/// <summary>
/// PreviewMouseLeftButtonUp イベントハンドラ
/// </summary>
/// <param name="sender">イベント発行元</param>
/// <param name="e">イベント引数</param>
static void element_PreviewMouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
if (_adorner != null)
{
_adorner.AdornedElement.ReleaseMouseCapture();
_adorner.Detach();
_adorner = null;
}
}
/// <summary>
/// PreviewMouseLeftButtonDown イベントハンドラ
/// </summary>
/// <param name="sender">イベント発行元</param>
/// <param name="e">イベント引数</param>
static void element_PreviewMouseLeftButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
var originalElement = e.OriginalSource as FrameworkElement;
var parent = originalElement != null?FindAncestor <Panel>(originalElement) : null;
var adornedElement = sender as FrameworkElement;
if ((parent == null) || (adornedElement == null))
{
return;
}
var pt = e.GetPosition(adornedElement);
var offset = new Point(-pt.X, -pt.Y);
_adorner = new GhostAdorner(parent, adornedElement, pt, offset);
adornedElement.CaptureMouse();
}