/// <summary>
/// ドラッグ終了
/// </summary>
private void ConnectorItem_DragCompleted(object sender, ConnectorItemDragCompletedEventArgs e)
{
var ctrl = e.OriginalSource as ConnectorControl;
if (ctrl == null || draggingLinkModel_ == null)
{
return;
}
// ドラッグオーバーチェック
Point mousePoint = Mouse.GetPosition(PART_Canvas_);
ConnectorControl connectorDraggedOver = null;
bool isHit = CheckConnectorControlDraggedOver(mousePoint, out connectorDraggedOver);
// イベント起動
var position = Mouse.GetPosition(ctrl.ParentEditControl);
RaiseEvent(new ConnectionDragCompletedEventArgs(ConnectionDragCompletedEvent, this,
ctrl.ParentNodeControl.DataContext,
draggingLinkModel_,
ctrl.DataContext,
isHit ? connectorDraggedOver.DataContext : null,
position));
draggingLinkModel_ = null;
}
/// <summary>
///
/// </summary>
private bool CheckConnectorControlDraggedOver(Point hitPoint, out ConnectorControl connectorDraggedOver)
{
connectorDraggedOver = null;
// ヒットチェック
HitTestResult result = null;
VisualTreeHelper.HitTest(PART_NodeList_, null, (hitTestResult) => {
result = hitTestResult;
return(HitTestResultBehavior.Stop);
},
new PointHitTestParameters(hitPoint));
if (result == null || result.VisualHit == null)
{
// Hit test failed.
return(false);
}
// ヒットしたものがConnectorの子か調べる
var hitItem = result.VisualHit as FrameworkElement;
if (hitItem == null)
{
return(false);
}
var connector = FindVisualParentWithType <ConnectorControl>(hitItem);
if (connector == null)
{
return(false);
}
connectorDraggedOver = connector;
return(true);
}
