public static bool IsMouseOver(this FrameworkElement element)
{
var x = default(int);
var y = default(int);
MouseHelper.GetPosition(out x, out y);
DpiHelper.TransformPosition(ref x, ref y);
var window = element.FindAncestor <Window>();
var result = VisualTreeHelper.HitTest(window, window.PointFromScreen(new Point(x, y)));
if (result == null || result.VisualHit == null)
{
return(false);
}
if (element == result.VisualHit || element.IsAncestorOf(result.VisualHit))
{
return(true);
}
if (result.VisualHit is Adorner adorner)
{
//For some reason adorners return hit tests even when IsHitTestVisible = False.
//Looks like a bug to me.
if (element == adorner.AdornedElement)
{
return(true);
}
}
return(false);
}
protected virtual void ShowContextMenu()
{
if (this.ContextMenu == null)
{
return;
}
var window = this.FindAncestor <Window>();
if (Windows.ActiveWindow != window)
{
return;
}
var x = default(int);
var y = default(int);
MouseHelper.GetPosition(out x, out y);
DpiHelper.TransformPosition(ref x, ref y);
this.ContextMenu.DataContext = this.DataContext;
this.ContextMenu.Placement = PlacementMode.AbsolutePoint;
this.ContextMenu.HorizontalOffset = x;
this.ContextMenu.VerticalOffset = y;
this.ContextMenu.IsOpen = true;
var source = PresentationSource.FromVisual(this.ContextMenu) as HwndSource;
if (source != null && source.Handle != IntPtr.Zero)
{
SetForegroundWindow(source.Handle);
}
}
protected virtual void OnMouseRightButtonUp(object sender, EventArgs e)
{
var task = Windows.Invoke(() =>
{
var x = default(int);
var y = default(int);
MouseHelper.GetPosition(out x, out y);
DpiHelper.TransformPosition(ref x, ref y);
if (!object.ReferenceEquals(Menu.DataContext, this.Core))
{
Menu.DataContext = this.Core;
}
Menu.HorizontalOffset = x;
Menu.VerticalOffset = y;
Menu.IsOpen = true;
var source = PresentationSource.FromVisual(Menu) as HwndSource;
if (source != null && source.Handle != IntPtr.Zero)
{
SetForegroundWindow(source.Handle);
}
});
}
public static bool IsMouseOver(this FrameworkElement element)
{
var x = default(int);
var y = default(int);
MouseHelper.GetPosition(out x, out y);
DpiHelper.TransformPosition(ref x, ref y);
var window = element.FindAncestor <Window>();
var result = VisualTreeHelper.HitTest(window, window.PointFromScreen(new Point(x, y)));
if (result == null || result.VisualHit == null)
{
return(false);
}
return(element.IsAncestorOf(result.VisualHit));
}
