91 lines
2.7 KiB
C++
91 lines
2.7 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 "gm.h"
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#include "SkAvoidXfermode.h"
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// This GM exercises how the avoid xfer mode interacts with partial coverage
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class AvoidXfermode3GM : public skiagm::GM {
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public:
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AvoidXfermode3GM() { }
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protected:
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SkString onShortName() override {
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return SkString("avoidxfermode3");
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}
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SkISize onISize() override { return SkISize::Make(128, 128); }
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void onDraw(SkCanvas* canvas) override {
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canvas->drawARGB(255, 0, 0, 0);
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SkRect r = SkRect::MakeXYWH(16.5f, 16.5f, 96.0f, 96.0f);
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SkPaint p0;
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p0.setColor(SK_ColorWHITE);
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p0.setAntiAlias(true);
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canvas->drawRect(r, p0);
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r = SkRect::MakeXYWH(3.5f, 3.5f, 59.0f, 59.0f);
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// UL corner: replace white with green with a tight tolerance
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SkPaint p1;
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p1.setColor(SK_ColorGREEN);
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p1.setAntiAlias(true);
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p1.setXfermode(SkAvoidXfermode::Create(SK_ColorWHITE,
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5,
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SkAvoidXfermode::kTargetColor_Mode))->unref();
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canvas->drawRect(r, p1);
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r.offsetTo(65.5f, 3.5f);
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// UR corner: draw red everywhere except white with a tight tolerance
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SkPaint p2;
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p2.setColor(SK_ColorRED);
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p2.setAntiAlias(true);
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p2.setXfermode(SkAvoidXfermode::Create(SK_ColorWHITE,
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250,
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SkAvoidXfermode::kAvoidColor_Mode))->unref();
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canvas->drawRect(r, p2);
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r.offsetTo(3.5f, 65.5f);
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// LL corner: replace white with blue with a loose tolerance
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SkPaint p3;
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p3.setColor(SK_ColorBLUE);
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p3.setAntiAlias(true);
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p3.setXfermode(SkAvoidXfermode::Create(SK_ColorWHITE,
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250,
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SkAvoidXfermode::kTargetColor_Mode))->unref();
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canvas->drawRect(r, p3);
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r.offsetTo(65.5f, 65.5f);
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// LR corner: draw yellow everywhere except white with a loose tolerance
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SkPaint p4;
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p4.setColor(SK_ColorYELLOW);
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p4.setAntiAlias(true);
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p4.setXfermode(SkAvoidXfermode::Create(SK_ColorWHITE,
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5,
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SkAvoidXfermode::kAvoidColor_Mode))->unref();
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canvas->drawRect(r, p4);
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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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DEF_GM(return new AvoidXfermode3GM;)
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