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Work in progress on interactive tooltips as well as tooltip/popup unification. This is currently a bit of a mess...

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This commit is contained in:
Philipp Sumi
2016-01-01 19:54:52 +01:00
parent d26ca4483f
commit 95414fa18d
8 changed files with 755 additions and 58 deletions
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126
Hardcodet.NotifyIcon.Wpf/Source/NotifyIconWpf/TaskbarIcon.cs
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@@ -29,6 +29,7 @@ using System.Threading;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Data;
using System.Windows.Interop;
using System.Windows.Threading;
using Hardcodet.Wpf.TaskbarNotification.Interop;
@@ -67,6 +68,11 @@ namespace Hardcodet.Wpf.TaskbarNotification
/// </summary>
private readonly Timer singleClickTimer;
/// <summary>
/// Maintains opened tooltip popups.
/// </summary>
private ToolTipObserver toolTipObserver;
/// <summary>
/// A timer that is used to close open balloon tooltips.
/// </summary>
@@ -466,21 +472,23 @@ namespace Hardcodet.Wpf.TaskbarNotification
private void OnToolTipChange(bool visible)
{
//if we don't have a tooltip, there's nothing to do here...
if (TrayToolTipResolved == null) return;
//if (TrayToolTipResolved == null) return;
if (visible)
{
if (IsPopupOpen)
if (IsPopupOpen) //TODO return if IsEnabled is false
{
//ignore if we are already displaying something down there
return;
}
var args = RaisePreviewTrayToolTipOpenEvent();
//if the user handled the event by herself, we're done
if (args.Handled) return;
TrayToolTipResolved.IsOpen = true;
toolTipObserver.ShowToolTip();
//raise attached event first
if (TrayToolTip != null) RaiseToolTipOpenedEvent(TrayToolTip);
@@ -493,11 +501,16 @@ namespace Hardcodet.Wpf.TaskbarNotification
if (args.Handled) return;
//raise attached event first
if (TrayToolTip != null) RaiseToolTipCloseEvent(TrayToolTip);
if (TrayToolTip != null) RaiseToolTipCloseEvent(TrayToolTip); //TODO this must be fired with a delay once the observer really closed it!
TrayToolTipResolved.IsOpen = false;
//TrayToolTipResolved.IsOpen = false;
if (!toolTipObserver.IsMouseOverToolTip)
{
toolTipObserver.BeginCloseToolTip();
}
//bubble event
//TODO this must be fired with a delay once the observer really closed it!
RaiseTrayToolTipCloseEvent();
}
}
@@ -519,44 +532,64 @@ namespace Hardcodet.Wpf.TaskbarNotification
private void CreateCustomToolTip()
{
//check if the item itself is a tooltip
ToolTip tt = TrayToolTip as ToolTip;
var popup = TrayToolTip as Popup;
if (tt == null && TrayToolTip != null)
if (popup == null && TrayToolTip != null)
{
//create an invisible wrapper tooltip that hosts the UIElement
tt = new ToolTip();
tt.Placement = PlacementMode.Mouse;
//create an invisible popup that hosts the UIElement
popup = new Popup();
popup.AllowsTransparency = true;
//don't animate by default - devs can use attached
//events or override
popup.PopupAnimation = PopupAnimation.None; //TODO make this configurable
//the CreateRootPopup method outputs binding errors in the debug window because
//it tries to bind to "Popup-specific" properties in case they are provided by the child.
//We don't need that so just assign the control as the child.
popup.Child = TrayToolTip;
//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;
//popup.PlacementTarget = this;
//make sure the tooltip is invisible
tt.HasDropShadow = false;
tt.BorderThickness = new Thickness(0);
tt.Background = System.Windows.Media.Brushes.Transparent;
//setting the
tt.StaysOpen = true;
tt.Content = TrayToolTip;
popup.Placement = PlacementMode.Mouse;
}
else if (tt == null && !String.IsNullOrEmpty(ToolTipText))
else if (popup == null && !String.IsNullOrEmpty(ToolTipText))
{
//create a simple tooltip for the ToolTipText string
tt = new ToolTip();
tt.Content = ToolTipText;
//TODO create means to show a regular tooltip instead of this hackery
var toolTip = new ToolTip();
popup = new Popup(); //TODO hack
popup.ToolTip = toolTip;
toolTip.Content = ToolTipText;
//wire max width
var binding = new Binding
{
Path = new PropertyPath(Popup.IsOpenProperty),
Mode = BindingMode.OneWay,
Source = popup
};
BindingOperations.SetBinding(toolTip, System.Windows.Controls.ToolTip.IsOpenProperty, binding);
}
//the tooltip explicitly gets the DataContext of this instance.
//If there is no DataContext, the TaskbarIcon assigns itself
if (tt != null)
if (popup != null)
{
UpdateDataContext(tt, null, DataContext);
UpdateDataContext(popup, null, DataContext);
}
//store a reference to the used tooltip
SetTrayToolTipResolved(tt);
SetTrayToolTipResolved(popup);
if (popup != null)
{
//TODO that should just become a property setter on the observer, with null allowed
if(toolTipObserver == null) toolTipObserver = new ToolTipObserver(this, 500);
toolTipObserver.Popup = popup;
}
}
@@ -666,20 +699,8 @@ namespace Hardcodet.Wpf.TaskbarNotification
//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);
//activate element
FocusElement(TrayPopupResolved);
//raise attached event - item should never be null unless developers
//changed the CustomPopup directly...
@@ -690,6 +711,29 @@ namespace Hardcodet.Wpf.TaskbarNotification
}
}
/// <summary>
/// Activates a given UI element.
/// </summary>
private void FocusElement(Popup popup)
{
IntPtr handle = IntPtr.Zero;
if (popup.Child != null)
{
//try to get a handle on the popup itself (via its child)
HwndSource source = (HwndSource)PresentationSource.FromVisual(popup.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);
}
#endregion
#region Context Menu