/// <inheritdoc/>
protected override void OnDetachedFromLogicalTree(LogicalTreeAttachmentEventArgs e)
{
base.OnDetachedFromLogicalTree(e);
_topLevel = null;
_popupRoot?.Dispose();
_popupRoot = null;
}
internal static Point GetPosition(Control target, PlacementMode placement, PopupRoot popupRoot, double horizontalOffset, double verticalOffset)
{
var zero = default(Point);
var mode = placement;
if (target?.GetVisualRoot() == null)
{
mode = PlacementMode.Pointer;
}
switch (mode)
{
case PlacementMode.Pointer:
if (popupRoot != null)
{
// Scales the Horizontal and Vertical offset to screen co-ordinates.
var screenOffset = new Point(horizontalOffset * (popupRoot as ILayoutRoot).LayoutScaling,
verticalOffset * (popupRoot as ILayoutRoot).LayoutScaling);
return((((IInputRoot)popupRoot)?.MouseDevice?.Position ?? default(Point)) + screenOffset);
}
return(default(Point));
case PlacementMode.Bottom:
return(target?.PointToScreen(new Point(0 + horizontalOffset, target.Bounds.Height + verticalOffset)) ??
zero);
case PlacementMode.Right:
return(target?.PointToScreen(new Point(target.Bounds.Width + horizontalOffset, 0 + verticalOffset)) ?? zero);
default:
throw new InvalidOperationException("Invalid value for Popup.PlacementMode");
}
}
/// <summary>
/// Opens the popup.
/// </summary>
public void Open()
{
if (_popupRoot == null)
{
_popupRoot = new PopupRoot(DependencyResolver)
{
[~ContentControl.ContentProperty] = this[~ChildProperty],
[~WidthProperty] = this[~WidthProperty],
[~HeightProperty] = this[~HeightProperty],
[~MinWidthProperty] = this[~MinWidthProperty],
[~MaxWidthProperty] = this[~MaxWidthProperty],
[~MinHeightProperty] = this[~MinHeightProperty],
[~MaxHeightProperty] = this[~MaxHeightProperty],
};
((ISetLogicalParent)_popupRoot).SetParent(this);
}
_popupRoot.Position = GetPosition();
if (_topLevel == null && PlacementTarget != null)
{
_topLevel = PlacementTarget.GetSelfAndLogicalAncestors().First(x => x is TopLevel) as TopLevel;
}
if (_topLevel != null)
{
var window = _topLevel as Window;
if (window != null)
{
window.Deactivated += WindowDeactivated;
}
else
{
var parentPopuproot = _topLevel as PopupRoot;
if (parentPopuproot != null && parentPopuproot.Parent != null)
{
((Popup)(parentPopuproot.Parent)).Closed += ParentClosed;
}
}
_topLevel.AddHandler(PointerPressedEvent, PointerPressedOutside, RoutingStrategies.Tunnel);
_nonClientListener = InputManager.Instance.Process.Subscribe(ListenForNonClientClick);
}
PopupRootCreated?.Invoke(this, EventArgs.Empty);
_popupRoot.Show();
_ignoreIsOpenChanged = true;
IsOpen = true;
_ignoreIsOpenChanged = false;
Opened?.Invoke(this, EventArgs.Empty);
}
/// <inheritdoc/>
protected override void OnDetachedFromLogicalTree(LogicalTreeAttachmentEventArgs e)
{
base.OnDetachedFromLogicalTree(e);
_topLevel = null;
if (_popupRoot != null)
{
((ISetLogicalParent)_popupRoot).SetParent(null);
_popupRoot.Dispose();
_popupRoot = null;
}
}
private static IControl PopupRootTemplate(PopupRoot control)
{
return new ContentPresenter
{
Name = "PART_ContentPresenter",
[~ContentPresenter.ContentProperty] = control[~ContentControl.ContentProperty],
};
}
/// <summary>
/// Called when the pointer leaves a control with an attached tooltip.
/// </summary>
/// <param name="sender">The event sender.</param>
/// <param name="e">The event args.</param>
private static void ControlPointerLeave(object sender, PointerEventArgs e)
{
var control = (Control)sender;
if (control == s_current)
{
if (s_popup != null)
{
// Clear the ToolTip's Content in case it has control content: this will
// reset its visual parent allowing it to be used again.
((ToolTip)s_popup.Content).Content = null;
// Dispose of the popup.
s_popup.Dispose();
s_popup = null;
}
s_show.OnNext(null);
}
}
/// <summary>
/// Shows a tooltip for the specified control.
/// </summary>
/// <param name="control">The control.</param>
private static void ShowToolTip(Control control)
{
if (control != null && control.IsVisible && control.GetVisualRoot() != null)
{
if (s_popup != null)
{
throw new AvaloniaInternalException("Previous ToolTip not disposed.");
}
var cp = MouseDevice.Instance?.GetPosition(control);
var position = control.PointToScreen(cp ?? new Point(0, 0)) + new Vector(0, 22);
s_popup = new PopupRoot();
((ISetLogicalParent)s_popup).SetParent(control);
s_popup.Content = new ToolTip { Content = GetTip(control) };
s_popup.Position = position;
s_popup.Show();
s_current = control;
}
}
/// <inheritdoc/>
protected override void OnDetachedFromLogicalTree(LogicalTreeAttachmentEventArgs e)
{
base.OnDetachedFromLogicalTree(e);
_topLevel = null;
_popupRoot?.Dispose();
_popupRoot = null;
}
/// <summary>
/// Shows a tooltip for the specified control.
/// </summary>
/// <param name="control">The control.</param>
private static void ShowToolTip(Control control)
{
if (control != null && control.IsVisible && control.GetVisualRoot() != null)
{
if (s_popup == null)
{
s_popup = new PopupRoot
{
Content = new ToolTip(),
};
((ISetLogicalParent)s_popup).SetParent(control);
}
var cp = MouseDevice.Instance?.GetPosition(control);
var position = control.PointToScreen(cp ?? new Point(0, 0)) + new Vector(0, 22);
((ToolTip)s_popup.Content).Content = GetTip(control);
s_popup.Position = position;
s_popup.Show();
s_current = control;
}
}
/// <summary>
/// Opens the popup.
/// </summary>
public void Open()
{
if (_popupRoot == null)
{
_popupRoot = new PopupRoot(DependencyResolver)
{
[~ContentControl.ContentProperty] = this[~ChildProperty],
[~WidthProperty] = this[~WidthProperty],
[~HeightProperty] = this[~HeightProperty],
[~MinWidthProperty] = this[~MinWidthProperty],
[~MaxWidthProperty] = this[~MaxWidthProperty],
[~MinHeightProperty] = this[~MinHeightProperty],
[~MaxHeightProperty] = this[~MaxHeightProperty],
};
((ISetLogicalParent)_popupRoot).SetParent(this);
}
_popupRoot.Position = GetPosition();
if (_topLevel == null && PlacementTarget != null)
{
_topLevel = PlacementTarget.GetSelfAndLogicalAncestors().First(x => x is TopLevel) as TopLevel;
}
if (_topLevel != null)
{
_topLevel.Deactivated += TopLevelDeactivated;
_topLevel.AddHandler(PointerPressedEvent, PointerPressedOutside, RoutingStrategies.Tunnel);
_nonClientListener = InputManager.Instance.Process.Subscribe(ListenForNonClientClick);
}
PopupRootCreated?.Invoke(this, EventArgs.Empty);
_popupRoot.Show();
IsOpen = true;
Opened?.Invoke(this, EventArgs.Empty);
}
/// <inheritdoc/>
protected override void OnDetachedFromLogicalTree(LogicalTreeAttachmentEventArgs e)
{
base.OnDetachedFromLogicalTree(e);
_topLevel = null;
if (_popupRoot != null)
{
((ISetLogicalParent)_popupRoot).SetParent(null);
_popupRoot.Dispose();
_popupRoot = null;
}
}
