91 lines
3.1 KiB
C++
91 lines
3.1 KiB
C++
/*************************************************************************
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* Copyright 2000, 2010 Oracle and/or its affiliates.
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* This file is part of OpenOffice.org.
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*
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* OpenOffice.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 3
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* only, as published by the Free Software Foundation.
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*
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* OpenOffice.org is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License version 3 for more details
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* (a copy is included in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with OpenOffice.org. If not, see
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* <http://www.openoffice.org/license.html>
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* for a copy of the LGPLv3 License.
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*
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************************************************************************/
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#include "precompiled_sd.hxx"
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#include "slideshow.hxx"
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#include "ViewShellBase.hxx"
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#include <rtl/ref.hxx>
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#include <tools/link.hxx>
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#include <boost/enable_shared_from_this.hpp>
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namespace sd {
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/** This class is used when a display is removed or added to restart the
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slide show. This is necessary at least with DirectX because
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deactivating a display invalidates DirectX resources. Accessing those
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leads to a crash.
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During a restart a possibly installed presenter extension is given the
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oportunity to show or hide depending on the number of available displays.
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*/
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class SlideShowRestarter
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: public boost::enable_shared_from_this<SlideShowRestarter>
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{
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public:
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/** Create a new SlideShowRestarter object.
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@param rpSlideShow
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The slide show is used to determine the current slide, which is
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restored after the restart, and of course to stop and start the
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slide show.
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@param pViewShellBase
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Used to get access to a slot dispatcher.
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*/
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SlideShowRestarter (
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const ::rtl::Reference<SlideShow>& rpSlideShow,
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ViewShellBase* pViewShellBase);
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virtual ~SlideShowRestarter (void);
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/** Restarting the slide show is an asynchronous multi step process
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which is started by calling this method.
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*/
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void Restart (void);
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private:
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sal_Int32 mnEventId;
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::rtl::Reference<SlideShow> mpSlideShow;
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ViewShellBase* mpViewShellBase;
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::boost::shared_ptr<SlideShowRestarter> mpSelf;
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sal_Int32 mnDisplayCount;
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SfxDispatcher* mpDispatcher;
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sal_Int32 mnCurrentSlideNumber;
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/** The display count is used to determine whether the number of
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displays has changed and thus whether restarting the slide show is
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really necessary.
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*/
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sal_Int32 GetDisplayCount (void);
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DECL_LINK(EndPresentation, void*);
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/** Restart the presentation on the slide last shown before the restart
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was initiated.
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*/
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void StartPresentation (void);
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};
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} // end of namespace sd
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