xref: /AOO41X/main/canvas/source/vcl/cachedbitmap.cxx (revision 25ea7f451e822ec0589487f23a9b6cc31f03fcc3)

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 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
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 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_canvas.hxx"

#include <canvas/debug.hxx>
#include <tools/diagnose_ex.h>

#include "cachedbitmap.hxx"
#include "repainttarget.hxx"

#include <com/sun/star/rendering/RepaintResult.hpp>
#include <com/sun/star/rendering/XPolyPolygon2D.hpp>

#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/tools/canvastools.hxx>


using namespace ::com::sun::star;

namespace vclcanvas
{
    CachedBitmap::CachedBitmap( const GraphicObjectSharedPtr& 				rGraphicObject,
                                const ::Point& 								rPoint,
                                const ::Size& 								rSize,
                                const GraphicAttr&							rAttr,
                                const rendering::ViewState&	  				rUsedViewState,
                                const rendering::RenderState&	  			rUsedRenderState,
                                const uno::Reference< rendering::XCanvas >& rTarget ) :
        CachedPrimitiveBase( rUsedViewState, rTarget, true ),
        mpGraphicObject( rGraphicObject ),
        maRenderState(rUsedRenderState),
        maPoint( rPoint ),
        maSize( rSize ),
        maAttributes( rAttr )
    {
    }

    void SAL_CALL CachedBitmap::disposing()
    {
        ::osl::MutexGuard aGuard( m_aMutex );

        mpGraphicObject.reset();

        CachedPrimitiveBase::disposing();
    }

    ::sal_Int8 CachedBitmap::doRedraw( const rendering::ViewState&					rNewState,
                                       const rendering::ViewState&					rOldState,
                                       const uno::Reference< rendering::XCanvas >& 	rTargetCanvas,
                                       bool											bSameViewTransform )
    {
        ENSURE_OR_THROW( bSameViewTransform,
                         "CachedBitmap::doRedraw(): base called with changed view transform "
                         "(told otherwise during construction)" );

        // TODO(P1): Could adapt to modified clips as well
        if( rNewState.Clip != rOldState.Clip )
            return rendering::RepaintResult::FAILED;

        RepaintTarget* pTarget = dynamic_cast< RepaintTarget* >(rTargetCanvas.get());

        ENSURE_OR_THROW( pTarget,
                          "CachedBitmap::redraw(): cannot cast target to RepaintTarget" );

        if( !pTarget->repaint( mpGraphicObject,
                               rNewState,
                               maRenderState,
                               maPoint,
                               maSize,
                               maAttributes ) )
        {
            // target failed to repaint
            return rendering::RepaintResult::FAILED;
        }

        return rendering::RepaintResult::REDRAWN;
    }
}