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 "SlideShowRestarter.hxx"
  22 #include "framework/ConfigurationController.hxx"
  23 #include "framework/FrameworkHelper.hxx"
  24 #include <comphelper/processfactory.hxx>
  25 #include <sfx2/dispatch.hxx>
  26 #include <sfx2/viewfrm.hxx>
  27 #include <sfx2/app.hxx>
  28 #include <svx/svxids.hrc>
  29 #include <vcl/svapp.hxx>
  30 #include <boost/bind.hpp>
  31
  32 using namespace ::com::sun::star::uno;
  33 using namespace ::com::sun::star::lang;
  34 using ::sd::framework::FrameworkHelper;
  35
  36 namespace sd {
  37
  38 SlideShowRestarter::SlideShowRestarter (
  39     const ::rtl::Reference<SlideShow>& rpSlideShow,
  40     ViewShellBase* pViewShellBase)
  41     : mnEventId(0),
  42       mpSlideShow(rpSlideShow),
  43       mpViewShellBase(pViewShellBase),
  44       mnDisplayCount(Application::GetScreenCount()),
  45       mpDispatcher(pViewShellBase->GetViewFrame()->GetDispatcher()),
  46       mnCurrentSlideNumber(0)
  47 {
  48 }
  49
  50 SlideShowRestarter::~SlideShowRestarter()
  51 {
  52 }
  53
  54 void SlideShowRestarter::Restart (bool bForce)
  55 {
  56     // Prevent multiple and concurrently restarts.
  57     if (mnEventId != 0)
  58         return;
  59
  60     if (bForce)
  61         mnDisplayCount = 0;
  62
  63     // Remember the current slide in order to restore it after the slide
  64     // show has been restarted.
  65     if (mpSlideShow.is())
  66         mnCurrentSlideNumber = mpSlideShow->getCurrentPageNumber();
  67
  68     // Remember a shared pointer to this object to prevent its destruction
  69     // before the whole restarting process has finished.
  70     mpSelf = shared_from_this();
  71
  72     // We do not know in what situation this method was called.  So, in
  73     // order to be able to cleanly stop the presentation, we do that
  74     // asynchronously.
  75     mnEventId = Application::PostUserEvent(
  76         LINK(this, SlideShowRestarter, EndPresentation));
  77 }
  78
  79 IMPL_LINK_NOARG(SlideShowRestarter, EndPresentation)
  80 {
  81     mnEventId = 0;
  82     if (mpSlideShow.is())
  83     {
  84         if (mnDisplayCount != (sal_Int32)Application::GetScreenCount())
  85         {
  86             bool bIsExitAfterPresenting = mpSlideShow->IsExitAfterPresenting();
  87             mpSlideShow->SetExitAfterPresenting(false);
  88             mpSlideShow->end();
  89             mpSlideShow->SetExitAfterPresenting(bIsExitAfterPresenting);
  90
  91             // The following piece of code should not be here because the
  92             // slide show should be aware of the existence of the presenter
  93             // console (which is displayed in the FullScreenPane).  But the
  94             // timing has to be right and I did not find a better place for
  95             // it.
  96
  97             // Wait for the full screen pane, which displays the presenter
  98             // console, to disappear.  Only when it is gone, call
  99             // InitiatePresenterStart(), in order to begin the asynchronous
 100             // restart of the slide show.
 101             if (mpViewShellBase != NULL)
 102             {
 103                 ::boost::shared_ptr<FrameworkHelper> pHelper(
 104                     FrameworkHelper::Instance(*mpViewShellBase));
 105                 if (pHelper->GetConfigurationController()->getResource(
 106                     FrameworkHelper::CreateResourceId(FrameworkHelper::msFullScreenPaneURL)).is())
 107                 {
 108                     ::sd::framework::ConfigurationController::Lock aLock (
 109                         pHelper->GetConfigurationController());
 110
 111                     pHelper->RunOnConfigurationEvent(
 112                         FrameworkHelper::msConfigurationUpdateEndEvent,
 113                         ::boost::bind(&SlideShowRestarter::StartPresentation, shared_from_this()));
 114                     pHelper->UpdateConfiguration();
 115                 }
 116                 else
 117                 {
 118                     StartPresentation();
 119                 }
 120             }
 121         }
 122     }
 123     return 0;
 124 }
 125
 126 void SlideShowRestarter::StartPresentation()
 127 {
 128     //rhbz#1091117 crash because we're exiting the application, and this is
 129     //being called during the configuration update event on exit. At this point
 130     //newly created objects won't get disposed called on them, because the
 131     //disposer is doing its last execution of that now.
 132     if (mpViewShellBase && mpViewShellBase->GetDrawController().IsDisposing())
 133         return;
 134
 135     if (mpDispatcher == NULL && mpViewShellBase!=NULL)
 136         mpDispatcher = mpViewShellBase->GetViewFrame()->GetDispatcher();
 137
 138     // Start the slide show on the saved current slide.
 139     if (mpDispatcher != NULL)
 140     {
 141         mpDispatcher->Execute(SID_PRESENTATION, SfxCallMode::ASYNCHRON);
 142         if (mpSlideShow.is())
 143         {
 144             Sequence<css::beans::PropertyValue> aProperties (1);
 145             aProperties[0].Name = "FirstPage";
 146             aProperties[0].Value <<= "page" + OUString::number(mnCurrentSlideNumber+1);
 147             mpSlideShow->startWithArguments(aProperties);
 148         }
 149         mpSelf.reset();
 150     }
 151 }
 152
 153 } // end of namespace sd
 154
 155 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */