canvasbitmap.cxx

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#include <sal/config.h>
 
#include <cppuhelper/supportsservice.hxx>
 
#include "canvasbitmap.hxx"
 
 
using namespace ::com::sun::star;
 
 
namespace vclcanvas
{
    // Currently, the only way to generate an XBitmap is from
    // XGraphicDevice.getCompatibleBitmap(). Therefore, we don't even
    // take a bitmap here, but a VDev directly.
    CanvasBitmap::CanvasBitmap( const ::Size&                  rSize,
                                bool                           bAlphaBitmap,
                                rendering::XGraphicDevice&     rDevice,
                                const OutDevProviderSharedPtr& rOutDevProvider )
    {
        // create bitmap for given reference device
        // ========================================
        Bitmap aBitmap(rSize, vcl::PixelFormat::N24_BPP);
 
        // only create alpha channel bitmap, if factory requested
        // that. Providing alpha-channeled bitmaps by default has,
        // especially under VCL, a huge performance penalty (have to
        // use alpha VDev, then).
        if( bAlphaBitmap )
        {
            AlphaMask   aAlpha ( rSize );
 
            maCanvasHelper.init( BitmapEx( aBitmap, aAlpha ),
                                 rDevice,
                                 rOutDevProvider );
        }
        else
        {
            maCanvasHelper.init( BitmapEx( aBitmap ),
                                 rDevice,
                                 rOutDevProvider );
        }
    }
 
    CanvasBitmap::CanvasBitmap( const BitmapEx&                rBitmap,
                                rendering::XGraphicDevice&     rDevice,
                                const OutDevProviderSharedPtr& rOutDevProvider )
    {
        maCanvasHelper.init( rBitmap, rDevice, rOutDevProvider );
    }
 
 
    OUString SAL_CALL CanvasBitmap::getImplementationName(  )
    {
        return "VCLCanvas.CanvasBitmap";
    }
 
    sal_Bool SAL_CALL CanvasBitmap::supportsService( const OUString& ServiceName )
    {
        return cppu::supportsService( this, ServiceName );
    }
 
    uno::Sequence< OUString > SAL_CALL CanvasBitmap::getSupportedServiceNames(  )
    {
        return { "com.sun.star.rendering.CanvasBitmap" };
    }
 
    BitmapEx CanvasBitmap::getBitmap() const
    {
        SolarMutexGuard aGuard;
 
        // TODO(T3): Rework to use shared_ptr all over the place for
        // BmpEx. This is highly un-threadsafe
        return maCanvasHelper.getBitmap();
    }
 
    bool CanvasBitmap::repaint( const GraphicObjectSharedPtr& rGrf,
                                const rendering::ViewState&   viewState,
                                const rendering::RenderState& renderState,
                                const ::Point&                rPt,
                                const ::Size&                 rSz,
                                const GraphicAttr&            rAttr ) const
    {
        SolarMutexGuard aGuard;
 
        mbSurfaceDirty = true;
 
        return maCanvasHelper.repaint( rGrf, viewState, renderState, rPt, rSz, rAttr );
    }
 
    uno::Any SAL_CALL CanvasBitmap::getFastPropertyValue( sal_Int32 nHandle )
    {
        if( nHandle == 0 ) {
            BitmapEx* pBitmapEx = new BitmapEx( getBitmap() );
 
            return uno::Any( reinterpret_cast<sal_Int64>( pBitmapEx ) );
        }
 
        return uno::Any( sal_Int64(0) );
    }
}
 
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