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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 "SkReadBuffer.h" | 12 #include "SkReadBuffer.h" |
| 13 #include "SkWriteBuffer.h" | 13 #include "SkWriteBuffer.h" |
| 14 #include "SkString.h" | 14 #include "SkString.h" |
| 15 | 15 |
| 16 // 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 |
| 17 // the alpha-component and still return a valid premultiplied color. | 17 // the alpha-component and still return a valid premultiplied color. |
| 18 SkPMColor SkPixelXorXfermode::xferColor(SkPMColor src, SkPMColor dst) const { | 18 SkPMColor SkPixelXorXfermode::xferColor(SkPMColor src, SkPMColor dst) const { |
| 19 SkPMColor res = src ^ dst ^ fOpColor; | 19 SkPMColor res = src ^ dst ^ fOpColor; |
| 20 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 |
| 21 return res; | 21 return res; |
| 22 } | 22 } |
| 23 | 23 |
| 24 void SkPixelXorXfermode::flatten(SkWriteBuffer& wb) const { | 24 void SkPixelXorXfermode::flatten(SkWriteBuffer& wb) const { |
| 25 wb.writeColor(fOpColor); | 25 wb.writeColor(fOpColor); |
| 26 } | 26 } |
| 27 | 27 |
| 28 #ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING | |
| 29 SkPixelXorXfermode::SkPixelXorXfermode(SkReadBuffer& rb) : INHERITED(rb) { | |
| 30 fOpColor = rb.readColor(); | |
| 31 } | |
| 32 #endif | |
| 33 | |
| 34 SkFlattenable* SkPixelXorXfermode::CreateProc(SkReadBuffer& buffer) { | 28 SkFlattenable* SkPixelXorXfermode::CreateProc(SkReadBuffer& buffer) { |
| 35 return Create(buffer.readColor()); | 29 return Create(buffer.readColor()); |
| 36 } | 30 } |
| 37 | 31 |
| 38 #ifndef SK_IGNORE_TO_STRING | 32 #ifndef SK_IGNORE_TO_STRING |
| 39 void SkPixelXorXfermode::toString(SkString* str) const { | 33 void SkPixelXorXfermode::toString(SkString* str) const { |
| 40 str->append("SkPixelXorXfermode: "); | 34 str->append("SkPixelXorXfermode: "); |
| 41 str->appendHex(fOpColor); | 35 str->appendHex(fOpColor); |
| 42 } | 36 } |
| 43 #endif | 37 #endif |
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