public void RegisterPopup (Popup popup)
{
var width = popup.WidthRequest ?? 100;
var height = popup.HeightRequest ?? 50;
var surface = new GtkSurface (popup, 0, 0, width, height, Gtk.WindowType.Popup);
popup.Opened += (sender, e) =>
{
var p = popup.PlacementTarget.PointToScreen (new Point (0, popup.PlacementTarget.DesiredSize.Height));
surface.Move ((int)(p.X + popup.HorizontalOffset), (int)(p.Y + popup.VerticalOffset));
surface.ShowSurface ();
};
popup.Closed += (sender, e) => surface.Hide ();
}
private static UIElement MenuItemTemplate (UIElement element)
{
var header = new ContentControl ();
BindingOperations.SetBinding (element.GetProperty ("Header"), header.GetProperty ("Content"));
var popup = new Popup ()
{
PlacementTarget = element,
VerticalOffset = 6,
HorizontalOffset = -5,
};
BindingOperations.SetBinding (element.GetProperty ("ItemsPanel"), popup.GetProperty ("Child"));
BindingOperations.SetBinding (element.GetProperty ("IsSubmenuOpen"), popup.GetProperty ("IsOpen"));
return header;
}
public void RegisterPopup (Popup popup)
{
aplication.RegisterPopup (popup);
}