canvas/source/cairo/cairo_cachedbitmap.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 #include <canvas/debug.hxx>
  21 #include <tools/diagnose_ex.h>
  22
  23 #include "cairo_cachedbitmap.hxx"
  24 #include "cairo_repainttarget.hxx"
  25
  26 #include <com/sun/star/rendering/RepaintResult.hpp>
  27 #include <com/sun/star/rendering/XPolyPolygon2D.hpp>
  28
  29 #include <basegfx/matrix/b2dhommatrix.hxx>
  30 #include <basegfx/tools/canvastools.hxx>
  31
  32
  33 using namespace ::cairo;
  34 using namespace ::com::sun::star;
  35
  36 namespace cairocanvas
  37 {
  38     CachedBitmap::CachedBitmap( const SurfaceSharedPtr&                     pSurface,
  39                                 const rendering::ViewState&                 rUsedViewState,
  40                                 const rendering::RenderState&               rUsedRenderState,
  41                                 const uno::Reference< rendering::XCanvas >& rTarget ) :
  42         CachedPrimitiveBase( rUsedViewState, rTarget, true ),
  43         mpSurface( pSurface ),
  44         maRenderState( rUsedRenderState )
  45     {}
  46
  47     void SAL_CALL CachedBitmap::disposing()
  48     {
  49         ::osl::MutexGuard aGuard( m_aMutex );
  50
  51         mpSurface.reset();
  52         CachedPrimitiveBase::disposing();
  53     }
  54
  55     ::sal_Int8 CachedBitmap::doRedraw( const rendering::ViewState&                  rNewState,
  56                                        const rendering::ViewState&                  /*rOldState*/,
  57                                        const uno::Reference< rendering::XCanvas >&  rTargetCanvas,
  58                                        bool                                         bSameViewTransform )
  59     {
  60         ENSURE_OR_THROW( bSameViewTransform,
  61                           "CachedBitmap::doRedraw(): base called with changed view transform "
  62                           "(told otherwise during construction)" );
  63
  64         RepaintTarget* pTarget = dynamic_cast< RepaintTarget* >(rTargetCanvas.get());
  65
  66         ENSURE_OR_THROW( pTarget,
  67                           "CachedBitmap::redraw(): cannot cast target to RepaintTarget" );
  68
  69         if( !pTarget->repaint( mpSurface,
  70                                rNewState,
  71                                maRenderState ) )
  72         {
  73             // target failed to repaint
  74             return rendering::RepaintResult::FAILED;
  75         }
  76
  77         return rendering::RepaintResult::REDRAWN;
  78     }
  79 }
  80
  81 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */