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