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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2006 The Android Open Source Project | 3 * Copyright 2006 The Android Open Source Project |
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 "SkTransparentShader.h" | 10 #include "SkTransparentShader.h" |
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22 | 22 |
23 uint32_t SkTransparentShader::getFlags() { | 23 uint32_t SkTransparentShader::getFlags() { |
24 uint32_t flags = this->INHERITED::getFlags(); | 24 uint32_t flags = this->INHERITED::getFlags(); |
25 | 25 |
26 switch (fDevice->colorType()) { | 26 switch (fDevice->colorType()) { |
27 case kRGB_565_SkColorType: | 27 case kRGB_565_SkColorType: |
28 flags |= kHasSpan16_Flag; | 28 flags |= kHasSpan16_Flag; |
29 if (fAlpha == 255) | 29 if (fAlpha == 255) |
30 flags |= kOpaqueAlpha_Flag; | 30 flags |= kOpaqueAlpha_Flag; |
31 break; | 31 break; |
32 case kPMColor_SkColorType: | 32 case kN32_SkColorType: |
33 if (fAlpha == 255 && fDevice->isOpaque()) | 33 if (fAlpha == 255 && fDevice->isOpaque()) |
34 flags |= kOpaqueAlpha_Flag; | 34 flags |= kOpaqueAlpha_Flag; |
35 break; | 35 break; |
36 default: | 36 default: |
37 break; | 37 break; |
38 } | 38 } |
39 return flags; | 39 return flags; |
40 } | 40 } |
41 | 41 |
42 void SkTransparentShader::shadeSpan(int x, int y, SkPMColor span[], int count) { | 42 void SkTransparentShader::shadeSpan(int x, int y, SkPMColor span[], int count) { |
43 unsigned scale = SkAlpha255To256(fAlpha); | 43 unsigned scale = SkAlpha255To256(fAlpha); |
44 | 44 |
45 switch (fDevice->colorType()) { | 45 switch (fDevice->colorType()) { |
46 case kPMColor_SkColorType: | 46 case kN32_SkColorType: |
47 if (scale == 256) { | 47 if (scale == 256) { |
48 SkPMColor* src = fDevice->getAddr32(x, y); | 48 SkPMColor* src = fDevice->getAddr32(x, y); |
49 if (src != span) { | 49 if (src != span) { |
50 memcpy(span, src, count * sizeof(SkPMColor)); | 50 memcpy(span, src, count * sizeof(SkPMColor)); |
51 } | 51 } |
52 } else { | 52 } else { |
53 const SkPMColor* src = fDevice->getAddr32(x, y); | 53 const SkPMColor* src = fDevice->getAddr32(x, y); |
54 for (int i = count - 1; i >= 0; --i) { | 54 for (int i = count - 1; i >= 0; --i) { |
55 span[i] = SkAlphaMulQ(src[i], scale); | 55 span[i] = SkAlphaMulQ(src[i], scale); |
56 } | 56 } |
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108 | 108 |
109 #ifndef SK_IGNORE_TO_STRING | 109 #ifndef SK_IGNORE_TO_STRING |
110 void SkTransparentShader::toString(SkString* str) const { | 110 void SkTransparentShader::toString(SkString* str) const { |
111 str->append("SkTransparentShader: ("); | 111 str->append("SkTransparentShader: ("); |
112 | 112 |
113 this->INHERITED::toString(str); | 113 this->INHERITED::toString(str); |
114 | 114 |
115 str->append(")"); | 115 str->append(")"); |
116 } | 116 } |
117 #endif | 117 #endif |
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