3 * Copyright 2011 Google Inc.
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
10 #include "SkPixelXorXfermode.h"
11 #include "SkColorPriv.h"
12 #include "SkReadBuffer.h"
13 #include "SkWriteBuffer.h"
16 // we always return an opaque color, 'cause I don't know what to do with
17 // the alpha-component and still return a valid premultiplied color.
18 SkPMColor SkPixelXorXfermode::xferColor(SkPMColor src, SkPMColor dst) const {
19 SkPMColor res = src ^ dst ^ fOpColor;
20 res |= (SK_A32_MASK << SK_A32_SHIFT); // force it to be opaque
24 void SkPixelXorXfermode::flatten(SkWriteBuffer& wb) const {
25 wb.writeColor(fOpColor);
28 #ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING
29 SkPixelXorXfermode::SkPixelXorXfermode(SkReadBuffer& rb) : INHERITED(rb) {
30 fOpColor = rb.readColor();
34 SkFlattenable* SkPixelXorXfermode::CreateProc(SkReadBuffer& buffer) {
35 return Create(buffer.readColor());
38 #ifndef SK_IGNORE_TO_STRING
39 void SkPixelXorXfermode::toString(SkString* str) const {
40 str->append("SkPixelXorXfermode: ");
41 str->appendHex(fOpColor);