canvas/source/cairo/cairo_xlib_cairo.hxx

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   9  * This file incorporates work covered by the following license notice:
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  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef _CAIROCANVAS_XLIB_CAIRO_HXX
  21 #define _CAIROCANVAS_XLIB_CAIRO_HXX
  22
  23 #include "cairo_cairo.hxx"
  24
  25 struct SystemEnvData;
  26 struct SystemGraphicsData;
  27
  28 namespace cairo {
  29
  30     /// Holds all X11-output relevant data
  31     struct X11SysData
  32     {
  33         X11SysData();
  34         explicit X11SysData( const SystemGraphicsData& );
  35         explicit X11SysData( const SystemEnvData& );
  36
  37         void*   pDisplay;       // the relevant display connection
  38         long    hDrawable;      // a drawable
  39         void*   pVisual;        // the visual in use
  40         int nScreen;        // the current screen of the drawable
  41         int     nDepth;         // depth of said visual
  42         long    aColormap;      // the colormap being used
  43         void*   pRenderFormat;  // render format for drawable
  44     };
  45
  46     /// RAII wrapper for a pixmap
  47     struct X11Pixmap
  48     {
  49         void* mpDisplay;  // the relevant display connection
  50         long  mhDrawable; // a drawable
  51
  52         X11Pixmap( long hDrawable, void* pDisplay ) :
  53             mpDisplay(pDisplay),
  54             mhDrawable(hDrawable)
  55         {}
  56
  57         ~X11Pixmap();
  58
  59         void clear() { mpDisplay=NULL; mhDrawable=0; }
  60     };
  61
  62     typedef boost::shared_ptr<X11Pixmap>       X11PixmapSharedPtr;
  63
  64     class X11Surface : public Surface
  65     {
  66         const X11SysData      maSysData;
  67         X11PixmapSharedPtr    mpPixmap;
  68         CairoSurfaceSharedPtr mpSurface;
  69
  70         X11Surface( const X11SysData& rSysData, const X11PixmapSharedPtr& rPixmap, const CairoSurfaceSharedPtr& pSurface );
  71
  72     public:
  73         /// takes over ownership of passed cairo_surface
  74         explicit X11Surface( const CairoSurfaceSharedPtr& pSurface );
  75         /// create surface on subarea of given drawable
  76         X11Surface( const X11SysData& rSysData, int x, int y, int width, int height );
  77         /// create surface for given bitmap data
  78         X11Surface( const X11SysData& rSysData, const BitmapSystemData& rBmpData );
  79
  80         // Surface interface
  81         virtual CairoSharedPtr getCairo() const;
  82         virtual CairoSurfaceSharedPtr getCairoSurface() const { return mpSurface; }
  83         virtual SurfaceSharedPtr getSimilar( Content aContent, int width, int height ) const;
  84
  85         virtual boost::shared_ptr<VirtualDevice> createVirtualDevice() const;
  86
  87         virtual void Resize( int width, int height );
  88
  89         virtual void flush() const;
  90
  91         int getDepth() const;
  92         X11PixmapSharedPtr getPixmap() const { return mpPixmap; }
  93         void* getRenderFormat() const { return maSysData.pRenderFormat; }
  94         long getDrawable() const { return mpPixmap ? mpPixmap->mhDrawable : maSysData.hDrawable; }
  95     };
  96 }
  97
  98 #endif
  99
 100 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */