canvas/source/vcl/canvasbitmap.cxx

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  30
  31 // MARKER(update_precomp.py): autogen include statement, do not remove
  32 #include "precompiled_canvas.hxx"
  33
  34 #include <canvas/debug.hxx>
  35 #include <tools/diagnose_ex.h>
  36 #include "canvasbitmap.hxx"
  37
  38 #include <vcl/bmpacc.hxx>
  39
  40 using namespace ::com::sun::star;
  41
  42
  43 namespace vclcanvas
  44 {
  45     // Currently, the only way to generate an XBitmap is from
  46     // XGraphicDevice.getCompatibleBitmap(). Therefore, we don't even
  47     // take a bitmap here, but a VDev directly.
  48     CanvasBitmap::CanvasBitmap( const ::Size&                  rSize,
  49                                 bool                           bAlphaBitmap,
  50                                 rendering::XGraphicDevice&     rDevice,
  51                                 const OutDevProviderSharedPtr& rOutDevProvider )
  52     {
  53         // create bitmap for given reference device
  54         // ========================================
  55         const USHORT nBitCount( (USHORT)24U );
  56         const BitmapPalette*    pPalette = NULL;
  57
  58         Bitmap aBitmap( rSize, nBitCount, pPalette );
  59
  60         // only create alpha channel bitmap, if factory requested
  61         // that. Providing alpha-channeled bitmaps by default has,
  62         // especially under VCL, a huge performance penalty (have to
  63         // use alpha VDev, then).
  64         if( bAlphaBitmap )
  65         {
  66             AlphaMask   aAlpha ( rSize );
  67
  68             maCanvasHelper.init( BitmapEx( aBitmap, aAlpha ),
  69                                  rDevice,
  70                                  rOutDevProvider );
  71         }
  72         else
  73         {
  74             maCanvasHelper.init( BitmapEx( aBitmap ),
  75                                  rDevice,
  76                                  rOutDevProvider );
  77         }
  78     }
  79
  80     CanvasBitmap::CanvasBitmap( const BitmapEx&                rBitmap,
  81                                 rendering::XGraphicDevice&     rDevice,
  82                                 const OutDevProviderSharedPtr& rOutDevProvider )
  83     {
  84         maCanvasHelper.init( rBitmap, rDevice, rOutDevProvider );
  85     }
  86
  87     void SAL_CALL CanvasBitmap::disposing()
  88     {
  89         // forward to base
  90         CanvasBitmap_Base::disposing();
  91     }
  92
  93 #define IMPLEMENTATION_NAME "VCLCanvas.CanvasBitmap"
  94 #define SERVICE_NAME "com.sun.star.rendering.CanvasBitmap"
  95
  96     ::rtl::OUString SAL_CALL CanvasBitmap::getImplementationName(  ) throw (uno::RuntimeException)
  97     {
  98         return ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( IMPLEMENTATION_NAME ) );
  99     }
 100
 101     sal_Bool SAL_CALL CanvasBitmap::supportsService( const ::rtl::OUString& ServiceName ) throw (uno::RuntimeException)
 102     {
 103         return ServiceName.equalsAsciiL( RTL_CONSTASCII_STRINGPARAM ( SERVICE_NAME ) );
 104     }
 105
 106     uno::Sequence< ::rtl::OUString > SAL_CALL CanvasBitmap::getSupportedServiceNames(  ) throw (uno::RuntimeException)
 107     {
 108         uno::Sequence< ::rtl::OUString > aRet(1);
 109         aRet[0] = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM ( SERVICE_NAME ) );
 110
 111         return aRet;
 112     }
 113
 114     BitmapEx CanvasBitmap::getBitmap() const
 115     {
 116         tools::LocalGuard aGuard;
 117
 118         // TODO(T3): Rework to use shared_ptr all over the place for
 119         // BmpEx. This is highly un-threadsafe
 120         return maCanvasHelper.getBitmap();
 121     }
 122
 123     bool CanvasBitmap::repaint( const GraphicObjectSharedPtr& rGrf,
 124                                 const rendering::ViewState&   viewState,
 125                                 const rendering::RenderState& renderState,
 126                                 const ::Point&                rPt,
 127                                 const ::Size&                 rSz,
 128                                 const GraphicAttr&            rAttr ) const
 129     {
 130         tools::LocalGuard aGuard;
 131
 132         mbSurfaceDirty = true;
 133
 134         return maCanvasHelper.repaint( rGrf, viewState, renderState, rPt, rSz, rAttr );
 135     }
 136
 137     uno::Any SAL_CALL CanvasBitmap::getFastPropertyValue( sal_Int32 nHandle ) throw (uno::RuntimeException)
 138     {
 139         if( nHandle == 0 ) {
 140             BitmapEx* pBitmapEx = new BitmapEx( getBitmap() );
 141
 142             return uno::Any( reinterpret_cast<sal_Int64>( pBitmapEx ) );
 143         }
 144
 145         return uno::Any( sal_Int64(0) );
 146     }
 147 }