Adds isNoneOrTransparent to COlor

Adds image generation to IJSVGLayer
Fixes transforms and masking
2022-04-19 18:11:02 +01:00 · 2022-04-18 17:32:20 +01:00 · 2022-04-18 14:45:24 +01:00 · 2022-04-18 11:45:04 +01:00 · 2022-04-17 17:57:52 +01:00 · 2022-04-17 17:57:09 +01:00
133 changed files with 7775 additions and 19364 deletions
@@ -0,0 +1 @@
+.DS_Store
@@ -7,10 +7,24 @@
 	objects = {

 /* Begin PBXBuildFile section */
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+		591A3E4E25CC91F800AD45B7 /* IJSVGParsing.m in Sources */ = {isa = PBXBuildFile; fileRef = 591A3E4C25CC91F800AD45B7 /* IJSVGParsing.m */; };
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@@ -22,7 +36,6 @@
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@@ -49,12 +62,10 @@
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@@ -105,7 +116,6 @@
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@@ -124,15 +134,37 @@
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 /* End PBXBuildFile section */

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+		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>"; };
 /* End PBXFileReference section */

 /* Begin PBXFrameworksBuildPhase section */
@@ -316,6 +352,8 @@
 				59EB758523905F6C00F5AE63 /* IJSVGColor.m */,
 				59EB75A923905F6F00F5AE63 /* IJSVGColorList.h */,
 				59EB757123905F6C00F5AE63 /* IJSVGColorList.m */,
+				59F36506262F1ABB00BCE3FD /* IJSVGColorType.h */,
+				59F36507262F1ABB00BCE3FD /* IJSVGColorType.m */,
 			);
 			path = Colors;
 			sourceTree = "<group>";
@@ -333,12 +371,14 @@
 				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 */,
 			);
 			path = Layers;
 			sourceTree = "<group>";
@@ -363,6 +403,8 @@
 				59EB756923905F6B00F5AE63 /* IJSVGDef.m */,
 				59EB759F23905F6E00F5AE63 /* IJSVGLinearGradient.h */,
 				59EB75C223905F7100F5AE63 /* IJSVGLinearGradient.m */,
+				59EB757223905F6C00F5AE63 /* IJSVGRadialGradient.h */,
+				59EB75A623905F6F00F5AE63 /* IJSVGRadialGradient.m */,
 				59EB75AB23905F6F00F5AE63 /* IJSVGGradient.h */,
 				59EB75D223905F7300F5AE63 /* IJSVGGradient.m */,
 				59EB758B23905F6D00F5AE63 /* IJSVGGroup.h */,
@@ -377,6 +419,10 @@
 				59EB75AA23905F6F00F5AE63 /* IJSVGPattern.m */,
 				59EB756B23905F6B00F5AE63 /* IJSVGText.h */,
 				59EB75C023905F7100F5AE63 /* IJSVGText.m */,
+				59FCC09227F2394D00BB924E /* IJSVGRootNode.h */,
+				59FCC09327F2394D00BB924E /* IJSVGRootNode.m */,
+				59FDBEFE27F3454800AF7038 /* IJSVGColorNode.h */,
+				59FDBEFF27F3454800AF7038 /* IJSVGColorNode.m */,
 			);
 			path = Nodes;
 			sourceTree = "<group>";
@@ -396,6 +442,16 @@
 				59EB75BA23905F7000F5AE63 /* IJSVGUnitLength.m */,
 				59EB759423905F6D00F5AE63 /* IJSVGUtils.h */,
 				59EB758023905F6C00F5AE63 /* IJSVGUtils.m */,
+				5919E65523F47FF60051873A /* IJSVGUnitRect.h */,
+				5919E65623F47FF60051873A /* IJSVGUnitRect.m */,
+				5919E65923F480330051873A /* IJSVGUnitPoint.h */,
+				5919E65A23F480330051873A /* IJSVGUnitPoint.m */,
+				59A24EBA23F480EA0090C374 /* IJSVGUnitSize.h */,
+				59A24EBB23F480EA0090C374 /* IJSVGUnitSize.m */,
+				591A3E4B25CC91F800AD45B7 /* IJSVGParsing.h */,
+				591A3E4C25CC91F800AD45B7 /* IJSVGParsing.m */,
+				59F9EAF62808BB5F00188ACB /* IJSVGViewBox.h */,
+				59F9EAF72808BB5F00188ACB /* IJSVGViewBox.m */,
 			);
 			path = Utils;
 			sourceTree = "<group>";
@@ -427,10 +483,10 @@
 		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>";
@@ -484,8 +540,6 @@
 				59EB757D23905F6C00F5AE63 /* IJSVGImageRep.m */,
 				59EB75CD23905F7200F5AE63 /* IJSVGView.h */,
 				59EB75C123905F7100F5AE63 /* IJSVGView.m */,
-				59EB756E23905F6C00F5AE63 /* IJSVGWriter.h */,
-				59EB758923905F6D00F5AE63 /* IJSVGWriter.m */,
 			);
 			path = Core;
 			sourceTree = "<group>";
@@ -517,7 +571,6 @@
 			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 */,
@@ -562,15 +615,25 @@
 				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 */,
+				5919E65723F47FF60051873A /* IJSVGUnitRect.h in Headers */,
+				5919E65B23F480330051873A /* IJSVGUnitPoint.h in Headers */,
+				591A3E4D25CC91F800AD45B7 /* IJSVGParsing.h in Headers */,
+				59A24EBC23F480EA0090C374 /* IJSVGUnitSize.h in Headers */,
 				59EB764523905F7300F5AE63 /* IJSVGExporter.h in Headers */,
+				59F36508262F1ABB00BCE3FD /* IJSVGColorType.h in Headers */,
 				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 */,
+				590EB7A427F637EF0047CECF /* IJSVGTransformLayer.h in Headers */,
+				5978C46A280A241200D25296 /* IJSVGRootLayer.h in Headers */,
+				59F9EAF82808BB5F00188ACB /* IJSVGViewBox.h in Headers */,
 				59EB760B23905F7300F5AE63 /* IJSVGStyleSheetSelector.h in Headers */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -602,7 +665,7 @@
 		594CF466238FF38E009B251B /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 1100;
+				LastUpgradeCheck = 1220;
 				ORGANIZATIONNAME = "Curtis Hard";
 				TargetAttributes = {
 					594CF46E238FF38E009B251B = {
@@ -644,16 +707,19 @@
 			buildActionMask = 2147483647;
 			files = (
 				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 */,
 				59EB75FB23905F7300F5AE63 /* IJSVGPath.m in Sources */,
+				59F36509262F1ABB00BCE3FD /* IJSVGColorType.m in Sources */,
 				59EB760123905F7300F5AE63 /* IJSVGLayerTree.m in Sources */,
 				59EB763A23905F7300F5AE63 /* IJSVGForeignObject.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 */,
@@ -663,22 +729,25 @@
 				59EB763523905F7300F5AE63 /* IJSVGStyleSheetSelector.m in Sources */,
 				59E7CFB023B148600077D599 /* IJSVGCommandParser.m in Sources */,
 				59EB760723905F7300F5AE63 /* IJSVGNode.m in Sources */,
+				5919E65C23F480330051873A /* IJSVGUnitPoint.m in Sources */,
 				59EB75E923905F7300F5AE63 /* IJSVGStringAdditions.m in Sources */,
+				59FDBF0127F3454800AF7038 /* IJSVGColorNode.m in Sources */,
 				59EB761723905F7300F5AE63 /* IJSVGRadialGradient.m in Sources */,
 				59EB75E223905F7300F5AE63 /* IJSVGColorList.m in Sources */,
 				59EB75ED23905F7300F5AE63 /* IJSVGFontConverter.m in Sources */,
 				59EB763C23905F7300F5AE63 /* IJSVGCommandEllipticalArc.m in Sources */,
 				59EB75E723905F7300F5AE63 /* IJSVGImage.m in Sources */,
-				59EB75FF23905F7300F5AE63 /* IJSVGBezierPathAdditions.m in Sources */,
 				59EB75E623905F7300F5AE63 /* IJSVGStyle.m in Sources */,
 				59EB75EB23905F7300F5AE63 /* IJSVGShapeLayer.m in Sources */,
 				59EB75F623905F7300F5AE63 /* IJSVGColor.m in Sources */,
 				59EB75F323905F7300F5AE63 /* IJSVGGroupLayer.m in Sources */,
+				591A3E4E25CC91F800AD45B7 /* IJSVGParsing.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 */,
@@ -686,14 +755,17 @@
 				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 */,
 				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 */,
@@ -731,6 +803,7 @@
 				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;
@@ -746,6 +819,7 @@
 				GCC_DYNAMIC_NO_PIC = NO;
 				GCC_NO_COMMON_BLOCKS = YES;
 				GCC_OPTIMIZATION_LEVEL = 0;
+				GCC_PREFIX_HEADER = "";
 				GCC_PREPROCESSOR_DEFINITIONS = (
 					"DEBUG=1",
 					"$(inherited)",
@@ -792,6 +866,7 @@
 				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
@@ -805,6 +880,7 @@
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu11;
 				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_PREFIX_HEADER = "";
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
 				GCC_WARN_UNDECLARED_SELECTOR = YES;
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1130"
+   LastUpgradeVersion = "1250"
   version = "1.3">
   <BuildAction
      parallelizeBuildables = "YES"
@@ -15,7 +15,7 @@
 		<key>594CF46E238FF38E009B251B</key>
 		<dict>
 			<key>primary</key>
-			<true/>
+			<true />
 		</dict>
 	</dict>
 </dict>
@@ -19,6 +19,6 @@
 	<key>CFBundleVersion</key>
 	<string>$(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
@@ -7,51 +7,38 @@
 //

 #import "IJSVGStringAdditions.h"
+#import "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] autorelease];
+    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 "IJSVGImageRep.h"
+#import "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] autorelease];
+        if (data == nil) {
+            return nil;
+        }
+
+        // grab the image rep
+        IJSVGImageRep* rep = [[[IJSVGImageRep alloc] initWithData:data] autorelease];
+        NSImage* image = [[[NSImage alloc] init] autorelease];
+        [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
@@ -8,11 +8,16 @@

 #import "IJSVGColor.h"
 #import "IJSVGUtils.h"
+#import "IJSVGStringAdditions.h"
+#import "IJSVGParsing.h"
+
+NSString* const IJSVGColorCurrentColorName = @"currentColor";

@implementation IJSVGColor

 static NSDictionary* _colorTree = nil;

+
 CGFloat* IJSVGColorCSSHSLToHSB(CGFloat hue, CGFloat saturation, CGFloat lightness)
 {
    hue *= (1.f / 360.f);
@@ -239,39 +244,59 @@ CGFloat* IJSVGColorCSSHSLToHSB(CGFloat hue, CGFloat saturation, CGFloat lightnes
                                                         alpha:a]];
 }

+ (BOOL)isNoneOrTransparent:(NSString*)string
+{
+    const char* str = string.lowercaseString.UTF8String;
+    return strcmp(str, "none") == 0 || strcmp(str, "transparent") == 0;
+}
+
 + (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) {
+        (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;
+        }
+        
+        // parse the parameters
+        NSString* parameters = [NSString stringWithUTF8String:method->parameters];
+        NSArray* parts = [parameters ijsvg_componentsSeparatedByChars:","];
        NSString* alpha = @"100%";
        if (parts.count == 4) {
            alpha = parts[3];
        }
+        
+        IJSVGParsingStringMethodsRelease(methods, count);
+        methods = NULL;
        return [self colorFromRString:parts[0]
                              gString:parts[1]
                              bString:parts[2]
@@ -279,10 +304,10 @@ 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) {
            alpha = params[3];
@@ -290,21 +315,30 @@ CGFloat* IJSVGColorCSSHSLToHSB(CGFloat hue, CGFloat saturation, CGFloat lightnes

        // 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 (strcmp(str, "none") == 0 ||
+        strcmp(str, "transparent") == 0) {
+        (void)free(str), str = NULL;
+        return nil;
+    }
+    
+    // could return nil
+    (void)free(str), str = NULL;
+    return [self.class colorFromPredefinedColorName:string];
 }

 + (NSColor*)colorFromPredefinedColorName:(NSString*)name
@@ -707,14 +741,7 @@ 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
@@ -760,28 +787,38 @@ 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;
+    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) {
-        // 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];
+        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) {
        *containsAlphaComponent = [self HEXContainsAlphaComponent:hex];
    }
@@ -6,16 +6,19 @@
 //  Copyright © 2019 Curtis Hard. All rights reserved.
 //

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

@interface IJSVGColorList : NSObject <NSCopying> {

@private
    NSMutableDictionary<NSColor*, NSColor*>* _replacementColorTree;
-    NSMutableSet<NSColor*>* _colors;
+    NSMutableSet<IJSVGColorType*>* _colors;
 }

+@property (nonatomic, assign, readonly) NSUInteger count;
+
 - (NSColor*)proposedColorForColor:(NSColor*)color;
 - (void)removeAllReplacementColors;
 - (void)removeReplacementColor:(NSColor*)color;
@@ -25,7 +28,8 @@
         clearExistingColors:(BOOL)clearExistingColors;

 - (void)addColorsFromList:(IJSVGColorList*)sheet;
- (NSSet<NSColor*>*)colors;
- (void)addColor:(NSColor*)color;
+- (NSSet<IJSVGColorType*>*)colors;
+- (void)addColor:(IJSVGColorType*)color;
+- (NSDictionary<NSColor*, NSColor*>*)replacementColors;

@end
@@ -89,24 +89,48 @@
    }
 }

- (NSSet<NSColor*>*)colors
+- (NSSet<IJSVGColorType*>*)colors
 {
    return [NSSet setWithSet:_colors];
 }

 - (void)addColorsFromList:(IJSVGColorList*)sheet
 {
-    [_colors addObjectsFromArray:sheet.colors.allObjects];
+    for(IJSVGColorType* color in sheet.colors) {
+        [self addColor:color];
+    }
 }

- (void)addColor:(NSColor*)color
+- (void)addColor:(IJSVGColorType*)color
 {
-    [_colors addObject:[IJSVGColor computeColorSpace:color]];
+    // we just need to update its bit mask
+    if([_colors containsObject:color] == YES) {
+        void (^handler)(IJSVGColorType * _Nonnull obj, BOOL * _Nonnull stop) =
+        ^(IJSVGColorType * _Nonnull obj, BOOL * _Nonnull stop) {
+            if([obj isEqual:color] == YES) {
+                obj.flags |= color.flags;
+                *stop = YES;
+            }
+        };
+        [_colors enumerateObjectsUsingBlock:handler];
+        return;
+    }
+    [_colors addObject:color];
 }

- (void)removeColor:(NSColor*)color
+- (NSDictionary<NSColor*,NSColor*>*)replacementColors
 {
-    [_colors removeObject:[IJSVGColor computeColorSpace:color]];
+    return _replacementColorTree;
+}
+
+- (void)removeColor:(IJSVGColorType*)color
+{
+    [_colors removeObject:color];
+}
+
+- (NSUInteger)count
+{
+    return _colors.count;
 }

@end
@@ -0,0 +1,30 @@
+//
+//  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, IJSVGColorTypeFlags) {
+    IJSVGColorTypeNone = 0,
+    IJSVGColorTypeFlagUnknown = 1 << 0,
+    IJSVGColorTypeFlagFill = 1 << 1,
+    IJSVGColorTypeFlagStroke = 1 << 2,
+    IJSVGColorTypeFlagStop = 1 << 3
+};
+
+@interface IJSVGColorType : NSObject {
+    
+}
+
+@property (nonatomic, retain) NSColor* color;
+@property (nonatomic, assign) IJSVGColorTypeFlags flags;
+
+ (IJSVGColorType*)typeWithColor:(NSColor*)color
+                            flags:(IJSVGColorTypeFlags)mask;
+
+@end
@@ -0,0 +1,41 @@
+//
+//  IJSVGColorType.m
+//  IJSVG
+//
+//  Created by Curtis Hard on 20/04/2021.
+//  Copyright © 2021 Curtis Hard. All rights reserved.
+//
+
+#import "IJSVGColorType.h"
+
+@implementation IJSVGColorType
+
+- (void)dealloc
+{
+    (void)[_color release], _color = nil;
+    [super dealloc];
+}
+
+ (IJSVGColorType*)typeWithColor:(NSColor*)color
+                           flags:(IJSVGColorTypeFlags)mask
+{
+    IJSVGColorType* type = [[[self alloc] init] autorelease];
+    type.color = color;
+    type.flags = mask;
+    return type;
+}
+
+- (BOOL)isEqual:(id)object
+{
+    if([object isKindOfClass:IJSVGColorType.class] == NO) {
+        return NO;
+    }
+    return [self.color isEqual:((IJSVGColorType*)object).color];
+}
+
+- (NSUInteger)hash
+{
+    return self.color.hash;
+}
+
+@end
@@ -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;
@@ -17,20 +17,11 @@ 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;
@@ -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;
@@ -22,15 +22,6 @@

@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
 {
 }

@@ -101,36 +92,122 @@
    return nil;
 }

+ (CGMutablePathRef)newPathForCommandsArray:(NSArray<IJSVGCommand*>*)commands
+{
+    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;
+        }
+    }
+    return path;
+}
+
+ (NSArray<IJSVGCommand*>*)commandsForDataCharacters:(const char*)buffer
+{
+    IJSVGPathDataStream* stream = IJSVGPathDataStreamCreateDefault();
+    NSArray<IJSVGCommand*>* commands = [self commandsForDataCharacters:buffer
+                                                            dataStream:stream];
+    IJSVGPathDataStreamRelease(stream);
+    return commands;
+}
+
+ (NSArray<IJSVGCommand*>*)commandsForDataCharacters:(const char*)buffer
+                                          dataStream:(IJSVGPathDataStream*)dataStream
+{
+    NSMutableArray<IJSVGCommand*>* commands = [[[NSMutableArray alloc] init] autorelease];
+    NSUInteger len = strlen(buffer);
+    NSUInteger lastIndex = len - 1;
+
+    // make sure we plus 1 for the null byte
+    char* charBuffer = (char*)malloc(sizeof(char)*(len + 1));
+    NSInteger start = 0;
+    for (NSInteger i = 0; 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]];
+            IJSVGCommand* command = nil;
+            command = (IJSVGCommand*)[[[commandClass alloc] initWithCommandStringBuffer:commandString
+                                                                             dataStream:dataStream] autorelease];
+            
+            [commands addObject:command];
+            
+            // free the memory as at this point, we are done with it
+            (void)free(commandString), commandString = NULL;
+        }
+    }
+    (void)free(charBuffer), charBuffer = 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] autorelease];
+    for(IJSVGCommand* command in commands) {
+        IJSVGCommand* nCommand = [command commandByConvertingToUnits:unitType
+                                                         boundingBox:bounds];
+        [newCommands addObject:nCommand];
+    }
+    return newCommands;
+}
+
 - (void)dealloc
 {
-    (void)([commandString release]), commandString = nil;
-    (void)([subCommands release]), subCommands = nil;
-    if (parameters) {
-        (void)(free(parameters)), parameters = nil;
+    (void)([_subCommands release]), _subCommands = nil;
+    if (_parameters) {
+        (void)(free(_parameters)), _parameters = nil;
    }
    [super dealloc];
 }

- (id)initWithCommandString:(NSString*)str
-                 dataStream:(IJSVGPathDataStream*)dataStream
+- (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) {
            CGFloat* subParams = [self parametersFromIndexOffset:0];
            IJSVGCommand* command = [self subcommandWithParameters:subParams
                                                        paramCount:paramCount
                                                   previousCommand:nil];
-            subCommands = @[ command ].retain;
+            _subCommands = @[ command ].retain;
        } else {
            NSMutableArray<IJSVGCommand*>* subCommandArray = nil;
            subCommandArray = [[NSMutableArray alloc] initWithCapacity:sets].autorelease;
@@ -154,12 +231,43 @@
            }

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

+- (void)setSubCommands:(NSArray<IJSVGCommand*>*)subCommands
+{
+    (void)[_subCommands release], _subCommands = nil;
+    _subCommands = subCommands.retain;
+}
+
+- (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] autorelease];
+    for(IJSVGCommand* subcommand in self.subCommands) {
+        IJSVGCommand* subCopy = [[subcommand copy] autorelease];
+        subCopy.previousCommand = lastCommand;
+        subCopy.isSubCommand = lastCommand != nil;
+        [subcommands addObject:subCopy];
+    }
+    command.subCommands = subcommands;
+    return command;
+}
+
 - (CGFloat*)parametersFromIndexOffset:(NSInteger)index
 {
    CGFloat* subParams = 0;
@@ -188,15 +296,15 @@

 - (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 +319,34 @@
    _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] autorelease];
+    [str appendFormat:@"%c ",_command];
+    NSMutableArray* args = [[[NSMutableArray alloc] initWithCapacity:_parameterCount] autorelease];
+    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 autorelease];
+}
+
@end
@@ -20,9 +20,9 @@
              command:(IJSVGCommand*)currentCommand
      previousCommand:(IJSVGCommand*)command
                 type:(IJSVGCommandType)type
-                 path:(IJSVGPath*)path
+                 path:(CGMutablePathRef)path
 {
-    [path close];
+    CGPathCloseSubpath(path);
 }

@end
@@ -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])];
+        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
@@ -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;
-
+    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;
+    xAxisRotation = fmod(xAxisRotation, 2.f * M_PI);

    if (type == kIJSVGCommandTypeRelative) {
-        arcEndPoint.x += path.currentPoint.x;
-        arcEndPoint.y += path.currentPoint.y;
+        arcEndPoint.x += pathCurrentPoint.x;
+        arcEndPoint.y += pathCurrentPoint.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);
-
-    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)) {
+    
+    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
@@ -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)];
+        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
@@ -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])];
+        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
@@ -21,7 +21,7 @@
              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!
@@ -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
@@ -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])];
+        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
@@ -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);
+    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 = NSMakePoint(-1 * command.parameters[2] + 2 * path.currentPoint.x,
-                        -1 * command.parameters[3] + 2 * path.currentPoint.y);
+                    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);
+                    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])];
+        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
@@ -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);
+    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);
+                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) {
            // 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;
+//    path.lastControlPoint = commandPoint;
    if (type == kIJSVGCommandTypeAbsolute) {
-        [path.path addQuadCurveToPoint:NSMakePoint(params[0], params[1])
-                          controlPoint:commandPoint];
+        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
@@ -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])];
+        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
@@ -6,54 +6,50 @@
 //  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/IJSVGColorList.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/IJSVGRenderingStyle.h>
+#import <IJSVG/IJSVGTransaction.h>
 #import <Foundation/Foundation.h>

@class IJSVG;

+typedef NS_OPTIONS(NSInteger, IJSVGMatchPropertiesMask) {
+    IJSVGMatchPropertyNone = 0,
+    IJSVGMatchPropertyContainsMaskedElement = 1 << 0,
+    IJSVGMatchPropertyContainsStrokedElement = 1 << 1
+};
+
@protocol IJSVGDelegate <NSObject, IJSVGParserDelegate>

@optional
- (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;
+foundSubSVG:(IJSVG*)subSVG
+withSVGString:(NSString*)subSVGString;

@end

@interface IJSVG : NSObject <NSPasteboardWriting, IJSVGParserDelegate> {

@private
-    IJSVGParser* _group;
+    IJSVGRootNode* _rootNode;
    CGFloat _scale;
    CGFloat _clipScale;
    id<IJSVGDelegate> _delegate;
-    IJSVGLayer* _layerTree;
+    IJSVGLayerTree* _layerTree;
    CGRect _viewBox;
-    CGSize _proposedViewSize;
-    CGFloat _backingScaleFactor;
-    CGFloat _lastProposedBackingScale;
-    IJSVGRenderQuality _lastProposedRenderQuality;
    CGFloat _backingScale;
    NSMutableDictionary* _replacementColors;

    struct {
-        unsigned int shouldHandleForeignObject : 1;
-        unsigned int handleForeignObject : 1;
        unsigned int shouldHandleSubSVG : 1;
    } _respondsTo;
 }
@@ -68,7 +64,12 @@
 // fillColor, strokeColor, pattern and gradient fill
@property (nonatomic, assign) IJSVGRenderQuality renderQuality;
@property (nonatomic, assign) BOOL clipToViewport;
-@property (nonatomic, retain) IJSVGRenderingStyle* style;
+@property (nonatomic, retain) IJSVGRenderingStyle* renderingStyle;
+@property (nonatomic, readonly) IJSVGUnitSize * intrinsicSize;
+@property (nonatomic, copy) NSString* title;
+@property (nonatomic, copy) NSString* desc;
+@property (nonatomic, retain) IJSVGLayerTree* layerTree;
+@property (nonatomic, retain) IJSVGRootLayer* rootLayer;

 - (void)prepForDrawingInView:(NSView*)view;
 - (BOOL)isFont;
@@ -76,13 +77,10 @@
 - (NSRect)viewBox;
 - (NSArray<IJSVGPath*>*)glyphs;
 - (NSString*)identifier;
- (IJSVGLayer*)layer;
- (IJSVGLayer*)layerWithTree:(IJSVGLayerTree*)tree;
 - (NSArray<IJSVG*>*)subSVGs:(BOOL)recursive;
 - (NSString*)SVGStringWithOptions:(IJSVGExporterOptions)options;
-
- (CGFloat)computeBackingScale:(CGFloat)scale;
- (void)discardDOM;
+- (NSString*)SVGStringWithOptions:(IJSVGExporterOptions)options
+             floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions;

 + (id)svgNamed:(NSString*)string;
 + (id)svgNamed:(NSString*)string
@@ -101,6 +99,10 @@
 - (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;
@@ -117,11 +119,21 @@
 - (id)initWithFilePathURL:(NSURL*)aURL
                    error:(NSError**)error
                 delegate:(id<IJSVGDelegate>)delegate;
+
+- (id)initWithDataAssetNamed:(NSDataAssetName)name
+                       error:(NSError**)error;
+- (id)initWithDataAssetNamed:(NSDataAssetName)name
+                      bundle:(NSBundle*)bundle
+                       error:(NSError**)error;
+
 - (NSImage*)imageWithSize:(NSSize)aSize;
 - (NSImage*)imageWithSize:(NSSize)aSize
                    error:(NSError**)error;
 - (NSImage*)imageWithSize:(NSSize)aSize
                  flipped:(BOOL)flipped;
+- (NSImage*)imageWithSize:(NSSize)aSize
+                  flipped:(BOOL)flipped
+                    error:(NSError**)error;
 - (NSImage*)imageByMaintainingAspectRatioWithSize:(NSSize)aSize
                                          flipped:(BOOL)flipped
                                            error:(NSError**)error;
@@ -146,12 +158,13 @@
 - (NSData*)PDFDataWithRect:(NSRect)rect
                     error:(NSError**)error;

- (void)beginVectorDraw;
- (void)endVectorDraw;
-
 - (NSRect)computeOriginalDrawingFrameWithSize:(NSSize)aSize;
 - (void)setNeedsDisplay;

 // colors
- (IJSVGColorList*)computedColorList:(BOOL*)hasPatternFills;
+- (IJSVGColorList*)colorList;
+- (void)performBlock:(dispatch_block_t)block;
+
+// matching
+- (BOOL)matchesPropertiesWithMask:(IJSVGMatchPropertiesMask)mask;
@end
@@ -12,23 +12,29 @@

@implementation IJSVG

-@synthesize renderingBackingScaleHelper;
-@synthesize clipToViewport;
-@synthesize renderQuality;
-@synthesize style = _style;
+// these are explicitly implemented
+@synthesize title = _title;
+@synthesize desc = _desc;

 - (void)dealloc
 {
    // this can all be called on the background thread to be released
-    (void)([renderingBackingScaleHelper release]),
-        renderingBackingScaleHelper = nil;
+    BOOL hasTransaction = IJSVGBeginTransaction();
+    (void)([_renderingBackingScaleHelper release]), _renderingBackingScaleHelper = nil;
    (void)([_replacementColors release]), _replacementColors = nil;
-    (void)([_style release]), _style = nil;
-    (void)([_group release]), _group = nil;
+    (void)([_renderingStyle release]), _renderingStyle = nil;
+    (void)([_rootNode release]), _rootNode = nil;
+    (void)([_intrinsicSize release]), _intrinsicSize = nil;
+    (void)([_title release]), _title = nil;
+    (void)([_desc release]), _desc = nil;
+    (void)([_rootLayer release]), _rootLayer = nil;

    // kill any memory that has been around
    (void)([_layerTree release]), _layerTree = nil;
    [super dealloc];
+    if (hasTransaction == YES) {
+        IJSVGEndTransaction();
+    }
 }

 + (id)svgNamed:(NSString*)string
@@ -64,12 +70,35 @@
        ext = @"svg";
    }
    if ((str = [bundle pathForResource:[string stringByDeletingPathExtension]
-                                ofType:ext])
-        != nil) {
+                                ofType:ext]) != nil) {
        return [[[self alloc] initWithFile:str
                                     error:error
                                  delegate:delegate] autorelease];
    }
+    
+    // check the asset catalogues
+    return [[[self alloc] initWithDataAssetNamed:string
+                                           error:error] autorelease];
+}
+
+- (id)initWithDataAssetNamed:(NSDataAssetName)name
+                       error:(NSError**)error
+{
+    return [self initWithDataAssetNamed:name
+                                 bundle:NSBundle.mainBundle
+                                  error:error];
+}
+
+- (id)initWithDataAssetNamed:(NSDataAssetName)name
+                      bundle:(NSBundle*)bundle
+                       error:(NSError**)error
+{
+    NSDataAsset* dataAsset = [[[NSDataAsset alloc] initWithName:name
+                                                         bundle:bundle] autorelease];
+    if(dataAsset != nil) {
+        return [[self initWithSVGData:dataAsset.data
+                                error:error] autorelease];
+    }
    return nil;
 }

@@ -79,10 +108,17 @@
    __block IJSVGImageLayer* imageLayer = nil;

    // create the layers we require
+    IJSVGImage* imageNode = [[[IJSVGImage alloc] init] autorelease];
+    imageNode.image = image;
+    
+    BOOL hasTransaction = IJSVGBeginTransaction();
    layer = [[[IJSVGGroupLayer alloc] init] autorelease];
    imageLayer =
-        [[[IJSVGImageLayer alloc] initWithImage:image] autorelease];
+        [[[IJSVGImageLayer alloc] initWithImage:imageNode] autorelease];
    [layer addSublayer:imageLayer];
+    if (hasTransaction == YES) {
+        IJSVGEndTransaction();
+    }

    // return the initialized SVG
    return [self initWithSVGLayer:layer
@@ -95,7 +131,6 @@
    // this completely bypasses passing of files
    if ((self = [super init]) != nil) {
        // keep the layer tree
-        _layerTree = [group retain];
        _viewBox = viewBox;

        // any setups
@@ -115,7 +150,7 @@
             error:(NSError**)error
          delegate:(id<IJSVGDelegate>)delegate
 {
-    return [self initWithFilePathURL:[NSURL fileURLWithPath:file]
+    return [self initWithFilePathURL:[NSURL fileURLWithPath:file isDirectory:NO]
                               error:error
                            delegate:delegate];
 }
@@ -173,15 +208,15 @@
        [self _checkDelegate];

        // create the group
-        _group = [[IJSVGParser groupForFileURL:aURL
-                                         error:&anError
-                                      delegate:self] retain];
-
+        IJSVGParser* parser = [IJSVGParser groupForFileURL:aURL
+                                                      error:&anError
+                                                   delegate:self];
+        _rootNode = parser.rootNode.retain;
        [self _setupBasicInfoFromGroup];
        [self _setupBasicsFromAnyInitializer];

        // something went wrong...
-        if (_group == nil) {
+        if (_rootNode == nil) {
            if (error != NULL) {
                *error = anError;
            }
@@ -192,6 +227,21 @@
    return self;
 }

+- (id)initWithSVGData:(NSData*)data
+{
+    return [self initWithSVGData:data
+                           error:nil];
+}
+
+- (id)initWithSVGData:(NSData*)data
+                error:(NSError**)error
+{
+    NSString* svgString = [[NSString alloc] initWithData:data
+                                                encoding:NSUTF8StringEncoding];
+    return [self initWithSVGString:svgString.autorelease
+                             error:error];
+}
+
 - (id)initWithSVGString:(NSString*)string
 {
    return [self initWithSVGString:string
@@ -219,15 +269,16 @@
        [self _checkDelegate];

        // setup the parser
-        _group = [[IJSVGParser alloc] initWithSVGString:string
-                                                  error:&anError
-                                               delegate:self];
+        IJSVGParser* parser = [[[IJSVGParser alloc] initWithSVGString:string
+                                                                error:&anError
+                                                             delegate:self] autorelease];
+        _rootNode = parser.rootNode.retain;

        [self _setupBasicInfoFromGroup];
        [self _setupBasicsFromAnyInitializer];

        // something went wrong :(
-        if (_group == nil) {
+        if (_rootNode == nil) {
            if (error != NULL) {
                *error = anError;
            }
@@ -238,49 +289,61 @@
    return self;
 }

- (void)discardDOM
+- (void)performBlock:(dispatch_block_t)block
 {
-    // if we discard, we can no longer create a tree, so lets create tree
-    // upfront before we kill anything
-    [self layer];
-
-    // now clear memory
-    (void)([_group release]), _group = nil;
+    BOOL hasTransaction = IJSVGBeginTransaction();
+    block();
+    if (hasTransaction == YES) {
+        IJSVGEndTransaction();
+    }
 }

 - (void)_setupBasicInfoFromGroup
 {
-    // store the viewbox
-    _viewBox = _group.viewBox;
-    _proposedViewSize = _group.proposedViewSize;
+    _viewBox = [_rootNode.viewBox computeValue:CGSizeZero];
+    _intrinsicSize = _rootNode.intrinsicSize.retain;
 }

 - (void)_setupBasicsFromAnyInitializer
 {
-    self.style = [[[IJSVGRenderingStyle alloc] init] autorelease];
+    self.renderingStyle = [[[IJSVGRenderingStyle alloc] init] autorelease];
    self.clipToViewport = YES;
    self.renderQuality = kIJSVGRenderQualityFullResolution;

    // setup low level backing scale
-    _lastProposedBackingScale = 0.f;
    self.renderingBackingScaleHelper = ^CGFloat {
-        return 1.f;
+        return NSScreen.mainScreen.backingScaleFactor;
    };
 }

+- (void)setTitle:(NSString*)title
+{
+    _rootNode.title = title;
+}
+
+- (NSString*)title
+{
+    return _rootNode.title;
+}
+
+- (void)setDesc:(NSString*)description
+{
+    _rootNode.desc = description;
+}
+
+- (NSString*)desc
+{
+    return _rootNode.desc;
+}
+
 - (NSString*)identifier
 {
-    return _group.identifier;
+    return _rootNode.identifier;
 }

 - (void)_checkDelegate
 {
-    _respondsTo.shouldHandleForeignObject =
-        [_delegate respondsToSelector:@selector(svg:shouldHandleForeignObject:)];
-    _respondsTo.handleForeignObject = [_delegate
-        respondsToSelector:@selector(svg:handleForeignObject:document:)];
-    _respondsTo.shouldHandleSubSVG =
-        [_delegate respondsToSelector:@selector(svg:foundSubSVG:withSVGString:)];
+    _respondsTo.shouldHandleSubSVG = [_delegate respondsToSelector:@selector(svg:foundSubSVG:withSVGString:)];
 }

 - (NSRect)viewBox
@@ -290,30 +353,39 @@

 - (IJSVGGroup*)rootNode
 {
-    return _group;
+    return _rootNode;
 }

 - (BOOL)isFont
 {
-    return [_group isFont];
+    return [_rootNode isFont];
 }

 - (NSArray<IJSVGPath*>*)glyphs
 {
-    return [_group glyphs];
+    return [_rootNode glyphs];
 }

 - (NSArray<IJSVG*>*)subSVGs:(BOOL)recursive
 {
-    return [_group subSVGs:recursive];
+    return [_rootNode subSVGs:recursive];
 }

 - (NSString*)SVGStringWithOptions:(IJSVGExporterOptions)options
 {
-    IJSVGExporter* exporter =
-        [[[IJSVGExporter alloc] initWithSVG:self
-                                       size:self.viewBox.size
-                                    options:options] autorelease];
+    IJSVGExporter* exporter = [[[IJSVGExporter alloc] initWithSVG:self
+                                                             size:self.viewBox.size
+                                                          options:options] autorelease];
+    return [exporter SVGString];
+}
+
+- (NSString*)SVGStringWithOptions:(IJSVGExporterOptions)options
+             floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions
+{
+    IJSVGExporter* exporter = [[[IJSVGExporter alloc] initWithSVG:self
+                                                             size:self.viewBox.size
+                                                          options:options
+                                             floatingPointOptions:floatingPointOptions] autorelease];
    return [exporter SVGString];
 }

@@ -340,11 +412,19 @@
                         error:nil];
 }

+- (NSSize)computeSVGSizeWithRenderSize:(NSSize)size
+{
+    IJSVGUnitSize* svgSize = _intrinsicSize;
+    return NSMakeSize([svgSize.width computeValue:size.width],
+        [svgSize.height computeValue:size.height]);
+}
+
 - (NSRect)computeOriginalDrawingFrameWithSize:(NSSize)aSize
 {
-    [self _beginDraw:(NSRect){ .origin = CGPointZero, .size = aSize }];
-    return NSMakeRect(0.f, 0.f, _proposedViewSize.width * _clipScale,
-        _proposedViewSize.height * _clipScale);
+    NSSize propSize = [self computeSVGSizeWithRenderSize:aSize];
+    [self _beginDraw:(NSRect) { .origin = CGPointZero, .size = aSize }];
+    return NSMakeRect(0.f, 0.f, propSize.width * _clipScale,
+        propSize.height * _clipScale);
 }

 - (CGImageRef)newCGImageRefWithSize:(CGSize)size
@@ -353,7 +433,7 @@
 {
    // setup the drawing rect, this is used for both the intial drawing
    // and the backing scale helper block
-    NSRect rect = (CGRect){
+    NSRect rect = (CGRect) {
        .origin = CGPointZero,
        .size = (CGSize)size
    };
@@ -362,7 +442,7 @@
    [self _beginDraw:rect];

    // make sure we setup the scale based on the backing scale factor
-    CGFloat scale = [self backindScaleFactor:NULL];
+    CGFloat scale = [self backingScaleFactor];

    // create the context and colorspace
    CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
@@ -422,7 +502,7 @@
 - (NSData*)PDFData:(NSError**)error
 {
    return [self
-        PDFDataWithRect:(NSRect){ .origin = NSZeroPoint, .size = _viewBox.size }
+        PDFDataWithRect:(NSRect) { .origin = NSZeroPoint, .size = _viewBox.size }
                  error:error];
 }

@@ -452,10 +532,10 @@
    CGContextTranslateCTM(context, 0, -box.size.height);

    // make sure we set the masks to path bits n bobs
-    [self _beginVectorDraw];
+//    [self _beginVectorDraw];
    // draw the icon
    [self _drawInRect:(NSRect)box context:context error:error];
-    [self _endVectorDraw];
+//    [self _endVectorDraw];

    CGContextEndPage(context);

@@ -466,35 +546,39 @@
    return data;
 }

- (void)endVectorDraw
-{
-    [self _endVectorDraw];
-}
+//- (void)endVectorDraw
+//{
+//    [self _endVectorDraw];
+//}
+//
+//- (void)beginVectorDraw
+//{
+//    [self _beginVectorDraw];
+//}

- (void)beginVectorDraw
-{
-    [self _beginVectorDraw];
-}
-
- (void)_beginVectorDraw
-{
-    // turn on converts masks to PDF's
-    // as PDF context and layer masks dont work
-    void (^block)(CALayer* layer, BOOL isMask) = ^void(CALayer* layer, BOOL isMask) {
-        ((IJSVGLayer*)layer).convertMasksToPaths = YES;
-    };
-    [IJSVGLayer recursivelyWalkLayer:self.layer withBlock:block];
-}
-
- (void)_endVectorDraw
-{
-    // turn of convert masks to paths as not
-    // needed for generic rendering
-    void (^block)(CALayer* layer, BOOL isMask) = ^void(CALayer* layer, BOOL isMask) {
-        ((IJSVGLayer*)layer).convertMasksToPaths = NO;
-    };
-    [IJSVGLayer recursivelyWalkLayer:self.layer withBlock:block];
-}
+//- (void)_beginVectorDraw
+//{
+//    // turn on converts masks to PDF's
+//    // as PDF context and layer masks dont work
+//    void (^block)(CALayer* layer, BOOL isMask, BOOL* stop) =
+//    ^void(CALayer* layer, BOOL isMask, BOOL* stop) {
+//        ((IJSVGLayer*)layer).convertMasksToPaths = YES;
+//    };
+//    [IJSVGLayer recursivelyWalkLayer:self.layer
+//                           withBlock:block];
+//}
+//
+//- (void)_endVectorDraw
+//{
+//    // turn of convert masks to paths as not
+//    // needed for generic rendering
+//    void (^block)(CALayer* layer, BOOL isMask, BOOL* stop) =
+//    ^void(CALayer* layer, BOOL isMask, BOOL* stop) {
+//        ((IJSVGLayer*)layer).convertMasksToPaths = NO;
+//    };
+//    [IJSVGLayer recursivelyWalkLayer:self.layer
+//                           withBlock:block];
+//}

 - (void)prepForDrawingInView:(NSView*)view
 {
@@ -505,7 +589,7 @@
    }

    // construct the layer before drawing
-    [self layer];
+    [self rootLayer];

    // set the scale
    __block NSView* weakView = view;
@@ -540,31 +624,39 @@
 - (BOOL)drawInRect:(NSRect)rect
             error:(NSError**)error
 {
+    CGContextRef currentCGContext;
+    if (@available(macOS 10.10, *)) {
+        currentCGContext = NSGraphicsContext.currentContext.CGContext;
+    } else {
+        currentCGContext = NSGraphicsContext.currentContext.graphicsPort;
+    }
    return [self _drawInRect:rect
-                     context:[[NSGraphicsContext currentContext] CGContext]
+                     context:currentCGContext
                       error:error];
 }

- (CGFloat)computeBackingScale:(CGFloat)actualScale
-{
-    _backingScale = actualScale;
-    return (CGFloat)(_scale + actualScale);
-}
-
 - (NSRect)computeRectDrawingInRect:(NSRect)rect
                           isValid:(BOOL*)valid
 {
    // we also need to calculate the viewport so we can clip
    // the drawing if needed
    NSRect viewPort = NSZeroRect;
-    viewPort.origin.x = round((rect.size.width / 2 - (_proposedViewSize.width / 2) * _clipScale) + rect.origin.x);
+    NSSize propSize = [self computeSVGSizeWithRenderSize:rect.size];
+    viewPort.origin.x = round((rect.size.width / 2 - (propSize.width / 2) * _clipScale) + rect.origin.x);
    viewPort.origin.y = round(
-        (rect.size.height / 2 - (_proposedViewSize.height / 2) * _clipScale) + rect.origin.y);
-    viewPort.size.width = _proposedViewSize.width * _clipScale;
-    viewPort.size.height = _proposedViewSize.height * _clipScale;
+        (rect.size.height / 2 - (propSize.height / 2) * _clipScale) + rect.origin.y);
+    viewPort.size.width = propSize.width * _clipScale;
+    viewPort.size.height = propSize.height * _clipScale;

    // check the viewport
-    if (NSEqualRects(_viewBox, NSZeroRect) || _viewBox.size.width <= 0 || _viewBox.size.height <= 0 || NSEqualRects(NSZeroRect, viewPort) || CGRectIsEmpty(viewPort) || CGRectIsNull(viewPort) || viewPort.size.width <= 0 || viewPort.size.height <= 0) {
+    if (NSEqualRects(_viewBox, NSZeroRect) ||
+        _viewBox.size.width <= 0 ||
+        _viewBox.size.height <= 0 ||
+        NSEqualRects(NSZeroRect, viewPort) ||
+        CGRectIsEmpty(viewPort) ||
+        CGRectIsNull(viewPort) ||
+        viewPort.size.width <= 0 ||
+        viewPort.size.height <= 0) {
        *valid = NO;
        return NSZeroRect;
    }
@@ -579,147 +671,126 @@
    [self _drawInRect:rect context:context error:nil];
 }

+//- (BOOL)_drawInRect:(NSRect)rect
+//            context:(CGContextRef)ref
+//              error:(NSError**)error
+//{
+//    // prep for draw...
+//    CGContextSaveGState(ref);
+//    @try {
+//        [self _beginDraw:rect];
+//
+//        // we also need to calculate the viewport so we can clip
+//        // the drawing if needed
+//        BOOL canDraw = NO;
+//        NSRect viewPort = [self computeRectDrawingInRect:rect isValid:&canDraw];
+//        // check the viewport
+//        if (canDraw == NO) {
+//            if (error != NULL) {
+//                *error = [[[NSError alloc] initWithDomain:IJSVGErrorDomain
+//                                                     code:IJSVGErrorDrawing
+//                                                 userInfo:nil] autorelease];
+//            }
+//        } else {
+//            // clip to mask
+//            if (self.clipToViewport == YES) {
+//                CGContextClipToRect(ref, viewPort);
+//            }
+//
+//            // add the origin back onto the viewport
+//            viewPort.origin.x -= (_viewBox.origin.x) * _scale;
+//            viewPort.origin.y -= (_viewBox.origin.y) * _scale;
+//
+//            // transforms
+//            CGContextTranslateCTM(ref, viewPort.origin.x, viewPort.origin.y);
+//            CGContextScaleCTM(ref, _scale, _scale);
+//
+//            // do we need to update the backing scales on the
+//            // layers?
+//            [self backingScaleFactor:nil];
+//
+//            CGInterpolationQuality quality;
+//            switch (self.renderQuality) {
+//            case kIJSVGRenderQualityLow: {
+//                quality = kCGInterpolationLow;
+//                break;
+//            }
+//            case kIJSVGRenderQualityOptimized: {
+//                quality = kCGInterpolationMedium;
+//                break;
+//            }
+//            default: {
+//                quality = kCGInterpolationHigh;
+//            }
+//            }
+//            CGContextSetInterpolationQuality(ref, quality);
+//            BOOL hasTransaction = IJSVGBeginTransaction();
+//            [self.layer renderInContext:ref];
+//            if (hasTransaction == YES) {
+//                IJSVGEndTransaction();
+//            }
+//        }
+//    } @catch (NSException* exception) {
+//        // just catch and give back a drawing error to the caller
+//        if (error != NULL) {
+//            *error = [[[NSError alloc] initWithDomain:IJSVGErrorDomain
+//                                                 code:IJSVGErrorDrawing
+//                                             userInfo:nil] autorelease];
+//        }
+//    }
+//    CGContextRestoreGState(ref);
+//    return (error == nil);
+//}
+
 - (BOOL)_drawInRect:(NSRect)rect
            context:(CGContextRef)ref
              error:(NSError**)error
 {
-    // prep for draw...
+    BOOL transaction = IJSVGBeginTransaction();
    CGContextSaveGState(ref);
-    @try {
-        [self _beginDraw:rect];
-
-        // we also need to calculate the viewport so we can clip
-        // the drawing if needed
-        BOOL canDraw = NO;
-        NSRect viewPort = [self computeRectDrawingInRect:rect isValid:&canDraw];
-        // check the viewport
-        if (canDraw == NO) {
-            if (error != NULL) {
-                *error = [[[NSError alloc] initWithDomain:IJSVGErrorDomain
-                                                     code:IJSVGErrorDrawing
-                                                 userInfo:nil] autorelease];
-            }
-        } else {
-            // clip to mask
-            if (self.clipToViewport == YES) {
-                CGContextClipToRect(ref, viewPort);
-            }
-
-            // add the origin back onto the viewport
-            viewPort.origin.x -= (_viewBox.origin.x) * _scale;
-            viewPort.origin.y -= (_viewBox.origin.y) * _scale;
-
-            // transforms
-            CGContextTranslateCTM(ref, viewPort.origin.x, viewPort.origin.y);
-            CGContextScaleCTM(ref, _scale, _scale);
-
-            // do we need to update the backing scales on the
-            // layers?
-            if (self.renderingBackingScaleHelper != nil) {
-                [self backindScaleFactor:nil];
-            }
-
-            CGInterpolationQuality quality;
-            switch (self.renderQuality) {
-            case kIJSVGRenderQualityLow: {
-                quality = kCGInterpolationLow;
-                break;
-            }
-            case kIJSVGRenderQualityOptimized: {
-                quality = kCGInterpolationMedium;
-                break;
-            }
-            default: {
-                quality = kCGInterpolationHigh;
-            }
-            }
-            CGContextSetInterpolationQuality(ref, quality);
-            [self.layer renderInContext:ref];
-        }
-    } @catch (NSException* exception) {
-        // just catch and give back a drawing error to the caller
-        if (error != NULL) {
-            *error = [[[NSError alloc] initWithDomain:IJSVGErrorDomain
-                                                 code:IJSVGErrorDrawing
-                                             userInfo:nil] autorelease];
-        }
-    }
+    // make sure we setup a transaction
+    CGFloat backingScale = [self backingScaleFactor];
+    [self.rootLayer renderInContext:ref
+                           viewPort:rect
+                       backingScale:backingScale
+                            quality:_renderQuality];    
    CGContextRestoreGState(ref);
-    return (error == nil);
+    if(transaction) {
+        IJSVGEndTransaction();
+    }
+    return YES;
 }

- (CGFloat)backindScaleFactor:(CGFloat* _Nullable)proposedBackingScale
+- (IJSVGLayerTree*)layerTree
+{
+    if(_layerTree == nil) {
+        _layerTree = [[IJSVGLayerTree alloc] init];
+    }
+    return _layerTree;
+}
+
+- (IJSVGRootLayer*)rootLayer
+{
+    if(_rootLayer == nil) {
+        _rootLayer = [self.layerTree rootLayerForRootNode:_rootNode].retain;
+    }
+    return _rootLayer;
+}
+
+- (CGFloat)backingScaleFactor
 {
    __block CGFloat scale = 1.f;
    scale = (self.renderingBackingScaleHelper)();
    if (scale < 1.f) {
        scale = 1.f;
    }
-    _backingScaleFactor = scale;
-
-    // make sure we multiple the scale by the scale of the rendered clip
-    // or it will be blurry for gradients and other bitmap drawing
-    scale = (_scale * scale);
-
-    // dont do anything, nothing has changed, no point of iterating over
-    // every layer for no reason!
-    if (scale == _lastProposedBackingScale && renderQuality == _lastProposedRenderQuality) {
-        return _backingScaleFactor;
-    }
-
-    IJSVGRenderQuality quality = self.renderQuality;
-    _lastProposedBackingScale = scale;
-    _lastProposedRenderQuality = quality;
-    if (proposedBackingScale != nil && proposedBackingScale != NULL) {
-        *proposedBackingScale = scale;
-    }
-
-    // walk the tree
-    void (^block)(CALayer* layer, BOOL isMask) = ^void(CALayer* layer, BOOL isMask) {
-        IJSVGLayer* propLayer = ((IJSVGLayer*)layer);
-        propLayer.renderQuality = quality;
-        if (propLayer.requiresBackingScaleHelp == YES) {
-            propLayer.backingScaleFactor = scale;
-        }
-    };
-
-    // gogogo
-    [IJSVGLayer recursivelyWalkLayer:self.layer withBlock:block];
-    return _backingScaleFactor;
+    return _backingScale = scale;
 }

- (IJSVGLayer*)layerWithTree:(IJSVGLayerTree*)tree
+- (void)setRenderingStyle:(IJSVGRenderingStyle*)style
 {
-    // clear memory
-    if (_layerTree != nil) {
-        (void)([_layerTree release]), _layerTree = nil;
-    }
-
-    // force rebuild of the tree
-    _layerTree = [[tree layerForNode:_group] retain];
-    return _layerTree;
-}
-
- (IJSVGLayer*)layer
-{
-    if (_layerTree != nil) {
-        return _layerTree;
-    }
-
-    // create the renderer and assign default values
-    // from this SVG object
-    IJSVGLayerTree* renderer = [[[IJSVGLayerTree alloc] init] autorelease];
-    renderer.viewBox = self.viewBox;
-    renderer.style = self.style;
-
-    // return the rendered layer
-    return [self layerWithTree:renderer];
-}
-
- (void)setStyle:(IJSVGRenderingStyle*)style
-{
-    (void)([_style release]), _style = nil;
-    _style = style.retain;
+    (void)([_renderingStyle release]), _renderingStyle = nil;
+    _renderingStyle = style.retain;
 }

 - (void)observeValueForKeyPath:(NSString*)keyPath
@@ -728,7 +799,7 @@
                       context:(void*)context
 {
    // invalidate the tree if a style is set
-    if (object == _style) {
+    if (object == _renderingStyle) {
        [self invalidateLayerTree];
    }
 }
@@ -743,53 +814,72 @@
    (void)([_layerTree release]), _layerTree = nil;
 }

- (IJSVGColorList*)computedColorList:(BOOL*)hasPatternFills
+- (IJSVGColorList*)colorList
 {
    IJSVGColorList* sheet = [[[IJSVGColorList alloc] init] autorelease];
-    void (^block)(CALayer* layer, BOOL isMask) = ^void(CALayer* layer,
-        BOOL isMask) {
-        if ([layer isKindOfClass:[IJSVGShapeLayer class]] && isMask == NO && layer.isHidden == NO) {
-            IJSVGShapeLayer* sLayer = (IJSVGShapeLayer*)layer;
-            NSColor* color = nil;
-            if (sLayer.fillColor != nil) {
-                color = [NSColor colorWithCGColor:sLayer.fillColor];
-                if (color.alphaComponent != 0.f) {
-                    [sheet addColor:color];
-                }
-            }
-            if (sLayer.strokeColor != nil) {
-                color = [NSColor colorWithCGColor:sLayer.strokeColor];
-                color = [IJSVGColor computeColorSpace:color];
-                if (color.alphaComponent != 0.f) {
-                    [sheet addColor:color];
-                }
-            }
+    void (^block)(CALayer* layer, BOOL* stop) =
+    ^void(CALayer* layer, BOOL* stop) {
+        
+        // dont do anything
+        if(([layer isKindOfClass:IJSVGShapeLayer.class] &&
+            layer.isHidden == NO) == NO) {
+            return;
+        }
+        
+          
+        // compute
+        IJSVGShapeLayer* sLayer = (IJSVGShapeLayer*)layer;
+        NSColor* color = nil;

-            // check for any patterns
-            if (sLayer.patternFillLayer != nil || sLayer.gradientFillLayer != nil || sLayer.gradientStrokeLayer != nil || sLayer.patternStrokeLayer != nil) {
-                if (hasPatternFills != nil && *hasPatternFills != YES) {
-                    *hasPatternFills = YES;
-                }
+        // fill color
+        if (sLayer.fillColor != nil) {
+            color = [NSColor colorWithCGColor:sLayer.fillColor];
+            color = [IJSVGColor computeColorSpace:color];
+            if (color.alphaComponent != 0.f) {
+                IJSVGColorType* type = nil;
+                type = [IJSVGColorType typeWithColor:color
+                                               flags:IJSVGColorTypeFlagFill];
+                [sheet addColor:type];
+            }
+        }

-                // add any colors from gradients
-                IJSVGGradientLayer* gradLayer = nil;
-                IJSVGGradientLayer* gradStrokeLayer = nil;
-                if ((gradLayer = sLayer.gradientFillLayer) != nil) {
-                    IJSVGColorList* gradSheet = gradLayer.gradient.computedColorList;
-                    [sheet addColorsFromList:gradSheet];
-                }
-                if ((gradStrokeLayer = sLayer.gradientStrokeLayer) != nil) {
-                    IJSVGColorList* gradSheet = gradStrokeLayer.gradient.computedColorList;
-                    [sheet addColorsFromList:gradSheet];
-                }
+        // stroke color
+        if (sLayer.strokeColor != nil) {
+            color = [NSColor colorWithCGColor:sLayer.strokeColor];
+            color = [IJSVGColor computeColorSpace:color];
+            if (color.alphaComponent != 0.f) {
+                IJSVGColorType* type = nil;
+                type = [IJSVGColorType typeWithColor:color
+                                               flags:IJSVGColorTypeFlagStroke];
+                [sheet addColor:type];
+            }
+        }
+
+        // check for any patterns or strokes
+        if (sLayer.patternFillLayer != nil || sLayer.gradientFillLayer != nil ||
+           sLayer.gradientStrokeLayer != nil || sLayer.patternStrokeLayer != nil) {
+            
+           // add any colors from gradients
+            IJSVGGradientLayer* gradLayer = nil;
+            IJSVGGradientLayer* gradStrokeLayer = nil;
+            
+            // gradient fill
+            if ((gradLayer = sLayer.gradientFillLayer) != nil) {
+                IJSVGColorList* gradSheet = gradLayer.gradient.colorList;
+                [sheet addColorsFromList:gradSheet];
+            }
+            
+            // gradient stroke layers
+            if ((gradStrokeLayer = sLayer.gradientStrokeLayer) != nil) {
+                IJSVGColorList* gradSheet = gradStrokeLayer.gradient.colorList;
+                [sheet addColorsFromList:gradSheet];
            }
        }
    };
-
-    // walk
-    [IJSVGLayer recursivelyWalkLayer:self.layer withBlock:block];
-
-    // return the colours!
+    
+    // gogogo!
+    [IJSVGLayer recursivelyWalkLayer:self.rootLayer
+                           withBlock:block];
    return sheet;
 }

@@ -800,12 +890,13 @@
    // to transform the paths into our viewbox
    NSSize dest = rect.size;
    NSSize source = _viewBox.size;
-    _clipScale = MIN(dest.width / _proposedViewSize.width,
-        dest.height / _proposedViewSize.height);
+    NSSize propSize = [self computeSVGSizeWithRenderSize:rect.size];
+    _clipScale = MIN(dest.width / propSize.width,
+        dest.height / propSize.height);

    // work out the actual scale based on the clip scale
-    CGFloat w = _proposedViewSize.width * _clipScale;
-    CGFloat h = _proposedViewSize.height * _clipScale;
+    CGFloat w = propSize.width * _clipScale;
+    CGFloat h = propSize.height * _clipScale;
    _scale = MIN(w / source.width, h / source.height);
 }

@@ -837,25 +928,43 @@
    }
 }

- (BOOL)svgParser:(IJSVGParser*)parser
-    shouldHandleForeignObject:(IJSVGForeignObject*)foreignObject
-{
-    if (_delegate != nil && _respondsTo.shouldHandleForeignObject == 1) {
-        return [_delegate svg:self
-            shouldHandleForeignObject:foreignObject];
-    }
-    return NO;
-}
+#pragma mark matching

- (void)svgParser:(IJSVGParser*)parser
-    handleForeignObject:(IJSVGForeignObject*)foreignObject
-               document:(NSXMLDocument*)document
+- (BOOL)matchesPropertiesWithMask:(IJSVGMatchPropertiesMask)mask
 {
-    if (_delegate != nil && _respondsTo.handleForeignObject == 1) {
-        [_delegate svg:self
-            handleForeignObject:foreignObject
-                       document:document];
-    }
+    __block IJSVGMatchPropertiesMask matchedMask = IJSVGMatchPropertyNone;
+    IJSVGNodeWalkHandler handler = ^(IJSVGNode* node, BOOL* allowChildNodes,
+                                     BOOL* stop) {
+        // dont compute nodes that are not designed
+        // to be rendered
+        if(node.shouldRender == NO) {
+            *allowChildNodes = NO;
+            return;
+        }
+        
+        // check for stroke
+        IJSVGPath* path = (IJSVGPath*)node;
+        if((mask & IJSVGMatchPropertyContainsStrokedElement) != 0 &&
+           [node isKindOfClass:IJSVGPath.class] == YES &&
+           [path matchesTraits:IJSVGNodeTraitStroked] == YES) {
+            matchedMask |= IJSVGMatchPropertyContainsStrokedElement;
+        }
+        
+        // check for mask
+        if((mask & IJSVGMatchPropertyContainsMaskedElement) != 0 &&
+           node.mask != nil) {
+            matchedMask |= IJSVGMatchPropertyContainsMaskedElement;
+        }
+        
+        // simply check if masks equal, if they are, stop this loop
+        // and return the evaluation
+        if(matchedMask == mask) {
+            *stop = YES;
+        }
+    };
+    [IJSVGNode walkNodeTree:_rootNode
+                    handler:handler];
+    return matchedMask == mask;
 }

@end
@@ -6,7 +6,7 @@
 //  Copyright (c) 2015 Curtis Hard. All rights reserved.
 //

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

 typedef void (^IJSVGFontConverterEnumerateBlock)(NSString* unicode, IJSVG* svg);
@@ -6,7 +6,6 @@
 //  Copyright (c) 2015 Curtis Hard. All rights reserved.
 //

-#import "IJSVGBezierPathAdditions.h"
 #import "IJSVGFontConverter.h"
 #import "IJSVGShapeLayer.h"

@@ -104,16 +103,15 @@

 + (IJSVG*)convertIJSVGPathToSVG:(IJSVGPath*)path
 {
-    CGPathRef cgPath = [path.path newCGPathRef:NO];
-    CGPathRef flippedPath = [IJSVGUtils newFlippedCGPath:cgPath];
+    CGPathRef flippedPath = [IJSVGUtils newFlippedCGPath:path.path];
    IJSVG* svg = [self convertPathToSVG:flippedPath];
    CGPathRelease(flippedPath);
-    CGPathRelease(cgPath);
    return svg;
 }

 + (IJSVG*)convertPathToSVG:(CGPathRef)path
 {
+    IJSVGBeginTransaction();
    __block IJSVG* svg = nil;
    IJSVGGroupLayer* layer = [[[IJSVGGroupLayer alloc] init] autorelease];
    IJSVGShapeLayer* shape = [[[IJSVGShapeLayer alloc] init] autorelease];
@@ -122,6 +120,7 @@
    CGRect box = CGPathGetPathBoundingBox(path);
    svg = [[IJSVG alloc] initWithSVGLayer:layer
                                  viewBox:box];
+    IJSVGEndTransaction();
    return [svg autorelease];
 }

@@ -17,6 +17,9 @@
    IJSVG* _svg;
 }

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

@end
@@ -11,8 +11,6 @@

@implementation IJSVGImageRep

-@synthesize viewBox = _viewBox;
-
 + (void)load
 {
    [NSBitmapImageRep registerImageRepClass:self];
@@ -25,12 +23,20 @@

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

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

 + (NSArray<NSImageRep*>*)imageRepsWithData:(NSData*)data
@@ -101,4 +107,9 @@
    return _svg.viewBox;
 }

+- (IJSVG*)SVG
+{
+    return _svg;
+}
+
@end
@@ -6,7 +6,7 @@
 //  Copyright © 2017 Curtis Hard. All rights reserved.
 //

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

 IB_DESIGNABLE
@@ -42,7 +42,7 @@
    if (imageName != nil) {
        IJSVG* anSVG = [IJSVG svgNamed:imageName];
        if (tintColor != nil) {
-            anSVG.style.fillColor = tintColor;
+            anSVG.renderingStyle.fillColor = tintColor;
        }
        self.SVG = anSVG;
    }
@@ -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/IJSVGColorType.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);
@@ -33,12 +40,43 @@ typedef NS_OPTIONS(NSInteger, IJSVGExporterOptions) {
    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,
+    IJSVGExporterOptionAll = IJSVGExporterOptionRemoveUselessDef | IJSVGExporterOptionRemoveUselessGroups |
+        IJSVGExporterOptionCreateUseForPaths | IJSVGExporterOptionMoveAttributesToGroup |
+        IJSVGExporterOptionSortAttributes | IJSVGExporterOptionCollapseGroups |
+        IJSVGExporterOptionCleanupPaths | IJSVGExporterOptionRemoveHiddenElements |
+        IJSVGExporterOptionScaleToSizeIfNecessary | IJSVGExporterOptionCompressOutput |
+        IJSVGExporterOptionCollapseGradients | IJSVGExporterOptionRemoveWidthHeightAttributes |
+        IJSVGExporterOptionColorAllowRRGGBBAA | IJSVGExporterOptionRemoveComments |
+        IJSVGExporterOptionCenterWithinViewBox | IJSVGExporterOptionRemoveXMLDeclaration |
+        IJSVGExporterOptionConvertArcs | IJSVGExporterOptionConvertShapesToPaths |
+        IJSVGExporterOptionRoundTransforms | IJSVGExporterOptionRemoveDefaultValues
 };

 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:(IJSVGColorTypeFlags)flag
+                           options:(IJSVGColorStringOptions)options;
+
+
+@end

@interface IJSVGExporter : NSObject {

@@ -50,15 +88,31 @@ const NSArray* IJSVGShortCharacterArray(void);
    NSXMLElement* _defElement;
    NSInteger _idCount;
    NSInteger _shortIdCount;
+    BOOL _appliedXLink;
+    
+    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
@@ -15,30 +15,53 @@ typedef struct {
    NSArray<NSString*>* params;
 } IJSVGExporterPathInstructionCommand;

+typedef struct {
+    CGPoint center;
+    CGFloat radius;
+} IJSVGExporterPathInstructionCircle;
+
@interface IJSVGExporterPathInstruction : NSObject {

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

+@property (nonatomic, assign) char instruction;
+
+void IJSVGExporterPathInstructionRoundData(CGFloat* data, NSInteger length, IJSVGFloatingPointOptions options);
+CGFloat IJSVGExporterPathFloatToFixed(CGFloat number, int precision);
 IJSVGExporterPathInstructionCommand* IJSVGExporterPathInstructionCommandCopy(IJSVGExporterPathInstructionCommand command);
 void IJSVGExporterPathInstructionCommandFree(IJSVGExporterPathInstructionCommand* _Nullable command);

-+ (NSArray<IJSVGExporterPathInstruction*>*)instructionsFromPath:(CGPathRef)path;
+ (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)
@@ -9,13 +9,22 @@
 #import "IJSVGExporter.h"
 #import "IJSVGExporterPathInstruction.h"
 #import "IJSVGUtils.h"
+#import <math.h>

@implementation IJSVGExporterPathInstruction

+@synthesize instruction = _instruction;
+
 - (void)dealloc
 {
    if (_data != NULL) {
-        free(_data);
+        (void)free(_data), _data = NULL;
+    }
+    if (_base != NULL) {
+        (void)free(_base), _base = NULL;
+    }
+    if (_coords != NULL) {
+        (void)free(_coords), _coords = NULL;
    }
    [super dealloc];
 }
@@ -28,8 +37,13 @@

        // only allocate if not zero
        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;
 }
@@ -39,21 +53,21 @@
    return _dataCount;
 }

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

+- (CGFloat*)base
+{
+    return _base;
+}
+
+- (CGFloat*)coords
+{
+    return _coords;
+}
+
 IJSVGExporterPathInstructionCommand* IJSVGExporterPathInstructionCommandCopy(IJSVGExporterPathInstructionCommand command)
 {
    IJSVGExporterPathInstructionCommand* copy = NULL;
@@ -71,10 +85,10 @@ void IJSVGExporterPathInstructionCommandFree(IJSVGExporterPathInstructionCommand
 }

 + (NSString*)pathStringWithInstructionSet:(NSArray<NSValue*>*)instructionSets
+                     floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions
 {
    IJSVGExporterPathInstructionCommand* lastCommand = NULL;
    NSMutableString* string = [[[NSMutableString alloc] init] autorelease];
-    char* lastCommandChars = NULL;
    for (NSValue* value in instructionSets) {
        // read back the bytes
        IJSVGExporterPathInstructionCommand command;
@@ -89,31 +103,9 @@ void IJSVGExporterPathInstructionCommandFree(IJSVGExporterPathInstructionCommand
            [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);
@@ -125,6 +117,7 @@ void IJSVGExporterPathInstructionCommandFree(IJSVGExporterPathInstructionCommand
 }

 + (NSString*)pathStringFromInstructions:(NSArray<IJSVGExporterPathInstruction*>*)instructions
+                   floatingPointOptions:(IJSVGFloatingPointOptions)floatingPointOptions
 {
    NSMutableArray* pathInstructions = [[[NSMutableArray alloc] init] autorelease];
    for (IJSVGExporterPathInstruction* instruction in instructions) {
@@ -132,11 +125,12 @@ void IJSVGExporterPathInstructionCommandFree(IJSVGExporterPathInstructionCommand
        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 +138,43 @@ 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;
        }
@@ -187,13 +195,201 @@ void IJSVGExporterPathInstructionCommandFree(IJSVGExporterPathInstructionCommand
                                        objCType:@encode(IJSVGExporterPathInstructionCommand)];
        [pathInstructions addObject:value];
    }
-    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] autorelease];
+        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] autorelease];
+    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] autorelease];
+                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] autorelease];
+                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] autorelease];
+                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] autorelease];
+                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] autorelease];
+                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 };
+    IJSVGExporterPathInstruction* baseInstruction = nil;
+    IJSVGExporterPathInstruction* prevInstruction = nil;

    NSInteger index = 0;
    for (IJSVGExporterPathInstruction* anInstruction in instructions) {
@@ -212,6 +408,8 @@ void IJSVGExporterPathInstructionCommandFree(IJSVGExporterPathInstructionCommand
                if (instruction == 'm') {
                    subpathPoint[0] = point[0];
                    subpathPoint[1] = point[1];
+
+                    baseInstruction = anInstruction;
                }

            } else if (instruction == 'h') {
@@ -232,8 +430,8 @@ void IJSVGExporterPathInstructionCommandFree(IJSVGExporterPathInstructionCommand
                subpathPoint[0] = point[0] += data[0];
                subpathPoint[1] = point[1] += data[1];

+                baseInstruction = anInstruction;
            } else if (instruction == 'L' || instruction == 'T') {
-
                instruction = tolower(instruction);

                data[0] -= point[0];
@@ -241,9 +439,7 @@ void IJSVGExporterPathInstructionCommandFree(IJSVGExporterPathInstructionCommand

                point[0] += data[0];
                point[1] += data[1];
-
            } else if (instruction == 'C') {
-
                instruction = 'c';

                data[0] -= point[0];
@@ -255,9 +451,7 @@ void IJSVGExporterPathInstructionCommandFree(IJSVGExporterPathInstructionCommand

                point[0] += data[4];
                point[1] += data[5];
-
            } else if (instruction == 'S' || instruction == 'Q') {
-
                instruction = tolower(instruction);

                data[0] -= point[0];
@@ -267,9 +461,7 @@ void IJSVGExporterPathInstructionCommandFree(IJSVGExporterPathInstructionCommand

                point[0] += data[2];
                point[1] += data[3];
-
            } else if (instruction == 'A') {
-
                instruction = 'a';

                data[5] -= point[0];
@@ -277,38 +469,51 @@ void IJSVGExporterPathInstructionCommandFree(IJSVGExporterPathInstructionCommand

                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];
            }

            // reset the instruction
-            [anInstruction setInstruction:instruction];
+            anInstruction.instruction = instruction;
+            CGFloat* coords = anInstruction.coords;
+            coords[0] = point[0];
+            coords[1] = point[1];

        } else if (instruction == 'Z' || instruction == 'z') {
+            if (baseInstruction != nil) {
+                CGFloat* coords = anInstruction.coords;
+                coords[0] = baseInstruction.coords[0];
+                coords[1] = baseInstruction.coords[1];
+            }
            point[0] = subpathPoint[0];
            point[1] = subpathPoint[1];
        }

+        CGFloat* base = anInstruction.base;
+        if (prevInstruction != nil) {
+            base[0] = prevInstruction.coords[0];
+            base[1] = prevInstruction.coords[1];
+        } else {
+            base[0] = 0.f;
+            base[1] = 0.f;
+        }
+
        // increment index
+        prevInstruction = anInstruction;
        index++;
    }
 }

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

    // keep track of the current point
@@ -378,6 +583,7 @@ 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];
@@ -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, assign) CGRect viewBox;
@property (nonatomic, retain) IJSVGGradient* gradient;
-@property (nonatomic, assign) CGAffineTransform absoluteTransform;
-@property (nonatomic, assign) CGRect objectRect;
+@property (nonatomic, assign) CGRect viewBox;

@end

@@ -7,42 +7,34 @@
 //

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

@implementation IJSVGGradientLayer

-@synthesize viewBox;
-@synthesize gradient;
-@synthesize absoluteTransform;
-@synthesize objectRect;
-
 - (void)dealloc
 {
-    (void)([gradient release]), gradient = nil;
+    (void)([_gradient release]), _gradient = nil;
    [super dealloc];
 }

- (id)init
+- (BOOL)requiresBackingScaleHelp
 {
-    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;
+    if (_gradient != nil) {
+        (void)([_gradient release]), _gradient = nil;
    }
-    gradient = [newGradient retain];
+    _gradient = [newGradient retain];

    // lets check its alpha properties on the colors
    BOOL hasAlphaChannel = NO;
-    NSInteger stops = gradient.gradient.numberOfColorStops;
+    NSInteger stops = _gradient.gradient.numberOfColorStops;
    for (NSInteger i = 0; i < stops; i++) {
        NSColor* color = nil;
-        [gradient.gradient getColor:&color
+        [_gradient.gradient getColor:&color
                           location:NULL
                            atIndex:i];
        if (color.alphaComponent != 1.f) {
@@ -79,6 +71,11 @@
    [super setBackingScaleFactor:backingScaleFactor];
 }

+- (CALayer<IJSVGDrawableLayer> *)referencingLayer
+{
+    return [super referencingLayer] ?: self.superlayer;
+}
+
 - (void)drawInContext:(CGContextRef)ctx
 {
    [super drawInContext:ctx];
@@ -89,14 +86,22 @@
    }

    // draw the gradient
-    CGAffineTransform trans = CGAffineTransformMakeTranslation(-CGRectGetMinX(objectRect),
-        -CGRectGetMinY(objectRect));
-    CGAffineTransform transform = CGAffineTransformConcat(absoluteTransform, trans);
+    CALayer<IJSVGDrawableLayer>* layer = (CALayer<IJSVGDrawableLayer>*)self.referencingLayer;
+    CGRect objectRect = layer.boundingBox;
+    CGRect objectFrame = layer.frame;
+    CGAffineTransform affine = [IJSVGLayer absoluteTransformForLayer:layer];
+    affine = CGAffineTransformTranslate(affine,
+                                        -CGRectGetMinX(objectFrame),
+                                        -CGRectGetMinY(objectFrame));
    CGContextSaveGState(ctx);
+    
+    IJSVGRootLayer* rootNode = (IJSVGRootLayer*)[IJSVGLayer rootLayerForLayer:self];
+    CGRect bounds = [rootNode.viewBox computeValue:CGSizeZero];
+    
    [self.gradient drawInContextRef:ctx
                         objectRect:objectRect
-                  absoluteTransform:transform
-                           viewPort:self.viewBox];
+                  absoluteTransform:affine
+                           viewPort:bounds];
    CGContextRestoreGState(ctx);
 }

@@ -6,10 +6,16 @@
 //  Copyright © 2017 Curtis Hard. All rights reserved.
 //

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

-@interface IJSVGGroupLayer : IJSVGLayer
+@interface IJSVGGroupLayer : IJSVGLayer {
+    
+}
+
+@property (nonatomic, retain) IJSVGUnitRect* viewBox;
+@property (nonatomic, assign) IJSVGViewBoxAlignment viewBoxAlignment;
+@property (nonatomic, assign) IJSVGViewBoxMeetOrSlice viewBoxMeetOrSlice;

@end
@@ -7,7 +7,16 @@
 //

 #import "IJSVGGroupLayer.h"
+#import "IJSVGViewBox.h"
+#import "IJSVGUnitRect.h"
+#import "IJSVGLayer.h"

@implementation IJSVGGroupLayer

+- (void)dealloc
+{
+    (void)[_viewBox release], _viewBox = nil;
+    [super dealloc];
+}
+
@end
@@ -6,14 +6,20 @@
 //  Copyright © 2017 Curtis Hard. All rights reserved.
 //

-#import "IJSVGLayer.h"
+#import <IJSVG/IJSVGLayer.h>
+#import <IJSVG/IJSVGImage.h>
+#import <IJSVG/IJSVGTransformLayer.h>
 #import <AppKit/AppKit.h>
 #import <QuartzCore/QuartzCore.h>

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

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

@end
@@ -10,46 +10,44 @@

@implementation IJSVGImageLayer

- (id)initWithImage:(NSImage*)image
+- (void)dealloc
 {
-    NSRect rect = (NSRect){
-        .origin = NSZeroPoint,
-        .size = image.size
-    };
-    CGImageRef ref = [image CGImageForProposedRect:&rect
-                                           context:nil
-                                             hints:nil];
-    return [self initWithCGImage:ref];
+    (void)[_image release], _image = nil;
+    (void)[_imageLayer release], _imageLayer = nil;
+    [super dealloc];
 }

- (id)initWithCGImage:(CGImageRef)imageRef
+- (id)initWithImage:(IJSVGImage*)image
 {
-    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) {
+        _image = image.retain;
    }
    return self;
 }

- (void)setNeedsDisplay
+- (BOOL)requiresBackingScaleHelp
 {
-    // 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)layoutSublayers
+{
+    [super layoutSublayers];
+    [self reloadContent];
+    [self setNeedsDisplay];
+}
+
+- (void)reloadContent
+{
+    if(_imageLayer == nil) {
+        _imageLayer = [IJSVGLayer layer].retain;
+        _imageLayer.contentsGravity = kCAGravityResize;
+        _imageLayer.affineTransform = CGAffineTransformMakeScale(1.f, -1.f);
+        _imageLayer.contents = (id)_image.CGImage;
+        [self addSublayer:_imageLayer];
+    }
+
+    _imageLayer.frame = self.bounds;
 }

@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;
@@ -15,8 +15,52 @@
@class IJSVGPatternLayer;
@class IJSVGStrokeLayer;
@class IJSVGGroupLayer;
+@class IJSVGLayer;

-@interface IJSVGLayer : CALayer {
+typedef NS_ENUM(NSUInteger, IJSVGLayerFillType) {
+    IJSVGLayerFillTypeColor,
+    IJSVGLayerFillTypePattern,
+    IJSVGLayerFillTypeGradient,
+    IJSVGLayerFillTypeUnknown
+};
+
+typedef NS_OPTIONS(NSUInteger, IJSVGLayerTraits) {
+    IJSVGLayerTraitGroup
+};
+
+@protocol IJSVGPathableLayer <NSObject>
+
+@required
+@property (nonatomic, assign) CGPathRef path;
+
+@end
+
+@protocol IJSVGDrawableLayer <NSObject>
+
+@required
+@property (nonatomic, assign) CGBlendMode blendingMode;
+@property (nonatomic, retain) CALayer<IJSVGDrawableLayer>* clipLayer;
+@property (nonatomic, retain) CALayer<IJSVGDrawableLayer>* maskLayer;
+@property (nonatomic, copy) CAShapeLayerFillRule clipRule;
+@property (nonatomic, copy) CAShapeLayerFillRule fillRule;
+@property (nonatomic, readonly) CGPoint absoluteOrigin;
+@property (nonatomic, assign) IJSVGRenderQuality renderQuality;
+@property (nonatomic, assign) CGFloat backingScaleFactor;
+@property (nonatomic, readonly) BOOL requiresBackingScaleHelp;
+@property (nonatomic, readonly) CALayer<IJSVGDrawableLayer>* rootLayer;
+@property (nonatomic, readonly) CGRect absoluteFrame;
+@property (nonatomic, assign) CGRect boundingBox;
+@property (nonatomic, readonly) CGRect strokeBoundingBox;
+@property (nonatomic, readonly) CGRect boundingBoxBounds;
+@property (nonatomic, assign) CGRect outerBoundingBox;
+@property (nonatomic, assign) CALayer<IJSVGDrawableLayer>* referencingLayer;
+@property (nonatomic, readonly) NSArray<CALayer<IJSVGDrawableLayer>*>* debugLayers;
+
+- (void)performRenderInContext:(CGContextRef)ctx;
+
+@end
+
+@interface IJSVGLayer : CALayer <IJSVGDrawableLayer> {

@private
    IJSVGLayer* _maskingLayer;
@@ -27,19 +71,65 @@
@property (nonatomic, assign) IJSVGStrokeLayer* strokeLayer;
@property (nonatomic, assign) IJSVGGradientLayer* gradientStrokeLayer;
@property (nonatomic, assign) IJSVGPatternLayer* patternStrokeLayer;
-@property (nonatomic, assign) BOOL requiresBackingScaleHelp;
+@property (nonatomic, readonly) BOOL requiresBackingScaleHelp;
@property (nonatomic, assign) CGFloat backingScaleFactor;
@property (nonatomic, assign) IJSVGRenderQuality renderQuality;
@property (nonatomic, assign) CGBlendMode blendingMode;
@property (nonatomic, assign) CGPoint absoluteOrigin;
@property (nonatomic, assign) BOOL convertMasksToPaths;
+@property (nonatomic, retain) CALayer<IJSVGDrawableLayer>* clipLayer;
+@property (nonatomic, copy) CAShapeLayerFillRule clipRule;
+@property (nonatomic, copy) CAShapeLayerFillRule fillRule;
+@property (nonatomic, retain) CALayer<IJSVGDrawableLayer>* maskLayer;
+@property (nonatomic, readonly) CALayer<IJSVGDrawableLayer>* rootLayer;
+@property (nonatomic, readonly) CGRect absoluteFrame;
+@property (nonatomic, assign) CGRect boundingBox;
+@property (nonatomic, readonly) CGRect boundingBoxBounds;
+@property (nonatomic, readonly) CGRect strokeBoundingBox;
+@property (nonatomic, assign) CGRect outerBoundingBox;
+@property (nonatomic, readonly) CGRect outerBoundingBoxBounds;
+@property (nonatomic, assign) CALayer<IJSVGDrawableLayer>* referencingLayer;
+
+ (IJSVGLayerFillType)fillTypeForFill:(id)fill;

 + (NSArray*)deepestSublayersOfLayer:(CALayer*)layer;
-+ (void)recursivelyWalkLayer:(CALayer*)layer
-                   withBlock:(void (^)(CALayer* layer, BOOL isMask))block;
+ (void)recursivelyWalkLayer:(CALayer<IJSVGDrawableLayer>*)layer
+                   withBlock:(void (^)(CALayer<IJSVGDrawableLayer>* layer, BOOL* stop))block;

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

+ (CGImageRef)newMaskImageForLayer:(CALayer<IJSVGDrawableLayer>*)layer
+                             scale:(CGFloat)scale;
+
+ (CGImageRef)newImageForLayer:(CALayer<IJSVGDrawableLayer>*)layer
+                    colorSpace:(CGColorSpaceRef)colorSpace
+                    bitmapInfo:(uint32_t)bitmapInfo
+                         scale:(CGFloat)scale;
+
+ (void)renderLayer:(CALayer<IJSVGDrawableLayer>*)layer
+          inContext:(CGContextRef)ctx;
+
+ (void)applyBlendingMode:(CGBlendMode)blendMode
+                toContext:(CGContextRef)ctx
+             drawingBlock:(dispatch_block_t)drawingBlock;
+
+ (void)clipContextWithClip:(CALayer<IJSVGDrawableLayer>*)clipLayer
+                    toLayer:(CALayer<IJSVGDrawableLayer>*)layer
+                  inContext:(CGContextRef)ctx
+               drawingBlock:(dispatch_block_t)drawingBlock;
+
+ (void)clipContextWithMask:(CALayer<IJSVGDrawableLayer>*)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;
+
+ (void)logLayer:(CALayer<IJSVGDrawableLayer>*)layer;
+
@end
@@ -10,26 +10,255 @@
 #import "IJSVGGroupLayer.h"
 #import "IJSVGLayer.h"
 #import "IJSVGShapeLayer.h"
+#import "IJSVGTransformLayer.h"
+#import "IJSVGRootLayer.h"

@implementation IJSVGLayer

-@synthesize gradientFillLayer;
-@synthesize patternFillLayer;
-@synthesize gradientStrokeLayer;
-@synthesize patternStrokeLayer;
-@synthesize strokeLayer;
-@synthesize requiresBackingScaleHelp;
-@synthesize backingScaleFactor;
-@synthesize blendingMode;
-@synthesize convertMasksToPaths;
-
 - (void)dealloc
 {
-    self.contents = nil;
+    (void)([_clipLayer release]), _clipLayer = nil;
+    (void)([_maskLayer release]), _maskLayer = nil;
+    (void)([_clipRule release]), _clipRule = nil;
+    (void)([_fillRule release]), _fillRule = nil;
    (void)([_maskingLayer release]), _maskingLayer = nil;
    [super dealloc];
 }

+- (instancetype)init
+{
+    if((self = [super init]) != nil) {
+        _boundingBox = CGRectNull;
+        _outerBoundingBox = CGRectNull;
+    }
+    return self;
+}
+
+- (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;
+}
+
+ (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);
+}
+
+ (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)renderLayer:(CALayer<IJSVGDrawableLayer>*)layer
+          inContext:(CGContextRef)ctx
+{
+    dispatch_block_t drawingBlock = ^{
+        [layer performRenderInContext:ctx];
+    };
+    [self applyBlendingMode:layer.blendingMode
+                  toContext:ctx
+               drawingBlock:^{
+        // we need to clip first
+        if(layer.clipLayer == nil) {
+            drawingBlock();
+            return;
+        }
+        [self clipContextWithClip:layer.clipLayer
+                          toLayer:layer
+                        inContext:ctx
+                     drawingBlock:drawingBlock];
+    }];
+}
+
+ (void)applyBlendingMode:(CGBlendMode)blendMode
+                toContext:(CGContextRef)ctx
+             drawingBlock:(dispatch_block_t)drawingBlock
+{
+    if (blendMode != kCGBlendModeNormal) {
+        CGContextSaveGState(ctx);
+        CGContextSetBlendMode(ctx, blendMode);
+        drawingBlock();
+        CGContextRestoreGState(ctx);
+        return;
+    }
+    drawingBlock();
+}
+
+/// 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:CGAffineTransformIdentity
+                inContext:ctx];
+    if([layer.clipRule isEqualToString:kCAFillRuleEvenOdd]) {
+        CGContextEOClip(ctx);
+    } else {
+        CGContextClip(ctx);
+    }
+    drawingBlock();
+    CGContextRestoreGState(ctx);
+}
+
+ (void)clipContextWithMask:(CALayer<IJSVGDrawableLayer>*)maskLayer
+                    toLayer:(CALayer<IJSVGDrawableLayer>*)layer
+                  inContext:(CGContextRef)ctx
+               drawingBlock:(dispatch_block_t)drawingBlock
+{
+    CGContextSaveGState(ctx);
+    CGRect bounds = layer.outerBoundingBox;
+    CGFloat scale = layer.backingScaleFactor;
+    CGImageRef maskImage = [self newMaskImageForLayer:maskLayer
+                                                scale:scale];
+    CGContextClipToMask(ctx, bounds, maskImage);
+    drawingBlock();
+    CGImageRelease(maskImage);
+    CGContextRestoreGState(ctx);
+}
+
+ (CGImageRef)newMaskImageForLayer:(CALayer<IJSVGDrawableLayer>*)layer
+                             scale:(CGFloat)scale
+{
+    CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceGray();
+    CGImageRef ref = [self newImageForLayer:layer
+                                 colorSpace:colorSpace
+                                 bitmapInfo:kCGImageAlphaNone
+                                      scale:scale];
+    CGColorSpaceRelease(colorSpace);
+    return ref;
+}
+
+ (CGImageRef)newImageForLayer:(CALayer<IJSVGDrawableLayer>*)layer
+                    colorSpace:(CGColorSpaceRef)colorSpace
+                    bitmapInfo:(uint32_t)bitmapInfo
+                         scale:(CGFloat)scale
+{
+    CGRect frame = layer.outerBoundingBox;
+    CGContextRef offscreenContext = CGBitmapContextCreate(NULL,
+                                                          ceilf(frame.size.width * scale),
+                                                          ceilf(frame.size.height * scale),
+                                                          8, 0, colorSpace, bitmapInfo);
+            
+    CGContextSaveGState(offscreenContext);
+    CGContextScaleCTM(offscreenContext, scale, scale);
+    CGContextTranslateCTM(offscreenContext, -frame.origin.x, -frame.origin.y);
+    [layer renderInContext:offscreenContext];
+    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];
@@ -44,44 +273,90 @@
    return arr;
 }

-+ (void)recursivelyWalkLayer:(CALayer*)layer
-                   withBlock:(void (^)(CALayer* layer, BOOL isMask))block
+ (void)recursivelyWalkLayer:(CALayer<IJSVGDrawableLayer>*)layer
+                   withBlock:(void (^)(CALayer<IJSVGDrawableLayer>* 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<IJSVGDrawableLayer>* aLayer in layer.sublayers) {
        [self recursivelyWalkLayer:aLayer
                         withBlock:block];
    }
 }

+ (void)logLayer:(CALayer<IJSVGDrawableLayer>*)layer
+{
+    [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 (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;
+    _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) {
+        [self.class clipContextWithMask:_maskLayer
+                                toLayer:self
+                              inContext:ctx
+                           drawingBlock:^{
+            [super renderInContext:ctx];
+        }];
        return;
    }
    [super renderInContext:ctx];
@@ -89,10 +364,10 @@

 - (void)setConvertMasksToPaths:(BOOL)flag
 {
-    if (convertMasksToPaths == flag) {
+    if (_convertMasksToPaths == flag) {
        return;
    }
-    convertMasksToPaths = flag;
+    _convertMasksToPaths = flag;
    if (flag == YES) {
        if (_maskingLayer != nil) {
            (void)([_maskingLayer release]), _maskingLayer = nil;
@@ -145,6 +420,21 @@
    CGContextConcatCTM(context, sublayerTransform);
 }

+- (CALayer<IJSVGDrawableLayer>*)rootLayer
+{
+    return [self.class rootLayerForLayer:self];
+}
+
+- (CGAffineTransform)absoluteTransform
+{
+    return [IJSVGLayer absoluteTransformForLayer:self];
+}
+
+- (BOOL)requiresBackingScaleHelp
+{
+    return _maskLayer != nil || _clipLayer != nil;
+}
+
 - (IJSVGShapeLayer*)maskingLayer
 {
    return (IJSVGShapeLayer*)_maskingLayer ?: nil;
@@ -152,14 +442,8 @@

 - (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];
 }

 - (id<CAAction>)actionForKey:(NSString*)event
@@ -167,4 +451,50 @@
    return nil;
 }

+- (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)outerBoundingBoxBounds
+{
+    return (CGRect) {
+        .origin = CGPointZero,
+        .size = self.outerBoundingBox.size
+    };
+}
+
+- (CGRect)boundingBoxBounds
+{
+    return (CGRect) {
+        .origin = CGPointZero,
+        .size = self.boundingBox.size
+    };
+}
+
+- (CGRect)strokeBoundingBox
+{
+    return self.boundingBox;
+}
+
+- (CALayer<IJSVGDrawableLayer> *)referencingLayer
+{
+    return _referencingLayer ?: self.superlayer;
+}
+
+-(NSArray<CALayer<IJSVGDrawableLayer>*>*)debugLayers
+{
+    return self.sublayers;
+}
+
@end
@@ -12,7 +12,7 @@

@interface IJSVGPatternLayer : IJSVGLayer

-@property (nonatomic, retain) IJSVGLayer* pattern;
+@property (nonatomic, retain) CALayer<IJSVGDrawableLayer>* pattern;
@property (nonatomic, retain) IJSVGPattern* patternNode;

@end
@@ -6,36 +6,61 @@
 //  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
 {
-    (void)([pattern release]), pattern = nil;
-    (void)([patternNode release]), patternNode = nil;
+    (void)([_pattern release]), _pattern = nil;
+    (void)([_patternNode release]), _patternNode = nil;
    [super dealloc];
 }

- (id)init
+- (BOOL)requiresBackingScaleHelp
 {
-    if ((self = [super init]) != nil) {
-        self.requiresBackingScaleHelp = YES;
-        self.shouldRasterize = YES;
-    }
-    return self;
+    return YES;
 }

 void IJSVGPatternDrawingCallBack(void* info, CGContextRef ctx)
 {
    // reassign the layer
    IJSVGPatternLayer* layer = (IJSVGPatternLayer*)info;
-    [layer.pattern renderInContext:ctx];
+    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;
+    
+    [IJSVGViewBox drawViewBox:viewBox
+                       inRect:rect
+                    alignment:alignment
+                  meetOrSlice:meetOrSlice
+                    inContext:ctx
+                 drawingBlock:^(CGSize size) {
+        [layer.pattern renderInContext:ctx];
+    }];
+    CGContextSaveGState(ctx);
 };

+- (CALayer<IJSVGDrawableLayer>*)referencingLayer
+{
+    return [super referencingLayer] ?: self.superlayer;
+}
+
 - (void)drawInContext:(CGContextRef)ctx
 {
    // holder for callback
@@ -45,13 +70,54 @@ void IJSVGPatternDrawingCallBack(void* info, CGContextRef ctx)
    CGColorSpaceRef patternSpace = CGColorSpaceCreatePattern(NULL);
    CGContextSetFillColorSpace(ctx, patternSpace);
    CGColorSpaceRelease(patternSpace);
+    
+    CGRect rect = self.referencingLayer.boundingBoxBounds;
+    
+    IJSVGUnitLength* wLength = _patternNode.width;
+    IJSVGUnitLength* hLength = _patternNode.height;
+    
+    if(self.patternNode.units == IJSVGUnitObjectBoundingBox ||
+       self.patternNode.contentUnits == IJSVGUnitObjectBoundingBox) {
+        wLength = wLength.lengthByMatchingPercentage;
+        hLength = hLength.lengthByMatchingPercentage;
+    }
+    
+    CGFloat width = [wLength computeValue:rect.size.width];
+    CGFloat height = [hLength computeValue:rect.size.height];
+    _cellSize = CGSizeMake(width, height);
+    
+    CALayer<IJSVGDrawableLayer>* layer = (CALayer<IJSVGDrawableLayer>*)self.referencingLayer;
+        
+    // transform us back into the correct space
+    CGAffineTransform transform = CGAffineTransformIdentity;
+    if (self.patternNode.units == IJSVGUnitUserSpaceOnUse) {
+        CGRect frame = layer.boundingBox;
+        transform = [IJSVGLayer absoluteTransformForLayer:layer];
+        transform = CGAffineTransformTranslate(transform,
+                                               -CGRectGetMinX(frame),
+                                               -CGRectGetMinY(frame));
+    }

+    transform = CGAffineTransformConcat(transform, IJSVGConcatTransforms(self.patternNode.transforms));
+    // transform the X and Y shift
+    transform = CGAffineTransformTranslate(transform,
+                                           [_patternNode.x computeValue:rect.size.width],
+                                           [_patternNode.y computeValue:rect.size.height]);
+    
+    // who knew that patterns have viewBoxes? Not me, but here is an implementation
+    // of it anyway
+    if(_patternNode.viewBox != nil && _patternNode.viewBox.isZeroRect == NO) {
+        if(_patternNode.units == IJSVGUnitObjectBoundingBox) {
+            IJSVGUnitRect* viewBox = nil;
+            viewBox = [[_patternNode.viewBox copyByConvertingToUnitsLengthType:IJSVGUnitLengthTypePercentage] autorelease];
+            _viewBox = [viewBox computeValue:rect.size];
+        }
+    }
+        
    // 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 = self.boundingBoxBounds;
+    CGPatternRef ref = CGPatternCreate((void*)self, selfBounds,
+        transform, width, height,
        kCGPatternTilingConstantSpacing,
        true, &callbacks);

@@ -61,7 +127,12 @@ void IJSVGPatternDrawingCallBack(void* info, CGContextRef ctx)
    CGPatternRelease(ref);

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

@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 +1,23 @@
+//
+//  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;
+
+@end
@@ -0,0 +1,71 @@
+//
+//  IJSVGRootLayer.m
+//  IJSVG
+//
+//  Created by Curtis Hard on 15/04/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import "IJSVGRootLayer.h"
+
+@implementation IJSVGRootLayer
+
+- (void)performRenderInContext:(CGContextRef)ctx
+{
+    if(self.viewBox != nil) {
+        CGRect viewBox = [self.viewBox computeValue:CGSizeZero];
+        __block IJSVGRootLayer* weakSelf = self;
+        IJSVGViewBoxDrawingBlock drawingBlock = ^(CGSize size) {
+            // we have to make sure we set the backing scale factor once
+            // we know how scale this will be drawn at
+            weakSelf.backingScaleFactor *= MAX(size.width, size.height);
+            [super performRenderInContext:ctx];
+        };
+        [IJSVGViewBox drawViewBox:viewBox
+                           inRect:self.boundingBoxBounds
+                        alignment:self.viewBoxAlignment
+                      meetOrSlice:self.viewBoxMeetOrSlice
+                        inContext:ctx
+                     drawingBlock:drawingBlock];
+        return;
+    }
+    [super performRenderInContext:ctx];
+}
+
+- (void)setBackingScaleFactor:(CGFloat)backingScaleFactor
+{
+    [super setBackingScaleFactor:backingScaleFactor];
+    if(_disableBackingScalePropagation == YES) {
+        return;
+    }
+    [self propagateBackingScalePropertiesToSublayers];
+}
+
+- (void)propagateBackingScalePropertiesToSublayers
+{
+    __block IJSVGRootLayer* weakSelf = self;
+    for(CALayer<IJSVGDrawableLayer>* layer in self.sublayers) {
+        [IJSVGLayer recursivelyWalkLayer:layer
+                               withBlock:^(CALayer<IJSVGDrawableLayer>* propLayer, BOOL *stop) {
+            propLayer.renderQuality = weakSelf.renderQuality;
+            propLayer.backingScaleFactor = weakSelf.backingScaleFactor;
+        }];
+    }
+}
+
+- (void)renderInContext:(CGContextRef)ctx
+               viewPort:(CGRect)viewPort
+           backingScale:(CGFloat)backingScale
+                quality:(IJSVGRenderQuality)quality
+{
+    CGRect frame = viewPort;
+    self.frame = frame;
+    _disableBackingScalePropagation = YES;
+    self.backingScaleFactor = backingScale;
+    self.renderQuality = quality;
+    _disableBackingScalePropagation = NO;
+    [self propagateBackingScalePropertiesToSublayers];
+    [self renderInContext:ctx];
+}
+
+@end
@@ -6,11 +6,11 @@
 //  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;
@@ -21,14 +21,25 @@
@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, readonly) BOOL requiresBackingScaleHelp;
@property (nonatomic, assign) IJSVGRenderQuality renderQuality;
@property (nonatomic, assign) CGBlendMode blendingMode;
@property (nonatomic, assign) CGPoint absoluteOrigin;
@property (nonatomic, assign) CGPoint originalPathOrigin;
@property (nonatomic, assign) BOOL convertMasksToPaths;
@property (nonatomic, assign) IJSVGPrimitivePathType primitiveType;
+@property (nonatomic, readonly) CGRect computedFrame;
+@property (nonatomic, retain) CALayer<IJSVGDrawableLayer>* clipLayer;
+@property (nonatomic, retain) CALayer<IJSVGDrawableLayer>* maskLayer;
+@property (nonatomic, readonly) CALayer<IJSVGDrawableLayer>* rootLayer;
+@property (nonatomic, readonly) CGRect absoluteFrame;
+@property (nonatomic, assign) CGRect boundingBox;
+@property (nonatomic, assign) CGRect outerBoundingBox;
+@property (nonatomic, readonly) CGRect boundingBoxBounds;
+@property (nonatomic, assign) CALayer<IJSVGDrawableLayer>* referencingLayer;
+@property (nonatomic, assign) CGRect strokeBoundingBox;
+@property (nonatomic, copy) CAShapeLayerFillRule clipRule;

 - (void)applySublayerMaskToContext:(CGContextRef)context
                       forSublayer:(IJSVGLayer*)sublayer
@@ -11,46 +11,74 @@

@implementation IJSVGShapeLayer

-@synthesize gradientFillLayer;
-@synthesize patternFillLayer;
-@synthesize gradientStrokeLayer;
-@synthesize patternStrokeLayer;
-@synthesize strokeLayer;
-@synthesize requiresBackingScaleHelp;
-@synthesize backingScaleFactor;
-@synthesize blendingMode;
-@synthesize convertMasksToPaths;
-@synthesize originalPathOrigin;
-@synthesize renderQuality;
-@synthesize primitiveType;
-
 - (void)dealloc
 {
-    self.contents = nil;
+    (void)([_clipLayer release]), _clipLayer = nil;
+    (void)([_maskLayer release]), _maskLayer = nil;
    (void)([_maskingLayer release]), _maskingLayer = nil;
+    (void)([_clipRule release]), _clipRule = nil;
    [super dealloc];
 }

+- (CALayer<IJSVGDrawableLayer> *)rootLayer
+{
+    return [IJSVGLayer rootLayerForLayer:self];
+}
+
+- (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
+    };
+}
+
+- (BOOL)requiresBackingScaleHelp
+{
+    return _maskLayer != nil || _clipLayer != nil;
+}
+
 - (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;
+    _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];
@@ -58,10 +86,10 @@

 - (void)setConvertMasksToPaths:(BOOL)flag
 {
-    if (convertMasksToPaths == flag) {
+    if (_convertMasksToPaths == flag) {
        return;
    }
-    convertMasksToPaths = flag;
+    _convertMasksToPaths = flag;
    if (flag == YES) {
        if (_maskingLayer != nil) {
            (void)([_maskingLayer release]), _maskingLayer = nil;
@@ -121,26 +149,8 @@

 - (void)renderInContext:(CGContextRef)ctx
 {
-    if (self.blendingMode != kCGBlendModeNormal) {
-        CGContextSaveGState(ctx);
-        CGContextSetBlendMode(ctx, self.blendingMode);
-        [self _customRenderInContext:ctx];
-        CGContextRestoreGState(ctx);
-        return;
-    }
-    [self _customRenderInContext:ctx];
-}
-
- (CGPoint)absoluteOrigin
-{
-    CGPoint point = CGPointZero;
-    CALayer* pLayer = self;
-    while (pLayer != nil) {
-        point.x += pLayer.frame.origin.x;
-        point.y += pLayer.frame.origin.y;
-        pLayer = pLayer.superlayer;
-    }
-    return point;
+    [IJSVGLayer renderLayer:(IJSVGLayer*)self
+                  inContext:ctx];
 }

 - (id<CAAction>)actionForKey:(NSString*)event
@@ -148,4 +158,9 @@
    return nil;
 }

+-(NSArray<CALayer<IJSVGDrawableLayer>*>*)debugLayers
+{
+    return self.sublayers;
+}
+
@end
@@ -10,4 +10,11 @@

@implementation IJSVGStrokeLayer

+- (CGRect)outerBoundingBox
+{
+    return CGRectMake(-self.lineWidth / 2.f, -self.lineWidth / 2.f,
+                      self.boundingBox.size.width + self.lineWidth,
+                      self.boundingBox.size.height + self.lineWidth);
+}
+
@end
@@ -0,0 +1,21 @@
+//
+//  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>
+
+@property (nonatomic, assign) CGBlendMode blendingMode;
+@property (nonatomic, retain) CALayer<IJSVGDrawableLayer>* clipLayer;
+@property (nonatomic, readonly) CGPoint absoluteOrigin;
+@property (nonatomic, readonly) CGRect computedFrame;
+@property (nonatomic, readonly) CALayer<IJSVGDrawableLayer>* referencedLayer;
+@property (nonatomic, assign) CALayer<IJSVGDrawableLayer>* referencingLayer;
+
+@end
@@ -0,0 +1,69 @@
+//
+//  IJSVGTransformLayer.m
+//  IJSVG
+//
+//  Created by Curtis Hard on 31/03/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import "IJSVGTransformLayer.h"
+
+@implementation IJSVGTransformLayer
+
+@synthesize backingScaleFactor;
+@synthesize renderQuality;
+@synthesize requiresBackingScaleHelp;
+@synthesize maskLayer = _maskLayer;
+@synthesize fillRule = _fillRule;
+@synthesize clipRule = _clipRule;
+@synthesize absoluteFrame;
+@synthesize boundingBox;
+@synthesize boundingBoxBounds;
+@synthesize strokeBoundingBox;
+@synthesize outerBoundingBox;
+
+- (void)dealloc
+{
+    (void)[_maskLayer release], _maskLayer = nil;
+    (void)[_fillRule release], _fillRule = nil;
+    (void)[_clipRule release], _clipRule = nil;
+    (void)[_clipLayer release], _clipLayer = nil;
+    [super dealloc];
+}
+
+- (CALayer<IJSVGDrawableLayer> *)referencedLayer
+{
+    return self.sublayers.firstObject;
+}
+
+- (CALayer<IJSVGDrawableLayer> *)referencingLayer {
+    return _referencingLayer ?: self.superlayer;
+}
+
+- (CALayer<IJSVGDrawableLayer>*)rootLayer
+{
+    return [IJSVGLayer rootLayerForLayer:self];
+}
+
+- (BOOL)requiresBackingScaleHelp
+{
+    return YES;
+}
+
+- (void)renderInContext:(CGContextRef)ctx
+{
+    [IJSVGLayer renderLayer:self
+                  inContext:ctx];
+}
+
+- (void)performRenderInContext:(CGContextRef)ctx
+{
+    [super renderInContext:ctx];
+}
+
+- (NSArray<CALayer<IJSVGDrawableLayer>*>*)debugLayers
+{
+    return self.sublayers;
+}
+
+@end
@@ -0,0 +1,21 @@
+//
+//  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, retain) NSColor* color;
+
+ (IJSVGNode*)colorNodeWithColor:(NSColor*)color;
+
+- (id)initWithColor:(NSColor*)color;
+
+@end
@@ -0,0 +1,39 @@
+//
+//  IJSVGColorNode.m
+//  IJSVG
+//
+//  Created by Curtis Hard on 29/03/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import "IJSVGColorNode.h"
+
+@implementation IJSVGColorNode
+
+- (void)dealloc
+{
+    (void)[_color release], _color = nil;
+    [super dealloc];
+}
+
+ (IJSVGNode*)colorNodeWithColor:(NSColor *)color
+{
+    return [[[self alloc] initWithColor:color] autorelease];
+}
+
+- (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
@@ -6,7 +6,7 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

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

@interface IJSVGDef : NSObject {
@@ -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
@@ -10,11 +10,9 @@

@implementation IJSVGForeignObject

-@synthesize requiredExtension;
-
 - (void)dealloc
 {
-    (void)([requiredExtension release]), requiredExtension = nil;
+    (void)([_requiredExtension release]), _requiredExtension = nil;
    [super dealloc];
 }

@@ -6,12 +6,13 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

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

-@interface IJSVGGradient : IJSVGNode
+@interface IJSVGGradient : IJSVGGroup

@property (nonatomic, retain) NSGradient* gradient;
@property (nonatomic, assign) CGGradientRef CGGradient;
@@ -21,8 +22,9 @@
@property (nonatomic, retain) IJSVGUnitLength* y2;
@property (nonatomic, retain) IJSVGColorList* colorList;

-+ (CGFloat*)computeColorStopsFromString:(NSXMLElement*)element
-                                 colors:(NSArray**)someColors;
+ (CGFloat*)computeColorStops:(IJSVGGradient*)gradient
+                       colors:(NSArray**)someColors;
+
 - (CGGradientRef)CGGradient;
 - (void)drawInContextRef:(CGContextRef)ctx
              objectRect:(NSRect)objectRect
@@ -33,6 +35,7 @@
                end:(CGPoint)endPoint
            context:(CGContextRef)ctx;

+- (IJSVGColorList*)colorList;
 - (IJSVGColorList*)computedColorList;

@end
@@ -7,23 +7,22 @@
 //

 #import "IJSVGGradient.h"
+#import "IJSVGParser.h"

@implementation IJSVGGradient

-@synthesize gradient, CGGradient;
-@synthesize x1, x2, y1, y2;
-@synthesize colorList = _colorList;
+@synthesize colorList = _privateColorList;

 - (void)dealloc
 {
-    (void)([x1 release]), x1 = nil;
-    (void)([x2 release]), x2 = nil;
-    (void)([y1 release]), y1 = nil;
-    (void)([y2 release]), y2 = nil;
-    (void)([gradient release]), gradient = nil;
-    (void)([_colorList release]), _colorList = nil;
-    if (CGGradient != nil) {
-        CGGradientRelease(CGGradient);
+    (void)([_x1 release]), _x1 = nil;
+    (void)([_x2 release]), _x2 = nil;
+    (void)([_y1 release]), _y1 = nil;
+    (void)([_y2 release]), _y2 = nil;
+    (void)([_gradient release]), _gradient = nil;
+    (void)([_privateColorList release]), _privateColorList = nil;
+    if (_CGGradient != nil) {
+        CGGradientRelease(_CGGradient);
    }
    [super dealloc];
 }
@@ -37,84 +36,41 @@

 - (void)setColorList:(IJSVGColorList*)list
 {
-    (void)([_colorList release]), _colorList = nil;
-    _colorList = list.retain;
-    if (CGGradient != nil) {
-        CGGradientRelease(CGGradient);
+    (void)([_privateColorList release]), _privateColorList = nil;
+    _privateColorList = list.retain;
+    if (_CGGradient != nil) {
+        CGGradientRelease(_CGGradient);
+        _CGGradient = nil;
    }
 }

-+ (CGFloat*)computeColorStopsFromString:(NSXMLElement*)element
-                                 colors:(NSArray**)someColors
+ (CGFloat *)computeColorStops:(IJSVGGradient*)gradient
+                        colors:(NSArray**)someColors
 {
-    // find each stop element
-    NSArray* stops = [element children];
+    NSArray<IJSVGNode*>* stops = gradient.children;
    NSMutableArray* colors = [[[NSMutableArray alloc] initWithCapacity:stops.count] autorelease];
    CGFloat* stopsParams = (CGFloat*)malloc(stops.count * sizeof(CGFloat));
+    
    NSInteger i = 0;
-    for (NSXMLElement* stop in stops) {
-        // find the offset
-        CGFloat offset = [stop attributeForName:@"offset"].stringValue.floatValue;
-        if (offset > 1.f) {
-            offset /= 100.f;
-        }
-
+    for(IJSVGNode* stopNode in stops) {
+        NSColor* color = ((IJSVGColorNode*)(stopNode.fill)).color;
+        CGFloat opacity = stopNode.fillOpacity.value;
+        CGFloat offset = stopNode.offset.value;
        stopsParams[i++] = offset;
-
-        // find the stop opacity
-        CGFloat stopOpacity = 1.f;
-        NSXMLNode* stopOpacityAttribute = [stop attributeForName:@"stop-opacity"];
-        if (stopOpacityAttribute != nil) {
-            stopOpacity = stopOpacityAttribute.stringValue.floatValue;
-        }
-
-        // find the stop color
-        NSString* scs = [stop attributeForName:@"stop-color"].stringValue;
-        NSColor* stopColor = [IJSVGColor colorFromString:scs];
-        if (stopColor != nil && stopOpacity != 1.f) {
-            stopColor = [IJSVGColor changeAlphaOnColor:stopColor
-                                                    to:stopOpacity];
-        }
-
-        // compute any style that there was...
-        NSXMLNode* styleAttribute = [stop attributeForName:@"style"];
-        if (styleAttribute != nil) {
-
-            IJSVGStyle* style = [IJSVGStyle parseStyleString:styleAttribute.stringValue];
-            NSColor* color = [IJSVGColor colorFromString:[style property:@"stop-color"]];
-
-            // we have a color!
-            if (color != nil) {
-                // is there a stop opacity?
-                NSString* numberString = nil;
-                if ((numberString = [style property:@"stop-opacity"]) != nil) {
-                    color = [IJSVGColor changeAlphaOnColor:color
-                                                        to:numberString.floatValue];
-                } else {
-                    color = [IJSVGColor changeAlphaOnColor:color
-                                                        to:stopOpacity];
-                }
-                stopColor = color;
+        if(color == nil) {
+            color = [IJSVGColor colorFromHEXInteger:0x000000];
+            if(opacity != 1.f) {
+                color = [IJSVGColor changeAlphaOnColor:color
+                                                    to:opacity];
            }
        }
-
-        // default is black
-        if (stopColor == nil) {
-            stopColor = [IJSVGColor colorFromString:@"black"];
-            if (stopOpacity != 1.f) {
-                stopColor = [IJSVGColor changeAlphaOnColor:stopColor
-                                                        to:stopOpacity];
-            }
-        }
-
-        // add the stop color
-        [(NSMutableArray*)colors addObject:stopColor];
+        [colors addObject:color];
    }
-    *someColors = colors;
+    *someColors = (NSArray*)colors;
    return stopsParams;
 }

- (IJSVGColorList*)computedColorList
+- (IJSVGColorList*)colorList
 {
    IJSVGColorList* sheet = [[[IJSVGColorList alloc] init] autorelease];
    NSInteger num = self.gradient.numberOfColorStops;
@@ -123,21 +79,28 @@
        [self.gradient getColor:&color
                       location:nil
                        atIndex:i];
-        [sheet addColor:color];
+        IJSVGColorType* type = [IJSVGColorType typeWithColor:color
+                                                        flags:IJSVGColorTypeFlagStop];
+        [sheet addColor:type];
    }
    return sheet;
 }

+- (IJSVGColorList*)computedColorList
+{
+    return _privateColorList;
+}
+
 - (CGGradientRef)CGGradient
 {
    // store it in the cache
-    if (CGGradient != nil) {
-        return CGGradient;
+    if (_CGGradient != nil) {
+        return _CGGradient;
    }

    // actually create the gradient
    NSInteger num = self.gradient.numberOfColorStops;
-    CGFloat* locations = malloc(sizeof(CGFloat) * num);
+    CGFloat* locations = (CGFloat*)malloc(sizeof(CGFloat) * num);
    CFMutableArrayRef colors = CFArrayCreateMutable(kCFAllocatorDefault, (CFIndex)num,
        &kCFTypeArrayCallBacks);
    for (NSInteger i = 0; i < num; i++) {
@@ -145,16 +108,16 @@
        [self.gradient getColor:&color
                       location:&locations[i]
                        atIndex:i];
-        if (_colorList != nil) {
-            color = [_colorList proposedColorForColor:color];
+        if (_privateColorList != nil) {
+            color = [_privateColorList proposedColorForColor:color];
        }
        CFArrayAppendValue(colors, color.CGColor);
    }
-    CGGradientRef result = CGGradientCreateWithColors(self.gradient.colorSpace.CGColorSpace,
+    CGGradientRef result = CGGradientCreateWithColors(_gradient.colorSpace.CGColorSpace,
        colors, locations);
    CFRelease(colors);
    free(locations);
-    return CGGradient = result;
+    return _CGGradient = result;
 }

 - (void)drawInContextRef:(CGContextRef)ctx
@@ -6,17 +6,18 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

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

@interface IJSVGGroup : IJSVGNode {

-    NSMutableArray* children;
+@private
+    NSMutableArray<IJSVGNode*>* _children;
 }

- (void)addChild:(id)child;
- (NSArray*)children;
- (void)purgeChildren;
+@property (nonatomic, readonly) NSArray<IJSVGNode*>* children;
+
+- (void)addChild:(IJSVGNode*)child;

@end
@@ -12,21 +12,24 @@

 - (void)dealloc
 {
-    (void)([children release]), children = nil;
+    (void)([_children release]), _children = nil;
    [super dealloc];
 }

 - (id)init
 {
    if ((self = [super init]) != nil) {
-        children = [[NSMutableArray alloc] init];
+        _children = [[NSMutableArray alloc] init];
    }
    return self;
 }

 - (void)prepareFromCopy
 {
-    children = [[NSMutableArray alloc] init];
+    if(_children != nil) {
+        (void)[_children release], _children = nil;
+    }
+    _children = [[NSMutableArray alloc] init];
 }

 - (id)copyWithZone:(NSZone*)zone
@@ -34,7 +37,7 @@
    IJSVGGroup* node = [super copyWithZone:zone];
    [node prepareFromCopy];

-    for (IJSVGNode* childNode in self.children) {
+    for (IJSVGNode* childNode in _children) {
        childNode = [[childNode copy] autorelease];
        childNode.parentNode = node;
        [node addChild:childNode];
@@ -42,25 +45,41 @@
    return node;
 }

- (void)purgeChildren
+- (void)addChild:(IJSVGNode*)child
 {
-    [children removeAllObjects];
+    if(child == nil || (child.parentNode == self && [_children containsObject:child])) {
+        return;
+    }
+    child.parentNode = self;
+    [_children addObject:child];
 }

- (void)addChild:(id)child
+- (void)removeChild:(IJSVGNode*)child
 {
-    if (child != nil)
-        [children addObject:child];
+    if(child.parentNode == self) {
+        [child detach];
+    }
+    [_children removeObject:child];
 }

- (NSArray*)children
+- (CGRect)bounds
 {
-    return children;
+    CGRect rect = CGRectZero;
+    for(IJSVGNode* node in self.children) {
+        rect = CGRectUnion(rect, node.bounds);
+    }
+    return rect;
+}
+
+- (NSArray<IJSVGNode*>*)children
+{
+    return _children;
 }

 - (NSString*)description
 {
-    return [NSString stringWithFormat:@"%@ - %@", [super description], self.children];
+    return [NSString stringWithFormat:@"%@ - %@",
+            [super description], self.children];
 }

@end
@@ -6,21 +6,22 @@
 //  Copyright © 2016 Curtis Hard. All rights reserved.
 //

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

@class IJSVGPath;

@interface IJSVGImage : IJSVGNode {
-
-    NSImage* image;
    CGImageRef CGImage;
-    IJSVGPath* imagePath;
 }

+@property (nonatomic, readonly) CGSize intrinsicSize;
+@property (nonatomic, readonly) CGRect intrinsicBounds;
+@property (nonatomic, readonly) CGAffineTransform intrinsicTransform;
+@property (nonatomic, retain) NSImage* image;
+
 - (CGImageRef)CGImage;
- (void)drawInContextRef:(CGContextRef)context
-                    path:(IJSVGPath*)path;
- (void)loadFromBase64EncodedString:(NSString*)encodedString;
+- (void)loadFromString:(NSString*)encodedString;
+- (void)loadFromURL:(NSURL*)aURL;

@end
@@ -15,12 +15,11 @@
 - (void)dealloc
 {
    (void)(CGImageRelease(CGImage)), CGImage = nil;
-    (void)([imagePath release]), imagePath = nil;
-    (void)([image release]), image = nil;
+    (void)([_image release]), _image = nil;
    [super dealloc];
 }

- (void)loadFromBase64EncodedString:(NSString*)encodedString
+- (void)loadFromString:(NSString*)encodedString
 {
    if ([encodedString hasPrefix:@"data:"]) {
        encodedString = [encodedString stringByReplacingOccurrencesOfString:@"\\s+"
@@ -28,8 +27,15 @@
                                                                    options:NSRegularExpressionSearch
                                                                      range:NSMakeRange(0, encodedString.length)];
    }
-    NSURL* URL = [NSURL URLWithString:encodedString];
-    NSData* data = [NSData dataWithContentsOfURL:URL];
+    NSURL* url = [NSURL URLWithString:encodedString];
+    if(url != nil) {
+        [self loadFromURL:url];
+    }
+}
+
+- (void)loadFromURL:(NSURL*)aURL
+{
+    NSData* data = [NSData dataWithContentsOfURL:aURL];

    // no data, just ignore...invalid probably
    if (data == nil) {
@@ -41,35 +47,24 @@
    [self setImage:anImage];
 }

- (IJSVGPath*)path
-{
-    if (imagePath == nil) {
-        // lazy load the path as it might not be needed
-        imagePath = [[IJSVGPath alloc] init];
-        [imagePath.path appendBezierPathWithRect:NSMakeRect(0.f, 0.f, self.width.value, self.height.value)];
-        [imagePath close];
-    }
-    return imagePath;
-}
-
 - (void)setImage:(NSImage*)anImage
 {
-    if (image != nil) {
-        (void)([image release]), image = nil;
+    if (_image != nil) {
+        (void)([_image release]), _image = nil;
    }
-    image = [anImage retain];
+    _image = [anImage retain];
+    _intrinsicSize = (CGSize)_image.size;

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

-    NSRect rect = NSMakeRect(0.f, 0.f, self.width.value, self.height.value);
-    CGImage = [image CGImageForProposedRect:&rect
-                                    context:nil
-                                      hints:nil];
+    NSRect rect = NSMakeRect(0.f, 0.f, _intrinsicSize.width, _intrinsicSize.height);
+    CGImage = [_image CGImageForProposedRect:&rect
+                                     context:nil
+                                       hints:nil];

-    // be sure to retain (some reason this is required in Xcode 8 beta 5?)
    CGImageRetain(CGImage);
 }

@@ -78,32 +73,26 @@
    return CGImage;
 }

- (void)drawInContextRef:(CGContextRef)context
-                    path:(IJSVGPath*)path
+- (CGRect)intrinsicBounds
 {
-    // run the transforms
-    // draw the image
-    if (self.width.value == 0.f || self.height.value == 0.f) {
-        return;
-    }
+    CGRect rect = CGRectZero;
+    rect.size.width = _intrinsicSize.width;
+    rect.size.height = _intrinsicSize.height;
+    return rect;
+}

-    // make sure path is set
-    if (path == nil) {
-        path = [self path];
-    }
+- (CGAffineTransform)intrinsicTransform
+{
+    CGFloat widthRatio = self.width.value / _intrinsicSize.width;
+    CGFloat heightRatio = self.height.value / _intrinsicSize.height;
+    return CGAffineTransformMakeScale(widthRatio, heightRatio);
+}

-    CGRect rect = path.path.bounds;
-    CGRect bounds = CGRectMake(0.f, 0.f, rect.size.width, rect.size.height);
-
-    // save the state of the context
-    CGContextSaveGState(context);
-    {
-        // flip the coordinates
-        CGContextTranslateCTM(context, rect.origin.x, (rect.origin.y) + rect.size.height);
-        CGContextScaleCTM(context, 1.f, -1.f);
-        CGContextDrawImage(context, bounds, CGImage);
-    }
-    CGContextRestoreGState(context);
+- (CGRect)bounds
+{
+    return CGRectMake(0.f, 0.f,
+                      self.width.value,
+                      self.height.value);
 }

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

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

@interface IJSVGLinearGradient : IJSVGGradient
@@ -8,6 +8,7 @@

 #import "IJSVGLinearGradient.h"
 #import "IJSVGUtils.h"
+#import "IJSVGParser.h"

@implementation IJSVGLinearGradient

@@ -15,20 +16,20 @@
                    gradient:(IJSVGLinearGradient*)aGradient
 {
    // just ask unit for the value
-    NSString* x1 = ([element attributeForName:@"x1"].stringValue ?: @"0");
-    NSString* x2 = ([element attributeForName:@"x2"].stringValue ?: @"100%");
-    NSString* y1 = ([element attributeForName:@"y1"].stringValue ?: @"0");
-    NSString* y2 = ([element attributeForName:@"y2"].stringValue ?: @"0");
+    NSString* x1 = ([element attributeForName:IJSVGAttributeX1].stringValue ?: @"0");
+    NSString* x2 = ([element attributeForName:IJSVGAttributeX2].stringValue ?: @"100%");
+    NSString* y1 = ([element attributeForName:IJSVGAttributeY1].stringValue ?: @"0");
+    NSString* y2 = ([element attributeForName:IJSVGAttributeY2].stringValue ?: @"0");
    aGradient.x1 = [IJSVGGradientUnitLength unitWithString:x1 fromUnitType:aGradient.units];
    aGradient.x2 = [IJSVGGradientUnitLength unitWithString:x2 fromUnitType:aGradient.units];
    aGradient.y1 = [IJSVGGradientUnitLength unitWithString:y1 fromUnitType:aGradient.units];
    aGradient.y2 = [IJSVGGradientUnitLength unitWithString:y2 fromUnitType:aGradient.units];
-
+    
    // compute the color stops and colours
    NSArray* colors = nil;
-    CGFloat* stopsParams = [self.class computeColorStopsFromString:element
-                                                            colors:&colors];
-
+    CGFloat* stopsParams = [self.class computeColorStops:aGradient
+                                                  colors:&colors];
+    
    // create the gradient with the colours
    NSGradient* grad = [[NSGradient alloc] initWithColors:colors
                                              atLocations:stopsParams
@@ -50,7 +51,7 @@
    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) {
@@ -64,7 +65,7 @@

    gradientEndPoint = CGPointMake([self.x2 computeValue:width],
        [self.y2 computeValue:height]);
-
+    
    // transform the context
    CGContextConcatCTM(ctx, selfTransform);

@@ -6,18 +6,29 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGStyle.h"
-#import "IJSVGUnitLength.h"
+#import <IJSVG/IJSVGStyle.h>
+#import <IJSVG/IJSVGUnitLength.h>
+#import <IJSVG/IJSVGViewBox.h>
 #import <AppKit/AppKit.h>
 #import <Foundation/Foundation.h>

+@class IJSVGNode;
@class IJSVG;
@class IJSVGGroup;
-@class IJSVGDef;
@class IJSVGGradient;
@class IJSVGGroup;
@class IJSVGPattern;
@class IJSVGTransform;
+@class IJSVGRootNode;
+@class IJSVGUnitRect;
+
+typedef void (^IJSVGNodeWalkHandler)(IJSVGNode* node, BOOL* allowChildNodes, BOOL* stop);
+
+typedef NS_OPTIONS(NSInteger, IJSVGNodeTraits) {
+    IJSVGNodeTraitNone = 0,
+    IJSVGNodeTraitStroked = 1 << 0,
+    IJSVGNodeTraitPaintable = 1 << 1
+};

 typedef NS_ENUM(NSInteger, IJSVGNodeType) {
    IJSVGNodeTypeGroup,
@@ -43,7 +54,11 @@ typedef NS_ENUM(NSInteger, IJSVGNodeType) {
    IJSVGNodeTypeTextSpan,
    IJSVGNodeTypeStyle,
    IJSVGNodeTypeSwitch,
+    IJSVGNodeTypeTitle,
+    IJSVGNodeTypeDesc,
+    IJSVGNodeTypeStop,
    IJSVGNodeTypeNotFound,
+    IJSVGNodeTypeUnknown,
 };

 typedef NS_ENUM(NSInteger, IJSVGWindingRule) {
@@ -93,17 +108,30 @@ typedef NS_ENUM(NSInteger, IJSVGBlendMode) {
    IJSVGBlendModeLuminosity = kCGBlendModeLuminosity
 };

+typedef NS_ENUM(NSInteger, IJSVGOverflowVisibility) {
+    IJSVGOverflowVisibilityHidden,
+    IJSVGOverflowVisibilityVisible
+};
+
 static CGFloat IJSVGInheritedFloatValue = -99.9999991;

@interface IJSVGNode : NSObject <NSCopying>

+void IJSVGAssertPaintableObject(id object);
+
+@property (nonatomic, assign) IJSVGNodeTraits traits;
+@property (nonatomic, assign, readonly) CGRect bounds;
+@property (nonatomic, retain) IJSVGUnitRect* viewBox;
+@property (nonatomic, assign) IJSVGViewBoxAlignment viewBoxAlignment;
+@property (nonatomic, assign) IJSVGViewBoxMeetOrSlice viewBoxMeetOrSlice;
+@property (nonatomic, copy) NSString* title;
+@property (nonatomic, copy) NSString* desc;
@property (nonatomic, assign) IJSVGNodeType type;
@property (nonatomic, copy) NSString* name;
@property (nonatomic, copy) NSString* className;
@property (nonatomic, retain) NSArray* classNameList;
@property (nonatomic, copy) NSString* unicode;
@property (nonatomic, assign) BOOL shouldRender;
-@property (nonatomic, assign) BOOL usesDefaultFillColor;
@property (nonatomic, retain) IJSVGUnitLength* x;
@property (nonatomic, retain) IJSVGUnitLength* y;
@property (nonatomic, retain) IJSVGUnitLength* width;
@@ -112,36 +140,43 @@ static CGFloat IJSVGInheritedFloatValue = -99.9999991;
@property (nonatomic, retain) IJSVGUnitLength* fillOpacity;
@property (nonatomic, retain) IJSVGUnitLength* strokeOpacity;
@property (nonatomic, retain) IJSVGUnitLength* strokeWidth;
-@property (nonatomic, retain) NSColor* fillColor;
-@property (nonatomic, retain) NSColor* strokeColor;
+@property (nonatomic, retain) IJSVGUnitLength* offset;
+@property (nonatomic, retain) IJSVGNode* fill;
+@property (nonatomic, retain) IJSVGNode* stroke;
@property (nonatomic, copy) NSString* identifier;
@property (nonatomic, assign) IJSVGNode* parentNode;
-@property (nonatomic, assign) IJSVGNode* intermediateParentNode;
@property (nonatomic, retain) IJSVGGroup* clipPath;
@property (nonatomic, retain) IJSVGGroup* mask;
@property (nonatomic, assign) IJSVGWindingRule windingRule;
@property (nonatomic, assign) IJSVGLineCapStyle lineCapStyle;
@property (nonatomic, assign) IJSVGLineJoinStyle lineJoinStyle;
@property (nonatomic, retain) NSArray<IJSVGTransform*>* transforms;
-@property (nonatomic, retain) IJSVGDef* def;
-@property (nonatomic, retain) IJSVGGradient* fillGradient;
-@property (nonatomic, retain) IJSVGPattern* fillPattern;
-@property (nonatomic, retain) IJSVGGradient* strokeGradient;
-@property (nonatomic, retain) IJSVGPattern* strokePattern;
@property (nonatomic, assign) CGFloat* strokeDashArray;
@property (nonatomic, assign) NSInteger strokeDashArrayCount;
+@property (nonatomic, readonly) NSArray<NSNumber*>* lineDashPattern;
@property (nonatomic, retain) IJSVGUnitLength* strokeDashOffset;
@property (nonatomic, retain) IJSVG* svg;
@property (nonatomic, assign) IJSVGUnitType contentUnits;
@property (nonatomic, assign) IJSVGUnitType units;
@property (nonatomic, assign) IJSVGBlendMode blendMode;
+@property (nonatomic, assign) IJSVGOverflowVisibility overflowVisibility;
+
+ (void)walkNodeTree:(IJSVGNode*)node
+            handler:(IJSVGNodeWalkHandler)handler;

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

 - (void)applyPropertiesFromNode:(IJSVGNode*)node;
- (id)initWithDef:(BOOL)flag;
- (void)addDef:(IJSVGNode*)aDef;
- (IJSVGDef*)defForID:(NSString*)anID;
+
+- (IJSVGUnitType)contentUnitsWithReferencingNodeBounds:(CGRect*)bounds;
+- (IJSVGUnitType)contentUnitsWithReferencingNode:(IJSVGNode**)referencingNode;
+
+- (instancetype)detach;
+
+- (void)addTraits:(IJSVGNodeTraits)traits;
+- (void)removeTraits:(IJSVGNodeTraits)traits;
+- (BOOL)matchesTraits:(IJSVGNodeTraits)traits;
+- (void)computeTraits;

@end
@@ -6,212 +6,187 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

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

@implementation IJSVGNode

-@synthesize shouldRender;
-@synthesize type;
-@synthesize name;
-@synthesize classNameList;
-@synthesize className;
-@synthesize unicode;
-@synthesize x;
-@synthesize y;
-@synthesize width;
-@synthesize height;
-@synthesize fillColor;
-@synthesize fillOpacity;
-@synthesize strokeColor;
-@synthesize strokeOpacity;
-@synthesize strokeWidth;
-@synthesize opacity;
-@synthesize identifier;
-@synthesize parentNode;
-@synthesize intermediateParentNode;
-@synthesize transforms;
-@synthesize windingRule;
-@synthesize def;
-@synthesize fillGradient;
-@synthesize fillPattern;
-@synthesize strokeGradient;
-@synthesize strokePattern;
-@synthesize clipPath;
-@synthesize lineCapStyle;
-@synthesize lineJoinStyle;
-@synthesize strokeDashArrayCount;
-@synthesize strokeDashArray;
-@synthesize strokeDashOffset;
-@synthesize usesDefaultFillColor;
-@synthesize svg;
-@synthesize mask;
-@synthesize units;
-@synthesize contentUnits;
-@synthesize blendMode;
+@synthesize fill = _fill;
+@synthesize stroke = _stroke;

 - (void)dealloc
 {
-    free(strokeDashArray);
-    (void)([x release]), x = nil;
-    (void)([y release]), y = nil;
-    (void)([width release]), width = nil;
-    (void)([height release]), height = nil;
-    (void)([opacity release]), opacity = nil;
-    (void)([fillOpacity release]), fillOpacity = nil;
-    (void)([strokeOpacity release]), strokeOpacity = nil;
-    (void)([strokeWidth release]), strokeWidth = nil;
-    (void)([strokeDashOffset release]), strokeDashOffset = nil;
-    (void)([unicode release]), unicode = nil;
-    (void)([fillGradient release]), fillGradient = nil;
-    (void)([strokeGradient release]), strokeGradient = nil;
-    (void)([strokePattern release]), strokePattern = nil;
-    (void)([transforms release]), transforms = nil;
-    (void)([fillColor release]), fillColor = nil;
-    (void)([strokeColor release]), strokeColor = nil;
-    (void)([identifier release]), identifier = nil;
-    (void)([def release]), def = nil;
-    (void)([name release]), name = nil;
-    (void)([className release]), className = nil;
-    (void)([classNameList release]), classNameList = nil;
-    (void)([fillPattern release]), fillPattern = nil;
-    (void)([clipPath release]), clipPath = nil;
-    (void)([svg release]), svg = nil;
-    (void)([mask release]), mask = nil;
+    (void)free(_strokeDashArray), _strokeDashArray = NULL;
+    (void)([_x release]), _x = nil;
+    (void)([_y release]), _y = nil;
+    (void)([_width release]), _width = nil;
+    (void)([_height release]), _height = nil;
+    (void)([_opacity release]), _opacity = nil;
+    (void)([_offset release]), _offset = nil;
+    (void)([_fillOpacity release]), _fillOpacity = nil;
+    (void)([_strokeOpacity release]), _strokeOpacity = nil;
+    (void)([_strokeWidth release]), _strokeWidth = nil;
+    (void)([_strokeDashOffset release]), _strokeDashOffset = nil;
+    (void)([_unicode release]), _unicode = nil;
+    (void)([_fill release]), _fill = nil;
+    (void)([_stroke release]), _stroke = nil;
+    (void)([_transforms release]), _transforms = nil;
+    (void)([_identifier release]), _identifier = nil;
+    (void)([_name release]), _name = nil;
+    (void)([_title release]), _title = nil;
+    (void)([_desc release]), _desc = nil;
+    (void)([_className release]), _className = nil;
+    (void)([_classNameList release]), _classNameList = nil;
+    (void)([_clipPath release]), _clipPath = nil;
+    (void)([_svg release]), _svg = nil;
+    (void)([_mask release]), _mask = nil;
+    (void)([_viewBox release]), _viewBox = nil;
    [super dealloc];
 }

 + (IJSVGNodeType)typeForString:(NSString*)string
                          kind:(NSXMLNodeKind)kind
 {
-    string = [string lowercaseString];
-    if ([string isEqualToString:@"style"])
+    // possible fix for older os's that complain
+    if(string == nil || kind == NSXMLCommentKind) {
+        return IJSVGNodeTypeNotFound;
+    }
+    
+    const char* name = string.lowercaseString.UTF8String;
+    if(name == NULL) {
+        return IJSVGNodeTypeNotFound;
+    }
+    if (strcmp(name, "style") == 0) {
        return IJSVGNodeTypeStyle;
-    if ([string isEqualToString:@"switch"])
+    }
+    if (strcmp(name, "switch") == 0) {
        return IJSVGNodeTypeSwitch;
-    if ([string isEqualToString:@"defs"])
+    }
+    if (strcmp(name, "defs") == 0) {
        return IJSVGNodeTypeDef;
-    if ([string isEqualToString:@"g"])
+    }
+    if (strcmp(name, "g") == 0) {
        return IJSVGNodeTypeGroup;
-    if ([string isEqualToString:@"path"])
+    }
+    if (strcmp(name, "path") == 0) {
        return IJSVGNodeTypePath;
-    if ([string isEqualToString:@"polygon"])
+    }
+    if (strcmp(name, "polygon") == 0) {
        return IJSVGNodeTypePolygon;
-    if ([string isEqualToString:@"polyline"])
+    }
+    if (strcmp(name, "polyline") == 0) {
        return IJSVGNodeTypePolyline;
-    if ([string isEqualToString:@"rect"])
+    }
+    if (strcmp(name, "rect") == 0) {
        return IJSVGNodeTypeRect;
-    if ([string isEqualToString:@"line"])
+    }
+    if (strcmp(name, "line") == 0) {
        return IJSVGNodeTypeLine;
-    if ([string isEqualToString:@"circle"])
+    }
+    if (strcmp(name, "circle") == 0) {
        return IJSVGNodeTypeCircle;
-    if ([string isEqualToString:@"ellipse"])
+    }
+    if (strcmp(name, "ellipse") == 0) {
        return IJSVGNodeTypeEllipse;
-    if ([string isEqualToString:@"use"])
+    }
+    if (strcmp(name, "use") == 0) {
        return IJSVGNodeTypeUse;
-    if ([string isEqualToString:@"lineargradient"])
+    }
+    if (strcmp(name, "lineargradient") == 0) {
        return IJSVGNodeTypeLinearGradient;
-    if ([string isEqualToString:@"radialgradient"])
+    }
+    if (strcmp(name, "radialgradient") == 0) {
        return IJSVGNodeTypeRadialGradient;
-    if ([string isEqualToString:@"glyph"])
+    }
+    if(strcmp(name, "stop") == 0) {
+        return IJSVGNodeTypeStop;
+    }
+    if (strcmp(name, "glyph") == 0) {
        return IJSVGNodeTypeGlyph;
-    if ([string isEqualToString:@"font"])
+    }
+    if (strcmp(name, "font") == 0) {
        return IJSVGNodeTypeFont;
-    if ([string isEqualToString:@"clippath"])
+    }
+    if (strcmp(name, "clippath") == 0) {
        return IJSVGNodeTypeClipPath;
-    if ([string isEqualToString:@"mask"])
+    }
+    if (strcmp(name, "mask") == 0) {
        return IJSVGNodeTypeMask;
-    if ([string isEqualToString:@"image"])
+    }
+    if (strcmp(name, "image") == 0) {
        return IJSVGNodeTypeImage;
-    if ([string isEqualToString:@"pattern"])
+    }
+    if (strcmp(name, "pattern") == 0) {
        return IJSVGNodeTypePattern;
-    if ([string isEqualToString:@"svg"])
+    }
+    if (strcmp(name, "svg") == 0) {
        return IJSVGNodeTypeSVG;
-    if ([string isEqualToString:@"text"])
+    }
+    if (strcmp(name, "text") == 0) {
        return IJSVGNodeTypeText;
-    if ([string isEqualToString:@"tspan"] || kind == NSXMLTextKind) {
+    }
+    if (strcmp(name, "tspan") == 0 || kind == NSXMLTextKind) {
        return IJSVGNodeTypeTextSpan;
    }
-
-    // are we commong HTML? - if so just treat as a group
-    if (IJSVGIsCommonHTMLElementName(string) == YES) {
-        return IJSVGNodeTypeGroup;
+    if(strcmp(name, "title") == 0) {
+        return IJSVGNodeTypeTitle;
    }
+    if(strcmp(name, "desc") == 0) {
+        return IJSVGNodeTypeDesc;
+    }
+    return IJSVGNodeTypeUnknown;
+}

-    return IJSVGNodeTypeNotFound;
+ (void)walkNodeTree:(IJSVGNode*)node
+             handler:(IJSVGNodeWalkHandler)handler
+{
+    BOOL allowChildNodes = YES;
+    BOOL stop = NO;
+    [self _walkNodeTree:node
+                handler:handler
+        allowChildNodes:&allowChildNodes
+                   stop:&stop];
+}
+
+ (void)_walkNodeTree:(IJSVGNode*)node
+              handler:(IJSVGNodeWalkHandler)handler
+      allowChildNodes:(BOOL*)allowChildNodes
+                 stop:(BOOL*)stop
+{
+    // run the handler and instantly stop
+    // if stop is set
+    handler(node, allowChildNodes, stop);
+    if(*stop == YES) {
+        return;
+    }
+    
+    // child nodes only work for nodes
+    // that are type group
+    if(*allowChildNodes == NO ||
+       [node isKindOfClass:IJSVGGroup.class] == NO) {
+        *allowChildNodes = YES;
+        return;
+    }
+    
+    // iterate over the childnodes
+    IJSVGGroup* group = (IJSVGGroup*)node;
+    for(IJSVGNode* childNode in group.children) {
+        [self _walkNodeTree:childNode
+                    handler:handler
+            allowChildNodes:allowChildNodes
+                       stop:stop];
+        if(*stop == YES) {
+            return;
+        }
+    }
 }

 - (id)init
-{
-    if ((self = [self initWithDef:YES]) != nil) {
-        self.opacity = [IJSVGUnitLength unitWithFloat:1];
-    }
-    return self;
-}
-
- (void)applyPropertiesFromNode:(IJSVGNode*)node
-{
-    self.name = node.name;
-    self.type = node.type;
-    self.unicode = node.unicode;
-    self.className = node.className;
-    self.classNameList = node.classNameList;
-
-    self.x = node.x;
-    self.y = node.y;
-    self.width = node.width;
-    self.height = node.height;
-
-    self.fillGradient = node.fillGradient;
-    self.fillPattern = node.fillPattern;
-    self.strokeGradient = node.strokeGradient;
-    self.strokePattern = node.strokePattern;
-
-    self.fillColor = node.fillColor;
-    self.strokeColor = node.strokeColor;
-    self.clipPath = node.clipPath;
-
-    self.units = node.units;
-    self.contentUnits = node.contentUnits;
-
-    self.opacity = node.opacity;
-    self.strokeWidth = node.strokeWidth;
-    self.fillOpacity = node.fillOpacity;
-    self.strokeOpacity = node.strokeOpacity;
-
-    self.identifier = node.identifier;
-    self.usesDefaultFillColor = node.usesDefaultFillColor;
-
-    self.transforms = node.transforms;
-    self.def = node.def;
-    self.windingRule = node.windingRule;
-    self.lineCapStyle = node.lineCapStyle;
-    self.lineJoinStyle = node.lineJoinStyle;
-    self.parentNode = node.parentNode;
-
-    self.shouldRender = node.shouldRender;
-    self.blendMode = node.blendMode;
-
-    // dash array needs physical memory copied
-    CGFloat* nStrokeDashArray = (CGFloat*)malloc(node.strokeDashArrayCount * sizeof(CGFloat));
-    memcpy(self.strokeDashArray, nStrokeDashArray, node.strokeDashArrayCount * sizeof(CGFloat));
-    self.strokeDashArray = nStrokeDashArray;
-    self.strokeDashArrayCount = node.strokeDashArrayCount;
-    self.strokeDashOffset = node.strokeDashOffset;
-}
-
- (id)copyWithZone:(NSZone*)zone
-{
-    IJSVGNode* node = [self.class allocWithZone:zone];
-    [node applyPropertiesFromNode:self];
-    return node;
-}
-
- (id)initWithDef:(BOOL)flag
 {
    if ((self = [super init]) != nil) {
-        self.opacity = [IJSVGUnitLength unitWithFloat:0.f];
+        self.opacity = [IJSVGUnitLength unitWithFloat:1.f];
        self.fillOpacity = [IJSVGUnitLength unitWithFloat:1.f];
        self.fillOpacity.inherit = YES;

@@ -228,159 +203,246 @@
        self.lineCapStyle = IJSVGLineCapStyleInherit;
        self.lineJoinStyle = IJSVGLineJoinStyleInherit;
        self.units = IJSVGUnitInherit;
+        self.contentUnits = IJSVGUnitInherit;

        self.blendMode = IJSVGBlendModeNormal;
-
-        if (flag) {
-            def = [[IJSVGDef alloc] init];
-        }
+        self.overflowVisibility = IJSVGOverflowVisibilityVisible;
    }
    return self;
 }

- (IJSVGDef*)defForID:(NSString*)anID
+
+- (void)applyPropertiesFromNode:(IJSVGNode*)node
 {
-    IJSVGDef* aDef = nil;
-    if ((aDef = [def defForID:anID]) != nil) {
-        return aDef;
-    }
-    if (parentNode != nil) {
-        return [parentNode defForID:anID];
-    }
-    return nil;
+    self.title = node.title;
+    self.desc = node.desc;
+    
+    self.name = node.name;
+    self.type = node.type;
+    self.unicode = node.unicode;
+    self.className = node.className;
+    self.classNameList = node.classNameList;
+    
+    self.viewBox = node.viewBox;
+    self.viewBoxAlignment = node.viewBoxAlignment;
+    self.viewBoxMeetOrSlice = node.viewBoxMeetOrSlice;
+
+    self.x = node.x;
+    self.y = node.y;
+    self.width = node.width;
+    self.height = node.height;
+
+    self.fill = node.fill;
+    self.stroke = node.stroke;
+    self.clipPath = node.clipPath;
+
+    self.units = node.units;
+    self.contentUnits = node.contentUnits;
+
+    self.opacity = node.opacity;
+    self.strokeWidth = node.strokeWidth;
+    self.fillOpacity = node.fillOpacity;
+    self.strokeOpacity = node.strokeOpacity;
+
+    self.identifier = node.identifier;
+
+    self.transforms = node.transforms;
+    self.windingRule = node.windingRule;
+    self.lineCapStyle = node.lineCapStyle;
+    self.lineJoinStyle = node.lineJoinStyle;
+    self.parentNode = node.parentNode;
+
+    self.shouldRender = node.shouldRender;
+    self.blendMode = node.blendMode;
+    self.overflowVisibility = node.overflowVisibility;
+
+    // dash array needs physical memory copied
+    CGFloat* nStrokeDashArray = (CGFloat*)malloc(node.strokeDashArrayCount * sizeof(CGFloat));
+    memcpy(self.strokeDashArray, nStrokeDashArray, node.strokeDashArrayCount * sizeof(CGFloat));
+    self.strokeDashArray = nStrokeDashArray;
+    self.strokeDashArrayCount = node.strokeDashArrayCount;
+    self.strokeDashOffset = node.strokeDashOffset;
 }

- (void)addDef:(IJSVGNode*)aDef
+- (id)copyWithZone:(NSZone*)zone
 {
-    [def addDef:aDef];
+    IJSVGNode* node = [self.class allocWithZone:zone];
+    [node applyPropertiesFromNode:self];
+    return node;
+}
+
+- (void)setFill:(IJSVGNode*)fill
+{
+    NSAssert([fill matchesTraits:IJSVGNodeTraitPaintable] || fill == nil, @"Fill must a paintable node.");
+    (void)[_fill release], _fill = nil;
+    _fill = [fill retain];
+}
+
+- (void)setStroke:(IJSVGNode*)stroke
+{
+    NSAssert([stroke matchesTraits:IJSVGNodeTraitPaintable]|| stroke == nil, @"Stroke must be a paintable node.");
+    (void)[_stroke release], _stroke = nil;
+    _stroke = [stroke retain];
 }

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

 - (IJSVGLineCapStyle)lineCapStyle
 {
-    if (lineCapStyle == IJSVGLineCapStyleInherit) {
-        if (parentNode != nil) {
-            return parentNode.lineCapStyle;
+    if (_lineCapStyle == IJSVGLineCapStyleInherit) {
+        if (_parentNode != nil) {
+            return _parentNode.lineCapStyle;
        }
    }
-    return lineCapStyle;
+    return _lineCapStyle;
 }

 - (IJSVGLineJoinStyle)lineJoinStyle
 {
-    if (lineJoinStyle == IJSVGLineJoinStyleInherit) {
-        if (parentNode != nil) {
-            return parentNode.lineJoinStyle;
+    if (_lineJoinStyle == IJSVGLineJoinStyleInherit) {
+        if (_parentNode != nil) {
+            return _parentNode.lineJoinStyle;
        }
    }
-    return lineJoinStyle;
+    return _lineJoinStyle;
 }

 // these are all recursive, so go up the chain
 // if they dont exist on this specific node
 - (IJSVGUnitLength*)opacity
 {
-    if (opacity.inherit && parentNode != nil) {
-        return parentNode.opacity;
+    if (_opacity.inherit && _parentNode != nil) {
+        return _parentNode.opacity;
    }
-    return opacity;
+    return _opacity;
 }

 // these are all recursive, so go up the chain
 // if they dont exist on this specific node
 - (IJSVGUnitLength*)fillOpacity
 {
-    if (fillOpacity.inherit && parentNode != nil) {
-        return parentNode.fillOpacity;
+    if (_fillOpacity.inherit && _parentNode != nil) {
+        return _parentNode.fillOpacity;
    }
-    return fillOpacity;
+    return _fillOpacity;
 }

 // these are all recursive, so go up the chain
 // if they dont exist on this specific node
 - (IJSVGUnitLength*)strokeWidth
 {
-    if (strokeWidth.inherit && parentNode != nil) {
-        return parentNode.strokeWidth;
+    if (_strokeWidth.inherit && _parentNode != nil) {
+        return _parentNode.strokeWidth;
    }
-    return strokeWidth;
+    return _strokeWidth;
+}
+
+- (NSArray<NSNumber*>*)lineDashPattern
+{
+    NSMutableArray* arr = [[[NSMutableArray alloc] initWithCapacity:self.strokeDashArrayCount] autorelease];
+    for (NSInteger i = 0; i < self.strokeDashArrayCount; i++) {
+        [arr addObject:@((CGFloat)self.strokeDashArray[i])];
+    }
+    return arr;
 }

 // these are all recursive, so go up the chain
 // if they dont exist on this specific node
- (NSColor*)strokeColor
+- (IJSVGNode*)stroke
 {
-    if (strokeColor != nil)
-        return strokeColor;
-    if (strokeColor == nil && parentNode != nil)
-        return parentNode.strokeColor;
-    return nil;
+    if (_stroke == nil && _parentNode != nil) {
+        return _parentNode.stroke;
+    }
+    return _stroke;
 }

 - (IJSVGUnitLength*)strokeOpacity
 {
-    if (strokeOpacity.inherit && parentNode != nil) {
-        return parentNode.strokeOpacity;
+    if (_strokeOpacity.inherit && _parentNode != nil) {
+        return _parentNode.strokeOpacity;
    }
-    return strokeOpacity;
+    return _strokeOpacity;
 }

 // even though the spec explicity states fill color
 // must be on the path, it can also be on the
- (NSColor*)fillColor
+- (IJSVGNode*)fill
 {
-    if (fillColor == nil && parentNode != nil) {
-        return parentNode.fillColor;
+    if (_fill == nil && _parentNode != nil) {
+        return _parentNode.fill;
    }
-    return fillColor;
+    return _fill;
 }

-// these are all recursive, so go up the chain
-// if they dont exist on this specific node
- (IJSVGGradient*)fillGradient
+- (IJSVGUnitType)units
 {
-    if (fillGradient == nil && parentNode != nil) {
-        return parentNode.fillGradient;
+    if(_units == IJSVGUnitInherit && _parentNode != nil) {
+        return _parentNode.units;
    }
-    return fillGradient;
+    return _units;
 }

-// these are all recursive, so go up the chain
-// if they dont exist on this specific node
- (IJSVGPattern*)fillPattern
+- (IJSVGUnitType)contentUnits
 {
-    if (fillPattern == nil && parentNode != nil) {
-        return parentNode.fillPattern;
+    if(_contentUnits == IJSVGUnitInherit && _parentNode != nil) {
+        return _parentNode.contentUnits;
    }
-    return fillPattern;
+    return _contentUnits;
 }

-// these are all recursive, so go up the chain
-// if they dont exist on this specific node
- (IJSVGGradient*)strokeGradient
+- (IJSVGUnitType)contentUnitsWithReferencingNodeBounds:(CGRect*)bounds
 {
-    if (strokeGradient == nil && parentNode != nil) {
-        return parentNode.strokeGradient;
-    }
-    return strokeGradient;
+    IJSVGNode* node = nil;
+    IJSVGUnitType type = [self contentUnitsWithReferencingNode:&node];
+    *bounds = node.parentNode.bounds;
+    return type;
 }

-// these are all recursive, so go up the chain
-// if they dont exist on this specific node
- (IJSVGPattern*)strokePattern
+- (IJSVGUnitType)contentUnitsWithReferencingNode:(IJSVGNode**)referencingNode
 {
-    if (strokePattern == nil && parentNode != nil) {
-        return parentNode.strokePattern;
+    if(_contentUnits == IJSVGUnitInherit && _parentNode != nil) {
+        return [_parentNode contentUnitsWithReferencingNode:referencingNode];
    }
-    return strokePattern;
+    *referencingNode = self;
+    return _contentUnits;
+}
+
+- (void)addTraits:(IJSVGNodeTraits)traits
+{
+    _traits |= traits;
+}
+
+- (void)removeTraits:(IJSVGNodeTraits)traits
+{
+    _traits = _traits & ~traits;
+}
+
+- (BOOL)matchesTraits:(IJSVGNodeTraits)traits
+{
+    return (_traits & traits) == traits;
+}
+
+- (void)computeTraits
+{
+    // by default this does nothing
+}
+
+- (instancetype)detach
+{
+    self.parentNode = nil;
+    return self;
+}
+
+- (NSString *)description
+{
+    return [NSString stringWithFormat:@"%@ %@ %@",self.name,self.classNameList,self.identifier];
 }

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

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

@class IJSVGGroup;
@@ -23,15 +23,13 @@ typedef NS_ENUM(NSInteger, IJSVGPrimitivePathType) {
 };

@interface IJSVGPath : IJSVGNode {
-
-    NSBezierPath* path;
-    CGPoint lastControlPoint;
 }

@property (nonatomic, assign) IJSVGPrimitivePathType primitiveType;
-@property (nonatomic, retain) NSBezierPath* path;
+@property (nonatomic, assign) CGMutablePathRef path;
@property (nonatomic, assign) CGPoint lastControlPoint;
-@property (nonatomic, readonly) CGPathRef CGPath;
+@property (nonatomic, readonly) CGRect controlPointBoundingBox;
+@property (nonatomic, readonly) CGRect pathBoundingBox;

 - (void)close;
 - (NSPoint)currentPoint;
@@ -6,23 +6,15 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

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

@implementation IJSVGPath

-@synthesize path = _path;
-@synthesize lastControlPoint;
-@synthesize CGPath = _CGPath;
-@synthesize primitiveType = _primitiveType;
-
 - (void)dealloc
 {
-    if (_CGPath != nil) {
-        CGPathRelease(_CGPath);
-        _CGPath = nil;
+    if(_path != NULL) {
+        (void)CGPathRelease(_path), _path = NULL;
    }
-    ((void)[_path release]), _path = nil;
    [super dealloc];
 }

@@ -30,42 +22,70 @@
 {
    if ((self = [super init]) != nil) {
        _primitiveType = kIJSVGPrimitivePathTypePath;
-        _path = NSBezierPath.bezierPath.retain;
+        _path = CGPathCreateMutable();
    }
    return self;
 }

+- (CGRect)bounds
+{
+    return self.pathBoundingBox;
+}
+
 - (id)copyWithZone:(NSZone*)zone
 {
    IJSVGPath* node = [super copyWithZone:zone];
-    node.path = [self.path.copy autorelease];
+    node.path = _path;
    return node;
 }

+- (void)setPath:(CGMutablePathRef)path
+{
+    // this will automatically copy any path into a mutable path
+    // regardless of if it was a mutable path to begin with
+    if(_path != NULL) {
+        (void)CGPathRelease(_path), _path = NULL;
+    }
+    _path = CGPathCreateMutableCopy(path);
+}
+
+- (CGRect)pathBoundingBox
+{
+    return CGPathGetPathBoundingBox(_path);
+}
+
+- (CGRect)controlPointBoundingBox
+{
+    return CGPathGetBoundingBox(_path);
+}
+
 - (NSPoint)currentPoint
 {
-    return _path.currentPoint;
+    return CGPathGetCurrentPoint(_path);
 }

 - (void)close
 {
-    [_path closePath];
+    CGPathCloseSubpath(_path);
 }

- (void)invlidateCGPath
-{
-    if (_CGPath != nil) {
-        CGPathRelease(_CGPath);
-    }
-    _CGPath = nil;
-}
+#pragma mark Traits

- (CGPathRef)CGPath
+- (void)computeTraits
 {
-    if (_CGPath == nil) {
-        _CGPath = [_path newCGPathRef:NO];
+    if(self.stroke != nil) {
+        // by default we can just add this on
+        [self addTraits:IJSVGNodeTraitStroked];
+        
+        // if we detect the stroke was a color, we need to check its alpha
+        // component to then remove the trait if its 0.f
+        if([self.stroke isKindOfClass:IJSVGColorNode.class] == YES) {
+            IJSVGColorNode* strokeColor = (IJSVGColorNode*)self.stroke;
+            if(strokeColor.color.alphaComponent == 0.f) {
+                [self removeTraits:IJSVGNodeTraitStroked];
+            }
+        }
    }
-    return _CGPath;
 }

@end
@@ -6,11 +6,12 @@
 //  Copyright © 2016 Curtis Hard. All rights reserved.
 //

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

@interface IJSVGPattern : IJSVGGroup {
+
 }

@end
@@ -7,7 +7,19 @@
 //

 #import "IJSVGPattern.h"
+#import "IJSVGUnitRect.h"

@implementation IJSVGPattern

+- (instancetype)init
+{
+    if((self = [super init]) != nil) {
+        self.viewBox = nil;
+        self.viewBoxAlignment = IJSVGViewBoxAlignmentXMidYMid;
+        self.viewBoxMeetOrSlice = IJSVGViewBoxMeetOrSliceMeet;
+    }
+    return self;
+}
+
+
@end
@@ -6,7 +6,7 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

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

@interface IJSVGRadialGradient : IJSVGGradient
@@ -15,7 +15,8 @@
@property (nonatomic, retain) IJSVGUnitLength* cy;
@property (nonatomic, retain) IJSVGUnitLength* fx;
@property (nonatomic, retain) IJSVGUnitLength* fy;
-@property (nonatomic, retain) IJSVGUnitLength* radius;
+@property (nonatomic, retain) IJSVGUnitLength* fr;
+@property (nonatomic, retain) IJSVGUnitLength* r;

 + (NSGradient*)parseGradient:(NSXMLElement*)element
                    gradient:(IJSVGRadialGradient*)gradient;
@@ -0,0 +1,185 @@
+//
+//  IJSVGRadialGradient.m
+//  IJSVGExample
+//
+//  Created by Curtis Hard on 03/09/2014.
+//  Copyright (c) 2014 Curtis Hard. All rights reserved.
+//
+
+#import <IJSVG/IJSVGRadialGradient.h>
+#import <IJSVG/IJSVGParser.h>
+
+@implementation IJSVGRadialGradient
+
+- (void)dealloc
+{
+    (void)([_cx release]), _cx = nil;
+    (void)([_cy release]), _cy = nil;
+    (void)([_fx release]), _fx = nil;
+    (void)([_fy release]), _fy = nil;
+    (void)([_fr release]), _fr = nil;
+    (void)([_r release]), _r = nil;
+    [super dealloc];
+}
+
+- (id)copyWithZone:(NSZone*)zone
+{
+    IJSVGRadialGradient* grad = [super copyWithZone:zone];
+    grad.fx = _fx;
+    grad.fy = _fy;
+    grad.fr = _fr;
+    grad.cx = _cx;
+    grad.cy = _cy;
+    grad.r = _r;
+    return grad;
+}
+
+ (NSGradient*)parseGradient:(NSXMLElement*)element
+                    gradient:(IJSVGRadialGradient*)gradient
+{
+    // cx defaults to 50% if not specified
+    NSDictionary* kv = @{
+        IJSVGAttributeCX : @"cx",
+        IJSVGAttributeCY : @"cy",
+        IJSVGAttributeR : @"r" };
+
+    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]];
+    }
+    
+    // fr
+    NSString* fr = [element attributeForName:IJSVGAttributeFR].stringValue;
+    if(fr != nil) {
+        gradient.fr = [IJSVGUnitLength unitWithString:fr
+                                         fromUnitType:gradient.units];
+    } else {
+        gradient.fr = [IJSVGUnitLength unitWithPercentageFloat:0.f];
+    }
+
+    // fx and fy are the same unless specified otherwise
+    gradient.fx = gradient.cx;
+    gradient.fy = gradient.cy;
+
+    // needs fixing
+    NSString* fx = [element attributeForName:IJSVGAttributeFX].stringValue;
+    if (fx != nil) {
+        gradient.fx = [IJSVGUnitLength unitWithString:fx
+                                         fromUnitType:gradient.units];
+    }
+
+    NSString* fy = [element attributeForName:IJSVGAttributeFY].stringValue;
+    if (fy != nil) {
+        gradient.fy = [IJSVGUnitLength unitWithString:fy
+                                         fromUnitType:gradient.units];
+    }
+
+    if (gradient.gradient != nil) {
+        return nil;
+    }
+
+    NSArray* colors = nil;
+    CGFloat* colorStops = [self.class computeColorStops:gradient
+                                                 colors:&colors];
+    
+    NSGradient* ret = [[[NSGradient alloc] initWithColors:colors
+                                              atLocations:colorStops
+                                               colorSpace:IJSVGColor.defaultColorSpace] autorelease];
+    free(colorStops);
+    return ret;
+}
+
+- (void)drawInContextRef:(CGContextRef)ctx
+              objectRect:(NSRect)objectRect
+       absoluteTransform:(CGAffineTransform)absoluteTransform
+                viewPort:(CGRect)viewBox
+{
+    CGContextSaveGState(ctx);
+    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;
+    
+    // compute size based on percentages
+    CGFloat width = CGRectGetWidth(boundingBox);
+    CGFloat height = CGRectGetHeight(boundingBox);
+    CGFloat cx = [_cx computeValue:width];
+    CGFloat cy = [_cy computeValue:height];
+    startPoint = CGPointMake(cx, cy);
+    CGFloat val = MIN(width, height);
+    radius = [_r computeValue:val];
+    CGFloat focalRadius = [_fr computeValue:val];
+
+    CGFloat fx = [_fx computeValue:width];
+    CGFloat fy = [_fy computeValue:height];
+
+    gradientEndPoint = CGPointMake(fx, fy);
+    gradientStartPoint = startPoint;
+
+    // transform if width or height is not equal - this can only
+    // be done if we are using objectBoundingBox
+    if(inUserSpace == YES) {
+        CGFloat rad = 2.f * radius;
+        CGRect rect = CGRectMake(startPoint.x, startPoint.y, rad, rad);
+        rect = CGRectApplyAffineTransform(rect, selfTransform);
+        rect = CGRectApplyAffineTransform(rect, absoluteTransform);
+        radius = CGRectGetHeight(rect) / 2.f;
+        CGContextConcatCTM(ctx, absoluteTransform);
+    } else if(width != height) {
+        CGAffineTransform transform = CGAffineTransformIdentity;
+        CGAffineTransform invert = CGAffineTransformIdentity;
+        CGPoint invPoint = CGPointZero;
+        CGFloat* radiusScale;
+        if(width > height) {
+            transform = CGAffineTransformMakeScale(1.f, height / width);
+            radiusScale = &invPoint.y;
+        } else {
+            transform = CGAffineTransformMakeScale(width / height, 1.f);
+            radiusScale = &invPoint.x;
+        }
+        invert = CGAffineTransformInvert(transform);
+        invPoint.x = invert.a;
+        invPoint.y = invert.d;
+        gradientStartPoint.x *= invPoint.x;
+        gradientStartPoint.y *= invPoint.y;
+        gradientEndPoint.x *= invPoint.x;
+        gradientEndPoint.y *= invPoint.y;
+        radius *= *radiusScale;
+        focalRadius *= *radiusScale;
+        selfTransform = CGAffineTransformConcat(transform, selfTransform);
+    }
+    
+    // transform the context
+    CGContextConcatCTM(ctx, selfTransform);
+
+    // draw the gradient
+    CGGradientDrawingOptions options = kCGGradientDrawsBeforeStartLocation | kCGGradientDrawsAfterEndLocation;
+    CGContextDrawRadialGradient(ctx, self.CGGradient,
+        gradientEndPoint, focalRadius,
+        gradientStartPoint,
+        radius, options);
+    CGContextRestoreGState(ctx);
+
+//#ifdef IJSVG_DEBUG_GRADIENTS
+//    [self _debugStart:gradientStartPoint
+//                  end:gradientEndPoint
+//              context:ctx];
+//#endif
+}
+
+@end
@@ -0,0 +1,18 @@
+//
+//  IJSVGRootNode.h
+//  IJSVG
+//
+//  Created by Curtis Hard on 28/03/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import <IJSVG/IJSVG.h>
+#import <IJSVG/IJSVGGroup.h>
+#import <IJSVG/IJSVGUnitSize.h>
+
+@interface IJSVGRootNode : IJSVGGroup
+
+@property (nonatomic, retain) IJSVGUnitSize* intrinsicSize;
+@property (nonatomic, readonly) CGRect bounds;
+
+@end
@@ -0,0 +1,33 @@
+//
+//  IJSVGRootNode.m
+//  IJSVG
+//
+//  Created by Curtis Hard on 28/03/2022.
+//  Copyright © 2022 Curtis Hard. All rights reserved.
+//
+
+#import "IJSVGRootNode.h"
+
+@implementation IJSVGRootNode
+
+- (void)dealloc
+{
+    (void)[_intrinsicSize release], _intrinsicSize = nil;
+    [super dealloc];
+}
+
+- (instancetype)init
+{
+    if((self = [super init]) != nil) {
+        self.viewBoxAlignment = IJSVGViewBoxAlignmentXMidYMid;
+        self.viewBoxMeetOrSlice = IJSVGViewBoxMeetOrSliceMeet;
+    }
+    return self;
+}
+
+- (CGRect)bounds
+{
+    return [self.viewBox computeValue:CGSizeZero];
+}
+
+@end
@@ -6,11 +6,9 @@
 //  Copyright © 2017 Curtis Hard. All rights reserved.
 //

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

@interface IJSVGText : IJSVGGroup {
-
-    NSString* text;
 }

@property (nonatomic, copy) NSString* text;
@@ -10,18 +10,16 @@

@implementation IJSVGText

-@synthesize text;
-
 - (void)dealloc
 {
-    (void)([text release]), text = nil;
+    (void)([_text release]), _text = nil;
    [super dealloc];
 }

 - (IJSVGText*)copyWithZone:(NSZone*)zone
 {
    IJSVGText* node = [super copyWithZone:zone];
-    node.text = self.text;
+    node.text = _text;
    return node;
 }

@@ -6,108 +6,106 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

-#import "IJSVGColor.h"
-#import "IJSVGCommand.h"
-#import "IJSVGDef.h"
-#import "IJSVGError.h"
-#import "IJSVGForeignObject.h"
-#import "IJSVGGroup.h"
-#import "IJSVGImage.h"
-#import "IJSVGLinearGradient.h"
-#import "IJSVGPath.h"
-#import "IJSVGPattern.h"
-#import "IJSVGRadialGradient.h"
-#import "IJSVGStyleSheet.h"
-#import "IJSVGText.h"
-#import "IJSVGTransform.h"
-#import "IJSVGUtils.h"
+#import <IJSVG/IJSVGColor.h>
+#import <IJSVG/IJSVGCommand.h>
+#import <IJSVG/IJSVGDef.h>
+#import <IJSVG/IJSVGError.h>
+#import <IJSVG/IJSVGForeignObject.h>
+#import <IJSVG/IJSVGGroup.h>
+#import <IJSVG/IJSVGColorNode.h>
+#import <IJSVG/IJSVGImage.h>
+#import <IJSVG/IJSVGLinearGradient.h>
+#import <IJSVG/IJSVGPath.h>
+#import <IJSVG/IJSVGPattern.h>
+#import <IJSVG/IJSVGRadialGradient.h>
+#import <IJSVG/IJSVGStyleSheet.h>
+#import <IJSVG/IJSVGText.h>
+#import <IJSVG/IJSVGTransform.h>
+#import <IJSVG/IJSVGUnitRect.h>
+#import <IJSVG/IJSVGUtils.h>
 #import <AppKit/AppKit.h>
 #import <Foundation/Foundation.h>

-static NSString const* IJSVGAttributeViewBox = @"viewBox";
-static NSString const* IJSVGAttributeID = @"id";
-static NSString const* IJSVGAttributeClass = @"class";
-static NSString const* IJSVGAttributeX = @"x";
-static NSString const* IJSVGAttributeY = @"y";
-static NSString const* IJSVGAttributeWidth = @"width";
-static NSString const* IJSVGAttributeHeight = @"height";
-static NSString const* IJSVGAttributeOpacity = @"opacity";
-static NSString const* IJSVGAttributeStrokeOpacity = @"stroke-opacity";
-static NSString const* IJSVGAttributeStrokeWidth = @"stroke-width";
-static NSString const* IJSVGAttributeStrokeDashOffset = @"stroke-dashoffset";
-static NSString const* IJSVGAttributeFillOpacity = @"fill-opacity";
-static NSString const* IJSVGAttributeClipPath = @"clip-path";
-static NSString const* IJSVGAttributeMask = @"mask";
-static NSString const* IJSVGAttributeGradientUnits = @"gradientUnits";
-static NSString const* IJSVGAttributeMaskUnits = @"maskUnits";
-static NSString const* IJSVGAttributeMaskContentUnits = @"maskContentUnits";
-static NSString const* IJSVGAttributeTransform = @"transform";
-static NSString const* IJSVGAttributeGradientTransform = @"gradientTransform";
-static NSString const* IJSVGAttributeUnicode = @"unicode";
-static NSString const* IJSVGAttributeStrokeLineCap = @"stroke-linecap";
-static NSString const* IJSVGAttributeLineJoin = @"stroke-linejoin";
-static NSString const* IJSVGAttributeStroke = @"stroke";
-static NSString const* IJSVGAttributeStrokeDashArray = @"stroke-dasharray";
-static NSString const* IJSVGAttributeFill = @"fill";
-static NSString const* IJSVGAttributeFillRule = @"fill-rule";
-static NSString const* IJSVGAttributeBlendMode = @"mix-blend-mode";
-static NSString const* IJSVGAttributeDisplay = @"display";
-static NSString const* IJSVGAttributeStyle = @"style";
-static NSString const* IJSVGAttributeD = @"d";
-static NSString const* IJSVGAttributeXLink = @"xlink:href";
-static NSString const* IJSVGAttributeX1 = @"x1";
-static NSString const* IJSVGAttributeX2 = @"x2";
-static NSString const* IJSVGAttributeY1 = @"y1";
-static NSString const* IJSVGAttributeY2 = @"y2";
-static NSString const* IJSVGAttributeRX = @"rx";
-static NSString const* IJSVGAttributeRY = @"ry";
-static NSString const* IJSVGAttributeCX = @"cx";
-static NSString const* IJSVGAttributeCY = @"cy";
-static NSString const* IJSVGAttributeR = @"r";
-static NSString const* IJSVGAttributePoints = @"points";
+extern NSString* const IJSVGAttributeViewBox;
+extern NSString* const IJSVGAttributePreserveAspectRatio;
+extern NSString* const IJSVGAttributeID;
+extern NSString* const IJSVGAttributeClass;
+extern NSString* const IJSVGAttributeX;
+extern NSString* const IJSVGAttributeY;
+extern NSString* const IJSVGAttributeWidth;
+extern NSString* const IJSVGAttributeHeight;
+extern NSString* const IJSVGAttributeOpacity;
+extern NSString* const IJSVGAttributeStrokeOpacity;
+extern NSString* const IJSVGAttributeStrokeWidth;
+extern NSString* const IJSVGAttributeStrokeDashOffset;
+extern NSString* const IJSVGAttributeFillOpacity;
+extern NSString* const IJSVGAttributeClipPath;
+extern NSString* const IJSVGAttributeMask;
+extern NSString* const IJSVGAttributeGradientUnits;
+extern NSString* const IJSVGAttributePatternContentUnits;
+extern NSString* const IJSVGAttributeMaskUnits;
+extern NSString* const IJSVGAttributeMaskContentUnits;
+extern NSString* const IJSVGAttributeTransform;
+extern NSString* const IJSVGAttributeGradientTransform;
+extern NSString* const IJSVGAttributeUnicode;
+extern NSString* const IJSVGAttributeStrokeLineCap;
+extern NSString* const IJSVGAttributeLineJoin;
+extern NSString* const IJSVGAttributeStroke;
+extern NSString* const IJSVGAttributeStrokeDashArray;
+extern NSString* const IJSVGAttributeFill;
+extern NSString* const IJSVGAttributeFillRule;
+extern NSString* const IJSVGAttributeBlendMode;
+extern NSString* const IJSVGAttributeDisplay;
+extern NSString* const IJSVGAttributeStyle;
+extern NSString* const IJSVGAttributeD;
+extern NSString* const IJSVGAttributeXLink;
+extern NSString* const IJSVGAttributeX1;
+extern NSString* const IJSVGAttributeX2;
+extern NSString* const IJSVGAttributeY1;
+extern NSString* const IJSVGAttributeY2;
+extern NSString* const IJSVGAttributeRX;
+extern NSString* const IJSVGAttributeRY;
+extern NSString* const IJSVGAttributeCX;
+extern NSString* const IJSVGAttributeCY;
+extern NSString* const IJSVGAttributeR;
+extern NSString* const IJSVGAttributeFR;
+extern NSString* const IJSVGAttributeFX;
+extern NSString* const IJSVGAttributeFY;
+extern NSString* const IJSVGAttributePoints;
+extern NSString* const IJSVGAttributeOffset;
+extern NSString* const IJSVGAttributeStopColor;
+extern NSString* const IJSVGAttributeStopOpacity;
+extern NSString* const IJSVGAttributeHref;
+extern NSString* const IJSVGAttributeOverflow;
+

@class IJSVGParser;

@protocol IJSVGParserDelegate <NSObject>

@optional
- (BOOL)svgParser:(IJSVGParser*)svg
-    shouldHandleForeignObject:(IJSVGForeignObject*)foreignObject;
- (void)svgParser:(IJSVGParser*)svg
-    handleForeignObject:(IJSVGForeignObject*)foreignObject
-               document:(NSXMLDocument*)document;
 - (void)svgParser:(IJSVGParser*)svg
      foundSubSVG:(IJSVG*)subSVG
    withSVGString:(NSString*)string;

@end

-@interface IJSVGParser : IJSVGGroup {
-
-    NSRect viewBox;
-    NSSize proposedViewSize;
+@interface IJSVGParser : NSObject {

@private
    id<IJSVGParserDelegate> _delegate;
    NSXMLDocument* _document;
-    NSMutableArray* _glyphs;
-    IJSVGStyleSheet* _styleSheet;
-    NSMutableArray* _parsedNodes;
-    NSMutableDictionary* _defNodes;
-    NSMutableDictionary* _baseDefNodes;
-    NSMutableArray<IJSVG*>* _svgs;

    struct {
-        unsigned int shouldHandleForeignObject : 1;
-        unsigned int handleForeignObject : 1;
        unsigned int handleSubSVG : 1;
    } _respondsTo;

    IJSVGPathDataStream* _commandDataStream;
+    IJSVGStyleSheet* _styleSheet;
+    NSMapTable<IJSVGNode*, NSMutableDictionary<NSString*, NSXMLElement*>*>* _detachedElements;
 }

-@property (nonatomic, readonly) NSRect viewBox;
-@property (nonatomic, readonly) NSSize proposedViewSize;
+@property (nonatomic, retain, readonly) IJSVGRootNode* rootNode;

 + (BOOL)isDataSVG:(NSData*)data;

@@ -124,9 +122,5 @@ static NSString const* IJSVGAttributePoints = @"points";
 + (IJSVGParser*)groupForFileURL:(NSURL*)aURL
                          error:(NSError**)error
                       delegate:(id<IJSVGParserDelegate>)delegate;
- (NSSize)size;
- (BOOL)isFont;
- (NSArray*)glyphs;
- (NSArray<IJSVG*>*)subSVGs:(BOOL)recursive;

@end
@@ -6,18 +6,25 @@
 //  Copyright © 2016 Curtis Hard. All rights reserved.
 //

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

@class IJSVGLayer;
+@class IJSVGRootLayer;
+@class IJSVGRootNode;

@interface IJSVGLayerTree : NSObject {
+@private
+    NSMutableArray<NSValue*>* _viewPortStack;
 }

@property (nonatomic, assign) CGRect viewBox;
+@property (nonatomic, assign) CGFloat backingScale;
@property (nonatomic, retain) IJSVGRenderingStyle* style;

- (IJSVGLayer*)layerForNode:(IJSVGNode*)node;
+- (id)initWithViewPortRect:(CGRect)viewPort
+              backingScale:(CGFloat)scale;
+- (IJSVGRootLayer*)rootLayerForRootNode:(IJSVGRootNode*)rootNode;

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

-#import "IJSVGColorList.h"
-#import "IJSVGNode.h"
+#import <IJSVG/IJSVGColorList.h>
+#import <IJSVG/IJSVGNode.h>
 #import <AppKit/AppKit.h>
 #import <Foundation/Foundation.h>
 #import <objc/runtime.h>
@@ -10,13 +10,6 @@

@implementation IJSVGRenderingStyle

-@synthesize colorList = _colorList;
-@synthesize lineCapStyle = _lineCapStyle;
-@synthesize lineJoinStyle = _lineJoinStyle;
-@synthesize lineWidth = _lineWidth;
-@synthesize fillColor = _fillColor;
-@synthesize strokeColor = _strokeColor;
-
 - (void)dealloc
 {
    (void)([_fillColor release]), _fillColor = nil;
@@ -6,7 +6,7 @@
 //  Copyright (c) 2014 Curtis Hard. All rights reserved.
 //

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

@interface IJSVGStyle : NSObject {
@@ -91,7 +91,7 @@

 + (NSArray*)allowedColourKeys
 {
-    return @[ @"fill", @"stroke-colour", @"stop-color", @"stroke" ];
+    return @[ @"fill", @"stroke-color", @"stop-color", @"stroke" ];
 }

 - (void)setProperties:(NSDictionary*)properties
@@ -6,8 +6,8 @@
 //  Copyright © 2016 Curtis Hard. All rights reserved.
 //

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

@class IJSVGNode;
@@ -11,9 +11,6 @@
 #import "IJSVGStyleSheet.h"

@interface IJSVGStyleSheetSelectorListItem : NSObject {
-
-    IJSVGStyleSheetSelector* selector;
-    IJSVGStyleSheetRule* rule;
 }

@property (nonatomic, retain) IJSVGStyleSheetRule* rule;
@@ -23,12 +20,11 @@

@implementation IJSVGStyleSheetSelectorListItem

-@synthesize rule, selector;

 - (void)dealloc
 {
-    (void)([rule release]), rule = nil;
-    (void)([selector release]), selector = nil;
+    (void)([_rule release]), _rule = nil;
+    (void)([_selector release]), _selector = nil;
    [super dealloc];
 }

@@ -6,16 +6,13 @@
 //  Copyright © 2016 Curtis Hard. All rights reserved.
 //

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

@class IJSVGNode;

@interface IJSVGStyleSheetRule : NSObject {
-
-    NSArray* selectors;
-    IJSVGStyle* style;
 }

@property (nonatomic, retain) NSArray* selectors;
@@ -10,12 +10,10 @@

@implementation IJSVGStyleSheetRule

-@synthesize selectors, style;
-
 - (void)dealloc
 {
-    (void)([selectors release]), selectors = nil;
-    (void)([style release]), style = nil;
+    (void)([_selectors release]), _selectors = nil;
+    (void)([_style release]), _style = nil;
    [super dealloc];
 }

@@ -24,7 +22,7 @@
 {
    // interate over each select and work out if
    // it allows us to be applied
-    for (IJSVGStyleSheetSelector* selector in selectors) {
+    for (IJSVGStyleSheetSelector* selector in _selectors) {
        if ([selector matchesNode:node]) {
            *matchedSelector = selector;
            return YES;
@@ -6,7 +6,7 @@
 //  Copyright © 2016 Curtis Hard. All rights reserved.
 //

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

@class IJSVGNode;
@@ -14,7 +14,7 @@
@interface IJSVGStyleSheetSelector : NSObject {

    NSString* selector;
-    NSUInteger specificity;
+    
@private
    NSMutableArray* _rawSelectors;
 }
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Curtis Hard	050df84672	Adds isNoneOrTransparent to COlor	2022-04-19 18:11:02 +01:00
Curtis Hard	ac61d3d6d6	Adds image generation to IJSVGLayer	2022-04-18 17:32:20 +01:00
Curtis Hard	fdde1fd5f6	Fixes transforms and masking	2022-04-18 14:45:24 +01:00
Curtis Hard	fe179076cc	More fixes	2022-04-18 11:45:04 +01:00
Curtis Hard	01dd0d25d2	Make sure the node actually exists	2022-04-17 17:57:52 +01:00
Curtis Hard	799593d7d8	Removed log	2022-04-17 17:57:09 +01:00
Curtis Hard	0c7cfd776c	Fixes stylesheets	2022-04-17 17:57:01 +01:00
Curtis Hard	757c4317d3	Adds better rendering calls into SVG	2022-04-17 12:45:44 +01:00
Curtis Hard	1727505968	Removed IJSVG_DRAWABLE_LAYER	2022-04-17 11:58:49 +01:00
Curtis Hard	775c28e91a	Updated example and added better support for ratios	2022-04-16 17:50:57 +01:00
Curtis Hard	ec539a12b3	More alignment stuff	2022-04-16 13:51:33 +01:00
Curtis Hard	43210c018e	Fixes strokes with layer of constant fill color - started to out viewboxes	2022-04-15 21:10:48 +01:00
Curtis Hard	3773e10f44	Fixes strokes, some patterns, changes how we parse commands ready for units	2022-04-13 21:20:53 +01:00
Curtis Hard	51fb9cc871	added referencing layers into layer tree	2022-04-12 20:00:58 +01:00
Curtis Hard	be08ada5da	Fixes gradients	2022-04-11 10:14:08 +01:00
Curtis Hard	a3a6ee5a05	Fixes absolute transform and gradients	2022-04-08 21:56:03 +01:00
Curtis Hard	cccfc0db68	Various fixes	2022-04-07 15:36:33 +01:00
Curtis Hard	19db898bdd	More gradient things that dont work	2022-04-03 20:05:58 +01:00
Curtis Hard	8abbdf390a	Continue of refactor	2022-04-02 13:51:47 +01:00
Curtis Hard	6e98e2cfed	Removes useless properties	2022-03-31 13:36:53 +01:00
Curtis Hard	2c536a8962	Adds .children and improvements to addChild/removeChild	2022-03-30 19:52:30 +01:00
Curtis Hard	65a8c0a691	Proper clip path	2022-03-30 15:26:32 +01:00
Curtis Hard	2942cc0a58	Added IJSVGColorNode and traits	2022-03-29 20:12:53 +01:00
Curtis Hard	ba7a05553e	Adds frame calculations onto group	2022-03-29 11:37:28 +01:00
Curtis Hard	c9a7788d98	Added correctly nested detached nodes	2022-03-29 09:34:08 +01:00
Curtis Hard	774ff48074	Refactor, IJSVGParser is not the root anymore, there is a new IJSVGRootNode as the root of the node tree	2022-03-28 20:31:27 +01:00
Curtis Hard	2eb629cd21	Overhaul of parser	2022-03-28 19:14:46 +01:00
Curtis Hard	137e34623f	hacky things!	2022-03-27 22:05:19 +01:00
Curtis Hard	39b0b5bbb4	More image fixes	2022-03-27 20:45:31 +01:00
Curtis Hard	820fca2679	Merge branch 'features/patterns' of https://github.com/curthard89/IJSVG into features/patterns	2022-03-27 15:38:09 +01:00
Curtis Hard	2e5819183d	More pattern things	2022-03-27 15:36:33 +01:00
Curtis Hard	eff56d3c60	More pattern things, this is not fun	2022-03-27 15:35:51 +01:00
Curtis Hard	7a4fd35a64	initial pattern fixes	2022-03-25 13:21:59 +00:00
Curtis Hard	964dc3005d	Merge branch 'fixes/const-memory-alloc-issues' of https://github.com/curthard89/IJSVG	2022-03-23 18:27:54 +00:00
Curtis Hard	1a8d44ec95	Fixes masking for gradients	2022-03-23 18:27:41 +00:00
Curtis Hard	717198457b	Adds new method to create a trimmed string - adds `const` in various places - uses the new trimmed string method - adds various memory releases in	2022-01-24 14:33:54 +00:00
Curtis Hard	e2991ab8b0	Fixes smooth quad / curves having incorrect path data on export	2022-01-04 14:04:23 +00:00
Curtis Hard	dda3e5ed8c	Merge branch 'feature/ijsvgcolorsub'	2022-01-04 11:17:38 +00:00
Curtis Hard	c3a0fb5b91	Fixes 10.9 issue with const	2022-01-04 11:17:15 +00:00
Curtis Hard	7ce4520a56	Adds currentColor as a predefined constant	2021-12-29 16:25:52 +00:00
Curtis Hard	368d19ea81	Nullable types	2021-12-28 22:33:12 +00:00
Curtis Hard	d26c2f489f	Adds delegate methods for color and ID	2021-12-28 19:28:32 +00:00
Curtis Hard	75b0d55b63	#oops, wrong list being used	2021-12-26 18:50:51 +00:00
Curtis Hard	310308cd8a	Fixes stroke colorList stop colors not being identified correctly	2021-12-26 18:11:30 +00:00
Curtis Hard	278f405a41	Possible fix for older OS's	2021-12-15 15:16:59 +00:00
Curtis Hard	7addd97d0c	Fixes issue with clipPath not using correct units - adds support for overflow attribute	2021-11-24 15:15:54 +00:00
Curtis Hard	d01ca0f3bb	Fixes issue with wrong colors being used	2021-10-19 20:49:57 +01:00
Curtis Hard	6d7ad17e2a	Fixes threading race condition	2021-05-11 22:06:56 +01:00
Curtis Hard	deb09eaf04	Merge branch 'feature/color-stroke-checking'	2021-04-27 09:45:29 +01:00
Curtis Hard	1e7b8b38a5	Fixes the double quotes being used instead of angled brackets	2021-04-26 13:45:32 +01:00
Curtis Hard	58e1a8c45d	fixes tempalte void things	2021-04-26 10:35:08 +01:00
Curtis Hard	a525e4351a	Fixes computeColorList for gradient export	2021-04-24 13:41:05 +01:00
Curtis Hard	c87716b311	Code style	2021-04-21 20:18:07 +01:00
Curtis Hard	583a930bf7	Fixes multithread issue with strtok	2021-04-21 15:24:51 +01:00
Curtis Hard	ec2473d450	Adds transaction to fix memory issue	2021-04-21 13:39:31 +01:00
Curtis Hard	3cc477955a	Fixes enums and options	2021-04-20 20:36:37 +01:00
Curtis Hard	1f0ff52dff	Adds color types	2021-04-20 16:31:52 +01:00
Curtis Hard	e96bfa54b0	Make sure to check it has alpha	2021-04-20 12:15:23 +01:00
Curtis Hard	cd3b540274	Initial commit	2021-04-20 09:31:10 +01:00
Curtis Hard	1cfbaf14e4	added utils for converting CGLineCap and Joi nto IJSVG counterparts	2021-04-11 17:13:45 +01:00
Curtis Hard	5a389f88d3	Added initWithDataAssetNamed:bundle:error: Added support for loading SVG’s from the data asset catalogue	2021-04-07 21:42:00 +01:00
Curtis Hard	9f43832ff3	Fixes elliptical arc	2021-02-17 21:32:13 +00:00
Curtis Hard	65623ec552	Fixes colour forced from a style	2021-02-16 21:11:26 +00:00
Curtis Hard	5192520b7c	Fixes memory crash	2021-02-16 09:37:22 +00:00
Curtis Hard	5123ee7308	Fixes crash	2021-02-11 21:39:31 +00:00
Curtis Hard	c886a6a80d	trolled by CGPath not being identical to bezierpath	2021-02-10 22:21:13 +00:00
Curtis Hard	4cd2895703	Seems to improve performance	2021-02-10 19:27:08 +00:00
Curtis Hard	a98d84f209	Removed bezier path additions as its now useless - more perfromance increases	2021-02-08 20:56:08 +00:00
Curtis Hard	8faab28823	Performance increases	2021-02-08 17:23:43 +00:00
Curtis Hard	cca5524a11	Converts all bezier path storage over to CGPath There was no need to use NSBezierPath, we only used to to convert to CGPath eventually, so swapped it all overm much faster	2021-02-06 18:33:23 +00:00
Curtis Hard	c14e2367a0	Formatting	2021-02-06 13:21:46 +00:00
Curtis Hard	db4b0e9a18	Fixes crash if string is nil	2021-02-06 12:25:16 +00:00
Curtis Hard	93d6a868a9	reformat and use of strtok - did not realise it was already built into C	2021-02-05 21:28:48 +00:00
Curtis Hard	60fa627d99	Perf	2021-02-05 15:51:15 +00:00
Curtis Hard	ccaa350190	Fixes issue with mem crash when no width or height is specified as a fallback	2021-02-03 22:03:38 +00:00
Curtis Hard	727f8a2dea	Modern Object-C refactor This refactors most of the old style synthesized properties and lets the compiler do it for us. This also changes how unit lengths works (now does correct parsing and using cstrings instead of nsstring where applicable)	2021-01-30 18:40:29 +00:00
Curtis Hard	972812b3f6	Fixes arc commands	2021-01-26 08:56:04 +00:00
Curtis Hard	ad8f440c72	Merge branch 'feature/cm-mm-units'	2021-01-25 19:32:47 +00:00
Curtis Hard	68393b296b	Faster low level parsing for paths	2021-01-25 19:29:53 +00:00
Curtis Hard	1cfcb596d9	Much faster command parsing tl;dr, stops converting between char/unichar and NSString, the low level code for passing commands wants char so no point of converting it to a higher level NSString* just to convert it back again, waste of time.	2021-01-24 22:18:07 +00:00
Curtis Hard	69077e49cf	Faster parsing for very large SVGs	2021-01-24 19:16:10 +00:00
Curtis Hard	3bdf2151ca	Rewrote how we parse transforms (its much faster) Also much faster arc transform processsing	2021-01-23 18:58:39 +00:00
Curtis Hard	f7e28a2962	Added originalType for future reference	2021-01-20 21:39:10 +00:00
Curtis Hard	2c07cfabdd	Added more units and neatened up methods	2021-01-20 21:19:28 +00:00
Curtis Hard	3e356b3fdc	Possible fix for CM and MM units	2021-01-20 21:00:15 +00:00
Curtis Hard	49f759edc0	Added extra header in	2021-01-10 16:55:28 +00:00
Curtis Hard	38e314eb99	Cant use description as its already a thing on NSObject. #oops	2020-11-22 18:50:09 +00:00
Curtis Hard	d0eb015cf1	Added title and desc parsing into the IJSVGNode	2020-11-22 18:14:04 +00:00
Curtis Hard	080626a022	Removed warning	2020-11-14 16:44:13 +00:00
Curtis Hard	36c20bc55c	Updated clang warning	2020-11-13 20:01:37 +00:00
Curtis Hard	4d89631e9a	Brace in the wrong place! #oops	2020-09-21 20:16:53 +01:00
Curtis Hard	65f62007f3	Fixes exception being thrown and lower cased move command	2020-09-21 19:55:31 +01:00
Curtis Hard	af5f16288d	Updated opyright	2020-09-21 09:58:38 +01:00
Curtis Hard	08e0f9288d	Adds support to remove default attributes from exported files	2020-09-16 18:40:05 +01:00
Curtis Hard	7650f6205c	More improvements to exporting data	2020-09-13 20:36:29 +01:00
Curtis Hard	263768af5b	Initial compression changes	2020-09-12 22:59:54 +01:00
Curtis Hard	4b1be17f9a	Reduces exported data by a fair amount on larger SVGs by using NSXMLNodeCompactEmptyElement to self close tags - also added option to get back an IJSVG object from the current export string	2020-09-08 18:57:20 +01:00
Curtis Hard	6b0d6b1452	This adds in floating point export options - aswell as an option to round matrix values	2020-09-03 19:37:37 +01:00
Curtis Hard	f80d4145bb	Default rounds numbers, but not for transforms	2020-08-14 20:48:33 +01:00
Curtis Hard	f68c83285b	Fixes issuew here stroke-opacity was not exported	2020-08-14 20:13:53 +01:00
Curtis Hard	1f4bd989d8	Fixes RX and RY on rect	2020-08-13 12:10:49 +01:00
Curtis Hard	5b5d0b738b	Added instruction passing for c -> s + t	2020-08-04 20:58:05 +01:00
Curtis Hard	bd82c5d81b	Only add the xlink namespace attribute on if required	2020-07-31 18:27:16 +01:00
Curtis Hard	145bbb17f8	Adds xml declaration removal to options	2020-07-29 20:13:01 +01:00
Curtis Hard	d9f40551a4	Added ijsvg_isHexString for faster hex comparison	2020-07-27 12:06:03 +01:00
Curtis Hard	4448f6aeaf	Small perf increase	2020-07-12 14:36:12 +01:00
Curtis Hard	6834abba19	Typo fix	2020-07-11 11:56:42 +01:00
Curtis Hard	a86b4e80ba	Refacator name	2020-07-09 16:32:20 +01:00
Curtis Hard	2e8d039599	Memory reductions	2020-06-27 19:00:38 +01:00
Curtis Hard	4ba6bb776d	Xcode stuff	2020-06-27 12:28:35 +01:00
Curtis Hard	9c80412e88	Various image additions	2020-06-15 09:25:53 +01:00
Curtis Hard	509f0e0b0a	Only allow removal of 0 if the float contains a floating point	2020-06-05 13:34:44 +01:00
Curtis Hard	ce30877a26	Xcode stuff	2020-05-25 19:58:48 +01:00
Curtis Hard	122271bf36	Fixes for layer tree masking	2020-04-18 17:16:29 +01:00
Curtis Hard	28b4c6b85c	Fixes issue with intrinsicSize size and dom being discarded	2020-03-01 18:19:38 +00:00
Curtis Hard	4b308d3a3e	Wrong unit used	2020-02-27 08:33:16 +00:00
Curtis Hard	d3ee05d8ac	#oops	2020-02-25 08:29:59 +00:00
Curtis Hard	204b516e77	Fixes width and height not working correctly	2020-02-12 22:32:52 +00:00
Curtis Hard	a832a986fd	Swaps back to CATransaction	2020-01-16 20:37:48 +00:00
Curtis Hard	f875714609	FOrmatting	2020-01-14 21:12:38 +00:00
Curtis Hard	b8f166f4c1	Uses NSAnimationContext over CATransaction for safety	2020-01-14 21:12:33 +00:00
Curtis Hard	7901c9eafe	Possible fixes for main thread	2020-01-14 20:41:59 +00:00
Curtis Hard	5de88cb1d7	#oopsie	2020-01-14 16:38:08 +00:00
Curtis Hard	6216b61c19	Fixes compat for 10.13 with CGPath block applying	2020-01-14 16:34:52 +00:00
Curtis Hard	e05f5a0884	Fixes compatibility issues for 10.9	2020-01-14 15:51:15 +00:00