slideshow/source/engine/animationnodes/sequentialtimecontainer.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 <canvas/debug.hxx>
  22 #include <canvas/verbosetrace.hxx>
  23
  24 #include "delayevent.hxx"
  25 #include "eventqueue.hxx"
  26 #include "usereventqueue.hxx"
  27 #include "sequentialtimecontainer.hxx"
  28 #include "tools.hxx"
  29
  30 #include <boost/bind.hpp>
  31 #include <algorithm>
  32
  33 namespace slideshow {
  34 namespace internal {
  35
  36 void SequentialTimeContainer::activate_st()
  37 {
  38     // resolve first possible child, ignore
  39     for ( ; mnFinishedChildren < maChildren.size(); ++mnFinishedChildren ) {
  40         if (resolveChild( maChildren[mnFinishedChildren] ))
  41             break;
  42         else {
  43             // node still UNRESOLVED, no need to deactivate or end...
  44             OSL_FAIL( "### resolving child failed!" );
  45         }
  46     }
  47
  48     if (isDurationIndefinite() &&
  49         (maChildren.empty() || mnFinishedChildren >= maChildren.size()))
  50     {
  51         // deactivate ASAP:
  52         scheduleDeactivationEvent(
  53             makeEvent(
  54                  boost::bind< void >( boost::mem_fn( &AnimationNode::deactivate ), getSelf() ),
  55                  "SequentialTimeContainer::deactivate") );
  56     }
  57     else // use default
  58         scheduleDeactivationEvent();
  59 }
  60
  61 void SequentialTimeContainer::dispose()
  62 {
  63     BaseContainerNode::dispose();
  64     if (mpCurrentSkipEvent) {
  65         mpCurrentSkipEvent->dispose();
  66         mpCurrentSkipEvent.reset();
  67     }
  68     if (mpCurrentRewindEvent) {
  69         mpCurrentRewindEvent->dispose();
  70         mpCurrentRewindEvent.reset();
  71     }
  72 }
  73
  74 void SequentialTimeContainer::skipEffect(
  75     AnimationNodeSharedPtr const& pChildNode )
  76 {
  77     if (isChildNode(pChildNode)) {
  78         // empty all events ignoring timings => until next effect
  79         getContext().mrEventQueue.forceEmpty();
  80         getContext().mrEventQueue.addEvent(
  81             makeEvent(
  82                 boost::bind<void>( boost::mem_fn( &AnimationNode::deactivate ), pChildNode ),
  83                 "SequentialTimeContainer::deactivate, skipEffect with delay") );
  84     }
  85     else
  86         OSL_FAIL( "unknown notifier!" );
  87 }
  88
  89 bool SequentialTimeContainer::resolveChild(
  90     AnimationNodeSharedPtr const& pChildNode )
  91 {
  92     bool const bResolved = pChildNode->resolve();
  93     if (bResolved && isMainSequenceRootNode()) {
  94         // discharge events:
  95         if (mpCurrentSkipEvent)
  96             mpCurrentSkipEvent->dispose();
  97         if (mpCurrentRewindEvent)
  98             mpCurrentRewindEvent->dispose();
  99
 100         // event that will deactivate the resolved/running child:
 101         mpCurrentSkipEvent = makeEvent(
 102             boost::bind( &SequentialTimeContainer::skipEffect,
 103                          boost::dynamic_pointer_cast<SequentialTimeContainer>( getSelf() ),
 104                          pChildNode ),
 105             "SequentialTimeContainer::skipEffect, resolveChild");
 106
 107         // deactivate child node when skip event occurs:
 108         getContext().mrUserEventQueue.registerSkipEffectEvent(
 109             mpCurrentSkipEvent,
 110             mnFinishedChildren+1<maChildren.size());
 111     }
 112     return bResolved;
 113 }
 114
 115 void SequentialTimeContainer::notifyDeactivating(
 116     AnimationNodeSharedPtr const& rNotifier )
 117 {
 118     if (notifyDeactivatedChild( rNotifier ))
 119         return;
 120
 121     OSL_ASSERT( mnFinishedChildren < maChildren.size() );
 122     AnimationNodeSharedPtr const& pNextChild = maChildren[mnFinishedChildren];
 123     OSL_ASSERT( pNextChild->getState() == UNRESOLVED );
 124
 125     if (! resolveChild( pNextChild )) {
 126         // could not resolve child - since we risk to
 127         // stall the chain of events here, play it safe
 128         // and deactivate this node (only if we have
 129         // indefinite duration - otherwise, we'll get a
 130         // deactivation event, anyways).
 131         deactivate();
 132     }
 133 }
 134
 135 } // namespace internal
 136 } // namespace slideshow
 137
 138 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */