xref: /trunk/main/canvas/source/cairo/cairo_spritehelper.hxx (revision cdf0e10c)

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#ifndef _CAIROCANVAS_SPRITEHELPER_HXX
#define _CAIROCANVAS_SPRITEHELPER_HXX

#include <com/sun/star/rendering/XCustomSprite.hpp>

#include <canvas/base/canvascustomspritehelper.hxx>

#include <basegfx/point/b2dpoint.hxx>
#include <basegfx/vector/b2isize.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>

#include "cairo_spritecanvas.hxx"


namespace cairocanvas
{
	/* Definition of SpriteHelper class */

    /** Helper class for canvas sprites.

    	This class implements all sprite-related functionality, like
    	that available on the XSprite interface.
     */
    class SpriteHelper : public ::canvas::CanvasCustomSpriteHelper
    {
    public:
        /** Create sprite helper
         */
        SpriteHelper();

        /** Late-init the sprite helper

        	@param rSpriteSize
            Size of the sprite

            @param rSpriteCanvas
            Sprite canvas this sprite is part of. Object stores
            ref-counted reference to it, thus, don't forget to pass on
            disposing()!

            @param rDevice
            DX device to use

            @param rSpriteSurface
            The surface of the sprite (not the DX texture, but the
            persistent target of content rendering)

            @param bShowSpriteBounds
            When true, little debug bound rects for sprites are shown
         */
        void init( const ::com::sun::star::geometry::RealSize2D& rSpriteSize,
                   const SpriteCanvasRef&					     rSpriteCanvas );

        void disposing();

		void setSurface( const ::cairo::SurfaceSharedPtr& pBufferSurface );

        /** Repaint sprite content to associated sprite canvas

        	@param rPos
            Output position (sprite's own position is disregarded)

            @param io_bSurfacesDirty
            When true, the referenced sprite surfaces (backBuffer and
            backBufferMask) have been modified since last call.

            @param bBufferedUpdate
            When true, the redraw does <em>not</em> happen directly on
            the front buffer, but within a VDev. Used to speed up
            drawing.
         */
        void redraw( const ::cairo::CairoSharedPtr& pCairo,
                     const ::basegfx::B2DPoint&     rPos,
                     bool& 						    bSurfacesDirty,
                     bool                           bBufferedUpdate ) const;

    private:
        virtual ::basegfx::B2DPolyPolygon polyPolygonFromXPolyPolygon2D(
            ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XPolyPolygon2D >& xPoly ) const;


        SpriteCanvasRef           mpSpriteCanvas;
        ::cairo::SurfaceSharedPtr mpBufferSurface;
        mutable bool              mbTextureDirty;  // when true, texture needs update
    };
}

#endif /* _CAIROCANVAS_SPRITEHELPER_HXX */