/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#ifndef INCLUDED_DRAWINGLAYER_SOURCE_PROCESSOR2D_VCLHELPERBUFFERDEVICE_HXX
#define INCLUDED_DRAWINGLAYER_SOURCE_PROCESSOR2D_VCLHELPERBUFFERDEVICE_HXX

#include <vcl/virdev.hxx>


// predefines

namespace basegfx { class B2DRange; }


// support methods for vcl direct gradient renderering

namespace drawinglayer
{
    class impBufferDevice
    {
        OutputDevice&                       mrOutDev;
        VirtualDevice*                      mpContent;
        VirtualDevice*                      mpMask;
        VirtualDevice*                      mpAlpha;
        Rectangle                           maDestPixel;

    public:
        impBufferDevice(
            OutputDevice& rOutDev,
            const basegfx::B2DRange& rRange,
            bool bAddOffsetToMapping);
        ~impBufferDevice();

        void paint(double fTrans = 0.0);
        bool isVisible() const { return !maDestPixel.IsEmpty(); }
        VirtualDevice& getContent();
        VirtualDevice& getMask();
        VirtualDevice& getTransparence();
    };
} // end of namespace drawinglayer



#endif // INCLUDED_DRAWINGLAYER_SOURCE_PROCESSOR2D_VCLHELPERBUFFERDEVICE_HXX

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