/// <summary>
/// Called before the <see cref="InputElement.GotFocus"/> event occurs.
/// </summary>
/// <param name="e">The event args.</param>
protected override void OnGotFocus(GotFocusEventArgs e)
{
base.OnGotFocus(e);
if (IsFocused &&
(e.NavigationMethod == NavigationMethod.Tab ||
e.NavigationMethod == NavigationMethod.Directional))
{
var adornerLayer = AdornerLayer.GetAdornerLayer(this);
if (adornerLayer != null)
{
if (_focusAdorner == null)
{
var template = GetValue(FocusAdornerProperty);
if (template != null)
{
_focusAdorner = template.Build();
}
}
if (_focusAdorner != null)
{
var target = (Visual)GetTemplateFocusTarget();
if (target != null)
{
AdornerLayer.SetAdornedElement((Visual)_focusAdorner, target);
adornerLayer.Children.Add(_focusAdorner);
}
}
}
}
}
protected void AddAdorner(object sender, PointerEventArgs e)
{
var node = (TreeNode)((Control)sender).DataContext;
var visual = (Visual)node.Visual;
_currentLayer = AdornerLayer.GetAdornerLayer(visual);
if (_currentLayer == null ||
_currentLayer.Children.Contains(_adorner))
{
return;
}
_currentLayer.Children.Add(_adorner);
AdornerLayer.SetAdornedElement(_adorner, visual);
var vm = (TreePageViewModel)DataContext;
if (vm.MainView.ShouldVisualizeMarginPadding)
{
var paddingBorder = (Border)_adorner.Children[0];
paddingBorder.BorderThickness = visual.GetValue(PaddingProperty);
var contentBorder = (Border)_adorner.Children[1];
contentBorder.Margin = visual.GetValue(PaddingProperty);
var marginBorder = (Border)_adorner.Children[2];
marginBorder.BorderThickness = visual.GetValue(MarginProperty);
marginBorder.Margin = InvertThickness(visual.GetValue(MarginProperty));
}
}
protected bool AttachAsAdorner(Visual parent, Rect position, T element)
{
Debug.Assert(element != null);
this.parent = parent;
adornerLayer = AdornerLayer.GetAdornerLayer(parent);
if (adornerLayer == null)
{
Despawn(false);
return(false);
}
adornerLayer.Children.Add(element);
AdornerLayer.SetAdornedElement(element, parent);
AdornerLayer.SetIsClipEnabled(element, false);
this.element = element;
element.Width = position.Width;
element.Height = position.Height;
element.HorizontalAlignment = HorizontalAlignment.Left;
element.VerticalAlignment = VerticalAlignment.Top;
element.Margin = new Thickness(position.X, position.Y, 0, 0);
if (parent.GetVisualRoot() is TopLevel toplevel)
{
clickDisposable = toplevel.AddDisposableHandler(InputElement.PointerPressedEvent, (s, ev) =>
{
bool hitTextbox = false;
ILogical?logical = ev.Source as ILogical;
while (logical != null)
{
if (ReferenceEquals(logical, element))
{
hitTextbox = true;
break;
}
logical = logical.LogicalParent;
}
if (!hitTextbox)
{
Despawn(true);
}
}, RoutingStrategies.Tunnel);
}
IsOpened = true;
return(true);
}
private void Attach(Control control)
{
var bx = ShadowDecorator.GetShadow(control);
var cr = ShadowDecorator.GetShadowCornerRadius(control);
var br = new Border {
BoxShadow = bx, CornerRadius = cr
}; // Width = control.Width - 20, Height = control.DesiredSize.Height - 20
var adornerLayer = AdornerLayer.GetAdornerLayer(control);
//if(adornerLayer != null)
//{
ShadowDecorator.SetCurrent(control, br);
AdornerLayer.SetAdornedElement(br, control);
adornerLayer.Children.Add(br);
br.PropertyChanged += (s, e) => { br.Clip = null; };
Debug.WriteLine("attached");
//};
//}
}
