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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* 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 .
*/
#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
opportunity 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.
@param bForce
Used to force a re-start, even if the display count is unchanged.
*/
void Restart (bool bForce);
private:
ImplSVEvent * 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
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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