sd/source/ui/slideshow/SlideShowRestarter.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <DrawController.hxx>
  21 #include <ViewShellBase.hxx>
  22 #include <slideshow.hxx>
  23 #include "SlideShowRestarter.hxx"
  24 #include <framework/ConfigurationController.hxx>
  25 #include <framework/FrameworkHelper.hxx>
  26 #include <sfx2/dispatch.hxx>
  27 #include <sfx2/viewfrm.hxx>
  28 #include <sfx2/app.hxx>
  29 #include <svx/svxids.hrc>
  30 #include <vcl/svapp.hxx>
  31
  32 #include <functional>
  33
  34 using namespace ::com::sun::star::uno;
  35 using namespace ::com::sun::star::lang;
  36 using ::sd::framework::FrameworkHelper;
  37
  38 namespace sd {
  39
  40 SlideShowRestarter::SlideShowRestarter (
  41     const ::rtl::Reference<SlideShow>& rpSlideShow,
  42     ViewShellBase* pViewShellBase)
  43     : mnEventId(nullptr),
  44       mpSlideShow(rpSlideShow),
  45       mpViewShellBase(pViewShellBase),
  46       mnDisplayCount(Application::GetScreenCount()),
  47       mpDispatcher(pViewShellBase->GetViewFrame()->GetDispatcher()),
  48       mnCurrentSlideNumber(0)
  49 {
  50 }
  51
  52 SlideShowRestarter::~SlideShowRestarter()
  53 {
  54 }
  55
  56 void SlideShowRestarter::Restart (bool bForce)
  57 {
  58     // Prevent multiple and concurrently restarts.
  59     if (mnEventId != nullptr)
  60         return;
  61
  62     if (bForce)
  63         mnDisplayCount = 0;
  64
  65     // Remember the current slide in order to restore it after the slide
  66     // show has been restarted.
  67     if (mpSlideShow.is())
  68         mnCurrentSlideNumber = mpSlideShow->getCurrentPageNumber();
  69
  70     // Remember a shared pointer to this object to prevent its destruction
  71     // before the whole restarting process has finished.
  72     mpSelf = shared_from_this();
  73
  74     // We do not know in what situation this method was called.  So, in
  75     // order to be able to cleanly stop the presentation, we do that
  76     // asynchronously.
  77     mnEventId = Application::PostUserEvent(
  78         LINK(this, SlideShowRestarter, EndPresentation));
  79 }
  80
  81 IMPL_LINK_NOARG(SlideShowRestarter, EndPresentation, void*, void)
  82 {
  83     mnEventId = nullptr;
  84     if (!mpSlideShow.is())
  85         return;
  86
  87     if (mnDisplayCount == static_cast<sal_Int32>(Application::GetScreenCount()))
  88         return;
  89
  90     bool bIsExitAfterPresenting = mpSlideShow->IsExitAfterPresenting();
  91     mpSlideShow->SetExitAfterPresenting(false);
  92     mpSlideShow->end();
  93     mpSlideShow->SetExitAfterPresenting(bIsExitAfterPresenting);
  94
  95     // The following piece of code should not be here because the
  96     // slide show should be aware of the existence of the presenter
  97     // console (which is displayed in the FullScreenPane).  But the
  98     // timing has to be right and I did not find a better place for
  99     // it.
 100
 101     // Wait for the full screen pane, which displays the presenter
 102     // console, to disappear.  Only when it is gone, call
 103     // InitiatePresenterStart(), in order to begin the asynchronous
 104     // restart of the slide show.
 105     if (mpViewShellBase == nullptr)
 106         return;
 107
 108     ::std::shared_ptr<FrameworkHelper> pHelper(
 109         FrameworkHelper::Instance(*mpViewShellBase));
 110     if (pHelper->GetConfigurationController()->getResource(
 111         FrameworkHelper::CreateResourceId(FrameworkHelper::msFullScreenPaneURL)).is())
 112     {
 113         ::sd::framework::ConfigurationController::Lock aLock (
 114             pHelper->GetConfigurationController());
 115
 116         pHelper->RunOnConfigurationEvent(
 117             FrameworkHelper::msConfigurationUpdateEndEvent,
 118             ::std::bind(&SlideShowRestarter::StartPresentation, shared_from_this()));
 119         pHelper->UpdateConfiguration();
 120     }
 121     else
 122     {
 123         StartPresentation();
 124     }
 125 }
 126
 127 void SlideShowRestarter::StartPresentation()
 128 {
 129     //rhbz#1091117 crash because we're exiting the application, and this is
 130     //being called during the configuration update event on exit. At this point
 131     //newly created objects won't get disposed called on them, because the
 132     //disposer is doing its last execution of that now.
 133     if (mpViewShellBase && mpViewShellBase->GetDrawController().IsDisposing())
 134         return;
 135
 136     if (mpDispatcher == nullptr && mpViewShellBase!=nullptr)
 137         mpDispatcher = mpViewShellBase->GetViewFrame()->GetDispatcher();
 138
 139     // Start the slide show on the saved current slide.
 140     if (mpDispatcher != nullptr)
 141     {
 142         mpDispatcher->Execute(SID_PRESENTATION, SfxCallMode::ASYNCHRON);
 143         if (mpSlideShow.is())
 144         {
 145             Sequence<css::beans::PropertyValue> aProperties (1);
 146             aProperties[0].Name = "FirstPage";
 147             aProperties[0].Value <<= "page" + OUString::number(mnCurrentSlideNumber+1);
 148             mpSlideShow->startWithArguments(aProperties);
 149         }
 150         mpSelf.reset();
 151     }
 152 }
 153
 154 } // end of namespace sd
 155
 156 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */