36 lines
1.2 KiB
C++
36 lines
1.2 KiB
C++
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/*
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* Copyright 2016 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "Resources.h"
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#include "SkBitmap.h"
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#include "gm.h"
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DEF_SIMPLE_GM(bitmap_subset_shader, canvas, 256, 256) {
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canvas->clear(SK_ColorWHITE);
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SkBitmap source;
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if (!GetResourceAsBitmap("color_wheel.png", &source)) {
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return;
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}
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SkIRect left = SkIRect::MakeWH(source.width()/2, source.height());
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SkIRect right = SkIRect::MakeXYWH(source.width()/2, 0,
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source.width()/2, source.height());
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SkBitmap leftBitmap, rightBitmap;
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source.extractSubset(&leftBitmap, left);
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source.extractSubset(&rightBitmap, right);
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SkMatrix matrix;
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matrix.setScale(0.75f, 0.75f);
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matrix.preRotate(30.0f);
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SkShader::TileMode tm = SkShader::kRepeat_TileMode;
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SkPaint paint;
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paint.setShader(SkShader::MakeBitmapShader(leftBitmap, tm, tm, &matrix));
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canvas->drawRect(SkRect::MakeWH(256.0f, 128.0f), paint);
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paint.setShader(SkShader::MakeBitmapShader(rightBitmap, tm, tm, &matrix));
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canvas->drawRect(SkRect::MakeXYWH(0, 128.0f, 256.0f, 128.0f), paint);
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}
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