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/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm.h"
#include "SkCanvas.h"
#include "SkPath.h"
class CircularClipsGM : public skiagm::GM {
SkScalar fX1, fX2, fY, fR;
SkPath fCircle1, fCircle2;
protected:
void onOnceBeforeDraw() override {
fX1 = 80;
fX2 = 120;
fY = 50;
fR = 40;
fCircle1.addCircle(fX1, fY, fR, SkPath::kCW_Direction);
fCircle2.addCircle(fX2, fY, fR, SkPath::kCW_Direction);
}
bool runAsBench() const override { return true; }
SkString onShortName() override {
return SkString("circular-clips");
}
SkISize onISize() override {
return SkISize::Make(800, 600);
}
void onDraw(SkCanvas* canvas) override {
SkRegion::Op ops[] = {
SkRegion::kDifference_Op,
SkRegion::kIntersect_Op,
SkRegion::kUnion_Op,
SkRegion::kXOR_Op,
SkRegion::kReverseDifference_Op,
SkRegion::kReplace_Op,
};
SkRect rect = SkRect::MakeLTRB(fX1 - fR, fY - fR, fX2 + fR, fY + fR);
SkPaint fillPaint;
// Giant background circular clips (AA, non-inverted, replace/isect)
fillPaint.setColor(0x80808080);
canvas->save();
canvas->scale(10, 10);
canvas->translate(-((fX1 + fX2)/2 - fR), -(fY - 2*fR/3));
canvas->clipPath(fCircle1, SkRegion::kReplace_Op, true);
canvas->clipPath(fCircle2, SkRegion::kIntersect_Op, true);
canvas->drawRect(rect, fillPaint);
canvas->restore();
fillPaint.setColor(0xFF000000);
for (size_t i = 0; i < 4; i++) {
fCircle1.toggleInverseFillType();
if (i % 2 == 0) {
fCircle2.toggleInverseFillType();
}
canvas->save();
for (size_t op = 0; op < SK_ARRAY_COUNT(ops); op++) {
canvas->save();
canvas->clipPath(fCircle1, SkRegion::kReplace_Op);
canvas->clipPath(fCircle2, ops[op]);
canvas->drawRect(rect, fillPaint);
canvas->restore();
canvas->translate(0, 2 * fY);
}
canvas->restore();
canvas->translate(fX1 + fX2, 0);
}
}
private:
typedef skiagm::GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM( return new CircularClipsGM; )
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