private void XStartThumb_DragDelta(object sender, System.Windows.Controls.Primitives.DragDeltaEventArgs e)
{
TimeMarkerViewModel vm = DataContext as TimeMarkerViewModel;
if (vm == null)
{
return;
}
var orgStartTime = vm.Time;
if (Keyboard.Modifiers == (ModifierKeys.Control | ModifierKeys.Alt))
{
m_HorizontalOffsetAtDragStart = e.HorizontalChange;
}
else
{
vm.Time += TV.XToTime(e.HorizontalChange) - TV.XToTime(0);
if (Keyboard.Modifiers != ModifierKeys.Shift)
{
double snapTime = TV.TimeSnapHandler.CheckForSnapping(vm.Time, this);
if (!Double.IsNaN(snapTime))
{
vm.Time = snapTime;
}
}
}
//UpdateMappingShape();
App.Current.UpdateRequiredAfterUserInteraction = true;
e.Handled = true;
}
private void XTimeClip_DragDelta(object sender, System.Windows.Controls.Primitives.DragDeltaEventArgs e)
{
if (Keyboard.Modifiers == ModifierKeys.Control)
{
TimeMarkerViewModel vm = DataContext as TimeMarkerViewModel;
if (vm == null)
{
return;
}
double orgTime = vm.Time;
double delta = TV.XToTime(e.HorizontalChange) - TV.XToTime(0);
double snapTime = TV.TimeSnapHandler.CheckForSnapping(vm.Time + delta, this);
if (!Double.IsNaN(snapTime))
{
delta = snapTime - orgTime;
}
vm.Time += delta;
App.Current.UpdateRequiredAfterUserInteraction = true;
e.Handled = true;
}
}
private void XTimeClip_Thumb_DragCompleted(object sender, System.Windows.Controls.Primitives.DragCompletedEventArgs e)
{
if (Math.Abs(e.VerticalChange) < SystemParameters.MinimumVerticalDragDistance || Math.Abs(e.HorizontalChange) < SystemParameters.MinimumHorizontalDragDistance)
{
TimeMarkerViewModel vm = DataContext as TimeMarkerViewModel;
if (vm != null)
{
var list = new List <ISelectable>();
list.Add(vm.OperatorWidget);
App.Current.MainWindow.CompositionView.CompositionGraphView.SelectedElements = list;
}
}
}
/**
* Note: This is a very unfortunate solution to get the Operator title into the TimeMarkerControl.
* To make this possible, we have to introduce ClipNamePropertry as a mediator and bind this to
* the OperatorWidget. To make it worse, the OperatorWidget is only available in the DataContext
* after TimeMarkerControl ist loaded.
*
* This function creates the second binding in the chain:
*
* TimeMarkerControl.TextBlock.Text ---> TimeMarkerControl.ClipName ---> DataContext(ViewModel).OperatorWidget.XOperatorLabel.Text
*/
private void CreateNameBinding()
{
TimeMarkerViewModel vm = DataContext as TimeMarkerViewModel;
if (vm != null)
{
var nameBinding = new Binding()
{
UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged,
Source = vm.OperatorWidget.XOperatorLabel,
Path = new PropertyPath("Text"),
};
this.SetBinding(TimeMarkerControl.ClipNameProperty, nameBinding);
}
}
public SnapResult CheckForSnap(double time)
{
TimeMarkerViewModel vm = DataContext as TimeMarkerViewModel;
if (vm != null)
{
double distanceToStartTime = Math.Abs(time - vm.Time) * TV.TimeScale;
if (distanceToStartTime < SNAP_THRESHOLD)
{
return(new SnapResult()
{
SnapToValue = vm.Time, Force = distanceToStartTime
});
}
}
return(null);
}
