66 lines
2.3 KiB
C++
66 lines
2.3 KiB
C++
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/*
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* Copyright 2012 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm/gm.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkColor.h"
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#include "include/core/SkPath.h"
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#include "include/core/SkPicture.h"
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#include "include/core/SkPictureRecorder.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkRefCnt.h"
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#include "include/core/SkScalar.h"
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#include "include/core/SkSize.h"
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#include "include/core/SkString.h"
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namespace skiagm {
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class DistantClipGM : public GM {
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SkString onShortName() override { return SkString("distantclip"); }
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SkISize onISize() override { return {100, 100}; }
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void onDraw(SkCanvas* canvas) override {
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constexpr SkScalar kOffset = 35000.0f;
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constexpr SkScalar kExtents = 1000.0f;
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SkPictureRecorder recorder;
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// We record a picture of huge vertical extents in which we clear the canvas to red, create
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// a 'extents' by 'extents' round rect clip at a vertical offset of 'offset', then draw
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// green into that.
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SkCanvas* rec = recorder.beginRecording(kExtents, kOffset + kExtents);
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rec->drawColor(SK_ColorRED);
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rec->save();
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SkRect r = SkRect::MakeXYWH(-kExtents, kOffset - kExtents, 2 * kExtents, 2 * kExtents);
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rec->clipPath(SkPath::RRect(r, 5, 5), true);
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rec->drawColor(SK_ColorGREEN);
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rec->restore();
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sk_sp<SkPicture> pict(recorder.finishRecordingAsPicture());
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// Next we play that picture into another picture of the same size.
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pict->playback(recorder.beginRecording(pict->cullRect().width(),
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pict->cullRect().height()));
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sk_sp<SkPicture> pict2(recorder.finishRecordingAsPicture());
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// Finally we play the part of that second picture that should be green into the canvas.
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canvas->save();
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canvas->translate(kExtents / 2, -(kOffset - kExtents / 2));
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pict2->playback(canvas);
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canvas->restore();
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// If the image is red, we erroneously decided the clipPath was empty and didn't record
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// the green drawColor, if it's green we're all good.
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}
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};
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///////////////////////////////////////////////////////////////////////////////
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DEF_GM( return new DistantClipGM; )
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} // namespace skiagm
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