/*
 * Copyright 2015 Julian Harnath <julian.harnath@rwth-aachen.de>
 * All rights reserved. Distributed under the terms of the MIT license.
 */
#ifndef LAYER_H
#define LAYER_H


#include "ServerPicture.h"

#include "IntPoint.h"


class AlphaMask;
class Canvas;
class UtilityBitmap;


class Layer : public ServerPicture {
public:
                                                                Layer(uint8 opacity);
        virtual                                         ~Layer();

                        void                            PushLayer(Layer* layer);
                        Layer*                          PopLayer();

                        UtilityBitmap*          RenderToBitmap(Canvas* canvas);

                        IntPoint                        LeftTopOffset() const;
                        uint8                           Opacity() const;

private:
                        BRect                           _DetermineBoundingBox(Canvas* canvas);
                        UtilityBitmap*          _AllocateBitmap(const BRect& bounds);

private:
                        uint8                           fOpacity;
                        IntPoint                        fLeftTopOffset;
};


#endif // LAYER_H