xref: /aoo42x/main/canvas/source/cairo/cairo_xlib_cairo.hxx (revision 91c99ff4)

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 * Licensed to the Apache Software Foundation (ASF) under one
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 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
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#ifndef _CAIROCANVAS_XLIB_CAIRO_HXX
#define _CAIROCANVAS_XLIB_CAIRO_HXX

#include "cairo_cairo.hxx"

struct SystemEnvData;
struct SystemGraphicsData;

namespace cairo {

    /// Holds all X11-output relevant data
    struct X11SysData
    {
        X11SysData();
        explicit X11SysData( const SystemGraphicsData& );
        explicit X11SysData( const SystemEnvData& );

        void*	pDisplay;		// the relevant display connection
        long	hDrawable;      // a drawable
        void*	pVisual;		// the visual in use
        int	nScreen;		// the current screen of the drawable
        int		nDepth; 		// depth of said visual
        long	aColormap;		// the colormap being used
        void*	pRenderFormat;  // render format for drawable
    };

    /// RAII wrapper for a pixmap
    struct X11Pixmap
    {
        void* mpDisplay;  // the relevant display connection
        long  mhDrawable; // a drawable

        X11Pixmap( long hDrawable, void* pDisplay ) :
            mpDisplay(pDisplay),
            mhDrawable(hDrawable)
        {}

        ~X11Pixmap();

        void clear() { mpDisplay=NULL; mhDrawable=0; }
    };

    typedef boost::shared_ptr<X11Pixmap>       X11PixmapSharedPtr;

	class X11Surface : public Surface
    {
		const X11SysData      maSysData;
        X11PixmapSharedPtr    mpPixmap;
		CairoSurfaceSharedPtr mpSurface;

		X11Surface( const X11SysData& rSysData, const X11PixmapSharedPtr& rPixmap, const CairoSurfaceSharedPtr& pSurface );

	public:
        /// takes over ownership of passed cairo_surface
		explicit X11Surface( const CairoSurfaceSharedPtr& pSurface );
        /// create surface on subarea of given drawable
		X11Surface( const X11SysData& rSysData, int x, int y, int width, int height );
        /// create surface for given bitmap data
		X11Surface( const X11SysData& rSysData, const BitmapSystemData& rBmpData );

        // Surface interface
		virtual CairoSharedPtr getCairo() const;
		virtual CairoSurfaceSharedPtr getCairoSurface() const { return mpSurface; }
		virtual SurfaceSharedPtr getSimilar( Content aContent, int width, int height ) const;

        virtual boost::shared_ptr<VirtualDevice> createVirtualDevice() const;

		virtual void Resize( int width, int height );

        virtual void flush() const;

		int getDepth() const;
		X11PixmapSharedPtr getPixmap() const { return mpPixmap; }
		void* getRenderFormat() const { return maSysData.pRenderFormat; }
        long getDrawable() const { return mpPixmap ? mpPixmap->mhDrawable : maSysData.hDrawable; }
	};
}

#endif