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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#include "precompiled_sd.hxx"
#include "slideshow.hxx"
#include "ViewShellBase.hxx"
#include <rtl/ref.hxx>
#include <tools/link.hxx>
#include <boost/enable_shared_from_this.hpp>
namespace sd {
/** This class is used when a display is removed or added to restart the
slide show. This is necessary at least with DirectX because
deactivating a display invalidates DirectX resources. Accessing those
leads to a crash.
During a restart a possibly installed presenter extension is given the
oportunity to show or hide depending on the number of available displays.
*/
class SlideShowRestarter
: public boost::enable_shared_from_this<SlideShowRestarter>
{
public:
/** Create a new SlideShowRestarter object.
@param rpSlideShow
The slide show is used to determine the current slide, which is
restored after the restart, and of course to stop and start the
slide show.
@param pViewShellBase
Used to get access to a slot dispatcher.
*/
SlideShowRestarter (
const ::rtl::Reference<SlideShow>& rpSlideShow,
ViewShellBase* pViewShellBase);
virtual ~SlideShowRestarter (void);
/** Restarting the slide show is an asynchronous multi step process
which is started by calling this method.
*/
void Restart (void);
private:
sal_Int32 mnEventId;
::rtl::Reference<SlideShow> mpSlideShow;
ViewShellBase* mpViewShellBase;
::boost::shared_ptr<SlideShowRestarter> mpSelf;
sal_Int32 mnDisplayCount;
SfxDispatcher* mpDispatcher;
sal_Int32 mnCurrentSlideNumber;
/** The display count is used to determine whether the number of
displays has changed and thus whether restarting the slide show is
really necessary.
*/
sal_Int32 GetDisplayCount (void);
DECL_LINK(EndPresentation, void*);
/** Restart the presentation on the slide last shown before the restart
was initiated.
*/
void StartPresentation (void);
};
} // end of namespace sd
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