public ConnectorAdorner(MyCanvas designer, Connector sourceConnector)
: base(designer)
{
this.designerCanvas = designer;
this.sourceConnector = sourceConnector;
drawingPen = new Pen(Brushes.LightSlateGray, 1);
drawingPen.LineJoin = PenLineJoin.Round;
this.Cursor = Cursors.Cross;
}
public Connection(Connector source, Connector sink, string strContent , List<string> m_Connection)
{
Source = source;
Sink = sink;
Brach = m_Connection;
SelectedBrach = strContent;
base.Loaded += new RoutedEventHandler(Connection_Loaded);
base.Unloaded += new RoutedEventHandler(Connection_Unloaded);
}
/// <summary>
/// 测试是否已经命中元素
/// </summary>
/// <param name="hitPoint">鼠标点击的坐标</param>
private void HitTesting(Point hitPoint)
{
bool hitConnectorFlag = false;
DependencyObject hitObject = designerCanvas.InputHitTest(hitPoint) as DependencyObject;
while (hitObject != null &&
hitObject != sourceConnector.ParentDesignerItem &&
hitObject.GetType() != typeof(MyCanvas))
{
if (hitObject is Connector)
{
HitConnector = hitObject as Connector;
hitConnectorFlag = true;
}
if (hitObject is DesignerItem)
{
HitDesignerItem = hitObject as DesignerItem;
var parentitem = hitDesignerItem.FindVisualTreeAncestor(x => x is Connector);
Control connectorDecorator = HitDesignerItem.Template.FindName("PART_ConnectorDecorator", HitDesignerItem) as Control;
List<DependencyObject> item = connectorDecorator.FindVisualTreeChildren(x => x is Connector);
foreach (var connector in item)
{
var data = connector as Connector;
if (Math.Abs(data.Position.X - hitPoint.X) < 18 && Math.Abs(data.Position.Y - hitPoint.Y) < 18)
{
hitConnector = data;
hitConnectorFlag = true;
break;
}
}
if (!hitConnectorFlag)
{
HitConnector = null;
}
return;
}
hitObject = VisualTreeHelper.GetParent(hitObject);
}
HitConnector = null;
HitDesignerItem = null;
}
/// <summary>
/// 拖拽开始
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void thumbDragThumb_DragStarted(object sender, DragStartedEventArgs e)
{
this.HitDesignerItem = null;
this.HitConnector = null;
this.pathGeometry = null;
this.Cursor = Cursors.Cross;
this.connection.StrokeDashArray = new DoubleCollection(new double[] { 1, 2 });
if (sender == sourceDragThumb)
{
fixConnector = connection.Sink;
dragConnector = connection.Source;
}
else if (sender == sinkDragThumb)
{
dragConnector = connection.Sink;
fixConnector = connection.Source;
}
}
