private void Shapes_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
(e.NewItems[0] as INotifyPropertyChanged).PropertyChanged += Shapes_PropertyChanged;
ShapesListMenu.IsEnabled = true;
switch (e.NewItems[0])
{
case MyPoint point:
CanvasPaint.Children.Add(NewShapeForCancas(point));
ShapesListMenu.IsEnabled = false;
break;
case MyPolygon polygon:
CanvasPaint.Children.Add(NewShapeForCancas(polygon));
break;
default:
break;
}
if (!(e.NewItems[0] is MyPoint) && !isOpen)
{
bus.ChooseShape((e.NewItems[0] as MyShape).Name);
bus.FillShape(GetColor());
bus.ClearChoose();
}
break;
case NotifyCollectionChangedAction.Remove:
switch (e.OldItems[0])
{
case MyPoint point:
var points = CanvasPaint.Children.OfType <Ellipse>().Where(p => p.Name == MyPoint.pointName).ToList();
foreach (var item in points)
{
CanvasPaint.Children.Remove(item);
}
break;
default:
break;
}
break;
case NotifyCollectionChangedAction.Reset:
ShapesListMenu.IsEnabled = false;
action = null;
CanvasPaint.Children.Clear();
break;
}
}
private void ShapeItem_Click(object sender, RoutedEventArgs e)
{
bus.isNewPolyline = false;
Fill.IsEnabled = false;
switch (((MenuItem)sender).Name)
{
case "Ellipse":
action = bus.CreateEllipse;
bus.ClearChoose();
break;
case "Pentagon":
action = bus.CreatePentagon;
bus.ClearChoose();
break;
case "Hexagon":
action = bus.CreateHexagon;
bus.ClearChoose();
break;
case "Polygon":
action = bus.CreatePolygon;
bus.ClearChoose();
break;
case "Polyline":
action = bus.CreatePolyline;
bus.ClearChoose();
break;
case "Fill":
bus.FillShape(GetColor());
Fill.IsEnabled = true;
break;
default:
action = null;
bus.ClearChoose();
break;
}
CanvasPaint.MouseMove -= CanvasContainer_MouseMove;
}