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 *   Licensed to the Apache Software Foundation (ASF) under one or more
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#ifndef INCLUDED_SD_SOURCE_UI_SLIDESORTER_VIEW_SLSLAYEREDDEVICE_HXX
#define INCLUDED_SD_SOURCE_UI_SLIDESORTER_VIEW_SLSLAYEREDDEVICE_HXX

#include "view/SlsILayerPainter.hxx"
#include "SlideSorter.hxx"

#include <vcl/region.hxx>
#include <vcl/virdev.hxx>

#include <memory>
#include <vector>

class Rectangle;

namespace sd { namespace slidesorter { namespace view {

/** A simple wrapper around an OutputDevice that provides support for
    independent layers and buffering.
    Each layer may contain any number of painters.
*/
class LayeredDevice
    : public std::enable_shared_from_this<LayeredDevice>

{
public:
    explicit LayeredDevice (VclPtr<sd::Window> pTargetWindow);
    ~LayeredDevice ();

    void Invalidate (
        const Rectangle& rInvalidationBox,
        const sal_Int32 nLayer);
    void InvalidateAllLayers (
        const Rectangle& rInvalidationBox);
    void InvalidateAllLayers (
        const vcl::Region& rInvalidationRegion);

    void RegisterPainter (
        const SharedILayerPainter& rPainter,
        const sal_Int32 nLayer);

    void RemovePainter (
        const SharedILayerPainter& rPainter,
        const sal_Int32 nLayer);

    bool HandleMapModeChange();
    void Repaint (const vcl::Region& rRepaintRegion);

    void Resize();

    void Dispose();

private:
    VclPtr<sd::Window> mpTargetWindow;
    class LayerContainer;
    std::unique_ptr<LayerContainer> mpLayers;
    ScopedVclPtr<VirtualDevice> mpBackBuffer;
    MapMode maSavedMapMode;

    void RepaintRectangle (const Rectangle& rRepaintRectangle);
};

} } } // end of namespace ::sd::slidesorter::view

#endif

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