protected static void AnnotationsIsVisibleChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if ((bool)e.NewValue && GetContent(d) == null)
{
var image = d as Image;
var uielement = d as FrameworkElement;
var width = image?.Source?.Width ?? uielement.Width;
var height = image?.Source?.Height ?? uielement.Height;
AdornmentCollection layers = new AdornmentCollection();
SetAnnotationsLayer(d, new AnnotationsControl((FrameworkElement)d)
{
Name = "AnnotationsLayer", ContainerWidth = width, ContainerHeight = height
});
SetActionsLayer(d, CanvasLayer.New <ActionsAnnotationAdorner>((FrameworkElement)d, "ActionsLayer"));
SetMenuLayer(d, CanvasLayer.New <UIElement>((FrameworkElement)d, "MenuLayer"));
GetMenuLayer(d).AnnotationsControl = GetAnnotationsLayer(d);
var controlMenu = new AnnotationsControlMenu();
controlMenu.SetBinding(FrameworkElement.VisibilityProperty, new Binding(AnnotationsControl.IsInEditModeProperty.Name)
{
Source = GetAnnotationsLayer(d), Converter = new BoolToVisibilityConverter()
});
GetMenuLayer(d).GetItemsSource <UIElement>().Add(controlMenu);
layers.Add(GetAnnotationsLayer(d));
layers.Add(GetActionsLayer(d));
layers.Add(GetMenuLayer(d));
SetContent(d, layers);
SetAnnotationsChangedDelegate(d, (sender, changedEventArgs) =>
{
switch (changedEventArgs.Action)
{
case NotifyCollectionChangedAction.Add:
changedEventArgs.NewItems.OfType <AnnotationBase>().ToList().ForEach(_ => GetActionsLayer(d).GetItemsSource <ActionsAnnotationAdorner>().Add(_.ActionsAdorner));
break;
case NotifyCollectionChangedAction.Remove:
changedEventArgs.OldItems.OfType <AnnotationBase>().ToList().ForEach(_ => GetActionsLayer(d).GetItemsSource <ActionsAnnotationAdorner>().Remove(_.ActionsAdorner));
break;
case NotifyCollectionChangedAction.Reset:
GetActionsLayer(d).GetItemsSource <ActionsAnnotationAdorner>().Clear();
break;
default:
break;
}
});
GetAnnotationsLayer(d).Annotations.CollectionChanged += GetAnnotationsChangedDelegate(d);
}
SetIsVisible(d, (bool)e.NewValue);
}
public static void SetMenuLayer(DependencyObject element, CanvasLayer value) => element.SetValue(MenuLayerProperty, value);