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Fix offset in direct blitting of nested Clip items.

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Jürg Lehni 2013-06-18 12:20:21 -07:00
parent a2cc7e11b3
commit 414ac1d092
1 changed files with 3 additions and 2 deletions
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5
src/item/Item.js
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@ -2932,13 +2932,14 @@ var Item = Base.extend(Callback, /** @lends Item# */{
if (parentCtx) {
// Restore previous offset.
param.offset = prevOffset;
var offset = itemOffset.subtract(prevOffset);
// If the item has a blendMode, use BlendMode#process to
// composite its canvas on the parentCanvas.
if (blending) {
// The pixel offset of the temporary canvas to the parent
// canvas.
BlendMode.process(this._blendMode, ctx, parentCtx,
this._opacity, itemOffset.subtract(prevOffset));
this._opacity, offset);
} else {
// Otherwise just set the globalAlpha before drawing the
// temporary canvas on the parent canvas.
@ -2947,7 +2948,7 @@ var Item = Base.extend(Callback, /** @lends Item# */{
// scale and with a given offset.
parentCtx.setTransform(1, 0, 0, 1, 0, 0);
parentCtx.globalAlpha = this._opacity;
parentCtx.drawImage(ctx.canvas, itemOffset.x, itemOffset.y);
parentCtx.drawImage(ctx.canvas, offset.x, offset.y);
parentCtx.restore();
}
// Return the temporary context, so it can be reused