skia2/gm/distantclip.cpp
Ben Wagner 7fde8e1728 IWYU for gms.
This almost gets gms to be iwyu clean. The last bit is around gm.cpp
and the tracing framework and its use of atomic. Will also need a way
of keeping things from regressing, which is difficult due to needing to
do this outside-in.

Change-Id: I1393531e99da8b0f1a29f55c53c86d53f459af7d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/211593
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
2019-05-02 17:48:53 +00:00

79 lines
2.5 KiB
C++

/*
* 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/gm.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkPath.h"
#include "include/core/SkPicture.h"
#include "include/core/SkPictureRecorder.h"
#include "include/core/SkRect.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkScalar.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.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) {
constexpr SkScalar kOffset = 35000.0f;
constexpr SkScalar kExtents = 1000.0f;
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(kExtents, kOffset + kExtents, nullptr, 0);
rec->drawColor(SK_ColorRED);
rec->save();
SkRect r = SkRect::MakeXYWH(-kExtents, kOffset - kExtents, 2 * kExtents, 2 * kExtents);
SkPath p;
p.addRoundRect(r, 5, 5);
rec->clipPath(p, true);
rec->drawColor(SK_ColorGREEN);
rec->restore();
sk_sp<SkPicture> pict(recorder.finishRecordingAsPicture());
// Next we play that picture into another picture of the same size.
pict->playback(recorder.beginRecording(pict->cullRect().width(),
pict->cullRect().height(),
nullptr, 0));
sk_sp<SkPicture> pict2(recorder.finishRecordingAsPicture());
// Finally we play the part of that second picture that should be green into the canvas.
canvas->save();
canvas->translate(kExtents / 2, -(kOffset - kExtents / 2));
pict2->playback(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;
};
///////////////////////////////////////////////////////////////////////////////
DEF_GM( return new DistantClipGM; )
}