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
  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 <svx/svxids.hrc>
  28 #include <vcl/svapp.hxx>
  29 #include <boost/bind.hpp>
  30
  31 using namespace ::com::sun::star::uno;
  32 using namespace ::com::sun::star::lang;
  33 using ::sd::framework::FrameworkHelper;
  34
  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 (void)
  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             mpSlideShow->end();
  87
  88             // The following piece of code should not be here because the
  89             // slide show should be aware of the existence of the presenter
  90             // console (which is displayed in the FullScreenPane).  But the
  91             // timing has to be right and I did not find a better place for
  92             // it.
  93
  94             // Wait for the full screen pane, which displays the presenter
  95             // console, to disappear.  Only when it is gone, call
  96             // InitiatePresenterStart(), in order to begin the asynchronous
  97             // restart of the slide show.
  98             if (mpViewShellBase != NULL)
  99             {
 100                 ::boost::shared_ptr<FrameworkHelper> pHelper(
 101                     FrameworkHelper::Instance(*mpViewShellBase));
 102                 if (pHelper->GetConfigurationController()->getResource(
 103                     pHelper->CreateResourceId(FrameworkHelper::msFullScreenPaneURL)).is())
 104                 {
 105                     ::sd::framework::ConfigurationController::Lock aLock (
 106                         pHelper->GetConfigurationController());
 107
 108                     pHelper->RunOnConfigurationEvent(
 109                         FrameworkHelper::msConfigurationUpdateEndEvent,
 110                         ::boost::bind(&SlideShowRestarter::StartPresentation, shared_from_this()));
 111                     pHelper->UpdateConfiguration();
 112                 }
 113                 else
 114                 {
 115                     StartPresentation();
 116                 }
 117             }
 118         }
 119     }
 120     return 0;
 121 }
 122
 123 void SlideShowRestarter::StartPresentation (void)
 124 {
 125     if (mpDispatcher == NULL && mpViewShellBase!=NULL)
 126         mpDispatcher = mpViewShellBase->GetViewFrame()->GetDispatcher();
 127
 128     // Start the slide show on the saved current slide.
 129     if (mpDispatcher != NULL)
 130     {
 131         mpDispatcher->Execute(SID_PRESENTATION, SFX_CALLMODE_ASYNCHRON);
 132         if (mpSlideShow.is())
 133         {
 134             Sequence<css::beans::PropertyValue> aProperties (1);
 135             aProperties[0].Name = "FirstPage";
 136             aProperties[0].Value <<= "page" + OUString::valueOf(mnCurrentSlideNumber+1);
 137             mpSlideShow->startWithArguments(aProperties);
 138         }
 139         mpSelf.reset();
 140     }
 141 }
 142
 143 } // end of namespace sd
 144
 145 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */