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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"
namespace skiagm {
class CircularClipsGM : public GM {
public:
CircularClipsGM() {}
protected:
virtual SkString onShortName() {
return SkString("circular-clips");
}
virtual SkISize onISize() {
return SkISize::Make(800, 600);
}
virtual void onDraw(SkCanvas* canvas) {
SkRegion::Op ops[] = {
SkRegion::kDifference_Op,
SkRegion::kIntersect_Op,
SkRegion::kUnion_Op,
SkRegion::kXOR_Op,
SkRegion::kReverseDifference_Op,
SkRegion::kReplace_Op,
};
SkScalar x1 = 80, x2 = 120;
SkScalar y = 50;
SkScalar r = 40;
SkPath circle1, circle2;
circle1.addCircle(x1, y, r, SkPath::kCW_Direction);
circle2.addCircle(x2, y, r, SkPath::kCW_Direction);
SkRect rect = SkRect::MakeLTRB(x1 - r, y - r, x2 + r, y + r);
SkPaint fillPaint;
for (size_t i = 0; i < 4; i++) {
circle1.toggleInverseFillType();
if (i % 2 == 0) {
circle2.toggleInverseFillType();
}
canvas->save();
for (size_t op = 0; op < SK_ARRAY_COUNT(ops); op++) {
canvas->save();
canvas->clipPath(circle1, SkRegion::kReplace_Op);
canvas->clipPath(circle2, ops[op]);
canvas->drawRect(rect, fillPaint);
canvas->restore();
canvas->translate(0, 2 * y);
}
canvas->restore();
canvas->translate(x1 + x2, 0);
}
}
private:
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM( return new CircularClipsGM; )
}
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