1 files changed, 122 insertions, 0 deletions
diff --git a/slideshow/source/engine/animationnodes/sequentialtimecontainer.cxx b/slideshow/source/engine/animationnodes/sequentialtimecontainer.cxx
new file mode 100644
index 0000000000..3f928593c8
--- /dev/null
+++ b/slideshow/source/engine/animationnodes/sequentialtimecontainer.cxx
@@ -0,0 +1,122 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+
+#include <delayevent.hxx>
+#include <eventqueue.hxx>
+#include <usereventqueue.hxx>
+#include "sequentialtimecontainer.hxx"
+
+namespace slideshow::internal {
+
+void SequentialTimeContainer::activate_st()
+{
+    // resolve first possible child, ignore
+    for ( ; mnFinishedChildren < maChildren.size(); ++mnFinishedChildren ) {
+        if (resolveChild( maChildren[mnFinishedChildren] ))
+            break;
+        else {
+            // node still UNRESOLVED, no need to deactivate or end...
+            OSL_FAIL( "### resolving child failed!" );
+        }
+    }
+
+    if (isDurationIndefinite() &&
+        (maChildren.empty() || mnFinishedChildren >= maChildren.size()))
+    {
+        // deactivate ASAP:
+        auto self(getSelf());
+        scheduleDeactivationEvent(
+            makeEvent( [self] () { self->deactivate(); },
+                 "SequentialTimeContainer::deactivate") );
+    }
+    else // use default
+        scheduleDeactivationEvent();
+}
+
+void SequentialTimeContainer::dispose()
+{
+    BaseContainerNode::dispose();
+    if (mpCurrentSkipEvent) {
+        mpCurrentSkipEvent->dispose();
+        mpCurrentSkipEvent.reset();
+    }
+}
+
+void SequentialTimeContainer::skipEffect(
+    AnimationNodeSharedPtr const& pChildNode )
+{
+    if (isChildNode(pChildNode)) {
+        // empty all events ignoring timings => until next effect
+        getContext().mrEventQueue.forceEmpty();
+        getContext().mrEventQueue.addEvent(
+            makeEvent( [pChildNode] () { pChildNode->deactivate(); },
+                "SequentialTimeContainer::deactivate, skipEffect with delay") );
+    }
+    else
+        OSL_FAIL( "unknown notifier!" );
+}
+
+bool SequentialTimeContainer::resolveChild(
+    AnimationNodeSharedPtr const& pChildNode )
+{
+    bool const bResolved = pChildNode->resolve();
+    if (bResolved && isMainSequenceRootNode()) {
+        // discharge events:
+        if (mpCurrentSkipEvent)
+            mpCurrentSkipEvent->dispose();
+
+        // event that will deactivate the resolved/running child:
+        mpCurrentSkipEvent = makeEvent(
+            std::bind( &SequentialTimeContainer::skipEffect,
+                         std::dynamic_pointer_cast<SequentialTimeContainer>( getSelf() ),
+                         pChildNode ),
+            "SequentialTimeContainer::skipEffect, resolveChild");
+
+        // deactivate child node when skip event occurs:
+        getContext().mrUserEventQueue.registerSkipEffectEvent(
+            mpCurrentSkipEvent,
+            mnFinishedChildren+1<maChildren.size());
+    }
+    return bResolved;
+}
+
+void SequentialTimeContainer::notifyDeactivating(
+    AnimationNodeSharedPtr const& rNotifier )
+{
+    if (notifyDeactivatedChild( rNotifier ))
+        return;
+
+    OSL_ASSERT( mnFinishedChildren < maChildren.size() );
+    AnimationNodeSharedPtr const& pNextChild = maChildren[mnFinishedChildren];
+    OSL_ASSERT( pNextChild->getState() == UNRESOLVED );
+
+    if (! resolveChild( pNextChild )) {
+        // could not resolve child - since we risk to
+        // stall the chain of events here, play it safe
+        // and deactivate this node (only if we have
+        // indefinite duration - otherwise, we'll get a
+        // deactivation event, anyways).
+        deactivate();
+    }
+}
+
+} // namespace slideshow::internal
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */