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1 /* | 1 /* |
2 * Copyright 2012 Google Inc. | 2 * Copyright 2012 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "SkBitmap.h" | 8 #include "SkBitmap.h" |
9 #include "SkCanvas.h" | 9 #include "SkCanvas.h" |
10 #include "SkImagePriv.h" | 10 #include "SkImagePriv.h" |
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96 return true; | 96 return true; |
97 case kAlpha_8_SkColorType: | 97 case kAlpha_8_SkColorType: |
98 return true; | 98 return true; |
99 default: | 99 default: |
100 break; | 100 break; |
101 } | 101 } |
102 return false; | 102 return false; |
103 } | 103 } |
104 | 104 |
105 bool SkImage_Base::onReadPixels(SkBitmap* bitmap, const SkIRect& subset) const { | 105 bool SkImage_Base::onReadPixels(SkBitmap* bitmap, const SkIRect& subset) const { |
106 SkImageInfo info; | |
107 | |
108 if (bitmap->pixelRef()) { | 106 if (bitmap->pixelRef()) { |
109 if (!bitmap->asImageInfo(&info)) { | 107 const SkImageInfo info = bitmap->info(); |
| 108 if (kUnknown_SkColorType == info.colorType()) { |
110 return false; | 109 return false; |
111 } | 110 } |
112 if (!raster_canvas_supports(info)) { | 111 if (!raster_canvas_supports(info)) { |
113 return false; | 112 return false; |
114 } | 113 } |
115 } else { | 114 } else { |
116 SkImageInfo info = SkImageInfo::MakeN32Premul(subset.width(), | 115 const SkImageInfo info = SkImageInfo::MakeN32Premul(subset.width(), subs
et.height()); |
117 subset.height()); | |
118 SkBitmap tmp; | 116 SkBitmap tmp; |
119 if (!tmp.allocPixels(info)) { | 117 if (!tmp.allocPixels(info)) { |
120 return false; | 118 return false; |
121 } | 119 } |
122 *bitmap = tmp; | 120 *bitmap = tmp; |
123 } | 121 } |
124 | 122 |
125 SkRect srcR, dstR; | 123 SkRect srcR, dstR; |
126 srcR.set(subset); | 124 srcR.set(subset); |
127 dstR = srcR; | 125 dstR = srcR; |
128 dstR.offset(-dstR.left(), -dstR.top()); | 126 dstR.offset(-dstR.left(), -dstR.top()); |
129 | 127 |
130 SkCanvas canvas(*bitmap); | 128 SkCanvas canvas(*bitmap); |
131 | 129 |
132 SkPaint paint; | 130 SkPaint paint; |
133 paint.setXfermodeMode(SkXfermode::kClear_Mode); | 131 paint.setXfermodeMode(SkXfermode::kClear_Mode); |
134 canvas.drawRect(dstR, paint); | 132 canvas.drawRect(dstR, paint); |
135 | 133 |
136 const_cast<SkImage_Base*>(this)->onDrawRectToRect(&canvas, &srcR, dstR, NULL
); | 134 const_cast<SkImage_Base*>(this)->onDrawRectToRect(&canvas, &srcR, dstR, NULL
); |
137 return true; | 135 return true; |
138 } | 136 } |
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