slideshow/source/engine/wakeupevent.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 <sal/config.h>
  21
  22 #include <algorithm>
  23
  24 #include <wakeupevent.hxx>
  25
  26
  27 namespace slideshow::internal
  28 {
  29         WakeupEvent::WakeupEvent(
  30             std::shared_ptr<canvas::tools::ElapsedTime> const & pTimeBase,
  31             ActivitiesQueue& rActivityQueue ) :
  32             Event(u"WakeupEvent"_ustr),
  33             maTimer(pTimeBase),
  34             mnNextTime(0.0),
  35             mpActivity(),
  36             mrActivityQueue( rActivityQueue )
  37         {
  38         }
  39
  40         void WakeupEvent::dispose()
  41         {
  42             mpActivity.reset();
  43         }
  44
  45         bool WakeupEvent::fire()
  46         {
  47             if( !mpActivity )
  48                 return false;
  49
  50             return mrActivityQueue.addActivity( mpActivity );
  51         }
  52
  53         bool WakeupEvent::isCharged() const
  54         {
  55             // this event won't expire, we fire every time we're
  56             // re-inserted into the event queue.
  57             return true;
  58         }
  59
  60         double WakeupEvent::getActivationTime( double nCurrentTime ) const
  61         {
  62             const double nElapsedTime( maTimer.getElapsedTime() );
  63
  64             return ::std::max( nCurrentTime,
  65                                nCurrentTime - nElapsedTime + mnNextTime );
  66         }
  67
  68         void WakeupEvent::start()
  69         {
  70             // start timer
  71             maTimer.reset();
  72         }
  73
  74         void WakeupEvent::setNextTimeout( double rNextTime )
  75         {
  76             mnNextTime = rNextTime;
  77         }
  78
  79         void WakeupEvent::setActivity( const ActivitySharedPtr& rActivity )
  80         {
  81             mpActivity = rActivity;
  82         }
  83 }
  84
  85 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */