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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" |
11 #include "SkColorPriv.h" | 11 #include "SkColorPriv.h" |
12 #include "SkString.h" | 12 #include "SkString.h" |
13 | 13 |
14 bool SkTransparentShader::setContext(const SkBitmap& device, | 14 bool SkTransparentShader::setContext(const SkBitmap& device, |
15 const SkPaint& paint, | 15 const SkPaint& paint, |
16 const SkMatrix& matrix) { | 16 const SkMatrix& matrix) { |
17 fDevice = &device; | 17 fDevice = &device; |
18 fAlpha = paint.getAlpha(); | 18 fAlpha = paint.getAlpha(); |
19 | 19 |
20 return this->INHERITED::setContext(device, paint, matrix); | 20 return this->INHERITED::setContext(device, paint, matrix); |
21 } | 21 } |
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->getConfig()) { | 26 switch (fDevice->config()) { |
27 case SkBitmap::kRGB_565_Config: | 27 case SkBitmap::kRGB_565_Config: |
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 SkBitmap::kARGB_8888_Config: | 32 case SkBitmap::kARGB_8888_Config: |
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->getConfig()) { | 45 switch (fDevice->config()) { |
46 case SkBitmap::kARGB_8888_Config: | 46 case SkBitmap::kARGB_8888_Config: |
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); |
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96 } | 96 } |
97 case SkBitmap::kA1_Config: | 97 case SkBitmap::kA1_Config: |
98 SkDEBUGFAIL("kA1_Config umimplemented at this time"); | 98 SkDEBUGFAIL("kA1_Config umimplemented at this time"); |
99 break; | 99 break; |
100 default: // to avoid warnings | 100 default: // to avoid warnings |
101 break; | 101 break; |
102 } | 102 } |
103 } | 103 } |
104 | 104 |
105 void SkTransparentShader::shadeSpan16(int x, int y, uint16_t span[], int count)
{ | 105 void SkTransparentShader::shadeSpan16(int x, int y, uint16_t span[], int count)
{ |
106 SkASSERT(fDevice->getConfig() == SkBitmap::kRGB_565_Config); | 106 SkASSERT(fDevice->config() == SkBitmap::kRGB_565_Config); |
107 | 107 |
108 uint16_t* src = fDevice->getAddr16(x, y); | 108 uint16_t* src = fDevice->getAddr16(x, y); |
109 if (src != span) { | 109 if (src != span) { |
110 memcpy(span, src, count << 1); | 110 memcpy(span, src, count << 1); |
111 } | 111 } |
112 } | 112 } |
113 | 113 |
114 #ifdef SK_DEVELOPER | 114 #ifdef SK_DEVELOPER |
115 void SkTransparentShader::toString(SkString* str) const { | 115 void SkTransparentShader::toString(SkString* str) const { |
116 str->append("SkTransparentShader: ("); | 116 str->append("SkTransparentShader: ("); |
117 | 117 |
118 this->INHERITED::toString(str); | 118 this->INHERITED::toString(str); |
119 | 119 |
120 str->append(")"); | 120 str->append(")"); |
121 } | 121 } |
122 #endif | 122 #endif |
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