59 lines
2.1 KiB
C++
59 lines
2.1 KiB
C++
/*
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* Copyright 2019 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/gm.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkColor.h"
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#include "include/core/SkColorFilter.h"
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#include "include/core/SkFont.h"
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#include "include/core/SkFontTypes.h"
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#include "include/core/SkImage.h"
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#include "include/core/SkImageInfo.h"
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#include "include/core/SkOverdrawCanvas.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkRefCnt.h"
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#include "include/core/SkSurface.h"
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#include "include/core/SkTypes.h"
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#include "include/effects/SkOverdrawColorFilter.h"
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#define WIDTH 500
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#define HEIGHT 500
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static const SkColor kOverdrawColors[6] = {
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0x00000000, 0x5fff0000, 0x2f0000ff, 0x2f00ff00, 0x3fff0000, 0x7fff0000,
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};
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DEF_SIMPLE_GM_BG(overdraw_canvas, canvas, WIDTH, HEIGHT, SK_ColorWHITE) {
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// Set up the overdraw canvas.
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SkImageInfo offscreenInfo = SkImageInfo::MakeA8(WIDTH, HEIGHT);
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sk_sp<SkSurface> offscreen = SkSurface::MakeRaster(offscreenInfo);
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auto c = offscreen->getCanvas();
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SkOverdrawCanvas overdrawCanvas(c);
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overdrawCanvas.drawRect(SkRect::MakeLTRB(10, 10, 200, 200), SkPaint());
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overdrawCanvas.drawRect(SkRect::MakeLTRB(20, 20, 190, 190), SkPaint());
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overdrawCanvas.drawRect(SkRect::MakeLTRB(30, 30, 180, 180), SkPaint());
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overdrawCanvas.drawRect(SkRect::MakeLTRB(40, 40, 170, 170), SkPaint());
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overdrawCanvas.drawRect(SkRect::MakeLTRB(50, 50, 160, 160), SkPaint());
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overdrawCanvas.drawRect(SkRect::MakeLTRB(60, 60, 150, 150), SkPaint());
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char text[] = "Ae_p";
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overdrawCanvas.drawSimpleText(text, 4, SkTextEncoding::kUTF8, 300, 300, SkFont(), SkPaint());
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sk_sp<SkImage> counts = offscreen->makeImageSnapshot();
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// Draw overdraw colors to the canvas. The color filter will convert counts to colors.
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SkPaint paint;
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paint.setColorFilter(SkOverdrawColorFilter::MakeWithSkColors(kOverdrawColors));
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canvas->drawImage(counts.get(), 0.0f, 0.0f, SkSamplingOptions(), &paint);
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canvas->drawString("This is some text:", 180, 300, SkFont(), SkPaint());
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}
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