canvas/source/vcl/canvasbitmap.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
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   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20
  21 #include <canvas/debug.hxx>
  22 #include <tools/diagnose_ex.h>
  23 #include "canvasbitmap.hxx"
  24
  25 #include <vcl/bmpacc.hxx>
  26
  27 using namespace ::com::sun::star;
  28
  29
  30 namespace vclcanvas
  31 {
  32     // Currently, the only way to generate an XBitmap is from
  33     // XGraphicDevice.getCompatibleBitmap(). Therefore, we don't even
  34     // take a bitmap here, but a VDev directly.
  35     CanvasBitmap::CanvasBitmap( const ::Size&                  rSize,
  36                                 bool                           bAlphaBitmap,
  37                                 rendering::XGraphicDevice&     rDevice,
  38                                 const OutDevProviderSharedPtr& rOutDevProvider )
  39     {
  40         // create bitmap for given reference device
  41         // ========================================
  42         const sal_uInt16 nBitCount( (sal_uInt16)24U );
  43         const BitmapPalette*    pPalette = NULL;
  44
  45         Bitmap aBitmap( rSize, nBitCount, pPalette );
  46
  47         // only create alpha channel bitmap, if factory requested
  48         // that. Providing alpha-channeled bitmaps by default has,
  49         // especially under VCL, a huge performance penalty (have to
  50         // use alpha VDev, then).
  51         if( bAlphaBitmap )
  52         {
  53             AlphaMask   aAlpha ( rSize );
  54
  55             maCanvasHelper.init( BitmapEx( aBitmap, aAlpha ),
  56                                  rDevice,
  57                                  rOutDevProvider );
  58         }
  59         else
  60         {
  61             maCanvasHelper.init( BitmapEx( aBitmap ),
  62                                  rDevice,
  63                                  rOutDevProvider );
  64         }
  65     }
  66
  67     CanvasBitmap::CanvasBitmap( const BitmapEx&                rBitmap,
  68                                 rendering::XGraphicDevice&     rDevice,
  69                                 const OutDevProviderSharedPtr& rOutDevProvider )
  70     {
  71         maCanvasHelper.init( rBitmap, rDevice, rOutDevProvider );
  72     }
  73
  74 #define IMPLEMENTATION_NAME "VCLCanvas.CanvasBitmap"
  75 #define SERVICE_NAME "com.sun.star.rendering.CanvasBitmap"
  76
  77     OUString SAL_CALL CanvasBitmap::getImplementationName(  ) throw (uno::RuntimeException)
  78     {
  79         return OUString( IMPLEMENTATION_NAME );
  80     }
  81
  82     sal_Bool SAL_CALL CanvasBitmap::supportsService( const OUString& ServiceName ) throw (uno::RuntimeException)
  83     {
  84         return ServiceName == SERVICE_NAME;
  85     }
  86
  87     uno::Sequence< OUString > SAL_CALL CanvasBitmap::getSupportedServiceNames(  ) throw (uno::RuntimeException)
  88     {
  89         uno::Sequence< OUString > aRet(1);
  90         aRet[0] = OUString( SERVICE_NAME );
  91
  92         return aRet;
  93     }
  94
  95     BitmapEx CanvasBitmap::getBitmap() const
  96     {
  97         SolarMutexGuard aGuard;
  98
  99         // TODO(T3): Rework to use shared_ptr all over the place for
 100         // BmpEx. This is highly un-threadsafe
 101         return maCanvasHelper.getBitmap();
 102     }
 103
 104     bool CanvasBitmap::repaint( const GraphicObjectSharedPtr& rGrf,
 105                                 const rendering::ViewState&   viewState,
 106                                 const rendering::RenderState& renderState,
 107                                 const ::Point&                rPt,
 108                                 const ::Size&                 rSz,
 109                                 const GraphicAttr&            rAttr ) const
 110     {
 111         SolarMutexGuard aGuard;
 112
 113         mbSurfaceDirty = true;
 114
 115         return maCanvasHelper.repaint( rGrf, viewState, renderState, rPt, rSz, rAttr );
 116     }
 117
 118     uno::Any SAL_CALL CanvasBitmap::getFastPropertyValue( sal_Int32 nHandle ) throw (uno::RuntimeException)
 119     {
 120         if( nHandle == 0 ) {
 121             BitmapEx* pBitmapEx = new BitmapEx( getBitmap() );
 122
 123             return uno::Any( reinterpret_cast<sal_Int64>( pBitmapEx ) );
 124         }
 125
 126         return uno::Any( sal_Int64(0) );
 127     }
 128 }
 129
 130 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */