public static MyTT Create(UIElement content)
{
MyTT wnd = new MyTT();
wnd.Content = content;
wnd.WindowStartupLocation = WindowStartupLocation.Manual;
wnd.WindowState = WindowState.Normal;
wnd.WindowStyle = WindowStyle.None;
wnd.ShowInTaskbar = false;
wnd.SizeToContent = SizeToContent.WidthAndHeight;
wnd.AllowsTransparency = true;
wnd.Background = System.Windows.Media.Brushes.Transparent;
wnd.Topmost = true;
var b = new Binding("DataContext")
{
Source = Application.Current.MainWindow
};
BindingOperations.SetBinding(wnd, DataContextProperty, b);
wnd.MouseEnter += wnd.OnMouseEnter;
wnd.MouseLeave += (sender, args) => { wnd._gotInside = false;
wnd.IsOpen = false; };
wnd.LostFocus += (sender, args) => { wnd.IsOpen = false; };
wnd.IsVisibleChanged += (sender, args) => wnd.IsOpen = wnd.Visibility == Visibility.Visible;
wnd.SourceInitialized += (sender, args) =>
{
HwndSource src = (HwndSource)HwndSource.FromVisual(wnd);
src.AddHook(wnd.WndProc);
};
return(wnd);
}
/// <summary>
/// Creates a <see cref="ToolTip"/> control that either
/// wraps the currently set <see cref="TrayToolTip"/>
/// control or the <see cref="ToolTipText"/> string.<br/>
/// If <see cref="TrayToolTip"/> itself is already
/// a <see cref="ToolTip"/> instance, it will be used directly.
/// </summary>
/// <remarks>We use a <see cref="ToolTip"/> rather than
/// <see cref="Popup"/> because there was no way to prevent a
/// popup from causing cyclic open/close commands if it was
/// placed under the mouse. ToolTip internally uses a Popup of
/// its own, but takes advance of Popup's internal <see cref="Popup.HitTestable"/>
/// property which prevents this issue.</remarks>
private void CreateCustomToolTip()
{
//check if the item itself is a tooltip
FrameworkElement tt = TrayToolTip as MyTT;
if (tt == null && TrayToolTip != null)
{
//create an invisible tooltip that hosts the UIElement
tt = MyTT.Create(TrayToolTip);
//tt.Placement = PlacementMode.Mouse;
//do *not* set the placement target, as it causes the popup to become hidden if the
//TaskbarIcon's parent is hidden, too. At runtime, the parent can be resolved through
//the ParentTaskbarIcon attached dependency property:
//tt.PlacementTarget = this;
//make sure the tooltip is invisible
//tt.HasDropShadow = false;
(tt as MyTT).BorderThickness = new Thickness(0);
(tt as MyTT).Background = System.Windows.Media.Brushes.Transparent;
}
else if (tt == null && !String.IsNullOrEmpty(ToolTipText))
{
//create a simple tooltip for the string
tt = new ToolTip();
var b = new Binding("DataContext")
{
Source = this
};
BindingOperations.SetBinding(tt, DataContextProperty, b);
(tt as ToolTip).Content = ToolTipText;
}
//the tooltip explicitly gets the DataContext of this instance.
//If there is no DataContext, the TaskbarIcon assigns itself
if (tt != null)
{
UpdateDataContext(tt, null, DataContext);
}
//store a reference to the used tooltip
SetTrayToolTipResolved(tt);
}
