skia2/gm/pathopsskpclip.cpp
caryclark@google.com 45a75fb4d0 path ops : make it real
Add an option to SkCanvas to turn on path
ops when combining clips. 

Allow Op() to use one of the input paths
as an output path.

Fix a bug in Op() when the minuend is empty
and the subtrahend is not (for difference).

Change the build to allow core to depend on pathops.
Review URL: https://codereview.chromium.org/14474002

git-svn-id: http://skia.googlecode.com/svn/trunk@8855 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-04-25 13:34:40 +00:00

74 lines
1.8 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 "SkBitmap.h"
#include "SkCanvas.h"
#include "SkClipStack.h"
#include "SkDevice.h"
#include "SkPath.h"
#include "SkPathOps.h"
#include "SkPicture.h"
#include "SkRect.h"
namespace skiagm {
class PathOpsSkpClipGM : public GM {
public:
PathOpsSkpClipGM() {
}
protected:
virtual SkString onShortName() SK_OVERRIDE {
return SkString("pathopsskpclip");
}
virtual SkISize onISize() SK_OVERRIDE {
return make_isize(1200, 900);
}
virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
SkPicture* pict = SkNEW(SkPicture);
SkCanvas* rec = pict->beginRecording(1200, 900);
SkPath p;
SkRect r = {
SkIntToScalar(100),
SkIntToScalar(200),
SkIntToScalar(400),
SkIntToScalar(700)
};
p.addRoundRect(r, SkIntToScalar(50), SkIntToScalar(50));
rec->clipPath(p, SkRegion::kIntersect_Op, true);
rec->translate(SkIntToScalar(250), SkIntToScalar(250));
rec->clipPath(p, SkRegion::kIntersect_Op, true);
rec->drawColor(0xffff0000);
pict->endRecording();
canvas->setAllowSimplifyClip(true);
canvas->save();
canvas->drawPicture(*pict);
canvas->restore();
canvas->setAllowSimplifyClip(false);
canvas->save();
canvas->translate(SkIntToScalar(1200 / 2), 0);
canvas->drawPicture(*pict);
canvas->restore();
SkSafeUnref(pict);
}
private:
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static GM* MyFactory(void*) { return new PathOpsSkpClipGM; }
static GMRegistry reg(MyFactory);
}