third_party/WebKit/Source/platform/graphics/ReplayingCanvas.h

/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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 *
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#ifndef ReplayingCanvas_h
#define ReplayingCanvas_h

#include "platform/graphics/InterceptingCanvas.h"
#include "third_party/skia/include/core/SkPaint.h"
#include "third_party/skia/include/core/SkPicture.h"

namespace blink {

class ReplayingCanvas;

template<> class CanvasInterceptor<ReplayingCanvas> : protected InterceptingCanvasBase::CanvasInterceptorBase<ReplayingCanvas> {
public:
    CanvasInterceptor(InterceptingCanvasBase* canvas) : InterceptingCanvasBase::CanvasInterceptorBase<ReplayingCanvas>(canvas) { }
    ~CanvasInterceptor();
};

class ReplayingCanvas : public InterceptingCanvas<ReplayingCanvas>, public SkPicture::AbortCallback {
public:
    ReplayingCanvas(SkBitmap, unsigned fromStep, unsigned toStep);

    bool abort() override;
    SkCanvas::SaveLayerStrategy getSaveLayerStrategy(const SaveLayerRec&) override;
    void onDrawPicture(const SkPicture*, const SkMatrix*, const SkPaint*) override;

private:
    friend class CanvasInterceptor<ReplayingCanvas>;

    void updateInRange();

    unsigned m_fromStep;
    unsigned m_toStep;
    bool m_abortDrawing;
};

} // namespace blink

#endif // ReplayingCanvas_h