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Side by Side Diff: gm/extractbitmap.cpp

Issue 154163002: remove SkCanvas::createCompatibleDevice, and add SkCanvas::newSurface (Closed) Base URL: https://skia.googlecode.com/svn/trunk
Patch Set: Created 6 years, 10 months ago
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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);
(...skipping 41 matching lines...) Expand 10 before | Expand all | Expand 10 after
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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