped:(BOOL)flipped;
- (NSImage*)imageWithSize:(NSSize)aSize
+- (NSImage*)imageWithSize:(CGSize)aSize
                  flipped:(BOOL)flipped
                    error:(NSError**)error;
- (NSImage*)imageByMaintainingAspectRatioWithSize:(NSSize)aSize
+- (NSImage*)imageByMaintainingAspectRatioWithSize:(CGSize)aSize
                                          flipped:(BOOL)flipped
                                            error:(NSError**)error;
 - (CGImageRef)newCGImageRefWithSize:(CGSize)size
                            flipped:(BOOL)flipped
                              error:(NSError**)error;

- (BOOL)drawAtPoint:(NSPoint)point
-               size:(NSSize)size;
- (BOOL)drawAtPoint:(NSPoint)point
-               size:(NSSize)aSize
+- (BOOL)drawAtPoint:(CGPoint)point
+               size:(CGSize)size;
+- (BOOL)drawAtPoint:(CGPoint)point
+               size:(CGSize)aSize
              error:(NSError**)error;
- (BOOL)drawInRect:(NSRect)rect;
- (BOOL)drawInRect:(NSRect)rect
+- (BOOL)drawInRect:(CGRect)rect;
+- (BOOL)drawInRect:(CGRect)rect
             error:(NSError**)error;
- (void)drawInRect:(NSRect)rect
+- (void)drawInRect:(CGRect)rect
           context:(CGContextRef)context;

 - (NSData*)PDFData;
 - (NSData*)PDFData:(NSError**)error;
- (NSData*)PDFDataWithRect:(NSRect)rect;
- (NSData*)PDFDataWithRect:(NSRect)rect
+- (NSData*)PDFDataWithRect:(CGRect)rect;
+- (NSData*)PDFDataWithRect:(CGRect)rect
                     error:(NSError**)error;

- (NSRect)computeOriginalDrawingFrameWithSize:(NSSize)aSize;
+// call this to invalidate the render tree when you change the style
 - (void)setNeedsDisplay;

 // colors
- (IJSVGColorList*)colorList;
 - (void)performBlock:(dispatch_block_t)block;

 // matching
- (BOOL)matchesPropertiesWithMask:(IJSVGMatchPropertiesMask)mask;
+- (BOOL)containsNodesMatchingTraits:(IJSVGNodeTraits)mask;
@end
@@ -1,29 +0,0 @@
-//
-//  IJSVGFontConverter.h
-//  IJSVGExample
-//
-//  Created by Curtis Hard on 21/05/2015.
-//  Copyright (c) 2015 Curtis Hard. All rights reserved.
-//
-
-#import <IJSVG/IJSVG.h>
-#import <Foundation/Foundation.h>
-
-typedef void (^IJSVGFontConverterEnumerateBlock)(NSString* unicode, IJSVG* svg);
-
-@interface IJSVGFontConverter : NSObject {
-
-@private
-    NSURL* _url;
-    NSFont* _font;
-    NSMutableDictionary<NSString*, id>* _transformedPaths;
-}
-
- (id)initWithFontAtFileURL:(NSURL*)url;
- (NSFont*)font;
- (void)enumerateUsingBlock:(IJSVGFontConverterEnumerateBlock)block;
-
-+ (IJSVG*)convertIJSVGPathToSVG:(IJSVGPath*)path;
-+ (IJSVG*)convertPathToSVG:(CGPathRef)path;
-
-@end
@@ -1,127 +0,0 @@
-//
-//  IJSVGFontConverter.m
-//  IJSVGExample
-//
-//  Created by Curtis Hard on 21/05/2015.
-//  Copyright (c) 2015 Curtis Hard. All rights reserved.
-//
-
-#import "IJSVGFontConverter.h"
-#import "IJSVGShapeLayer.h"
-
-@implementation IJSVGFontConverter
-
- (void)dealloc
-{
-    (void)([_transformedPaths release]), _transformedPaths = nil;
-    (void)([_url release]), _url = nil;
-    (void)([_font release]), _font = nil;
-    [super dealloc];
-}
-
- (id)initWithFontAtFileURL:(NSURL*)url
-{
-    if ((self = [super init]) != nil) {
-        _url = [url copy];
-
-        // load the font
-        CGDataProviderRef dataProvider = CGDataProviderCreateWithURL((CFURLRef)_url);
-        CGFontRef fontRef = CGFontCreateWithDataProvider(dataProvider);
-        CTFontRef font = CTFontCreateWithGraphicsFont(fontRef, 30.f, NULL, NULL);
-
-        // toll free bridge between NSFont at CTFont :)
-        _font = [(NSFont*)font copy];
-        CGFontRelease(fontRef);
-        CGDataProviderRelease(dataProvider);
-        CFRelease(font);
-    }
-    return self;
-}
-
- (NSFont*)font
-{
-    return _font;
-}
-
- (NSArray*)allCharacters
-{
-    NSCharacterSet* charSet = _font.coveredCharacterSet;
-    NSMutableArray* array = [[[NSMutableArray alloc] init] autorelease];
-    NSStringEncoding encoding = NSUTF32LittleEndianStringEncoding;
-    for (int plane = 0; plane <= 16; plane++) {
-        if ([charSet hasMemberInPlane:plane]) {
-            UTF32Char c;
-            for (c = plane << 16; c < (plane + 1) << 16; c++) {
-                if ([charSet longCharacterIsMember:c]) {
-                    UTF32Char c1 = NSSwapHostIntToLittle(c);
-                    [array addObject:[[[NSString alloc] initWithBytes:&c1
-                                                               length:4
-                                                             encoding:encoding] autorelease]];
-                }
-            }
-        }
-    }
-    return array;
-}
-
- (void)generateMap
-{
-    CTFontRef font = (CTFontRef)_font;
-    for (NSString* charString in [self allCharacters]) {
-        // get the characters in each char
-        NSUInteger count = charString.length;
-        unichar characters[count];
-        [charString getCharacters:characters
-                            range:NSMakeRange(0, count)];
-
-        // get the glyphs
-        CGGlyph glyphs[count];
-        CTFontGetGlyphsForCharacters(font, characters, glyphs, count);
-        CGPathRef path = CTFontCreatePathForGlyph(font, glyphs[0], NULL);
-        if (path != NULL) {
-            // add SVG to the dictionary
-            NSString* key = [NSString stringWithFormat:@"%04x", [charString characterAtIndex:0]];
-            CGPathRef flippedPath = [IJSVGUtils newFlippedCGPath:path];
-            _transformedPaths[key] = (id)flippedPath;
-            CGPathRelease(flippedPath);
-        }
-        CGPathRelease(path);
-    }
-}
-
- (void)enumerateUsingBlock:(IJSVGFontConverterEnumerateBlock)block
-{
-    if (_transformedPaths == nil) {
-        _transformedPaths = [[NSMutableDictionary alloc] init];
-        [self generateMap];
-    }
-
-    for (NSString* key in _transformedPaths.allKeys) {
-        block(key, [self.class convertPathToSVG:(CGPathRef)_transformedPaths[key]]);
-    }
-}
-
-+ (IJSVG*)convertIJSVGPathToSVG:(IJSVGPath*)path
-{
-    CGPathRef flippedPath = [IJSVGUtils newFlippedCGPath:path.path];
-    IJSVG* svg = [self convertPathToSVG:flippedPath];
-    CGPathRelease(flippedPath);
-    return svg;
-}
-
-+ (IJSVG*)convertPathToSVG:(CGPathRef)path
-{
-    IJSVGBeginTransaction();
-    __block IJSVG* svg = nil;
-    IJSVGGroupLayer* layer = [[[IJSVGGroupLayer alloc] init] autorelease];
-    IJSVGShapeLayer* shape = [[[IJSVGShapeLayer alloc] init] autorelease];
-    [layer addSublayer:shape];
-    shape.path = path;
-    CGRect box = CGPathGetPathBoundingBox(path);
-    svg = [[IJSVG alloc] initWithSVGLayer:layer
-                                  viewBox:box];
-    IJSVGEndTransaction();
-    return [svg autorelease];
-}
-
-@end
@@ -6,7 +6,7 @@
 //  Copyright © 2019 Curtis Hard. All rights reserved.
 //

-#import "IJSVGParser.h"
+#import <IJSVG/IJSVGParser.h>
 #import <Cocoa/Cocoa.h>

@class IJSVG;
@@ -6,8 +6,8 @@
 //  Copyright © 2019 Curtis Hard. All rights reserved.
 //

-#import "IJSVG.h"
-#import "IJSVGImageRep.h"
+#import <IJSVG/IJSVG.h>
+#import <IJSVG/IJSVGImageRep.h>

@implementation IJSVGImageRep

@@ -23,7 +23,7 @@

 + (NSArray<NSString*>*)imageTypes
 {
-    if (@available(macOS 10.10, *)) {
+    if(@available(macOS 10.10, *)) {
        return @[ (NSString*)kUTTypeScalableVectorGraphics, @"svg" ];
    } else {
        return @[ @"public.svg-image", @"svg" ];
@@ -32,7 +32,7 @@

 + (NSArray<NSString*>*)imageUnfilteredTypes
 {
-    if (@available(macOS 10.10, *)) {
+    if(@available(macOS 10.10, *)) {
        return @[ (NSString*)kUTTypeScalableVectorGraphics, @"svg" ];
    } else {
        return @[ @"public.svg-image", @"svg" ];
@@ -42,7 +42,7 @@
 + (NSArray<NSImageRep*>*)imageRepsWithData:(NSData*)data
 {
    IJSVGImageRep* instance = [self imageRepWithData:data];
-    if (instance == nil) {
+    if(instance == nil) {
        return @[];
    }
    return @[ instance ];
@@ -50,28 +50,21 @@

 + (instancetype)imageRepWithData:(NSData*)data
 {
-    return [[[self alloc] initWithData:data] autorelease];
-}
-
- (void)dealloc
-{
-    (void)([_svg release]), _svg = nil;
-    [super dealloc];
+    return [[self alloc] initWithData:data];
 }

 - (instancetype)initWithData:(NSData*)data
 {
-    if ((self = [super init]) != nil) {
+    if((self = [super init]) != nil) {
        // grab the string from the data
        // its more then likely UTF-8...
-        NSString* string = [[[NSString alloc] initWithData:data
-                                                  encoding:NSUTF8StringEncoding] autorelease];
+        NSString* string = [[NSString alloc] initWithData:data
+                                                 encoding:NSUTF8StringEncoding];

        _svg = [[IJSVG alloc] initWithSVGString:string];

        // no valid SVG, just return nil;
-        if (_svg == nil) {
-            [self release];
+        if(_svg == nil) {
            return nil;
        }

@@ -17,7 +17,7 @@ IB_DESIGNABLE
    IJSVG* SVG;
 }

-@property (nonatomic, retain) IJSVG* SVG;
+@property (nonatomic, strong) IJSVG* SVG;

 + (IJSVGView*)viewWithSVGNamed:(NSString*)name;
 - (id)initWithSVG:(IJSVG*)anSvg;
@@ -6,7 +6,7 @@
 //  Copyright © 2017 Curtis Hard. All rights reserved.
 //

-#import "IJSVGView.h"
+#import <IJSVG/IJSVGView.h>

@implementation IJSVGView

@@ -17,20 +17,17 @@
    // make sure we call this, or block may get called for a view
    // that doesnt exist
    [SVG prepForDrawingInView:nil];
-    (void)([imageName release]), imageName = nil;
-    (void)([SVG release]), SVG = nil;
-    [super dealloc];
 }

 + (IJSVGView*)viewWithSVGNamed:(NSString*)name
 {
-    IJSVG* anSVG = [IJSVG svgNamed:name];
-    return [[[self alloc] initWithSVG:anSVG] autorelease];
+    IJSVG* anSVG = [IJSVG SVGNamed:name];
+    return [[self alloc] initWithSVG:anSVG];
 }

 - (id)initWithSVG:(IJSVG*)anSvg
 {
-    if ((self = [super init]) != nil) {
+    if((self = [super init]) != nil) {
        self.SVG = anSvg;
    }
    return self;
@@ -39,10 +36,10 @@
 - (void)awakeFromNib
 {
    // image was set via IB
-    if (imageName != nil) {
-        IJSVG* anSVG = [IJSVG svgNamed:imageName];
-        if (tintColor != nil) {
-            anSVG.renderingStyle.fillColor = tintColor;
+    if(imageName != nil) {
+        IJSVG* anSVG = [IJSVG SVGNamed:imageName];
+        if(tintColor != nil) {
+            anSVG.style.fillColor = tintColor;
        }
        self.SVG = anSVG;
    }
@@ -51,10 +48,7 @@
 - (void)setSVG:(IJSVG*)anSVG
 {
    // memory clean
-    if (SVG != nil) {
-        (void)([SVG release]), SVG = nil;
-    }
-    SVG = [anSVG retain];
+    SVG = anSVG;

    // redisplay ourself!
    [SVG prepForDrawingInView:self];
@@ -69,7 +63,7 @@
 - (void)drawRect:(NSRect)dirtyRect
 {
    // only draw if there is actually an SVG
-    if (self.SVG == nil) {
+    if(self.SVG == nil) {
        return;
    }

@@ -8,7 +8,7 @@

 #import <Foundation/Foundation.h>
 #import <IJSVG/IJSVGUtils.h>
-#import <IJSVG/IJSVGColorType.h>
+#import <IJSVG/IJSVGTraitedColor.h>

@class IJSVG;
@class IJSVGExporter;
@@ -32,10 +32,10 @@ typedef NS_OPTIONS(NSInteger, IJSVGExporterOptions) {
    IJSVGExporterOptionCollapseGroups = 1 << 6,
    IJSVGExporterOptionCleanupPaths = 1 << 7,
    IJSVGExporterOptionRemoveHiddenElements = 1 << 8,
-    IJSVGExporterOptionScaleToSizeIfNecessary = 1 << 9,
+    IJSVGExporterOptionScaleToSizeIfNecessary DEPRECATED_ATTRIBUTE = 1 << 9,
    IJSVGExporterOptionCompressOutput = 1 << 10,
    IJSVGExporterOptionCollapseGradients = 1 << 11,
-    IJSVGExporterOptionCreateClasses = 1 << 12,
+    IJSVGExporterOptionCreateClasses DEPRECATED_ATTRIBUTE = 1 << 12,
    IJSVGExporterOptionRemoveWidthHeightAttributes = 1 << 13,
    IJSVGExporterOptionColorAllowRRGGBBAA = 1 << 14,
    IJSVGExporterOptionRemoveComments = 1 << 15,
@@ -45,16 +45,17 @@ typedef NS_OPTIONS(NSInteger, IJSVGExporterOptions) {
    IJSVGExporterOptionConvertShapesToPaths = 1 << 19,
    IJSVGExporterOptionRoundTransforms = 1 << 20,
    IJSVGExporterOptionRemoveDefaultValues = 1 << 21,
+    IJSVGExporterOptionConvertStrokesToPaths = 1 << 22,
    IJSVGExporterOptionAll = IJSVGExporterOptionRemoveUselessDef | IJSVGExporterOptionRemoveUselessGroups |
        IJSVGExporterOptionCreateUseForPaths | IJSVGExporterOptionMoveAttributesToGroup |
        IJSVGExporterOptionSortAttributes | IJSVGExporterOptionCollapseGroups |
-        IJSVGExporterOptionCleanupPaths | IJSVGExporterOptionRemoveHiddenElements |
-        IJSVGExporterOptionScaleToSizeIfNecessary | IJSVGExporterOptionCompressOutput |
+        IJSVGExporterOptionCleanupPaths | IJSVGExporterOptionRemoveHiddenElements | IJSVGExporterOptionCompressOutput |
        IJSVGExporterOptionCollapseGradients | IJSVGExporterOptionRemoveWidthHeightAttributes |
        IJSVGExporterOptionColorAllowRRGGBBAA | IJSVGExporterOptionRemoveComments |
        IJSVGExporterOptionCenterWithinViewBox | IJSVGExporterOptionRemoveXMLDeclaration |
        IJSVGExporterOptionConvertArcs | IJSVGExporterOptionConvertShapesToPaths |
-        IJSVGExporterOptionRoundTransforms | IJSVGExporterOptionRemoveDefaultValues
+        IJSVGExporterOptionRoundTransforms | IJSVGExporterOptionRemoveDefaultValues |
+        IJSVGExporterOptionConvertStrokesToPaths
 };

 BOOL IJSVGExporterHasOption(IJSVGExporterOptions options, NSInteger option);
@@ -72,7 +73,7 @@ const NSDictionary<NSString*, NSString*>* IJSVGDefaultAttributes(void);
                         defaultID:(NSString* (^)(void))defaultID;
 - (NSString* _Nullable)svgExporter:(IJSVGExporter*)exporter
                    stringForColor:(NSColor*)color
-                             flags:(IJSVGColorTypeFlags)flag
+                             flags:(IJSVGColorUsageTraits)flag
                           options:(IJSVGColorStringOptions)options;


@@ -10,15 +10,13 @@

 NS_ASSUME_NONNULL_BEGIN

-typedef struct {
-    char instruction;
-    NSArray<NSString*>* params;
-} IJSVGExporterPathInstructionCommand;
+@interface IJSVGExporterPathInstructionCommand : NSObject {
+}

-typedef struct {
-    CGPoint center;
-    CGFloat radius;
-} IJSVGExporterPathInstructionCircle;
+@property (nonatomic, assign) char instruction;
+@property (nonatomic, strong) NSArray<NSString*>* params;
+
+@end

@interface IJSVGExporterPathInstruction : NSObject {

@@ -33,8 +31,6 @@ typedef struct {

 void IJSVGExporterPathInstructionRoundData(CGFloat* data, NSInteger length, IJSVGFloatingPointOptions options);
 CGFloat IJSVGExporterPathFloatToFixed(CGFloat number, int precision);
-IJSVGExporterPathInstructionCommand* IJSVGExporterPathInstructionCommandCopy(IJSVGExporterPathInstructionCommand command);
-void IJSVGExporterPathInstructionCommandFree(IJSVGExporterPathInstructionCommand* _Nullable command);

 + (NSArray<IJSVGExporterPathInstruction*>*)instructionsFromPath:(CGPathRef)path
                                           floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions;
@@ -6,37 +6,39 @@
 //  Copyright © 2017 Curtis Hard. All rights reserved.
 //

-#import "IJSVGExporter.h"
-#import "IJSVGExporterPathInstruction.h"
-#import "IJSVGUtils.h"
+#import <IJSVG/IJSVGExporter.h>
+#import <IJSVG/IJSVGExporterPathInstruction.h>
+#import <IJSVG/IJSVGUtils.h>
 #import <math.h>

+@implementation IJSVGExporterPathInstructionCommand
+@end
+
@implementation IJSVGExporterPathInstruction

@synthesize instruction = _instruction;

 - (void)dealloc
 {
-    if (_data != NULL) {
+    if(_data != NULL) {
        (void)free(_data), _data = NULL;
    }
-    if (_base != NULL) {
+    if(_base != NULL) {
        (void)free(_base), _base = NULL;
    }
-    if (_coords != NULL) {
+    if(_coords != NULL) {
        (void)free(_coords), _coords = NULL;
    }
-    [super dealloc];
 }

 - (id)initWithInstruction:(char)instruction
                dataCount:(NSInteger)floatCount
 {
-    if ((self = [super init]) != nil) {
+    if((self = [super init]) != nil) {
        _instruction = instruction;

        // only allocate if not zero
-        if (floatCount != 0) {
+        if(floatCount != 0) {
            _dataCount = floatCount;
            _data = (CGFloat*)calloc(sizeof(CGFloat), floatCount);
        }
@@ -68,36 +70,18 @@
    return _coords;
 }

-IJSVGExporterPathInstructionCommand* IJSVGExporterPathInstructionCommandCopy(IJSVGExporterPathInstructionCommand command)
-{
-    IJSVGExporterPathInstructionCommand* copy = NULL;
-    copy = (IJSVGExporterPathInstructionCommand*)malloc(sizeof(IJSVGExporterPathInstructionCommand));
-    copy->instruction = command.instruction;
-    copy->params = command.params;
-    return copy;
-}
-
-void IJSVGExporterPathInstructionCommandFree(IJSVGExporterPathInstructionCommand* _Nullable command)
-{
-    if (command != NULL) {
-        free(command);
-    }
-}
-
-+ (NSString*)pathStringWithInstructionSet:(NSArray<NSValue*>*)instructionSets
+ (NSString*)pathStringWithInstructionSet:(NSArray<IJSVGExporterPathInstructionCommand*>*)instructionSets
                     floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions
 {
    IJSVGExporterPathInstructionCommand* lastCommand = NULL;
-    NSMutableString* string = [[[NSMutableString alloc] init] autorelease];
-    for (NSValue* value in instructionSets) {
+    NSMutableString* string = [[NSMutableString alloc] init];
+    for (IJSVGExporterPathInstructionCommand* command in instructionSets) {
        // read back the bytes
-        IJSVGExporterPathInstructionCommand command;
-        [value getValue:&command];

        // add on the instruction character only if there is no current command
        // or the last command is not the same as the current command
        // if they both are the same, we still need to seperate them via a space
-        if (lastCommand == nil || (lastCommand != nil && lastCommand->instruction != command.instruction)) {
+        if(lastCommand == nil || (lastCommand != nil && lastCommand.instruction != command.instruction)) {
            [string appendFormat:@"%c", command.instruction];
        } else {
            [string appendString:@" "];
@@ -108,18 +92,15 @@ void IJSVGExporterPathInstructionCommandFree(IJSVGExporterPathInstructionCommand
        [string appendString:compressedFloats];

        // store last command
-        IJSVGExporterPathInstructionCommandFree(lastCommand);
-        lastCommand = IJSVGExporterPathInstructionCommandCopy(command);
+        lastCommand = command;
    }
-
-    IJSVGExporterPathInstructionCommandFree(lastCommand);
    return string;
 }

 + (NSString*)pathStringFromInstructions:(NSArray<IJSVGExporterPathInstruction*>*)instructions
                   floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions
 {
-    NSMutableArray* pathInstructions = [[[NSMutableArray alloc] init] autorelease];
+    NSMutableArray* pathInstructions = [[NSMutableArray alloc] init];
    for (IJSVGExporterPathInstruction* instruction in instructions) {
        CGFloat* data = instruction.data;
        const char lowerInstruction = tolower(instruction.instruction);
@@ -186,14 +167,11 @@ void IJSVGExporterPathInstructionCommandFree(IJSVGExporterPathInstructionCommand
        }

        // wrap into the command and give to the array
-        IJSVGExporterPathInstructionCommand wrapper;
-        wrapper.instruction = instruction.instruction;
-        wrapper.params = set ?: @[];
-
-        // encode and store
-        NSValue* value = [NSValue valueWithBytes:&wrapper
-                                        objCType:@encode(IJSVGExporterPathInstructionCommand)];
-        [pathInstructions addObject:value];
+        IJSVGExporterPathInstructionCommand* wrapperCommand = nil;
+        wrapperCommand = [[IJSVGExporterPathInstructionCommand alloc] init];
+        wrapperCommand.instruction = instruction.instruction;
+        wrapperCommand.params = set ?: @[];
+        [pathInstructions addObject:wrapperCommand];
    }
    return [self pathStringWithInstructionSet:pathInstructions
                         floatingPointOptions:floatingPointOptions];
@@ -210,7 +188,7 @@ void IJSVGExporterPathInstructionRoundData(CGFloat* data, NSInteger length,
    for (NSInteger i = length; i-- > 0;) {
        CGFloat d = data[i];
        CGFloat proposed = IJSVGExporterPathFloatToFixed(d, options.precision);
-        if (proposed != d) {
+        if(proposed != d) {
            CGFloat rounded = +IJSVGExporterPathFloatToFixed(d, options.precision - 1);
            data[i] = IJSVGExporterPathFloatToFixed(+fabs(rounded - d), options.precision + 1)
                    >= kIJSVGExporterPathInstructionErrorThreshold
@@ -228,22 +206,22 @@ void IJSVGExporterPathInstructionRoundData(CGFloat* data, NSInteger length,
        char instructionChar = instruction.instruction;
        NSInteger length = instruction.dataLength;
        CGFloat* data = instruction.data;
-        if (strchr("mltqsc", instructionChar) != NULL) {
+        if(strchr("mltqsc", instructionChar) != NULL) {
            for (NSInteger i = length; i--;) {
                data[i] += instruction.base[i % 2] - relSubPoint[i % 2];
            }
-        } else if (instructionChar == 'h') {
+        } else if(instructionChar == 'h') {
            data[0] += instruction.base[0] - relSubPoint[0];
-        } else if (instructionChar == 'v') {
+        } else if(instructionChar == 'v') {
            data[0] += instruction.base[1] - relSubPoint[1];
-        } else if (instructionChar == 'a') {
+        } else if(instructionChar == 'a') {
            data[5] += instruction.base[0] - relSubPoint[0];
            data[5] += instruction.base[1] - relSubPoint[1];
        }
        IJSVGExporterPathInstructionRoundData(data, length, floatingPointOptions);
-        if (instructionChar == 'h') {
+        if(instructionChar == 'h') {
            relSubPoint[0] += data[0];
-        } else if (instructionChar == 'v') {
+        } else if(instructionChar == 'v') {
            relSubPoint[1] += data[0];
        } else {
            relSubPoint[0] += data[length - 2];
@@ -258,7 +236,7 @@ void IJSVGExporterPathInstructionRoundData(CGFloat* data, NSInteger length,
 {
    IJSVGExporterPathInstruction* prevInstruction = nil;
    for (IJSVGExporterPathInstruction* instruction in instructions) {
-        if (prevInstruction == nil || instruction.dataLength == 0) {
+        if(prevInstruction == nil || instruction.dataLength == 0) {
            prevInstruction = instruction;
            continue;
        }
@@ -269,15 +247,15 @@ void IJSVGExporterPathInstructionRoundData(CGFloat* data, NSInteger length,
        CGFloat* adata = (CGFloat*)malloc(sizeof(CGFloat) * length);
        memcpy(adata, data, sizeof(CGFloat) * length);

-        if (strchr("mltqsc", instructionChar) != NULL) {
+        if(strchr("mltqsc", instructionChar) != NULL) {
            for (NSInteger i = length; i--;) {
                adata[i] += instruction.base[i % 2];
            }
-        } else if (instructionChar == 'h') {
+        } else if(instructionChar == 'h') {
            adata[0] += instruction.base[0];
-        } else if (instructionChar == 'v') {
+        } else if(instructionChar == 'v') {
            adata[0] += instruction.base[1];
-        } else if (instructionChar == 'a') {
+        } else if(instructionChar == 'a') {
            adata[5] += instruction.base[0];
            adata[6] += instruction.base[1];
        }
@@ -285,8 +263,8 @@ void IJSVGExporterPathInstructionRoundData(CGFloat* data, NSInteger length,
        IJSVGExporterPathInstructionRoundData(adata, length, floatingPointOptions);

        IJSVGExporterPathInstruction* ainstruction = nil;
-        ainstruction = [[[IJSVGExporterPathInstruction alloc] initWithInstruction:instructionChar
-                                                                        dataCount:length] autorelease];
+        ainstruction = [[IJSVGExporterPathInstruction alloc] initWithInstruction:instructionChar
+                                                                        dataCount:length];
        memcpy(ainstruction.data, adata, sizeof(CGFloat) * length);

        // run these through our default string runner
@@ -296,7 +274,11 @@ void IJSVGExporterPathInstructionRoundData(CGFloat* data, NSInteger length,
        NSString* comp = [self pathStringFromInstructions:@[ ainstruction ]
                                     floatingPointOptions:floatingPointOptions];

-        if (comp.length < orig.length && !(instructionChar == prevInstruction.instruction && prevInstruction.instruction > 96 && comp.length == orig.length - 1 && data[0] < 0.f && fmod(prevInstruction.data[prevInstruction.dataLength - 1], 1) != 0.f)) {
+        if(comp.length < orig.length && !(instructionChar == prevInstruction.instruction &&
+                                           prevInstruction.instruction > 96 &&
+                                           comp.length == orig.length - 1 &&
+                                           data[0] < 0.f &&
+                                           fmod(prevInstruction.data[prevInstruction.dataLength - 1], 1) != 0.f)) {
            instruction.instruction = toupper(instructionChar);
            memcpy(data, adata, sizeof(CGFloat) * length);
        }
@@ -319,39 +301,45 @@ void IJSVGExporterPathInstructionRoundData(CGFloat* data, NSInteger length,
                                                floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions
 {
    NSMutableArray<IJSVGExporterPathInstruction*>* nInstructions = nil;
-    nInstructions = [[[NSMutableArray alloc] initWithCapacity:instructions.count] autorelease];
+    nInstructions = [[NSMutableArray alloc] initWithCapacity:instructions.count];
    IJSVGExporterPathInstruction* lastInstruction = nil;
    for (IJSVGExporterPathInstruction* instruction in instructions) {
        lastInstruction = nInstructions.lastObject;
-        if (lastInstruction == nil) {
+        if(lastInstruction == nil) {
            [nInstructions addObject:instruction];
            continue;
        }
-        if (instruction.instruction == 'c') {
-            if (lastInstruction.instruction == 'c' && instruction.data[0] == -(lastInstruction.data[2] - lastInstruction.data[4]) && instruction.data[1] == -(lastInstruction.data[3] - lastInstruction.data[5])) {
+        if(instruction.instruction == 'c') {
+            if(lastInstruction.instruction == 'c' &&
+                instruction.data[0] == -(lastInstruction.data[2] - lastInstruction.data[4]) &&
+                instruction.data[1] == -(lastInstruction.data[3] - lastInstruction.data[5])) {
                IJSVGExporterPathInstruction* nInstruction = nil;
-                nInstruction = [[[IJSVGExporterPathInstruction alloc] initWithInstruction:'s'
-                                                                                dataCount:4] autorelease];
+                nInstruction = [[IJSVGExporterPathInstruction alloc] initWithInstruction:'s'
+                                                                                dataCount:4];
                nInstruction.data[0] = instruction.data[2];
                nInstruction.data[1] = instruction.data[3];
                nInstruction.data[2] = instruction.data[4];
                nInstruction.data[3] = instruction.data[5];
                [nInstructions addObject:nInstruction];
                continue;
-            } else if (lastInstruction.instruction == 's' && instruction.data[0] == -(lastInstruction.data[0] - lastInstruction.data[2]) && instruction.data[1] == -(lastInstruction.data[1] - lastInstruction.data[3])) {
+            } else if(lastInstruction.instruction == 's' &&
+                       instruction.data[0] == -(lastInstruction.data[0] - lastInstruction.data[2]) &&
+                       instruction.data[1] == -(lastInstruction.data[1] - lastInstruction.data[3])) {
                IJSVGExporterPathInstruction* nInstruction = nil;
-                nInstruction = [[[IJSVGExporterPathInstruction alloc] initWithInstruction:'s'
-                                                                                dataCount:4] autorelease];
+                nInstruction = [[IJSVGExporterPathInstruction alloc] initWithInstruction:'s'
+                                                                                dataCount:4];
                nInstruction.data[0] = instruction.data[2];
                nInstruction.data[1] = instruction.data[3];
                nInstruction.data[2] = instruction.data[4];
                nInstruction.data[3] = instruction.data[5];
                [nInstructions addObject:nInstruction];
                continue;
-            } else if (lastInstruction.instruction != 'c' && lastInstruction.instruction != 's' && instruction.data[0] == 0.f && instruction.data[1] == 0.f) {
+            } else if(lastInstruction.instruction != 'c' &&
+                       lastInstruction.instruction != 's' &&
+                       instruction.data[0] == 0.f && instruction.data[1] == 0.f) {
                IJSVGExporterPathInstruction* nInstruction = nil;
-                nInstruction = [[[IJSVGExporterPathInstruction alloc] initWithInstruction:'s'
-                                                                                dataCount:4] autorelease];
+                nInstruction = [[IJSVGExporterPathInstruction alloc] initWithInstruction:'s'
+                                                                                dataCount:4];
                nInstruction.data[0] = instruction.data[2];
                nInstruction.data[1] = instruction.data[3];
                nInstruction.data[2] = instruction.data[4];
@@ -359,19 +347,23 @@ void IJSVGExporterPathInstructionRoundData(CGFloat* data, NSInteger length,
                [nInstructions addObject:nInstruction];
                continue;
            }
-        } else if (instruction.instruction == 'q') {
-            if (lastInstruction.instruction == 'q' && instruction.data[0] == (lastInstruction.data[2] - lastInstruction.data[0]) && instruction.data[1] == (lastInstruction.data[3] - lastInstruction.data[1])) {
+        } else if(instruction.instruction == 'q') {
+            if(lastInstruction.instruction == 'q' &&
+                instruction.data[0] == (lastInstruction.data[2] - lastInstruction.data[0]) &&
+                instruction.data[1] == (lastInstruction.data[3] - lastInstruction.data[1])) {
                IJSVGExporterPathInstruction* nInstruction = nil;
-                nInstruction = [[[IJSVGExporterPathInstruction alloc] initWithInstruction:'t'
-                                                                                dataCount:2] autorelease];
+                nInstruction = [[IJSVGExporterPathInstruction alloc] initWithInstruction:'t'
+                                                                                dataCount:2];
                nInstruction.data[0] = instruction.data[2];
                nInstruction.data[1] = instruction.data[3];
                [nInstructions addObject:nInstruction];
                continue;
-            } else if (lastInstruction.instruction == 't' && instruction.data[2] == lastInstruction.data[0] && instruction.data[3] == lastInstruction.data[1]) {
+            } else if(lastInstruction.instruction == 't' &&
+                       instruction.data[2] == lastInstruction.data[0] &&
+                       instruction.data[3] == lastInstruction.data[1]) {
                IJSVGExporterPathInstruction* nInstruction = nil;
-                nInstruction = [[[IJSVGExporterPathInstruction alloc] initWithInstruction:'t'
-                                                                                dataCount:2] autorelease];
+                nInstruction = [[IJSVGExporterPathInstruction alloc] initWithInstruction:'t'
+                                                                                dataCount:2];
                nInstruction.data[0] = instruction.data[2];
                nInstruction.data[1] = instruction.data[3];
                [nInstructions addObject:nInstruction];
@@ -386,128 +378,159 @@ void IJSVGExporterPathInstructionRoundData(CGFloat* data, NSInteger length,
 + (void)convertInstructionsToRelativeCoordinates:(NSArray<IJSVGExporterPathInstruction*>*)instructions
                            floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions
 {
-    CGFloat point[2] = { 0, 0 };
-    CGFloat subpathPoint[2] = { 0, 0 };
-    IJSVGExporterPathInstruction* baseInstruction = nil;
-    IJSVGExporterPathInstruction* prevInstruction = nil;
+    CGFloat start[2] = {0, 0};
+    CGFloat cursor[2] = {0, 0};
+    CGFloat prevCoords[2] = {0, 0};

    NSInteger index = 0;
    for (IJSVGExporterPathInstruction* anInstruction in instructions) {
        char instruction = anInstruction.instruction;
        CGFloat* data = anInstruction.data;
-        NSInteger length = anInstruction.dataLength;
-
-        if (data != NULL) {
-
-            // already relative
-            if (instruction == 'm' || instruction == 'c' || instruction == 's' || instruction == 'l' || instruction == 'q' || instruction == 't' || instruction == 'a') {
-
-                point[0] += data[length - 2];
-                point[1] += data[length - 1];
-
-                if (instruction == 'm') {
-                    subpathPoint[0] = point[0];
-                    subpathPoint[1] = point[1];
-
-                    baseInstruction = anInstruction;
-                }
-
-            } else if (instruction == 'h') {
-                point[0] += data[0];
-            } else if (instruction == 'v') {
-                point[1] += data[0];
+        CGFloat* base = anInstruction.base;
+        CGFloat* coords = anInstruction.coords;
+        
+        switch(instruction) {
+            case 'm': {
+                cursor[0] += data[0];
+                cursor[1] += data[1];
+                start[0] = cursor[0];
+                start[1] = cursor[1];
+                break;
            }
-
-            // convert absolute to relative
-            if (instruction == 'M') {
-                if (index > 0) {
+            case 'M': {
+                if(index != 0) {
                    instruction = 'm';
                }
-
-                data[0] -= point[0];
-                data[1] -= point[1];
-
-                subpathPoint[0] = point[0] += data[0];
-                subpathPoint[1] = point[1] += data[1];
-
-                baseInstruction = anInstruction;
-            } else if (instruction == 'L' || instruction == 'T') {
-                instruction = tolower(instruction);
-
-                data[0] -= point[0];
-                data[1] -= point[1];
-
-                point[0] += data[0];
-                point[1] += data[1];
-            } else if (instruction == 'C') {
-                instruction = 'c';
-
-                data[0] -= point[0];
-                data[1] -= point[1];
-                data[2] -= point[0];
-                data[3] -= point[1];
-                data[4] -= point[0];
-                data[5] -= point[1];
-
-                point[0] += data[4];
-                point[1] += data[5];
-            } else if (instruction == 'S' || instruction == 'Q') {
-                instruction = tolower(instruction);
-
-                data[0] -= point[0];
-                data[1] -= point[1];
-                data[2] -= point[0];
-                data[3] -= point[1];
-
-                point[0] += data[2];
-                point[1] += data[3];
-            } else if (instruction == 'A') {
-                instruction = 'a';
-
-                data[5] -= point[0];
-                data[6] -= point[1];
-
-                point[0] += data[5];
-                point[1] += data[6];
-            } else if (instruction == 'H') {
+                data[0] -= cursor[0];
+                data[1] -= cursor[1];
+                cursor[0] += data[0];
+                cursor[1] += data[1];
+                start[0] = cursor[0];
+                start[1] = cursor[1];
+                break;
+            }
+            case 'l': {
+                cursor[0] += data[0];
+                cursor[1] += data[1];
+                break;
+            }
+            case 'L': {
+                instruction = 'l';
+                data[0] -= cursor[0];
+                data[1] -= cursor[1];
+                cursor[0] += data[0];
+                cursor[1] += data[1];
+                break;
+            }
+            case 'h': {
+                cursor[0] += data[0];
+                break;
+            }
+            case 'H': {
                instruction = 'h';
-
-                data[0] -= point[0];
-                point[0] += data[0];
-            } else if (instruction == 'V') {
+                data[0] -= cursor[0];
+                cursor[0] += data[0];
+                break;
+            }
+            case 'v': {
+                cursor[1] += data[0];
+                break;
+            }
+            case 'V': {
                instruction = 'v';
-
-                data[0] -= point[1];
-                point[1] += data[0];
+                data[0] -= cursor[1];
+                cursor[1] += data[0];
+                break;
            }
-
-            // reset the instruction
-            anInstruction.instruction = instruction;
-            CGFloat* coords = anInstruction.coords;
-            coords[0] = point[0];
-            coords[1] = point[1];
-
-        } else if (instruction == 'Z' || instruction == 'z') {
-            if (baseInstruction != nil) {
-                CGFloat* coords = anInstruction.coords;
-                coords[0] = baseInstruction.coords[0];
-                coords[1] = baseInstruction.coords[1];
+            case 'c': {
+                cursor[0] += data[4];
+                cursor[1] += data[5];
+                break;
+            }
+            case 'C': {
+                instruction = 'c';
+                data[0] -= cursor[0];
+                data[1] -= cursor[1];
+                data[2] -= cursor[0];
+                data[3] -= cursor[1];
+                data[4] -= cursor[0];
+                data[5] -= cursor[1];
+                cursor[0] += data[4];
+                cursor[1] += data[5];
+                break;
+            }
+            case 's': {
+                cursor[0] += data[2];
+                cursor[1] += data[3];
+                break;
+            }
+            case 'S': {
+                instruction = 's';
+                data[0] -= cursor[0];
+                data[1] -= cursor[1];
+                data[2] -= cursor[0];
+                data[3] -= cursor[1];
+                cursor[0] += data[2];
+                cursor[1] += data[3];
+                break;
+            }
+            case 'q': {
+                cursor[0] += data[2];
+                cursor[1] += data[3];
+                break;
+            }
+            case 'Q': {
+                instruction = 'q';
+                data[0] -= cursor[0];
+                data[1] -= cursor[1];
+                data[2] -= cursor[0];
+                data[3] -= cursor[1];
+                cursor[0] += data[2];
+                cursor[1] += data[3];
+                break;
+            }
+            case 't': {
+                cursor[0] += data[0];
+                cursor[1] += data[1];
+                break;
+            }
+            case 'T': {
+                instruction = 't';
+                data[0] -= cursor[0];
+                data[1] -= cursor[1];
+                cursor[0] += data[0];
+                cursor[1] += data[1];
+                break;
+            }
+            case 'a': {
+                cursor[0] += data[5];
+                cursor[1] += data[6];
+                break;
+            }
+            case 'A': {
+                instruction = 'a';
+                data[5] -= cursor[0];
+                data[6] -= cursor[1];
+                cursor[0] += data[5];
+                cursor[1] += data[6];
+                break;
+            }
+            case 'Z':
+            case 'z': {
+                cursor[0] = start[0];
+                cursor[1] = start[1];
+                break;
            }
-            point[0] = subpathPoint[0];
-            point[1] = subpathPoint[1];
        }

-        CGFloat* base = anInstruction.base;
-        if (prevInstruction != nil) {
-            base[0] = prevInstruction.coords[0];
-            base[1] = prevInstruction.coords[1];
-        } else {
-            base[0] = 0.f;
-            base[1] = 0.f;
-        }
-
-        // increment index
-        prevInstruction = anInstruction;
+        // set the instruction back
+        anInstruction.instruction = instruction;
+        base[0] = prevCoords[0];
+        base[1] = prevCoords[1];
+        coords[0] = cursor[0];
+        coords[1] = cursor[1];
+        prevCoords[0] = cursor[0];
+        prevCoords[1] = cursor[1];
        index++;
    }
 }
@@ -518,7 +541,7 @@ void IJSVGExporterPathInstructionRoundData(CGFloat* data, NSInteger length,

    // keep track of the current point
    __block CGPoint currentPoint = CGPointZero;
-    NSMutableArray* instructions = [[[NSMutableArray alloc] init] autorelease];
+    NSMutableArray* instructions = [[NSMutableArray alloc] init];

    // create the path callback
    IJSVGCGPathHandler callback = ^(const CGPathElement* pathElement) {
@@ -528,8 +551,8 @@ void IJSVGExporterPathInstructionRoundData(CGFloat* data, NSInteger length,

        case kCGPathElementMoveToPoint: {
            // move to command
-            instruction = [[[IJSVGExporterPathInstruction alloc] initWithInstruction:'M'
-                                                                           dataCount:2] autorelease];
+            instruction = [[IJSVGExporterPathInstruction alloc] initWithInstruction:'M'
+                                                                           dataCount:2];
            CGPoint point = pathElement->points[0];
            instruction.data[0] = point.x;
            instruction.data[1] = point.y;
@@ -542,17 +565,17 @@ void IJSVGExporterPathInstructionRoundData(CGFloat* data, NSInteger length,
        case kCGPathElementAddLineToPoint: {
            // line to command
            CGPoint point = pathElement->points[0];
-            if (point.x == currentPoint.x) {
-                instruction = [[[IJSVGExporterPathInstruction alloc] initWithInstruction:'V'
-                                                                               dataCount:1] autorelease];
+            if(point.x == currentPoint.x) {
+                instruction = [[IJSVGExporterPathInstruction alloc] initWithInstruction:'V'
+                                                                               dataCount:1];
                instruction.data[0] = point.y;
-            } else if (point.y == currentPoint.y) {
-                instruction = [[[IJSVGExporterPathInstruction alloc] initWithInstruction:'H'
-                                                                               dataCount:1] autorelease];
+            } else if(point.y == currentPoint.y) {
+                instruction = [[IJSVGExporterPathInstruction alloc] initWithInstruction:'H'
+                                                                               dataCount:1];
                instruction.data[0] = point.x;
            } else {
-                instruction = [[[IJSVGExporterPathInstruction alloc] initWithInstruction:'L'
-                                                                               dataCount:2] autorelease];
+                instruction = [[IJSVGExporterPathInstruction alloc] initWithInstruction:'L'
+                                                                               dataCount:2];
                instruction.data[0] = point.x;
                instruction.data[1] = point.y;
            }
@@ -566,8 +589,8 @@ void IJSVGExporterPathInstructionRoundData(CGFloat* data, NSInteger length,
            // quad curve to command
            CGPoint controlPoint = pathElement->points[0];
            CGPoint point = pathElement->points[1];
-            instruction = [[[IJSVGExporterPathInstruction alloc] initWithInstruction:'Q'
-                                                                           dataCount:4] autorelease];
+            instruction = [[IJSVGExporterPathInstruction alloc] initWithInstruction:'Q'
+                                                                           dataCount:4];
            instruction.data[0] = controlPoint.x;
            instruction.data[1] = controlPoint.y;
            instruction.data[2] = point.x;
@@ -585,8 +608,8 @@ void IJSVGExporterPathInstructionRoundData(CGFloat* data, NSInteger length,
            CGPoint point = pathElement->points[2];

            currentPoint = point;
-            instruction = [[[IJSVGExporterPathInstruction alloc] initWithInstruction:'C'
-                                                                           dataCount:6] autorelease];
+            instruction = [[IJSVGExporterPathInstruction alloc] initWithInstruction:'C'
+                                                                           dataCount:6];
            instruction.data[0] = controlPoint1.x;
            instruction.data[1] = controlPoint1.y;
            instruction.data[2] = controlPoint2.x;
@@ -600,8 +623,8 @@ void IJSVGExporterPathInstructionRoundData(CGFloat* data, NSInteger length,

        case kCGPathElementCloseSubpath: {
            // close command
-            instruction = [[[IJSVGExporterPathInstruction alloc] initWithInstruction:'Z'
-                                                                           dataCount:0] autorelease];
+            instruction = [[IJSVGExporterPathInstruction alloc] initWithInstruction:'Z'
+                                                                           dataCount:0];
            [instructions addObject:instruction];
            break;
        }
@@ -613,11 +636,11 @@ void IJSVGExporterPathInstructionRoundData(CGFloat* data, NSInteger length,

    // remove last instruction if it was Z -> M
    IJSVGExporterPathInstruction* lastInstruction = instructions.lastObject;
-    if (lastInstruction.instruction == 'M' || lastInstruction.instruction == 'm') {
-        if (instructions.count >= 2) {
+    if(lastInstruction.instruction == 'M' || lastInstruction.instruction == 'm') {
+        if(instructions.count >= 2) {
            NSInteger index = [instructions indexOfObject:lastInstruction] - 1;
            IJSVGExporterPathInstruction* prevInstruction = instructions[index];
-            if (prevInstruction.instruction == 'z' || prevInstruction.instruction == 'Z') {
+            if(prevInstruction.instruction == 'z' || prevInstruction.instruction == 'Z') {
                [instructions removeLastObject];
            }
        }
@@ -0,0 +1,14 @@
+//
+//  IJSVGBasicLayer.h
+//  IJSVG
+//
+//  Created by Curtis Hard on 19/04/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import <QuartzCore/QuartzCore.h>
+#import <IJSVG/IJSVGLayer.h>
+
+@interface IJSVGBasicLayer : CALayer <IJSVGBasicLayer>
+
+@end
@@ -0,0 +1,30 @@
+//
+//  IJSVGBasicLayer.m
+//  IJSVG
+//
+//  Created by Curtis Hard on 19/04/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import <IJSVG/IJSVGBasicLayer.h>
+
+@implementation IJSVGBasicLayer
+
+@synthesize backingScaleFactor;
+@synthesize requiresBackingScale;
+@synthesize renderQuality;
+@synthesize debugLayers;
+
+- (id<CAAction>)actionForKey:(NSString*)event
+{
+    return nil;
+}
+
+
+- (void)performRenderInContext:(CGContextRef)ctx
+{
+}
+
+
+
+@end
@@ -0,0 +1,23 @@
+//
+//  IJSVGFilterLayer.h
+//  IJSVG
+//
+//  Created by Curtis Hard on 19/04/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import <IJSVG/IJSVGLayer.h>
+#import <IJSVG/IJSVGFilter.h>
+#import <IJSVG/IJSVGBasicLayer.h>
+
+@interface IJSVGFilterLayer : IJSVGLayer {
+    
+@private
+    IJSVGBasicLayer* _hostingLayer;
+    CGImageRef _image;
+    
+}
+
+@property (nonatomic, strong) CALayer<IJSVGDrawableLayer>* sublayer;
+
+@end
@@ -0,0 +1,73 @@
+//
+//  IJSVGFilterLayer.m
+//  IJSVG
+//
+//  Created by Curtis Hard on 19/04/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import <IJSVG/IJSVGFilterLayer.h>
+#import <IJSVG/IJSVGTransform.h>
+
+@implementation IJSVGFilterLayer
+
+- (void)dealloc
+{
+    (void)CGImageRelease(_image), _image = nil;
+}
+
+- (instancetype)init
+{
+    if((self = [super init]) != nil) {
+        _hostingLayer = [IJSVGBasicLayer layer];
+        [self addSublayer:_hostingLayer];
+    }
+    return self;
+}
+
+- (BOOL)requiresBackingScale
+{
+    return YES;
+}
+
+- (void)setBackingScaleFactor:(CGFloat)backingScaleFactor
+{
+    // we are responsible for recursively calling the sublayer
+    // with the new backing scale factor
+    [IJSVGLayer setBackingScaleFactor:backingScaleFactor
+                        renderQuality:self.renderQuality
+                   recursivelyToLayer:_sublayer];
+    
+    BOOL needsChange = self.backingScaleFactor != backingScaleFactor;
+    [super setBackingScaleFactor:backingScaleFactor];
+    if(needsChange == YES) {
+        [self updateImage];
+    }
+}
+
+- (void)updateImage
+{
+    if(_image != nil) {
+        (void)CGImageRelease(_image), _image = nil;
+    }
+    _image = [self.filter newImageByApplyFilterToLayer:_sublayer
+                                                 scale:1.f];
+}
+
+- (void)layoutSublayers
+{
+    CGFloat width = CGImageGetWidth(_image);
+    CGFloat height = CGImageGetHeight(_image);
+    CGRect frame = _sublayer.innerBoundingBox;
+    _hostingLayer.frame = CGRectMake(frame.origin.x + (frame.size.width / 2.f - width / 2.f),
+                                     frame.origin.y + (frame.size.height / 2.f - height / 2.f),
+                                     width, height);
+    _hostingLayer.contents = (__bridge id)_image;
+}
+
+- (NSArray<CALayer<IJSVGBasicLayer>*>*)debugLayers
+{
+    return @[_sublayer];
+}
+
+@end
@@ -14,7 +14,7 @@
@interface IJSVGGradientLayer : IJSVGLayer {
 }

-@property (nonatomic, retain) IJSVGGradient* gradient;
+@property (nonatomic, strong) IJSVGGradient* gradient;
@property (nonatomic, assign) CGRect viewBox;

@end
@@ -6,38 +6,24 @@
 //  Copyright © 2016 Curtis Hard. All rights reserved.
 //

-#import "IJSVGGradientLayer.h"
+#import <IJSVG/IJSVGGradientLayer.h>
 #import <IJSVG/IJSVGRootLayer.h>

@implementation IJSVGGradientLayer

- (void)dealloc
-{
-    (void)([_gradient release]), _gradient = nil;
-    [super dealloc];
-}
-
- (BOOL)requiresBackingScaleHelp
+- (BOOL)requiresBackingScale
 {
    return YES;
 }

 - (void)setGradient:(IJSVGGradient*)newGradient
 {
-    if (_gradient != nil) {
-        (void)([_gradient release]), _gradient = nil;
-    }
-    _gradient = [newGradient retain];
+    _gradient = newGradient;

    // lets check its alpha properties on the colors
    BOOL hasAlphaChannel = NO;
-    NSInteger stops = _gradient.gradient.numberOfColorStops;
-    for (NSInteger i = 0; i < stops; i++) {
-        NSColor* color = nil;
-        [_gradient.gradient getColor:&color
-                           location:NULL
-                            atIndex:i];
-        if (color.alphaComponent != 1.f) {
+    for (NSColor* color in newGradient.colors) {
+        if(color.alphaComponent != 1.f) {
            hasAlphaChannel = YES;
            break;
        }
@@ -47,7 +33,7 @@

 - (void)setOpacity:(float)opacity
 {
-    if (opacity != 1.f) {
+    if(opacity != 1.f) {
        self.opaque = NO;
    }
    [super setOpacity:opacity];
@@ -56,17 +42,17 @@
 - (void)setBackingScaleFactor:(CGFloat)backingScaleFactor
 {
    switch (self.renderQuality) {
-    case kIJSVGRenderQualityOptimized: {
-        backingScaleFactor = (backingScaleFactor * .35f);
-        break;
-    }
-    case kIJSVGRenderQualityLow: {
-        backingScaleFactor = (backingScaleFactor * .05f);
-        break;
-    }
-    default: {
-        break;
-    }
+        case kIJSVGRenderQualityOptimized: {
+            backingScaleFactor = (backingScaleFactor * .35f);
+            break;
+        }
+        case kIJSVGRenderQualityLow: {
+            backingScaleFactor = (backingScaleFactor * .05f);
+            break;
+        }
+        default: {
+            break;
+        }
    }
    [super setBackingScaleFactor:backingScaleFactor];
 }
@@ -81,28 +67,41 @@
    [super drawInContext:ctx];

    // nothing to do :(
-    if (self.gradient == nil) {
+    if(self.gradient == nil) {
        return;
    }

-    // draw the gradient
+    // perform the draw
+    CGRect bounds = CGRectZero;
+    CGAffineTransform transform = CGAffineTransformIdentity;
    CALayer<IJSVGDrawableLayer>* layer = (CALayer<IJSVGDrawableLayer>*)self.referencingLayer;
-    CGRect objectRect = layer.boundingBox;
-    CGRect objectFrame = layer.frame;
-    CGAffineTransform affine = [IJSVGLayer absoluteTransformForLayer:layer];
-    affine = CGAffineTransformTranslate(affine,
-                                        -CGRectGetMinX(objectFrame),
-                                        -CGRectGetMinY(objectFrame));
-    CGContextSaveGState(ctx);
+    if(self.gradient.units == IJSVGUnitUserSpaceOnUse) {
+        IJSVGRootLayer* rootNode = (IJSVGRootLayer*)[IJSVGLayer rootLayerForLayer:self];
+        bounds = [rootNode.viewBox computeValue:CGSizeZero];
+        transform = [IJSVGLayer userSpaceTransformForLayer:layer];
+    } else {
+        bounds = IJSVGLayerGetBoundingBoxBounds(layer);
+    }
    
-    IJSVGRootLayer* rootNode = (IJSVGRootLayer*)[IJSVGLayer rootLayerForLayer:self];
-    CGRect bounds = [rootNode.viewBox computeValue:CGSizeZero];
+    // its possible that this layer is shifted inwards due to a stroke on the
+    // parent layer
+    transform = CGAffineTransformConcat(transform, [IJSVGLayer userSpaceTransformForLayer:self]);
    
    [self.gradient drawInContextRef:ctx
-                         objectRect:objectRect
-                  absoluteTransform:affine
-                           viewPort:bounds];
-    CGContextRestoreGState(ctx);
+                             bounds:bounds
+                          transform:transform];
+}
+
+- (IJSVGTraitedColorStorage*)colors
+{
+    IJSVGTraitedColorStorage* list = [[IJSVGTraitedColorStorage alloc] init];
+    for(NSColor* color in self.gradient.colors) {
+        IJSVGTraitedColor* traited = nil;
+        traited = [IJSVGTraitedColor colorWithColor:color
+                                             traits:IJSVGColorUsageTraitNone];
+        [list addColor:traited];
+    }
+    return list;
 }

@end
@@ -8,13 +8,15 @@

 #import <IJSVG/IJSVGLayer.h>
 #import <IJSVG/IJSVGShapeLayer.h>
+#import <IJSVG/IJSVGUnitRect.h>
 #import <QuartzCore/QuartzCore.h>

-@interface IJSVGGroupLayer : IJSVGLayer {
+@interface IJSVGGroupLayer : IJSVGLayer <IJSVGMaskingLayer> {
    
 }

-@property (nonatomic, retain) IJSVGUnitRect* viewBox;
+@property (nonatomic, strong) IJSVGUnitSize* intrinsicSize;
+@property (nonatomic, strong) IJSVGUnitRect* viewBox;
@property (nonatomic, assign) IJSVGViewBoxAlignment viewBoxAlignment;
@property (nonatomic, assign) IJSVGViewBoxMeetOrSlice viewBoxMeetOrSlice;

@@ -6,17 +6,16 @@
 //  Copyright © 2017 Curtis Hard. All rights reserved.
 //

-#import "IJSVGGroupLayer.h"
-#import "IJSVGViewBox.h"
-#import "IJSVGUnitRect.h"
-#import "IJSVGLayer.h"
+#import <IJSVG/IJSVGGroupLayer.h>
+#import <IJSVG/IJSVGViewBox.h>
+#import <IJSVG/IJSVGUnitRect.h>
+#import <IJSVG/IJSVGLayer.h>

@implementation IJSVGGroupLayer

- (void)dealloc
+- (CGRect)innerBoundingBox
 {
-    (void)[_viewBox release], _viewBox = nil;
-    [super dealloc];
+    return self.outerBoundingBox;
 }

@end
@@ -9,16 +9,15 @@
 #import <IJSVG/IJSVGLayer.h>
 #import <IJSVG/IJSVGImage.h>
 #import <IJSVG/IJSVGTransformLayer.h>
+#import <IJSVG/IJSVGTileLayer.h>
+#import <IJSVG/IJSVGBasicLayer.h>
 #import <AppKit/AppKit.h>
 #import <QuartzCore/QuartzCore.h>

-@interface IJSVGImageLayer : IJSVGLayer {
-    
-@private
-    IJSVGLayer* _imageLayer;
+@interface IJSVGImageLayer : IJSVGTileLayer {
 }

-@property (nonatomic, retain) IJSVGImage* image;
+@property (nonatomic, strong) IJSVGImage* image;

 - (id)initWithImage:(IJSVGImage*)image;

@@ -6,48 +6,43 @@
 //  Copyright © 2017 Curtis Hard. All rights reserved.
 //

-#import "IJSVGImageLayer.h"
+#import <IJSVG/IJSVGImageLayer.h>

@implementation IJSVGImageLayer

- (void)dealloc
-{
-    (void)[_image release], _image = nil;
-    (void)[_imageLayer release], _imageLayer = nil;
-    [super dealloc];
-}
-
 - (id)initWithImage:(IJSVGImage*)image
 {
    if((self = [super init]) != nil) {
-        _image = image.retain;
+        self.image = image;
    }
    return self;
 }

- (BOOL)requiresBackingScaleHelp
+- (BOOL)requiresBackingScale
 {
    return YES;
 }

- (void)layoutSublayers
+- (void)setImage:(IJSVGImage *)image
 {
-    [super layoutSublayers];
-    [self reloadContent];
+    _image = image;
    [self setNeedsDisplay];
 }

- (void)reloadContent
+- (void)drawInContext:(CGContextRef)ctx
 {
-    if(_imageLayer == nil) {
-        _imageLayer = [IJSVGLayer layer].retain;
-        _imageLayer.contentsGravity = kCAGravityResize;
-        _imageLayer.affineTransform = CGAffineTransformMakeScale(1.f, -1.f);
-        _imageLayer.contents = (id)_image.CGImage;
-        [self addSublayer:_imageLayer];
-    }
-
-    _imageLayer.frame = self.bounds;
+    CGImageRef image = _image.CGImage;
+    CGRect imageDrawRect = _image.bounds;
+    CGRect currentBounds = self.bounds;
+    IJSVGViewBoxDrawingBlock drawBlock = ^(CGFloat scale[]) {
+        // image will be upside down, so just translate it back on itself
+        CGContextConcatCTM(ctx, CGAffineTransformMakeScale(1.f, -1.f));
+        CGContextTranslateCTM(ctx, 0.f, -CGRectGetHeight(imageDrawRect));
+        CGContextDrawImage(ctx, imageDrawRect, image);
+    };
+    IJSVGContextDrawViewBox(ctx, imageDrawRect, currentBounds,
+                            _image.viewBoxAlignment,
+                            _image.viewBoxMeetOrSlice, drawBlock);
 }

@end
@@ -16,6 +16,19 @@
@class IJSVGStrokeLayer;
@class IJSVGGroupLayer;
@class IJSVGLayer;
+@class IJSVGFilter;
+@class IJSVGTraitedColorStorage;
+
+typedef NS_OPTIONS(NSUInteger, IJSVGLayerTraits) {
+    IJSVGLayerTraitNone = 0,
+    IJSVGLayerTraitFilled = 1 << 1,
+    IJSVGLayerTraitStroked = 1 << 2
+};
+
+typedef NS_OPTIONS(NSUInteger, IJSVGLayerDrawingOptions) {
+    IJSVGLayerDrawingOptionNone = 0,
+    IJSVGLayerDrawingOptionIgnoreClipping = 1 << 1
+};

 typedef NS_ENUM(NSUInteger, IJSVGLayerFillType) {
    IJSVGLayerFillTypeColor,
@@ -24,8 +37,14 @@ typedef NS_ENUM(NSUInteger, IJSVGLayerFillType) {
    IJSVGLayerFillTypeUnknown
 };

-typedef NS_OPTIONS(NSUInteger, IJSVGLayerTraits) {
-    IJSVGLayerTraitGroup
+typedef NS_ENUM(NSUInteger, IJSVGLayerUsageType) {
+    IJSVGLayerUsageTypeFillGeneric,
+    IJSVGLayerUsageTypeFillPattern,
+    IJSVGLayerUsageTypeFillGradient,
+    IJSVGLayerUsageTypeStrokeGeneric,
+    IJSVGLayerUsageTypeStrokePattern,
+    IJSVGLayerUsageTypeStrokeGradient,
+    IJSVGLayerUsageTypeStroke
 };

@protocol IJSVGPathableLayer <NSObject>
@@ -35,92 +54,126 @@ typedef NS_OPTIONS(NSUInteger, IJSVGLayerTraits) {

@end

-@protocol IJSVGDrawableLayer <NSObject>
+@protocol IJSVGBasicLayer <NSObject>

@required
-@property (nonatomic, assign) CGBlendMode blendingMode;
-@property (nonatomic, retain) CALayer<IJSVGDrawableLayer>* clipLayer;
-@property (nonatomic, retain) CALayer<IJSVGDrawableLayer>* maskLayer;
-@property (nonatomic, copy) CAShapeLayerFillRule clipRule;
-@property (nonatomic, copy) CAShapeLayerFillRule fillRule;
-@property (nonatomic, readonly) CGPoint absoluteOrigin;
-@property (nonatomic, assign) IJSVGRenderQuality renderQuality;
@property (nonatomic, assign) CGFloat backingScaleFactor;
-@property (nonatomic, readonly) BOOL requiresBackingScaleHelp;
-@property (nonatomic, readonly) CALayer<IJSVGDrawableLayer>* rootLayer;
-@property (nonatomic, readonly) CGRect absoluteFrame;
-@property (nonatomic, assign) CGRect boundingBox;
-@property (nonatomic, readonly) CGRect strokeBoundingBox;
-@property (nonatomic, readonly) CGRect boundingBoxBounds;
-@property (nonatomic, assign) CGRect outerBoundingBox;
-@property (nonatomic, assign) CALayer<IJSVGDrawableLayer>* referencingLayer;
-@property (nonatomic, readonly) NSArray<CALayer<IJSVGDrawableLayer>*>* debugLayers;
-
- (void)performRenderInContext:(CGContextRef)ctx;
+@property (nonatomic, readonly) BOOL requiresBackingScale;
+@property (nonatomic, assign) IJSVGRenderQuality renderQuality;
+@property (nonatomic, readonly) NSArray<CALayer<IJSVGBasicLayer>*>* debugLayers;

@end

-@interface IJSVGLayer : CALayer <IJSVGDrawableLayer> {
+@protocol IJSVGMaskingLayer <NSObject>
+
+@required
+@property (nonatomic, assign) CGRect maskingBoundingBox;
+@property (nonatomic, assign) CGRect maskingClippingRect;
+
+@end
+
+@protocol IJSVGClippingLayer <NSObject>
+
+@required
+@property (nonatomic, assign) CGRect clippingBoundingBox;
+@property (nonatomic, assign) CGAffineTransform clippingTransform;
+@property (nonatomic, assign) CGPathRef clipPath;
+@property (nonatomic, assign) CGAffineTransform clipPathTransform;
+
+@end
+
+@protocol IJSVGDrawableLayer <NSObject, IJSVGBasicLayer, IJSVGMaskingLayer, IJSVGClippingLayer>
+
+@required
+@property (nonatomic, readonly) BOOL treatImplicitOriginAsTransform;
+@property (nonatomic, assign) CGBlendMode blendingMode;
+@property (nonatomic, strong) NSArray<CALayer<IJSVGDrawableLayer>*>* clipLayers;
+@property (nonatomic, strong) CALayer<IJSVGDrawableLayer>* maskLayer;
+@property (nonatomic, copy) CAShapeLayerFillRule clipRule;
+@property (nonatomic, copy) CAShapeLayerFillRule fillRule;
+@property (nonatomic, readonly) CGPoint absoluteOrigin;
+@property (nonatomic, readonly) CGRect absoluteFrame;
+@property (nonatomic, assign) CGRect boundingBox;
+@property (nonatomic, assign) CGRect outerBoundingBox;
+@property (nonatomic, readonly) CGRect innerBoundingBox;
+@property (nonatomic, weak) CALayer<IJSVGDrawableLayer>* referencingLayer;
+@property (nonatomic, strong) IJSVGFilter* filter;
+@property (nonatomic, readonly) IJSVGLayerTraits layerTraits;
+@property (nonatomic, readonly) NSMapTable<NSNumber*, CALayer<IJSVGDrawableLayer>*>* layerUsageMapTable;
+@property (nonatomic, readonly) IJSVGTraitedColorStorage* colors;
+
+- (void)performRenderInContext:(CGContextRef)ctx;
+
+- (void)setLayer:(CALayer<IJSVGDrawableLayer>*)layer
+    forUsageType:(IJSVGLayerUsageType)type;
+- (CALayer<IJSVGDrawableLayer>*)layerForUsageType:(IJSVGLayerUsageType)type;
+- (CALayer<IJSVGDrawableLayer>*)strokeLayer:(IJSVGLayerUsageType*)usageType;
+
+- (void)addTraits:(IJSVGLayerTraits)traits;
+- (void)removeTraits:(IJSVGLayerTraits)traits;
+- (BOOL)matchesTraits:(IJSVGLayerTraits)traits;
+
+- (CALayer<IJSVGDrawableLayer>*)firstSublayerOfClass:(Class)aClass;
+
+@end
+
+CGRect IJSVGLayerGetBoundingBoxBounds(CALayer<IJSVGDrawableLayer>* drawableLayer);
+NSMapTable<NSNumber*, CALayer<IJSVGDrawableLayer>*>* IJSVGLayerDefaultUsageMapTable(void);
+
+@interface IJSVGLayer : CALayer <IJSVGDrawableLayer, IJSVGMaskingLayer> {

@private
    IJSVGLayer* _maskingLayer;
+    NSMapTable<NSNumber*, CALayer<IJSVGDrawableLayer>*>* _layerUsageMapTable;
 }

-@property (nonatomic, assign) IJSVGGradientLayer* gradientFillLayer;
-@property (nonatomic, assign) IJSVGPatternLayer* patternFillLayer;
-@property (nonatomic, assign) IJSVGStrokeLayer* strokeLayer;
-@property (nonatomic, assign) IJSVGGradientLayer* gradientStrokeLayer;
-@property (nonatomic, assign) IJSVGPatternLayer* patternStrokeLayer;
-@property (nonatomic, readonly) BOOL requiresBackingScaleHelp;
-@property (nonatomic, assign) CGFloat backingScaleFactor;
-@property (nonatomic, assign) IJSVGRenderQuality renderQuality;
-@property (nonatomic, assign) CGBlendMode blendingMode;
-@property (nonatomic, assign) CGPoint absoluteOrigin;
-@property (nonatomic, assign) BOOL convertMasksToPaths;
-@property (nonatomic, retain) CALayer<IJSVGDrawableLayer>* clipLayer;
-@property (nonatomic, copy) CAShapeLayerFillRule clipRule;
-@property (nonatomic, copy) CAShapeLayerFillRule fillRule;
-@property (nonatomic, retain) CALayer<IJSVGDrawableLayer>* maskLayer;
-@property (nonatomic, readonly) CALayer<IJSVGDrawableLayer>* rootLayer;
-@property (nonatomic, readonly) CGRect absoluteFrame;
-@property (nonatomic, assign) CGRect boundingBox;
-@property (nonatomic, readonly) CGRect boundingBoxBounds;
-@property (nonatomic, readonly) CGRect strokeBoundingBox;
-@property (nonatomic, assign) CGRect outerBoundingBox;
-@property (nonatomic, readonly) CGRect outerBoundingBoxBounds;
-@property (nonatomic, assign) CALayer<IJSVGDrawableLayer>* referencingLayer;
-
 + (IJSVGLayerFillType)fillTypeForFill:(id)fill;

 + (NSArray*)deepestSublayersOfLayer:(CALayer*)layer;
-+ (void)recursivelyWalkLayer:(CALayer<IJSVGDrawableLayer>*)layer
-                   withBlock:(void (^)(CALayer<IJSVGDrawableLayer>* layer, BOOL* stop))block;
+ (void)recursivelyWalkLayer:(CALayer<IJSVGBasicLayer>*)layer
+                   withBlock:(void (^)(CALayer<IJSVGBasicLayer>* layer, BOOL* stop))block;
+
+ (CALayer<IJSVGDrawableLayer>*)firstSublayerOfClass:(Class)aClass
+                                           fromLayer:(CALayer<IJSVGDrawableLayer>*)layer;
+
+ (void)setBackingScaleFactor:(CGFloat)scale
+                renderQuality:(IJSVGRenderQuality)quality
+           recursivelyToLayer:(CALayer<IJSVGDrawableLayer>*)layer;

 - (void)applySublayerMaskToContext:(CGContextRef)context
                       forSublayer:(IJSVGLayer*)sublayer
                        withOffset:(CGPoint)offset;

 + (CGImageRef)newMaskImageForLayer:(CALayer<IJSVGDrawableLayer>*)layer
+                           options:(IJSVGLayerDrawingOptions)options
                             scale:(CGFloat)scale;

 + (CGImageRef)newImageForLayer:(CALayer<IJSVGDrawableLayer>*)layer
+                       options:(IJSVGLayerDrawingOptions)options
+                    colorSpace:(CGColorSpaceRef)colorSpace
+                    bitmapInfo:(uint32_t)bitmapInfo
+                         scale:(CGFloat)scale;
+
+ (CGImageRef)newImageWithSize:(CGSize)size
+                     drawBlock:(void (^)(CGContextRef context))drawBlock
                    colorSpace:(CGColorSpaceRef)colorSpace
                    bitmapInfo:(uint32_t)bitmapInfo
                         scale:(CGFloat)scale;

 + (void)renderLayer:(CALayer<IJSVGDrawableLayer>*)layer
-          inContext:(CGContextRef)ctx;
+          inContext:(CGContextRef)ctx
+            options:(IJSVGLayerDrawingOptions)options;

 + (void)applyBlendingMode:(CGBlendMode)blendMode
                toContext:(CGContextRef)ctx
             drawingBlock:(dispatch_block_t)drawingBlock;

-+ (void)clipContextWithClip:(CALayer<IJSVGDrawableLayer>*)clipLayer
-                    toLayer:(CALayer<IJSVGDrawableLayer>*)layer
-                  inContext:(CGContextRef)ctx
-               drawingBlock:(dispatch_block_t)drawingBlock;
+ (void)clipContextWithClipLayers:(NSArray<CALayer<IJSVGDrawableLayer>*>*)clipLayers
+                          toLayer:(CALayer<IJSVGDrawableLayer>*)layer
+                        inContext:(CGContextRef)ctx
+                     drawingBlock:(dispatch_block_t)drawingBlock;

-+ (void)clipContextWithMask:(CALayer<IJSVGDrawableLayer>*)maskLayer
+ (void)clipContextWithMask:(CALayer<IJSVGMaskingLayer>*)maskLayer
                    toLayer:(CALayer<IJSVGDrawableLayer>*)layer
                  inContext:(CGContextRef)context
               drawingBlock:(dispatch_block_t)drawingBlock;
@@ -129,6 +182,9 @@ typedef NS_OPTIONS(NSUInteger, IJSVGLayerTraits) {
 + (CGAffineTransform)absoluteTransformForLayer:(CALayer*)layer;
 + (CGRect)absoluteFrameForLayer:(CALayer<IJSVGDrawableLayer>*)layer;
 + (CGRect)calculateFrameForSublayers:(NSArray<CALayer<IJSVGDrawableLayer>*>*)layers;
+ (CGAffineTransform)userSpaceTransformForLayer:(CALayer<IJSVGDrawableLayer>*)layer;
+ (void)transformLayer:(CALayer<IJSVGDrawableLayer>*)layer
+intoUserSpaceUnitsFrom:(CALayer<IJSVGDrawableLayer>*)fromLayer;

 + (void)logLayer:(CALayer<IJSVGDrawableLayer>*)layer;

@@ -6,23 +6,59 @@
 //  Copyright © 2017 Curtis Hard. All rights reserved.
 //

-#import "IJSVG.h"
-#import "IJSVGGroupLayer.h"
-#import "IJSVGLayer.h"
-#import "IJSVGShapeLayer.h"
-#import "IJSVGTransformLayer.h"
-#import "IJSVGRootLayer.h"
+#import <IJSVG/IJSVG.h>
+#import <IJSVG/IJSVGGroupLayer.h>
+#import <IJSVG/IJSVGLayer.h>
+#import <IJSVG/IJSVGShapeLayer.h>
+#import <IJSVG/IJSVGTransformLayer.h>
+#import <IJSVG/IJSVGRootLayer.h>
+
+CGRect IJSVGLayerGetBoundingBoxBounds(CALayer<IJSVGDrawableLayer>* drawableLayer)
+{
+    return (CGRect) {
+        .origin = CGPointZero,
+        .size = drawableLayer.boundingBox.size
+    };
+}
+
+NSMapTable<NSNumber*, CALayer<IJSVGDrawableLayer>*>* IJSVGLayerDefaultUsageMapTable(void)
+{
+    return [[NSMapTable alloc] initWithKeyOptions:NSPointerFunctionsStrongMemory
+                                     valueOptions:NSPointerFunctionsWeakMemory
+                                         capacity:3];
+}
+

@implementation IJSVGLayer

+@synthesize backingScaleFactor = _backingScaleFactor;
+@synthesize requiresBackingScale;
+@synthesize renderQuality;
+@synthesize blendingMode;
+@synthesize absoluteOrigin;
+@synthesize clipPath = _clipPath;
+@synthesize clipRule = _clipRule;
+@synthesize clipLayers = _clipLayers;
+@synthesize clippingTransform;
+@synthesize clippingBoundingBox;
+@synthesize maskingClippingRect;
+@synthesize clipPathTransform;
+@synthesize colors;
+@synthesize boundingBox = _boundingBox;
+@synthesize layerTraits = _layerTraits;
+@synthesize maskingBoundingBox;
+@synthesize filter;
+@synthesize referencingLayer = _referencingLayer;
+@synthesize outerBoundingBox = _outerBoundingBox;
+@synthesize maskLayer = _maskLayer;
+@synthesize treatImplicitOriginAsTransform;
+@synthesize fillRule;
+
 - (void)dealloc
 {
-    (void)([_clipLayer release]), _clipLayer = nil;
-    (void)([_maskLayer release]), _maskLayer = nil;
-    (void)([_clipRule release]), _clipRule = nil;
-    (void)([_fillRule release]), _fillRule = nil;
-    (void)([_maskingLayer release]), _maskingLayer = nil;
-    [super dealloc];
+    if(_clipPath != NULL) {
+        CGPathRelease(_clipPath);
+    }
 }

 - (instancetype)init
@@ -34,6 +70,11 @@
    return self;
 }

+- (id<CAAction>)actionForKey:(NSString*)event
+{
+    return nil;
+}
+
 - (CAShapeLayerFillRule)fillRule
 {
    return kCAFillRuleNonZero;
@@ -61,6 +102,33 @@
    return IJSVGLayerFillTypeUnknown;
 }

+ (CALayer<IJSVGDrawableLayer>*)firstSublayerOfClass:(Class)aClass
+                                           fromLayer:(CALayer<IJSVGDrawableLayer>*)layer
+{
+    for(CALayer<IJSVGDrawableLayer>* sublayer in layer.sublayers) {
+        if(sublayer.class == aClass) {
+            return sublayer;
+        }
+    }
+    return nil;
+}
+
+ (void)applyAbsoluteTransformForLayer:(CALayer<IJSVGDrawableLayer>*)layer
+                             toContext:(CGContextRef)ctx
+{
+    CALayer<IJSVGDrawableLayer>* parentLayer = layer;
+    while((parentLayer = parentLayer.referencingLayer) != nil) {
+        CGContextConcatCTM(ctx, parentLayer.affineTransform);
+        
+        // only go up until we find a root layer, at that point, we know
+        // we can stop looking
+        if([parentLayer isKindOfClass:IJSVGRootLayer.class] == YES) {
+            break;
+        }
+    }
+    CGContextConcatCTM(ctx, layer.affineTransform);
+}
+
 + (CGAffineTransform)absoluteTransformForLayer:(CALayer<IJSVGDrawableLayer>*)layer
 {
    CGAffineTransform identity = CGAffineTransformIdentity;
@@ -73,11 +141,26 @@
        if([parentLayer isKindOfClass:IJSVGRootLayer.class] == YES) {
            break;
        }
-        
    }
    return CGAffineTransformConcat(identity, layer.affineTransform);
 }

+ (void)transformLayer:(CALayer<IJSVGDrawableLayer>*)layer
+intoUserSpaceUnitsFrom:(CALayer<IJSVGDrawableLayer>*)fromLayer
+{
+    CGAffineTransform transform = layer.affineTransform;
+    CGAffineTransform userSpaceTransform = [IJSVGLayer userSpaceTransformForLayer:fromLayer];
+    layer.affineTransform = CGAffineTransformConcat(transform, userSpaceTransform);
+}
+
+ (CGAffineTransform)userSpaceTransformForLayer:(CALayer<IJSVGDrawableLayer>*)layer
+{
+    CGRect absolutePosition = layer.outerBoundingBox;
+    return CGAffineTransformTranslate(CGAffineTransformIdentity,
+                                      -CGRectGetMinX(absolutePosition),
+                                      -CGRectGetMinY(absolutePosition));
+}
+
 + (CALayer<IJSVGDrawableLayer>*)rootLayerForLayer:(CALayer<IJSVGDrawableLayer>*)layer
 {
    CALayer<IJSVGDrawableLayer>* parentLayer = (CALayer<IJSVGDrawableLayer>*)layer.referencingLayer;
@@ -88,106 +171,206 @@
    return parentLayer;
 }

-+ (void)renderLayer:(CALayer<IJSVGDrawableLayer>*)layer
-          inContext:(CGContextRef)ctx
+ (void)clipContext:(CGContextRef)ctx
+               path:(CGPathRef)path
+               rule:(CAShapeLayerFillRule)rule
+       drawingBlock:(dispatch_block_t)block
+{
+    CGContextSaveGState(ctx);
+    CGContextAddPath(ctx, path);
+    if([rule isEqualToString:kCAFillRuleEvenOdd] == YES) {
+        CGContextEOClip(ctx);
+    } else {
+        CGContextClip(ctx);
+    }
+    block();
+    CGContextRestoreGState(ctx);
+}
+
+ (void)performBasicRenderOfLayer:(CALayer<IJSVGDrawableLayer>*)layer
+                        inContext:(CGContextRef)ctx
+                          options:(IJSVGLayerDrawingOptions)options
 {
    dispatch_block_t drawingBlock = ^{
+        if(layer.clipPath != NULL) {
+            [self clipContext:ctx
+                         path:layer.clipPath
+                         rule:layer.clipRule
+                 drawingBlock:^{
+                [layer performRenderInContext:ctx];
+            }];
+            return;
+        }
        [layer performRenderInContext:ctx];
    };
    [self applyBlendingMode:layer.blendingMode
                  toContext:ctx
               drawingBlock:^{
        // we need to clip first
-        if(layer.clipLayer == nil) {
+        IJSVGLayerDrawingOptions opt = IJSVGLayerDrawingOptionIgnoreClipping;
+        BOOL ignoreClipping = (options & opt) == opt;
+        if(ignoreClipping == YES || layer.clipLayers == nil) {
            drawingBlock();
            return;
        }
-        [self clipContextWithClip:layer.clipLayer
-                          toLayer:layer
-                        inContext:ctx
-                     drawingBlock:drawingBlock];
+        [self clipContextWithClipLayers:layer.clipLayers
+                                toLayer:layer
+                              inContext:ctx
+                           drawingBlock:drawingBlock];
    }];
 }

+ (void)renderLayer:(CALayer<IJSVGDrawableLayer>*)layer
+          inContext:(CGContextRef)ctx
+            options:(IJSVGLayerDrawingOptions)options
+{
+    [self performBasicRenderOfLayer:layer
+                          inContext:ctx
+                            options:options];
+}
+
 + (void)applyBlendingMode:(CGBlendMode)blendMode
                toContext:(CGContextRef)ctx
             drawingBlock:(dispatch_block_t)drawingBlock
 {
-    if (blendMode != kCGBlendModeNormal) {
-        CGContextSaveGState(ctx);
-        CGContextSetBlendMode(ctx, blendMode);
+    if(blendMode == kCGBlendModeNormal) {
        drawingBlock();
-        CGContextRestoreGState(ctx);
        return;
    }
+    CGContextSaveGState(ctx);
+    CGContextSetBlendMode(ctx, blendMode);
    drawingBlock();
+    CGContextRestoreGState(ctx);
 }

-/// Shape layers are the only thing we can clip, as they contain a path, however
-/// the layer passed to us from a clip could have groups contained with in it that
-/// have transforms on them, so simply recursively iterate over them and concat
-/// their transforms down to the path and clip at the end with the path.
-+ (void)recursivelyClip:(CALayer<IJSVGDrawableLayer>*)layer
-              transform:(CGAffineTransform)transform
-              inContext:(CGContextRef)ctx
+///// Shape layers are the only thing we can clip, as they contain a path, however
+///// the layer passed to us from a clip could have groups contained with in it that
+///// have transforms on them, so simply recursively iterate over them and concat
+///// their transforms down to the path and clip at the end with the path.
+//+ (void)recursivelyClip:(CALayer<IJSVGDrawableLayer>*)layer
+//              transform:(CGAffineTransform)transform
+//              inContext:(CGContextRef)ctx
+//{
+//    if([layer isKindOfClass:IJSVGShapeLayer.class]) {
+//        [self clipContextWithShapeLayer:(IJSVGShapeLayer*)layer
+//                              transform:transform
+//                              inContext:ctx];
+//        return;
+//    }
+//
+//    for(CALayer<IJSVGDrawableLayer>* drawableLayer in layer.sublayers) {
+//        CGAffineTransform drawTransform = CGAffineTransformConcat(transform,
+//                                                                  drawableLayer.affineTransform);
+//
+//        // If its not a shape layer, just go down the tree until we find one
+//        if([drawableLayer isKindOfClass:IJSVGShapeLayer.class] == NO) {
+//            [self recursivelyClip:drawableLayer
+//                        transform:drawTransform
+//                        inContext:ctx];
+//            continue;
+//        }
+//        IJSVGShapeLayer* shapeLayer = (IJSVGShapeLayer*)drawableLayer;
+//        [self clipContextWithShapeLayer:shapeLayer
+//                              transform:transform
+//                              inContext:ctx];
+//    }
+//}
+//
+//+ (void)clipContextWithShapeLayer:(IJSVGShapeLayer*)shapeLayer
+//                        transform:(CGAffineTransform)transform
+//                        inContext:(CGContextRef)ctx
+//{
+//    CGAffineTransform drawTransform = CGAffineTransformConcat(transform,
+//                                                              shapeLayer.affineTransform);
+//    // Shape layers paths are reset back to 0,0 origin, so in order to be
+//    // correct path, we need to shift it back to where it belongs.
+//    drawTransform = CGAffineTransformTranslate(transform,
+//                                           shapeLayer.frame.origin.x,
+//                                           shapeLayer.frame.origin.y);
+//    CGPathRef path = CGPathCreateCopyByTransformingPath(shapeLayer.path,
+//                                                        &drawTransform);
+//    CGContextAddPath(ctx, path);
+//    CGPathRelease(path);
+//}
+//
+//+ (void)clipContextWithClip:(CALayer<IJSVGDrawableLayer>*)clipLayer
+//                    toLayer:(CALayer<IJSVGDrawableLayer>*)layer
+//                  inContext:(CGContextRef)ctx
+//               drawingBlock:(dispatch_block_t)drawingBlock
+//{
+//    CGContextSaveGState(ctx);
+//    [self recursivelyClip:clipLayer
+//                transform:clipLayer.affineTransform
+//                inContext:ctx];
+//    if([layer.clipRule isEqualToString:kCAFillRuleEvenOdd]) {
+//        CGContextEOClip(ctx);
+//    } else {
+//        CGContextClip(ctx);
+//    }
+//    drawingBlock();
+//    CGContextRestoreGState(ctx);
+//}
+
+ (void)clipContextWithClipLayers:(NSArray<CALayer<IJSVGDrawableLayer>*>*)clipLayers
+                          toLayer:(CALayer<IJSVGDrawableLayer>*)layer
+                        inContext:(CGContextRef)ctx
+                     drawingBlock:(dispatch_block_t)drawingBlock
 {
-    if([layer isKindOfClass:IJSVGShapeLayer.class]) {
-        [self clipContextWithShapeLayer:(IJSVGShapeLayer*)layer
-                              transform:transform
-                              inContext:ctx];
+    CGContextSaveGState(ctx);
+    const CGFloat maskTolerance = .5f;
+    const CGFloat scale = layer.backingScaleFactor;
+    CGRect rect = layer.clippingBoundingBox;
+    
+    // weed out the no empty clipPaths
+    if(CGRectEqualToRect(rect, CGRectZero) == YES) {
+        drawingBlock();
        return;
    }
    
-    for(CALayer<IJSVGDrawableLayer>* drawableLayer in layer.sublayers) {
-        CGAffineTransform drawTransform = CGAffineTransformConcat(transform,
-                                                                  drawableLayer.affineTransform);
-        
-        // If its not a shape layer, just go down the tree until we find one
-        if([drawableLayer isKindOfClass:IJSVGShapeLayer.class] == NO) {
-            [self recursivelyClip:drawableLayer
-                        transform:drawTransform
-                        inContext:ctx];
-            continue;
+    CGSize size = CGSizeMake(CGRectGetWidth(rect),
+                             CGRectGetHeight(rect));
+    CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceGray();
+    void (^drawBlock)(CGContextRef maskCtx) = ^(CGContextRef maskCtx) {
+        CGImageRef maskImage = NULL;
+        for(CALayer<IJSVGDrawableLayer>* clipLayer in clipLayers) {
+            CGContextSaveGState(maskCtx);
+            CGRect layerRect = clipLayer.outerBoundingBox;
+            layerRect = CGRectApplyAffineTransform(layerRect, layer.clippingTransform);
+            CGImageRef layerMask = [self newMaskImageForLayer:clipLayer
+                                                      options:IJSVGLayerDrawingOptionIgnoreClipping
+                                                        scale:scale];
+            if(maskImage != NULL) {
+                CGRect maskRect = CGRectInset(rect, -maskTolerance, -maskTolerance);
+                CGContextClipToMask(maskCtx, maskRect, maskImage);
+            }
+            CGContextDrawImage(maskCtx, layerRect, layerMask);
+            CGImageRelease(layerMask);
+            if(maskImage != NULL) {
+                CGImageRelease(maskImage);
+            }
+            maskImage = CGBitmapContextCreateImage(maskCtx);
+            CGContextRestoreGState(maskCtx);
        }
-        IJSVGShapeLayer* shapeLayer = (IJSVGShapeLayer*)drawableLayer;
-        [self clipContextWithShapeLayer:shapeLayer
-                              transform:transform
-                              inContext:ctx];
-    }
-}
-
-+ (void)clipContextWithShapeLayer:(IJSVGShapeLayer*)shapeLayer
-                        transform:(CGAffineTransform)transform
-                        inContext:(CGContextRef)ctx
-{
-    CGAffineTransform drawTransform = CGAffineTransformConcat(transform,
-                                                              shapeLayer.affineTransform);
-    // Shape layers paths are reset back to 0,0 origin, so in order to be
-    // correct path, we need to shift it back to where it belongs.
-    drawTransform = CGAffineTransformTranslate(transform,
-                                           shapeLayer.frame.origin.x,
-                                           shapeLayer.frame.origin.y);
-    CGPathRef path = CGPathCreateCopyByTransformingPath(shapeLayer.path,
-                                                        &drawTransform);
-    CGContextAddPath(ctx, path);
-    CGPathRelease(path);
-}
-
-+ (void)clipContextWithClip:(CALayer<IJSVGDrawableLayer>*)clipLayer
-                    toLayer:(CALayer<IJSVGDrawableLayer>*)layer
-                  inContext:(CGContextRef)ctx
-               drawingBlock:(dispatch_block_t)drawingBlock
-{
-    CGContextSaveGState(ctx);
-    [self recursivelyClip:clipLayer
-                transform:CGAffineTransformIdentity
-                inContext:ctx];
-    if([layer.clipRule isEqualToString:kCAFillRuleEvenOdd]) {
-        CGContextEOClip(ctx);
-    } else {
-        CGContextClip(ctx);
-    }
+        CGImageRelease(maskImage);
+    };
+    
+    CGImageRef image = [self newImageWithSize:size
+                                    drawBlock:drawBlock
+                                   colorSpace:colorSpace
+                                   bitmapInfo:kCGImageAlphaNone
+                                        scale:scale];
+    
+    // we need to transform the mask rect back based on the inner bounding
+    // box of the layer, as this could be a group layer that inner box is
+    // not at 0,0.
+    CGRect layerRect = layer.innerBoundingBox;
+    CGAffineTransform transform = CGAffineTransformMakeTranslation(CGRectGetMinX(layerRect),
+                                                                   CGRectGetMinY(layerRect));
+    rect = CGRectApplyAffineTransform(rect, transform);
+    CGContextClipToMask(ctx, rect, image);
    drawingBlock();
+    CGImageRelease(image);
+    CGColorSpaceRelease(colorSpace);
    CGContextRestoreGState(ctx);
 }

@@ -197,21 +380,24 @@
               drawingBlock:(dispatch_block_t)drawingBlock
 {
    CGContextSaveGState(ctx);
-    CGRect bounds = layer.outerBoundingBox;
    CGFloat scale = layer.backingScaleFactor;
    CGImageRef maskImage = [self newMaskImageForLayer:maskLayer
+                                              options:IJSVGLayerDrawingOptionNone
                                                scale:scale];
-    CGContextClipToMask(ctx, bounds, maskImage);
+    CGContextClipToRect(ctx, maskLayer.maskingClippingRect);
+    CGContextClipToMask(ctx, maskLayer.maskingBoundingBox, maskImage);
    drawingBlock();
    CGImageRelease(maskImage);
    CGContextRestoreGState(ctx);
 }

 + (CGImageRef)newMaskImageForLayer:(CALayer<IJSVGDrawableLayer>*)layer
+                           options:(IJSVGLayerDrawingOptions)options
                             scale:(CGFloat)scale
 {
    CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceGray();
    CGImageRef ref = [self newImageForLayer:layer
+                                    options:options
                                 colorSpace:colorSpace
                                 bitmapInfo:kCGImageAlphaNone
                                      scale:scale];
@@ -219,21 +405,41 @@
    return ref;
 }

+ (CGImageRef)newImageWithSize:(CGSize)size
+                     drawBlock:(void (^)(CGContextRef context))drawBlock
+                    colorSpace:(CGColorSpaceRef)colorSpace
+                    bitmapInfo:(uint32_t)bitmapInfo
+                         scale:(CGFloat)scale
+{
+    CGContextRef offscreenContext = CGBitmapContextCreate(NULL,
+                                                          ceilf(size.width*scale),
+                                                          ceilf(size.height*scale),
+                                                          8, 0, colorSpace, bitmapInfo);
+    CGContextScaleCTM(offscreenContext, scale, scale);
+    drawBlock(offscreenContext);
+    CGImageRef image = CGBitmapContextCreateImage(offscreenContext);
+    CGContextRelease(offscreenContext);
+    return image;
+}
+
 + (CGImageRef)newImageForLayer:(CALayer<IJSVGDrawableLayer>*)layer
+                       options:(IJSVGLayerDrawingOptions)options
                    colorSpace:(CGColorSpaceRef)colorSpace
                    bitmapInfo:(uint32_t)bitmapInfo
                         scale:(CGFloat)scale
 {
    CGRect frame = layer.outerBoundingBox;
+    CGRect bounds = layer.innerBoundingBox;
    CGContextRef offscreenContext = CGBitmapContextCreate(NULL,
-                                                          ceilf(frame.size.width * scale),
-                                                          ceilf(frame.size.height * scale),
+                                                          ceilf(frame.size.width*scale),
+                                                          ceilf(frame.size.height*scale),
                                                          8, 0, colorSpace, bitmapInfo);
-            
-    CGContextSaveGState(offscreenContext);
    CGContextScaleCTM(offscreenContext, scale, scale);
-    CGContextTranslateCTM(offscreenContext, -frame.origin.x, -frame.origin.y);
-    [layer renderInContext:offscreenContext];
+    CGContextConcatCTM(offscreenContext, CGAffineTransformMakeTranslation(-bounds.origin.x,
+                                                                          -bounds.origin.y));
+    [IJSVGLayer renderLayer:layer
+                  inContext:offscreenContext
+                    options:options];
    CGImageRef image = CGBitmapContextCreateImage(offscreenContext);
    CGContextRelease(offscreenContext);
    return image;
@@ -261,9 +467,9 @@

 + (NSArray*)deepestSublayersOfLayer:(CALayer*)layer
 {
-    NSMutableArray* arr = [[[NSMutableArray alloc] init] autorelease];
+    NSMutableArray* arr = [[NSMutableArray alloc] init];
    for (CALayer* subLayer in layer.sublayers) {
-        if (subLayer.sublayers.count != 0) {
+        if(subLayer.sublayers.count != 0) {
            NSArray* moreLayers = [self deepestSublayersOfLayer:(IJSVGLayer*)subLayer];
            [arr addObjectsFromArray:moreLayers];
        } else {
@@ -273,8 +479,8 @@
    return arr;
 }

-+ (void)recursivelyWalkLayer:(CALayer<IJSVGDrawableLayer>*)layer
-                   withBlock:(void (^)(CALayer<IJSVGDrawableLayer>* layer, BOOL* stop))block
+ (void)recursivelyWalkLayer:(CALayer<IJSVGBasicLayer>*)layer
+                   withBlock:(void (^)(CALayer<IJSVGBasicLayer>* layer, BOOL* stop))block
 {
    // call for layer and mask if there is one
    BOOL stop = NO;
@@ -284,12 +490,25 @@
    }

    // sublayers!!
-    for (CALayer<IJSVGDrawableLayer>* aLayer in layer.sublayers) {
+    for (CALayer<IJSVGBasicLayer>* aLayer in layer.sublayers) {
        [self recursivelyWalkLayer:aLayer
                         withBlock:block];
    }
 }

+ (void)setBackingScaleFactor:(CGFloat)scale
+                renderQuality:(IJSVGRenderQuality)quality
+           recursivelyToLayer:(CALayer<IJSVGDrawableLayer>*)layer
+{
+    [self recursivelyWalkLayer:layer
+                     withBlock:^(CALayer<IJSVGDrawableLayer>*sublayer, BOOL *stop) {
+        if(sublayer.requiresBackingScale == YES) {
+            sublayer.backingScaleFactor = scale;
+        }
+        sublayer.renderQuality = quality;
+    }];
+}
+
 + (void)logLayer:(CALayer<IJSVGDrawableLayer>*)layer
 {
    [self logLayer:layer
@@ -333,7 +552,7 @@

 - (void)setBackingScaleFactor:(CGFloat)newFactor
 {
-    if (_backingScaleFactor == newFactor) {
+    if(_backingScaleFactor == newFactor) {
        return;
    }
    
@@ -343,9 +562,9 @@
    
    // make sure its applied to any mask or clipPath
    _maskLayer.backingScaleFactor = newFactor;
-    _clipLayer.backingScaleFactor = newFactor;
-    
-    [self setNeedsDisplay];
+    for(CALayer<IJSVGDrawableLayer>* clipLayer in _clipLayers) {
+        clipLayer.backingScaleFactor = newFactor;
+    }
 }

 - (void)performRenderInContext:(CGContextRef)ctx
@@ -362,24 +581,6 @@
    [super renderInContext:ctx];
 }

- (void)setConvertMasksToPaths:(BOOL)flag
-{
-    if (_convertMasksToPaths == flag) {
-        return;
-    }
-    _convertMasksToPaths = flag;
-    if (flag == YES) {
-        if (_maskingLayer != nil) {
-            (void)([_maskingLayer release]), _maskingLayer = nil;
-        }
-        _maskingLayer = [(IJSVGLayer*)self.mask retain];
-        self.mask = nil;
-    } else {
-        self.mask = _maskingLayer;
-        (void)([_maskingLayer release]), _maskingLayer = nil;
-    }
-}
-
 - (void)applySublayerMaskToContext:(CGContextRef)context
                       forSublayer:(IJSVGLayer*)sublayer
                        withOffset:(CGPoint)offset
@@ -391,7 +592,7 @@

    // walk up the superlayer chain
    CALayer* superlayer = self.superlayer;
-    if (IJSVGIsSVGLayer(superlayer) == YES) {
+    if(IJSVGIsSVGLayer(superlayer) == YES) {
        [(IJSVGLayer*)superlayer applySublayerMaskToContext:context
                                                forSublayer:(IJSVGLayer*)self
                                                 withOffset:layerOffset];
@@ -402,14 +603,14 @@

    // if its a group we need to get the lowest level children
    // and walk up the chain again
-    if ([maskingLayer isKindOfClass:[IJSVGGroupLayer class]]) {
+    if([maskingLayer isKindOfClass:[IJSVGGroupLayer class]]) {
        NSArray* subs = [IJSVGLayer deepestSublayersOfLayer:maskingLayer];
        for (IJSVGLayer* subLayer in subs) {
            [subLayer applySublayerMaskToContext:context
                                     forSublayer:(IJSVGLayer*)self
                                      withOffset:layerOffset];
        }
-    } else if ([maskingLayer isKindOfClass:[IJSVGShapeLayer class]]) {
+    } else if([maskingLayer isKindOfClass:[IJSVGShapeLayer class]]) {
        // is a shape, go for it!
        CGPathRef maskPath = maskingLayer.path;
        CGContextTranslateCTM(context, -layerOffset.x, -layerOffset.y);
@@ -420,19 +621,14 @@
    CGContextConcatCTM(context, sublayerTransform);
 }

- (CALayer<IJSVGDrawableLayer>*)rootLayer
-{
-    return [self.class rootLayerForLayer:self];
-}
-
 - (CGAffineTransform)absoluteTransform
 {
    return [IJSVGLayer absoluteTransformForLayer:self];
 }

- (BOOL)requiresBackingScaleHelp
+- (BOOL)requiresBackingScale
 {
-    return _maskLayer != nil || _clipLayer != nil;
+    return _maskLayer != nil || (_clipLayers != nil && _clipLayers.count != 0);
 }

 - (IJSVGShapeLayer*)maskingLayer
@@ -443,12 +639,8 @@
 - (void)renderInContext:(CGContextRef)ctx
 {
    [IJSVGLayer renderLayer:self
-                  inContext:ctx];
-}
-
- (id<CAAction>)actionForKey:(NSString*)event
-{
-    return nil;
+                  inContext:ctx
+                    options:IJSVGLayerDrawingOptionNone];
 }

 - (CGRect)absoluteFrame
@@ -466,14 +658,6 @@
    return CGRectIsNull(_outerBoundingBox) == NO ? _outerBoundingBox : self.frame;
 }

- (CGRect)outerBoundingBoxBounds
-{
-    return (CGRect) {
-        .origin = CGPointZero,
-        .size = self.outerBoundingBox.size
-    };
-}
-
 - (CGRect)boundingBoxBounds
 {
    return (CGRect) {
@@ -482,9 +666,12 @@
    };
 }

- (CGRect)strokeBoundingBox
+- (CGRect)innerBoundingBox
 {
-    return self.boundingBox;
+    return (CGRect) {
+        .origin = CGPointZero,
+        .size = self.outerBoundingBox.size
+    };
 }

 - (CALayer<IJSVGDrawableLayer> *)referencingLayer
@@ -497,4 +684,87 @@
    return self.sublayers;
 }

+- (void)setClipPath:(CGPathRef)clipPath
+{
+    if(_clipPath != NULL) {
+        CGPathRelease(_clipPath);
+    }
+    _clipPath = CGPathRetain(clipPath);
+}
+
+- (NSMapTable<NSNumber*,CALayer<IJSVGDrawableLayer>*>*)layerUsageMapTable
+{
+    if(_layerUsageMapTable == nil) {
+        _layerUsageMapTable = IJSVGLayerDefaultUsageMapTable();
+    }
+    return _layerUsageMapTable;
+}
+
+- (void)setLayer:(CALayer<IJSVGDrawableLayer>*)layer
+    forUsageType:(IJSVGLayerUsageType)type
+{
+    [self.layerUsageMapTable setObject:layer
+                                forKey:@(type)];
+}
+
+- (CALayer<IJSVGDrawableLayer>*)layerForUsageType:(IJSVGLayerUsageType)type
+{
+    return [self.layerUsageMapTable objectForKey:@(type)];
+}
+
+- (CALayer<IJSVGDrawableLayer>*)strokeLayer:(IJSVGLayerUsageType*)usageType
+{
+    CALayer<IJSVGDrawableLayer>* layer = nil;
+    if((layer = [self layerForUsageType:IJSVGLayerUsageTypeStrokeGeneric]) != nil) {
+        *usageType = IJSVGLayerUsageTypeStrokeGeneric;
+        return layer;
+    }
+    
+    if((layer = [self layerForUsageType:IJSVGLayerUsageTypeStrokeGradient]) != nil) {
+        *usageType = IJSVGLayerUsageTypeStrokeGradient;
+        return layer;
+    }
+    
+    if((layer = [self layerForUsageType:IJSVGLayerUsageTypeStrokePattern]) != nil) {
+        *usageType = IJSVGLayerUsageTypeStrokePattern;
+        return layer;
+    }
+    return nil;
+}
+
+- (void)addTraits:(IJSVGLayerTraits)traits
+{
+    _layerTraits |= traits;
+}
+
+- (void)removeTraits:(IJSVGLayerTraits)traits
+{
+    _layerTraits = _layerTraits & ~traits;
+}
+
+- (BOOL)matchesTraits:(IJSVGLayerTraits)traits
+{
+    return (_layerTraits & traits) == traits;
+}
+
+- (BOOL)treatImplicitOriginAsTransform
+{
+    return YES;
+}
+
+- (IJSVGTraitedColorStorage*)colors
+{
+    IJSVGTraitedColorStorage* colorList = [[IJSVGTraitedColorStorage alloc] init];
+    for(CALayer<IJSVGDrawableLayer>* layer in self.sublayers) {
+        [colorList unionColorStorage:layer.colors];
+    }
+    return colorList;
+}
+
+- (CALayer<IJSVGDrawableLayer>*)firstSublayerOfClass:(Class)aClass
+{
+    return [self.class firstSublayerOfClass:aClass
+                                  fromLayer:self];
+}
+
@end
@@ -6,13 +6,17 @@
 //  Copyright © 2017 Curtis Hard. All rights reserved.
 //

-#import "IJSVGLayer.h"
-#import "IJSVGPattern.h"
+#import <IJSVG/IJSVGLayer.h>
+#import <IJSVG/IJSVGPattern.h>
 #import <QuartzCore/QuartzCore.h>

@interface IJSVGPatternLayer : IJSVGLayer

-@property (nonatomic, retain) CALayer<IJSVGDrawableLayer>* pattern;
-@property (nonatomic, retain) IJSVGPattern* patternNode;
+@property (nonatomic, strong) CALayer<IJSVGDrawableLayer>* pattern;
+@property (nonatomic, strong) IJSVGPattern* patternNode;
+
+- (void)computeCellSize:(CGSize*)cellSize
+                viewBox:(CGRect*)viewBox
+                 origin:(CGPoint*)origin;

@end
@@ -20,22 +20,23 @@

@implementation IJSVGPatternLayer

- (void)dealloc
-{
-    (void)([_pattern release]), _pattern = nil;
-    (void)([_patternNode release]), _patternNode = nil;
-    [super dealloc];
-}
-
- (BOOL)requiresBackingScaleHelp
+- (BOOL)requiresBackingScale
 {
    return YES;
 }

+- (void)setBackingScaleFactor:(CGFloat)backingScaleFactor
+{
+    [super setBackingScaleFactor:backingScaleFactor];
+    [IJSVGLayer setBackingScaleFactor:backingScaleFactor
+                        renderQuality:self.renderQuality
+                   recursivelyToLayer:self.pattern];
+}
+
 void IJSVGPatternDrawingCallBack(void* info, CGContextRef ctx)
 {
    // reassign the layer
-    IJSVGPatternLayer* layer = (IJSVGPatternLayer*)info;
+    IJSVGPatternLayer* layer = (__bridge IJSVGPatternLayer*)info;
    CGSize size = layer.cellSize;
    CGContextSaveGState(ctx);
    CGRect rect = CGRectMake(0.f, 0.f, size.width, size.height);
@@ -44,15 +45,13 @@ void IJSVGPatternDrawingCallBack(void* info, CGContextRef ctx)
    IJSVGViewBoxAlignment alignment = layer.patternNode.viewBoxAlignment;
    IJSVGViewBoxMeetOrSlice meetOrSlice = layer.patternNode.viewBoxMeetOrSlice;
    CGRect viewBox = layer.viewBox;
-    
-    [IJSVGViewBox drawViewBox:viewBox
-                       inRect:rect
-                    alignment:alignment
-                  meetOrSlice:meetOrSlice
-                    inContext:ctx
-                 drawingBlock:^(CGSize size) {
-        [layer.pattern renderInContext:ctx];
-    }];
+    IJSVGViewBoxDrawingBlock drawBlock = ^(CGFloat scale[]) {
+        [IJSVGLayer renderLayer:layer.pattern
+                      inContext:ctx
+                        options:IJSVGLayerDrawingOptionNone];
+    };
+    IJSVGContextDrawViewBox(ctx, viewBox, rect, alignment, meetOrSlice,
+                            drawBlock);
    CGContextSaveGState(ctx);
 };

@@ -61,6 +60,49 @@ void IJSVGPatternDrawingCallBack(void* info, CGContextRef ctx)
    return [super referencingLayer] ?: self.superlayer;
 }

+- (void)computeCellSize:(CGSize*)cellSize
+                viewBox:(CGRect*)viewBox
+                 origin:(CGPoint*)origin
+{
+    CALayer<IJSVGDrawableLayer>* layer = (CALayer<IJSVGDrawableLayer>*)self.referencingLayer;
+    CGRect rect = IJSVGLayerGetBoundingBoxBounds(layer);
+    
+    // get the bounds, we need these as when we render we might need to swap
+    // the coordinates over to objectBoundingBox
+    IJSVGUnitLength* xLength = _patternNode.x;
+    IJSVGUnitLength* yLength = _patternNode.y;
+    IJSVGUnitLength* wLength = _patternNode.width;
+    IJSVGUnitLength* hLength = _patternNode.height;
+        
+    // actually do the swap if required
+    if(_patternNode.units == IJSVGUnitObjectBoundingBox) {
+        wLength = wLength.lengthByMatchingPercentage;
+        hLength = hLength.lengthByMatchingPercentage;
+        xLength = xLength.lengthByMatchingPercentage;
+        yLength = yLength.lengthByMatchingPercentage;
+    }
+    
+    *origin = CGPointMake([xLength computeValue:rect.size.width],
+                          [yLength computeValue:rect.size.height]);
+    
+    CGFloat width = [wLength computeValue:rect.size.width];
+    CGFloat height = [hLength computeValue:rect.size.height];
+    *cellSize = CGSizeMake(width, height);
+    
+    // who knew that patterns have viewBoxes? Not me, but here is an implementation
+    // of it anyway
+    if(_patternNode.viewBox != nil && _patternNode.viewBox.isZeroRect == NO) {
+        IJSVGUnitRect* nViewBox = _patternNode.viewBox;
+        if(_patternNode.contentUnits == IJSVGUnitObjectBoundingBox) {
+            nViewBox = [nViewBox copyByConvertingToUnitsLengthType:IJSVGUnitLengthTypePercentage];
+        }
+        *viewBox = [nViewBox computeValue:rect.size];
+    } else {
+        // no viewbox is assigned, so just map it 1:1 with its cellSize
+        *viewBox = CGRectMake(0.f, 0.f, cellSize->width, cellSize->height);
+    }
+}
+
 - (void)drawInContext:(CGContextRef)ctx
 {
    // holder for callback
@@ -71,53 +113,31 @@ void IJSVGPatternDrawingCallBack(void* info, CGContextRef ctx)
    CGContextSetFillColorSpace(ctx, patternSpace);
    CGColorSpaceRelease(patternSpace);
    
-    CGRect rect = self.referencingLayer.boundingBoxBounds;
-    
-    IJSVGUnitLength* wLength = _patternNode.width;
-    IJSVGUnitLength* hLength = _patternNode.height;
-    
-    if(self.patternNode.units == IJSVGUnitObjectBoundingBox ||
-       self.patternNode.contentUnits == IJSVGUnitObjectBoundingBox) {
-        wLength = wLength.lengthByMatchingPercentage;
-        hLength = hLength.lengthByMatchingPercentage;
-    }
-    
-    CGFloat width = [wLength computeValue:rect.size.width];
-    CGFloat height = [hLength computeValue:rect.size.height];
-    _cellSize = CGSizeMake(width, height);
-    
    CALayer<IJSVGDrawableLayer>* layer = (CALayer<IJSVGDrawableLayer>*)self.referencingLayer;
-        
+            
    // transform us back into the correct space
    CGAffineTransform transform = CGAffineTransformIdentity;
-    if (self.patternNode.units == IJSVGUnitUserSpaceOnUse) {
-        CGRect frame = layer.boundingBox;
-        transform = [IJSVGLayer absoluteTransformForLayer:layer];
-        transform = CGAffineTransformTranslate(transform,
-                                               -CGRectGetMinX(frame),
-                                               -CGRectGetMinY(frame));
+    if(_patternNode.units == IJSVGUnitUserSpaceOnUse) {
+        transform = [IJSVGLayer userSpaceTransformForLayer:layer];
    }
-
-    transform = CGAffineTransformConcat(transform, IJSVGConcatTransforms(self.patternNode.transforms));
-    // transform the X and Y shift
-    transform = CGAffineTransformTranslate(transform,
-                                           [_patternNode.x computeValue:rect.size.width],
-                                           [_patternNode.y computeValue:rect.size.height]);
    
-    // who knew that patterns have viewBoxes? Not me, but here is an implementation
-    // of it anyway
-    if(_patternNode.viewBox != nil && _patternNode.viewBox.isZeroRect == NO) {
-        if(_patternNode.units == IJSVGUnitObjectBoundingBox) {
-            IJSVGUnitRect* viewBox = nil;
-            viewBox = [[_patternNode.viewBox copyByConvertingToUnitsLengthType:IJSVGUnitLengthTypePercentage] autorelease];
-            _viewBox = [viewBox computeValue:rect.size];
-        }
-    }
-        
+    CGPoint origin = CGPointZero;
+    [self computeCellSize:&_cellSize
+                  viewBox:&_viewBox
+                   origin:&origin];
+    
+    // transform the X and Y shift
+    transform = CGAffineTransformConcat(transform, IJSVGConcatTransforms(self.patternNode.transforms));
+    transform = CGAffineTransformTranslate(transform, origin.x, origin.y);
+    
+    // its possible that this layer is shifted inwards due to a stroke on the
+    // parent layer
+    transform = CGAffineTransformConcat(transform, [IJSVGLayer userSpaceTransformForLayer:self]);
+            
    // create the pattern
-    CGRect selfBounds = self.boundingBoxBounds;
+    CGRect selfBounds = IJSVGLayerGetBoundingBoxBounds(self);
    CGPatternRef ref = CGPatternCreate((void*)self, selfBounds,
-        transform, width, height,
+        transform, _cellSize.width, _cellSize.height,
        kCGPatternTilingConstantSpacing,
        true, &callbacks);

@@ -135,4 +155,9 @@ void IJSVGPatternDrawingCallBack(void* info, CGContextRef ctx)
    return @[self.pattern];
 }

+- (IJSVGTraitedColorStorage*)colors
+{
+    return _pattern.colors;
+}
+
@end
@@ -18,6 +18,7 @@
 - (void)renderInContext:(CGContextRef)ctx
               viewPort:(CGRect)viewPort
           backingScale:(CGFloat)backingScale
-                quality:(IJSVGRenderQuality)quality;
+                quality:(IJSVGRenderQuality)quality
+    ignoreIntrinsicSize:(BOOL)ignoreIntrinsicSize;

@end
@@ -6,7 +6,7 @@
 //  Copyright © 2022 Curtis Hard. All rights reserved.
 //

-#import "IJSVGRootLayer.h"
+#import <IJSVG/IJSVGRootLayer.h>

@implementation IJSVGRootLayer

@@ -14,19 +14,23 @@
 {
    if(self.viewBox != nil) {
        CGRect viewBox = [self.viewBox computeValue:CGSizeZero];
-        __block IJSVGRootLayer* weakSelf = self;
-        IJSVGViewBoxDrawingBlock drawingBlock = ^(CGSize size) {
+        __weak IJSVGRootLayer* weakSelf = self;
+        IJSVGViewBoxDrawingBlock drawingBlock = ^(CGFloat scale[]) {
+            CGContextSaveGState(ctx);
            // we have to make sure we set the backing scale factor once
            // we know how scale this will be drawn at
-            weakSelf.backingScaleFactor *= MAX(size.width, size.height);
+            CGFloat nScale = MIN(scale[0], scale[1]);
+            nScale += weakSelf.backingScaleFactor;
+            weakSelf.backingScaleFactor = nScale;
+            
+            // perform the actual render now we have computed backing scale
            [super performRenderInContext:ctx];
+            CGContextRestoreGState(ctx);
        };
-        [IJSVGViewBox drawViewBox:viewBox
-                           inRect:self.boundingBoxBounds
-                        alignment:self.viewBoxAlignment
-                      meetOrSlice:self.viewBoxMeetOrSlice
-                        inContext:ctx
-                     drawingBlock:drawingBlock];
+        
+        IJSVGContextDrawViewBox(ctx, viewBox, IJSVGLayerGetBoundingBoxBounds(self),
+                                self.viewBoxAlignment,
+                                self.viewBoxMeetOrSlice, drawingBlock);
        return;
    }
    [super performRenderInContext:ctx];
@@ -34,6 +38,8 @@

 - (void)setBackingScaleFactor:(CGFloat)backingScaleFactor
 {
+    // get nearest .5f
+    backingScaleFactor = MAX(round(backingScaleFactor * 2.f) / 2.f, .5f);
    [super setBackingScaleFactor:backingScaleFactor];
    if(_disableBackingScalePropagation == YES) {
        return;
@@ -43,13 +49,10 @@

 - (void)propagateBackingScalePropertiesToSublayers
 {
-    __block IJSVGRootLayer* weakSelf = self;
    for(CALayer<IJSVGDrawableLayer>* layer in self.sublayers) {
-        [IJSVGLayer recursivelyWalkLayer:layer
-                               withBlock:^(CALayer<IJSVGDrawableLayer>* propLayer, BOOL *stop) {
-            propLayer.renderQuality = weakSelf.renderQuality;
-            propLayer.backingScaleFactor = weakSelf.backingScaleFactor;
-        }];
+        [IJSVGLayer setBackingScaleFactor:self.backingScaleFactor
+                            renderQuality:self.renderQuality
+                       recursivelyToLayer:layer];
    }
 }

@@ -57,15 +60,34 @@
               viewPort:(CGRect)viewPort
           backingScale:(CGFloat)backingScale
                quality:(IJSVGRenderQuality)quality
+    ignoreIntrinsicSize:(BOOL)ignoreIntrinsicSize
 {
    CGRect frame = viewPort;
+    IJSVGUnitSize* size = nil;
+    
+    // The SVG might have an intrinsic size against it, if so, we need to use
+    // that instead of the viewPort size to make sure we obey the render correctly.
+    if(ignoreIntrinsicSize == NO && (size = self.intrinsicSize) != nil) {
+        CGFloat width = 0.f;
+        CGFloat height = 0.f;
+        if((width = [size.width computeValue:frame.size.width]) != 0.f) {
+            frame.size.width = width;
+        }
+        if((height = [size.height computeValue:frame.size.height]) != 0.f) {
+            frame.size.height = height;
+        }
+    }
    self.frame = frame;
    _disableBackingScalePropagation = YES;
    self.backingScaleFactor = backingScale;
    self.renderQuality = quality;
    _disableBackingScalePropagation = NO;
-    [self propagateBackingScalePropertiesToSublayers];
    [self renderInContext:ctx];
 }

+- (BOOL)treatImplicitOriginAsTransform
+{
+    return NO;
+}
+
@end
@@ -14,32 +14,10 @@

@private
    IJSVGLayer* _maskingLayer;
+    NSMapTable<NSNumber*, CALayer<IJSVGDrawableLayer>*>* _layerUsageMapTable;
 }

-@property (nonatomic, assign) IJSVGGradientLayer* gradientFillLayer;
-@property (nonatomic, assign) IJSVGPatternLayer* patternFillLayer;
-@property (nonatomic, assign) IJSVGStrokeLayer* strokeLayer;
-@property (nonatomic, assign) IJSVGGradientLayer* gradientStrokeLayer;
-@property (nonatomic, assign) IJSVGPatternLayer* patternStrokeLayer;
-@property (nonatomic, assign) CGFloat backingScaleFactor;
-@property (nonatomic, readonly) BOOL requiresBackingScaleHelp;
-@property (nonatomic, assign) IJSVGRenderQuality renderQuality;
-@property (nonatomic, assign) CGBlendMode blendingMode;
-@property (nonatomic, assign) CGPoint absoluteOrigin;
-@property (nonatomic, assign) CGPoint originalPathOrigin;
-@property (nonatomic, assign) BOOL convertMasksToPaths;
@property (nonatomic, assign) IJSVGPrimitivePathType primitiveType;
-@property (nonatomic, readonly) CGRect computedFrame;
-@property (nonatomic, retain) CALayer<IJSVGDrawableLayer>* clipLayer;
-@property (nonatomic, retain) CALayer<IJSVGDrawableLayer>* maskLayer;
-@property (nonatomic, readonly) CALayer<IJSVGDrawableLayer>* rootLayer;
-@property (nonatomic, readonly) CGRect absoluteFrame;
-@property (nonatomic, assign) CGRect boundingBox;
-@property (nonatomic, assign) CGRect outerBoundingBox;
-@property (nonatomic, readonly) CGRect boundingBoxBounds;
-@property (nonatomic, assign) CALayer<IJSVGDrawableLayer>* referencingLayer;
-@property (nonatomic, assign) CGRect strokeBoundingBox;
-@property (nonatomic, copy) CAShapeLayerFillRule clipRule;

 - (void)applySublayerMaskToContext:(CGContextRef)context
                       forSublayer:(IJSVGLayer*)sublayer
@@ -6,23 +6,47 @@
 //  Copyright © 2017 Curtis Hard. All rights reserved.
 //

-#import "IJSVGGroupLayer.h"
-#import "IJSVGShapeLayer.h"
+#import <IJSVG/IJSVGGroupLayer.h>
+#import <IJSVG/IJSVGShapeLayer.h>
+#import <IJSVG/IJSVGStrokeLayer.h>
+#import <IJSVG/IJSVGGradientLayer.h>
+#import <IJSVG/IJSVGTraitedColorStorage.h>
+#import <IJSVG/IJSVGPatternLayer.h>

@implementation IJSVGShapeLayer

+@synthesize backingScaleFactor = _backingScaleFactor;
+@synthesize requiresBackingScale;
+@synthesize renderQuality;
+@synthesize blendingMode;
+@synthesize absoluteOrigin;
+@synthesize clipPath = _clipPath;
+@synthesize clipRule;
+@synthesize clipLayers = _clipLayers;
+@synthesize clippingTransform;
+@synthesize clippingBoundingBox;
+@synthesize maskingClippingRect;
+@synthesize clipPathTransform;
+@synthesize colors;
+@synthesize boundingBox;
+@synthesize layerTraits = _layerTraits;
+@synthesize maskingBoundingBox;
+@synthesize filter;
+@synthesize referencingLayer = _referencingLayer;
+@synthesize outerBoundingBox;
+@synthesize maskLayer = _maskLayer;
+@synthesize treatImplicitOriginAsTransform;
+
 - (void)dealloc
 {
-    (void)([_clipLayer release]), _clipLayer = nil;
-    (void)([_maskLayer release]), _maskLayer = nil;
-    (void)([_maskingLayer release]), _maskingLayer = nil;
-    (void)([_clipRule release]), _clipRule = nil;
-    [super dealloc];
+    if(_clipPath != NULL) {
+        CGPathRelease(_clipPath);
+    }
 }

- (CALayer<IJSVGDrawableLayer> *)rootLayer
+- (id<CAAction>)actionForKey:(NSString*)event
 {
-    return [IJSVGLayer rootLayerForLayer:self];
+    return nil;
 }

 - (CGRect)absoluteFrame
@@ -48,14 +72,27 @@
    };
 }

- (BOOL)requiresBackingScaleHelp
+- (CGRect)innerBoundingBox
 {
-    return _maskLayer != nil || _clipLayer != nil;
+    return self.bounds;
+}
+
+- (BOOL)requiresBackingScale
+{
+    return _maskLayer != nil || (_clipLayers != nil && _clipLayers.count != 0);
+}
+
+- (void)setClipPath:(CGPathRef)clipPath
+{
+    if(_clipPath != NULL) {
+        CGPathRelease(_clipPath);
+    }
+    _clipPath = CGPathRetain(clipPath);
 }

 - (void)setBackingScaleFactor:(CGFloat)newFactor
 {
-    if (_backingScaleFactor == newFactor) {
+    if(_backingScaleFactor == newFactor) {
        return;
    }
        
@@ -65,7 +102,10 @@
    
    // make sure its applied to any mask or clipPath
    _maskLayer.backingScaleFactor = newFactor;
-    _clipLayer.backingScaleFactor = newFactor;
+    
+    for(CALayer<IJSVGDrawableLayer>* clipLayer in _clipLayers) {
+        clipLayer.backingScaleFactor = newFactor;
+    }
    
    [self setNeedsDisplay];
 }
@@ -84,24 +124,6 @@
    [super renderInContext:ctx];
 }

- (void)setConvertMasksToPaths:(BOOL)flag
-{
-    if (_convertMasksToPaths == flag) {
-        return;
-    }
-    _convertMasksToPaths = flag;
-    if (flag == YES) {
-        if (_maskingLayer != nil) {
-            (void)([_maskingLayer release]), _maskingLayer = nil;
-        }
-        _maskingLayer = [(IJSVGLayer*)self.mask retain];
-        self.mask = nil;
-    } else {
-        self.mask = _maskingLayer;
-        (void)([_maskingLayer release]), _maskingLayer = nil;
-    }
-}
-
 - (void)applySublayerMaskToContext:(CGContextRef)context
                       forSublayer:(IJSVGLayer*)sublayer
                        withOffset:(CGPoint)offset
@@ -113,7 +135,7 @@

    // walk up the superlayer chain
    CALayer* superlayer = self.superlayer;
-    if (IJSVGIsSVGLayer(superlayer) == YES) {
+    if(IJSVGIsSVGLayer(superlayer) == YES) {
        [(IJSVGLayer*)superlayer applySublayerMaskToContext:context
                                                forSublayer:(IJSVGLayer*)self
                                                 withOffset:layerOffset];
@@ -124,14 +146,14 @@

    // if its a group we need to get the lowest level children
    // and walk up the chain again
-    if ([maskingLayer isKindOfClass:[IJSVGGroupLayer class]]) {
+    if([maskingLayer isKindOfClass:[IJSVGGroupLayer class]]) {
        NSArray* subs = [IJSVGLayer deepestSublayersOfLayer:maskingLayer];
        for (IJSVGLayer* subLayer in subs) {
            [subLayer applySublayerMaskToContext:context
                                     forSublayer:(IJSVGLayer*)self
                                      withOffset:layerOffset];
        }
-    } else if ([maskingLayer isKindOfClass:[IJSVGShapeLayer class]]) {
+    } else if([maskingLayer isKindOfClass:[IJSVGShapeLayer class]]) {
        // is a shape, go for it!
        CGPathRef maskPath = maskingLayer.path;
        CGContextTranslateCTM(context, -layerOffset.x, -layerOffset.y);
@@ -150,11 +172,47 @@
 - (void)renderInContext:(CGContextRef)ctx
 {
    [IJSVGLayer renderLayer:(IJSVGLayer*)self
-                  inContext:ctx];
+                  inContext:ctx
+                    options:IJSVGLayerDrawingOptionNone];
 }

- (id<CAAction>)actionForKey:(NSString*)event
+- (NSMapTable<NSNumber*,CALayer<IJSVGDrawableLayer>*>*)layerUsageMapTable
 {
+    if(_layerUsageMapTable == nil) {
+        _layerUsageMapTable = IJSVGLayerDefaultUsageMapTable();
+    }
+    return _layerUsageMapTable;
+}
+
+- (void)setLayer:(CALayer<IJSVGDrawableLayer>*)layer
+    forUsageType:(IJSVGLayerUsageType)type
+{
+    [self.layerUsageMapTable setObject:layer
+                                forKey:@(type)];
+}
+
+- (CALayer<IJSVGDrawableLayer>*)layerForUsageType:(IJSVGLayerUsageType)type
+{
+    return [self.layerUsageMapTable objectForKey:@(type)];
+}
+
+- (CALayer<IJSVGDrawableLayer>*)strokeLayer:(IJSVGLayerUsageType*)usageType
+{
+    CALayer<IJSVGDrawableLayer>* layer = nil;
+    if((layer = [self layerForUsageType:IJSVGLayerUsageTypeStrokeGeneric]) != nil) {
+        *usageType = IJSVGLayerUsageTypeStrokeGeneric;
+        return layer;
+    }
+    
+    if((layer = [self layerForUsageType:IJSVGLayerUsageTypeStrokeGradient]) != nil) {
+        *usageType = IJSVGLayerUsageTypeStrokeGradient;
+        return layer;
+    }
+    
+    if((layer = [self layerForUsageType:IJSVGLayerUsageTypeStrokePattern]) != nil) {
+        *usageType = IJSVGLayerUsageTypeStrokePattern;
+        return layer;
+    }
    return nil;
 }

@@ -163,4 +221,92 @@
    return self.sublayers;
 }

+- (BOOL)treatImplicitOriginAsTransform
+{
+    return YES;
+}
+
+- (void)addTraits:(IJSVGLayerTraits)traits
+{
+    _layerTraits |= traits;
+}
+
+- (void)removeTraits:(IJSVGLayerTraits)traits
+{
+    _layerTraits = _layerTraits & ~traits;
+}
+
+- (BOOL)matchesTraits:(IJSVGLayerTraits)traits
+{
+    return (_layerTraits & traits) == traits;
+}
+
+- (CALayer<IJSVGDrawableLayer>*)firstSublayerOfClass:(Class)aClass
+{
+    return [IJSVGLayer firstSublayerOfClass:aClass
+                                  fromLayer:self];
+}
+
+- (IJSVGTraitedColorStorage*)colors
+{
+    IJSVGTraitedColorStorage* list = [[IJSVGTraitedColorStorage alloc] init];
+    
+    // we have a fill color
+    if([self matchesTraits:IJSVGLayerTraitFilled] == YES) {
+        IJSVGShapeLayer* fillLayer = nil;
+        if((fillLayer = (IJSVGShapeLayer*)[self layerForUsageType:IJSVGLayerUsageTypeFillGeneric]) != nil) {
+            CGColorRef colorRef = NULL;
+            if((colorRef = fillLayer.fillColor) != NULL) {
+                NSColor* nsColor = [NSColor colorWithCGColor:colorRef];
+                IJSVGTraitedColor* color = [IJSVGTraitedColor colorWithColor:nsColor
+                                                                      traits:IJSVGColorUsageTraitFill];
+                [list addColor:color];
+            }
+        }
+        
+        // patterns
+        if((fillLayer = (IJSVGShapeLayer*)[self layerForUsageType:IJSVGLayerUsageTypeFillPattern]) != nil) {
+            IJSVGTraitedColorStorage* storage = fillLayer.colors;
+            [storage addTraits:IJSVGColorUsageTraitFill];
+            [list unionColorStorage:storage];
+        }
+        
+        // gradients
+        if((fillLayer = (IJSVGShapeLayer*)[self layerForUsageType:IJSVGLayerUsageTypeFillGradient]) != nil) {
+            IJSVGTraitedColorStorage* storage = fillLayer.colors;
+            [storage addTraits:IJSVGColorUsageTraitGradientStop];
+            [list unionColorStorage:storage];
+        }
+    }
+    
+    // we have a stroke color
+    if([self matchesTraits:IJSVGLayerTraitStroked] == YES) {
+        IJSVGStrokeLayer* strokeLayer = nil;
+        if((strokeLayer = (IJSVGStrokeLayer*)[self layerForUsageType:IJSVGLayerUsageTypeStrokeGeneric]) != nil) {
+            CGColorRef colorRef = NULL;
+            if((colorRef = strokeLayer.strokeColor) != NULL) {
+                NSColor* nsColor = [NSColor colorWithCGColor:colorRef];
+                IJSVGTraitedColor* color = [IJSVGTraitedColor colorWithColor:nsColor
+                                                                     traits:IJSVGColorUsageTraitStroke];
+                [list addColor:color];
+            }
+        }
+        
+        // patterns
+        if((strokeLayer = (IJSVGStrokeLayer*)[self layerForUsageType:IJSVGLayerUsageTypeStrokePattern]) != nil) {
+            IJSVGTraitedColorStorage* storage = strokeLayer.colors;
+            [storage addTraits:IJSVGColorUsageTraitFill];
+            [list unionColorStorage:storage];
+        }
+        
+        // gradients
+        if((strokeLayer = (IJSVGStrokeLayer*)[self layerForUsageType:IJSVGLayerUsageTypeStrokeGradient]) != nil) {
+            IJSVGTraitedColorStorage* storage = strokeLayer.colors;
+            [storage addTraits:IJSVGColorUsageTraitGradientStop];
+            [list unionColorStorage:storage];
+        }
+    }
+    return list;
+}
+
@end
@@ -6,7 +6,7 @@
 //  Copyright © 2017 Curtis Hard. All rights reserved.
 //

-#import "IJSVGShapeLayer.h"
+#import <IJSVG/IJSVGShapeLayer.h>

@interface IJSVGStrokeLayer : IJSVGShapeLayer

@@ -6,15 +6,8 @@
 //  Copyright © 2017 Curtis Hard. All rights reserved.
 //

-#import "IJSVGStrokeLayer.h"
+#import <IJSVG/IJSVGStrokeLayer.h>

@implementation IJSVGStrokeLayer

- (CGRect)outerBoundingBox
-{
-    return CGRectMake(-self.lineWidth / 2.f, -self.lineWidth / 2.f,
-                      self.boundingBox.size.width + self.lineWidth,
-                      self.boundingBox.size.height + self.lineWidth);
-}
-
@end
@@ -0,0 +1,17 @@
+//
+//  IJSVGTileLayer.h
+//  IJSVG
+//
+//  Created by Curtis Hard on 29/06/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import <QuartzCore/QuartzCore.h>
+#import <IJSVG/IJSVGLayer.h>
+
+@interface IJSVGTileLayer : CATiledLayer <IJSVGDrawableLayer> {
+@private
+    NSMapTable<NSNumber*, CALayer<IJSVGDrawableLayer>*>* _layerUsageMapTable;
+}
+
+@end
@@ -0,0 +1,150 @@
+//
+//  IJSVGTileLayer.m
+//  IJSVG
+//
+//  Created by Curtis Hard on 29/06/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import "IJSVGTileLayer.h"
+
+@implementation IJSVGTileLayer
+
+@synthesize clipLayers;
+@synthesize backingScaleFactor;
+@synthesize renderQuality;
+@synthesize requiresBackingScale;
+@synthesize maskLayer = _maskLayer;
+@synthesize fillRule = _fillRule;
+@synthesize clipRule = _clipRule;
+@synthesize absoluteFrame;
+@synthesize boundingBox;
+@synthesize outerBoundingBox;
+@synthesize filter = _filter;
+@synthesize innerBoundingBox;
+@synthesize maskingBoundingBox;
+@synthesize maskingClippingRect;
+@synthesize clippingBoundingBox;
+@synthesize clippingTransform;
+@synthesize layerTraits = _layerTraits;
+@synthesize clipPath = _clipPath;
+@synthesize clipPathTransform;
+@synthesize referencingLayer = _referencingLayer;
+@synthesize absoluteOrigin;
+@synthesize blendingMode;
+@synthesize colors;
+
+- (void)dealloc
+{
+    if(_clipPath != NULL) {
+        CGPathRelease(_clipPath);
+    }
+}
+
+- (id<CAAction>)actionForKey:(NSString*)event
+{
+    return nil;
+}
+
+- (CALayer<IJSVGDrawableLayer> *)referencedLayer
+{
+    return self.sublayers.firstObject;
+}
+
+- (CALayer<IJSVGDrawableLayer> *)referencingLayer
+{
+    return _referencingLayer ?: self.superlayer;
+}
+
+- (void)renderInContext:(CGContextRef)ctx
+{
+    [IJSVGLayer renderLayer:self
+                  inContext:ctx
+                    options:IJSVGLayerDrawingOptionNone];
+}
+
+- (void)performRenderInContext:(CGContextRef)ctx
+{
+    [super renderInContext:ctx];
+}
+
+- (NSArray<CALayer<IJSVGDrawableLayer>*>*)debugLayers
+{
+    return self.sublayers;
+}
+
+- (void)setClipPath:(CGPathRef)clipPath
+{
+    if(_clipPath != NULL) {
+        CGPathRelease(_clipPath);
+    }
+    _clipPath = CGPathRetain(clipPath);
+}
+
+- (NSMapTable<NSNumber*,CALayer<IJSVGDrawableLayer>*>*)layerUsageMapTable
+{
+    if(_layerUsageMapTable == nil) {
+        _layerUsageMapTable = IJSVGLayerDefaultUsageMapTable();
+    }
+    return _layerUsageMapTable;
+}
+
+- (CALayer<IJSVGDrawableLayer>*)layerForUsageType:(IJSVGLayerUsageType)type
+{
+    return [self.layerUsageMapTable objectForKey:@(type)];
+}
+
+- (CALayer<IJSVGDrawableLayer>*)strokeLayer:(IJSVGLayerUsageType*)usageType
+{
+    CALayer<IJSVGDrawableLayer>* layer = nil;
+    if((layer = [self layerForUsageType:IJSVGLayerUsageTypeStrokeGeneric]) != nil) {
+        *usageType = IJSVGLayerUsageTypeStrokeGeneric;
+        return layer;
+    }
+    
+    if((layer = [self layerForUsageType:IJSVGLayerUsageTypeStrokeGradient]) != nil) {
+        *usageType = IJSVGLayerUsageTypeStrokeGradient;
+        return layer;
+    }
+    
+    if((layer = [self layerForUsageType:IJSVGLayerUsageTypeStrokePattern]) != nil) {
+        *usageType = IJSVGLayerUsageTypeStrokePattern;
+        return layer;
+    }
+    return nil;
+}
+
+- (void)setLayer:(CALayer<IJSVGDrawableLayer>*)layer
+    forUsageType:(IJSVGLayerUsageType)type
+{
+    [self.layerUsageMapTable setObject:layer
+                                forKey:@(type)];
+}
+
+- (void)addTraits:(IJSVGLayerTraits)traits
+{
+    _layerTraits |= traits;
+}
+
+- (void)removeTraits:(IJSVGLayerTraits)traits
+{
+    _layerTraits = _layerTraits & ~traits;
+}
+
+- (BOOL)matchesTraits:(IJSVGLayerTraits)traits
+{
+    return (_layerTraits & traits) == traits;
+}
+
+- (BOOL)treatImplicitOriginAsTransform
+{
+    return YES;
+}
+
+- (CALayer<IJSVGDrawableLayer>*)firstSublayerOfClass:(Class)aClass
+{
+    return [IJSVGLayer firstSublayerOfClass:aClass
+                                  fromLayer:self];
+}
+
+@end
@@ -9,13 +9,9 @@
 #import <QuartzCore/QuartzCore.h>
 #import <IJSVG/IJSVGLayer.h>

-@interface IJSVGTransformLayer : CATransformLayer <IJSVGDrawableLayer>
-
-@property (nonatomic, assign) CGBlendMode blendingMode;
-@property (nonatomic, retain) CALayer<IJSVGDrawableLayer>* clipLayer;
-@property (nonatomic, readonly) CGPoint absoluteOrigin;
-@property (nonatomic, readonly) CGRect computedFrame;
-@property (nonatomic, readonly) CALayer<IJSVGDrawableLayer>* referencedLayer;
-@property (nonatomic, assign) CALayer<IJSVGDrawableLayer>* referencingLayer;
+@interface IJSVGTransformLayer : CATransformLayer <IJSVGDrawableLayer> {
+@private
+    NSMapTable<NSNumber*, CALayer<IJSVGDrawableLayer>*>* _layerUsageMapTable;
+}

@end
@@ -6,29 +6,45 @@
 //  Copyright © 2022 Curtis Hard. All rights reserved.
 //

-#import "IJSVGTransformLayer.h"
+#import <IJSVG/IJSVGTransformLayer.h>
+#import <IJSVG/IJSVGTraitedColorStorage.h>

@implementation IJSVGTransformLayer

+@synthesize clipLayers;
@synthesize backingScaleFactor;
@synthesize renderQuality;
-@synthesize requiresBackingScaleHelp;
+@synthesize requiresBackingScale;
@synthesize maskLayer = _maskLayer;
@synthesize fillRule = _fillRule;
@synthesize clipRule = _clipRule;
@synthesize absoluteFrame;
@synthesize boundingBox;
-@synthesize boundingBoxBounds;
-@synthesize strokeBoundingBox;
@synthesize outerBoundingBox;
+@synthesize filter = _filter;
+@synthesize innerBoundingBox;
+@synthesize maskingBoundingBox;
+@synthesize maskingClippingRect;
+@synthesize clippingBoundingBox;
+@synthesize clippingTransform;
+@synthesize layerTraits = _layerTraits;
+@synthesize clipPath = _clipPath;
+@synthesize clipPathTransform;
+@synthesize colors;
+@synthesize absoluteOrigin;
+@synthesize blendingMode;
+@synthesize referencingLayer = _referencingLayer;

 - (void)dealloc
 {
-    (void)[_maskLayer release], _maskLayer = nil;
-    (void)[_fillRule release], _fillRule = nil;
-    (void)[_clipRule release], _clipRule = nil;
-    (void)[_clipLayer release], _clipLayer = nil;
-    [super dealloc];
+    if(_clipPath != NULL) {
+        CGPathRelease(_clipPath);
+    }
+}
+
+- (id<CAAction>)actionForKey:(NSString*)event
+{
+    return nil;
 }

 - (CALayer<IJSVGDrawableLayer> *)referencedLayer
@@ -36,24 +52,16 @@
    return self.sublayers.firstObject;
 }

- (CALayer<IJSVGDrawableLayer> *)referencingLayer {
+- (CALayer<IJSVGDrawableLayer> *)referencingLayer
+{
    return _referencingLayer ?: self.superlayer;
 }

- (CALayer<IJSVGDrawableLayer>*)rootLayer
-{
-    return [IJSVGLayer rootLayerForLayer:self];
-}
-
- (BOOL)requiresBackingScaleHelp
-{
-    return YES;
-}
-
 - (void)renderInContext:(CGContextRef)ctx
 {
    [IJSVGLayer renderLayer:self
-                  inContext:ctx];
+                  inContext:ctx
+                    options:IJSVGLayerDrawingOptionNone];
 }

 - (void)performRenderInContext:(CGContextRef)ctx
@@ -66,4 +74,87 @@
    return self.sublayers;
 }

+- (void)setClipPath:(CGPathRef)clipPath
+{
+    if(_clipPath != NULL) {
+        CGPathRelease(_clipPath);
+    }
+    _clipPath = CGPathRetain(clipPath);
+}
+
+- (NSMapTable<NSNumber*,CALayer<IJSVGDrawableLayer>*>*)layerUsageMapTable
+{
+    if(_layerUsageMapTable == nil) {
+        _layerUsageMapTable = IJSVGLayerDefaultUsageMapTable();
+    }
+    return _layerUsageMapTable;
+}
+
+- (CALayer<IJSVGDrawableLayer>*)layerForUsageType:(IJSVGLayerUsageType)type
+{
+    return [self.layerUsageMapTable objectForKey:@(type)];
+}
+
+- (CALayer<IJSVGDrawableLayer>*)strokeLayer:(IJSVGLayerUsageType*)usageType
+{
+    CALayer<IJSVGDrawableLayer>* layer = nil;
+    if((layer = [self layerForUsageType:IJSVGLayerUsageTypeStrokeGeneric]) != nil) {
+        *usageType = IJSVGLayerUsageTypeStrokeGeneric;
+        return layer;
+    }
+    
+    if((layer = [self layerForUsageType:IJSVGLayerUsageTypeStrokeGradient]) != nil) {
+        *usageType = IJSVGLayerUsageTypeStrokeGradient;
+        return layer;
+    }
+    
+    if((layer = [self layerForUsageType:IJSVGLayerUsageTypeStrokePattern]) != nil) {
+        *usageType = IJSVGLayerUsageTypeStrokePattern;
+        return layer;
+    }
+    return nil;
+}
+
+- (void)setLayer:(CALayer<IJSVGDrawableLayer>*)layer
+    forUsageType:(IJSVGLayerUsageType)type
+{
+    [self.layerUsageMapTable setObject:layer
+                                forKey:@(type)];
+}
+
+- (void)addTraits:(IJSVGLayerTraits)traits
+{
+    _layerTraits |= traits;
+}
+
+- (void)removeTraits:(IJSVGLayerTraits)traits
+{
+    _layerTraits = _layerTraits & ~traits;
+}
+
+- (BOOL)matchesTraits:(IJSVGLayerTraits)traits
+{
+    return (_layerTraits & traits) == traits;
+}
+
+- (BOOL)treatImplicitOriginAsTransform
+{
+    return YES;
+}
+
+- (CALayer<IJSVGDrawableLayer>*)firstSublayerOfClass:(Class)aClass
+{
+    return [IJSVGLayer firstSublayerOfClass:aClass
+                                  fromLayer:self];
+}
+
+- (IJSVGTraitedColorStorage*)colors
+{
+    IJSVGTraitedColorStorage* colorList = [[IJSVGTraitedColorStorage alloc] init];
+    for(CALayer<IJSVGDrawableLayer>* layer in self.sublayers) {
+        [colorList unionColorStorage:layer.colors];
+    }
+    return colorList;
+}
+
@end
@@ -0,0 +1,13 @@
+//
+//  IJSVGFilterEffectGaussianBlur.h
+//  IJSVG
+//
+//  Created by Curtis Hard on 18/04/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import <IJSVG/IJSVGFilterEffect.h>
+
+@interface IJSVGFilterEffectGaussianBlur : IJSVGFilterEffect
+
+@end
@@ -0,0 +1,36 @@
+//
+//  IJSVGFilterEffectGaussianBlur.m
+//  IJSVG
+//
+//  Created by Curtis Hard on 18/04/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import <IJSVG/IJSVGFilterEffectGaussianBlur.h>
+#import <IJSVG/IJSVGThreadManager.h>
+
+@implementation IJSVGFilterEffectGaussianBlur
+
+ (CIFilter*)sharedFilter
+{
+    IJSVGThreadManager* manager = IJSVGThreadManager.currentManager;
+    NSString* key = @"CIFilterGaussianBlur";
+    CIFilter* filter = nil;
+    if((filter = [manager userInfoObjectForKey:key]) == nil) {
+        filter = [CIFilter filterWithName:@"CIGaussianBlur"];
+        [manager setUserInfoObject:filter
+                            forKey:key];
+    }
+    return filter;
+}
+
+- (CIImage*)processImage:(CIImage*)image
+{
+    CIFilter* filter = [self.class sharedFilter];
+    [filter setDefaults];
+    [filter setValue:image forKey:kCIInputImageKey];
+    [filter setValue:@(self.stdDeviation.value) forKey:kCIInputRadiusKey];
+    return [filter valueForKey:kCIOutputImageKey];
+}
+
+@end
@@ -0,0 +1,16 @@
+//
+//  IJSVGClipPath.h
+//  IJSVG
+//
+//  Created by Curtis Hard on 29/05/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import <IJSVG/IJSVGGroup.h>
+
+@interface IJSVGClipPath : IJSVGGroup {
+}
+
+@property (nonatomic, readonly) IJSVGWindingRule computedClipRule;
+
+@end
@@ -0,0 +1,75 @@
+//
+//  IJSVGClipPath.m
+//  IJSVG
+//
+//  Created by Curtis Hard on 29/05/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import <IJSVG/IJSVGClipPath.h>
+#import <IJSVG/IJSVGRootNode.h>
+
+@implementation IJSVGClipPath
+
+- (void)setDefaults
+{
+    self.units = IJSVGUnitObjectBoundingBox;
+    self.contentUnits = IJSVGUnitUserSpaceOnUse;
+    self.windingRule = IJSVGWindingRuleNonZero;
+    self.overflowVisibility = IJSVGOverflowVisibilityHidden;
+    self.fill = [IJSVGColorNode colorNodeWithColor:NSColor.whiteColor];
+}
+
+- (IJSVGUnitType)contentUnitsWithReferencingNodeBounds:(CGRect*)bounds
+{
+    IJSVGNode* node = nil;
+    IJSVGUnitType units = [self contentUnitsWithReferencingNode:&node];
+    if(units == IJSVGUnitUserSpaceOnUse) {
+        *bounds = node.rootNode.bounds;
+    } else {
+        *bounds = node.parentNode.bounds;
+    }
+    return units;
+}
+
+- (void)postProcess
+{
+    // clip paths only allow shapes in them, nothing else, we can simply
+    // check the node types for the trait of pathed
+    IJSVGNodeTraits childTraits = IJSVGNodeTraitPathed;
+    for(IJSVGNode* childNode in self.children.copy) {
+        if([childNode matchesTraits:childTraits] == NO) {
+            BOOL remove = YES;
+            IJSVGNodeType type = childNode.type;
+            if(type == IJSVGNodeTypeUse) {
+                remove = [(IJSVGGroup*)childNode childrenMatchTraits:childTraits] == NO;
+            }
+            if(remove == YES) {
+                [self removeChild:childNode];
+            }
+        }
+    }
+}
+
+- (IJSVGWindingRule)computedClipRule
+{
+    // find the first use of a clipRule that is useful
+    __block IJSVGWindingRule rule = IJSVGWindingRuleInherit;
+    __weak IJSVGClipPath* weakSelf = self;
+    IJSVGNodeWalkHandler handler = ^(IJSVGNode *node, BOOL *allowChildNodes,
+                                     BOOL *stop) {
+        if(node == weakSelf) {
+            return;
+        }
+        IJSVGWindingRule clipRule = node.clipRule;
+        if(clipRule != IJSVGWindingRuleInherit) {
+            rule = clipRule;
+            *stop = YES;
+        }
+    };
+    [IJSVGNode walkNodeTree:self
+                    handler:handler];
+    return rule;
+}
+
+@end
@@ -12,7 +12,8 @@
    
 }

-@property (nonatomic, retain) NSColor* color;
+@property (nonatomic, strong) NSColor* color;
+@property (nonatomic, assign) BOOL isNoneOrTransparent;

 + (IJSVGNode*)colorNodeWithColor:(NSColor*)color;

@@ -6,19 +6,13 @@
 //  Copyright © 2022 Curtis Hard. All rights reserved.
 //

-#import "IJSVGColorNode.h"
+#import <IJSVG/IJSVGColorNode.h>

@implementation IJSVGColorNode

- (void)dealloc
-{
-    (void)[_color release], _color = nil;
-    [super dealloc];
-}
-
 + (IJSVGNode*)colorNodeWithColor:(NSColor *)color
 {
-    return [[[self alloc] initWithColor:color] autorelease];
+    return [[self alloc] initWithColor:color];
 }

 - (id)initWithColor:(NSColor*)color {
@@ -1,21 +0,0 @@
-//
-//  IJSVGDef.h
-//  IJSVGExample
-//
-//  Created by Curtis Hard on 03/09/2014.
-//  Copyright (c) 2014 Curtis Hard. All rights reserved.
-//
-
-#import <IJSVG/IJSVGNode.h>
-#import <Foundation/Foundation.h>
-
-@interface IJSVGDef : NSObject {
-
-@private
-    NSMutableDictionary* _dict;
-}
-
- (void)addDef:(IJSVGNode*)aDef;
- (IJSVGDef*)defForID:(NSString*)anID;
-
-@end
@@ -1,40 +0,0 @@
-//
-//  IJSVGDef.m
-//  IJSVGExample
-//
-//  Created by Curtis Hard on 03/09/2014.
-//  Copyright (c) 2014 Curtis Hard. All rights reserved.
-//
-
-#import "IJSVGDef.h"
-
-@implementation IJSVGDef
-
- (void)dealloc
-{
-    (void)([_dict release]), _dict = nil;
-    [super dealloc];
-}
-
- (id)init
-{
-    if ((self = [super init]) != nil) {
-        _dict = [[NSMutableDictionary alloc] init];
-    }
-    return self;
-}
-
- (void)addDef:(IJSVGNode*)aDef
-{
-    if (aDef.identifier == nil) {
-        return;
-    }
-    _dict[aDef.identifier] = aDef;
-}
-
- (IJSVGDef*)defForID:(NSString*)anID
-{
-    return _dict[anID];
-}
-
-@end
@@ -0,0 +1,19 @@
+//
+//  IJSVGFilter.h
+//  IJSVG
+//
+//  Created by Curtis Hard on 18/04/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import <IJSVG/IJSVGGroup.h>
+#import <IJSVG/IJSVGLayer.h>
+
+@interface IJSVGFilter : IJSVGGroup
+
+- (CGImageRef)newImageByApplyFilterToLayer:(CALayer<IJSVGDrawableLayer>*)layer
+                                     scale:(CGFloat)scale;
+
+@property (nonatomic, readonly) BOOL valid;
+
+@end
@@ -0,0 +1,57 @@
+//
+//  IJSVGFilter.m
+//  IJSVG
+//
+//  Created by Curtis Hard on 18/04/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import <IJSVG/IJSVGFilter.h>
+#import <IJSVG/IJSVGFilterEffect.h>
+#import <IJSVG/IJSVGLayer.h>
+#import <IJSVG/IJSVGThreadManager.h>
+
+@implementation IJSVGFilter
+
+- (BOOL)valid
+{
+    return self.children.count != 0;
+}
+
+- (CGImageRef)newImageByApplyFilterToLayer:(CALayer<IJSVGDrawableLayer>*)layer
+                                     scale:(CGFloat)scale
+{
+    IJSVGFilter* filter = layer.filter;
+    layer.filter = nil;
+    CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
+    uint32_t info = kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Little;
+    CGImageRef originalImage = [IJSVGLayer newImageForLayer:layer
+                                                    options:IJSVGLayerDrawingOptionNone
+                                                 colorSpace:colorSpace
+                                                 bitmapInfo:info
+                                                      scale:scale];
+    CIImage* image = [CIImage imageWithCGImage:originalImage];
+    CGColorSpaceRelease(colorSpace);
+    CGImageRelease(originalImage);
+    
+    for(IJSVGFilterEffect* effect in self.children) {
+        image = [effect processImage:image];
+    }
+    
+    IJSVGThreadManager* manager = IJSVGThreadManager.currentManager;
+    CIContext* context = manager.CIContext;
+    CGImageRef outputImage = [context createCGImage:image
+                                           fromRect:image.extent];
+    layer.filter = filter;
+    return outputImage;
+}
+
+- (void)addChild:(IJSVGNode*)child
+{
+    if([child isKindOfClass:IJSVGFilterEffect.class] == NO) {
+        return;
+    }
+    [super addChild:child];
+}
+
+@end
@@ -0,0 +1,40 @@
+//
+//  IJSVGFilterEffect.h
+//  IJSVG
+//
+//  Created by Curtis Hard on 18/04/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import <IJSVG/IJSVGGroup.h>
+
+typedef NS_ENUM(NSInteger, IJSVGFilterEffectSource) {
+    IJSVGFilterEffectSourceGraphic,
+    IJSVGFilterEffectSourceAlpha,
+    IJSVGFilterEffectSourceBackgroundImage,
+    IJSVGFilterEffectSourceBackgroundAlpha,
+    IJSVGFilterEffectSourceFillPaint,
+    IJSVGFilterEffectSourceStrokePaint,
+    IJSVGFilterEffectSourcePrimitiveReference,
+};
+
+typedef NS_ENUM(NSInteger, IJSVGFilterEffectEdgeMode) {
+    IJSVGFilterEffectEdgeModeNone,
+    IJSVGFilterEffectEdgeModeWrap,
+    IJSVGFilterEffectEdgeModeDuplicate,
+};
+
+@interface IJSVGFilterEffect : IJSVGGroup
+
+@property (nonatomic, assign) IJSVGFilterEffectSource source;
+@property (nonatomic, strong) IJSVGUnitLength* stdDeviation;
+@property (nonatomic, assign) IJSVGFilterEffectEdgeMode edgeMode;
+@property (nonatomic, copy) NSString* primitiveReference;
+
+ (Class)effectClassForElementName:(NSString*)name;
+ (IJSVGFilterEffectSource)sourceForString:(NSString*)string;
+ (IJSVGFilterEffectEdgeMode)edgeModeForString:(NSString*)string;
+
+- (CIImage*)processImage:(CIImage*)image;
+
+@end
@@ -0,0 +1,79 @@
+//
+//  IJSVGFilterEffect.m
+//  IJSVG
+//
+//  Created by Curtis Hard on 18/04/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import <IJSVG/IJSVGFilterEffect.h>
+#import <IJSVG/IJSVGFilterEffectGaussianBlur.h>
+
+@implementation IJSVGFilterEffect
+
+static NSDictionary<NSString*, Class>* _elementClassMap = nil;
+
+ (void)load
+{
+    _elementClassMap = @{
+        @"fegaussianblur": IJSVGFilterEffectGaussianBlur.class
+    };
+}
+
+ (Class)effectClassForElementName:(NSString*)name
+{
+    NSString* key = name.lowercaseString;
+    return _elementClassMap[key] ?: IJSVGFilterEffect.class;
+}
+
+ (IJSVGFilterEffectSource)sourceForString:(NSString*)string
+{
+    const char* name = string.lowercaseString.UTF8String;
+    if(name == NULL) {
+        return IJSVGFilterEffectSourceGraphic;
+    }
+    if(strcmp(name, "sourcegraphic") == 0) {
+        return IJSVGFilterEffectSourceGraphic;
+    }
+    if(strcmp(name, "sourcealpha") == 0) {
+        return IJSVGFilterEffectSourceAlpha;
+    }
+    if(strcmp(name, "backgroundimage") == 0) {
+        return IJSVGFilterEffectSourceBackgroundImage;
+    }
+    if(strcmp(name, "backgroundalpha") == 0) {
+        return IJSVGFilterEffectSourceBackgroundAlpha;
+    }
+    if(strcmp(name, "fillpaint") == 0) {
+        return IJSVGFilterEffectSourceFillPaint;
+    }
+    if(strcmp(name, "strokepain") == 0) {
+        return IJSVGFilterEffectSourceStrokePaint;
+    }
+    return IJSVGFilterEffectSourcePrimitiveReference;
+}
+
+ (IJSVGFilterEffectEdgeMode)edgeModeForString:(NSString*)string
+{
+    const char* name = string.lowercaseString.UTF8String;
+    if(name == NULL) {
+        return IJSVGFilterEffectEdgeModeNone;
+    }
+    if(strcmp(name, "none") == 0) {
+        return IJSVGFilterEffectEdgeModeNone;
+    }
+    if(strcmp(name, "wrap") == 0) {
+        return IJSVGFilterEffectEdgeModeWrap;
+    }
+    if(strcmp(name, "duplicate") == 0) {
+        return IJSVGFilterEffectEdgeModeDuplicate;
+    }
+    return IJSVGFilterEffectEdgeModeNone;
+}
+
+- (CIImage*)processImage:(CIImage*)image
+{
+    return image;
+}
+
+@end
@@ -6,14 +6,8 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGForeignObject.h"
+#import <IJSVG/IJSVGForeignObject.h>

@implementation IJSVGForeignObject

- (void)dealloc
-{
-    (void)([_requiredExtension release]), _requiredExtension = nil;
-    [super dealloc];
-}
-
@end
@@ -7,35 +7,27 @@
 //

 #import <Foundation/Foundation.h>
-#import <IJSVG/IJSVGColorList.h>
-#import <IJSVG/IJSVGDef.h>
+#import <IJSVG/IJSVGTraitedColorStorage.h>
 #import <IJSVG/IJSVGTransform.h>
 #import <IJSVG/IJSVGGroup.h>

@interface IJSVGGradient : IJSVGGroup

-@property (nonatomic, retain) NSGradient* gradient;
+@property (nonatomic, strong) NSArray<NSColor*>* colors;
+@property (nonatomic, assign) CGFloat* locations;
+@property (nonatomic, assign) NSUInteger numberOfStops;
@property (nonatomic, assign) CGGradientRef CGGradient;
-@property (nonatomic, retain) IJSVGUnitLength* x1;
-@property (nonatomic, retain) IJSVGUnitLength* x2;
-@property (nonatomic, retain) IJSVGUnitLength* y1;
-@property (nonatomic, retain) IJSVGUnitLength* y2;
-@property (nonatomic, retain) IJSVGColorList* colorList;
+@property (nonatomic, strong) IJSVGUnitLength* x1;
+@property (nonatomic, strong) IJSVGUnitLength* x2;
+@property (nonatomic, strong) IJSVGUnitLength* y1;
+@property (nonatomic, strong) IJSVGUnitLength* y2;

 + (CGFloat*)computeColorStops:(IJSVGGradient*)gradient
                       colors:(NSArray**)someColors;

 - (CGGradientRef)CGGradient;
 - (void)drawInContextRef:(CGContextRef)ctx
-              objectRect:(NSRect)objectRect
-       absoluteTransform:(CGAffineTransform)absoluteTransform
-                viewPort:(CGRect)viewBox;
-
- (void)_debugStart:(CGPoint)startPoint
-                end:(CGPoint)endPoint
-            context:(CGContextRef)ctx;
-
- (IJSVGColorList*)colorList;
- (IJSVGColorList*)computedColorList;
+                  bounds:(NSRect)objectRect
+               transform:(CGAffineTransform)absoluteTransform;

@end
@@ -6,49 +6,55 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGGradient.h"
-#import "IJSVGParser.h"
+#import <IJSVG/IJSVGGradient.h>
+#import <IJSVG/IJSVGParser.h>

@implementation IJSVGGradient

-@synthesize colorList = _privateColorList;
-
 - (void)dealloc
 {
-    (void)([_x1 release]), _x1 = nil;
-    (void)([_x2 release]), _x2 = nil;
-    (void)([_y1 release]), _y1 = nil;
-    (void)([_y2 release]), _y2 = nil;
-    (void)([_gradient release]), _gradient = nil;
-    (void)([_privateColorList release]), _privateColorList = nil;
-    if (_CGGradient != nil) {
-        CGGradientRelease(_CGGradient);
+    if(_locations != NULL) {
+        (void)free(_locations), _locations = NULL;
+    }
+    if(_CGGradient != NULL) {
+        (void)CGGradientRelease(_CGGradient), _CGGradient = NULL;
    }
-    [super dealloc];
 }

 - (id)copyWithZone:(NSZone*)zone
 {
-    IJSVGGradient* clone = [super copyWithZone:zone];
-    clone.gradient = [[self.gradient copy] autorelease];
+    IJSVGGradient* clone = [[self.class alloc] init];
+    [clone applyPropertiesFromNode:self];
    return clone;
 }

- (void)setColorList:(IJSVGColorList*)list
+- (void)applyPropertiesFromNode:(IJSVGGradient*)node
 {
-    (void)([_privateColorList release]), _privateColorList = nil;
-    _privateColorList = list.retain;
-    if (_CGGradient != nil) {
-        CGGradientRelease(_CGGradient);
-        _CGGradient = nil;
-    }
+    [super applyPropertiesFromNode:node];
+    self.numberOfStops = node.numberOfStops;
+    self.colors = node.colors.copy;
+    size_t length = sizeof(CGFloat)*node.numberOfStops;
+    self.locations = (CGFloat*)malloc(length);
+    memcpy(self.locations, node.locations, length);
+    self.x1 = node.x1.copy;
+    self.x2 = node.x2.copy;
+    self.y1 = node.y1.copy;
+    self.y2 = node.y2.copy;
 }

-+ (CGFloat *)computeColorStops:(IJSVGGradient*)gradient
-                        colors:(NSArray**)someColors
+- (void)setLocations:(CGFloat*)locations
+{
+    if(_locations != NULL) {
+        (void)free(_locations), _locations = NULL;
+    }
+    _locations = locations;
+}
+
+ (CGFloat*)computeColorStops:(IJSVGGradient*)gradient
+                       colors:(NSArray**)someColors
 {
    NSArray<IJSVGNode*>* stops = gradient.children;
-    NSMutableArray* colors = [[[NSMutableArray alloc] initWithCapacity:stops.count] autorelease];
+    NSMutableArray* colors = [[NSMutableArray alloc] initWithCapacity:stops.count];
    CGFloat* stopsParams = (CGFloat*)malloc(stops.count * sizeof(CGFloat));
    
    NSInteger i = 0;
@@ -70,73 +76,30 @@
    return stopsParams;
 }

- (IJSVGColorList*)colorList
-{
-    IJSVGColorList* sheet = [[[IJSVGColorList alloc] init] autorelease];
-    NSInteger num = self.gradient.numberOfColorStops;
-    for (NSInteger i = 0; i < num; i++) {
-        NSColor* color;
-        [self.gradient getColor:&color
-                       location:nil
-                        atIndex:i];
-        IJSVGColorType* type = [IJSVGColorType typeWithColor:color
-                                                        flags:IJSVGColorTypeFlagStop];
-        [sheet addColor:type];
-    }
-    return sheet;
-}
-
- (IJSVGColorList*)computedColorList
-{
-    return _privateColorList;
-}
-
 - (CGGradientRef)CGGradient
 {
    // store it in the cache
-    if (_CGGradient != nil) {
+    if(_CGGradient != nil) {
        return _CGGradient;
    }

    // actually create the gradient
-    NSInteger num = self.gradient.numberOfColorStops;
-    CGFloat* locations = (CGFloat*)malloc(sizeof(CGFloat) * num);
+    NSInteger num = self.numberOfStops;
    CFMutableArrayRef colors = CFArrayCreateMutable(kCFAllocatorDefault, (CFIndex)num,
        &kCFTypeArrayCallBacks);
-    for (NSInteger i = 0; i < num; i++) {
-        NSColor* color;
-        [self.gradient getColor:&color
-                       location:&locations[i]
-                        atIndex:i];
-        if (_privateColorList != nil) {
-            color = [_privateColorList proposedColorForColor:color];
-        }
+    for (NSColor* color in _colors) {
        CFArrayAppendValue(colors, color.CGColor);
    }
-    CGGradientRef result = CGGradientCreateWithColors(_gradient.colorSpace.CGColorSpace,
-        colors, locations);
+    CGGradientRef result = CGGradientCreateWithColors(IJSVGColor.defaultColorSpace.CGColorSpace,
+        colors, _locations);
    CFRelease(colors);
-    free(locations);
    return _CGGradient = result;
 }

 - (void)drawInContextRef:(CGContextRef)ctx
-              objectRect:(NSRect)objectRect
-       absoluteTransform:(CGAffineTransform)absoluteTransform
-                viewPort:(CGRect)viewBox
+                  bounds:(NSRect)objectRect
+               transform:(CGAffineTransform)absoluteTransform
 {
 }

- (void)_debugStart:(CGPoint)startPoint
-                end:(CGPoint)endPoint
-            context:(CGContextRef)ctx
-{
-    CGContextSaveGState(ctx);
-    CGContextSetStrokeColorWithColor(ctx, NSColor.blackColor.CGColor);
-    CGContextSetLineWidth(ctx, 1.f);
-    CGContextMoveToPoint(ctx, startPoint.x, startPoint.y);
-    CGContextAddLineToPoint(ctx, endPoint.x, endPoint.y);
-    CGContextStrokePath(ctx);
-}
-
@end
@@ -16,8 +16,15 @@
    NSMutableArray<IJSVGNode*>* _children;
 }

-@property (nonatomic, readonly) NSArray<IJSVGNode*>* children;
+@property (weak, nonatomic, readonly) NSArray<IJSVGNode*>* children;

 - (void)addChild:(IJSVGNode*)child;
+- (void)addChildren:(NSArray<IJSVGNode*>*)children;
+- (void)removeChild:(IJSVGNode*)child;
+- (void)removeChildren:(NSArray<IJSVGNode*>*)children;
+- (BOOL)childrenMatchTraits:(IJSVGNodeTraits)traits;
+- (BOOL)containsNodesMatchingTraits:(IJSVGNodeTraits)traits;
+- (NSArray<IJSVGNode*>*)nodesMatchingTraits:(IJSVGNodeTraits)traits;
+- (NSSet<IJSVGNode*>*)childrenOfType:(IJSVGNodeType)type;

@end
@@ -6,19 +6,13 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGGroup.h"
+#import <IJSVG/IJSVGGroup.h>

@implementation IJSVGGroup

- (void)dealloc
-{
-    (void)([_children release]), _children = nil;
-    [super dealloc];
-}
-
 - (id)init
 {
-    if ((self = [super init]) != nil) {
+    if((self = [super init]) != nil) {
        _children = [[NSMutableArray alloc] init];
    }
    return self;
@@ -27,7 +21,7 @@
 - (void)prepareFromCopy
 {
    if(_children != nil) {
-        (void)[_children release], _children = nil;
+        (void)_children, _children = nil;
    }
    _children = [[NSMutableArray alloc] init];
 }
@@ -37,8 +31,8 @@
    IJSVGGroup* node = [super copyWithZone:zone];
    [node prepareFromCopy];

-    for (IJSVGNode* childNode in _children) {
-        childNode = [[childNode copy] autorelease];
+    for (__strong IJSVGNode* childNode in _children) {
+        childNode = childNode.copy;
        childNode.parentNode = node;
        [node addChild:childNode];
    }
@@ -47,7 +41,8 @@

 - (void)addChild:(IJSVGNode*)child
 {
-    if(child == nil || (child.parentNode == self && [_children containsObject:child])) {
+    if(child == nil || child == self ||
+       (child.parentNode == self && [_children containsObject:child])) {
        return;
    }
    child.parentNode = self;
@@ -62,11 +57,62 @@
    [_children removeObject:child];
 }

+- (void)addChildren:(NSArray<IJSVGNode*>*)children
+{
+    for(IJSVGNode* node in children) {
+        [self addChild:node];
+    }
+}
+
+- (void)removeChildren:(NSArray<IJSVGNode*>*)children
+{
+    for(IJSVGNode* node in children) {
+        [self removeChild:node];
+    }
+}
+
+- (BOOL)childrenMatchTraits:(IJSVGNodeTraits)traits
+{
+    for(IJSVGNode* node in _children) {
+        if([node matchesTraits:traits] == NO) {
+            return NO;
+        }
+    }
+    return YES;
+}
+
+- (NSSet<IJSVGNode*>*)childrenOfType:(IJSVGNodeType)type
+{
+    NSMutableSet<IJSVGNode*>* nodes = [[NSMutableSet alloc] init];
+    for(IJSVGNode* node in self.children) {
+        if(node.type == type) {
+            [nodes addObject:node];
+        }
+    }
+    return nodes;
+}
+
+- (BOOL)containsNodesMatchingTraits:(IJSVGNodeTraits)traits
+{
+    return [self.class node:self
+containsNodesMatchingTraits:traits];
+}
+
+- (NSArray<IJSVGNode*>*)nodesMatchingTraits:(IJSVGNodeTraits)traits
+{
+    return [self.class node:self
+        nodesMatchingTraits:traits];
+}
+
 - (CGRect)bounds
 {
-    CGRect rect = CGRectZero;
+    CGRect rect = CGRectNull;
    for(IJSVGNode* node in self.children) {
-        rect = CGRectUnion(rect, node.bounds);
+        if(CGRectIsNull(rect)) {
+            rect = node.bounds;
+        } else {
+            rect = CGRectUnion(rect, node.bounds);
+        }
    }
    return rect;
 }
@@ -17,8 +17,7 @@

@property (nonatomic, readonly) CGSize intrinsicSize;
@property (nonatomic, readonly) CGRect intrinsicBounds;
-@property (nonatomic, readonly) CGAffineTransform intrinsicTransform;
-@property (nonatomic, retain) NSImage* image;
+@property (nonatomic, strong) NSImage* image;

 - (CGImageRef)CGImage;
 - (void)loadFromString:(NSString*)encodedString;
@@ -6,22 +6,27 @@
 //  Copyright © 2016 Curtis Hard. All rights reserved.
 //

-#import "IJSVGImage.h"
-#import "IJSVGPath.h"
-#import "IJSVGTransform.h"
+#import <IJSVG/IJSVGImage.h>
+#import <IJSVG/IJSVGPath.h>
+#import <IJSVG/IJSVGTransform.h>

@implementation IJSVGImage

 - (void)dealloc
 {
    (void)(CGImageRelease(CGImage)), CGImage = nil;
-    (void)([_image release]), _image = nil;
-    [super dealloc];
+}
+
+- (void)setDefaults
+{
+    [super setDefaults];
+    self.viewBoxAlignment = IJSVGViewBoxAlignmentXMidYMid;
+    self.viewBoxMeetOrSlice = IJSVGViewBoxMeetOrSliceMeet;
 }

 - (void)loadFromString:(NSString*)encodedString
 {
-    if ([encodedString hasPrefix:@"data:"]) {
+    if([encodedString hasPrefix:@"data:"]) {
        encodedString = [encodedString stringByReplacingOccurrencesOfString:@"\\s+"
                                                                 withString:@""
                                                                    options:NSRegularExpressionSearch
@@ -38,29 +43,28 @@
    NSData* data = [NSData dataWithContentsOfURL:aURL];

    // no data, just ignore...invalid probably
-    if (data == nil) {
+    if(data == nil) {
        return;
    }

    // set the image against the container
-    NSImage* anImage = [[[NSImage alloc] initWithData:data] autorelease];
+    NSImage* anImage = [[NSImage alloc] initWithData:data];
    [self setImage:anImage];
 }

 - (void)setImage:(NSImage*)anImage
 {
-    if (_image != nil) {
-        (void)([_image release]), _image = nil;
-    }
-    _image = [anImage retain];
+    _image = anImage;
    _intrinsicSize = (CGSize)_image.size;

-    if (CGImage != nil) {
+    if(CGImage != nil) {
        CGImageRelease(CGImage);
        CGImage = nil;
    }

-    NSRect rect = NSMakeRect(0.f, 0.f, _intrinsicSize.width, _intrinsicSize.height);
+    CGRect rect = CGRectMake(0.f, 0.f,
+                             _intrinsicSize.width,
+                             _intrinsicSize.height);
    CGImage = [_image CGImageForProposedRect:&rect
                                     context:nil
                                       hints:nil];
@@ -81,13 +85,6 @@
    return rect;
 }

- (CGAffineTransform)intrinsicTransform
-{
-    CGFloat widthRatio = self.width.value / _intrinsicSize.width;
-    CGFloat heightRatio = self.height.value / _intrinsicSize.height;
-    return CGAffineTransformMakeScale(widthRatio, heightRatio);
-}
-
 - (CGRect)bounds
 {
    return CGRectMake(0.f, 0.f,
@@ -11,7 +11,7 @@

@interface IJSVGLinearGradient : IJSVGGradient

-+ (NSGradient*)parseGradient:(NSXMLElement*)element
-                    gradient:(IJSVGLinearGradient*)aGradient;
+ (void)parseGradient:(NSXMLElement*)element
+             gradient:(IJSVGLinearGradient*)aGradient;

@end
@@ -6,14 +6,14 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGLinearGradient.h"
-#import "IJSVGUtils.h"
-#import "IJSVGParser.h"
+#import <IJSVG/IJSVGLinearGradient.h>
+#import <IJSVG/IJSVGUtils.h>
+#import <IJSVG/IJSVGParser.h>

@implementation IJSVGLinearGradient

-+ (NSGradient*)parseGradient:(NSXMLElement*)element
-                    gradient:(IJSVGLinearGradient*)aGradient
+ (void)parseGradient:(NSXMLElement*)element
+             gradient:(IJSVGLinearGradient*)aGradient
 {
    // just ask unit for the value
    NSString* x1 = ([element attributeForName:IJSVGAttributeX1].stringValue ?: @"0");
@@ -29,57 +29,49 @@
    NSArray* colors = nil;
    CGFloat* stopsParams = [self.class computeColorStops:aGradient
                                                  colors:&colors];
-    
-    // create the gradient with the colours
-    NSGradient* grad = [[NSGradient alloc] initWithColors:colors
-                                              atLocations:stopsParams
-                                               colorSpace:IJSVGColor.defaultColorSpace];
-
-    free(stopsParams);
-    return [grad autorelease];
+    aGradient.colors = colors;
+    aGradient.locations = stopsParams;
+    aGradient.numberOfStops = colors.count;
 }

 - (void)drawInContextRef:(CGContextRef)ctx
-              objectRect:(NSRect)objectRect
-       absoluteTransform:(CGAffineTransform)absoluteTransform
-                viewPort:(CGRect)viewBox
+                  bounds:(NSRect)objectRect
+               transform:(CGAffineTransform)absoluteTransform
 {
    BOOL inUserSpace = self.units == IJSVGUnitUserSpaceOnUse;

    CGPoint gradientStartPoint = CGPointZero;
    CGPoint gradientEndPoint = CGPointZero;
    CGAffineTransform selfTransform = IJSVGConcatTransforms(self.transforms);
-
-    CGRect boundingBox = inUserSpace ? viewBox : objectRect;
+    CGRect boundingBox = objectRect;
    
    // make sure we apply the absolute position to
    // transform us back into the correct space
-    if (inUserSpace == YES) {
-        CGContextConcatCTM(ctx, absoluteTransform);
-    }
-
    CGFloat width = CGRectGetWidth(boundingBox);
    CGFloat height = CGRectGetHeight(boundingBox);
-    gradientStartPoint = CGPointMake([self.x1 computeValue:width],
-        [self.y1 computeValue:height]);
-
-    gradientEndPoint = CGPointMake([self.x2 computeValue:width],
-        [self.y2 computeValue:height]);
    
-    // transform the context
+    if(inUserSpace == YES) {
+        CGContextConcatCTM(ctx, absoluteTransform);
+    } else {
+        width = 1.f;
+        height = 1.f;
+        CGContextConcatCTM(ctx, CGAffineTransformMakeScale(boundingBox.size.width,
+                                                           boundingBox.size.height));
+    }
+    
+    gradientStartPoint = CGPointMake([self.x1 computeValue:width],
+                                     [self.y1 computeValue:height]);
+    gradientEndPoint = CGPointMake([self.x2 computeValue:width],
+                                     [self.y2 computeValue:height]);
+    
+    // apply the gradient transform if there is one
    CGContextConcatCTM(ctx, selfTransform);
-
+    
    // draw the gradient
    CGGradientDrawingOptions options = kCGGradientDrawsBeforeStartLocation | kCGGradientDrawsAfterEndLocation;

    CGContextDrawLinearGradient(ctx, self.CGGradient, gradientStartPoint,
        gradientEndPoint, options);
-
-#ifdef IJSVG_DEBUG
-    [self _debugStart:gradientStartPoint
-                  end:gradientEndPoint
-              context:ctx];
-#endif
 }

@end
@@ -0,0 +1,13 @@
+//
+//  IJSVGMask.h
+//  IJSVG
+//
+//  Created by Curtis Hard on 28/05/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import <IJSVG/IJSVGGroup.h>
+
+@interface IJSVGMask : IJSVGGroup
+
+@end
@@ -0,0 +1,38 @@
+//
+//  IJSVGMask.m
+//  IJSVG
+//
+//  Created by Curtis Hard on 28/05/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import <IJSVG/IJSVGMask.h>
+#import <IJSVG/IJSVGRootNode.h>
+
+@implementation IJSVGMask
+
+- (void)setDefaults
+{
+    [super setDefaults];
+    self.x = [IJSVGUnitLength unitWithPercentageFloat:-.2f];
+    self.y = [IJSVGUnitLength unitWithPercentageFloat:-.2f];
+    self.width = [IJSVGUnitLength unitWithPercentageFloat:1.2f];
+    self.height = [IJSVGUnitLength unitWithPercentageFloat:1.2f];
+    self.units = IJSVGUnitObjectBoundingBox;
+    self.contentUnits = IJSVGUnitUserSpaceOnUse;
+    self.overflowVisibility = IJSVGOverflowVisibilityHidden;
+}
+
+- (IJSVGUnitType)contentUnitsWithReferencingNodeBounds:(CGRect *)bounds
+{
+    IJSVGNode* node = nil;
+    IJSVGUnitType units = [self contentUnitsWithReferencingNode:&node];
+    if(units == IJSVGUnitUserSpaceOnUse) {
+        *bounds = node.rootNode.bounds;
+    } else {
+        *bounds = node.parentNode.bounds;
+    }
+    return units;
+}
+
+@end
@@ -6,7 +6,7 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import <IJSVG/IJSVGStyle.h>
+#import <IJSVG/IJSVGStyleSheetStyle.h>
 #import <IJSVG/IJSVGUnitLength.h>
 #import <IJSVG/IJSVGViewBox.h>
 #import <AppKit/AppKit.h>
@@ -21,16 +21,28 @@
@class IJSVGTransform;
@class IJSVGRootNode;
@class IJSVGUnitRect;
+@class IJSVGFilter;
+@class IJSVGMask;
+@class IJSVGClipPath;

 typedef void (^IJSVGNodeWalkHandler)(IJSVGNode* node, BOOL* allowChildNodes, BOOL* stop);

+typedef NS_OPTIONS(NSInteger, IJSVGIntrinsicDimensions) {
+    IJSVGIntrinsicDimensionNone = 0,
+    IJSVGIntrinsicDimensionWidth = 1 << 1,
+    IJSVGIntrinsicDimensionHeight = 1 << 2,
+    IJSVGIntrinsicDimensionBoth = IJSVGIntrinsicDimensionWidth | IJSVGIntrinsicDimensionHeight
+};
+
 typedef NS_OPTIONS(NSInteger, IJSVGNodeTraits) {
    IJSVGNodeTraitNone = 0,
    IJSVGNodeTraitStroked = 1 << 0,
-    IJSVGNodeTraitPaintable = 1 << 1
+    IJSVGNodeTraitPaintable = 1 << 1,
+    IJSVGNodeTraitPathed = 1 << 2
 };

 typedef NS_ENUM(NSInteger, IJSVGNodeType) {
+    IJSVGNodeTypeUnknown = 0,
    IJSVGNodeTypeGroup,
    IJSVGNodeTypePath,
    IJSVGNodeTypeDef,
@@ -58,7 +70,9 @@ typedef NS_ENUM(NSInteger, IJSVGNodeType) {
    IJSVGNodeTypeDesc,
    IJSVGNodeTypeStop,
    IJSVGNodeTypeNotFound,
-    IJSVGNodeTypeUnknown,
+    IJSVGNodeTypeFilter,
+    IJSVGNodeTypeFilterEffect,
+    IJSVGNodeTypeForeignObject
 };

 typedef NS_ENUM(NSInteger, IJSVGWindingRule) {
@@ -114,14 +128,18 @@ typedef NS_ENUM(NSInteger, IJSVGOverflowVisibility) {
 };

 static CGFloat IJSVGInheritedFloatValue = -99.9999991;
+static CGFloat IJSVGInheritedIntegerValue = INT_MIN;

-@interface IJSVGNode : NSObject <NSCopying>
+@interface IJSVGNode : NSObject <NSCopying> {
+@private
+    BOOL _computedTraits;
+}

 void IJSVGAssertPaintableObject(id object);

@property (nonatomic, assign) IJSVGNodeTraits traits;
@property (nonatomic, assign, readonly) CGRect bounds;
-@property (nonatomic, retain) IJSVGUnitRect* viewBox;
+@property (nonatomic, strong) IJSVGUnitRect* viewBox;
@property (nonatomic, assign) IJSVGViewBoxAlignment viewBoxAlignment;
@property (nonatomic, assign) IJSVGViewBoxMeetOrSlice viewBoxMeetOrSlice;
@property (nonatomic, copy) NSString* title;
@@ -129,44 +147,59 @@ void IJSVGAssertPaintableObject(id object);
@property (nonatomic, assign) IJSVGNodeType type;
@property (nonatomic, copy) NSString* name;
@property (nonatomic, copy) NSString* className;
-@property (nonatomic, retain) NSArray* classNameList;
+@property (nonatomic, strong) NSSet<NSString*>* classNameList;
@property (nonatomic, copy) NSString* unicode;
@property (nonatomic, assign) BOOL shouldRender;
-@property (nonatomic, retain) IJSVGUnitLength* x;
-@property (nonatomic, retain) IJSVGUnitLength* y;
-@property (nonatomic, retain) IJSVGUnitLength* width;
-@property (nonatomic, retain) IJSVGUnitLength* height;
-@property (nonatomic, retain) IJSVGUnitLength* opacity;
-@property (nonatomic, retain) IJSVGUnitLength* fillOpacity;
-@property (nonatomic, retain) IJSVGUnitLength* strokeOpacity;
-@property (nonatomic, retain) IJSVGUnitLength* strokeWidth;
-@property (nonatomic, retain) IJSVGUnitLength* offset;
-@property (nonatomic, retain) IJSVGNode* fill;
-@property (nonatomic, retain) IJSVGNode* stroke;
+@property (nonatomic, strong) IJSVGUnitLength* x;
+@property (nonatomic, strong) IJSVGUnitLength* y;
+@property (nonatomic, strong) IJSVGUnitLength* width;
+@property (nonatomic, strong) IJSVGUnitLength* height;
+@property (nonatomic, strong) IJSVGUnitLength* opacity;
+@property (nonatomic, strong) IJSVGUnitLength* fillOpacity;
+@property (nonatomic, strong) IJSVGUnitLength* strokeOpacity;
+@property (nonatomic, strong) IJSVGUnitLength* strokeWidth;
+@property (nonatomic, strong) IJSVGUnitLength* offset;
+@property (nonatomic, strong) IJSVGNode* fill;
+@property (nonatomic, strong) IJSVGNode* stroke;
@property (nonatomic, copy) NSString* identifier;
@property (nonatomic, assign) IJSVGNode* parentNode;
-@property (nonatomic, retain) IJSVGGroup* clipPath;
-@property (nonatomic, retain) IJSVGGroup* mask;
+@property (nonatomic, strong) IJSVGClipPath* clipPath;
+@property (nonatomic, strong) IJSVGMask* mask;
@property (nonatomic, assign) IJSVGWindingRule windingRule;
+@property (nonatomic, assign) IJSVGWindingRule clipRule;
@property (nonatomic, assign) IJSVGLineCapStyle lineCapStyle;
@property (nonatomic, assign) IJSVGLineJoinStyle lineJoinStyle;
-@property (nonatomic, retain) NSArray<IJSVGTransform*>* transforms;
+@property (nonatomic, strong) IJSVGUnitLength* strokeMiterLimit;
+@property (nonatomic, strong) NSArray<IJSVGTransform*>* transforms;
+@property (nonatomic, strong) IJSVGFilter* filter;
@property (nonatomic, assign) CGFloat* strokeDashArray;
@property (nonatomic, assign) NSInteger strokeDashArrayCount;
@property (nonatomic, readonly) NSArray<NSNumber*>* lineDashPattern;
-@property (nonatomic, retain) IJSVGUnitLength* strokeDashOffset;
-@property (nonatomic, retain) IJSVG* svg;
+@property (nonatomic, strong) IJSVGUnitLength* strokeDashOffset;
+@property (nonatomic, strong) IJSVG* svg;
@property (nonatomic, assign) IJSVGUnitType contentUnits;
@property (nonatomic, assign) IJSVGUnitType units;
@property (nonatomic, assign) IJSVGBlendMode blendMode;
@property (nonatomic, assign) IJSVGOverflowVisibility overflowVisibility;
+@property (nonatomic, readonly) BOOL detachedFromParentNode;
+@property (nonatomic, readonly) IJSVGRootNode* rootNode;
+

 + (void)walkNodeTree:(IJSVGNode*)node
-            handler:(IJSVGNodeWalkHandler)handler;
+             handler:(IJSVGNodeWalkHandler)handler;
+
+ (NSArray<IJSVGNode*>*)node:(IJSVGNode*)node
+         nodesMatchingTraits:(IJSVGNodeTraits)traits;
+
+ (BOOL)node:(IJSVGNode*)node
+containsNodesMatchingTraits:(IJSVGNodeTraits)traits;

 + (IJSVGNodeType)typeForString:(NSString*)string
                          kind:(NSXMLNodeKind)kind;
+ (BOOL)typeIsPathable:(IJSVGNodeType)type;

+- (void)setDefaults;
+- (void)postProcess;
 - (void)applyPropertiesFromNode:(IJSVGNode*)node;

 - (IJSVGUnitType)contentUnitsWithReferencingNodeBounds:(CGRect*)bounds;
@@ -178,5 +211,11 @@ void IJSVGAssertPaintableObject(id object);
 - (void)removeTraits:(IJSVGNodeTraits)traits;
 - (BOOL)matchesTraits:(IJSVGNodeTraits)traits;
 - (void)computeTraits;
+- (void)normalizeWithOffset:(CGPoint)offset;
+
+- (NSSet<IJSVGNode*>*)nodesMatchingTypes:(NSIndexSet*)types;
+
+- (instancetype)parentNodeMatchingClass:(Class)class;
+- (instancetype)rootNodeMatchingClass:(Class)class;

@end
@@ -6,10 +6,10 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import <IJSVG/IJSVGDef.h>
 #import <IJSVG/IJSVGNode.h>
 #import <IJSVG/IJSVGGroup.h>
 #import <IJSVG/IJSVGUtils.h>
+#import <IJSVG/IJSVGRootNode.h>

@implementation IJSVGNode

@@ -19,38 +19,13 @@
 - (void)dealloc
 {
    (void)free(_strokeDashArray), _strokeDashArray = NULL;
-    (void)([_x release]), _x = nil;
-    (void)([_y release]), _y = nil;
-    (void)([_width release]), _width = nil;
-    (void)([_height release]), _height = nil;
-    (void)([_opacity release]), _opacity = nil;
-    (void)([_offset release]), _offset = nil;
-    (void)([_fillOpacity release]), _fillOpacity = nil;
-    (void)([_strokeOpacity release]), _strokeOpacity = nil;
-    (void)([_strokeWidth release]), _strokeWidth = nil;
-    (void)([_strokeDashOffset release]), _strokeDashOffset = nil;
-    (void)([_unicode release]), _unicode = nil;
-    (void)([_fill release]), _fill = nil;
-    (void)([_stroke release]), _stroke = nil;
-    (void)([_transforms release]), _transforms = nil;
-    (void)([_identifier release]), _identifier = nil;
-    (void)([_name release]), _name = nil;
-    (void)([_title release]), _title = nil;
-    (void)([_desc release]), _desc = nil;
-    (void)([_className release]), _className = nil;
-    (void)([_classNameList release]), _classNameList = nil;
-    (void)([_clipPath release]), _clipPath = nil;
-    (void)([_svg release]), _svg = nil;
-    (void)([_mask release]), _mask = nil;
-    (void)([_viewBox release]), _viewBox = nil;
-    [super dealloc];
 }

 + (IJSVGNodeType)typeForString:(NSString*)string
                          kind:(NSXMLNodeKind)kind
 {
    // possible fix for older os's that complain
-    if(string == nil || kind == NSXMLCommentKind) {
+    if(string == nil || kind != NSXMLElementKind) {
        return IJSVGNodeTypeNotFound;
    }
    
@@ -58,76 +33,76 @@
    if(name == NULL) {
        return IJSVGNodeTypeNotFound;
    }
-    if (strcmp(name, "style") == 0) {
+    if(strcmp(name, "style") == 0) {
        return IJSVGNodeTypeStyle;
    }
-    if (strcmp(name, "switch") == 0) {
+    if(strcmp(name, "switch") == 0) {
        return IJSVGNodeTypeSwitch;
    }
-    if (strcmp(name, "defs") == 0) {
+    if(strcmp(name, "defs") == 0) {
        return IJSVGNodeTypeDef;
    }
-    if (strcmp(name, "g") == 0) {
+    if(strcmp(name, "g") == 0) {
        return IJSVGNodeTypeGroup;
    }
-    if (strcmp(name, "path") == 0) {
+    if(strcmp(name, "path") == 0) {
        return IJSVGNodeTypePath;
    }
-    if (strcmp(name, "polygon") == 0) {
+    if(strcmp(name, "polygon") == 0) {
        return IJSVGNodeTypePolygon;
    }
-    if (strcmp(name, "polyline") == 0) {
+    if(strcmp(name, "polyline") == 0) {
        return IJSVGNodeTypePolyline;
    }
-    if (strcmp(name, "rect") == 0) {
+    if(strcmp(name, "rect") == 0) {
        return IJSVGNodeTypeRect;
    }
-    if (strcmp(name, "line") == 0) {
+    if(strcmp(name, "line") == 0) {
        return IJSVGNodeTypeLine;
    }
-    if (strcmp(name, "circle") == 0) {
+    if(strcmp(name, "circle") == 0) {
        return IJSVGNodeTypeCircle;
    }
-    if (strcmp(name, "ellipse") == 0) {
+    if(strcmp(name, "ellipse") == 0) {
        return IJSVGNodeTypeEllipse;
    }
-    if (strcmp(name, "use") == 0) {
+    if(strcmp(name, "use") == 0) {
        return IJSVGNodeTypeUse;
    }
-    if (strcmp(name, "lineargradient") == 0) {
+    if(strcmp(name, "lineargradient") == 0) {
        return IJSVGNodeTypeLinearGradient;
    }
-    if (strcmp(name, "radialgradient") == 0) {
+    if(strcmp(name, "radialgradient") == 0) {
        return IJSVGNodeTypeRadialGradient;
    }
    if(strcmp(name, "stop") == 0) {
        return IJSVGNodeTypeStop;
    }
-    if (strcmp(name, "glyph") == 0) {
+    if(strcmp(name, "glyph") == 0) {
        return IJSVGNodeTypeGlyph;
    }
-    if (strcmp(name, "font") == 0) {
+    if(strcmp(name, "font") == 0) {
        return IJSVGNodeTypeFont;
    }
-    if (strcmp(name, "clippath") == 0) {
+    if(strcmp(name, "clippath") == 0) {
        return IJSVGNodeTypeClipPath;
    }
-    if (strcmp(name, "mask") == 0) {
+    if(strcmp(name, "mask") == 0) {
        return IJSVGNodeTypeMask;
    }
-    if (strcmp(name, "image") == 0) {
+    if(strcmp(name, "image") == 0) {
        return IJSVGNodeTypeImage;
    }
-    if (strcmp(name, "pattern") == 0) {
+    if(strcmp(name, "pattern") == 0) {
        return IJSVGNodeTypePattern;
    }
-    if (strcmp(name, "svg") == 0) {
+    if(strcmp(name, "svg") == 0) {
        return IJSVGNodeTypeSVG;
    }
-    if (strcmp(name, "text") == 0) {
+    if(strcmp(name, "text") == 0) {
        return IJSVGNodeTypeText;
    }
-    if (strcmp(name, "tspan") == 0 || kind == NSXMLTextKind) {
+    if(strcmp(name, "tspan") == 0 || kind == NSXMLTextKind) {
        return IJSVGNodeTypeTextSpan;
    }
    if(strcmp(name, "title") == 0) {
@@ -136,9 +111,26 @@
    if(strcmp(name, "desc") == 0) {
        return IJSVGNodeTypeDesc;
    }
+    if(strcmp(name, "foreignobject") == 0) {
+        return IJSVGNodeTypeForeignObject;
+    }
+    if(strcmp(name, "filter") == 0) {
+        return IJSVGNodeTypeFilter;
+    }
+    if(strcmp(name, "fegaussianblur") == 0) {
+        return IJSVGNodeTypeFilterEffect;
+    }
    return IJSVGNodeTypeUnknown;
 }

+ (BOOL)typeIsPathable:(IJSVGNodeType)type
+{
+    return type == IJSVGNodeTypePath || type == IJSVGNodeTypeRect ||
+        type == IJSVGNodeTypeCircle || type == IJSVGNodeTypeEllipse ||
+        type == IJSVGNodeTypePolygon || type == IJSVGNodeTypePolyline ||
+        type == IJSVGNodeTypeLine;
+}
+
 + (void)walkNodeTree:(IJSVGNode*)node
             handler:(IJSVGNodeWalkHandler)handler
 {
@@ -183,13 +175,80 @@
    }
 }

+ (NSArray<IJSVGNode*>*)node:(IJSVGNode*)node
+         nodesMatchingTraits:(IJSVGNodeTraits)traits
+{
+    NSMutableArray<IJSVGNode*>* nodes = [[NSMutableArray alloc] init];
+    IJSVGNodeWalkHandler handler = ^(IJSVGNode* node,
+                                     BOOL* allowChildNodes,
+                                     BOOL* stop) {
+        // dont compute nodes that are not designed
+        // to be rendered
+        if(node.shouldRender == NO) {
+            *allowChildNodes = NO;
+            return;
+        }
+        
+        if([node matchesTraits:traits] == YES) {
+            [nodes addObject:node];
+        }
+    };
+    [IJSVGNode walkNodeTree:node
+                    handler:handler];
+    return nodes;
+}
+
+ (BOOL)node:(IJSVGNode*)node
+containsNodesMatchingTraits:(IJSVGNodeTraits)traits
+{
+    __block IJSVGNodeTraits matchedTraits = IJSVGNodeTraitNone;
+    IJSVGNodeWalkHandler handler = ^(IJSVGNode* node,
+                                     BOOL* allowChildNodes,
+                                     BOOL* stop) {
+        // dont compute nodes that are not designed
+        // to be rendered
+        if(node.shouldRender == NO) {
+            *allowChildNodes = NO;
+            return;
+        }
+        
+        // check for stroke
+        if((traits & IJSVGNodeTraitStroked) == IJSVGNodeTraitStroked &&
+           [node matchesTraits:IJSVGNodeTraitStroked] == YES) {
+            matchedTraits |= IJSVGNodeTraitStroked;
+        }
+        
+        // check for pathed
+        if((traits & IJSVGNodeTraitPathed) == IJSVGNodeTraitPathed &&
+           [node matchesTraits:IJSVGNodeTraitPathed] == YES) {
+            matchedTraits |= IJSVGNodeTraitPathed;
+        }
+        
+        // check for paintable
+        if((traits & IJSVGNodeTraitPaintable) == IJSVGNodeTraitPaintable &&
+           [node matchesTraits:IJSVGNodeTraitPaintable] == YES) {
+            matchedTraits |= IJSVGNodeTraitPaintable;
+        }
+                
+        // simply check if masks equal, if they are, stop this loop
+        // and return the evaluation
+        if(matchedTraits == traits) {
+            *stop = YES;
+        }
+    };
+    [IJSVGNode walkNodeTree:node
+                    handler:handler];
+    return matchedTraits == traits;
+}
+
 - (id)init
 {
-    if ((self = [super init]) != nil) {
+    if((self = [super init]) != nil) {
        self.opacity = [IJSVGUnitLength unitWithFloat:1.f];
        self.fillOpacity = [IJSVGUnitLength unitWithFloat:1.f];
        self.fillOpacity.inherit = YES;

+        self.strokeDashArrayCount = IJSVGInheritedIntegerValue;
        self.strokeDashOffset = [IJSVGUnitLength unitWithFloat:0.f];
        self.shouldRender = YES;

@@ -200,6 +259,7 @@
        self.strokeWidth.inherit = YES;

        self.windingRule = IJSVGWindingRuleInherit;
+        self.clipRule = IJSVGWindingRuleInherit;
        self.lineCapStyle = IJSVGLineCapStyleInherit;
        self.lineJoinStyle = IJSVGLineJoinStyleInherit;
        self.units = IJSVGUnitInherit;
@@ -207,6 +267,9 @@

        self.blendMode = IJSVGBlendModeNormal;
        self.overflowVisibility = IJSVGOverflowVisibilityVisible;
+        
+        // peform basic init
+        [self setDefaults];
    }
    return self;
 }
@@ -243,11 +306,13 @@
    self.strokeWidth = node.strokeWidth;
    self.fillOpacity = node.fillOpacity;
    self.strokeOpacity = node.strokeOpacity;
+    self.strokeMiterLimit = node.strokeMiterLimit;

    self.identifier = node.identifier;

    self.transforms = node.transforms;
    self.windingRule = node.windingRule;
+    self.clipRule = node.clipRule;
    self.lineCapStyle = node.lineCapStyle;
    self.lineJoinStyle = node.lineJoinStyle;
    self.parentNode = node.parentNode;
@@ -271,33 +336,43 @@
    return node;
 }

+- (void)postProcess
+{
+}
+
 - (void)setFill:(IJSVGNode*)fill
 {
    NSAssert([fill matchesTraits:IJSVGNodeTraitPaintable] || fill == nil, @"Fill must a paintable node.");
-    (void)[_fill release], _fill = nil;
-    _fill = [fill retain];
+    _fill = fill;
 }

 - (void)setStroke:(IJSVGNode*)stroke
 {
    NSAssert([stroke matchesTraits:IJSVGNodeTraitPaintable]|| stroke == nil, @"Stroke must be a paintable node.");
-    (void)[_stroke release], _stroke = nil;
-    _stroke = [stroke retain];
+    _stroke = stroke;
 }

 // winding rule can inherit..
 - (IJSVGWindingRule)windingRule
 {
-    if (_windingRule == IJSVGWindingRuleInherit && _parentNode != nil) {
+    if(_windingRule == IJSVGWindingRuleInherit && _parentNode != nil) {
        return _parentNode.windingRule;
    }
    return _windingRule;
 }

+- (IJSVGWindingRule)clipRule
+{
+    if(_clipRule == IJSVGWindingRuleInherit && _parentNode != nil) {
+        return _parentNode.clipRule;
+    }
+    return _clipRule;
+}
+
 - (IJSVGLineCapStyle)lineCapStyle
 {
-    if (_lineCapStyle == IJSVGLineCapStyleInherit) {
-        if (_parentNode != nil) {
+    if(_lineCapStyle == IJSVGLineCapStyleInherit) {
+        if(_parentNode != nil) {
            return _parentNode.lineCapStyle;
        }
    }
@@ -306,8 +381,8 @@

 - (IJSVGLineJoinStyle)lineJoinStyle
 {
-    if (_lineJoinStyle == IJSVGLineJoinStyleInherit) {
-        if (_parentNode != nil) {
+    if(_lineJoinStyle == IJSVGLineJoinStyleInherit) {
+        if(_parentNode != nil) {
            return _parentNode.lineJoinStyle;
        }
    }
@@ -318,7 +393,7 @@
 // if they dont exist on this specific node
 - (IJSVGUnitLength*)opacity
 {
-    if (_opacity.inherit && _parentNode != nil) {
+    if(_opacity.inherit && _parentNode != nil) {
        return _parentNode.opacity;
    }
    return _opacity;
@@ -328,7 +403,7 @@
 // if they dont exist on this specific node
 - (IJSVGUnitLength*)fillOpacity
 {
-    if (_fillOpacity.inherit && _parentNode != nil) {
+    if(_fillOpacity.inherit && _parentNode != nil) {
        return _parentNode.fillOpacity;
    }
    return _fillOpacity;
@@ -338,7 +413,7 @@
 // if they dont exist on this specific node
 - (IJSVGUnitLength*)strokeWidth
 {
-    if (_strokeWidth.inherit && _parentNode != nil) {
+    if(_strokeWidth.inherit && _parentNode != nil) {
        return _parentNode.strokeWidth;
    }
    return _strokeWidth;
@@ -346,7 +421,7 @@

 - (NSArray<NSNumber*>*)lineDashPattern
 {
-    NSMutableArray* arr = [[[NSMutableArray alloc] initWithCapacity:self.strokeDashArrayCount] autorelease];
+    NSMutableArray* arr = [[NSMutableArray alloc] initWithCapacity:self.strokeDashArrayCount];
    for (NSInteger i = 0; i < self.strokeDashArrayCount; i++) {
        [arr addObject:@((CGFloat)self.strokeDashArray[i])];
    }
@@ -357,15 +432,39 @@
 // if they dont exist on this specific node
 - (IJSVGNode*)stroke
 {
-    if (_stroke == nil && _parentNode != nil) {
+    if(_stroke == nil && _parentNode != nil) {
        return _parentNode.stroke;
    }
    return _stroke;
 }

+- (CGFloat*)strokeDashArray
+{
+    if(_strokeDashArray == NULL && _parentNode != nil) {
+        return _parentNode.strokeDashArray;
+    }
+    return _strokeDashArray;
+}
+
+- (NSInteger)strokeDashArrayCount
+{
+    if(_strokeDashArrayCount == IJSVGInheritedIntegerValue && _parentNode != nil) {
+        return _parentNode.strokeDashArrayCount;
+    }
+    return _strokeDashArrayCount;
+}
+
+- (IJSVGUnitLength *)strokeDashOffset
+{
+    if(_strokeDashOffset == nil && _parentNode != nil) {
+        return _parentNode.strokeDashOffset;
+    }
+    return _strokeDashOffset;
+}
+
 - (IJSVGUnitLength*)strokeOpacity
 {
-    if (_strokeOpacity.inherit && _parentNode != nil) {
+    if(_strokeOpacity.inherit && _parentNode != nil) {
        return _parentNode.strokeOpacity;
    }
    return _strokeOpacity;
@@ -375,7 +474,7 @@
 // must be on the path, it can also be on the
 - (IJSVGNode*)fill
 {
-    if (_fill == nil && _parentNode != nil) {
+    if(_fill == nil && _parentNode != nil) {
        return _parentNode.fill;
    }
    return _fill;
@@ -397,6 +496,14 @@
    return _contentUnits;
 }

+- (IJSVGUnitLength*)strokeMiterLimit
+{
+    if(_strokeMiterLimit == nil && _parentNode != nil) {
+        return _parentNode.strokeMiterLimit;
+    }
+    return _strokeMiterLimit;
+}
+
 - (IJSVGUnitType)contentUnitsWithReferencingNodeBounds:(CGRect*)bounds
 {
    IJSVGNode* node = nil;
@@ -414,6 +521,15 @@
    return _contentUnits;
 }

+- (IJSVGNodeTraits)traits
+{
+    if(_computedTraits == NO) {
+        _computedTraits = YES;
+        [self computeTraits];
+    }
+    return _traits;
+}
+
 - (void)addTraits:(IJSVGNodeTraits)traits
 {
    _traits |= traits;
@@ -426,7 +542,7 @@

 - (BOOL)matchesTraits:(IJSVGNodeTraits)traits
 {
-    return (_traits & traits) == traits;
+    return (self.traits & traits) == traits;
 }

 - (void)computeTraits
@@ -434,6 +550,10 @@
    // by default this does nothing
 }

+- (void)setDefaults
+{
+}
+
 - (instancetype)detach
 {
    self.parentNode = nil;
@@ -442,7 +562,81 @@

 - (NSString *)description
 {
-    return [NSString stringWithFormat:@"%@ %@ %@",self.name,self.classNameList,self.identifier];
+    return [NSString stringWithFormat:@"%@ %@ %@ %@",NSStringFromClass(self.class),
+            self.name,self.classNameList,self.identifier];
+}
+
+- (BOOL)detachedFromParentNode
+{
+    return self.type == IJSVGNodeTypeClipPath ||
+        self.type == IJSVGNodeTypeMask;
+}
+
+- (IJSVGRootNode*)rootNode
+{
+    IJSVGNode* parent = self;
+    while([parent isKindOfClass:IJSVGRootNode.class] == NO) {
+        parent = parent.parentNode;
+        if(parent == nil) {
+            return nil;
+        }
+    }
+    return (IJSVGRootNode*)parent;
+}
+
+- (NSSet<IJSVGNode*>*)nodesMatchingTypes:(NSIndexSet*)types
+{
+    NSMutableSet<IJSVGNode*>* nodes = [[NSMutableSet alloc] init];
+    IJSVGNodeWalkHandler handler = ^(IJSVGNode* node,
+                                     BOOL* allowChildNodes,
+                                     BOOL* stop) {
+        if([types containsIndex:node.type] == YES) {
+            [nodes addObject:node];
+        }
+    };
+    [self.class walkNodeTree:self
+                     handler:handler];
+    return nodes.copy;
+}
+
+- (instancetype)parentNodeMatchingClass:(Class)class
+{
+    IJSVGNode* parent = self.parentNode;
+    if([parent isKindOfClass:class] == YES) {
+        return parent;
+    }
+    return [parent parentNodeMatchingClass:class];
+}
+
+- (instancetype)rootNodeMatchingClass:(Class)class
+{
+    IJSVGRootNode* rootNode = self.rootNode;
+    IJSVGNode* parentNode = self.parentNode;
+    IJSVGNode* foundNode = nil;
+    while(parentNode != nil) {
+        // break on root node or if its matching
+        if(parentNode == rootNode || parentNode == nil) {
+            break;
+        }
+        if([parentNode isKindOfClass:class] == YES) {
+            foundNode = parentNode;
+        }
+        parentNode = parentNode.parentNode;
+    }
+    return foundNode;
+}
+
+- (void)normalizeWithOffset:(CGPoint)offset
+{
+    // if an SVG has been asked to normalize, its root will give us an offset
+    // to transform by to shift everything based on the viewBox's origin, we can
+    // simply just create a translate transform and stick at first position.
+    NSMutableArray* transforms = self.transforms ?
+        self.transforms.mutableCopy : [[NSMutableArray alloc] init];
+    IJSVGTransform* transform = [IJSVGTransform transformByTranslatingX:-offset.x
+                                                                      y:-offset.y];
+    [transforms insertObject:transform atIndex:0];
+    self.transforms = transforms;
 }

@end
@@ -31,6 +31,10 @@ typedef NS_ENUM(NSInteger, IJSVGPrimitivePathType) {
@property (nonatomic, readonly) CGRect controlPointBoundingBox;
@property (nonatomic, readonly) CGRect pathBoundingBox;

+ (void)recursivelyAddPathedNodesPaths:(NSArray<IJSVGNode*>*)nodes
+                             transform:(CGAffineTransform)transform
+                                toPath:(CGMutablePathRef)mutPath;
+
 - (void)close;
 - (NSPoint)currentPoint;

@@ -7,26 +7,52 @@
 //

 #import <IJSVG/IJSVGPath.h>
+#import <IJSVG/IJSVGGroup.h>

@implementation IJSVGPath

+ (void)recursivelyAddPathedNodesPaths:(NSArray<IJSVGNode*>*)nodes
+                             transform:(CGAffineTransform)transform
+                                toPath:(CGMutablePathRef)mutPath
+{
+    for(IJSVGPath* pathNode in nodes) {
+        // just a pathed node
+        if([pathNode matchesTraits:IJSVGNodeTraitPathed] == YES) {
+            CGPathAddPath(mutPath, &transform, pathNode.path);
+            continue;
+        }
+        
+        // could be a use group
+        if([pathNode isKindOfClass:IJSVGGroup.class] == YES) {
+            IJSVGGroup* useGroup = (IJSVGGroup*)pathNode;
+            [self recursivelyAddPathedNodesPaths:useGroup.children
+                                       transform:transform
+                                          toPath:mutPath];
+        }
+    }
+}
+
 - (void)dealloc
 {
    if(_path != NULL) {
        (void)CGPathRelease(_path), _path = NULL;
    }
-    [super dealloc];
 }

 - (id)init
 {
-    if ((self = [super init]) != nil) {
+    if((self = [super init]) != nil) {
        _primitiveType = kIJSVGPrimitivePathTypePath;
        _path = CGPathCreateMutable();
    }
    return self;
 }

+- (void)setDefaults
+{
+    [self addTraits:IJSVGNodeTraitPathed];
+}
+
 - (CGRect)bounds
 {
    return self.pathBoundingBox;
@@ -51,12 +77,12 @@

 - (CGRect)pathBoundingBox
 {
-    return CGPathGetPathBoundingBox(_path);
+    return CGPathGetBoundingBox(_path);
 }

 - (CGRect)controlPointBoundingBox
 {
-    return CGPathGetBoundingBox(_path);
+    return CGPathGetPathBoundingBox(_path);
 }

 - (NSPoint)currentPoint
@@ -81,7 +107,8 @@
        // component to then remove the trait if its 0.f
        if([self.stroke isKindOfClass:IJSVGColorNode.class] == YES) {
            IJSVGColorNode* strokeColor = (IJSVGColorNode*)self.stroke;
-            if(strokeColor.color.alphaComponent == 0.f) {
+            if(strokeColor.color.alphaComponent == 0.f ||
+               strokeColor.isNoneOrTransparent == YES) {
                [self removeTraits:IJSVGNodeTraitStroked];
            }
        }
@@ -6,8 +6,9 @@
 //  Copyright © 2016 Curtis Hard. All rights reserved.
 //

-#import "IJSVGPattern.h"
-#import "IJSVGUnitRect.h"
+#import <IJSVG/IJSVGPattern.h>
+#import <IJSVG/IJSVGUnitRect.h>
+#import <IJSVG/IJSVGRootNode.h>

@implementation IJSVGPattern

@@ -21,5 +22,22 @@
    return self;
 }

+- (IJSVGUnitType)contentUnitsWithReferencingNodeBounds:(CGRect*)bounds
+{
+    // as far as I can tell, units are inherited, so we need to go to the root
+    // level pattern if there is one (we could be nested) and if so, return those
+    // units as the actual units, but the bounds are based on the units of current
+    // units defined on this node... wtf?!
+    IJSVGNode* node = nil;
+    IJSVGPattern* parentPattern = [self rootNodeMatchingClass:self.class];
+    IJSVGUnitType units = [self contentUnitsWithReferencingNode:&node];
+    if(units == IJSVGUnitUserSpaceOnUse) {
+        *bounds = node.rootNode.bounds;
+    } else {
+        *bounds = node.parentNode.bounds;
+    }
+    return parentPattern ? [parentPattern contentUnitsWithReferencingNode:&node] : units;
+}
+

@end
@@ -11,14 +11,14 @@

@interface IJSVGRadialGradient : IJSVGGradient

-@property (nonatomic, retain) IJSVGUnitLength* cx;
-@property (nonatomic, retain) IJSVGUnitLength* cy;
-@property (nonatomic, retain) IJSVGUnitLength* fx;
-@property (nonatomic, retain) IJSVGUnitLength* fy;
-@property (nonatomic, retain) IJSVGUnitLength* fr;
-@property (nonatomic, retain) IJSVGUnitLength* r;
+@property (nonatomic, strong) IJSVGUnitLength* cx;
+@property (nonatomic, strong) IJSVGUnitLength* cy;
+@property (nonatomic, strong) IJSVGUnitLength* fx;
+@property (nonatomic, strong) IJSVGUnitLength* fy;
+@property (nonatomic, strong) IJSVGUnitLength* fr;
+@property (nonatomic, strong) IJSVGUnitLength* r;

-+ (NSGradient*)parseGradient:(NSXMLElement*)element
-                    gradient:(IJSVGRadialGradient*)gradient;
+ (void)parseGradient:(NSXMLElement*)element
+             gradient:(IJSVGRadialGradient*)gradient;

@end
@@ -11,17 +11,6 @@

@implementation IJSVGRadialGradient

- (void)dealloc
-{
-    (void)([_cx release]), _cx = nil;
-    (void)([_cy release]), _cy = nil;
-    (void)([_fx release]), _fx = nil;
-    (void)([_fy release]), _fy = nil;
-    (void)([_fr release]), _fr = nil;
-    (void)([_r release]), _r = nil;
-    [super dealloc];
-}
-
 - (id)copyWithZone:(NSZone*)zone
 {
    IJSVGRadialGradient* grad = [super copyWithZone:zone];
@@ -34,8 +23,8 @@
    return grad;
 }

-+ (NSGradient*)parseGradient:(NSXMLElement*)element
-                    gradient:(IJSVGRadialGradient*)gradient
+ (void)parseGradient:(NSXMLElement*)element
+             gradient:(IJSVGRadialGradient*)gradient
 {
    // cx defaults to 50% if not specified
    NSDictionary* kv = @{
@@ -46,7 +35,7 @@
    for (NSString* key in kv.allKeys) {
        NSString* str = [element attributeForName:key].stringValue;
        IJSVGUnitLength* unit = nil;
-        if (str != nil) {
+        if(str != nil) {
            unit = [IJSVGUnitLength unitWithString:str
                                      fromUnitType:gradient.units];
        } else {
@@ -72,52 +61,52 @@

    // needs fixing
    NSString* fx = [element attributeForName:IJSVGAttributeFX].stringValue;
-    if (fx != nil) {
+    if(fx != nil) {
        gradient.fx = [IJSVGUnitLength unitWithString:fx
                                         fromUnitType:gradient.units];
    }

    NSString* fy = [element attributeForName:IJSVGAttributeFY].stringValue;
-    if (fy != nil) {
+    if(fy != nil) {
        gradient.fy = [IJSVGUnitLength unitWithString:fy
                                         fromUnitType:gradient.units];
    }

-    if (gradient.gradient != nil) {
-        return nil;
-    }
-
    NSArray* colors = nil;
    CGFloat* colorStops = [self.class computeColorStops:gradient
                                                 colors:&colors];
-    
-    NSGradient* ret = [[[NSGradient alloc] initWithColors:colors
-                                              atLocations:colorStops
-                                               colorSpace:IJSVGColor.defaultColorSpace] autorelease];
-    free(colorStops);
-    return ret;
+    gradient.locations = colorStops;
+    gradient.colors = colors;
+    gradient.numberOfStops = colors.count;
 }

 - (void)drawInContextRef:(CGContextRef)ctx
-              objectRect:(NSRect)objectRect
-       absoluteTransform:(CGAffineTransform)absoluteTransform
-                viewPort:(CGRect)viewBox
+                  bounds:(NSRect)objectRect
+               transform:(CGAffineTransform)absoluteTransform
 {
    CGContextSaveGState(ctx);
+    CGContextSetInterpolationQuality(ctx, kCGInterpolationLow);
    BOOL inUserSpace = self.units == IJSVGUnitUserSpaceOnUse;
    CGFloat radius = 0.f;
    CGPoint startPoint = CGPointZero;
    CGPoint gradientStartPoint = CGPointZero;
    CGPoint gradientEndPoint = CGPointZero;
+    CGRect boundingBox = objectRect;

    // transforms
    CGAffineTransform selfTransform = IJSVGConcatTransforms(self.transforms);
-
-    CGRect boundingBox = inUserSpace ? viewBox : objectRect;
    
    // compute size based on percentages
-    CGFloat width = CGRectGetWidth(boundingBox);
-    CGFloat height = CGRectGetHeight(boundingBox);
+    CGFloat width = 0.f;
+    CGFloat height = 0.f;
+    if(inUserSpace == YES) {
+        width = CGRectGetWidth(boundingBox);
+        height = CGRectGetHeight(boundingBox);
+    } else {
+        width = 1.f;
+        height = 1.f;
+    }
+    
    CGFloat cx = [_cx computeValue:width];
    CGFloat cy = [_cy computeValue:height];
    startPoint = CGPointMake(cx, cy);
@@ -136,35 +125,13 @@
    if(inUserSpace == YES) {
        CGFloat rad = 2.f * radius;
        CGRect rect = CGRectMake(startPoint.x, startPoint.y, rad, rad);
-        rect = CGRectApplyAffineTransform(rect, selfTransform);
-        rect = CGRectApplyAffineTransform(rect, absoluteTransform);
        radius = CGRectGetHeight(rect) / 2.f;
        CGContextConcatCTM(ctx, absoluteTransform);
-    } else if(width != height) {
-        CGAffineTransform transform = CGAffineTransformIdentity;
-        CGAffineTransform invert = CGAffineTransformIdentity;
-        CGPoint invPoint = CGPointZero;
-        CGFloat* radiusScale;
-        if(width > height) {
-            transform = CGAffineTransformMakeScale(1.f, height / width);
-            radiusScale = &invPoint.y;
-        } else {
-            transform = CGAffineTransformMakeScale(width / height, 1.f);
-            radiusScale = &invPoint.x;
-        }
-        invert = CGAffineTransformInvert(transform);
-        invPoint.x = invert.a;
-        invPoint.y = invert.d;
-        gradientStartPoint.x *= invPoint.x;
-        gradientStartPoint.y *= invPoint.y;
-        gradientEndPoint.x *= invPoint.x;
-        gradientEndPoint.y *= invPoint.y;
-        radius *= *radiusScale;
-        focalRadius *= *radiusScale;
-        selfTransform = CGAffineTransformConcat(transform, selfTransform);
+    } else {
+        CGContextConcatCTM(ctx, CGAffineTransformMakeScale(CGRectGetWidth(boundingBox),
+                                                           CGRectGetHeight(boundingBox)));
    }
    
-    // transform the context
    CGContextConcatCTM(ctx, selfTransform);

    // draw the gradient
@@ -174,12 +141,6 @@
        gradientStartPoint,
        radius, options);
    CGContextRestoreGState(ctx);
-
-//#ifdef IJSVG_DEBUG_GRADIENTS
-//    [self _debugStart:gradientStartPoint
-//                  end:gradientEndPoint
-//              context:ctx];
-//#endif
 }

@end
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Curtis Hard	b2604c19aa	testing 123	2022-08-17 13:28:56 +01:00
Curtis Hard	258c79d208	Fixes a memory leak	2022-08-04 14:37:07 +01:00
Curtis Hard	5228c87f16	Added nodes matching traits	2022-08-01 21:33:55 +01:00
Curtis Hard	05ec5c5a29	Adds stroke to path on export option - fixed stroke opacity - adds convenience method for grabbing a stroke layer from another layer	2022-07-17 17:53:14 +01:00
Curtis Hard	8628b38938	Start of converting strokes to paths	2022-07-13 20:39:03 +01:00
Curtis Hard	3cc8f1f355	Adds feature flags, updates example with correct calls	2022-07-13 19:45:32 +01:00
Curtis Hard	c7b56ba877	Added normalisation of viewBox's	2022-07-11 20:35:40 +01:00
Curtis Hard	e25b00efb7	Fixes image resizing	2022-07-07 17:51:07 +01:00
Curtis Hard	37d6cc7fd8	FIxes for image export	2022-07-07 17:27:12 +01:00
Curtis Hard	b2eaf7ead5	Adds convenience methods for unit sizes	2022-07-07 17:12:05 +01:00
Curtis Hard	f60f07ae70	Removed references for delegate as its useless now	2022-07-06 19:01:32 +01:00
Curtis Hard	bb9ea4ade8	Fixes aspect ratio method	2022-07-06 17:35:31 +01:00
Curtis Hard	d4f96823ec	Various testing SVG’s	2022-07-05 17:22:32 +01:00
Curtis Hard	c1b024f7a7	Removed refs to delegate and colors	2022-07-05 17:17:30 +01:00
Curtis Hard	2aa004f4b2	Removed font converter as its now useless	2022-07-05 17:06:52 +01:00
Curtis Hard	4a80c51070	Various methods to find nested children	2022-07-04 09:01:03 +01:00
Curtis Hard	c8a813a29e	Various renaming and refactors	2022-07-02 19:56:59 +01:00
Curtis Hard	6ca015aeb7	Few performance refactors for stylesheets	2022-07-02 12:11:58 +01:00
Curtis Hard	3647c91ab2	Prevents recursion when working out clip-rule	2022-07-02 11:04:51 +01:00
Curtis Hard	ee66d25b9e	Fixes clipRule on paths	2022-07-01 21:02:31 +01:00
Curtis Hard	03dfc7deb6	Adds clipRule support in	2022-07-01 20:06:10 +01:00
Curtis Hard	1b75f8964d	Code formattering and refactor of matching masks on SVGs	2022-07-01 16:25:00 +01:00
Curtis Hard	1506840957	Adds lineCap, lineJoin, width and miterLimit style settings back in	2022-07-01 13:48:34 +01:00
Curtis Hard	ae7e1e0196	Fixes absolute to relative path conversion - adds support for varied dimensions on root SVG when exported - adds constants for infinite and intrisic sizes	2022-07-01 13:13:07 +01:00
Curtis Hard	20589bfd83	Implement colour changing back into layer tree	2022-06-30 22:34:52 +01:00
Curtis Hard	96156fe1e0	Adds colors and storage into IJSVG	2022-06-30 21:35:40 +01:00
Curtis Hard	daf843dd26	start refactor of colorLists	2022-06-30 18:59:37 +01:00
Curtis Hard	8789c7cef7	Adds image exporting + fixes a few things	2022-06-29 18:10:00 +01:00
Curtis Hard	551548579c	Fixes circle -> ellipsis parsing	2022-06-28 18:48:12 +01:00
Curtis Hard	5206052905	Adds better pattern export support and also fixes clipPath exporting	2022-06-28 17:58:52 +01:00
Curtis Hard	6ee54e42bb	Various improvements and constants	2022-06-28 13:05:05 +01:00
Curtis Hard	38d7fe15ea	Adds clipPath support in to exporter	2022-06-27 20:02:08 +01:00
Curtis Hard	0905545edc	Few formatting and fixes	2022-06-27 19:22:54 +01:00
Curtis Hard	3ae7f1b6d5	More export fixes	2022-06-27 15:16:27 +01:00
Curtis Hard	23f861584c	Initial start of export refactor to use new layer things	2022-06-26 18:53:29 +01:00
Curtis Hard	94b7e3fe87	Fixes lack of viewbox or dimensions	2022-06-12 19:14:59 +01:00
Curtis Hard	df7ceb3df1	Tidy up of viewBox code	2022-06-12 17:26:07 +01:00
Curtis Hard	3efea34d76	refactor methods into root class	2022-06-09 22:33:47 +01:00
Curtis Hard	7f74e66e90	Fixes clipPath and possible patterns...	2022-06-09 20:45:37 +01:00
Curtis Hard	35473e11c9	Fixes issue with patterns without a viewBox	2022-06-09 12:57:44 +01:00
Curtis Hard	4d00aab469	Nice refactor of viewBox’s	2022-06-07 19:46:31 +01:00
Curtis Hard	bea50a033a	Possible fix for gradients and pattern alignment	2022-06-07 11:45:16 +01:00
Curtis Hard	fe9226a921	Code tidy	2022-06-06 21:30:31 +01:00
Curtis Hard	fa62c7d334	Fix for patterns viewBox	2022-06-06 21:02:21 +01:00
Curtis Hard	3f58044f9d	Adds a better call for viewboxes	2022-06-06 20:19:19 +01:00
Curtis Hard	96218c3fbe	Images now obey their preserveAspectRatio	2022-06-06 17:50:16 +01:00
Curtis Hard	d1b2fc882d	Will use clipPaths for stroke patterns and gradient fills	2022-06-06 12:21:43 +01:00
Curtis Hard	008c70079f	refactor gradients calls so they are nicer	2022-06-05 21:48:48 +01:00
Curtis Hard	05677c7c82	Fixes scale being applied twice #oops	2022-06-05 12:53:19 +01:00
Curtis Hard	8042ed7dc7	Fix for compiler warnings	2022-06-04 22:11:56 +01:00
Curtis Hard	ff0b7e0866	Reverts to vector clippaths for clippaths and groups	2022-06-04 20:10:59 +01:00
Curtis Hard	304cac0a09	Remove integral transform on the rect, it breaks things	2022-06-04 17:20:31 +01:00
Curtis Hard	832527134f	Stops defaulting to backing scale from screen	2022-06-04 17:07:34 +01:00
Curtis Hard	8657228b26	Fixes viewPort sizing	2022-06-04 16:50:31 +01:00
Curtis Hard	28c36337c2	Basic clipPath support on layers too	2022-06-04 16:30:18 +01:00
Curtis Hard	44504371ea	Added clipPaths support (i think)	2022-06-04 15:51:54 +01:00
Curtis Hard	566527b6c0	Added clipPath as its own node	2022-06-02 16:06:01 +01:00
Curtis Hard	e235b833ed	Fixes root node positions and size	2022-06-02 16:05:29 +01:00
Curtis Hard	60547feb98	Mostly fixes masks, as far as I can tell	2022-05-28 20:41:39 +01:00
Curtis Hard	153258fa31	Fixes some masking issues	2022-05-25 21:45:58 +01:00
Curtis Hard	77741e3f38	Fixes fill opacity	2022-05-25 15:39:58 +01:00
Curtis Hard	22983a33a7	Fixes mask	2022-05-25 15:03:44 +01:00
Curtis Hard	e9421025d9	Added wildcard combinator to stylesheets	2022-05-24 21:00:54 +01:00
Curtis Hard	33bd390f94	Fixes fill opacity for paintable layers	2022-05-24 20:44:47 +01:00
Curtis Hard	767ecb0b62	Fix radial gradient userspaceonuse	2022-05-24 20:28:32 +01:00
Curtis Hard	2afae1516a	Fixes patterns and masking	2022-05-24 19:58:46 +01:00
Curtis Hard	6f9412c3c0	Fixes preserveAspectRatio if there is a implicit size	2022-05-21 17:56:52 +01:00
Curtis Hard	fac780b47a	Possible fix for radial gradients objectBoundingBox	2022-05-19 10:54:53 +01:00
Curtis Hard	2f7c34cf68	Fixes linear gradient drawing with transform	2022-05-17 20:30:52 +01:00
Curtis Hard	f2c50ec5a4	Few more fixes	2022-05-13 18:22:12 +01:00
Curtis Hard	3cc75701fc	Fixes parsing of clippaths	2022-05-13 10:45:13 +01:00
Curtis Hard	5ba7e94d24	Adds better recursie def parsing (some people reference other elements that have yet to be parsed..)	2022-05-12 19:47:18 +01:00
Curtis Hard	4e53a2cfa9	Fixes switch statements in SVG’s	2022-05-12 18:44:50 +01:00
Curtis Hard	a1eb04ab1d	Fixes inherit crash	2022-05-12 17:08:06 +01:00
Curtis Hard	88d7bd048d	Fixes various use things and dash patterns	2022-05-12 17:02:20 +01:00
Curtis Hard	0dd8e1755e	Wrong class used for filter effects detection	2022-05-10 16:31:39 +01:00
Curtis Hard	e34f28cbda	oops, fixed!	2022-05-10 15:54:55 +01:00
Curtis Hard	f7a566d078	Fixes use and transform	2022-05-10 15:39:26 +01:00
Curtis Hard	7ebfa75ccd	Fixes viewbox transforms	2022-05-10 12:37:34 +01:00
Curtis Hard	84ade44557	Fixes default colour opacity	2022-05-10 12:29:16 +01:00
Curtis Hard	1f0d0b41dc	Clip path and userSpaceOnUse fixes	2022-05-10 12:06:38 +01:00
Curtis Hard	4c280e9694	Filter fixes	2022-05-09 18:37:42 +01:00
Curtis Hard	240a62127c	Fixes parsing crash	2022-05-09 17:51:51 +01:00
Curtis Hard	7eb2e12164	more parsing fixes and CA issues resolved	2022-05-09 09:19:27 +01:00
Curtis Hard	2224a2538d	Fixes buffer with whitespace parsing issue - adds more examples	2022-05-08 17:00:33 +01:00
Curtis Hard	7513fc92fd	Gradients no longer need their NS counterpart	2022-05-04 11:49:34 +01:00
Curtis Hard	7a0390b377	Uses angle brackers instead of quotes for imports	2022-04-20 22:28:23 +01:00
Curtis Hard	1cefc6aeed	More ARC fixes	2022-04-20 21:37:26 +01:00
Curtis Hard	824e87d69a	More ARC things	2022-04-20 20:27:30 +01:00
Curtis Hard	e80088fc71	Dont know....	2022-04-20 18:07:01 +01:00
Curtis Hard	46ba1ddcbd	Converted everything to ARC.. ARC ALL THINGS!	2022-04-20 18:06:53 +01:00
Curtis Hard	533c369eb8	Adds threadmanager in to deal with per thread memory	2022-04-20 12:14:59 +01:00
Curtis Hard	5ac8aa8760	Fixes inner/outer bounding box frames for masks and snapshots	2022-04-19 22:36:00 +01:00
Curtis Hard	b6ebd598e7	Initial filters	2022-04-19 18:11:54 +01:00