Added viewPort to the layer tree

source/IJSVG.m

@@ -664,6 +664,7 @@
     // create the renderer and assign default values
     // from this SVG object
     IJSVGLayerTree * renderer = [[[IJSVGLayerTree alloc] init] autorelease];
+    renderer.viewBox = self.viewBox;
     renderer.fillColor = self.fillColor;
     renderer.strokeColor = self.strokeColor;
     

source/IJSVGLayerTree.h

@@ -15,6 +15,7 @@
     
 }
 
+@property (nonatomic, assign) CGRect viewBox;
 @property (nonatomic, retain) NSColor * fillColor;
 @property (nonatomic, retain) NSColor * strokeColor;
 

source/IJSVGLayerTree.m

@@ -28,6 +28,7 @@
 
 #define DEFAULT_SHAPE_FILL_COLOR [NSColor blackColor].CGColor
 
+@synthesize viewBox;
 @synthesize fillColor;
 @synthesize strokeColor;