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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2011 Google Inc. | 3 * Copyright 2011 Google Inc. |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 | 9 |
10 #include "SkPixelXorXfermode.h" | 10 #include "SkPixelXorXfermode.h" |
11 #include "SkColorPriv.h" | 11 #include "SkColorPriv.h" |
12 #include "SkFlattenableBuffers.h" | 12 #include "SkReadBuffer.h" |
| 13 #include "SkWriteBuffer.h" |
13 #include "SkString.h" | 14 #include "SkString.h" |
14 | 15 |
15 // we always return an opaque color, 'cause I don't know what to do with | 16 // we always return an opaque color, 'cause I don't know what to do with |
16 // the alpha-component and still return a valid premultiplied color. | 17 // the alpha-component and still return a valid premultiplied color. |
17 SkPMColor SkPixelXorXfermode::xferColor(SkPMColor src, SkPMColor dst) const { | 18 SkPMColor SkPixelXorXfermode::xferColor(SkPMColor src, SkPMColor dst) const { |
18 SkPMColor res = src ^ dst ^ fOpColor; | 19 SkPMColor res = src ^ dst ^ fOpColor; |
19 res |= (SK_A32_MASK << SK_A32_SHIFT); // force it to be opaque | 20 res |= (SK_A32_MASK << SK_A32_SHIFT); // force it to be opaque |
20 return res; | 21 return res; |
21 } | 22 } |
22 | 23 |
23 void SkPixelXorXfermode::flatten(SkFlattenableWriteBuffer& wb) const { | 24 void SkPixelXorXfermode::flatten(SkWriteBuffer& wb) const { |
24 this->INHERITED::flatten(wb); | 25 this->INHERITED::flatten(wb); |
25 wb.writeColor(fOpColor); | 26 wb.writeColor(fOpColor); |
26 } | 27 } |
27 | 28 |
28 SkPixelXorXfermode::SkPixelXorXfermode(SkFlattenableReadBuffer& rb) | 29 SkPixelXorXfermode::SkPixelXorXfermode(SkReadBuffer& rb) |
29 : INHERITED(rb) { | 30 : INHERITED(rb) { |
30 fOpColor = rb.readColor(); | 31 fOpColor = rb.readColor(); |
31 } | 32 } |
32 | 33 |
33 #ifdef SK_DEVELOPER | 34 #ifdef SK_DEVELOPER |
34 void SkPixelXorXfermode::toString(SkString* str) const { | 35 void SkPixelXorXfermode::toString(SkString* str) const { |
35 str->append("SkPixelXorXfermode: "); | 36 str->append("SkPixelXorXfermode: "); |
36 str->appendHex(fOpColor); | 37 str->appendHex(fOpColor); |
37 } | 38 } |
38 #endif | 39 #endif |
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