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| 1 /* |
| 2 * Copyright 2016 Google Inc. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. |
| 6 */ |
| 7 |
| 8 #include "Resources.h" |
| 9 #include "SkBitmap.h" |
| 10 #include "gm.h" |
| 11 |
| 12 DEF_SIMPLE_GM(bitmap_subset_shader, canvas, 256, 256) { |
| 13 canvas->clear(SK_ColorWHITE); |
| 14 |
| 15 SkBitmap source; |
| 16 if (!GetResourceAsBitmap("color_wheel.png", &source)) { |
| 17 return; |
| 18 } |
| 19 SkIRect left = SkIRect::MakeWH(source.width()/2, source.height()); |
| 20 SkIRect right = SkIRect::MakeXYWH(source.width()/2, 0, |
| 21 source.width()/2, source.height()); |
| 22 SkBitmap leftBitmap, rightBitmap; |
| 23 source.extractSubset(&leftBitmap, left); |
| 24 source.extractSubset(&rightBitmap, right); |
| 25 |
| 26 SkMatrix matrix; |
| 27 matrix.setScale(0.75f, 0.75f); |
| 28 matrix.preRotate(30.0f); |
| 29 SkShader::TileMode tm = SkShader::kRepeat_TileMode; |
| 30 SkPaint paint; |
| 31 paint.setShader(SkShader::MakeBitmapShader(leftBitmap, tm, tm, &matrix)); |
| 32 canvas->drawRect(SkRect::MakeWH(256.0f, 128.0f), paint); |
| 33 paint.setShader(SkShader::MakeBitmapShader(rightBitmap, tm, tm, &matrix)); |
| 34 canvas->drawRect(SkRect::MakeXYWH(0, 128.0f, 256.0f, 128.0f), paint); |
| 35 } |
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