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27 
28 #ifndef _CAIROCANVAS_SURFACEPROVIDER_HXX
29 #define _CAIROCANVAS_SURFACEPROVIDER_HXX
30 
31 #include <rtl/ref.hxx>
32 #include <com/sun/star/uno/XInterface.hpp>
33 
34 #include "cairo_cairo.hxx"
35 
36 using namespace ::cairo;
37 
38 class OutputDevice;
39 class Bitmap;
40 
41 namespace cairocanvas
42 {
43     class Bitmap;
44 
45 	/* Definition of RepaintTarget interface */
46 
47     /** Target interface for XCachedPrimitive implementations
48 
49     	This interface must be implemented on all canvas
50     	implementations that hand out XCachedPrimitives
51      */
52     class SurfaceProvider : public ::com::sun::star::uno::XInterface
53     {
54     public:
55         virtual ~SurfaceProvider() {}
56 
57         /** Query surface from this provider
58 
59             This should return the default surface to render on.
60          */
61 		virtual SurfaceSharedPtr getSurface() = 0;
62 
63         /// create new surface in given size
64 		virtual SurfaceSharedPtr createSurface( const ::basegfx::B2ISize& rSize,
65                                                 Content aContent = CAIRO_CONTENT_COLOR_ALPHA ) = 0;
66         /// create new surface from given bitmap
67         virtual SurfaceSharedPtr createSurface( ::Bitmap& rBitmap ) = 0;
68 
69         /** convert surface between alpha and non-alpha
70             channel. returns new surface on success, NULL otherwise
71         */
72 		virtual SurfaceSharedPtr changeSurface( bool bHasAlpha, bool bCopyContent ) = 0;
73 
74         /** Provides the underlying vcl outputdevice this surface renders on
75          */
76 		virtual OutputDevice* getOutputDevice() = 0;
77     };
78 
79     typedef ::rtl::Reference< SurfaceProvider > SurfaceProviderRef;
80 }
81 
82 #endif
83