Fix image.scroll

lime/graphics/Image.hx

@@ -317,6 +317,14 @@ class Image {
 			destPoint.y = 0;					//clamp destination point to 0
 		}
 		
+		// TODO: Optimize
+		
+		if (sourceImage == this) {
+			
+			sourceImage = clone ();
+			
+		}
+		
 		switch (type) {
 			
 			case CANVAS:
@@ -801,12 +809,6 @@ class Image {
 			
 			case DATA:
 				
-				//#if (js && html5)
-				//ImageCanvasUtil.convertToData (this);
-				//#end
-				
-				//ImageDataUtil.scroll (this, x, y);
-				
 				copyPixels (this, rect, new Vector2 (x, y));
 			
 			case FLASH:

lime/graphics/utils/ImageCanvasUtil.hx

@@ -369,10 +369,12 @@ class ImageCanvasUtil {
 		
 		if ((x % image.width == 0) && (y % image.height == 0)) return;
 		
+		var copy = image.clone ();
+		
 		convertToCanvas (image, true);
 		
 		image.buffer.__srcContext.clearRect (x, y, image.width, image.height);
-		image.buffer.__srcContext.drawImage (image.buffer.__srcCanvas, x, y);
+		image.buffer.__srcContext.drawImage (copy.src, x, y);
 		
 		image.dirty = true;
 		image.version++;