87 lines
2.8 KiB
C++
87 lines
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#pragma once
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#include <rtl/ref.hxx>
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#include <tools/link.hxx>
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#include <memory>
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namespace sd
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{
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class SlideShow;
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}
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namespace sd
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{
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class ViewShellBase;
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}
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class SfxDispatcher;
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struct ImplSVEvent;
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namespace sd
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{
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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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opportunity to show or hide depending on the number of available displays.
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*/
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class SlideShowRestarter : public std::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(::rtl::Reference<SlideShow> pSlideShow, ViewShellBase* pViewShellBase);
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virtual ~SlideShowRestarter();
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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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@param bForce
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Used to force a re-start, even if the display count is unchanged.
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*/
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void Restart(bool bForce);
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private:
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ImplSVEvent* mnEventId;
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::rtl::Reference<SlideShow> mpSlideShow;
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ViewShellBase* mpViewShellBase;
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::std::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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DECL_LINK(EndPresentation, void*, 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();
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};
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} // end of namespace sd
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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