/// <summary>
/// Displays the <see cref="TrayPopup"/> control if
/// it was set.
/// </summary>
private void ShowTrayPopup(Point cursorPosition)
{
if (IsDisposed)
{
return;
}
//raise preview event no matter whether popup is currently set
//or not (enables client to set it on demand)
var args = RaisePreviewTrayPopupOpenEvent();
if (args.Handled)
{
return;
}
if (TrayPopup != null)
{
//use absolute position, but place the popup centered above the icon
TrayPopupResolved.Placement = PlacementMode.AbsolutePoint;
Point position = TrayInfo.GetTrayLocation();
TrayPopupResolved.HorizontalOffset = position.X - 20;
TrayPopupResolved.VerticalOffset = position.Y - 1;
//open popup
TrayPopupResolved.IsOpen = true;
IntPtr handle = IntPtr.Zero;
if (TrayPopupResolved.Child != null)
{
//try to get a handle on the popup itself (via its child)
HwndSource source = (HwndSource)PresentationSource.FromVisual(TrayPopupResolved.Child);
if (source != null)
{
handle = source.Handle;
}
}
//if we don't have a handle for the popup, fall back to the message sink
if (handle == IntPtr.Zero)
{
handle = messageSink.MessageWindowHandle;
}
//activate either popup or message sink to track deactivation.
//otherwise, the popup does not close if the user clicks somewhere else
WinApi.SetForegroundWindow(handle);
//raise attached event - item should never be null unless developers
//changed the CustomPopup directly...
if (TrayPopup != null)
{
RaisePopupOpenedEvent(TrayPopup);
}
//bubble routed event
RaiseTrayPopupOpenEvent();
}
}
public ChimeHelperTray(TaskbarIcon trayIcon)
{
_tray = trayIcon;
_tray.DataContext = MEETINGS_LOADING;
// workaround for an apparent bug in TrayIcon where the first menu appearance
// often happens in one of the corners of the screen. Calling GetTrayLocation
// seems to wake Windows up to the real location which is then used subsequently.
TrayInfo.GetTrayLocation();
}
/// <summary>
/// Shows a custom control as a tooltip in the tray location.
/// </summary>
/// <param name="balloon"></param>
/// <param name="animation">An optional animation for the popup.</param>
/// <param name="timeout">The time after which the popup is being closed.
/// Submit null in order to keep the balloon open inde
/// </param>
/// <exception cref="ArgumentNullException">If <paramref name="balloon"/>
/// is a null reference.</exception>
public void ShowCustomBalloon(UIElement balloon, PopupAnimation animation, int?timeout)
{
Dispatcher dispatcher = this.GetDispatcher();
if (!dispatcher.CheckAccess())
{
dispatcher.InvokeAsync(
(() => ShowCustomBalloon(balloon, animation, timeout)),
DispatcherPriority.Normal
);
return;
}
if (balloon == null)
{
throw new ArgumentNullException("balloon");
}
if (timeout.HasValue && timeout < 500)
{
throw new ArgumentOutOfRangeException("timeout", string.Format("Invalid timeout of {0} milliseconds. Timeout must be at least 500 ms", timeout));
}
if (this.IsDisposed)
{
throw new ObjectDisposedException(this.Name ?? this.GetType().Name);
}
//make sure we don't have an open balloon
lock (this.SyncLock)
{
CloseBalloon();
}
// create an invisible popup that hosts the UIElement
Popup popup = new Popup
{
AllowsTransparency = true
};
//provide the popup with the taskbar icon's data context
UpdateDataContext(popup, null, DataContext);
//don't animate by default - devs can use attached events or override
popup.PopupAnimation = animation;
//in case the balloon is cleaned up through routed events, the
//control didn't remove the balloon from its parent popup when
//if was closed the last time - just make sure it doesn't have
//a parent that is a popup
var parent = LogicalTreeHelper.GetParent(balloon) as Popup;
if (parent != null)
{
parent.Child = null;
}
if (parent != null)
{
string msg =
"Cannot display control [{0}] in a new balloon popup - that control already has a parent. You may consider creating new balloons every time you want to show one.";
msg = String.Format(msg, balloon);
throw new InvalidOperationException(msg);
}
popup.Child = balloon;
//don't set the PlacementTarget as it causes the popup to become hidden if the
//TaskbarIcon's parent is hidden, too...
//popup.PlacementTarget = this;
popup.Placement = PlacementMode.AbsolutePoint;
popup.StaysOpen = true;
Point position = TrayInfo.GetTrayLocation();
position = GetDeviceCoordinates(position);
popup.HorizontalOffset = position.X - 1;
popup.VerticalOffset = position.Y - 1;
//store reference
lock (this.SyncLock)
{
SetCustomBalloon(popup);
}
//assign this instance as an attached property
SetParentTaskbarIcon(balloon, this);
//fire attached event
RaiseBalloonShowingEvent(balloon, this);
//display item
popup.IsOpen = true;
if (timeout.HasValue)
{
//register timer to close the popup
balloonCloseTimer.Change(timeout.Value, Timeout.Infinite);
}
}
/// <summary>
/// Shows a custom control as a tooltip in the tray location.
/// </summary>
/// <param name="balloon"></param>
/// <param name="animation">An optional animation for the popup.</param>
/// <param name="timeout">The time after which the popup is being closed.
/// Submit null in order to keep the balloon open inde
/// </param>
/// <exception cref="ArgumentNullException">If <paramref name="balloon"/>
/// is a null reference.</exception>
public void ShowCustomBalloon(UIElement balloon, PopupAnimation animation, int?timeout)
{
if (!Application.Current.Dispatcher.CheckAccess())
{
var action = new Action(() => ShowCustomBalloon(balloon, animation, timeout));
Application.Current.Dispatcher.Invoke(DispatcherPriority.Normal, action);
return;
}
if (balloon == null)
{
throw new ArgumentNullException("balloon");
}
if (timeout.HasValue && timeout < 500)
{
string msg = "Invalid timeout of {0} milliseconds. Timeout must be at least 500 ms";
msg = String.Format(msg, timeout);
throw new ArgumentOutOfRangeException("timeout", msg);
}
EnsureNotDisposed();
//make sure we don't have an open balloon
lock (this)
{
CloseBalloon();
}
//create an invisible popup that hosts the UIElement
Popup popup = new Popup();
popup.AllowsTransparency = true;
//provide the popup with the taskbar icon's data context
UpdateDataContext(popup, null, DataContext);
//don't animate by default - devs can use attached
//events or override
popup.PopupAnimation = animation;
popup.Child = balloon;
//don't set the PlacementTarget as it causes the popup to become hidden if the
//TaskbarIcon's parent is hidden, too...
//popup.PlacementTarget = this;
popup.Placement = PlacementMode.AbsolutePoint;
popup.StaysOpen = true;
Point position = TrayInfo.GetTrayLocation();
popup.HorizontalOffset = position.X - 1;
popup.VerticalOffset = position.Y - 1;
//store reference
lock (this)
{
SetCustomBalloon(popup);
}
//assign this instance as an attached property
SetParentTaskbarIcon(balloon, this);
//fire attached event
RaiseBalloonShowingEvent(balloon, this);
//display item
popup.IsOpen = true;
if (timeout.HasValue)
{
//register timer to close the popup
balloonCloseTimer.Change(timeout.Value, Timeout.Infinite);
}
return;
}
public Point GetPopupTrayPosition()
{
return(TrayInfo.GetTrayLocation());
}
public static MessageToken <TipItem> ShowMessage(System.Windows.FrameworkElement balloon,
ObservableCollection <TipItem> data, int?timeout,
NotifyPosition position = NotifyPosition.ActiveScreen, PopupAnimation animation = PopupAnimation.None)
{
var dispatcher = balloon.Dispatcher;
if (!dispatcher.CheckAccess())
{
return(dispatcher.Invoke(DispatcherPriority.Normal,
(Func <MessageToken <TipItem> >)(() =>
ShowMessage(balloon, data, timeout, position, animation))) as
MessageToken <TipItem>);
}
if (balloon == null)
{
throw new ArgumentNullException("balloon");
}
if (timeout.HasValue && timeout < 500)
{
var msg = "Invalid timeout of {0} milliseconds. Timeout must be at least 500 ms";
msg = String.Format(msg, timeout);
throw new ArgumentOutOfRangeException("timeout", msg);
}
if (LogicalTreeHelper.GetParent(balloon) is Popup parent)
{
parent.Child = null;
var msg =
"Cannot display control [{0}] in a new balloon popup - that control already has a parent. You may consider creating new balloons every time you want to show one.";
msg = String.Format(msg, balloon);
throw new InvalidOperationException(msg);
}
var popup = new Popup();
popup.AllowsTransparency = true;
popup.PopupAnimation = animation;
popup.Placement = PlacementMode.AbsolutePoint;
popup.StaysOpen = true;
popup.DataContext = data;
Point point;
switch (position)
{
case NotifyPosition.Caret:
{
var rect = Utils.Window.GetCurrentWindowCaretPosition();
var X = (rect.Left + rect.Width / 2 - balloon.ActualWidth / 2);
var Y = (rect.Bottom + rect.Height / 2 - balloon.ActualHeight / 2);
if (X == 0 && Y == 0)
{
goto case NotifyPosition.ActiveWindowCenter;
}
point = new Point(X, Y);
break;
}
case NotifyPosition.ActiveWindowCenter:
{
var rect = Utils.Window.GetCurrentWindowRect();
var X = (rect.X + rect.Width / 2 - balloon.ActualWidth / 2);
var Y = (rect.Y + rect.Height / 2 - balloon.ActualHeight / 2);
point = new Point(X, Y);
break;
}
case NotifyPosition.ActiveScreen:
{
var screen = Screen.FromHandle(Utils.Window.CurrentWindowHandle);
if (screen.Equals(Screen.PrimaryScreen))
{
var p = TrayInfo.GetTrayLocation();
point = new Point(p.X, p.Y);
break;
}
var bounds = screen.Bounds;
var X = bounds.X + bounds.Width;
var Y = bounds.Y + bounds.Height;
point = new Point(X, Y);
break;
}
case NotifyPosition.Default:
{
var p = TrayInfo.GetTrayLocation();
point = new Point(p.X, p.Y);
break;
}
default:
throw new ArgumentOutOfRangeException(nameof(position) + " not supported", position, null);
}
popup.Child = balloon;
popup.HorizontalOffset = point.X + 1;
popup.VerticalOffset = point.Y - 2;
balloon.Focusable = true;
IInputElement element = null;
popup.Opened += (s, a) =>
{
element = Keyboard.FocusedElement;
var source = (HwndSource)PresentationSource.FromVisual(balloon);
var handle = source.Handle;
PInvokes.SetForegroundWindow(handle);
Keyboard.Focus(balloon);
};
popup.IsOpen = true;
popup.Focus();
var r = new MessageToken <TipItem>(popup);
popup.Closed += (s, a) =>
{
Keyboard.Focus(element);
r.Close();
};
void TimerTick(object sender, EventArgs e)
{
r.Timer.Tick -= TimerTick;
r.Close();
}
if (timeout.HasValue)
{
r.Timer = new DispatcherTimer {
Interval = TimeSpan.FromMilliseconds(timeout.Value)
};
r.Timer.Tick += TimerTick;
r.Timer.Start();
}
return(r);
}
