libreoffice/canvas/inc/canvas/rendering/isurfaceproxy.hxx

/*************************************************************************
 *
 *  OpenOffice.org - a multi-platform office productivity suite
 *
 *  $RCSfile: isurfaceproxy.hxx,v $
 *
 *  $Revision: 1.2 $
 *
 *  last change: $Author: kz $ $Date: 2005-11-02 12:45:44 $
 *
 *  The Contents of this file are made available subject to
 *  the terms of GNU Lesser General Public License Version 2.1.
 *
 *
 *    GNU Lesser General Public License Version 2.1
 *    =============================================
 *    Copyright 2005 by Sun Microsystems, Inc.
 *    901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License version 2.1, as published by the Free Software Foundation.
 *
 *    This library is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *    Lesser General Public License for more details.
 *
 *    You should have received a copy of the GNU Lesser General Public
 *    License along with this library; if not, write to the Free Software
 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *    MA  02111-1307  USA
 *
 ************************************************************************/

#ifndef INCLUDED_CANVAS_ISURFACEPROXY_HXX
#define INCLUDED_CANVAS_ISURFACEPROXY_HXX

#ifndef INCLUDED_CANVAS_IRENDERMODULE_HXX
#include <canvas/rendering/irendermodule.hxx>
#endif

#include <boost/shared_ptr.hpp>

namespace basegfx
{
    class B2DRange;
    class B2DPoint;
    class B2DPolyPolygon;
    class B2DHomMatrix;
}

namespace canvas
{
    struct ISurfaceProxy
    {
        virtual ~ISurfaceProxy() {}

        /** Notify the proxy that the color buffer has changed
         */
        virtual void setColorBufferDirty() = 0;

        /** Render the surface content to screen.

            @param fAlpha
            Overall alpha for content

            @param rPos
            Output position

            @param rTransform
            Output transformation (does not affect output position)
         */
        virtual bool draw( double                         fAlpha,
                           const ::basegfx::B2DPoint&     rPos,
                           const ::basegfx::B2DHomMatrix& rTransform ) = 0;

        /** Render the surface content to screen.

            @param fAlpha
            Overall alpha for content

            @param rPos
            Output position

            @param rArea
            Subset of the surface to render. Coordinate system are
            surface area pixel, given area will be clipped to the
            surface bounds.

            @param rTransform
            Output transformation (does not affect output position)
         */
        virtual bool draw( double                         fAlpha,
                           const ::basegfx::B2DPoint&     rPos,
                           const ::basegfx::B2DRange&     rArea,
                           const ::basegfx::B2DHomMatrix& rTransform ) = 0;

        /** Render the surface content to screen.

            @param fAlpha
            Overall alpha for content

            @param rPos
            Output position

            @param rClipPoly
            Clip polygon for the surface. The clip polygon is also
            subject to the output transformation.

            @param rTransform
            Output transformation (does not affect output position)
         */
        virtual bool draw( double                           fAlpha,
                           const ::basegfx::B2DPoint&       rPos,
                           const ::basegfx::B2DPolyPolygon& rClipPoly,
                           const ::basegfx::B2DHomMatrix&   rTransform ) = 0;
    };

    typedef ::boost::shared_ptr< ISurfaceProxy > ISurfaceProxySharedPtr;
}

#endif /* INCLUDED_CANVAS_ISURFACEPROXY_HXX */