fix crash with realloc call being incorrect

implement better sizing
Speed up Xcode 16 build times
2025-01-26 12:44:09 +00:00 · 2024-12-15 20:47:30 +00:00 · 2024-09-17 23:00:34 +01:00 · 2024-07-21 13:45:39 +01:00 · 2024-07-21 13:44:32 +01:00 · 2024-07-16 18:48:13 +01:00
221 changed files with 68982 additions and 21764 deletions
@@ -0,0 +1 @@
+.DS_Store
@@ -0,0 +1,5 @@
+framework module IJSVG {
+    umbrella header "IJSVGUmbrella.h"
+    export *
+    module * { export * } 
+}
@@ -3,46 +3,76 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 50;
+	objectVersion = 54;
 	objects = {

 /* Begin PBXBuildFile section */
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 		5919E65C23F480330051873A /* IJSVGUnitPoint.m in Sources */ = {isa = PBXBuildFile; fileRef = 5919E65A23F480330051873A /* IJSVGUnitPoint.m */; };
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 		59A24EBD23F480EA0090C374 /* IJSVGUnitSize.m in Sources */ = {isa = PBXBuildFile; fileRef = 59A24EBB23F480EA0090C374 /* IJSVGUnitSize.m */; };
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@@ -52,15 +82,11 @@
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@@ -78,7 +104,7 @@
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@@ -86,10 +112,10 @@
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@@ -111,7 +137,6 @@
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 		59EB759F23905F6E00F5AE63 /* IJSVGLinearGradient.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IJSVGLinearGradient.h; sourceTree = "<group>"; };
 		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>"; };
@@ -214,10 +278,10 @@
 		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>"; };
@@ -239,7 +303,6 @@
 		59EB75C023905F7100F5AE63 /* IJSVGText.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGText.m; sourceTree = "<group>"; };
 		59EB75C123905F7100F5AE63 /* IJSVGView.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGView.m; sourceTree = "<group>"; };
 		59EB75C223905F7100F5AE63 /* IJSVGLinearGradient.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGLinearGradient.m; sourceTree = "<group>"; };
-		59EB75C323905F7100F5AE63 /* IJSVGBezierPathAdditions.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IJSVGBezierPathAdditions.h; sourceTree = "<group>"; };
 		59EB75C423905F7100F5AE63 /* IJSVGStyleSheetSelector.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGStyleSheetSelector.m; sourceTree = "<group>"; };
 		59EB75C523905F7100F5AE63 /* IJSVGImageLayer.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGImageLayer.m; sourceTree = "<group>"; };
 		59EB75C623905F7100F5AE63 /* IJSVGCommandClose.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGCommandClose.m; sourceTree = "<group>"; };
@@ -258,6 +321,18 @@
 		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 /* 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>"; };
+		59FCC09327F2394D00BB924E /* IJSVGRootNode.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = IJSVGRootNode.m; sourceTree = "<group>"; };
+		59FDBEFE27F3454800AF7038 /* IJSVGColorNode.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = IJSVGColorNode.h; sourceTree = "<group>"; };
+		59FDBEFF27F3454800AF7038 /* IJSVGColorNode.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = IJSVGColorNode.m; sourceTree = "<group>"; };
+		59FE8E4128C7E70800AB38B3 /* IJSVGStop.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = IJSVGStop.m; sourceTree = "<group>"; };
+		59FE8E4228C7E70800AB38B3 /* IJSVGStop.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IJSVGStop.h; sourceTree = "<group>"; };
 /* End PBXFileReference section */

 /* Begin PBXFrameworksBuildPhase section */
@@ -275,6 +350,15 @@
 /* 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 = (
@@ -307,8 +391,8 @@
 		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 */,
@@ -326,8 +410,10 @@
 			children = (
 				59EB758323905F6C00F5AE63 /* IJSVGColor.h */,
 				59EB758523905F6C00F5AE63 /* IJSVGColor.m */,
-				59EB75A923905F6F00F5AE63 /* IJSVGColorList.h */,
-				59EB757123905F6C00F5AE63 /* IJSVGColorList.m */,
+				59EB75A923905F6F00F5AE63 /* IJSVGTraitedColorStorage.h */,
+				59EB757123905F6C00F5AE63 /* IJSVGTraitedColorStorage.m */,
+				59F36506262F1ABB00BCE3FD /* IJSVGTraitedColor.h */,
+				59F36507262F1ABB00BCE3FD /* IJSVGTraitedColor.m */,
 			);
 			path = Colors;
 			sourceTree = "<group>";
@@ -345,12 +431,20 @@
 				59EB757B23905F6C00F5AE63 /* IJSVGLayer.m */,
 				59EB75BF23905F7000F5AE63 /* IJSVGPatternLayer.h */,
 				59EB758C23905F6D00F5AE63 /* IJSVGPatternLayer.m */,
-				59EB757223905F6C00F5AE63 /* IJSVGRadialGradient.h */,
-				59EB75A623905F6F00F5AE63 /* IJSVGRadialGradient.m */,
 				59EB759723905F6D00F5AE63 /* IJSVGShapeLayer.h */,
 				59EB757A23905F6C00F5AE63 /* IJSVGShapeLayer.m */,
 				59EB75A423905F6E00F5AE63 /* IJSVGStrokeLayer.h */,
 				59EB757423905F6C00F5AE63 /* IJSVGStrokeLayer.m */,
+				590EB7A227F637EF0047CECF /* IJSVGTransformLayer.h */,
+				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>";
@@ -369,12 +463,15 @@
 		592ABBE72397A02900F44380 /* Nodes */ = {
 			isa = PBXGroup;
 			children = (
+				590AA093280DE648002BBE12 /* Filter Effects */,
+				59FE8E4228C7E70800AB38B3 /* IJSVGStop.h */,
+				59FE8E4128C7E70800AB38B3 /* IJSVGStop.m */,
 				59EB75CE23905F7200F5AE63 /* IJSVGForeignObject.h */,
 				59EB75C923905F7200F5AE63 /* IJSVGForeignObject.m */,
-				59EB758623905F6C00F5AE63 /* IJSVGDef.h */,
-				59EB756923905F6B00F5AE63 /* IJSVGDef.m */,
 				59EB759F23905F6E00F5AE63 /* IJSVGLinearGradient.h */,
 				59EB75C223905F7100F5AE63 /* IJSVGLinearGradient.m */,
+				59EB757223905F6C00F5AE63 /* IJSVGRadialGradient.h */,
+				59EB75A623905F6F00F5AE63 /* IJSVGRadialGradient.m */,
 				59EB75AB23905F6F00F5AE63 /* IJSVGGradient.h */,
 				59EB75D223905F7300F5AE63 /* IJSVGGradient.m */,
 				59EB758B23905F6D00F5AE63 /* IJSVGGroup.h */,
@@ -389,6 +486,18 @@
 				59EB75AA23905F6F00F5AE63 /* IJSVGPattern.m */,
 				59EB756B23905F6B00F5AE63 /* IJSVGText.h */,
 				59EB75C023905F7100F5AE63 /* IJSVGText.m */,
+				59FCC09227F2394D00BB924E /* IJSVGRootNode.h */,
+				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>";
@@ -414,6 +523,20 @@
 				5919E65A23F480330051873A /* IJSVGUnitPoint.m */,
 				59A24EBA23F480EA0090C374 /* IJSVGUnitSize.h */,
 				59A24EBB23F480EA0090C374 /* IJSVGUnitSize.m */,
+				591A3E4B25CC91F800AD45B7 /* IJSVGParsing.h */,
+				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 */,
+				5919111C28C7F1160047791B /* IJSVGBitFlags.h */,
+				5919111D28C7F1160047791B /* IJSVGBitFlags.m */,
+				59DB84DE28C9F70000A9696A /* IJSVGBitFlags64.h */,
+				59DB84DF28C9F70000A9696A /* IJSVGBitFlags64.m */,
 			);
 			path = Utils;
 			sourceTree = "<group>";
@@ -436,8 +559,8 @@
 				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>";
@@ -445,10 +568,10 @@
 		592ABBEB2397A11800F44380 /* Additions */ = {
 			isa = PBXGroup;
 			children = (
-				59EB75C323905F7100F5AE63 /* IJSVGBezierPathAdditions.h */,
-				59EB758E23905F6D00F5AE63 /* IJSVGBezierPathAdditions.m */,
 				59EB75B823905F7000F5AE63 /* IJSVGStringAdditions.h */,
 				59EB757823905F6C00F5AE63 /* IJSVGStringAdditions.m */,
+				594A10D8248D7C90001A3181 /* NSImage+IJSVGAdditions.h */,
+				594A10D9248D7C90001A3181 /* NSImage+IJSVGAdditions.m */,
 			);
 			path = Additions;
 			sourceTree = "<group>";
@@ -473,6 +596,7 @@
 		594CF471238FF38E009B251B /* IJSVG */ = {
 			isa = PBXGroup;
 			children = (
+				596AB830298854270013110A /* IJSVG.modulemap */,
 				59EB756423905F3100F5AE63 /* Source */,
 				594CF473238FF38E009B251B /* Info.plist */,
 			);
@@ -496,14 +620,11 @@
 				59EB756A23905F6B00F5AE63 /* IJSVG.h */,
 				59EB75A223905F6E00F5AE63 /* IJSVG.m */,
 				59EB758423905F6C00F5AE63 /* IJSVGError.h */,
-				59EB758823905F6D00F5AE63 /* IJSVGFontConverter.h */,
-				59EB757C23905F6C00F5AE63 /* IJSVGFontConverter.m */,
 				59EB75A323905F6E00F5AE63 /* IJSVGImageRep.h */,
 				59EB757D23905F6C00F5AE63 /* IJSVGImageRep.m */,
 				59EB75CD23905F7200F5AE63 /* IJSVGView.h */,
 				59EB75C123905F7100F5AE63 /* IJSVGView.m */,
-				59EB756E23905F6C00F5AE63 /* IJSVGWriter.h */,
-				59EB758923905F6D00F5AE63 /* IJSVGWriter.m */,
+				595FD12E29EC56BA00666897 /* IJSVGUmbrella.h */,
 			);
 			path = Core;
 			sourceTree = "<group>";
@@ -535,7 +656,6 @@
 			files = (
 				59EB762623905F7300F5AE63 /* IJSVGImage.h in Headers */,
 				59EB760823905F7300F5AE63 /* IJSVGShapeLayer.h in Headers */,
-				59EB75DF23905F7300F5AE63 /* IJSVGWriter.h in Headers */,
 				59EB760F23905F7300F5AE63 /* IJSVGCommandEllipticalArc.h in Headers */,
 				59EB75F523905F7300F5AE63 /* IJSVGError.h in Headers */,
 				59EB763E23905F7300F5AE63 /* IJSVGView.h in Headers */,
@@ -543,14 +663,13 @@
 				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 */,
@@ -567,11 +686,10 @@
 				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 */,
@@ -580,18 +698,40 @@
 				59EB75D623905F7300F5AE63 /* IJSVGLayer.h in Headers */,
 				59EB763023905F7300F5AE63 /* IJSVGPatternLayer.h in Headers */,
 				59EB75F023905F7300F5AE63 /* IJSVGStyleSheetSelectorRaw.h in Headers */,
-				59EB763423905F7300F5AE63 /* IJSVGBezierPathAdditions.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 */,
+				595FD12F29EC56BA00666897 /* IJSVGUmbrella.h in Headers */,
+				59F36508262F1ABB00BCE3FD /* IJSVGTraitedColor.h in Headers */,
 				59E7CFAF23B148600077D599 /* IJSVGCommandParser.h in Headers */,
 				59EB762823905F7300F5AE63 /* IJSVGCommandClose.h in Headers */,
 				59EB75E423905F7300F5AE63 /* IJSVGGradientUnitLength.h in Headers */,
+				59FCC09427F2394D00BB924E /* IJSVGRootNode.h in Headers */,
+				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 */,
+				5919111E28C7F1160047791B /* IJSVGBitFlags.h in Headers */,
+				59FE8E4428C7E70800AB38B3 /* IJSVGStop.h in Headers */,
+				5955731F286C643900156047 /* IJSVGTileLayer.h in Headers */,
+				59DB84E028C9F70000A9696A /* IJSVGBitFlags64.h in Headers */,
 				59EB760B23905F7300F5AE63 /* IJSVGStyleSheetSelector.h in Headers */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -623,7 +763,8 @@
 		594CF466238FF38E009B251B /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 1100;
+				BuildIndependentTargetsInParallel = YES;
+				LastUpgradeCheck = 1600;
 				ORGANIZATIONNAME = "Curtis Hard";
 				TargetAttributes = {
 					594CF46E238FF38E009B251B = {
@@ -664,18 +805,27 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				592607A0287D6C1000E93B09 /* IJSVGFeatureFlags.m in Sources */,
+				59FE8E4328C7E70800AB38B3 /* IJSVGStop.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 */,
+				590AA097280DE668002BBE12 /* IJSVGFilterEffectGaussianBlur.m in Sources */,
+				59F36509262F1ABB00BCE3FD /* IJSVGTraitedColor.m in Sources */,
 				59EB760123905F7300F5AE63 /* IJSVGLayerTree.m in Sources */,
+				59DB84E128C9F70000A9696A /* IJSVGBitFlags64.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 */,
+				594A10DB248D7C90001A3181 /* NSImage+IJSVGAdditions.m in Sources */,
 				59EB761923905F7300F5AE63 /* IJSVGCommandSmoothCurve.m in Sources */,
 				59EB761323905F7300F5AE63 /* IJSVG.m in Sources */,
 				59EB763623905F7300F5AE63 /* IJSVGImageLayer.m in Sources */,
@@ -683,41 +833,50 @@
 				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 */,
+				5919111F28C7F1160047791B /* IJSVGBitFlags.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 */,
-				59EB75FF23905F7300F5AE63 /* IJSVGBezierPathAdditions.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 */,
 				59EB760023905F7300F5AE63 /* IJSVGGradientLayer.m in Sources */,
 				59EB762B23905F7300F5AE63 /* IJSVGUnitLength.m in Sources */,
 				59EB75F823905F7300F5AE63 /* IJSVGCommandHorizontalLine.m in Sources */,
-				59EB75FA23905F7300F5AE63 /* IJSVGWriter.m in Sources */,
 				59EB764623905F7300F5AE63 /* IJSVGRendering.m in Sources */,
 				59EB762E23905F7300F5AE63 /* IJSVGExporter.m in Sources */,
 				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 */,
 				59EB762223905F7300F5AE63 /* IJSVGMath.m in Sources */,
+				59FCC09527F2394D00BB924E /* IJSVGRootNode.m in Sources */,
 				59EB763D23905F7300F5AE63 /* IJSVGGroup.m in Sources */,
 				59EB761F23905F7300F5AE63 /* IJSVGCommandLineTo.m in Sources */,
 				59EB75F123905F7300F5AE63 /* IJSVGUtils.m in Sources */,
@@ -755,6 +914,7 @@
 				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
@@ -763,13 +923,17 @@
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				COPY_PHASE_STRIP = NO;
 				CURRENT_PROJECT_VERSION = 1;
+				DEAD_CODE_STRIPPING = YES;
 				DEBUG_INFORMATION_FORMAT = dwarf;
+				DEFINES_MODULE = YES;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				ENABLE_TESTABILITY = YES;
+				ENABLE_USER_SCRIPT_SANDBOXING = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu11;
 				GCC_DYNAMIC_NO_PIC = NO;
 				GCC_NO_COMMON_BLOCKS = YES;
 				GCC_OPTIMIZATION_LEVEL = 0;
+				GCC_PREFIX_HEADER = "";
 				GCC_PREPROCESSOR_DEFINITIONS = (
 					"DEBUG=1",
 					"$(inherited)",
@@ -780,10 +944,15 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.13;
+				MACOSX_DEPLOYMENT_TARGET = "$(RECOMMENDED_MACOSX_DEPLOYMENT_TARGET)";
+				MODULEMAP_FILE = IJSVG.modulemap;
+				MODULE_VERIFIER_SUPPORTED_LANGUAGES = "objective-c objective-c++";
+				MODULE_VERIFIER_SUPPORTED_LANGUAGE_STANDARDS = "gnu11 gnu++14";
 				MTL_ENABLE_DEBUG_INFO = INCLUDE_SOURCE;
 				MTL_FAST_MATH = YES;
 				ONLY_ACTIVE_ARCH = YES;
+				OTHER_LDFLAGS = "-Wl,-no_warn_duplicate_libraries";
+				PRODUCT_MODULE_NAME = IJSVG;
 				SDKROOT = macosx;
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
@@ -816,6 +985,7 @@
 				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
@@ -824,20 +994,30 @@
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				COPY_PHASE_STRIP = NO;
 				CURRENT_PROJECT_VERSION = 1;
+				DEAD_CODE_STRIPPING = YES;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
+				DEFINES_MODULE = YES;
+				ENABLE_MODULE_VERIFIER = YES;
 				ENABLE_NS_ASSERTIONS = NO;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				ENABLE_USER_SCRIPT_SANDBOXING = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu11;
 				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_PREFIX_HEADER = "";
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
 				GCC_WARN_UNDECLARED_SELECTOR = YES;
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.13;
+				MACOSX_DEPLOYMENT_TARGET = "$(RECOMMENDED_MACOSX_DEPLOYMENT_TARGET)";
+				MODULEMAP_FILE = IJSVG.modulemap;
+				MODULE_VERIFIER_SUPPORTED_LANGUAGES = "objective-c objective-c++";
+				MODULE_VERIFIER_SUPPORTED_LANGUAGE_STANDARDS = "gnu11 gnu++14";
 				MTL_ENABLE_DEBUG_INFO = NO;
 				MTL_FAST_MATH = YES;
+				OTHER_LDFLAGS = "-Wl,-no_warn_duplicate_libraries";
+				PRODUCT_MODULE_NAME = IJSVG;
 				SDKROOT = macosx;
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
@@ -847,13 +1027,14 @@
 		594CF478238FF38E009B251B /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				CLANG_ENABLE_OBJC_ARC = NO;
+				CLANG_ENABLE_OBJC_ARC = YES;
 				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_STRICT_PROTOTYPES = YES;
+				CODE_SIGN_IDENTITY = "";
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
 				CURRENT_PROJECT_VERSION = 2;
-				DEFINES_MODULE = NO;
+				DEAD_CODE_STRIPPING = YES;
 				DEVELOPMENT_TEAM = 9KTR4W9XX6;
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
@@ -865,6 +1046,7 @@
 					"@executable_path/../Frameworks",
 					"@loader_path/Frameworks",
 				);
+				MACOSX_DEPLOYMENT_TARGET = 11.0;
 				MARKETING_VERSION = 2.2.0;
 				PRODUCT_BUNDLE_IDENTIFIER = com.iconjar.ijsvg;
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
@@ -875,13 +1057,14 @@
 		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_IDENTITY = "";
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
 				CURRENT_PROJECT_VERSION = 2;
-				DEFINES_MODULE = NO;
+				DEAD_CODE_STRIPPING = YES;
 				DEVELOPMENT_TEAM = 9KTR4W9XX6;
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
@@ -893,6 +1076,7 @@
 					"@executable_path/../Frameworks",
 					"@loader_path/Frameworks",
 				);
+				MACOSX_DEPLOYMENT_TARGET = 11.0;
 				MARKETING_VERSION = 2.2.0;
 				PRODUCT_BUNDLE_IDENTIFIER = com.iconjar.ijsvg;
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1140"
+   LastUpgradeVersion = "1600"
   version = "1.3">
   <BuildAction
      parallelizeBuildables = "YES"
@@ -15,7 +15,7 @@
 		<key>594CF46E238FF38E009B251B</key>
 		<dict>
 			<key>primary</key>
-			<true/>
+			<true />
 		</dict>
 	</dict>
 </dict>
@@ -19,6 +19,6 @@
 	<key>CFBundleVersion</key>
 	<string>$(CURRENT_PROJECT_VERSION)</string>
 	<key>NSHumanReadableCopyright</key>
-	<string>Copyright © 2019 Curtis Hard. All rights reserved.</string>
+	<string>Copyright © 2020 Curtis Hard. All rights reserved.</string>
 </dict>
 </plist>
@@ -1,19 +0,0 @@
-//
-//  IJSVGBezierPathAdditions.h
-//  IconJar
-//
-//  Created by Curtis Hard on 30/08/2014.
-//  Copyright (c) 2014 Curtis Hard. All rights reserved.
-//
-
-#import <AppKit/AppKit.h>
-#import <Foundation/Foundation.h>
-
-@interface NSBezierPath (IJSVGAdditions)
-
- (void)addQuadCurveToPoint:(NSPoint)aPoint
-               controlPoint:(NSPoint)cp;
-
- (CGPathRef)newCGPathRef:(BOOL)autoClose;
-
-@end
@@ -1,87 +0,0 @@
-//
-//  IJSVGBezierPathAdditions.m
-//  IconJar
-//
-//  Created by Curtis Hard on 30/08/2014.
-//  Copyright (c) 2014 Curtis Hard. All rights reserved.
-//
-
-#import "IJSVGBezierPathAdditions.h"
-
-@implementation NSBezierPath (IJSVGAdditions)
-
- (void)addQuadCurveToPoint:(CGPoint)QP2
-               controlPoint:(CGPoint)QP1
-{
-    CGPoint QP0 = [self currentPoint];
-    CGPoint CP3 = QP2;
-    CGPoint CP1 = CGPointMake(QP0.x + ((2.0 / 3.0) * (QP1.x - QP0.x)), QP0.y + ((2.0 / 3.0) * (QP1.y - QP0.y)));
-    CGPoint CP2 = CGPointMake(QP2.x + (2.0 / 3.0) * (QP1.x - QP2.x), QP2.y + (2.0 / 3.0) * (QP1.y - QP2.y));
-
-    [self curveToPoint:CP3
-         controlPoint1:CP1
-         controlPoint2:CP2];
-}
-
- (CGPathRef)newCGPathRef:(BOOL)autoClose
-{
-    NSInteger i = 0;
-    NSInteger numElements = self.elementCount;
-    NSBezierPath* bezPath = self;
-
-    // nothing to return
-    if (numElements == 0) {
-        return NULL;
-    }
-
-    CGMutablePathRef aPath = CGPathCreateMutable();
-
-    NSPoint points[3];
-    BOOL didClosePath = YES;
-
-    for (i = 0; i < numElements; i++) {
-        switch ([bezPath elementAtIndex:i associatedPoints:points]) {
-
-        // move
-        case NSMoveToBezierPathElement: {
-            CGPathMoveToPoint(aPath, NULL, points[0].x, points[0].y);
-            break;
-        }
-
-        // line
-        case NSLineToBezierPathElement: {
-            CGPathAddLineToPoint(aPath, NULL, points[0].x, points[0].y);
-            didClosePath = NO;
-            break;
-        }
-
-        // curve
-        case NSCurveToBezierPathElement: {
-            CGPathAddCurveToPoint(aPath, NULL, points[0].x, points[0].y,
-                points[1].x, points[1].y,
-                points[2].x, points[2].y);
-            didClosePath = NO;
-            break;
-        }
-
-        // close
-        case NSClosePathBezierPathElement: {
-            CGPathCloseSubpath(aPath);
-            didClosePath = YES;
-            break;
-        }
-        }
-    }
-
-    if (!didClosePath && autoClose) {
-        CGPathCloseSubpath(aPath);
-    }
-
-    // create immutable and release
-    CGPathRef pathToReturn = CGPathCreateCopy(aPath);
-    CGPathRelease(aPath);
-
-    return pathToReturn;
-}
-
-@end
@@ -14,5 +14,6 @@
 - (BOOL)ijsvg_isNumeric;
 - (BOOL)ijsvg_containsAlpha;
 - (NSArray*)ijsvg_componentsSplitByWhiteSpace;
+- (BOOL)ijsvg_isHexString;

@end
@@ -6,52 +6,39 @@
 //  Copyright © 2019 Curtis Hard. All rights reserved.
 //

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

@implementation NSString (IJSVGAdditions)

 - (NSArray<NSString*>*)ijsvg_componentsSeparatedByChars:(const char*)aChar
 {
-    NSMutableArray* comp = [[[NSMutableArray alloc] init] autorelease];
-    NSInteger length = self.length;
-    unichar* chars = (unichar*)calloc(sizeof(unichar), self.length);
-
-    NSInteger ind = 0;
-    BOOL startedString = NO;
-    const char* buffer = self.UTF8String;
-
-    for (NSInteger i = 0; i < length; i++) {
-        unichar theChar = buffer[i];
-
-        // start the buffer
-        BOOL isEqualToChar = strchr(aChar, theChar) != NULL;
-        if (isEqualToChar == NO) {
-            startedString = YES;
-            chars[ind++] = theChar;
-        }
-
-        // has started and char is the search char, or its at end
-        if ((startedString == YES && isEqualToChar) || (i == (length - 1) && startedString == YES)) {
-            startedString = NO;
-
-            // append the comp
-            [comp addObject:[NSString stringWithCharacters:chars length:ind]];
-
-            // restart and realloc the memory
-            ind = 0;
-            chars = memset(chars, '\0', sizeof(unichar) * ind);
-        }
+    char* chars = (char*)self.UTF8String;
+    if(chars == NULL || strlen(chars) == 0) {
+        return @[];
    }
-    free(chars);
-    return comp;
+    NSMutableArray<NSString*>* strings = nil;
+    strings = [[NSMutableArray alloc] init];
+    char* copy = strdup(chars);
+    char* spt = NULL;
+    char* ptr = strtok_r(copy, aChar, &spt);
+    while(ptr != NULL) {
+        NSString* possibleString = nil;
+        if((possibleString = [NSString stringWithUTF8String:ptr]) != nil) {
+            [strings addObject:possibleString];
+        }
+        ptr = strtok_r(NULL, aChar, &spt);
+    }
+    (void)free(copy), copy = NULL;
+    return strings;
 }

 - (BOOL)ijsvg_containsAlpha
 {
    const char* buffer = self.UTF8String;
-    unsigned long length = strlen(buffer);
-    for (int i = 0; i < length; i++) {
-        if (isalpha(buffer[i])) {
+    char currentChar;
+    while((currentChar = *buffer++) ) {
+        if(isalpha(currentChar)) {
            return YES;
        }
    }
@@ -61,9 +48,9 @@
 - (BOOL)ijsvg_isNumeric
 {
    const char* buffer = self.UTF8String;
-    unsigned long length = strlen(buffer);
-    for (int i = 0; i < length; i++) {
-        if (!isnumber(buffer[i])) {
+    char currentChar;
+    while((currentChar = *buffer++) ) {
+        if(!isnumber(currentChar)) {
            return NO;
        }
    }
@@ -75,4 +62,10 @@
    return [self ijsvg_componentsSeparatedByChars:"\t\n\r "];
 }

+- (BOOL)ijsvg_isHexString
+{
+    const char* chars = self.UTF8String;
+    return IJSVGCharBufferIsHEX((char*)chars);
+}
+
@end
@@ -0,0 +1,18 @@
+//
+//  NSImage+IJSVGAdditions.h
+//  IJSVG
+//
+//  Created by Curtis Hard on 07/06/2020.
+//  Copyright © 2020 Curtis Hard. All rights reserved.
+//
+
+#import <AppKit/AppKit.h>
+#import <Cocoa/Cocoa.h>
+
+IJSVG* IJSVGGetFromNSImage(NSImage* image);
+
+@interface NSImage (IJSVGAdditions)
+
+ (NSImage*)SVGImageNamed:(NSString*)imageName;
+
+@end
@@ -0,0 +1,53 @@
+//
+//  NSImage+IJSVGAdditions.m
+//  IJSVG
+//
+//  Created by Curtis Hard on 07/06/2020.
+//  Copyright © 2020 Curtis Hard. All rights reserved.
+//
+
+#import <IJSVG/IJSVGImageRep.h>
+#import <IJSVG/NSImage+IJSVGAdditions.h>
+
+IJSVG* IJSVGGetFromNSImage(NSImage* image)
+{
+    for (NSImageRep* rep in image.representations) {
+        if([rep isKindOfClass:IJSVGImageRep.class]) {
+            return ((IJSVGImageRep*)rep).SVG;
+        }
+    }
+    return nil;
+}
+
+@implementation NSImage (IJSVGAdditions)
+
+ (NSImage*)SVGImageNamed:(NSString*)imageName
+{
+    // find the image
+    NSBundle* bundle = NSBundle.mainBundle;
+    NSString* str = nil;
+    NSString* ext = imageName.pathExtension;
+    if(ext == nil || ext.length == 0) {
+        ext = @"svg";
+    }
+
+    if((str = [bundle pathForResource:imageName.stringByDeletingPathExtension
+                                ofType:ext])
+        != nil) {
+
+        // work out if we can get the data
+        NSData* data = [[NSData alloc] initWithContentsOfFile:str];
+        if(data == nil) {
+            return nil;
+        }
+
+        // grab the image rep
+        IJSVGImageRep* rep = [[IJSVGImageRep alloc] initWithData:data];
+        NSImage* image = [[NSImage alloc] init];
+        [image addRepresentation:rep];
+        return image;
+    }
+    return nil;
+}
+
+@end
@@ -167,6 +167,8 @@ typedef NS_ENUM(NSInteger, IJSVGPredefinedColor) {
    IJSVGColorYellowgreen
 };

+extern NSString* const IJSVGColorCurrentColorName;
+
@interface IJSVGColor : NSObject

 CGFloat* IJSVGColorCSSHSLToHSB(CGFloat hue, CGFloat saturation, CGFloat lightness);
@@ -179,6 +181,7 @@ CGFloat* IJSVGColorCSSHSLToHSB(CGFloat hue, CGFloat saturation, CGFloat lightnes
 + (NSString*)colorStringFromColor:(NSColor*)color;
 + (NSColor*)colorFromHEXInteger:(NSInteger)hex;
 + (NSColor*)computeColor:(id)colour;
+ (BOOL)isNoneOrTransparent:(NSString*)string;
 + (NSColor*)colorFromString:(NSString*)string;
 + (NSColor*)colorFromHEXString:(NSString*)string;
 + (NSColor*)colorFromHEXString:(NSString*)string
@@ -6,13 +6,19 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGColor.h"
-#import "IJSVGUtils.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";

@implementation IJSVGColor

 static NSDictionary* _colorTree = nil;

+
 CGFloat* IJSVGColorCSSHSLToHSB(CGFloat hue, CGFloat saturation, CGFloat lightness)
 {
    hue *= (1.f / 360.f);
@@ -23,7 +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));
@@ -46,7 +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;
@@ -56,7 +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),
@@ -202,13 +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;
 }
@@ -239,39 +245,71 @@ CGFloat* IJSVGColorCSSHSLToHSB(CGFloat hue, CGFloat saturation, CGFloat lightnes
                                                         alpha:a]];
 }

+ (BOOL)isNoneOrTransparent:(NSString*)string
+{
+    const char* str = string.UTF8String;
+    return IJSVGCharBufferCaseInsensitiveCompare(str, "none") == YES ||
+        IJSVGCharBufferCaseInsensitiveCompare(str, "transparent") == YES;
+}
+
 + (NSColor*)colorFromString:(NSString*)string
 {
-    NSCharacterSet* set = NSCharacterSet.whitespaceAndNewlineCharacterSet;
-    string = [string stringByTrimmingCharactersInSet:set];
-
-    if ([string length] < 3) {
+    // swap over to C for performance
+    if(string == nil) {
        return nil;
    }
-
-    NSColor* color = nil;
-    string = [string lowercaseString];
-    if ([self.class isHex:string] == NO) {
-        color = [self.class colorFromPredefinedColorName:string];
-        if (color != nil) {
-            return color;
-        }
+    
+    const char* oString = string.UTF8String;
+    if(strlen(oString) == 0) {
+        return nil;
    }
-
-    // is simply a clear color, dont fill
-    if ([string.lowercaseString isEqualToString:@"none"] ||
-        [string.lowercaseString isEqualToString:@"transparent"]) {
-        return [self computeColorSpace:NSColor.clearColor];
+    
+    char* str = IJSVGTimmedCharBufferCreate(oString);
+    if(IJSVGCharBufferIsHEX(str) == YES) {
+        string = [NSString stringWithUTF8String:str];
+        (void)free(str), str = NULL;
+        return [self.class colorFromHEXString:string];
    }

    // is it RGB?
-    if ([string hasPrefix:@"rgb"] == YES) {
-        NSRange range = [IJSVGUtils rangeOfParentheses:string];
-        NSString* rgbString = [string substringWithRange:range];
-        NSArray* parts = [rgbString ijsvg_componentsSeparatedByChars:","];
+    if(IJSVGCharBufferHasPrefix(str, "rgb") == YES) {
+        NSUInteger count = 0;
+        IJSVGParsingStringMethod** methods = NULL;
+        methods = IJSVGParsingMethodParseString(str, &count);
+        IJSVGParsingStringMethod* method = methods[0];
+        
+        // memory clean for the string
+        (void)free(str), str = NULL;
+        
+        // nothing to return, just mem clean and get out of here
+        if(count == 0 || methods == NULL) {
+            if(methods != NULL) {
+                IJSVGParsingStringMethodsRelease(methods, count);
+                methods = NULL;
+            }
+            return nil;
+        }
+        
+        // Make sure we have actual floats within the parameters
+        NSInteger floatCount = 0;
+        CGFloat *params = [IJSVGUtils scanFloatsFromCString:method->parameters
+                                                       size:&floatCount];
+        (void)free(params), params = NULL;
+        if(floatCount < 3) {
+            return [self computeColorSpace:NSColor.blackColor];
+        }
+        
+        // Make sure the floats are not negative
+        // parse the parameters
+        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];
        }
+        
+        IJSVGParsingStringMethodsRelease(methods, count);
+        methods = NULL;
        return [self colorFromRString:parts[0]
                              gString:parts[1]
                              bString:parts[2]
@@ -279,39 +317,48 @@ CGFloat* IJSVGColorCSSHSLToHSB(CGFloat hue, CGFloat saturation, CGFloat lightnes
    }

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

        // convert HSL to HSB
        CGFloat* hsb = IJSVGColorCSSHSLToHSB(params[0], params[1], params[2]);
-        color = [NSColor colorWithDeviceHue:hsb[0]
-                                 saturation:hsb[1]
-                                 brightness:hsb[2]
-                                      alpha:alpha];
+        NSColor* color = [NSColor colorWithDeviceHue:hsb[0]
+                                          saturation:hsb[1]
+                                          brightness:hsb[2]
+                                               alpha:alpha];

        color = [self computeColorSpace:color];

        // memory clean!
-        free(hsb);
-        free(params);
+        (void)free(str), str = NULL;
+        (void)free(hsb), hsb = NULL;
+        (void)free(params), params = NULL;
        return color;
    }
-
-    color = [self.class colorFromHEXString:string];
-    return color;
+    
+    // is simply a clear color, dont fill
+    if(IJSVGCharBufferCompare(str, "none") == YES ||
+        IJSVGCharBufferCompare(str, "transparent") == YES) {
+        (void)free(str), str = NULL;
+        return nil;
+    }
+    
+    // could return nil
+    (void)free(str), str = NULL;
+    return [self.class colorFromPredefinedColorName:string];
 }

 + (NSColor*)colorFromPredefinedColorName:(NSString*)name
 {
    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];
@@ -340,33 +387,33 @@ 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",
@@ -377,7 +424,7 @@ 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)];
        }
@@ -707,14 +754,7 @@ CGFloat* IJSVGColorCSSHSLToHSB(CGFloat hue, CGFloat saturation, CGFloat lightnes

 + (BOOL)isHex:(NSString*)string
 {
-    const char* validList = "0123456789ABCDEFabcdef#";
-    for (NSInteger i = 0; i < string.length; i++) {
-        char c = [string characterAtIndex:i];
-        if (strchr(validList, c) == NULL) {
-            return NO;
-        }
-    }
-    return YES;
+    return string.ijsvg_isHexString;
 }

 + (unsigned long)lengthOfHEXInteger:(NSUInteger)hex
@@ -734,7 +774,7 @@ 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;
    }
@@ -760,29 +800,39 @@ CGFloat* IJSVGColorCSSHSLToHSB(CGFloat hue, CGFloat saturation, CGFloat lightnes
        containsAlphaComponent:(BOOL*)containsAlphaComponent
 {
    // absolutely no string
-    if (string == nil || string.length == 0 || ![self.class isHex:string]) {
+    if(string == nil) {
+        return nil;
+    }
+    
+    char* str = (char*)string.UTF8String;
+    size_t length = strlen(str);
+    if(length == 0 || IJSVGCharBufferIsHEX(str) == NO) {
        return nil;
    }

-    if ([string hasPrefix:@"#"] == YES) {
-        string = [string substringFromIndex:1];
+    // remove the hash from the front of the string
+    if(str[0] == '#') {
+        length--;
+        str++;
    }

-    // whats the length?
-    NSUInteger length = string.length;
-    if (length == 3 || length == 4) {
-        // shorthand...
-        NSMutableString* str = [[[NSMutableString alloc] init] autorelease];
-        for (NSInteger i = 0; i < length; i++) {
-            NSString* sub = [string substringWithRange:NSMakeRange(i, 1)];
-            [str appendFormat:@"%@%@", sub, sub];
+    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) {
+        char* chars = NULL;
+        chars = (char*)calloc(sizeof(char),length*2+1);
+        for(int i = 0; i < length; i++) {
+            chars[i*2] = chars[i*2+1] = str[i];
        }
-        string = str;
+        hex = strtoul(chars, NULL, 16);
+        (void)free(chars), chars = NULL;
+    } else {
+        hex = strtoul(str, NULL, 16);
    }
-
+    
    // now convert rest to hex
-    unsigned long hex = [self HEXFromArbitraryHexString:string];
-    if (containsAlphaComponent != nil) {
+    if(containsAlphaComponent != nil) {
        *containsAlphaComponent = [self HEXContainsAlphaComponent:hex];
    }
    return [self colorFromHEXInteger:hex];
@@ -1,31 +0,0 @@
-//
-//  IJSVGColorList.h
-//  IconJar
-//
-//  Created by Curtis Hard on 07/07/2019.
-//  Copyright © 2019 Curtis Hard. All rights reserved.
-//
-
-#import "IJSVGColor.h"
-#import <Foundation/Foundation.h>
-
-@interface IJSVGColorList : NSObject <NSCopying> {
-
-@private
-    NSMutableDictionary<NSColor*, NSColor*>* _replacementColorTree;
-    NSMutableSet<NSColor*>* _colors;
-}
-
- (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<NSColor*>*)colors;
- (void)addColor:(NSColor*)color;
-
-@end
@@ -1,112 +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<NSColor*>*)colors
-{
-    return [NSSet setWithSet:_colors];
-}
-
- (void)addColorsFromList:(IJSVGColorList*)sheet
-{
-    [_colors addObjectsFromArray:sheet.colors.allObjects];
-}
-
- (void)addColor:(NSColor*)color
-{
-    [_colors addObject:[IJSVGColor computeColorSpace:color]];
-}
-
- (void)removeColor:(NSColor*)color
-{
-    [_colors removeObject:[IJSVGColor computeColorSpace:color]];
-}
-
-@end
@@ -0,0 +1,32 @@
+//
+//  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*)typeWithColor:(NSColor*)color
+                          traits:(IJSVGColorUsageTraits)mask;
+
+@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
@@ -6,8 +6,8 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

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

 static const NSInteger IJSVGCustomVariableParameterCount = NSNotFound;
@@ -17,25 +17,16 @@ typedef NS_ENUM(NSInteger, IJSVGCommandType) {
    kIJSVGCommandTypeRelative
 };

-@interface IJSVGCommand : NSObject {
-    NSString* commandString;
-    char command;
-    CGFloat* parameters;
-    NSInteger parameterCount;
-    NSArray<IJSVGCommand*>* subCommands;
-    NSInteger requiredParameters;
-    IJSVGCommandType type;
-    IJSVGCommand* previousCommand;
+@interface IJSVGCommand : NSObject <NSCopying> {
+@private
    NSInteger _currentIndex;
-    BOOL isSubCommand;
 }

-@property (nonatomic, copy) NSString* commandString;
@property (nonatomic, assign) char command;
@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;

@@ -49,17 +40,30 @@ typedef NS_ENUM(NSInteger, IJSVGCommandType) {
              command:(IJSVGCommand*)currentCommand
      previousCommand:(IJSVGCommand*)command
                 type:(IJSVGCommandType)type
-                 path:(IJSVGPath*)path;
+                 path:(CGMutablePathRef)path;
 + (void)parseParams:(CGFloat*)params
         paramCount:(NSInteger)paramCount
          intoArray:(NSMutableArray<IJSVGCommand*>*)commands
      parentCommand:(IJSVGCommand*)parentCommand;

- (id)initWithCommandString:(NSString*)str
-                 dataStream:(IJSVGPathDataStream*)dataStream;
+ (NSArray<IJSVGCommand*>*)commandsForDataCharacters:(const char*)buffer;
+ (NSArray<IJSVGCommand*>*)commandsForDataCharacters:(const char*)buffer
+                                          dataStream:(IJSVGPathDataStream*)dataStream;
+ (CGMutablePathRef)newPathForCommandsArray:(NSArray<IJSVGCommand*>*)commands;
+
+ (NSArray<IJSVGCommand*>*)convertCommands:(NSArray<IJSVGCommand*>*)commands
+                                   toUnits:(IJSVGUnitType)unitType
+                                    bounds:(CGRect)bounds;
+
+- (id)initWithCommandStringBuffer:(const char*)str
+                       dataStream:(IJSVGPathDataStream*)dataStream;
 - (IJSVGCommand*)subcommandWithParameters:(CGFloat*)subParams
                               paramCount:(NSInteger)paramCount
                          previousCommand:(IJSVGCommand*)command;
+- (void)convertToUnits:(IJSVGUnitType)units
+           boundingBox:(CGRect)boundingBox;
+- (IJSVGCommand*)commandByConvertingToUnits:(IJSVGUnitType)unitType
+                                boundingBox:(CGRect)boundingBox;

 - (CGFloat)readFloat;
 - (NSPoint)readPoint;
@@ -6,31 +6,22 @@
 //  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

-@synthesize commandString;
-@synthesize command;
-@synthesize parameterCount;
-@synthesize parameters;
-@synthesize subCommands;
-@synthesize type;
-@synthesize previousCommand;
-@synthesize isSubCommand;
-
 + (BOOL)requiresCustomParameterParsing
 {
    return NO;
@@ -51,7 +42,7 @@
              command:(IJSVGCommand*)currentCommand
      previousCommand:(IJSVGCommand*)command
                 type:(IJSVGCommandType)type
-                 path:(IJSVGPath*)path
+                 path:(CGMutablePathRef)path
 {
 }

@@ -101,39 +92,139 @@
    return nil;
 }

- (void)dealloc
+ (CGMutablePathRef)newPathForCommandsArray:(NSArray<IJSVGCommand*>*)commands
 {
-    (void)([commandString release]), commandString = nil;
-    (void)([subCommands release]), subCommands = nil;
-    if (parameters) {
-        (void)(free(parameters)), parameters = nil;
+    CGMutablePathRef path = CGPathCreateMutable();
+    IJSVGCommand* preCommand = nil;
+    for(IJSVGCommand* command in commands) {
+        for (IJSVGCommand* subCommand in command.subCommands) {
+            [command.class runWithParams:subCommand.parameters
+                              paramCount:subCommand.parameterCount
+                                 command:subCommand
+                         previousCommand:preCommand
+                                    type:subCommand.type
+                                    path:path];
+            preCommand = subCommand;
+        }
    }
-    [super dealloc];
+    return path;
 }

- (id)initWithCommandString:(NSString*)str
-                 dataStream:(IJSVGPathDataStream*)dataStream
+ (NSArray<IJSVGCommand*>*)commandsForDataCharacters:(const char*)buffer
 {
-    if ((self = [super init]) != nil) {
+    IJSVGThreadManager* manager = IJSVGThreadManager.currentManager;
+    NSArray<IJSVGCommand*>* commands = [self commandsForDataCharacters:buffer
+                                                            dataStream:manager.pathDataStream];
+    return commands;
+}
+
+ (NSArray<IJSVGCommand*>*)commandsForDataCharacters:(const char*)unsafeBuffer
+                                          dataStream:(IJSVGPathDataStream*)dataStream
+{
+    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(bufferLength);
+    NSInteger start = 0;
+    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) {
+
+            // copy memory from current buffer
+            NSInteger index = ((i + 1) - start);
+            memcpy(&charBuffer[0], &buffer[start], sizeof(char)*index);
+            charBuffer[index] = '\0';
+
+            // create the command from the substring
+            unsigned long length = index + 1;
+            size_t mlength = sizeof(char)*length;
+            char* commandString = (char*)malloc(mlength);
+            memcpy(commandString, &charBuffer[0], mlength);
+
+            // reset start position
+            start = (i + 1);
+
+            // previous command is actual subcommand
+            Class commandClass = [IJSVGCommand commandClassForCommandChar:commandString[0]];
+            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;
+}
+
+ (NSArray<IJSVGCommand*>*)convertCommands:(NSArray<IJSVGCommand*>*)commands
+                                   toUnits:(IJSVGUnitType)unitType
+                                    bounds:(CGRect)bounds
+{
+    NSMutableArray<IJSVGCommand*>* newCommands = nil;
+    newCommands = [[NSMutableArray alloc] initWithCapacity:commands.count];
+    for(IJSVGCommand* command in commands) {
+        IJSVGCommand* nCommand = [command commandByConvertingToUnits:unitType
+                                                         boundingBox:bounds];
+        [newCommands addObject:nCommand];
+    }
+    return newCommands;
+}
+
+- (void)dealloc
+{
+    if(_parameters) {
+        (void)(free(_parameters)), _parameters = nil;
+    }
+}
+
+- (id)initWithCommandStringBuffer:(const char*)str
+                       dataStream:(IJSVGPathDataStream*)dataStream
+{
+    if((self = [super init]) != nil) {
        // work out the basics
        _currentIndex = 0;
-        command = [str characterAtIndex:0];
-        type = [IJSVGUtils typeForCommandChar:command];
+        _command = str[0];
+        _type = [IJSVGUtils typeForCommandChar:_command];
        NSInteger sets = 0;
        NSInteger paramCount = [self.class requiredParameterCount];
        IJSVGPathDataSequence* sequence = [self.class pathDataSequence];
-        parameters = IJSVGParsePathDataStreamSequence(str.UTF8String, str.length,
-            dataStream, sequence, [self.class requiredParameterCount], &sets);
+        _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;
@@ -154,17 +245,47 @@
            }

            // store the retained value
-            subCommands = subCommandArray.copy;
+            _subCommands = subCommandArray.copy;
        }
    }
    return self;
 }

+- (void)setSubCommands:(NSArray<IJSVGCommand*>*)subCommands
+{
+    _subCommands = subCommands;
+}
+
+- (id)copyWithZone:(NSZone *)zone
+{
+    IJSVGCommand* command = [[self.class alloc] init];
+    command.type = self.type;
+    command.command = self.command;
+    command.isSubCommand = self.isSubCommand;
+    command.parameterCount = self.parameterCount;
+    size_t memsize = sizeof(CGFloat)*self.parameterCount;
+    command.parameters = (CGFloat*)malloc(memsize);
+    memcpy(command.parameters, self.parameters, memsize);
+    
+    
+    IJSVGCommand* lastCommand = nil;
+    NSMutableArray<IJSVGCommand*>* subcommands = nil;
+    subcommands = [[NSMutableArray alloc] initWithCapacity:self.subCommands.count];
+    for(IJSVGCommand* subcommand in self.subCommands) {
+        IJSVGCommand* subCopy = subcommand.copy;
+        subCopy.previousCommand = lastCommand;
+        subCopy.isSubCommand = lastCommand != nil;
+        [subcommands addObject:subCopy];
+    }
+    command.subCommands = subcommands;
+    return command;
+}
+
 - (CGFloat*)parametersFromIndexOffset:(NSInteger)index
 {
    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);
    }
@@ -176,7 +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;
@@ -188,15 +309,15 @@

 - (CGFloat)readFloat
 {
-    CGFloat f = parameters[_currentIndex];
+    CGFloat f = _parameters[_currentIndex];
    _currentIndex++;
    return f;
 }

 - (NSPoint)readPoint
 {
-    CGFloat x = parameters[_currentIndex];
-    CGFloat y = parameters[_currentIndex + 1];
+    CGFloat x = _parameters[_currentIndex];
+    CGFloat y = _parameters[_currentIndex + 1];
    _currentIndex += 2;
    return NSMakePoint(x, y);
 }
@@ -211,4 +332,34 @@
    _currentIndex = 0;
 }

+- (void)convertToUnits:(IJSVGUnitType)units
+           boundingBox:(CGRect)boundingBox
+{
+    for(IJSVGCommand* command in _subCommands) {
+        [command convertToUnits:units
+                    boundingBox:boundingBox];
+    }
+}
+
+- (NSString *)description
+{
+    NSMutableString* str = [[NSMutableString alloc] init];
+    [str appendFormat:@"%c ",_command];
+    NSMutableArray* args = [[NSMutableArray alloc] initWithCapacity:_parameterCount];
+    for(int i = 0; i < _parameterCount; i++) {
+        [args addObject:[NSString stringWithFormat:@"%f",_parameters[i]]];
+    }
+    [str appendString:[args componentsJoinedByString:@", "]];
+    return str;
+}
+
+- (IJSVGCommand*)commandByConvertingToUnits:(IJSVGUnitType)unitType
+                                boundingBox:(CGRect)boundingBox
+{
+    IJSVGCommand* copy = self.copy;
+    [copy convertToUnits:unitType
+             boundingBox:boundingBox];
+    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

@@ -20,9 +20,9 @@
              command:(IJSVGCommand*)currentCommand
      previousCommand:(IJSVGCommand*)command
                 type:(IJSVGCommandType)type
-                 path:(IJSVGPath*)path
+                 path:(CGMutablePathRef)path
 {
-    [path close];
+    CGPathCloseSubpath(path);
 }

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

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

@implementation IJSVGCommandCurve

@@ -20,17 +20,19 @@
              command:(IJSVGCommand*)currentCommand
      previousCommand:(IJSVGCommand*)command
                 type:(IJSVGCommandType)type
-                 path:(IJSVGPath*)path
+                 path:(CGMutablePathRef)path
 {
-    if (type == kIJSVGCommandTypeAbsolute) {
-        [path.path curveToPoint:NSMakePoint(params[4], params[5])
-                  controlPoint1:NSMakePoint(params[0], params[1])
-                  controlPoint2:NSMakePoint(params[2], params[3])];
+    if(type == kIJSVGCommandTypeAbsolute) {
+        CGPathAddCurveToPoint(path, NULL, params[0], params[1],
+                              params[2], params[3],
+                              params[4], params[5]);
        return;
    }
-    [path.path relativeCurveToPoint:NSMakePoint(params[4], params[5])
-                      controlPoint1:NSMakePoint(params[0], params[1])
-                      controlPoint2:NSMakePoint(params[2], params[3])];
+    CGPoint currentPoint = CGPathGetCurrentPoint(path);
+    CGPathAddCurveToPoint(path, NULL,
+                          currentPoint.x + params[0], currentPoint.y + params[1],
+                          currentPoint.x + params[2], currentPoint.y + params[3],
+                          currentPoint.x + params[4], currentPoint.y + params[5]);
 }

@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 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

@@ -20,7 +20,8 @@ static IJSVGPathDataSequence* _sequence;

 + (IJSVGPathDataSequence*)pathDataSequence
 {
-    if(_sequence == NULL) {
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
        _sequence = (IJSVGPathDataSequence*)malloc(sizeof(IJSVGPathDataSequence) * 7);
        _sequence[0] = kIJSVGPathDataSequenceTypeFloat;
        _sequence[1] = kIJSVGPathDataSequenceTypeFloat;
@@ -29,96 +30,110 @@ static IJSVGPathDataSequence* _sequence;
        _sequence[4] = kIJSVGPathDataSequenceTypeFlag;
        _sequence[5] = kIJSVGPathDataSequenceTypeFloat;
        _sequence[6] = kIJSVGPathDataSequenceTypeFloat;
-    }
+    });
    return _sequence;
 }

+// modified from https://github.com/SVGKit/SVGKit/blob/880c94a5b77b6f22beb491a7a7e02ace220c32af/Source/Parsers/SVGKPointsAndPathsParser.m
 + (void)runWithParams:(CGFloat*)params
           paramCount:(NSInteger)count
              command:(IJSVGCommand*)currentCommand
      previousCommand:(IJSVGCommand*)command
                 type:(IJSVGCommandType)type
-                 path:(IJSVGPath*)path
+                 path:(CGMutablePathRef)path
 {
    CGPoint radii = CGPointZero;
    CGPoint arcEndPoint = CGPointZero;
-    CGPoint arcStartPoint = path.currentPoint;
-    CGFloat xAxisRotation = 0;
-    BOOL largeArcFlag = 0;
-    BOOL sweepFlag = 0;
-
-    radii = [currentCommand readPoint];
-    xAxisRotation = [currentCommand readFloat];
-    largeArcFlag = [currentCommand readBOOL];
-    sweepFlag = [currentCommand readBOOL];
-    arcEndPoint = [currentCommand readPoint];
-
-    if (type == kIJSVGCommandTypeRelative) {
-        arcEndPoint.x += path.currentPoint.x;
-        arcEndPoint.y += path.currentPoint.y;
-    }
-
+    CGPoint pathCurrentPoint = CGPathGetCurrentPoint(path);
+    CGFloat xAxisRotation = 0.f;
+    BOOL largeArcFlag = NO;
+    BOOL sweepFlag = NO;
+    
+    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);
+    
    xAxisRotation *= M_PI / 180.f;
-    CGPoint currentPoint = CGPointMake(cos(xAxisRotation) * (arcStartPoint.x - arcEndPoint.x) / 2.0 + sin(xAxisRotation) * (arcStartPoint.y - arcEndPoint.y) / 2.0, -sin(xAxisRotation) * (arcStartPoint.x - arcEndPoint.x) / 2.0 + cos(xAxisRotation) * (arcStartPoint.y - arcEndPoint.y) / 2.0);
+    xAxisRotation = fmod(xAxisRotation, 2.f * M_PI);

-    CGFloat radiiAdjustment = pow(currentPoint.x, 2) / pow(radii.x, 2) + pow(currentPoint.y, 2) / pow(radii.y, 2);
-    radii.x *= (radiiAdjustment > 1) ? sqrt(radiiAdjustment) : 1;
-    radii.y *= (radiiAdjustment > 1) ? sqrt(radiiAdjustment) : 1;
-
-    CGFloat sweep = (largeArcFlag == sweepFlag ? -1 : 1) * sqrt(((pow(radii.x, 2) * pow(radii.y, 2)) - (pow(radii.x, 2) * pow(currentPoint.y, 2)) - (pow(radii.y, 2) * pow(currentPoint.x, 2))) / (pow(radii.x, 2) * pow(currentPoint.y, 2) + pow(radii.y, 2) * pow(currentPoint.x, 2)));
-    sweep = (sweep != sweep) ? 0 : sweep;
-    CGPoint preCenterPoint = CGPointMake(sweep * radii.x * currentPoint.y / radii.y, sweep * -radii.y * currentPoint.x / radii.x);
-
-    CGPoint centerPoint = CGPointMake((arcStartPoint.x + arcEndPoint.x) / 2.0 + cos(xAxisRotation) * preCenterPoint.x - sin(xAxisRotation) * preCenterPoint.y, (arcStartPoint.y + arcEndPoint.y) / 2.0 + sin(xAxisRotation) * preCenterPoint.x + cos(xAxisRotation) * preCenterPoint.y);
-
-    CGFloat startAngle = angle(CGPointMake(1, 0), CGPointMake((currentPoint.x - preCenterPoint.x) / radii.x, (currentPoint.y - preCenterPoint.y) / radii.y));
-
-    CGPoint deltaU = CGPointMake((currentPoint.x - preCenterPoint.x) / radii.x,
-        (currentPoint.y - preCenterPoint.y) / radii.y);
-    CGPoint deltaV = CGPointMake((-currentPoint.x - preCenterPoint.x) / radii.x,
-        (-currentPoint.y - preCenterPoint.y) / radii.y);
-    CGFloat angleDelta = (deltaU.x * deltaV.y < deltaU.y * deltaV.x ? -1 : 1) * acos(ratio(deltaU, deltaV));
-
-    angleDelta = (ratio(deltaU, deltaV) <= -1) ? M_PI : (ratio(deltaU, deltaV) >= 1) ? 0 : angleDelta;
-
-    // check for actually numbers, if this is not valid
-    // kill it, blame WWDC 2017 SVG background for this...
-    if (isnan(startAngle) || isnan(angleDelta)) {
+    if(type == kIJSVGCommandTypeRelative) {
+        arcEndPoint.x += pathCurrentPoint.x;
+        arcEndPoint.y += pathCurrentPoint.y;
+    }
+    
+    CGFloat x1 = pathCurrentPoint.x;
+    CGFloat y1 = pathCurrentPoint.y;
+    
+    CGFloat x2 = arcEndPoint.x;
+    CGFloat y2 = arcEndPoint.y;
+    
+    if(rx == 0.f || ry == 0.f) {
+        CGPathAddLineToPoint(path, NULL, x2, y2);
        return;
    }
+    
+    CGFloat cosPhi = cos(xAxisRotation);
+    CGFloat sinPhi = sin(xAxisRotation);
+    
+    CGFloat x1p = cosPhi * (x1 - x2) / 2.f + sinPhi * (y1 - y2) / 2.f;
+    CGFloat y1p = -sinPhi * (x1 - x2) / 2.f + cosPhi * (y1 - y2) / 2.f;
+    
+    CGFloat rx_2 = rx * rx;
+    CGFloat ry_2 = ry * ry;
+    CGFloat xp_2 = x1p * x1p;
+    CGFloat yp_2 = y1p * y1p;

-    CGFloat radius = MAX(radii.x, radii.y);
-    CGPoint scale = (radii.x > radii.y) ? CGPointMake(1, radii.y / radii.x) : CGPointMake(radii.x / radii.y, 1);
+    CGFloat delta = xp_2 / rx_2 + yp_2 / ry_2;
+    
+    if(delta > 1.f) {
+        rx *= sqrt(delta);
+        ry *= sqrt(delta);
+        rx_2 = rx * rx;
+        ry_2 = ry * ry;
+    }
+    
+    CGFloat sign = (largeArcFlag == sweepFlag) ? -1.f : 1.f;
+    CGFloat numerator = MAX(0.f, rx_2 * ry_2 - rx_2 * yp_2 - ry_2 * xp_2);
+    CGFloat denom = rx_2 * yp_2 + ry_2 * xp_2;
+    CGFloat lhs = denom == 0.f ? 0.f : sign * sqrt(numerator / denom);
+    
+    CGFloat cxp = lhs * (rx * y1p) / ry;
+    CGFloat cyp = lhs * -((ry * x1p) / rx);
+    
+    CGFloat cx = cosPhi * cxp + -sinPhi * cyp + (x1 + x2) / 2.f;
+    CGFloat cy = cxp * sinPhi + cyp * cosPhi + (y1 + y2) / 2.f;

-    NSAffineTransform* trans = NSAffineTransform.transform;
-    [trans translateXBy:-centerPoint.x yBy:-centerPoint.y];
-    [path.path transformUsingAffineTransform:trans];
+    CGAffineTransform transform = CGAffineTransformMakeScale(1.f / rx, 1.f / ry);
+    transform = CGAffineTransformRotate(transform, -xAxisRotation);
+    transform = CGAffineTransformTranslate(transform, -cx, -cy);
+    
+    CGPoint arcPt1 = CGPointApplyAffineTransform(CGPointMake(x1, y1), transform);
+    CGPoint arcPt2 = CGPointApplyAffineTransform(CGPointMake(x2, y2), transform);
+        
+    CGFloat startAngle = atan2(arcPt1.y, arcPt1.x);
+    CGFloat endAngle = atan2(arcPt2.y, arcPt2.x);
+    
+    CGFloat angleDelta = endAngle - startAngle;;
+    
+    if(sweepFlag == YES) {
+        if(angleDelta < 0.f) {
+            angleDelta += 2.f * M_PI;
+        }
+    } else if(angleDelta > 0.f) {
+        angleDelta = angleDelta - 2.f * M_PI;
+    }
+    
+    transform = CGAffineTransformMakeTranslation(cx, cy);
+    transform = CGAffineTransformRotate(transform, xAxisRotation);
+    transform = CGAffineTransformScale(transform, rx, ry);

-    trans = NSAffineTransform.transform;
-    [trans rotateByRadians:-xAxisRotation];
-    [path.path transformUsingAffineTransform:trans];
-
-    trans = NSAffineTransform.transform;
-    [trans scaleXBy:(1 / scale.x) yBy:(1 / scale.y)];
-    [path.path transformUsingAffineTransform:trans];
-
-    [path.path appendBezierPathWithArcWithCenter:NSZeroPoint
-                                          radius:radius
-                                      startAngle:radians_to_degrees(startAngle)
-                                        endAngle:radians_to_degrees(startAngle + angleDelta)
-                                       clockwise:!sweepFlag];
-
-    trans = NSAffineTransform.transform;
-    [trans scaleXBy:scale.x yBy:scale.y];
-    [path.path transformUsingAffineTransform:trans];
-
-    trans = NSAffineTransform.transform;
-    [trans rotateByRadians:xAxisRotation];
-    [path.path transformUsingAffineTransform:trans];
-
-    trans = NSAffineTransform.transform;
-    [trans translateXBy:centerPoint.x yBy:centerPoint.y];
-    [path.path transformUsingAffineTransform:trans];
+    CGPathAddRelativeArc(path, &transform, 0.f, 0.f, 1.f,
+                         startAngle, angleDelta);
 }

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

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

@implementation IJSVGCommandHorizontalLine

@@ -20,13 +20,15 @@
              command:(IJSVGCommand*)currentCommand
      previousCommand:(IJSVGCommand*)command
                 type:(IJSVGCommandType)type
-                 path:(IJSVGPath*)path
+                 path:(CGMutablePathRef)path
 {
-    if (type == kIJSVGCommandTypeAbsolute) {
-        [path.path lineToPoint:NSMakePoint(params[0], path.currentPoint.y)];
+    if(type == kIJSVGCommandTypeAbsolute) {
+        CGPathAddLineToPoint(path, NULL, params[0], CGPathGetCurrentPoint(path).y);
        return;
    }
-    [path.path relativeLineToPoint:NSMakePoint(params[0], 0.f)];
+    CGPoint currentPoint = CGPathGetCurrentPoint(path);
+    CGPathAddLineToPoint(path, NULL, currentPoint.x + params[0],
+                         currentPoint.y);
 }

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

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

@implementation IJSVGCommandLineTo

@@ -20,15 +20,26 @@
              command:(IJSVGCommand*)currentCommand
      previousCommand:(IJSVGCommand*)command
                 type:(IJSVGCommandType)type
-                 path:(IJSVGPath*)path
+                 path:(CGMutablePathRef)path
 {
-    if (type == kIJSVGCommandTypeAbsolute) {
-        [path.path lineToPoint:NSMakePoint(params[0], params[1])];
+    if(type == kIJSVGCommandTypeAbsolute) {
+        CGPathAddLineToPoint(path, NULL, params[0], params[1]);
        return;
    }
-    NSPoint point = NSMakePoint(path.currentPoint.x + params[0],
-        path.currentPoint.y + params[1]);
-    [path.path lineToPoint:point];
+    CGPoint currentPoint = CGPathGetCurrentPoint(path);
+    CGPathAddLineToPoint(path, NULL, currentPoint.x + params[0],
+                         currentPoint.y + params[1]);
+}
+
+- (void)convertToUnits:(IJSVGUnitType)units
+           boundingBox:(CGRect)boundingBox
+{
+    if(units == IJSVGUnitObjectBoundingBox) {
+        self.parameters[0] = [[IJSVGUnitLength unitWithPercentageFloat:self.parameters[0]] computeValue:boundingBox.size.width];
+        self.parameters[1] = [[IJSVGUnitLength unitWithPercentageFloat:self.parameters[1]] computeValue:boundingBox.size.height];
+    }
+    [super convertToUnits:units
+              boundingBox:boundingBox];
 }

@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 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

@@ -21,11 +21,11 @@
              command:(IJSVGCommand*)currentCommand
      previousCommand:(IJSVGCommand*)command
                 type:(IJSVGCommandType)type
-                 path:(IJSVGPath*)path
+                 path:(CGMutablePathRef)path
 {
    // 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
@@ -35,17 +35,31 @@
        return;
    }

-    // actual move to command
-    if (type == kIJSVGCommandTypeAbsolute) {
-        [path.path moveToPoint:NSMakePoint(params[0], params[1])];
+    // actual move to command - do a moveToPoint only
+    // if the type is absolute, or its possible the type is
+    // 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) {
+        CGPathMoveToPoint(path, NULL,
+                          params[0], params[1]);
        return;
    }
-    @try {
-        [path.path relativeMoveToPoint:NSMakePoint(params[0], params[1])];
-    }
-    @catch (NSException* exception) {
-        [path.path moveToPoint:NSMakePoint(params[0], params[1])];
+    CGPoint currentPoint = CGPathGetCurrentPoint(path);
+    CGPathMoveToPoint(path, NULL,
+                      currentPoint.x + params[0],
+                      currentPoint.y + params[1]);
+}
+
+- (void)convertToUnits:(IJSVGUnitType)units
+           boundingBox:(CGRect)boundingBox
+{
+    if(units == IJSVGUnitObjectBoundingBox) {
+        self.parameters[0] = [[IJSVGUnitLength unitWithPercentageFloat:self.parameters[0]] computeValue:boundingBox.size.width];
+        self.parameters[1] = [[IJSVGUnitLength unitWithPercentageFloat:self.parameters[1]] computeValue:boundingBox.size.height];
    }
+    [super convertToUnits:units
+              boundingBox:boundingBox];
 }

@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 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

@@ -21,15 +21,17 @@
              command:(IJSVGCommand*)currentCommand
      previousCommand:(IJSVGCommand*)command
                 type:(IJSVGCommandType)type
-                 path:(IJSVGPath*)path
+                 path:(CGMutablePathRef)path
 {
-    if (type == kIJSVGCommandTypeAbsolute) {
-        [path.path addQuadCurveToPoint:NSMakePoint(params[2], params[3])
-                          controlPoint:NSMakePoint(params[0], params[1])];
+    if(type == kIJSVGCommandTypeAbsolute) {
+        CGPathAddQuadCurveToPoint(path, NULL, params[0], params[1],
+                                  params[2], params[3]);
        return;
    }
-    [path.path addQuadCurveToPoint:NSMakePoint(path.currentPoint.x + params[2], path.currentPoint.y + params[3])
-                      controlPoint:NSMakePoint(path.currentPoint.x + params[0], path.currentPoint.y + params[1])];
+    CGPoint currentPoint = CGPathGetCurrentPoint(path);
+    CGPathAddQuadCurveToPoint(path, NULL,
+                              currentPoint.x + params[0], currentPoint.y + params[1],
+                              currentPoint.x + params[2], currentPoint.y + params[3]);
 }

@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 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

@@ -22,43 +22,43 @@
              command:(IJSVGCommand*)currentCommand
      previousCommand:(IJSVGCommand*)command
                 type:(IJSVGCommandType)type
-                 path:(IJSVGPath*)path
+                 path:(CGMutablePathRef)path
 {
-    NSPoint firstControl = NSMakePoint(path.currentPoint.x, path.currentPoint.y);
-    if (command != nil) {
-        if (command.class == [IJSVGCommandCurve class] || command.class == self.class) {
-            if (command.class == [IJSVGCommandCurve class]) {
-                if (command.type == kIJSVGCommandTypeAbsolute) {
-                    firstControl = NSMakePoint(-1 * command.parameters[2] + 2 * path.currentPoint.x,
-                        -1 * command.parameters[3] + 2 * path.currentPoint.y);
+    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) {
+                    firstControl = CGPointMake(-1 * command.parameters[2] + 2 * currentPoint.x,
+                        -1 * command.parameters[3] + 2 * currentPoint.y);
                } else {
-                    NSPoint oldPoint = NSMakePoint(path.currentPoint.x - command.parameters[4],
-                        path.currentPoint.y - command.parameters[5]);
-                    firstControl = NSMakePoint(-1 * (command.parameters[2] + oldPoint.x) + 2 * path.currentPoint.x,
-                        -1 * (command.parameters[3] + oldPoint.y) + 2 * path.currentPoint.y);
+                    NSPoint oldPoint = CGPointMake(currentPoint.x - command.parameters[4],
+                        currentPoint.y - command.parameters[5]);
+                    firstControl = CGPointMake(-1 * (command.parameters[2] + oldPoint.x) + 2 * currentPoint.x,
+                        -1 * (command.parameters[3] + oldPoint.y) + 2 * currentPoint.y);
                }
            } else {
-                if (command.type == kIJSVGCommandTypeAbsolute) {
-                    firstControl = NSMakePoint(-1 * command.parameters[0] + 2 * path.currentPoint.x,
-                        -1 * command.parameters[1] + 2 * path.currentPoint.y);
+                if(command.type == kIJSVGCommandTypeAbsolute) {
+                    firstControl = CGPointMake(-1 * command.parameters[0] + 2 * currentPoint.x,
+                        -1 * command.parameters[1] + 2 * currentPoint.y);
                } else {
-                    NSPoint oldPoint = NSMakePoint(path.currentPoint.x - command.parameters[2],
-                        path.currentPoint.y - command.parameters[3]);
-                    firstControl = NSMakePoint(-1 * (command.parameters[0] + oldPoint.x) + 2 * path.currentPoint.x,
-                        -1 * (command.parameters[1] + oldPoint.y) + 2 * path.currentPoint.y);
+                    NSPoint oldPoint = CGPointMake(currentPoint.x - command.parameters[2],
+                        currentPoint.y - command.parameters[3]);
+                    firstControl = CGPointMake(-1 * (command.parameters[0] + oldPoint.x) + 2 * currentPoint.x,
+                        -1 * (command.parameters[1] + oldPoint.y) + 2 * currentPoint.y);
                }
            }
        }
    }
-    if (type == kIJSVGCommandTypeAbsolute) {
-        [path.path curveToPoint:NSMakePoint(params[2], params[3])
-                  controlPoint1:NSMakePoint(firstControl.x, firstControl.y)
-                  controlPoint2:NSMakePoint(params[0], params[1])];
+    if(type == kIJSVGCommandTypeAbsolute) {
+        CGPathAddCurveToPoint(path, NULL, firstControl.x, firstControl.y,
+                              params[0], params[1], params[2], params[3]);
        return;
    }
-    [path.path curveToPoint:NSMakePoint(path.currentPoint.x + params[2], path.currentPoint.y + params[3])
-              controlPoint1:NSMakePoint(firstControl.x, firstControl.y)
-              controlPoint2:NSMakePoint(path.currentPoint.x + params[0], path.currentPoint.y + params[1])];
+    CGPathAddCurveToPoint(path, NULL, firstControl.x, firstControl.y,
+                          currentPoint.x + params[0], currentPoint.y + params[1],
+                          currentPoint.x + params[2], currentPoint.y + params[3]);
 }

@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 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

@@ -22,35 +22,37 @@
              command:(IJSVGCommand*)currentCommand
      previousCommand:(IJSVGCommand*)command
                 type:(IJSVGCommandType)type
-                 path:(IJSVGPath*)path
+                 path:(CGMutablePathRef)path
 {
-    NSPoint commandPoint = NSMakePoint(path.currentPoint.x, path.currentPoint.y);
-    if (command != nil) {
-        if (command.class == IJSVGCommandQuadraticCurve.class) {
+    CGPoint lastControlPoint = IJSVGPathGetLastQuadraticCommandPoint(path);
+    CGPoint currentPoint = CGPathGetCurrentPoint(path);
+    CGPoint commandPoint = CGPointMake(currentPoint.x, currentPoint.y);
+    if(command != nil) {
+        if(command.class == IJSVGCommandQuadraticCurve.class) {
            // quadratic curve
-            if (command.type == kIJSVGCommandTypeAbsolute) {
-                commandPoint = NSMakePoint(-1 * command.parameters[0] + 2 * path.currentPoint.x,
-                    -1 * command.parameters[1] + 2 * path.currentPoint.y);
+            if(command.type == kIJSVGCommandTypeAbsolute) {
+                commandPoint = NSMakePoint(-1 * command.parameters[0] + 2 * currentPoint.x,
+                    -1 * command.parameters[1] + 2 * currentPoint.y);
            } else {
-                NSPoint oldPoint = CGPointMake(path.currentPoint.x - command.parameters[2],
-                    path.currentPoint.y - command.parameters[3]);
-                commandPoint = CGPointMake(-1 * (command.parameters[0] + oldPoint.x) + 2 * (path.currentPoint.x),
-                    -1 * (command.parameters[1] + oldPoint.y) + 2 * path.currentPoint.y);
+                CGPoint oldPoint = CGPointMake(currentPoint.x - command.parameters[2],
+                    currentPoint.y - command.parameters[3]);
+                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 * (path.lastControlPoint.x) + 2 * (path.currentPoint.x),
-                -1 * (path.lastControlPoint.y) + 2 * path.currentPoint.y);
+            commandPoint = CGPointMake(-1 * (lastControlPoint.x) + 2 * (currentPoint.x),
+                -1 * (lastControlPoint.y) + 2 * currentPoint.y);
        }
    }
-    path.lastControlPoint = commandPoint;
-    if (type == kIJSVGCommandTypeAbsolute) {
-        [path.path addQuadCurveToPoint:NSMakePoint(params[0], params[1])
-                          controlPoint:commandPoint];
+//    path.lastControlPoint = commandPoint;
+    if(type == kIJSVGCommandTypeAbsolute) {
+        CGPathAddQuadCurveToPoint(path, NULL, commandPoint.x, commandPoint.y,
+                                  params[0], params[1]);
        return;
    }
-    [path.path addQuadCurveToPoint:NSMakePoint(path.currentPoint.x + params[0], path.currentPoint.y + params[1])
-                      controlPoint:commandPoint];
+    CGPathAddQuadCurveToPoint(path, NULL, commandPoint.x, commandPoint.y,
+                              currentPoint.x + params[0], currentPoint.y + params[1]);
 }

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

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

@implementation IJSVGCommandVerticalLine

@@ -20,13 +20,14 @@
              command:(IJSVGCommand*)currentCommand
      previousCommand:(IJSVGCommand*)command
                 type:(IJSVGCommandType)type
-                 path:(IJSVGPath*)path
+                 path:(CGMutablePathRef)path
 {
-    if (type == kIJSVGCommandTypeAbsolute) {
-        [path.path lineToPoint:NSMakePoint(path.currentPoint.x, params[0])];
+    if(type == kIJSVGCommandTypeAbsolute) {
+        CGPathAddLineToPoint(path, NULL, CGPathGetCurrentPoint(path).x, params[0]);
        return;
    }
-    [path.path relativeLineToPoint:NSMakePoint(0.f, params[0])];
+    CGPoint currentPoint = CGPathGetCurrentPoint(path);
+    CGPathAddLineToPoint(path, NULL, currentPoint.x, currentPoint.y + params[0]);
 }

@end
@@ -6,55 +6,32 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGBezierPathAdditions.h"
-#import "IJSVGColorList.h"
-#import "IJSVGExporter.h"
-#import "IJSVGGradientLayer.h"
-#import "IJSVGGroupLayer.h"
-#import "IJSVGImageLayer.h"
-#import "IJSVGLayerTree.h"
-#import "IJSVGParser.h"
-#import "IJSVGRendering.h"
-#import "IJSVGRenderingStyle.h"
-#import "IJSVGTransaction.h"
+#import <IJSVG/IJSVGTraitedColorStorage.h>
+#import <IJSVG/IJSVGRootNode.h>
+#import <IJSVG/IJSVGExporter.h>
+#import <IJSVG/IJSVGGradientLayer.h>
+#import <IJSVG/IJSVGGroupLayer.h>
+#import <IJSVG/IJSVGRootLayer.h>
+#import <IJSVG/IJSVGImageLayer.h>
+#import <IJSVG/IJSVGLayerTree.h>
+#import <IJSVG/IJSVGParser.h>
+#import <IJSVG/IJSVGRendering.h>
+#import <IJSVG/IJSVGStyle.h>
+#import <IJSVG/IJSVGTransaction.h>
 #import <Foundation/Foundation.h>

@class IJSVG;
+@class IJSVGParser;

-@protocol IJSVGDelegate <NSObject, IJSVGParserDelegate>
-
-@optional
- (BOOL)svg:(IJSVG*)svg
-    shouldHandleForeignObject:(IJSVGForeignObject*)foreignObject;
- (void)svg:(IJSVG*)svg
-    handleForeignObject:(IJSVGForeignObject*)foreignObject
-               document:(NSXMLDocument*)document;
- (void)svg:(IJSVG*)svg
-      foundSubSVG:(IJSVG*)subSVG
-    withSVGString:(NSString*)subSVGString;
-
-@end
-
-@interface IJSVG : NSObject <NSPasteboardWriting, IJSVGParserDelegate> {
+@interface IJSVG : NSObject <NSPasteboardWriting> {

@private
-    IJSVGParser* _group;
-    CGFloat _scale;
-    CGFloat _clipScale;
-    id<IJSVGDelegate> _delegate;
-    IJSVGLayer* _layerTree;
+    IJSVGRootNode* _rootNode;
+    IJSVGLayerTree* _layerTree;
    CGRect _viewBox;
-    CGFloat _backingScaleFactor;
-    CGFloat _lastProposedBackingScale;
-    IJSVGRenderQuality _lastProposedRenderQuality;
    CGFloat _backingScale;
-    NSMutableDictionary* _replacementColors;
-
-    struct {
-        unsigned int shouldHandleForeignObject : 1;
-        unsigned int handleForeignObject : 1;
-        unsigned int shouldHandleSubSVG : 1;
-    } _respondsTo;
+    IJSVGUnitSize* _intrinsicSize;
+    IJSVGParser* _parser;
 }

 // set this to be called when the layer is about to draw, it will call this
@@ -66,92 +43,120 @@
 // 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* style;
+@property (nonatomic, strong) IJSVGStyle* style;
+
+@property (nonatomic, copy) NSString* title;
+@property (nonatomic, copy) NSString* desc;
+@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;
+- (CGSize)sizeByMaintainingAspectRatioWithSize:(CGSize)aSize;
 - (NSString*)identifier;
- (IJSVGLayer*)layer;
- (IJSVGLayer*)layerWithTree:(IJSVGLayerTree*)tree;
- (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;

- (CGFloat)computeBackingScale:(CGFloat)scale;
- (void)discardDOM;
+ (id)SVGNamed:(NSString*)string;
+
+ (IJSVG*)SVGFromCGPathRef:(CGPathRef)path;
+ (IJSVG*)SVGFromCGPathRef:(CGPathRef)path
+                   flipped:(BOOL)flipped;

-+ (id)svgNamed:(NSString*)string;
-+ (id)svgNamed:(NSString*)string
-      delegate:(id<IJSVGDelegate>)delegate;

 - (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
                  error:(NSError**)error;

+- (id)initWithSVGData:(NSData*)data;
+- (id)initWithSVGData:(NSData*)data
+                error:(NSError**)error;
+
 - (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;
- (NSImage*)imageWithSize:(NSSize)aSize;
- (NSImage*)imageWithSize:(NSSize)aSize
+
+- (id)initWithDataAssetNamed:(NSDataAssetName)name
+                       error:(NSError**)error;
+- (id)initWithDataAssetNamed:(NSDataAssetName)name
+                      bundle:(NSBundle*)bundle
+                       error:(NSError**)error;
+
+- (NSImage*)imageWithSize:(CGSize)aSize;
+- (NSImage*)imageWithSize:(CGSize)aSize
                    error:(NSError**)error;
- (NSImage*)imageWithSize:(NSSize)aSize
+- (NSImage*)imageWithSize:(CGSize)aSize
                  flipped:(BOOL)flipped;
- (NSImage*)imageByMaintainingAspectRatioWithSize:(NSSize)aSize
+- (NSImage*)imageWithSize:(CGSize)aSize
+                  flipped:(BOOL)flipped
+                    error:(NSError**)error;
+- (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;

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

 // colors
- (IJSVGColorList*)computedColorList:(BOOL*)hasPatternFills;
 - (void)performBlock:(dispatch_block_t)block;
+
+// matching
+- (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.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
@@ -1,128 +0,0 @@
-//
-//  IJSVGFontConverter.m
-//  IJSVGExample
-//
-//  Created by Curtis Hard on 21/05/2015.
-//  Copyright (c) 2015 Curtis Hard. All rights reserved.
-//
-
-#import "IJSVGBezierPathAdditions.h"
-#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 cgPath = [path.path newCGPathRef:NO];
-    CGPathRef flippedPath = [IJSVGUtils newFlippedCGPath:cgPath];
-    IJSVG* svg = [self convertPathToSVG:flippedPath];
-    CGPathRelease(flippedPath);
-    CGPathRelease(cgPath);
-    return svg;
-}
-
-+ (IJSVG*)convertPathToSVG:(CGPathRef)path
-{
-    __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];
-    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;
@@ -17,6 +17,9 @@
    IJSVG* _svg;
 }

+- (instancetype)initWithData:(NSData*)data;
+
@property (nonatomic, readonly) CGRect viewBox;
+@property (nonatomic, readonly) IJSVG* SVG;

@end
@@ -6,13 +6,11 @@
 //  Copyright © 2019 Curtis Hard. All rights reserved.
 //

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

@implementation IJSVGImageRep

-@synthesize viewBox = _viewBox;
-
 + (void)load
 {
    [NSBitmapImageRep registerImageRepClass:self];
@@ -25,7 +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" ];
@@ -34,7 +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" ];
@@ -44,7 +42,7 @@
 + (NSArray<NSImageRep*>*)imageRepsWithData:(NSData*)data
 {
    IJSVGImageRep* instance = [self imageRepWithData:data];
-    if (instance == nil) {
+    if(instance == nil) {
        return @[];
    }
    return @[ instance ];
@@ -52,28 +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;
        }

@@ -109,4 +100,9 @@
    return _svg.viewBox;
 }

+- (IJSVG*)SVG
+{
+    return _svg;
+}
+
@end
@@ -0,0 +1,37 @@
+//
+//  IJSVGUmbrella.h
+//  IJSVG
+//
+//  Created by Curtis Hard on 16/04/2023.
+//  Copyright © 2023 Curtis Hard. All rights reserved.
+//
+
+#ifndef IJSVGUmbrella_h
+#define IJSVGUmbrella_h
+
+#import <IJSVG/IJSVG.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/IJSVGCommandSmoothQuadraticCurve.h>
+#import <IJSVG/IJSVGCommandSmoothCurve.h>
+#import <IJSVG/IJSVGCommandVerticalLine.h>
+#import <IJSVG/IJSVGExporterPathInstruction.h>
+#import <IJSVG/IJSVGFeatureFlag.h>
+#import <IJSVG/IJSVGFeatureFlags.h>
+#import <IJSVG/IJSVGFilterEffectGaussianBlur.h>
+#import <IJSVG/IJSVGFilterLayer.h>
+#import <IJSVG/IJSVGImageRep.h>
+#import <IJSVG/IJSVGMath.h>
+#import <IJSVG/IJSVGParsing.h>
+#import <IJSVG/IJSVGPatternLayer.h>
+#import <IJSVG/IJSVGStrokeLayer.h>
+#import <IJSVG/IJSVGThreadManager.h>
+#import <IJSVG/IJSVGView.h>
+#import <IJSVG/NSImage+IJSVGAdditions.h>
+
+#endif /* IJSVGUmbrella_h */
@@ -6,7 +6,7 @@
 //  Copyright © 2017 Curtis Hard. All rights reserved.
 //

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

 IB_DESIGNABLE
@@ -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;
@@ -39,9 +36,9 @@
 - (void)awakeFromNib
 {
    // image was set via IB
-    if (imageName != nil) {
-        IJSVG* anSVG = [IJSVG svgNamed:imageName];
-        if (tintColor != nil) {
+    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;
    }

@@ -1,19 +0,0 @@
-//
-//  IJSVGWriter.h
-//  IJSVGExample
-//
-//  Created by Curtis Hard on 21/05/2015.
-//  Copyright (c) 2015 Curtis Hard. All rights reserved.
-//
-
-#import "IJSVGPath.h"
-#import <Foundation/Foundation.h>
-
-@interface IJSVGWriter : NSObject {
-}
-
-+ (NSString*)SVGDocumentStringForSVGGlyph:(IJSVGPath*)node;
-+ (NSString*)SVGDocumentStringForBezierPath:(NSBezierPath*)path;
-+ (NSXMLDocument*)SVGDocumentForBezierPath:(NSBezierPath*)path;
-
-@end
@@ -1,115 +0,0 @@
-//
-//  IJSVGWriter.m
-//  IJSVGExample
-//
-//  Created by Curtis Hard on 21/05/2015.
-//  Copyright (c) 2015 Curtis Hard. All rights reserved.
-//
-
-#import "IJSVGWriter.h"
-
-@implementation IJSVGWriter
-
-+ (NSString*)SVGDocumentStringForSVGGlyph:(IJSVGPath*)node
-{
-    NSBezierPath* path = [node path];
-    // we need to flip it
-    NSAffineTransform* trans = NSAffineTransform.transform;
-    [trans scaleXBy:1.f yBy:-1.f];
-    [trans translateXBy:0.f yBy:path.controlPointBounds.size.height];
-    path = [trans transformBezierPath:path];
-    return [self.class SVGDocumentStringForBezierPath:path];
-}
-
-+ (NSString*)SVGDocumentStringForBezierPath:(NSBezierPath*)path
-{
-    return [self.class SVGDocumentForBezierPath:path].XMLString;
-}
-
-+ (NSXMLDocument*)SVGDocumentForBezierPath:(NSBezierPath*)path
-{
-    NSXMLElement* root = [self.class rootElementForPath:path];
-
-    // create the path data
-    NSXMLElement* p = [[[NSXMLElement alloc] initWithName:@"path"] autorelease];
-
-    // add the drawing command
-    NSXMLNode* n = [[[NSXMLNode alloc] initWithKind:NSXMLAttributeKind] autorelease];
-    [n setName:@"d"];
-    [n setStringValue:[self.class SVGPathStringForBezierPath:path]];
-    [p addAttribute:n];
-
-    // add the drawing path to the root
-    [root addChild:p];
-    return [[[NSXMLDocument alloc] initWithRootElement:root] autorelease];
-}
-
-+ (NSXMLElement*)rootElementForPath:(NSBezierPath*)path
-{
-    NSXMLElement* element = [[[NSXMLElement alloc] initWithName:@"svg"] autorelease];
-    NSRect bounds = path.controlPointBounds;
-
-    // width
-    NSXMLNode* att = [[[NSXMLNode alloc] initWithKind:NSXMLAttributeKind] autorelease];
-    [att setName:@"width"];
-    [att setStringValue:[NSString stringWithFormat:@"%f", bounds.size.width]];
-    [element addAttribute:att];
-
-    // height
-    att = [[[NSXMLNode alloc] initWithKind:NSXMLAttributeKind] autorelease];
-    [att setName:@"height"];
-    [att setStringValue:[NSString stringWithFormat:@"%f", bounds.size.height]];
-    [element addAttribute:att];
-
-    // viewbox
-    att = [[[NSXMLNode alloc] initWithKind:NSXMLAttributeKind] autorelease];
-    [att setName:@"viewBox"];
-    [att setStringValue:[NSString stringWithFormat:@"%f %f %f %f", bounds.origin.x, bounds.origin.y, bounds.size.width, bounds.size.height]];
-    [element addAttribute:att];
-
-    // namespace
-    att = [[[NSXMLNode alloc] initWithKind:NSXMLAttributeKind] autorelease];
-    [att setName:@"xmlns"];
-    [att setStringValue:@"http://www.w3.org/2000/svg"];
-    [element addAttribute:att];
-    return element;
-}
-
-+ (NSString*)SVGPathStringForBezierPath:(NSBezierPath*)path
-{
-    NSMutableString* str = [[[NSMutableString alloc] init] autorelease];
-    for (NSInteger i = 0; i < path.elementCount; i++) {
-        NSBezierPathElement element = [path elementAtIndex:i];
-        switch (element) {
-        // move
-        case NSMoveToBezierPathElement: {
-            NSPoint points[1];
-            [path elementAtIndex:i associatedPoints:points];
-            [str appendFormat:@"M%f %f", points[0].x, points[0].y];
-            break;
-        }
-        // line
-        case NSLineToBezierPathElement: {
-            NSPoint points[1];
-            [path elementAtIndex:i associatedPoints:points];
-            [str appendFormat:@"L%f %f", points[0].x, points[0].y];
-            break;
-        }
-        // curve
-        case NSCurveToBezierPathElement: {
-            NSPoint points[3];
-            [path elementAtIndex:i associatedPoints:points];
-            [str appendFormat:@"C%f %f %f %f %f %f", points[0].x, points[0].y, points[1].x, points[1].y, points[2].x, points[2].y];
-            break;
-        }
-        // close
-        case NSClosePathBezierPathElement: {
-            [str appendFormat:@"Z"];
-            break;
-        }
-        }
-    }
-    return str;
-}
-
-@end
@@ -7,8 +7,15 @@
 //

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

@class IJSVG;
+@class IJSVGExporter;
+@class IJSVGLayer;
+@class IJSVGNode;
+
+NS_ASSUME_NONNULL_BEGIN

 typedef void (^IJSVGCGPathHandler)(const CGPathElement* pathElement);
 typedef void (^IJSVGPathElementEnumerationBlock)(const CGPathElement* pathElement, CGPoint currentPoint);
@@ -25,20 +32,52 @@ 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,
    IJSVGExporterOptionCenterWithinViewBox = 1 << 16,
-    IJSVGExporterOptionAll = IJSVGExporterOptionRemoveUselessDef | IJSVGExporterOptionRemoveUselessGroups | IJSVGExporterOptionCreateUseForPaths | IJSVGExporterOptionMoveAttributesToGroup | IJSVGExporterOptionSortAttributes | IJSVGExporterOptionCollapseGroups | IJSVGExporterOptionCleanupPaths | IJSVGExporterOptionRemoveHiddenElements | IJSVGExporterOptionScaleToSizeIfNecessary | IJSVGExporterOptionCompressOutput | IJSVGExporterOptionCollapseGradients | IJSVGExporterOptionRemoveWidthHeightAttributes | IJSVGExporterOptionColorAllowRRGGBBAA | IJSVGExporterOptionRemoveComments | IJSVGExporterOptionCenterWithinViewBox
+    IJSVGExporterOptionRemoveXMLDeclaration = 1 << 17,
+    IJSVGExporterOptionConvertArcs = 1 << 18,
+    IJSVGExporterOptionConvertShapesToPaths = 1 << 19,
+    IJSVGExporterOptionRoundTransforms = 1 << 20,
+    IJSVGExporterOptionRemoveDefaultValues = 1 << 21,
+    IJSVGExporterOptionConvertStrokesToPaths = 1 << 22,
+    IJSVGExporterOptionAll = IJSVGExporterOptionRemoveUselessDef | IJSVGExporterOptionRemoveUselessGroups |
+        IJSVGExporterOptionCreateUseForPaths | IJSVGExporterOptionMoveAttributesToGroup |
+        IJSVGExporterOptionSortAttributes | IJSVGExporterOptionCollapseGroups |
+        IJSVGExporterOptionCleanupPaths | IJSVGExporterOptionRemoveHiddenElements | IJSVGExporterOptionCompressOutput |
+        IJSVGExporterOptionCollapseGradients | IJSVGExporterOptionRemoveWidthHeightAttributes |
+        IJSVGExporterOptionColorAllowRRGGBBAA | IJSVGExporterOptionRemoveComments |
+        IJSVGExporterOptionCenterWithinViewBox | IJSVGExporterOptionRemoveXMLDeclaration |
+        IJSVGExporterOptionConvertArcs | IJSVGExporterOptionConvertShapesToPaths |
+        IJSVGExporterOptionRoundTransforms | IJSVGExporterOptionRemoveDefaultValues |
+        IJSVGExporterOptionConvertStrokesToPaths
 };

 BOOL IJSVGExporterHasOption(IJSVGExporterOptions options, NSInteger option);
 void IJSVGEnumerateCGPathElements(CGPathRef path, IJSVGPathElementEnumerationBlock enumBlock);
-const NSArray* IJSVGShortCharacterArray(void);
+const NSArray<NSString*>* IJSVGShortCharacterArray(void);
+const NSDictionary<NSString*, NSString*>* IJSVGDefaultAttributes(void);
+
+
+@protocol IJSVGExporterDelegate <NSObject>
+
+@optional
+- (NSString* _Nullable)svgExporter:(IJSVGExporter*)exporter
+              identifierForElement:(NSXMLElement* _Nullable)element
+                              type:(IJSVGNodeType)type
+                         defaultID:(NSString* (^)(void))defaultID;
+- (NSString* _Nullable)svgExporter:(IJSVGExporter*)exporter
+                    stringForColor:(NSColor*)color
+                             flags:(IJSVGColorUsageTraits)flag
+                           options:(IJSVGColorStringOptions)options;
+
+
+@end

@interface IJSVGExporter : NSObject {

@@ -50,15 +89,32 @@ const NSArray* IJSVGShortCharacterArray(void);
    NSXMLElement* _defElement;
    NSInteger _idCount;
    NSInteger _shortIdCount;
+    BOOL _appliedXLink;
+    IJSVGThreadManager* _threadManager;
+    
+    struct {
+        unsigned int identifierForElement: 1;
+        unsigned int stringForColor: 1;
+    } _respondsTo;
 }

-@property (nonatomic, copy) NSString* title;
-@property (nonatomic, copy) NSString* description;
+@property (nonatomic, assign) id<IJSVGExporterDelegate> delegate;
+@property (nonatomic, assign) IJSVGFloatingPointOptions floatingPointOptions;
+@property (nonatomic, copy, nullable) NSString* title;
+@property (nonatomic, copy, nullable) NSString* desc;

 - (id)initWithSVG:(IJSVG*)svg
             size:(CGSize)size
          options:(IJSVGExporterOptions)options;
+- (id)initWithSVG:(IJSVG*)svg
+             size:(CGSize)size
+          options:(IJSVGExporterOptions)options
+floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions;
+
 - (NSString*)SVGString;
 - (NSData*)SVGData;
+- (IJSVG*)SVG:(NSError**)error;

@end
+
+NS_ASSUME_NONNULL_END
@@ -10,35 +10,54 @@

 NS_ASSUME_NONNULL_BEGIN

-typedef struct {
-    char instruction;
-    NSArray<NSString*>* params;
-} IJSVGExporterPathInstructionCommand;
+@interface IJSVGExporterPathInstructionCommand : NSObject {
+}
+
+@property (nonatomic, assign) char instruction;
+@property (nonatomic, strong) NSArray<NSString*>* params;
+
+@end

@interface IJSVGExporterPathInstruction : NSObject {

@private
    NSInteger _dataCount;
-    char _instruction;
    CGFloat* _data;
+    CGFloat* _base;
+    CGFloat* _coords;
 }

-IJSVGExporterPathInstructionCommand* IJSVGExporterPathInstructionCommandCopy(IJSVGExporterPathInstructionCommand command);
-void IJSVGExporterPathInstructionCommandFree(IJSVGExporterPathInstructionCommand* _Nullable command);
+@property (nonatomic, assign) char instruction;

-+ (NSArray<IJSVGExporterPathInstruction*>*)instructionsFromPath:(CGPathRef)path;
+void IJSVGExporterPathInstructionRoundData(CGFloat* data, NSInteger length, IJSVGFloatingPointOptions options);
+CGFloat IJSVGExporterPathFloatToFixed(CGFloat number, int precision);
+
+ (NSArray<IJSVGExporterPathInstruction*>*)instructionsFromPath:(CGPathRef)path
+                                           floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions;

 - (id)initWithInstruction:(char)instruction
                dataCount:(NSInteger)floatCount;

- (void)setInstruction:(char)newInstruction;
- (char)instruction;
 - (CGFloat*)data;
 - (NSInteger)dataLength;

-+ (void)convertInstructionsToRelativeCoordinates:(NSArray<IJSVGExporterPathInstruction*>*)instructions;
-+ (NSString*)pathStringFromInstructions:(NSArray<IJSVGExporterPathInstruction*>*)instructions;
-+ (NSString*)pathStringWithInstructionSet:(NSArray<NSValue*>*)instructionSets;
+ (NSArray<IJSVGExporterPathInstruction*>*)convertInstructionsCurves:(NSArray<IJSVGExporterPathInstruction*>*)instructions
+                                                floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions;
+ (void)convertInstructionsToMixedAbsoluteRelative:(NSArray<IJSVGExporterPathInstruction*>*)instructions
+                              floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions;
+ (void)convertInstructionsDataToRounded:(NSArray<IJSVGExporterPathInstruction*>*)instructions
+                    floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions;
+ (void)convertInstructionsToRelativeCoordinates:(NSArray<IJSVGExporterPathInstruction*>*)instructions
+                            floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions;
+ (NSString*)pathStringFromInstructions:(NSArray<IJSVGExporterPathInstruction*>*)instructions
+                   floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions;
+ (NSString*)pathStringWithInstructionSet:(NSArray<NSValue*>*)instructionSets
+                     floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions;

@end
 NS_ASSUME_NONNULL_END
+
+static NSInteger const kIJSVGExporterPathInstructionFloatPrecision = 3;
+static CGFloat const kIJSVGExporterPathInstructionErrorThreshold = 1e-2;
+
+#define IJ_SVG_EXPORT_ROUND(value) IJSVGExporterPathFloatToFixed(value, kIJSVGExporterPathInstructionFloatPrecision)
@@ -6,30 +6,46 @@
 //  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) {
-        free(_data);
+    if(_data != NULL) {
+        (void)free(_data), _data = NULL;
+    }
+    if(_base != NULL) {
+        (void)free(_base), _base = 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);
        }
+
+        // setup base and coords
+        _base = (CGFloat*)malloc(sizeof(CGFloat) * 2);
+        _coords = (CGFloat*)malloc(sizeof(CGFloat) * 2);
    }
    return self;
 }
@@ -39,104 +55,63 @@
    return _dataCount;
 }

- (void)setInstruction:(char)newInstruction
-{
-    _instruction = newInstruction;
-}
-
- (char)instruction
-{
-    return _instruction;
-}
-
 - (CGFloat*)data
 {
    return _data;
 }

-IJSVGExporterPathInstructionCommand* IJSVGExporterPathInstructionCommandCopy(IJSVGExporterPathInstructionCommand command)
+- (CGFloat*)base
 {
-    IJSVGExporterPathInstructionCommand* copy = NULL;
-    copy = (IJSVGExporterPathInstructionCommand*)malloc(sizeof(IJSVGExporterPathInstructionCommand));
-    copy->instruction = command.instruction;
-    copy->params = command.params;
-    return copy;
+    return _base;
 }

-void IJSVGExporterPathInstructionCommandFree(IJSVGExporterPathInstructionCommand* _Nullable command)
+- (CGFloat*)coords
 {
-    if (command != NULL) {
-        free(command);
-    }
+    return _coords;
 }

-+ (NSString*)pathStringWithInstructionSet:(NSArray<NSValue*>*)instructionSets
+ (NSString*)pathStringWithInstructionSet:(NSArray<IJSVGExporterPathInstructionCommand*>*)instructionSets
+                     floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions
 {
    IJSVGExporterPathInstructionCommand* lastCommand = NULL;
-    NSMutableString* string = [[[NSMutableString alloc] init] autorelease];
-    char* lastCommandChars = NULL;
-    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:@" "];
        }

-        NSInteger index = 0;
-        for (NSString* dataString in command.params) {
-            const char* chars = dataString.UTF8String;
-
-            // work out if the command is signed and or decimal
-            BOOL isSigned = chars[0] == '-';
-            BOOL isDecimal = (isSigned == NO && chars[0] == '.') || (isSigned == YES && chars[1] == '.');
-
-            // we also need to know if the previous command was a decimal or not
-            BOOL lastWasDecimal = NO;
-            if (lastCommandChars != NULL) {
-                lastWasDecimal = strchr(lastCommandChars, '.') != NULL;
-            }
-
-            // we only need a space if the current command is not signed
-            // a decimal and the previous command was decimal too
-            if (index++ == 0 || isSigned || (isDecimal == YES && lastWasDecimal == YES)) {
-                [string appendString:dataString];
-            } else {
-                [string appendFormat:@" %@", dataString];
-            }
-
-            // store last command chars
-            lastCommandChars = (char*)chars;
-        }
+        // compresses the floats
+        NSString* compressedFloats = IJSVGCompressFloatParameterArray(command.params);
+        [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);
        NSArray<NSString*>* set = nil;
        switch (lowerInstruction) {
+        case 't':
        case 'm':
        case 'l': {
            set = @[
-                IJSVGShortFloatString(data[0]),
-                IJSVGShortFloatString(data[1])
+                IJSVGShortFloatStringWithOptions(data[0], floatingPointOptions),
+                IJSVGShortFloatStringWithOptions(data[1], floatingPointOptions)
            ];
            break;
        }
@@ -144,29 +119,43 @@ void IJSVGExporterPathInstructionCommandFree(IJSVGExporterPathInstructionCommand
        case 'v':
        case 'h': {
            set = @[
-                IJSVGShortFloatString(data[0])
+                IJSVGShortFloatStringWithOptions(data[0], floatingPointOptions)
            ];
            break;
        }

        case 'c': {
            set = @[
-                IJSVGShortFloatString(data[0]),
-                IJSVGShortFloatString(data[1]),
-                IJSVGShortFloatString(data[2]),
-                IJSVGShortFloatString(data[3]),
-                IJSVGShortFloatString(data[4]),
-                IJSVGShortFloatString(data[5])
+                IJSVGShortFloatStringWithOptions(data[0], floatingPointOptions),
+                IJSVGShortFloatStringWithOptions(data[1], floatingPointOptions),
+                IJSVGShortFloatStringWithOptions(data[2], floatingPointOptions),
+                IJSVGShortFloatStringWithOptions(data[3], floatingPointOptions),
+                IJSVGShortFloatStringWithOptions(data[4], floatingPointOptions),
+                IJSVGShortFloatStringWithOptions(data[5], floatingPointOptions)
            ];
            break;
        }

+        case 's':
        case 'q': {
            set = @[
-                IJSVGShortFloatString(data[0]),
-                IJSVGShortFloatString(data[1]),
-                IJSVGShortFloatString(data[2]),
-                IJSVGShortFloatString(data[3])
+                IJSVGShortFloatStringWithOptions(data[0], floatingPointOptions),
+                IJSVGShortFloatStringWithOptions(data[1], floatingPointOptions),
+                IJSVGShortFloatStringWithOptions(data[2], floatingPointOptions),
+                IJSVGShortFloatStringWithOptions(data[3], floatingPointOptions)
+            ];
+            break;
+        }
+
+        case 'a': {
+            set = @[
+                IJSVGShortFloatStringWithOptions(data[0], floatingPointOptions),
+                IJSVGShortFloatStringWithOptions(data[1], floatingPointOptions),
+                IJSVGShortFloatStringWithOptions(data[2], floatingPointOptions),
+                IJSVGShortFloatStringWithOptions(data[3], floatingPointOptions),
+                IJSVGShortFloatStringWithOptions(data[4], floatingPointOptions),
+                IJSVGShortFloatStringWithOptions(data[5], floatingPointOptions),
+                IJSVGShortFloatStringWithOptions(data[6], floatingPointOptions),
            ];
            break;
        }
@@ -178,142 +167,381 @@ 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];
+    return [self pathStringWithInstructionSet:pathInstructions
+                         floatingPointOptions:floatingPointOptions];
+}
+
+CGFloat IJSVGExporterPathFloatToFixed(CGFloat number, int precision)
+{
+    return floorf(pow(10, precision) * number) / pow(10, precision);
+}
+
+void IJSVGExporterPathInstructionRoundData(CGFloat* data, NSInteger length,
+    IJSVGFloatingPointOptions options)
+{
+    for (NSInteger i = length; i-- > 0;) {
+        CGFloat d = data[i];
+        CGFloat proposed = IJSVGExporterPathFloatToFixed(d, options.precision);
+        if(proposed != d) {
+            CGFloat rounded = +IJSVGExporterPathFloatToFixed(d, options.precision - 1);
+            data[i] = IJSVGExporterPathFloatToFixed(+fabs(rounded - d), options.precision + 1)
+                    >= kIJSVGExporterPathInstructionErrorThreshold
+                ? +IJSVGExporterPathFloatToFixed(d, options.precision)
+                : rounded;
+        }
+    }
+}
+
+ (void)convertInstructionsToRoundRelativeCoordinates:(NSArray<IJSVGExporterPathInstruction*>*)instructions
+                                 floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions
+{
+    CGFloat relSubPoint[2] = { 0.f, 0.f };
+    for (IJSVGExporterPathInstruction* instruction in instructions) {
+        char instructionChar = instruction.instruction;
+        NSInteger length = instruction.dataLength;
+        CGFloat* data = instruction.data;
+        if(strchr("mltqsc", instructionChar) != NULL) {
+            for (NSInteger i = length; i--;) {
+                data[i] += instruction.base[i % 2] - relSubPoint[i % 2];
+            }
+        } else if(instructionChar == 'h') {
+            data[0] += instruction.base[0] - relSubPoint[0];
+        } else if(instructionChar == 'v') {
+            data[0] += instruction.base[1] - relSubPoint[1];
+        } 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') {
+            relSubPoint[0] += data[0];
+        } else if(instructionChar == 'v') {
+            relSubPoint[1] += data[0];
+        } else {
+            relSubPoint[0] += data[length - 2];
+            relSubPoint[1] += data[length - 1];
+        }
+        IJSVGExporterPathInstructionRoundData(relSubPoint, 2, floatingPointOptions);
+    }
+}
+
+ (void)convertInstructionsToMixedAbsoluteRelative:(NSArray<IJSVGExporterPathInstruction*>*)instructions
+                              floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions
+{
+    IJSVGExporterPathInstruction* prevInstruction = nil;
+    for (IJSVGExporterPathInstruction* instruction in instructions) {
+        if(prevInstruction == nil || instruction.dataLength == 0) {
+            prevInstruction = instruction;
+            continue;
+        }
+
+        char instructionChar = instruction.instruction;
+        CGFloat* data = instruction.data;
+        NSInteger length = instruction.dataLength;
+        CGFloat* adata = (CGFloat*)malloc(sizeof(CGFloat) * length);
+        memcpy(adata, data, sizeof(CGFloat) * length);
+
+        if(strchr("mltqsc", instructionChar) != NULL) {
+            for (NSInteger i = length; i--;) {
+                adata[i] += instruction.base[i % 2];
+            }
+        } else if(instructionChar == 'h') {
+            adata[0] += instruction.base[0];
+        } else if(instructionChar == 'v') {
+            adata[0] += instruction.base[1];
+        } else if(instructionChar == 'a') {
+            adata[5] += instruction.base[0];
+            adata[6] += instruction.base[1];
+        }
+
+        IJSVGExporterPathInstructionRoundData(adata, length, floatingPointOptions);
+
+        IJSVGExporterPathInstruction* ainstruction = nil;
+        ainstruction = [[IJSVGExporterPathInstruction alloc] initWithInstruction:instructionChar
+                                                                        dataCount:length];
+        memcpy(ainstruction.data, adata, sizeof(CGFloat) * length);
+
+        // run these through our default string runner
+        // to compare the outputs
+        NSString* orig = [self pathStringFromInstructions:@[ instruction ]
+                                     floatingPointOptions:floatingPointOptions];
+        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)) {
+            instruction.instruction = toupper(instructionChar);
+            memcpy(data, adata, sizeof(CGFloat) * length);
+        }
+        (void)free(adata), adata = NULL;
+        prevInstruction = instruction;
+    }
+}
+
+ (void)convertInstructionsDataToRounded:(NSArray<IJSVGExporterPathInstruction*>*)instructions
+                    floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions
+{
+    for (IJSVGExporterPathInstruction* instruction in instructions) {
+        CGFloat* data = instruction.data;
+        IJSVGExporterPathInstructionRoundData(data, instruction.dataLength,
+            floatingPointOptions);
+    }
+}
+
+ (NSArray<IJSVGExporterPathInstruction*>*)convertInstructionsCurves:(NSArray<IJSVGExporterPathInstruction*>*)instructions
+                                                floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions
+{
+    NSMutableArray<IJSVGExporterPathInstruction*>* nInstructions = nil;
+    nInstructions = [[NSMutableArray alloc] initWithCapacity:instructions.count];
+    IJSVGExporterPathInstruction* lastInstruction = nil;
+    for (IJSVGExporterPathInstruction* instruction in instructions) {
+        lastInstruction = nInstructions.lastObject;
+        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])) {
+                IJSVGExporterPathInstruction* nInstruction = nil;
+                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])) {
+                IJSVGExporterPathInstruction* nInstruction = nil;
+                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) {
+                IJSVGExporterPathInstruction* nInstruction = nil;
+                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(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];
+                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]) {
+                IJSVGExporterPathInstruction* nInstruction = nil;
+                nInstruction = [[IJSVGExporterPathInstruction alloc] initWithInstruction:'t'
+                                                                                dataCount:2];
+                nInstruction.data[0] = instruction.data[2];
+                nInstruction.data[1] = instruction.data[3];
+                [nInstructions addObject:nInstruction];
+                continue;
+            }
+        }
+        [nInstructions addObject:instruction];
+    }
+    return nInstructions;
 }

 + (void)convertInstructionsToRelativeCoordinates:(NSArray<IJSVGExporterPathInstruction*>*)instructions
+                            floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions
 {
-    CGFloat point[2] = { 0, 0 };
-    CGFloat subpathPoint[2] = { 0, 0 };
+    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];
-                }
-
-            } 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];
-
-            } 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') {
-
-                instruction = 'h';
-
-                data[0] -= point[0];
-
-                point[0] += data[0];
-
-            } else if (instruction == 'V') {
-
-                instruction = 'v';
-
-                data[0] -= point[1];
-
-                point[1] += data[0];
+                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] -= cursor[0];
+                cursor[0] += data[0];
+                break;
+            }
+            case 'v': {
+                cursor[1] += data[0];
+                break;
+            }
+            case 'V': {
+                instruction = 'v';
+                data[0] -= cursor[1];
+                cursor[1] += data[0];
+                break;
+            }
+            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;
            }
-
-            // reset the instruction
-            [anInstruction setInstruction:instruction];
-
-        } else if (instruction == 'Z' || instruction == 'z') {
-            point[0] = subpathPoint[0];
-            point[1] = subpathPoint[1];
        }

-        // increment index
+        // 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++;
    }
 }

 + (NSArray<IJSVGExporterPathInstruction*>*)instructionsFromPath:(CGPathRef)path
+                                           floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions
 {

    // 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) {
@@ -323,8 +551,8 @@ void IJSVGExporterPathInstructionCommandFree(IJSVGExporterPathInstructionCommand

        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;
@@ -337,17 +565,17 @@ void IJSVGExporterPathInstructionCommandFree(IJSVGExporterPathInstructionCommand
        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;
            }
@@ -361,8 +589,8 @@ void IJSVGExporterPathInstructionCommandFree(IJSVGExporterPathInstructionCommand
            // 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;
@@ -378,9 +606,10 @@ void IJSVGExporterPathInstructionCommandFree(IJSVGExporterPathInstructionCommand
            CGPoint controlPoint1 = pathElement->points[0];
            CGPoint controlPoint2 = pathElement->points[1];
            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;
@@ -394,8 +623,8 @@ void IJSVGExporterPathInstructionCommandFree(IJSVGExporterPathInstructionCommand

        case kCGPathElementCloseSubpath: {
            // close command
-            instruction = [[[IJSVGExporterPathInstruction alloc] initWithInstruction:'Z'
-                                                                           dataCount:0] autorelease];
+            instruction = [[IJSVGExporterPathInstruction alloc] initWithInstruction:'Z'
+                                                                           dataCount:0];
            [instructions addObject:instruction];
            break;
        }
@@ -407,11 +636,11 @@ void IJSVGExporterPathInstructionCommandFree(IJSVGExporterPathInstructionCommand

    // 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 +1,69 @@
+//
+//  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:self.backingScaleFactor];
+}
+
+- (void)layoutSublayers
+{
+    CGRect frame = _sublayer.innerBoundingBox;
+    _hostingLayer.frame = frame;
+    _hostingLayer.contents = (__bridge id)_image;
+}
+
+- (NSArray<CALayer<IJSVGBasicLayer>*>*)debugLayers
+{
+    return @[_sublayer];
+}
+
+@end
@@ -6,18 +6,16 @@
 //  Copyright © 2016 Curtis Hard. All rights reserved.
 //

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

@interface IJSVGGradientLayer : IJSVGLayer {
 }

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

@end

@@ -6,46 +6,24 @@
 //  Copyright © 2016 Curtis Hard. All rights reserved.
 //

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

@implementation IJSVGGradientLayer

-@synthesize viewBox;
-@synthesize gradient;
-@synthesize absoluteTransform;
-@synthesize objectRect;
-
- (void)dealloc
+- (BOOL)requiresBackingScale
 {
-    (void)([gradient release]), gradient = nil;
-    [super dealloc];
-}
-
- (id)init
-{
-    if ((self = [super init]) != nil) {
-        self.requiresBackingScaleHelp = YES;
-        self.shouldRasterize = YES;
-    }
-    return self;
+    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;
        }
@@ -55,7 +33,7 @@

 - (void)setOpacity:(float)opacity
 {
-    if (opacity != 1.f) {
+    if(opacity != 1.f) {
        self.opaque = NO;
    }
    [super setOpacity:opacity];
@@ -64,40 +42,66 @@
 - (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];
 }

+- (CALayer<IJSVGDrawableLayer> *)referencingLayer
+{
+    return [super referencingLayer] ?: self.superlayer;
+}
+
 - (void)drawInContext:(CGContextRef)ctx
 {
    [super drawInContext:ctx];

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

-    // draw the gradient
-    CGAffineTransform trans = CGAffineTransformMakeTranslation(-CGRectGetMinX(objectRect),
-        -CGRectGetMinY(objectRect));
-    CGAffineTransform transform = CGAffineTransformConcat(absoluteTransform, trans);
-    CGContextSaveGState(ctx);
+    // perform the draw
+    CGRect bounds = CGRectZero;
+    CGAffineTransform transform = CGAffineTransformIdentity;
+    CALayer<IJSVGDrawableLayer>* layer = (CALayer<IJSVGDrawableLayer>*)self.referencingLayer;
+    if(self.gradient.units == IJSVGUnitUserSpaceOnUse) {
+        IJSVGRootLayer* rootNode = (IJSVGRootLayer*)[IJSVGLayer rootLayerForLayer:self];
+        bounds = [rootNode.viewBox computeValue:CGSizeZero];
+        transform = [IJSVGLayer userSpaceTransformForLayer:layer];
+    } else {
+        bounds = IJSVGLayerGetBoundingBoxBounds(layer);
+    }
+    
+    // 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:transform
-                           viewPort:self.viewBox];
-    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
@@ -6,10 +6,18 @@
 //  Copyright © 2017 Curtis Hard. All rights reserved.
 //

-#import "IJSVGLayer.h"
-#import "IJSVGShapeLayer.h"
+#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, strong) IJSVGUnitSize* intrinsicSize;
+@property (nonatomic, strong) IJSVGUnitRect* viewBox;
+@property (nonatomic, assign) IJSVGViewBoxAlignment viewBoxAlignment;
+@property (nonatomic, assign) IJSVGViewBoxMeetOrSlice viewBoxMeetOrSlice;

@end
@@ -6,8 +6,16 @@
 //  Copyright © 2017 Curtis Hard. All rights reserved.
 //

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

@implementation IJSVGGroupLayer

+- (CGRect)innerBoundingBox
+{
+    return self.outerBoundingBox;
+}
+
@end
@@ -6,14 +6,19 @@
 //  Copyright © 2017 Curtis Hard. All rights reserved.
 //

-#import "IJSVGLayer.h"
+#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 {
+@interface IJSVGImageLayer : IJSVGTileLayer {
 }

- (id)initWithImage:(NSImage*)image;
- (id)initWithCGImage:(CGImageRef)imageRef;
+@property (nonatomic, strong) IJSVGImage* image;
+
+- (id)initWithImage:(IJSVGImage*)image;

@end
@@ -6,50 +6,43 @@
 //  Copyright © 2017 Curtis Hard. All rights reserved.
 //

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

@implementation IJSVGImageLayer

- (id)initWithImage:(NSImage*)image
+- (id)initWithImage:(IJSVGImage*)image
 {
-    NSRect rect = (NSRect){
-        .origin = NSZeroPoint,
-        .size = image.size
-    };
-    CGImageRef ref = [image CGImageForProposedRect:&rect
-                                           context:nil
-                                             hints:nil];
-    return [self initWithCGImage:ref];
-}
-
- (id)initWithCGImage:(CGImageRef)imageRef
-{
-    if ((self = [super init]) != nil) {
-        // set the contents
-        self.contents = (id)imageRef;
-
-        // make sure we say we need help
-        self.requiresBackingScaleHelp = YES;
-        self.shouldRasterize = YES;
-
-        // set the frame, simple stuff
-        self.frame = (CGRect){
-            .origin = CGPointZero,
-            .size = CGSizeMake(CGImageGetWidth(imageRef),
-                CGImageGetHeight(imageRef))
-        };
+    if((self = [super init]) != nil) {
+        self.image = image;
    }
    return self;
 }

- (void)setNeedsDisplay
+- (BOOL)requiresBackingScale
 {
-    // swap the content around on call
-    // because set needs display discards previous
-    // content - yolo!
-    id oldContent = self.contents;
-    [super setNeedsDisplay];
-    self.contents = oldContent;
+    return YES;
+}
+
+- (void)setImage:(IJSVGImage *)image
+{
+    _image = image;
+    [self setNeedsDisplay];
+}
+
+- (void)drawInContext:(CGContextRef)ctx
+{
+    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
@@ -6,8 +6,8 @@
 //  Copyright © 2017 Curtis Hard. All rights reserved.
 //

-#import "IJSVGRendering.h"
-#import "IJSVGTransaction.h"
+#import <IJSVG/IJSVGRendering.h>
+#import <IJSVG/IJSVGTransaction.h>
 #import <QuartzCore/QuartzCore.h>

@class IJSVGShapeLayer;
@@ -15,31 +15,177 @@
@class IJSVGPatternLayer;
@class IJSVGStrokeLayer;
@class IJSVGGroupLayer;
+@class IJSVGLayer;
+@class IJSVGFilter;
+@class IJSVGTraitedColorStorage;

-@interface IJSVGLayer : CALayer {
+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,
+    IJSVGLayerFillTypePattern,
+    IJSVGLayerFillTypeGradient,
+    IJSVGLayerFillTypeUnknown
+};
+
+typedef NS_ENUM(NSUInteger, IJSVGLayerUsageType) {
+    IJSVGLayerUsageTypeFillGeneric,
+    IJSVGLayerUsageTypeFillPattern,
+    IJSVGLayerUsageTypeFillGradient,
+    IJSVGLayerUsageTypeStrokeGeneric,
+    IJSVGLayerUsageTypeStrokePattern,
+    IJSVGLayerUsageTypeStrokeGradient,
+    IJSVGLayerUsageTypeStroke
+};
+
+@protocol IJSVGPathableLayer <NSObject>
+
+@required
+@property (nonatomic, assign) CGPathRef path;
+
+@end
+
+@protocol IJSVGBasicLayer <NSObject>
+
+@required
+@property (nonatomic, assign) CGFloat backingScaleFactor;
+@property (nonatomic, readonly) BOOL requiresBackingScale;
+@property (nonatomic, assign) IJSVGRenderQuality renderQuality;
+@property (nonatomic, readonly) NSArray<CALayer<IJSVGBasicLayer>*>* debugLayers;
+
+@end
+
+@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, assign) 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;
+ (IJSVGLayerFillType)fillTypeForFill:(id)fill;

 + (NSArray*)deepestSublayersOfLayer:(CALayer*)layer;
-+ (void)recursivelyWalkLayer:(CALayer*)layer
-                   withBlock:(void (^)(CALayer* layer, BOOL isMask))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
+            options:(IJSVGLayerDrawingOptions)options;
+
+ (void)applyBlendingMode:(CGBlendMode)blendMode
+                toContext:(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<IJSVGMaskingLayer>*)maskLayer
+                    toLayer:(CALayer<IJSVGDrawableLayer>*)layer
+                  inContext:(CGContextRef)context
+               drawingBlock:(dispatch_block_t)drawingBlock;
+
+ (CALayer<IJSVGDrawableLayer>*)rootLayerForLayer:(CALayer<IJSVGDrawableLayer>*)layer;
+ (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;
+
@end
@@ -6,34 +6,480 @@
 //  Copyright © 2017 Curtis Hard. All rights reserved.
 //

-#import "IJSVG.h"
-#import "IJSVGGroupLayer.h"
-#import "IJSVGLayer.h"
-#import "IJSVGShapeLayer.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 gradientFillLayer;
-@synthesize patternFillLayer;
-@synthesize gradientStrokeLayer;
-@synthesize patternStrokeLayer;
-@synthesize strokeLayer;
-@synthesize requiresBackingScaleHelp;
-@synthesize backingScaleFactor;
+@synthesize backingScaleFactor = _backingScaleFactor;
+@synthesize requiresBackingScale;
+@synthesize renderQuality;
@synthesize blendingMode;
-@synthesize convertMasksToPaths;
+@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)([_maskingLayer release]), _maskingLayer = nil;
-    [super dealloc];
+    if(_clipPath != NULL) {
+        CGPathRelease(_clipPath);
+    }
+}
+
+- (instancetype)init
+{
+    if((self = [super init]) != nil) {
+        _boundingBox = CGRectNull;
+        _outerBoundingBox = CGRectNull;
+    }
+    return self;
+}
+
+- (id<CAAction>)actionForKey:(NSString*)event
+{
+    return nil;
+}
+
+- (CAShapeLayerFillRule)fillRule
+{
+    return kCAFillRuleNonZero;
+}
+
+- (CAShapeLayerFillRule)clipRule
+{
+    if(_clipRule == nil) {
+        return self.fillRule;
+    }
+    return _clipRule;
+}
+
+ (IJSVGLayerFillType)fillTypeForFill:(id)fill
+{
+    if([fill isKindOfClass:IJSVGColorNode.class]) {
+        return IJSVGLayerFillTypeColor;
+    }
+    if([fill isKindOfClass:IJSVGGradient.class]) {
+        return IJSVGLayerFillTypeGradient;
+    }
+    if([fill isKindOfClass:IJSVGPattern.class]) {
+        return IJSVGLayerFillTypePattern;
+    }
+    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;
+    CALayer<IJSVGDrawableLayer>* parentLayer = layer;
+    while((parentLayer = parentLayer.referencingLayer) != nil) {
+        identity = [self absoluteTransformForLayer:parentLayer];
+        
+        // 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;
+        }
+    }
+    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;
+    while([parentLayer isKindOfClass:IJSVGRootLayer.class] == NO &&
+          parentLayer.referencingLayer != nil) {
+        parentLayer = (CALayer<IJSVGDrawableLayer>*)parentLayer.referencingLayer;
+    }
+    return parentLayer;
+}
+
+ (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
+        IJSVGLayerDrawingOptions opt = IJSVGLayerDrawingOptionIgnoreClipping;
+        BOOL ignoreClipping = (options & opt) == opt;
+        if(ignoreClipping == YES || layer.clipLayers == nil) {
+            drawingBlock();
+            return;
+        }
+        [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) {
+        drawingBlock();
+        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
+//{
+//    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
+{
+    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;
+    }
+    
+    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);
+        }
+        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);
+}
+
+ (void)clipContextWithMask:(CALayer<IJSVGDrawableLayer>*)maskLayer
+                    toLayer:(CALayer<IJSVGDrawableLayer>*)layer
+                  inContext:(CGContextRef)ctx
+               drawingBlock:(dispatch_block_t)drawingBlock
+{
+    CGContextSaveGState(ctx);
+    CGFloat scale = layer.backingScaleFactor;
+    CGImageRef maskImage = [self newMaskImageForLayer:maskLayer
+                                              options:IJSVGLayerDrawingOptionNone
+                                                scale:scale];
+    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 alphaMask = [self newImageForLayer:layer
+                                          options:options
+                                       colorSpace:colorSpace
+                                       bitmapInfo:kCGImageAlphaNone
+                                            scale:scale];
+    // low - high pairs
+    const CGFloat colors[6] = {
+        0.f, 11.f,
+        0.f, 11.f,
+        0.f, 11.f
+    };
+    CGImageRef masked = CGImageCreateWithMaskingColors(alphaMask, colors);
+    CGImageRelease(alphaMask);
+    CGColorSpaceRelease(colorSpace);
+    return masked;
+}
+
+ (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
+{
+    CALayer<IJSVGDrawableLayer>* referenceLayer = layer.referencingLayer ?: layer;
+    CGRect frame = layer.outerBoundingBox;
+    CGRect bounds = CGRectApplyAffineTransform(layer.innerBoundingBox,
+                                               [self userSpaceTransformForLayer:referenceLayer]);
+    CGContextRef offscreenContext = CGBitmapContextCreate(NULL,
+                                                          ceilf(frame.size.width*scale),
+                                                          ceilf(frame.size.height*scale),
+                                                          8, 0, colorSpace, bitmapInfo);
+    CGContextScaleCTM(offscreenContext, scale, scale);
+    CGContextConcatCTM(offscreenContext, CGAffineTransformMakeTranslation(-bounds.origin.x,
+                                                                          -bounds.origin.y));
+    [IJSVGLayer renderLayer:layer
+                  inContext:offscreenContext
+                    options:options];
+    CGImageRef image = CGBitmapContextCreateImage(offscreenContext);
+    CGContextRelease(offscreenContext);
+    return image;
+}
+
+ (CGRect)absoluteFrameForLayer:(CALayer<IJSVGDrawableLayer>*)layer
+{
+    return (CGRect) {
+      .origin = [self absoluteOriginForLayer:layer],
+      .size = layer.frame.size
+    };
+}
+
+ (CGPoint)absoluteOriginForLayer:(CALayer<IJSVGDrawableLayer>*)layer
+{
+    CGPoint point = CGPointZero;
+    CALayer<IJSVGDrawableLayer>* pLayer = layer;
+    while (pLayer != nil) {
+        point.x += pLayer.frame.origin.x;
+        point.y += pLayer.frame.origin.y;
+        pLayer = pLayer.referencingLayer;
+    }
+    return point;
 }

 + (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 {
@@ -43,67 +489,108 @@
    return arr;
 }

-+ (void)recursivelyWalkLayer:(CALayer*)layer
-                   withBlock:(void (^)(CALayer* layer, BOOL isMask))block
+ (void)recursivelyWalkLayer:(CALayer<IJSVGBasicLayer>*)layer
+                   withBlock:(void (^)(CALayer<IJSVGBasicLayer>* layer, BOOL* stop))block
 {
    // call for layer and mask if there is one
-    block(layer, NO);
-
-    // do the mask too!
-    if (layer.mask != nil) {
-        block(layer.mask, YES);
+    BOOL stop = NO;
+    block(layer, &stop);
+    if(stop == YES) {
+        return;
    }

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

- (void)setBackingScaleFactor:(CGFloat)newFactor
+ (void)setBackingScaleFactor:(CGFloat)scale
+                renderQuality:(IJSVGRenderQuality)quality
+           recursivelyToLayer:(CALayer<IJSVGDrawableLayer>*)layer
 {
-    if (self.backingScaleFactor == newFactor) {
-        return;
-    }
-    backingScaleFactor = newFactor;
-    self.contentsScale = newFactor;
-    self.rasterizationScale = newFactor;
-    [self setNeedsDisplay];
+    [self recursivelyWalkLayer:layer
+                     withBlock:^(CALayer<IJSVGDrawableLayer>*sublayer, BOOL *stop) {
+        if(sublayer.requiresBackingScale == YES) {
+            sublayer.backingScaleFactor = scale;
+        }
+        sublayer.renderQuality = quality;
+    }];
 }

- (void)_customRenderInContext:(CGContextRef)ctx
+ (void)logLayer:(CALayer<IJSVGDrawableLayer>*)layer
 {
-    if (self.convertMasksToPaths == YES && _maskingLayer != nil) {
-        CGContextSaveGState(ctx);
-        [self applySublayerMaskToContext:ctx
-                             forSublayer:(IJSVGLayer*)self
-                              withOffset:CGPointZero];
-        [super renderInContext:ctx];
-        CGContextRestoreGState(ctx);
+    [self logLayer:layer
+             depth:0];
+}
+
+ (void)logLayer:(CALayer<IJSVGDrawableLayer>*)layer
+           depth:(NSUInteger)depth
+{
+    NSLog(@"%@ %@ frame: %@ transform: %@",[@"" stringByPaddingToLength:depth
+                                    withString:@"- - "
+                               startingAtIndex:0],  layer,
+          NSStringFromRect(layer.frame),
+          [IJSVGTransform affineTransformToSVGTransformComponentString:layer.affineTransform]);
+    for(CALayer<IJSVGDrawableLayer>* sublayer in layer.debugLayers) {
+        [self logLayer:sublayer
+                 depth:depth+1];
+    }
+}
+
+ (CGRect)calculateFrameForSublayers:(NSArray<CALayer<IJSVGDrawableLayer>*>*)layers
+{
+    CGRect rect = CGRectNull;
+    for(CALayer<IJSVGDrawableLayer>* layer in layers) {
+        CGRect layerFrame = layer.outerBoundingBox;
+        // if we are a transform layer, we can just apply its transform
+        // to its sublayers and keep going down the tree
+        if([layer isKindOfClass:IJSVGTransformLayer.class] == YES) {
+            CGRect frame = [self calculateFrameForSublayers:layer.sublayers];
+            frame = CGRectApplyAffineTransform(frame, layer.affineTransform);
+            layerFrame = frame;
+        }
+        if(CGRectIsNull(rect)) {
+            rect = layerFrame;
+            continue;
+        }
+        rect = CGRectUnion(rect, layerFrame);
+    }
+    return rect;
+}
+
+- (void)setBackingScaleFactor:(CGFloat)newFactor
+{
+    if(_backingScaleFactor == newFactor) {
+        return;
+    }
+    
+    _backingScaleFactor = newFactor;
+    self.contentsScale = newFactor;
+    self.rasterizationScale = newFactor;
+    
+    // make sure its applied to any mask or clipPath
+    _maskLayer.backingScaleFactor = newFactor;
+    for(CALayer<IJSVGDrawableLayer>* clipLayer in _clipLayers) {
+        clipLayer.backingScaleFactor = newFactor;
+    }
+}
+
+- (void)performRenderInContext:(CGContextRef)ctx
+{
+    if(_maskLayer != nil) {
+        [self.class clipContextWithMask:_maskLayer
+                                toLayer:self
+                              inContext:ctx
+                           drawingBlock:^{
+            [super renderInContext:ctx];
+        }];
        return;
    }
    [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
@@ -115,7 +602,7 @@

    // 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];
@@ -126,14 +613,14 @@

    // 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);
@@ -144,6 +631,16 @@
    CGContextConcatCTM(context, sublayerTransform);
 }

+- (CGAffineTransform)absoluteTransform
+{
+    return [IJSVGLayer absoluteTransformForLayer:self];
+}
+
+- (BOOL)requiresBackingScale
+{
+    return _maskLayer != nil || (_clipLayers != nil && _clipLayers.count != 0);
+}
+
 - (IJSVGShapeLayer*)maskingLayer
 {
    return (IJSVGShapeLayer*)_maskingLayer ?: nil;
@@ -151,19 +648,133 @@

 - (void)renderInContext:(CGContextRef)ctx
 {
-    if (self.blendingMode != kCGBlendModeNormal) {
-        CGContextSaveGState(ctx);
-        CGContextSetBlendMode(ctx, self.blendingMode);
-        [self _customRenderInContext:ctx];
-        CGContextRestoreGState(ctx);
-        return;
-    }
-    [self _customRenderInContext:ctx];
+    [IJSVGLayer renderLayer:self
+                  inContext:ctx
+                    options:IJSVGLayerDrawingOptionNone];
 }

- (id<CAAction>)actionForKey:(NSString*)event
+- (CGRect)absoluteFrame
 {
+    return [self.class absoluteFrameForLayer:self];
+}
+
+- (CGRect)boundingBox
+{
+    return CGRectIsNull(_boundingBox) == NO ? _boundingBox : self.frame;
+}
+
+- (CGRect)outerBoundingBox
+{
+    return CGRectIsNull(_outerBoundingBox) == NO ? _outerBoundingBox : self.frame;
+}
+
+- (CGRect)boundingBoxBounds
+{
+    return (CGRect) {
+        .origin = CGPointZero,
+        .size = self.boundingBox.size
+    };
+}
+
+- (CGRect)innerBoundingBox
+{
+    return (CGRect) {
+        .origin = CGPointZero,
+        .size = self.outerBoundingBox.size
+    };
+}
+
+- (CALayer<IJSVGDrawableLayer> *)referencingLayer
+{
+    return _referencingLayer ?: self.superlayer;
+}
+
+-(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;
+}
+
+- (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) IJSVGLayer* 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
@@ -6,36 +6,103 @@
 //  Copyright © 2017 Curtis Hard. All rights reserved.
 //

-#import "IJSVGPatternLayer.h"
+#import <IJSVG/IJSVGPatternLayer.h>
+#import <IJSVG/IJSVGTransform.h>
+#import <IJSVG/IJSVGUnitRect.h>
+#import <IJSVG/IJSVGViewBox.h>
+
+@interface IJSVGPatternLayer ()
+
+@property (nonatomic, assign, readonly) CGSize cellSize;
+@property (nonatomic, assign) CGRect viewBox;
+
+@end

@implementation IJSVGPatternLayer

-@synthesize pattern;
-@synthesize patternNode;
-
- (void)dealloc
+- (BOOL)requiresBackingScale
 {
-    (void)([pattern release]), pattern = nil;
-    (void)([patternNode release]), patternNode = nil;
-    [super dealloc];
+    return YES;
 }

- (id)init
+- (void)setBackingScaleFactor:(CGFloat)backingScaleFactor
 {
-    if ((self = [super init]) != nil) {
-        self.requiresBackingScaleHelp = YES;
-        self.shouldRasterize = YES;
-    }
-    return self;
+    [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;
-    [layer.pattern renderInContext:ctx];
+    IJSVGPatternLayer* layer = (__bridge IJSVGPatternLayer*)info;
+    CGSize size = layer.cellSize;
+    CGContextSaveGState(ctx);
+    CGRect rect = CGRectMake(0.f, 0.f, size.width, size.height);
+    CGContextClipToRect(ctx, rect);
+    
+    IJSVGViewBoxAlignment alignment = layer.patternNode.viewBoxAlignment;
+    IJSVGViewBoxMeetOrSlice meetOrSlice = layer.patternNode.viewBoxMeetOrSlice;
+    CGRect viewBox = layer.viewBox;
+    IJSVGViewBoxDrawingBlock drawBlock = ^(CGFloat scale[]) {
+        [IJSVGLayer renderLayer:layer.pattern
+                      inContext:ctx
+                        options:IJSVGLayerDrawingOptionNone];
+    };
+    IJSVGContextDrawViewBox(ctx, viewBox, rect, alignment, meetOrSlice,
+                            drawBlock);
+    CGContextSaveGState(ctx);
 };

+- (CALayer<IJSVGDrawableLayer>*)referencingLayer
+{
+    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
@@ -45,13 +112,32 @@ void IJSVGPatternDrawingCallBack(void* info, CGContextRef ctx)
    CGColorSpaceRef patternSpace = CGColorSpaceCreatePattern(NULL);
    CGContextSetFillColorSpace(ctx, patternSpace);
    CGColorSpaceRelease(patternSpace);
-
+    
+    CALayer<IJSVGDrawableLayer>* layer = (CALayer<IJSVGDrawableLayer>*)self.referencingLayer;
+            
+    // transform us back into the correct space
+    CGAffineTransform transform = CGAffineTransformIdentity;
+    if(_patternNode.units == IJSVGUnitUserSpaceOnUse) {
+        transform = [IJSVGLayer userSpaceTransformForLayer:layer];
+    }
+    
+    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 rect = self.bounds;
-    CGPatternRef ref = CGPatternCreate((void*)self, self.bounds,
-        CGAffineTransformIdentity,
-        roundf(rect.size.width * self.patternNode.width.value),
-        roundf(rect.size.height * self.patternNode.height.value),
+    CGRect selfBounds = IJSVGLayerGetBoundingBoxBounds(self);
+    CGPatternRef ref = CGPatternCreate((void*)self, selfBounds,
+        transform, _cellSize.width, _cellSize.height,
        kCGPatternTilingConstantSpacing,
        true, &callbacks);

@@ -61,7 +147,17 @@ void IJSVGPatternDrawingCallBack(void* info, CGContextRef ctx)
    CGPatternRelease(ref);

    // fill it
-    CGContextFillRect(ctx, rect);
+    CGContextFillRect(ctx, selfBounds);
+}
+
+- (NSArray<CALayer<IJSVGDrawableLayer>*>*)debugLayers
+{
+    return @[self.pattern];
+}
+
+- (IJSVGTraitedColorStorage*)colors
+{
+    return _pattern.colors;
 }

@end
@@ -1,23 +0,0 @@
-//
-//  IJSVGRadialGradient.h
-//  IJSVGExample
-//
-//  Created by Curtis Hard on 03/09/2014.
-//  Copyright (c) 2014 Curtis Hard. All rights reserved.
-//
-
-#import "IJSVGGradient.h"
-#import <Foundation/Foundation.h>
-
-@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* radius;
-
-+ (NSGradient*)parseGradient:(NSXMLElement*)element
-                    gradient:(IJSVGRadialGradient*)gradient;
-
-@end
@@ -1,159 +0,0 @@
-//
-//  IJSVGRadialGradient.m
-//  IJSVGExample
-//
-//  Created by Curtis Hard on 03/09/2014.
-//  Copyright (c) 2014 Curtis Hard. All rights reserved.
-//
-
-#import "IJSVGRadialGradient.h"
-
-@implementation IJSVGRadialGradient
-
-@synthesize cx;
-@synthesize cy;
-@synthesize fx;
-@synthesize fy;
-@synthesize radius;
-
- (void)dealloc
-{
-    (void)([cx release]), cx = nil;
-    (void)([cy release]), cy = nil;
-    (void)([fx release]), fx = nil;
-    (void)([fy release]), fy = nil;
-    (void)([radius release]), radius = nil;
-    [super dealloc];
-}
-
- (id)copyWithZone:(NSZone*)zone
-{
-    IJSVGRadialGradient* grad = [super copyWithZone:zone];
-    grad.fx = self.fx;
-    grad.fy = self.fy;
-    grad.cx = self.cx;
-    grad.cy = self.cy;
-    grad.radius = self.radius;
-    return grad;
-}
-
-+ (NSGradient*)parseGradient:(NSXMLElement*)element
-                    gradient:(IJSVGRadialGradient*)gradient
-{
-    // cx defaults to 50% if not specified
-    NSDictionary* kv = @{ @"cx" : @"cx",
-        @"cy" : @"cy",
-        @"r" : @"radius" };
-
-    for (NSString* key in kv.allKeys) {
-        NSString* str = [element attributeForName:key].stringValue;
-        IJSVGUnitLength* unit = nil;
-        if (str != nil) {
-            unit = [IJSVGUnitLength unitWithString:str
-                                      fromUnitType:gradient.units];
-        } else {
-            // spec says to say 50% for missing property default
-            unit = [IJSVGUnitLength unitWithPercentageFloat:.5f];
-        }
-        [gradient setValue:unit
-                    forKey:kv[key]];
-    }
-
-    // fx and fy are the same unless specified otherwise
-    gradient.fx = gradient.cx;
-    gradient.fy = gradient.cy;
-
-    // needs fixing
-    NSString* fx = [element attributeForName:@"fx"].stringValue;
-    if (fx != nil) {
-        gradient.fx = [IJSVGUnitLength unitWithString:fx
-                                         fromUnitType:gradient.units];
-    }
-
-    NSString* fy = [element attributeForName:@"fy"].stringValue;
-    if (fx != nil) {
-        gradient.fy = [IJSVGUnitLength unitWithString:fy
-                                         fromUnitType:gradient.units];
-    }
-
-    if (gradient.gradient != nil) {
-        return nil;
-    }
-
-    NSArray* colors = nil;
-    CGFloat* colorStops = [self.class computeColorStopsFromString:element colors:&colors];
-    NSGradient* ret = [[[NSGradient alloc] initWithColors:colors
-                                              atLocations:colorStops
-                                               colorSpace:IJSVGColor.defaultColorSpace] autorelease];
-    free(colorStops);
-    return ret;
-}
-
- (void)drawInContextRef:(CGContextRef)ctx
-              objectRect:(NSRect)objectRect
-       absoluteTransform:(CGAffineTransform)absoluteTransform
-                viewPort:(CGRect)viewBox
-{
-    BOOL inUserSpace = self.units == IJSVGUnitUserSpaceOnUse;
-    CGFloat radius = 0.f;
-    CGPoint startPoint = CGPointZero;
-    CGPoint gradientStartPoint = CGPointZero;
-    CGPoint gradientEndPoint = CGPointZero;
-
-    // transforms
-    CGAffineTransform selfTransform = IJSVGConcatTransforms(self.transforms);
-
-    CGRect boundingBox = inUserSpace ? viewBox : objectRect;
-
-    // make sure we apply the absolute position to
-    // transform us back into the correct space
-    if (inUserSpace == YES) {
-        CGContextConcatCTM(ctx, absoluteTransform);
-    }
-
-    // compute size based on percentages
-    CGFloat x = [self.cx computeValue:CGRectGetWidth(boundingBox)];
-    CGFloat y = [self.cy computeValue:CGRectGetHeight(boundingBox)];
-    startPoint = CGPointMake(x, y);
-    CGFloat val = MIN(CGRectGetWidth(boundingBox),
-        CGRectGetHeight(boundingBox));
-    radius = [self.radius computeValue:val];
-
-    CGFloat ex = [self.fx computeValue:CGRectGetWidth(boundingBox)];
-    CGFloat ey = [self.fy computeValue:CGRectGetHeight(boundingBox)];
-
-    gradientEndPoint = CGPointMake(ex, ey);
-    gradientStartPoint = startPoint;
-
-    // transform if width or height is not equal - this can only
-    // be done if we are using objectBoundingBox
-    if (inUserSpace == NO && CGRectGetWidth(boundingBox) != CGRectGetHeight(boundingBox)) {
-        CGAffineTransform tr = CGAffineTransformMakeTranslation(gradientStartPoint.x,
-            gradientStartPoint.y);
-        if (CGRectGetWidth(boundingBox) > CGRectGetHeight(boundingBox)) {
-            tr = CGAffineTransformScale(tr, CGRectGetWidth(boundingBox) / CGRectGetHeight(boundingBox), 1);
-        } else {
-            tr = CGAffineTransformScale(tr, 1.f, CGRectGetHeight(boundingBox) / CGRectGetWidth(boundingBox));
-        }
-        tr = CGAffineTransformTranslate(tr, -gradientStartPoint.x, -gradientStartPoint.y);
-        selfTransform = CGAffineTransformConcat(tr, selfTransform);
-    }
-
-    // transform the context
-    CGContextConcatCTM(ctx, selfTransform);
-
-    // draw the gradient
-    CGGradientDrawingOptions options = kCGGradientDrawsBeforeStartLocation | kCGGradientDrawsAfterEndLocation;
-    CGContextDrawRadialGradient(ctx, self.CGGradient,
-        gradientEndPoint, 0,
-        gradientStartPoint,
-        radius, options);
-
-#ifdef IJSVG_DEBUG_GRADIENTS
-    [self _debugStart:gradientStartPoint
-                  end:gradientEndPoint
-              context:ctx];
-#endif
-}
-
-@end
@@ -0,0 +1,24 @@
+//
+//  IJSVGRootLayer.h
+//  IJSVG
+//
+//  Created by Curtis Hard on 15/04/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import <IJSVG/IJSVG.h>
+
+@interface IJSVGRootLayer : IJSVGGroupLayer {
+    
+@private
+    BOOL _disableBackingScalePropagation;
+    
+}
+
+- (void)renderInContext:(CGContextRef)ctx
+               viewPort:(CGRect)viewPort
+           backingScale:(CGFloat)backingScale
+                quality:(IJSVGRenderQuality)quality
+    ignoreIntrinsicSize:(BOOL)ignoreIntrinsicSize;
+
+@end
@@ -0,0 +1,93 @@
+//
+//  IJSVGRootLayer.m
+//  IJSVG
+//
+//  Created by Curtis Hard on 15/04/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import <IJSVG/IJSVGRootLayer.h>
+
+@implementation IJSVGRootLayer
+
+- (void)performRenderInContext:(CGContextRef)ctx
+{
+    if(self.viewBox != nil) {
+        CGRect viewBox = [self.viewBox computeValue:CGSizeZero];
+        __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
+            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);
+        };
+        
+        IJSVGContextDrawViewBox(ctx, viewBox, IJSVGLayerGetBoundingBoxBounds(self),
+                                self.viewBoxAlignment,
+                                self.viewBoxMeetOrSlice, drawingBlock);
+        return;
+    }
+    [super performRenderInContext:ctx];
+}
+
+- (void)setBackingScaleFactor:(CGFloat)backingScaleFactor
+{
+    // get nearest .5f
+    backingScaleFactor = MAX(round(backingScaleFactor * 2.f) / 2.f, .5f);
+    [super setBackingScaleFactor:backingScaleFactor];
+    if(_disableBackingScalePropagation == YES) {
+        return;
+    }
+    [self propagateBackingScalePropertiesToSublayers];
+}
+
+- (void)propagateBackingScalePropertiesToSublayers
+{
+    for(CALayer<IJSVGDrawableLayer>* layer in self.sublayers) {
+        [IJSVGLayer setBackingScaleFactor:self.backingScaleFactor
+                            renderQuality:self.renderQuality
+                       recursivelyToLayer:layer];
+    }
+}
+
+- (void)renderInContext:(CGContextRef)ctx
+               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 renderInContext:ctx];
+}
+
+- (BOOL)treatImplicitOriginAsTransform
+{
+    return NO;
+}
+
+@end
@@ -6,28 +6,17 @@
 //  Copyright © 2017 Curtis Hard. All rights reserved.
 //

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

-@interface IJSVGShapeLayer : CAShapeLayer {
+@interface IJSVGShapeLayer : CAShapeLayer <IJSVGDrawableLayer, IJSVGPathableLayer> {

@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) 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) CGPoint originalPathOrigin;
-@property (nonatomic, assign) BOOL convertMasksToPaths;
@property (nonatomic, assign) IJSVGPrimitivePathType primitiveType;

 - (void)applySublayerMaskToContext:(CGContextRef)context
@@ -6,73 +6,124 @@
 //  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 gradientFillLayer;
-@synthesize patternFillLayer;
-@synthesize gradientStrokeLayer;
-@synthesize patternStrokeLayer;
-@synthesize strokeLayer;
-@synthesize requiresBackingScaleHelp;
-@synthesize backingScaleFactor;
-@synthesize blendingMode;
-@synthesize convertMasksToPaths;
-@synthesize originalPathOrigin;
+@synthesize backingScaleFactor = _backingScaleFactor;
+@synthesize requiresBackingScale;
@synthesize renderQuality;
-@synthesize primitiveType;
+@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)([_maskingLayer release]), _maskingLayer = nil;
-    [super dealloc];
+    if(_clipPath != NULL) {
+        CGPathRelease(_clipPath);
+    }
+}
+
+- (id<CAAction>)actionForKey:(NSString*)event
+{
+    return nil;
+}
+
+- (CGRect)absoluteFrame
+{
+    return [IJSVGLayer absoluteFrameForLayer:self];
+}
+
+- (CGAffineTransform)absoluteTransform
+{
+    return [IJSVGLayer absoluteTransformForLayer:self];
+}
+
+- (CALayer<IJSVGDrawableLayer> *)referencingLayer
+{
+    return _referencingLayer ?: self.superlayer;
+}
+
+- (CGRect)boundingBoxBounds
+{
+    return (CGRect) {
+        .origin = CGPointZero,
+        .size = self.boundingBox.size
+    };
+}
+
+- (CGRect)innerBoundingBox
+{
+    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 (self.backingScaleFactor == newFactor) {
+    if(_backingScaleFactor == newFactor) {
        return;
    }
-    backingScaleFactor = newFactor;
+        
+    _backingScaleFactor = newFactor;
    self.contentsScale = newFactor;
    self.rasterizationScale = newFactor;
+    
+    // make sure its applied to any mask or clipPath
+    _maskLayer.backingScaleFactor = newFactor;
+    
+    for(CALayer<IJSVGDrawableLayer>* clipLayer in _clipLayers) {
+        clipLayer.backingScaleFactor = newFactor;
+    }
+    
    [self setNeedsDisplay];
 }

- (void)_customRenderInContext:(CGContextRef)ctx
+- (void)performRenderInContext:(CGContextRef)ctx
 {
-    if (self.convertMasksToPaths == YES && _maskingLayer != nil) {
-        CGContextSaveGState(ctx);
-        [self applySublayerMaskToContext:ctx
-                             forSublayer:(IJSVGLayer*)self
-                              withOffset:CGPointZero];
-        [super renderInContext:ctx];
-        CGContextRestoreGState(ctx);
+    if(_maskLayer != nil) {
+        [IJSVGLayer clipContextWithMask:_maskLayer
+                                toLayer:self
+                              inContext:ctx
+                           drawingBlock:^{
+            [super renderInContext:ctx];
+        }];
        return;
    }
    [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
@@ -84,7 +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];
@@ -95,14 +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);
@@ -120,31 +171,142 @@

 - (void)renderInContext:(CGContextRef)ctx
 {
-    if (self.blendingMode != kCGBlendModeNormal) {
-        CGContextSaveGState(ctx);
-        CGContextSetBlendMode(ctx, self.blendingMode);
-        [self _customRenderInContext:ctx];
-        CGContextRestoreGState(ctx);
-        return;
-    }
-    [self _customRenderInContext:ctx];
+    [IJSVGLayer renderLayer:(IJSVGLayer*)self
+                  inContext:ctx
+                    options:IJSVGLayerDrawingOptionNone];
 }

- (CGPoint)absoluteOrigin
+- (NSMapTable<NSNumber*,CALayer<IJSVGDrawableLayer>*>*)layerUsageMapTable
 {
-    CGPoint point = CGPointZero;
-    CALayer* pLayer = self;
-    while (pLayer != nil) {
-        point.x += pLayer.frame.origin.x;
-        point.y += pLayer.frame.origin.y;
-        pLayer = pLayer.superlayer;
+    if(_layerUsageMapTable == nil) {
+        _layerUsageMapTable = IJSVGLayerDefaultUsageMapTable();
    }
-    return point;
+    return _layerUsageMapTable;
 }

- (id<CAAction>)actionForKey:(NSString*)event
+- (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;
 }

+-(NSArray<CALayer<IJSVGDrawableLayer>*>*)debugLayers
+{
+    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

@@ -6,7 +6,7 @@
 //  Copyright © 2017 Curtis Hard. All rights reserved.
 //

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

@implementation IJSVGStrokeLayer

@@ -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
@@ -0,0 +1,17 @@
+//
+//  IJSVGTransformLayer.h
+//  IJSVG
+//
+//  Created by Curtis Hard on 31/03/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import <QuartzCore/QuartzCore.h>
+#import <IJSVG/IJSVGLayer.h>
+
+@interface IJSVGTransformLayer : CATransformLayer <IJSVGDrawableLayer> {
+@private
+    NSMapTable<NSNumber*, CALayer<IJSVGDrawableLayer>*>* _layerUsageMapTable;
+}
+
+@end
@@ -0,0 +1,160 @@
+//
+//  IJSVGTransformLayer.m
+//  IJSVG
+//
+//  Created by Curtis Hard on 31/03/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import <IJSVG/IJSVGTransformLayer.h>
+#import <IJSVG/IJSVGTraitedColorStorage.h>
+
+@implementation IJSVGTransformLayer
+
+@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 colors;
+@synthesize absoluteOrigin;
+@synthesize blendingMode;
+@synthesize referencingLayer = _referencingLayer;
+
+- (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];
+}
+
+- (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 +1,88 @@
+//
+//  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
+
+ (IJSVGBitFlags*)allowedAttributes
+{
+    IJSVGBitFlags64* storage = [[IJSVGBitFlags64 alloc] init];
+    [storage addBits:[super allowedAttributes]];
+    [storage setBit:IJSVGNodeAttributeX];
+    [storage setBit:IJSVGNodeAttributeY];
+    [storage setBit:IJSVGNodeAttributeWidth];
+    [storage setBit:IJSVGNodeAttributeHeight];
+    [storage setBit:IJSVGNodeAttributeClipPathUnits];
+    [storage setBit:IJSVGNodeAttributeClipRule];
+    return storage;
+}
+
+- (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
@@ -0,0 +1,22 @@
+//
+//  IJSVGColorNode.h
+//  IJSVG
+//
+//  Created by Curtis Hard on 29/03/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import <IJSVG/IJSVGNode.h>
+
+@interface IJSVGColorNode : IJSVGNode {
+    
+}
+
+@property (nonatomic, strong) NSColor* color;
+@property (nonatomic, assign) BOOL isNoneOrTransparent;
+
+ (IJSVGNode*)colorNodeWithColor:(NSColor*)color;
+
+- (id)initWithColor:(NSColor*)color;
+
+@end
@@ -0,0 +1,33 @@
+//
+//  IJSVGColorNode.m
+//  IJSVG
+//
+//  Created by Curtis Hard on 29/03/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import <IJSVG/IJSVGColorNode.h>
+
+@implementation IJSVGColorNode
+
+ (IJSVGNode*)colorNodeWithColor:(NSColor *)color
+{
+    return [[self alloc] initWithColor:color];
+}
+
+- (id)initWithColor:(NSColor*)color {
+    if((self = [super init]) != nil) {
+        [self addTraits:IJSVGNodeTraitPaintable];
+        self.color = color;
+    }
+    return self;
+}
+
+- (void)applyPropertiesFromNode:(IJSVGNode*)node
+{
+    if([node isKindOfClass:self.class]) {
+        self.color = ((IJSVGColorNode*)node).color;
+    }
+}
+
+@end
@@ -1,21 +0,0 @@
-//
-//  IJSVGDef.h
-//  IJSVGExample
-//
-//  Created by Curtis Hard on 03/09/2014.
-//  Copyright (c) 2014 Curtis Hard. All rights reserved.
-//
-
-#import "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 +1,80 @@
+//
+//  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>
+#import <IJSVG/IJSVGUtils.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.UTF8String;
+    if(name == NULL) {
+        return IJSVGFilterEffectSourceGraphic;
+    }
+    if(IJSVGCharBufferCaseInsensitiveCompare(name, "sourcegraphic") == YES) {
+        return IJSVGFilterEffectSourceGraphic;
+    }
+    if(IJSVGCharBufferCaseInsensitiveCompare(name, "sourcealpha") == YES) {
+        return IJSVGFilterEffectSourceAlpha;
+    }
+    if(IJSVGCharBufferCaseInsensitiveCompare(name, "backgroundimage") == YES) {
+        return IJSVGFilterEffectSourceBackgroundImage;
+    }
+    if(IJSVGCharBufferCaseInsensitiveCompare(name, "backgroundalpha") == YES) {
+        return IJSVGFilterEffectSourceBackgroundAlpha;
+    }
+    if(IJSVGCharBufferCaseInsensitiveCompare(name, "fillpaint") == YES) {
+        return IJSVGFilterEffectSourceFillPaint;
+    }
+    if(IJSVGCharBufferCaseInsensitiveCompare(name, "strokepain") == YES) {
+        return IJSVGFilterEffectSourceStrokePaint;
+    }
+    return IJSVGFilterEffectSourcePrimitiveReference;
+}
+
+ (IJSVGFilterEffectEdgeMode)edgeModeForString:(NSString*)string
+{
+    const char* name = string.lowercaseString.UTF8String;
+    if(name == NULL) {
+        return IJSVGFilterEffectEdgeModeNone;
+    }
+    if(IJSVGCharBufferCompare(name, "none") == YES) {
+        return IJSVGFilterEffectEdgeModeNone;
+    }
+    if(IJSVGCharBufferCompare(name, "wrap") == YES) {
+        return IJSVGFilterEffectEdgeModeWrap;
+    }
+    if(IJSVGCharBufferCompare(name, "duplicate") == YES) {
+        return IJSVGFilterEffectEdgeModeDuplicate;
+    }
+    return IJSVGFilterEffectEdgeModeNone;
+}
+
+- (CIImage*)processImage:(CIImage*)image
+{
+    return image;
+}
+
+@end
@@ -7,14 +7,11 @@
 //

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

@interface IJSVGForeignObject : IJSVGNode {
-
-    NSString * requiredExtension;
-    
 }

-@property ( nonatomic, copy ) NSString * requiredExtension;
+@property (nonatomic, copy) NSString* requiredExtension;

@end
@@ -6,16 +6,8 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

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

@implementation IJSVGForeignObject

-@synthesize requiredExtension;
-
- (void)dealloc
-{
-    (void)([requiredExtension release]), requiredExtension = nil;
-    [super dealloc];
-}
-
@end
@@ -6,33 +6,28 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

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

-@interface IJSVGGradient : IJSVGNode
+@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;

-+ (CGFloat*)computeColorStopsFromString:(NSXMLElement*)element
-                                 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*)computedColorList;
+                  bounds:(NSRect)objectRect
+               transform:(CGAffineTransform)absoluteTransform;

@end
--- a/Show More
+++ b/Show More