a19818a146
TBR=zork@chromium.org Review URL: https://codereview.chromium.org/94043005 git-svn-id: http://skia.googlecode.com/svn/trunk@12942 2bbb7eff-a529-9590-31e7-b0007b416f81
87 lines
2.4 KiB
C++
87 lines
2.4 KiB
C++
/*
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* Copyright 2013 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 "gm.h"
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#include "SkAlphaThresholdFilter.h"
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#include "SkRandom.h"
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#define WIDTH 500
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#define HEIGHT 500
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namespace skiagm {
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class ImageAlphaThresholdGM : public GM {
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public:
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ImageAlphaThresholdGM() {
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this->setBGColor(0xFFFFFFFF);
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}
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protected:
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virtual uint32_t onGetFlags() const SK_OVERRIDE {
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return this->INHERITED::onGetFlags() |
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GM::kSkipTiled_Flag |
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GM::kSkipPicture_Flag |
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GM::kSkipPipe_Flag |
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GM::kSkipPipeCrossProcess_Flag;
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}
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virtual SkString onShortName() SK_OVERRIDE {
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return SkString("imagealphathreshold");
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}
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virtual SkISize onISize() SK_OVERRIDE {
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return make_isize(WIDTH, HEIGHT);
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}
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virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
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SkIRect rects[2];
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rects[0] = SkIRect::MakeXYWH(0, 150, WIDTH, HEIGHT - 300);
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rects[1] = SkIRect::MakeXYWH(150, 0, WIDTH - 300, HEIGHT);
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SkRegion region;
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region.setRects(rects, 2);
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SkMatrix matrix;
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matrix.reset();
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matrix.setTranslate(WIDTH * .1f, HEIGHT * .1f);
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matrix.postScale(.8f, .8f);
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canvas->concat(matrix);
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SkPaint paint;
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paint.setImageFilter(
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SkAlphaThresholdFilter::Create(region, 0.2f, 0.7f))->unref();
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canvas->saveLayer(NULL, &paint);
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paint.setAntiAlias(true);
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SkPaint rect_paint;
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rect_paint.setColor(0xFF0000FF);
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canvas->drawRect(SkRect::MakeXYWH(0, 0, WIDTH / 2, HEIGHT / 2),
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rect_paint);
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rect_paint.setColor(0xBFFF0000);
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canvas->drawRect(SkRect::MakeXYWH(WIDTH / 2, 0, WIDTH / 2, HEIGHT / 2),
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rect_paint);
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rect_paint.setColor(0x3F00FF00);
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canvas->drawRect(SkRect::MakeXYWH(0, HEIGHT / 2, WIDTH / 2, HEIGHT / 2),
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rect_paint);
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rect_paint.setColor(0x00000000);
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canvas->drawRect(SkRect::MakeXYWH(WIDTH / 2, HEIGHT / 2, WIDTH / 2, HEIGHT / 2),
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rect_paint);
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canvas->restore();
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}
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private:
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typedef GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static GM* MyFactory(void*) { return new ImageAlphaThresholdGM; }
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static GMRegistry reg(MyFactory);
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}
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