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/*
* Copyright 2012 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 "SkPicture.h"
#include "SkPictureRecorder.h"
namespace skiagm {
class DistantClipGM : public GM {
public:
DistantClipGM() { }
protected:
SkString onShortName() {
return SkString("distantclip");
}
SkISize onISize() { return SkISize::Make(100, 100); }
virtual void onDraw(SkCanvas* canvas) {
int offset = 35000;
int extents = 1000;
SkPictureRecorder recorder;
// We record a picture of huge vertical extents in which we clear the canvas to red, create
// a 'extents' by 'extents' round rect clip at a vertical offset of 'offset', then draw
// green into that.
SkCanvas* rec = recorder.beginRecording(100, offset + extents, NULL, 0);
rec->drawColor(0xffff0000);
rec->save();
SkRect r = {
SkIntToScalar(-extents),
SkIntToScalar(offset - extents),
SkIntToScalar(extents),
SkIntToScalar(offset + extents)
};
SkPath p;
p.addRoundRect(r, 5, 5);
rec->clipPath(p, SkRegion::kIntersect_Op, true);
rec->drawColor(0xff00ff00);
rec->restore();
SkAutoTUnref<SkPicture> pict(recorder.endRecording());
// Next we play that picture into another picture of the same size.
pict->draw(recorder.beginRecording(100, offset + extents, NULL, 0));
SkAutoTUnref<SkPicture> pict2(recorder.endRecording());
// Finally we play the part of that second picture that should be green into the canvas.
canvas->save();
canvas->translate(SkIntToScalar(extents / 2),
SkIntToScalar(-(offset - extents / 2)));
pict2->draw(canvas);
canvas->restore();
// If the image is red, we erroneously decided the clipPath was empty and didn't record
// the green drawColor, if it's green we're all good.
}
private:
typedef GM INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
static GM* MyFactory(void*) { return new DistantClipGM; }
static GMRegistry reg(MyFactory);
}
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