96 lines
2.5 KiB
C++
96 lines
2.5 KiB
C++
/*
|
|
* 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; )
|