curveview: ensured curveview is updated with the correct length and playhead

app/panel/param/param.cpp

@@ -94,9 +94,11 @@ void ParamPanel::CreateCurvePanel(NodeInput *input)
   panel->SetInput(input);
   panel->SetTimebase(view->timebase());
   panel->SetTimestamp(view->GetTimestamp());
+  panel->SetTimeTarget(view->GetTimeTarget());
 
   connect(view, &NodeParamView::TimebaseChanged, panel, &CurvePanel::SetTimebase);
   connect(view, &NodeParamView::TimeChanged, panel, &CurvePanel::SetTimestamp);
+  connect(view, &NodeParamView::TimeTargetChanged, panel, &CurvePanel::SetTimeTarget);
   connect(panel, &CurvePanel::TimeChanged, view, &NodeParamView::SetTimestamp);
   connect(panel, &CurvePanel::TimeChanged, view, &NodeParamView::TimeChanged);
   connect(panel, &CurvePanel::CloseRequested, this, &ParamPanel::ClosingCurvePanel);

app/widget/curvewidget/curvewidget.cpp

@@ -200,6 +200,8 @@ void CurveWidget::ScaleChangedEvent(const double &scale)
 
 void CurveWidget::TimeTargetChangedEvent(Node *target)
 {
+  ConnectViewerNode(nullptr);
+
   key_control_->SetTimeTarget(target);
 
   view_->SetTimeTarget(target);
@@ -207,6 +209,12 @@ void CurveWidget::TimeTargetChangedEvent(Node *target)
   if (bridge_) {
     bridge_->SetTimeTarget(target);
   }
+
+  // FIXME: If a non-viewer node is ever set here, it will fail to update the length
+  ViewerOutput* viewer = dynamic_cast<ViewerOutput*>(target);
+  if (viewer) {
+    ConnectViewerNode(viewer);
+  }
 }
 
 void CurveWidget::UpdateInputLabel()

app/widget/nodeparamview/nodeparamview.cpp

@@ -156,7 +156,9 @@ void NodeParamView::SetNodes(QList<Node *> nodes)
 
       items_.append(item);
 
-      QTimer::singleShot(1, item, &NodeParamViewItem::SignalAllKeyframes);
+      QMetaObject::invokeMethod(item,
+                                "SignalAllKeyframes",
+                                Qt::QueuedConnection);
 
       emit OpenedNode(node);
     }
@@ -218,6 +220,11 @@ const QList<Node *> &NodeParamView::nodes()
   return nodes_;
 }
 
+Node *NodeParamView::GetTimeTarget() const
+{
+  return keyframe_view_->GetTimeTarget();
+}
+
 void NodeParamView::UpdateItemTime(const int64_t &timestamp)
 {
   rational time = Timecode::timestamp_to_time(timestamp, keyframe_view_->timebase());

app/widget/nodeparamview/nodeparamview.h

@@ -40,6 +40,8 @@ public:
   void SetNodes(QList<Node*> nodes);
   const QList<Node*>& nodes();
 
+  Node* GetTimeTarget() const;
+
 signals:
   void InputDoubleClicked(NodeInput* input);