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1 | |
2 /* | 1 /* |
3 * Copyright 2011 Google Inc. | 2 * Copyright 2011 Google Inc. |
4 * | 3 * |
5 * 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 |
6 * found in the LICENSE file. | 5 * found in the LICENSE file. |
7 */ | 6 */ |
7 | |
8 #include "gm.h" | 8 #include "gm.h" |
9 #include "SkBitmap.h" | 9 #include "SkBitmap.h" |
10 #include "SkCanvas.h" | 10 #include "SkCanvas.h" |
11 #include "SkDevice.h" | 11 #include "SkDevice.h" |
12 #include "SkString.h" | 12 #include "SkString.h" |
13 #include "SkSurface.h" | |
scroggo
2014/02/05 16:41:12
Did you mean to call newSurface in this file? It c
| |
13 | 14 |
14 namespace skiagm { | 15 namespace skiagm { |
15 | 16 |
16 static void create_bitmap(SkBitmap* bitmap) { | 17 static void create_bitmap(SkBitmap* bitmap) { |
17 const int W = 100; | 18 const int W = 100; |
18 const int H = 100; | 19 const int H = 100; |
19 bitmap->allocN32Pixels(W, H); | 20 bitmap->allocN32Pixels(W, H); |
20 | 21 |
21 SkCanvas canvas(*bitmap); | 22 SkCanvas canvas(*bitmap); |
22 canvas.drawColor(SK_ColorRED); | 23 canvas.drawColor(SK_ColorRED); |
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64 bitmap.extractSubset(&subset, SkIRect::MakeWH(x, bitmap.height())); | 65 bitmap.extractSubset(&subset, SkIRect::MakeWH(x, bitmap.height())); |
65 SkAutoCanvasRestore autoRestore(canvas, true); | 66 SkAutoCanvasRestore autoRestore(canvas, true); |
66 canvas->translate(0, SkIntToScalar(bitmap.height() + 20)); | 67 canvas->translate(0, SkIntToScalar(bitmap.height() + 20)); |
67 canvas->drawBitmap(subset, 0, 0); | 68 canvas->drawBitmap(subset, 0, 0); |
68 // Now draw a subet which has the same width and pixelref offset but | 69 // Now draw a subet which has the same width and pixelref offset but |
69 // a different height | 70 // a different height |
70 bitmap.extractSubset(&subset, SkIRect::MakeWH(bitmap.height(), y)); | 71 bitmap.extractSubset(&subset, SkIRect::MakeWH(bitmap.height(), y)); |
71 canvas->translate(0, SkIntToScalar(bitmap.height() + 20)); | 72 canvas->translate(0, SkIntToScalar(bitmap.height() + 20)); |
72 canvas->drawBitmap(subset, 0, 0); | 73 canvas->drawBitmap(subset, 0, 0); |
73 } | 74 } |
74 | |
75 // Now do the same but with a device bitmap as source image | |
76 SkAutoTUnref<SkBaseDevice> secondDevice(canvas->createCompatibleDevice( | |
77 SkBitmap::kARGB_8888_Config, bitmap.width(), | |
78 bitmap.height(), true)); | |
79 SkCanvas secondCanvas(secondDevice.get()); | |
80 secondCanvas.writePixels(bitmap, 0, 0); | |
81 | |
82 SkBitmap deviceBitmap = secondDevice->accessBitmap(false); | |
83 SkBitmap deviceSubset; | |
84 deviceBitmap.extractSubset(&deviceSubset, | |
85 SkIRect::MakeXYWH(x, y, x, y)); | |
86 | |
87 canvas->translate(SkIntToScalar(120), SkIntToScalar(0)); | |
88 | |
89 canvas->drawBitmap(deviceBitmap, 0, 0); | |
90 canvas->drawBitmap(deviceSubset, 0, 0); | |
91 | |
92 } | 75 } |
93 | 76 |
94 private: | 77 private: |
95 typedef GM INHERITED; | 78 typedef GM INHERITED; |
96 }; | 79 }; |
97 | 80 |
98 ////////////////////////////////////////////////////////////////////////////// | 81 ////////////////////////////////////////////////////////////////////////////// |
99 | 82 |
100 static GM* MyFactory(void*) { return new ExtractBitmapGM; } | 83 static GM* MyFactory(void*) { return new ExtractBitmapGM; } |
101 static GMRegistry reg(MyFactory); | 84 static GMRegistry reg(MyFactory); |
102 | 85 |
103 } | 86 } |
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