canvas/source/cairo/cairo_cairo.hxx

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  30
  31 #ifndef _CAIROCANVAS_CAIRO_HXX
  32 #define _CAIROCANVAS_CAIRO_HXX
  33
  34 #include <sal/config.h>
  35 #include <boost/shared_ptr.hpp>
  36
  37 struct SystemEnvData;
  38 struct BitmapSystemData;
  39 struct SystemGraphicsData;
  40 class  VirtualDevice;
  41 class  OutputDevice;
  42 class  Window;
  43 class  Size;
  44
  45 #include <cairo.h>  //cannot be inside a namespace, otherwise Quartz fails to compile.
  46
  47 namespace cairo {
  48     typedef cairo_t Cairo;
  49     typedef cairo_matrix_t Matrix;
  50     typedef cairo_format_t Format;
  51     typedef cairo_content_t Content;
  52     typedef cairo_pattern_t Pattern;
  53
  54     typedef boost::shared_ptr<cairo_surface_t> CairoSurfaceSharedPtr;
  55     typedef boost::shared_ptr<Cairo>           CairoSharedPtr;
  56
  57     const SystemEnvData* GetSysData(const Window *pOutputWindow);
  58
  59     /** Cairo surface interface
  60
  61         For each cairo-supported platform, there's an implementation of
  62         this interface
  63      */
  64     struct Surface
  65     {
  66     public:
  67         virtual ~Surface() {}
  68
  69         // Query methods
  70         virtual CairoSharedPtr getCairo() const = 0;
  71         virtual CairoSurfaceSharedPtr getCairoSurface() const = 0;
  72         virtual boost::shared_ptr<Surface> getSimilar( Content aContent, int width, int height ) const = 0;
  73
  74         /// factory for VirDev on this surface
  75         virtual boost::shared_ptr<VirtualDevice> createVirtualDevice() const = 0;
  76
  77         /// Resize the surface (possibly destroying content)
  78         virtual void Resize( int width, int height ) = 0;
  79
  80         /// Flush all pending output to surface
  81         virtual void flush() const = 0;
  82     };
  83
  84     typedef boost::shared_ptr<Surface> SurfaceSharedPtr;
  85
  86     /// Create Surface from given cairo surface
  87     SurfaceSharedPtr createSurface( const CairoSurfaceSharedPtr& rSurface );
  88     /// Create surface with given dimensions
  89     SurfaceSharedPtr createSurface( const OutputDevice& rRefDevice,
  90                                     int x, int y, int width, int height );
  91     /// Create Surface for given bitmap data
  92     SurfaceSharedPtr createBitmapSurface( const OutputDevice& rRefDevice,
  93                                           const BitmapSystemData& rData,
  94                                           const Size&             rSize );
  95
  96     /// Check whether cairo will work on given window
  97     bool IsCairoWorking( OutputDevice* );
  98 }
  99
 100 #endif