canvas/source/vcl/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.
   4  *
   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 <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 "cachedbitmap.hxx"
  28 #include "repainttarget.hxx"
  29
  30
  31 using namespace ::com::sun::star;
  32
  33 namespace vclcanvas
  34 {
  35     CachedBitmap::CachedBitmap( GraphicObjectSharedPtr                      xGraphicObject,
  36                                 const ::Point&                              rPoint,
  37                                 const ::Size&                               rSize,
  38                                 const GraphicAttr&                          rAttr,
  39                                 const rendering::ViewState&                 rUsedViewState,
  40                                 rendering::RenderState                      aUsedRenderState,
  41                                 const uno::Reference< rendering::XCanvas >& rTarget ) :
  42         CachedPrimitiveBase( rUsedViewState, rTarget ),
  43         mpGraphicObject(std::move( xGraphicObject )),
  44         maRenderState(std::move(aUsedRenderState)),
  45         maPoint( rPoint ),
  46         maSize( rSize ),
  47         maAttributes( rAttr )
  48     {
  49     }
  50
  51     void CachedBitmap::disposing(std::unique_lock<std::mutex>& rGuard)
  52     {
  53         mpGraphicObject.reset();
  54
  55         CachedPrimitiveBase::disposing(rGuard);
  56     }
  57
  58     ::sal_Int8 CachedBitmap::doRedraw( const rendering::ViewState&                  rNewState,
  59                                        const rendering::ViewState&                  rOldState,
  60                                        const uno::Reference< rendering::XCanvas >&  rTargetCanvas,
  61                                        bool                                         bSameViewTransform )
  62     {
  63         ENSURE_OR_THROW( bSameViewTransform,
  64                          "CachedBitmap::doRedraw(): base called with changed view transform "
  65                          "(told otherwise during construction)" );
  66
  67         // TODO(P1): Could adapt to modified clips as well
  68         if( rNewState.Clip != rOldState.Clip )
  69             return rendering::RepaintResult::FAILED;
  70
  71         RepaintTarget* pTarget = dynamic_cast< RepaintTarget* >(rTargetCanvas.get());
  72
  73         ENSURE_OR_THROW( pTarget,
  74                           "CachedBitmap::redraw(): cannot cast target to RepaintTarget" );
  75
  76         if( !pTarget->repaint( mpGraphicObject,
  77                                rNewState,
  78                                maRenderState,
  79                                maPoint,
  80                                maSize,
  81                                maAttributes ) )
  82         {
  83             // target failed to repaint
  84             return rendering::RepaintResult::FAILED;
  85         }
  86
  87         return rendering::RepaintResult::REDRAWN;
  88     }
  89 }
  90
  91 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */