slideshow/source/engine/animationnodes/sequentialtimecontainer.cxx

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  30
  31 // MARKER(update_precomp.py): autogen include statement, do not remove
  32 #include "precompiled_slideshow.hxx"
  33
  34 #include <canvas/debug.hxx>
  35 #include <canvas/verbosetrace.hxx>
  36
  37 #include "delayevent.hxx"
  38 #include "eventqueue.hxx"
  39 #include "usereventqueue.hxx"
  40 #include "sequentialtimecontainer.hxx"
  41 #include "tools.hxx"
  42
  43 #include <boost/bind.hpp>
  44 #include <algorithm>
  45
  46 namespace slideshow {
  47 namespace internal {
  48
  49 void SequentialTimeContainer::activate_st()
  50 {
  51     // resolve first possible child, ignore
  52     for ( ; mnFinishedChildren < maChildren.size(); ++mnFinishedChildren ) {
  53         if (resolveChild( maChildren[mnFinishedChildren] ))
  54             break;
  55         else {
  56             // node still UNRESOLVED, no need to deactivate or end...
  57             OSL_ENSURE( false, "### resolving child failed!" );
  58         }
  59     }
  60
  61     if (isDurationIndefinite() &&
  62         (maChildren.empty() || mnFinishedChildren >= maChildren.size()))
  63     {
  64         // deactivate ASAP:
  65         scheduleDeactivationEvent(
  66             makeEvent( boost::bind< void >( boost::mem_fn( &AnimationNode::deactivate ), getSelf() ) ) );
  67     }
  68     else // use default
  69         scheduleDeactivationEvent();
  70 }
  71
  72 void SequentialTimeContainer::dispose()
  73 {
  74     BaseContainerNode::dispose();
  75     if (mpCurrentSkipEvent) {
  76         mpCurrentSkipEvent->dispose();
  77         mpCurrentSkipEvent.reset();
  78     }
  79     if (mpCurrentRewindEvent) {
  80         mpCurrentRewindEvent->dispose();
  81         mpCurrentRewindEvent.reset();
  82     }
  83 }
  84
  85 void SequentialTimeContainer::skipEffect(
  86     AnimationNodeSharedPtr const& pChildNode )
  87 {
  88     if (isChildNode(pChildNode)) {
  89         // empty all events ignoring timings => until next effect
  90         getContext().mrEventQueue.forceEmpty();
  91         getContext().mrEventQueue.addEvent(
  92             makeEvent( boost::bind<void>( boost::mem_fn( &AnimationNode::deactivate ), pChildNode ) ) );
  93     }
  94     else
  95         OSL_ENSURE( false, "unknown notifier!" );
  96 }
  97
  98 void SequentialTimeContainer::rewindEffect(
  99     AnimationNodeSharedPtr const& /*pChildNode*/ )
 100 {
 101     // xxx todo: ...
 102 }
 103
 104 bool SequentialTimeContainer::resolveChild(
 105     AnimationNodeSharedPtr const& pChildNode )
 106 {
 107     bool const bResolved = pChildNode->resolve();
 108     if (bResolved && isMainSequenceRootNode()) {
 109         // discharge events:
 110         if (mpCurrentSkipEvent)
 111             mpCurrentSkipEvent->dispose();
 112         if (mpCurrentRewindEvent)
 113             mpCurrentRewindEvent->dispose();
 114
 115         // event that will deactivate the resolved/running child:
 116         mpCurrentSkipEvent = makeEvent(
 117             boost::bind( &SequentialTimeContainer::skipEffect,
 118                          boost::dynamic_pointer_cast<SequentialTimeContainer>( getSelf() ),
 119                          pChildNode ) );
 120         // event that will reresolve the resolved/activated child:
 121         mpCurrentRewindEvent = makeEvent(
 122             boost::bind( &SequentialTimeContainer::rewindEffect,
 123                          boost::dynamic_pointer_cast<SequentialTimeContainer>( getSelf() ),
 124                          pChildNode ) );
 125
 126         // deactivate child node when skip event occurs:
 127         getContext().mrUserEventQueue.registerSkipEffectEvent(
 128             mpCurrentSkipEvent,
 129             mnFinishedChildren+1<maChildren.size());
 130         // rewind to previous child:
 131         getContext().mrUserEventQueue.registerRewindEffectEvent(
 132             mpCurrentRewindEvent );
 133     }
 134     return bResolved;
 135 }
 136
 137 void SequentialTimeContainer::notifyDeactivating(
 138     AnimationNodeSharedPtr const& rNotifier )
 139 {
 140     OSL_TRACE("    SequentialTimeContainer::notifyDeactivating\r");
 141     if (notifyDeactivatedChild( rNotifier ))
 142         return;
 143
 144     OSL_ASSERT( mnFinishedChildren < maChildren.size() );
 145     AnimationNodeSharedPtr const& pNextChild = maChildren[mnFinishedChildren];
 146     OSL_ASSERT( pNextChild->getState() == UNRESOLVED );
 147
 148     if (! resolveChild( pNextChild )) {
 149         // could not resolve child - since we risk to
 150         // stall the chain of events here, play it safe
 151         // and deactivate this node (only if we have
 152         // indefinite duration - otherwise, we'll get a
 153         // deactivation event, anyways).
 154         deactivate();
 155     }
 156 }
 157
 158 } // namespace internal
 159 } // namespace slideshow
 160