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 "SkShader.h" 11 #include "gm.h" 12 13 DEF_SIMPLE_GM(bitmap_subset_shader, canvas, 256, 256) { 14 canvas->clear(SK_ColorWHITE); 15 16 SkBitmap source; 17 if (!GetResourceAsBitmap("images/color_wheel.png", &source)) { 18 return; 19 } 20 SkIRect left = SkIRect::MakeWH(source.width()/2, source.height()); 21 SkIRect right = SkIRect::MakeXYWH(source.width()/2, 0, 22 source.width()/2, source.height()); 23 SkBitmap leftBitmap, rightBitmap; 24 source.extractSubset(&leftBitmap, left); 25 source.extractSubset(&rightBitmap, right); 26 27 SkMatrix matrix; 28 matrix.setScale(0.75f, 0.75f); 29 matrix.preRotate(30.0f); 30 SkShader::TileMode tm = SkShader::kRepeat_TileMode; 31 SkPaint paint; 32 paint.setShader(SkShader::MakeBitmapShader(leftBitmap, tm, tm, &matrix)); 33 canvas->drawRect(SkRect::MakeWH(256.0f, 128.0f), paint); 34 paint.setShader(SkShader::MakeBitmapShader(rightBitmap, tm, tm, &matrix)); 35 canvas->drawRect(SkRect::MakeXYWH(0, 128.0f, 256.0f, 128.0f), paint); 36 } 37
