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
  21 #include <canvas/debug.hxx>
  22 #include <tools/diagnose_ex.h>
  23
  24 #include "cachedbitmap.hxx"
  25 #include "repainttarget.hxx"
  26
  27 #include <com/sun/star/rendering/RepaintResult.hpp>
  28 #include <com/sun/star/rendering/XPolyPolygon2D.hpp>
  29
  30 #include <basegfx/matrix/b2dhommatrix.hxx>
  31 #include <basegfx/tools/canvastools.hxx>
  32
  33
  34 using namespace ::com::sun::star;
  35
  36 namespace vclcanvas
  37 {
  38     CachedBitmap::CachedBitmap( const GraphicObjectSharedPtr&               rGraphicObject,
  39                                 const ::Point&                              rPoint,
  40                                 const ::Size&                               rSize,
  41                                 const GraphicAttr&                          rAttr,
  42                                 const rendering::ViewState&                 rUsedViewState,
  43                                 const rendering::RenderState&               rUsedRenderState,
  44                                 const uno::Reference< rendering::XCanvas >& rTarget ) :
  45         CachedPrimitiveBase( rUsedViewState, rTarget, true ),
  46         mpGraphicObject( rGraphicObject ),
  47         maRenderState(rUsedRenderState),
  48         maPoint( rPoint ),
  49         maSize( rSize ),
  50         maAttributes( rAttr )
  51     {
  52     }
  53
  54     void SAL_CALL CachedBitmap::disposing()
  55     {
  56         ::osl::MutexGuard aGuard( m_aMutex );
  57
  58         mpGraphicObject.reset();
  59
  60         CachedPrimitiveBase::disposing();
  61     }
  62
  63     ::sal_Int8 CachedBitmap::doRedraw( const rendering::ViewState&                  rNewState,
  64                                        const rendering::ViewState&                  rOldState,
  65                                        const uno::Reference< rendering::XCanvas >&  rTargetCanvas,
  66                                        bool                                         bSameViewTransform )
  67     {
  68         ENSURE_OR_THROW( bSameViewTransform,
  69                          "CachedBitmap::doRedraw(): base called with changed view transform "
  70                          "(told otherwise during construction)" );
  71
  72         // TODO(P1): Could adapt to modified clips as well
  73         if( rNewState.Clip != rOldState.Clip )
  74             return rendering::RepaintResult::FAILED;
  75
  76         RepaintTarget* pTarget = dynamic_cast< RepaintTarget* >(rTargetCanvas.get());
  77
  78         ENSURE_OR_THROW( pTarget,
  79                           "CachedBitmap::redraw(): cannot cast target to RepaintTarget" );
  80
  81         if( !pTarget->repaint( mpGraphicObject,
  82                                rNewState,
  83                                maRenderState,
  84                                maPoint,
  85                                maSize,
  86                                maAttributes ) )
  87         {
  88             // target failed to repaint
  89             return rendering::RepaintResult::FAILED;
  90         }
  91
  92         return rendering::RepaintResult::REDRAWN;
  93     }
  94 }
  95
  96 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */