private static bool TrySnappingToOperatorsConnectedBelow(OperatorWidget el, List <OperatorWidget> dragGroup)
{
var tgt = el as OperatorWidget;
if (tgt == null)
{
return(false);
}
var op = (from opBelow in tgt.GetOpsConnectedToInputs()
where !dragGroup.Contains(opBelow) &&
!opBelow.CurrentlyDragged() &&
Math.Abs(el.Position.Y + CompositionGraphView.GRID_SIZE - opBelow.Position.Y) < VERTICAL_DISTANCE_SNAP_THRESHOLD &&
el.GetHorizontalOverlapWith(opBelow) > HORIZONTAL_OVERLAP_SNAP_THRESHOD
select opBelow).FirstOrDefault();
if (op == null)
{
return(false);
}
double dx = el.Position.X - op.Position.X;
el.Position = new Point(el.Position.X - ((dx + 0.5 * CompositionGraphView.GRID_SIZE) % CompositionGraphView.GRID_SIZE) + 0.5 * CompositionGraphView.GRID_SIZE,
op.Position.Y - CompositionGraphView.GRID_SIZE);
return(true);
}
/**
* Note: It's interesting that this handler does not use the event properties but rather
* directly accesses the sender's internal property to get a complete list of all selected elements.
*/
public void SelectionChangedEventHandler(object sender, SelectionHandler.SelectionChangedEventArgs args)
{
var selectionHandler = sender as SelectionHandler;
if (selectionHandler != null)
{
// Clear up all handlers
foreach (var item in m_ObservedOperatorWidgets)
{
OperatorWidget op = item as OperatorWidget;
if (op != null)
{
op.Operator.ModifiedEvent -= OperatorModifiedHandler;
}
}
m_FocusedCurves.Clear();
m_ObservedOperatorWidgets.Clear();
// Listen to changes of selected ops
foreach (var item in selectionHandler.SelectedElements)
{
var op = item as OperatorWidget;
if (op != null)
{
op.Operator.ModifiedEvent += OperatorModifiedHandler;
m_ObservedOperatorWidgets.Add(op);
}
}
//CustomCommands.FitCurveValueRangeCommand.Execute(null, this);
ShowCurvesForSelectedOperators();
FitValueRange();
}
}
public TimeClipViewModel(OperatorWidget op)
{
OperatorWidget = op;
m_TimeClip = op.Operator.InternalParts[0].Func as ITimeClip;
op.Operator.InternalParts[0].ChangedEvent += ForwardChangedNotification;
BindingOperations.SetBinding(op, OperatorWidget.IsSelectedProperty, new Binding("IsSelected")
{
Source = this, Mode = BindingMode.TwoWay
});
}
private static void AddSnappedNeighboursToPool(List <OperatorWidget> pool, OperatorWidget el)
{
pool.Add(el);
var parentsAndChildren = new List <OperatorWidget>();
parentsAndChildren.AddRange((el as OperatorWidget).GetOperatorsSnappedAbove());
parentsAndChildren.AddRange((el as OperatorWidget).GetOperatorsSnappedBelow());
foreach (var opWi in parentsAndChildren)
{
if (!pool.Contains(opWi))
{
AddSnappedNeighboursToPool(pool, opWi);
}
}
}
public AnnotationViewModel(OperatorWidget opWidget)
{
OperatorWidget = opWidget;
_operator = OperatorWidget.Operator;
_operatorFunc = _operator.InternalParts[0].Func as IAnnotation;
Position = _operator.Position;
Width = _operator.Width;
_operator.InternalParts[0].ChangedEvent += ForwardChangedNotification;
_operator.PositionChangedEvent += Operator_PositionChangedEvent;
_operator.WidthChangedEvent += Operator_WidthChangedEvent;
BindingOperations.SetBinding(opWidget, OperatorWidget.IsSelectedProperty, new Binding("IsSelected")
{
Source = this, Mode = BindingMode.TwoWay
});
}
public TimeMarkerViewModel(OperatorWidget op)
{
OperatorWidget = op;
_TimeMarker = op.Operator.InternalParts[0].Func as ITimeMarker;
//FixMe: Binding the ForwardChangedNotification to the ChangedEvent is extremely slow.
// Additionally it's unclear what would be the reason for triggering an update of the operator's parameters
// depending on it's input.
//op.Operator.InternalParts[0].ChangedEvent += ForwardChangedNotification;
//FixMe: Binding to magic numbers of the TimeClip parameters is evil.
op.Operator.Inputs[0].ChangedEvent += (o, a) => ForwardChangedNotification();
op.Operator.Inputs[1].ChangedEvent += (o, a) => ForwardChangedNotification();
op.Operator.Inputs[2].ChangedEvent += (o, a) => ForwardChangedNotification();
op.Operator.Inputs[3].ChangedEvent += (o, a) => ForwardChangedNotification();
op.Operator.Inputs[4].ChangedEvent += (o, a) => ForwardChangedNotification();
op.Operator.PropertyChanged += (o, a) => ForwardChangedNotification();
BindingOperations.SetBinding(op, OperatorWidget.IsSelectedProperty, new Binding("IsSelected")
{
Source = this, Mode = BindingMode.TwoWay
});
}
public OperatorSnappingHelper(OperatorWidget movedOperator)
{
MovingOperator = movedOperator;
}