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19 
20 #ifndef INCLUDED_VCL_INC_SALVD_HXX
21 #define INCLUDED_VCL_INC_SALVD_HXX
22 
23 #include "salgeom.hxx"
24 
25 class SalGraphics;
26 
27 /// A non-visible drawable/buffer (e.g. an X11 Pixmap).
28 class VCL_PLUGIN_PUBLIC SalVirtualDevice
29         : public SalGeometryProvider
30 {
31 public:
SalVirtualDevice()32     SalVirtualDevice() {}
33     virtual ~SalVirtualDevice() override;
34 
35     // SalGeometryProvider
IsOffScreen() const36     virtual bool IsOffScreen() const override { return true; }
37 
38     // SalGraphics or NULL, but two Graphics for all SalVirtualDevices
39     // must be returned
40     virtual SalGraphics*    AcquireGraphics() = 0;
41     virtual void            ReleaseGraphics( SalGraphics* pGraphics ) = 0;
42 
43     // Set new size, without saving the old contents
44     virtual bool            SetSize( long nNewDX, long nNewDY ) = 0;
45 
46     // Set new size using a buffer at the given address
SetSizeUsingBuffer(long nNewDX,long nNewDY,sal_uInt8 *)47     virtual bool            SetSizeUsingBuffer( long nNewDX, long nNewDY,
48                                                 sal_uInt8 * /* pBuffer */)
49         {
50             // Only the headless virtual device has an implementation that uses
51             // pBuffer (and bTopDown).
52             return SetSize( nNewDX, nNewDY );
53         }
54 };
55 
56 #endif // INCLUDED_VCL_INC_SALVD_HXX
57 
58 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
59