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