canvas/source/cairo/cairo_surfaceprovider.hxx

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   9  * This file incorporates work covered by the following license notice:
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  18  */
  19
  20 #ifndef INCLUDED_CANVAS_SOURCE_CAIRO_CAIRO_SURFACEPROVIDER_HXX
  21 #define INCLUDED_CANVAS_SOURCE_CAIRO_CAIRO_SURFACEPROVIDER_HXX
  22
  23 #include <rtl/ref.hxx>
  24 #include <com/sun/star/uno/XInterface.hpp>
  25
  26 #include <vcl/cairo.hxx>
  27 #include <cairo.h>
  28
  29 class OutputDevice;
  30 class Bitmap;
  31
  32 namespace cairocanvas
  33 {
  34     class Bitmap;
  35
  36     /* Definition of RepaintTarget interface */
  37
  38     /** Target interface for XCachedPrimitive implementations
  39
  40         This interface must be implemented on all canvas
  41         implementations that hand out XCachedPrimitives
  42      */
  43     class SurfaceProvider : public ::com::sun::star::uno::XInterface
  44     {
  45     public:
  46         virtual ~SurfaceProvider() {}
  47
  48         /** Query surface from this provider
  49
  50             This should return the default surface to render on.
  51          */
  52         virtual ::cairo::SurfaceSharedPtr getSurface() = 0;
  53
  54         /// create new surface in given size
  55         virtual ::cairo::SurfaceSharedPtr createSurface( const ::basegfx::B2ISize& rSize,
  56                                                          int aContent = CAIRO_CONTENT_COLOR_ALPHA ) = 0;
  57         /// create new surface from given bitmap
  58         virtual ::cairo::SurfaceSharedPtr createSurface( ::Bitmap& rBitmap ) = 0;
  59
  60         /** convert surface between alpha and non-alpha
  61             channel. returns new surface on success, NULL otherwise
  62         */
  63         virtual ::cairo::SurfaceSharedPtr changeSurface( bool bHasAlpha, bool bCopyContent ) = 0;
  64
  65         /** Provides the underlying vcl outputdevice this surface renders on
  66          */
  67         virtual OutputDevice* getOutputDevice() = 0;
  68     };
  69
  70     typedef ::rtl::Reference< SurfaceProvider > SurfaceProviderRef;
  71 }
  72
  73 #endif
  74
  75 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */