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#ifndef SD_SLIDESORTER_VIEW_LAYERED_DEVICE_HXX
#define SD_SLIDESORTER_VIEW_LAYERED_DEVICE_HXX

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

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

#include <boost/noncopyable.hpp>
#include <boost/scoped_ptr.hpp>
#include <boost/shared_ptr.hpp>
#include <boost/enable_shared_from_this.hpp>
#include <vector>

class Window;

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 ::boost::enable_shared_from_this<LayeredDevice>

{
public:
	LayeredDevice (const SharedSdWindow& rpTargetWindow);
	~LayeredDevice (void);

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

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

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

	bool HasPainter (const sal_Int32 nLayer);

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

	void Resize (void);

	void Dispose (void);

private:
	SharedSdWindow mpTargetWindow;
	class LayerContainer;
	::boost::scoped_ptr<LayerContainer> mpLayers;
	::boost::scoped_ptr<VirtualDevice> mpBackBuffer;
	MapMode maSavedMapMode;

	void RepaintRectangle (const Rectangle& rRepaintRectangle);
};



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

#endif