public void Show(Xwt.Popover.Position orientation, Xwt.Widget reference, Xwt.Rectangle positionRect, Widget child)
{
popover.Content = (Gtk.Widget)((WidgetBackend)Toolkit.GetBackend(child)).NativeWidget;
popover.ArrowPosition = orientation;
popover.BackgroundColor = BackgroundColor.ToCairoColor();
popover.Padding = frontend.Padding;
var parent = (WindowFrameBackend)Toolkit.GetBackend(reference.ParentWindow);
if (popover.TransientFor != parent.Window)
{
if (popover.TransientFor != null)
{
popover.TransientFor.FocusInEvent -= HandleParentFocusInEvent;
}
popover.TransientFor = parent.Window;
popover.TransientFor.FocusInEvent += HandleParentFocusInEvent;
}
popover.Hidden += PopoverHidden;
var screenBounds = reference.ScreenBounds;
if (positionRect == Rectangle.Zero)
{
positionRect = new Rectangle(Point.Zero, screenBounds.Size);
}
positionRect = positionRect.Offset(screenBounds.Location);
popover.Show();
popover.Present();
popover.GrabFocus();
int w, h;
popover.GetSize(out w, out h);
UpdatePopoverPosition(positionRect, w, h);
popover.SizeAllocated += (o, args) => {
UpdatePopoverPosition(positionRect, args.Allocation.Width, args.Allocation.Height);
popover.GrabFocus();
};
}
