canvas/source/cairo/cairo_cachedbitmap.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
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   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 <sal/config.h>
  21
  22 #include <com/sun/star/rendering/XCanvas.hpp>
  23 #include <com/sun/star/rendering/RepaintResult.hpp>
  24 #include <utility>
  25 #include <comphelper/diagnose_ex.hxx>
  26
  27 #include "cairo_cachedbitmap.hxx"
  28 #include "cairo_repainttarget.hxx"
  29
  30
  31 using namespace ::cairo;
  32 using namespace ::com::sun::star;
  33
  34 namespace cairocanvas
  35 {
  36     CachedBitmap::CachedBitmap( SurfaceSharedPtr                            pSurface,
  37                                 const rendering::ViewState&                 rUsedViewState,
  38                                 rendering::RenderState                      aUsedRenderState,
  39                                 const uno::Reference< rendering::XCanvas >& rTarget ) :
  40         CachedPrimitiveBase( rUsedViewState, rTarget ),
  41         mpSurface(std::move( pSurface )),
  42         maRenderState(std::move( aUsedRenderState ))
  43     {}
  44
  45     void CachedBitmap::disposing(std::unique_lock<std::mutex>& rGuard)
  46     {
  47         mpSurface.reset();
  48         CachedPrimitiveBase::disposing(rGuard);
  49     }
  50
  51     ::sal_Int8 CachedBitmap::doRedraw( const rendering::ViewState&                  rNewState,
  52                                        const rendering::ViewState&                  /*rOldState*/,
  53                                        const uno::Reference< rendering::XCanvas >&  rTargetCanvas,
  54                                        bool                                         bSameViewTransform )
  55     {
  56         ENSURE_OR_THROW( bSameViewTransform,
  57                           "CachedBitmap::doRedraw(): base called with changed view transform "
  58                           "(told otherwise during construction)" );
  59
  60         RepaintTarget* pTarget = dynamic_cast< RepaintTarget* >(rTargetCanvas.get());
  61
  62         ENSURE_OR_THROW( pTarget,
  63                           "CachedBitmap::redraw(): cannot cast target to RepaintTarget" );
  64
  65         if( !pTarget->repaint( mpSurface,
  66                                rNewState,
  67                                maRenderState ) )
  68         {
  69             // target failed to repaint
  70             return rendering::RepaintResult::FAILED;
  71         }
  72
  73         return rendering::RepaintResult::REDRAWN;
  74     }
  75 }
  76
  77 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */