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96 lines
2.4 KiB
96 lines
2.4 KiB
/*
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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 "SkCanvas.h"
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#include "SkPath.h"
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class CircularClipsGM : public skiagm::GM {
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SkScalar fX1, fX2, fY, fR;
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SkPath fCircle1, fCircle2;
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protected:
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void onOnceBeforeDraw() override {
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fX1 = 80;
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fX2 = 120;
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fY = 50;
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fR = 40;
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fCircle1.addCircle(fX1, fY, fR, SkPath::kCW_Direction);
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fCircle2.addCircle(fX2, fY, fR, SkPath::kCW_Direction);
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}
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bool runAsBench() const override { return true; }
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SkString onShortName() override {
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return SkString("circular-clips");
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}
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SkISize onISize() override {
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return SkISize::Make(800, 600);
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}
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void onDraw(SkCanvas* canvas) override {
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const SkClipOp ops[] = {
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kDifference_SkClipOp,
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kIntersect_SkClipOp,
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kUnion_SkClipOp,
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kXOR_SkClipOp,
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kReverseDifference_SkClipOp,
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kReplace_SkClipOp,
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};
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SkRect rect = SkRect::MakeLTRB(fX1 - fR, fY - fR, fX2 + fR, fY + fR);
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SkPaint fillPaint;
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// Giant background circular clips (AA, non-inverted, replace/isect)
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fillPaint.setColor(0x80808080);
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canvas->save();
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canvas->scale(10, 10);
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canvas->translate(-((fX1 + fX2)/2 - fR), -(fY - 2*fR/3));
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canvas->clipPath(fCircle1, true);
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canvas->clipPath(fCircle2, true);
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canvas->drawRect(rect, fillPaint);
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canvas->restore();
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fillPaint.setColor(0xFF000000);
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for (size_t i = 0; i < 4; i++) {
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fCircle1.toggleInverseFillType();
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if (i % 2 == 0) {
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fCircle2.toggleInverseFillType();
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}
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canvas->save();
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for (size_t op = 0; op < SK_ARRAY_COUNT(ops); op++) {
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canvas->save();
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canvas->clipPath(fCircle1);
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canvas->clipPath(fCircle2, ops[op]);
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canvas->drawRect(rect, fillPaint);
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canvas->restore();
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canvas->translate(0, 2 * fY);
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}
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canvas->restore();
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canvas->translate(fX1 + fX2, 0);
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}
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}
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private:
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typedef skiagm::GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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DEF_GM( return new CircularClipsGM; )
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