canvas/source/cairo/cairo_xlib_cairo.hxx

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  30
  31 #ifndef _CAIROCANVAS_XLIB_CAIRO_HXX
  32 #define _CAIROCANVAS_XLIB_CAIRO_HXX
  33
  34 #include "cairo_cairo.hxx"
  35
  36 struct SystemEnvData;
  37 struct SystemGraphicsData;
  38
  39 namespace cairo {
  40
  41     /// Holds all X11-output relevant data
  42     struct X11SysData
  43     {
  44         X11SysData();
  45         explicit X11SysData( const SystemGraphicsData& );
  46         explicit X11SysData( const SystemEnvData& );
  47
  48         void*   pDisplay;               // the relevant display connection
  49         long    hDrawable;      // a drawable
  50         void*   pVisual;                // the visual in use
  51         int     nScreen;                // the current screen of the drawable
  52         int             nDepth;                 // depth of said visual
  53         long    aColormap;              // the colormap being used
  54         void*   pRenderFormat;  // render format for drawable
  55     };
  56
  57     /// RAII wrapper for a pixmap
  58     struct X11Pixmap
  59     {
  60         void* mpDisplay;  // the relevant display connection
  61         long  mhDrawable; // a drawable
  62
  63         X11Pixmap( long hDrawable, void* pDisplay ) :
  64             mpDisplay(pDisplay),
  65             mhDrawable(hDrawable)
  66         {}
  67
  68         ~X11Pixmap();
  69
  70         void clear() { mpDisplay=NULL; mhDrawable=0; }
  71     };
  72
  73     typedef boost::shared_ptr<X11Pixmap>       X11PixmapSharedPtr;
  74
  75     class X11Surface : public Surface
  76     {
  77         const X11SysData      maSysData;
  78         X11PixmapSharedPtr    mpPixmap;
  79         CairoSurfaceSharedPtr mpSurface;
  80
  81         X11Surface( const X11SysData& rSysData, const X11PixmapSharedPtr& rPixmap, const CairoSurfaceSharedPtr& pSurface );
  82
  83     public:
  84         /// takes over ownership of passed cairo_surface
  85         explicit X11Surface( const CairoSurfaceSharedPtr& pSurface );
  86         /// create surface on subarea of given drawable
  87         X11Surface( const X11SysData& rSysData, int x, int y, int width, int height );
  88         /// create surface for given bitmap data
  89         X11Surface( const X11SysData& rSysData, const BitmapSystemData& rBmpData );
  90
  91         // Surface interface
  92         virtual CairoSharedPtr getCairo() const;
  93         virtual CairoSurfaceSharedPtr getCairoSurface() const { return mpSurface; }
  94         virtual SurfaceSharedPtr getSimilar( Content aContent, int width, int height ) const;
  95
  96         virtual boost::shared_ptr<VirtualDevice> createVirtualDevice() const;
  97
  98         virtual void Resize( int width, int height );
  99
 100         virtual void flush() const;
 101
 102         int getDepth() const;
 103         X11PixmapSharedPtr getPixmap() const { return mpPixmap; }
 104         void* getRenderFormat() const { return maSysData.pRenderFormat; }
 105         long getDrawable() const { return mpPixmap ? mpPixmap->mhDrawable : maSysData.hDrawable; }
 106     };
 107 }
 108
 109 #endif