예제 #1
0
        /// <summary>
        /// Displays the <see cref="ContextMenu"/> if it was set.
        /// </summary>
        private void ShowContextMenu(Point cursorPosition)
        {
            if (IsDisposed)
            {
                return;
            }

            // raise preview event no matter whether context menu is currently set
            // or not (enables client to set it on demand)
            var args = RaisePreviewTrayContextMenuOpenEvent();

            if (args.Handled)
            {
                return;
            }

            if (ContextMenu == null)
            {
                return;
            }

            // use absolute positioning. We need to set the coordinates, or a delayed opening
            // (e.g. when left-clicked) opens the context menu at the wrong place if the mouse
            // is moved!
            ContextMenu.Placement        = PlacementMode.AbsolutePoint;
            ContextMenu.HorizontalOffset = cursorPosition.X;
            ContextMenu.VerticalOffset   = cursorPosition.Y;
            ContextMenu.IsOpen           = true;

            IntPtr handle = IntPtr.Zero;

            // try to get a handle on the context itself
            HwndSource source = (HwndSource)PresentationSource.FromVisual(ContextMenu);

            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 the context menu or the message window to track deactivation - otherwise, the context menu
            // does not close if the user clicks somewhere else. With the message window
            // fallback, the context menu can't receive keyboard events - should not happen though
            WinApi.SetForegroundWindow(handle);

            // bubble event
            RaiseTrayContextMenuOpenEvent();
        }
예제 #2
0
        /// <summary>
        /// Processes mouse events, which are bubbled
        /// through the class' routed events, trigger
        /// certain actions (e.g. show a popup), or
        /// both.
        /// </summary>
        /// <param name="me">Event flag.</param>
        private void OnMouseEvent(MouseEvent me)
        {
            if (IsDisposed)
            {
                return;
            }

            switch (me)
            {
            case MouseEvent.MouseMove:
                RaiseTrayMouseMoveEvent();
                // immediately return - there's nothing left to evaluate
                return;

            case MouseEvent.IconRightMouseDown:
                RaiseTrayRightMouseDownEvent();
                break;

            case MouseEvent.IconLeftMouseDown:
                RaiseTrayLeftMouseDownEvent();
                break;

            case MouseEvent.IconRightMouseUp:
                RaiseTrayRightMouseUpEvent();
                break;

            case MouseEvent.IconLeftMouseUp:
                RaiseTrayLeftMouseUpEvent();
                break;

            case MouseEvent.IconMiddleMouseDown:
                RaiseTrayMiddleMouseDownEvent();
                break;

            case MouseEvent.IconMiddleMouseUp:
                RaiseTrayMiddleMouseUpEvent();
                break;

            case MouseEvent.IconDoubleClick:
                // cancel single click timer
                singleClickTimer.Change(Timeout.Infinite, Timeout.Infinite);
                // bubble event
                RaiseTrayMouseDoubleClickEvent();
                break;

            case MouseEvent.BalloonToolTipClicked:
                RaiseTrayBalloonTipClickedEvent();
                break;

            default:
                throw new ArgumentOutOfRangeException(nameof(me), "Missing handler for mouse event flag: " + me);
            }


            // get mouse coordinates
            Point cursorPosition = new Point();

            if (messageSink.Version == NotifyIconVersion.Vista)
            {
                // physical cursor position is supported for Vista and above
                WinApi.GetPhysicalCursorPos(ref cursorPosition);
            }
            else
            {
                WinApi.GetCursorPos(ref cursorPosition);
            }

            cursorPosition = TrayInfo.GetDeviceCoordinates(cursorPosition);

            bool isLeftClickCommandInvoked = false;

            // show popup, if requested
            if (me.IsMatch(PopupActivation))
            {
                if (me == MouseEvent.IconLeftMouseUp)
                {
                    // show popup once we are sure it's not a double click
                    singleClickTimerAction = () =>
                    {
                        LeftClickCommand.ExecuteIfEnabled(LeftClickCommandParameter, LeftClickCommandTarget ?? this);
                        ShowTrayPopup(cursorPosition);
                    };
                    singleClickTimer.Change(DoubleClickWaitTime, Timeout.Infinite);
                    isLeftClickCommandInvoked = true;
                }
                else
                {
                    // show popup immediately
                    ShowTrayPopup(cursorPosition);
                }
            }


            // show context menu, if requested
            if (me.IsMatch(MenuActivation))
            {
                if (me == MouseEvent.IconLeftMouseUp)
                {
                    // show context menu once we are sure it's not a double click
                    singleClickTimerAction = () =>
                    {
                        LeftClickCommand.ExecuteIfEnabled(LeftClickCommandParameter, LeftClickCommandTarget ?? this);
                        ShowContextMenu(cursorPosition);
                    };
                    singleClickTimer.Change(DoubleClickWaitTime, Timeout.Infinite);
                    isLeftClickCommandInvoked = true;
                }
                else
                {
                    // show context menu immediately
                    ShowContextMenu(cursorPosition);
                }
            }

            // make sure the left click command is invoked on mouse clicks
            if (me == MouseEvent.IconLeftMouseUp && !isLeftClickCommandInvoked)
            {
                // show context menu once we are sure it's not a double click
                singleClickTimerAction =
                    () =>
                {
                    LeftClickCommand.ExecuteIfEnabled(LeftClickCommandParameter, LeftClickCommandTarget ?? this);
                };
                singleClickTimer.Change(DoubleClickWaitTime, Timeout.Infinite);
            }
        }
예제 #3
0
        /// <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)
            {
                return;
            }

            // use absolute position, but place the popup centered above the icon
            TrayPopupResolved.Placement        = PlacementMode.AbsolutePoint;
            TrayPopupResolved.HorizontalOffset = cursorPosition.X;
            TrayPopupResolved.VerticalOffset   = cursorPosition.Y;

            // 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();
        }
예제 #4
0
        /// <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 indefinitely
        /// </param>
        /// <exception cref="ArgumentNullException">If <paramref name="balloon"/>
        /// is a null reference.</exception>
        public void ShowCustomBalloon(UIElement balloon, PopupAnimation animation, int?timeout)
        {
            var dispatcher = this.GetDispatcher();

            if (!dispatcher.CheckAccess())
            {
                var action = new Action(() => ShowCustomBalloon(balloon, animation, timeout));
                dispatcher.Invoke(DispatcherPriority.Normal, action);
                return;
            }

            if (balloon == null)
            {
                throw new ArgumentNullException(nameof(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(nameof(timeout), msg);
            }

            EnsureNotDisposed();

            // make sure we don't have an open balloon
            lock (lockObject)
            {
                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 - developers 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 = CustomPopupPosition != null?CustomPopupPosition() : GetPopupTrayPosition();

            popup.HorizontalOffset = position.X - 1;
            popup.VerticalOffset   = position.Y - 1;

            //store reference
            lock (lockObject)
            {
                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);
            }
        }