/*

 * Copyright 2014 Google Inc.

 *

 * Use of this source code is governed by a BSD-style license that can be

 * found in the LICENSE file.

 */

#ifndef SkPicturePlayback_DEFINED

#define SkPicturePlayback_DEFINED

#include "src/core/SkPictureFlat.h"

class SkBitmap;

class SkCanvas;

class SkPaint;

class SkPictureData;

// The basic picture playback class replays the provided picture into a canvas.

class SkPicturePlayback final : SkNoncopyable {

public:

    SkPicturePlayback(const SkPictureData* data)

        : fPictureData(data)

        , fCurOffset(0) {

    }

    void draw(SkCanvas* canvas, SkPicture::AbortCallback*, SkReadBuffer* buffer);

    // TODO: remove the curOp calls after cleaning up GrGatherDevice

    // Return the ID of the operation currently being executed when playing

    // back. 0 indicates no call is active.

    size_t curOpID() const { return fCurOffset; }

    void resetOpID() { fCurOffset = 0; }

protected:

    const SkPictureData* fPictureData;

    // The offset of the current operation when within the draw method

    size_t fCurOffset;

    void handleOp(SkReadBuffer* reader,

                  DrawType op,

                  uint32_t size,

                  SkCanvas* canvas,

                  const SkM44& initialMatrix);

    class AutoResetOpID {

    public:

        AutoResetOpID(SkPicturePlayback* playback) : fPlayback(playback) { }

        ~AutoResetOpID() {

            if (fPlayback) {

                fPlayback->resetOpID();

            }

        }

    private:

        SkPicturePlayback* fPlayback;

    };

private:

    using INHERITED = SkNoncopyable;

};

#endif