xref: /trunk/main/slideshow/source/engine/shapes/viewbackgroundshape.hxx (revision aaef562f)

/**************************************************************
 *
 * 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
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 *************************************************************/



#ifndef INCLUDED_SLIDESHOW_VIEWBACKGROUNDSHAPE_HXX
#define INCLUDED_SLIDESHOW_VIEWBACKGROUNDSHAPE_HXX

#include <com/sun/star/uno/Reference.hxx>
#include <com/sun/star/rendering/XBitmap.hpp>

#include <basegfx/range/b2drectangle.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <cppcanvas/spritecanvas.hxx>

#include <boost/shared_ptr.hpp>
#include <boost/utility.hpp>

#include "gdimtftools.hxx"
#include "viewlayer.hxx"


namespace slideshow
{
    namespace internal
    {
        /** This class is the viewable representation of a draw
            document's background, associated to a specific View

            The class is able to render the associated background on
            View implementations.
         */
        class ViewBackgroundShape : private boost::noncopyable
        {
        public:
            /** Create a ViewBackgroundShape for the given View

            	@param rView
                The associated View object.

                @param rShapeBounds
                Bounds of the background shape, in document coordinate
                system.
             */
            ViewBackgroundShape( const ViewLayerSharedPtr& 		rViewLayer,
                                 const ::basegfx::B2DRectangle&	rShapeBounds );

			/** Query the associated view layer of this shape
             */
            ViewLayerSharedPtr getViewLayer() const;

            bool render( const GDIMetaFileSharedPtr& rMtf ) const;

        private:
            /** Prefetch bitmap for given canvas
             */
            bool prefetch( const ::cppcanvas::CanvasSharedPtr&	rDestinationCanvas,
                           const GDIMetaFileSharedPtr&			rMtf ) const;

            /** The view layer this object is part of.
             */
            ViewLayerSharedPtr									mpViewLayer;

            /// Generated content bitmap, already with correct output size
            mutable ::com::sun::star::uno::Reference<
                ::com::sun::star::rendering::XBitmap >	mxBitmap;

            /// The last metafile a render object was generated for
            mutable GDIMetaFileSharedPtr						mpLastMtf;

            /// The canvas, mpRenderer is associated with
            mutable ::basegfx::B2DHomMatrix						maLastTransformation;

            const ::basegfx::B2DRectangle						maBounds;
        };

        typedef ::boost::shared_ptr< ViewBackgroundShape > ViewBackgroundShapeSharedPtr;

    }
}

#endif /* INCLUDED_SLIDESHOW_VIEWBACKGROUNDSHAPE_HXX */