/// <summary>
/// Invoke the panning event.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">The pan event.</param>
internal void InvokePanning(View sender, PanEvent e)
{
Panning?.Invoke(sender, new PanEventArgs(e));
if (e.State == GestureState.Ended && Command is ICommand cmd && cmd.CanExecute(CommandParameter))
{
cmd.Execute(CommandParameter);
}
}
protected override void OnPropertyChanged(DependencyPropertyChangedEventArgs e)
{
base.OnPropertyChanged(e);
switch (e.Property.Name)
{
case "Scale":
Zooming?.Invoke(this, new ZoomEventArgs()
{
OldScale = (double)e.OldValue,
NewScale = (double)e.NewValue
});
break;
case "OffsetX":
case "OffsetY":
Panning?.Invoke(this, EventArgs.Empty);
break;
}
}