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
  21 // must be first
  22 #include <canvas/debug.hxx>
  23 #include <canvas/verbosetrace.hxx>
  24
  25 #include <wakeupevent.hxx>
  26
  27
  28 namespace slideshow
  29 {
  30     namespace internal
  31     {
  32         WakeupEvent::WakeupEvent(
  33             boost::shared_ptr<canvas::tools::ElapsedTime> const & pTimeBase,
  34             ActivitiesQueue& rActivityQueue ) :
  35             Event("WakeupEvent"),
  36             maTimer(pTimeBase),
  37             mnNextTime(0.0),
  38             mpActivity(),
  39             mrActivityQueue( rActivityQueue )
  40         {
  41         }
  42
  43         void WakeupEvent::dispose()
  44         {
  45             mpActivity.reset();
  46         }
  47
  48         bool WakeupEvent::fire()
  49         {
  50             if( !mpActivity )
  51                 return false;
  52
  53             return mrActivityQueue.addActivity( mpActivity );
  54         }
  55
  56         bool WakeupEvent::isCharged() const
  57         {
  58             // this event won't expire, we fire every time we're
  59             // re-inserted into the event queue.
  60             return true;
  61         }
  62
  63         double WakeupEvent::getActivationTime( double nCurrentTime ) const
  64         {
  65             const double nElapsedTime( maTimer.getElapsedTime() );
  66
  67             return ::std::max( nCurrentTime,
  68                                nCurrentTime - nElapsedTime + mnNextTime );
  69         }
  70
  71         void WakeupEvent::start()
  72         {
  73             // start timer
  74             maTimer.reset();
  75         }
  76
  77         void WakeupEvent::setNextTimeout( double rNextTime )
  78         {
  79             mnNextTime = rNextTime;
  80         }
  81
  82         void WakeupEvent::setActivity( const ActivitySharedPtr& rActivity )
  83         {
  84             mpActivity = rActivity;
  85         }
  86     }
  87 }
  88
  89 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */