protected override void OnMouseUp(MouseButtonEventArgs e)
{
if (HitConnector != null)
{
Connector sourceConnector = this.sourceConnector;
Connector sinkConnector = this.HitConnector;
Connection newConnection = new Connection(sourceConnector, sinkConnector);
Canvas.SetZIndex(newConnection, designerCanvas.Children.Count);
this.designerCanvas.Children.Add(newConnection);
}
if (HitDesignerItem != null)
{
this.HitDesignerItem.IsDragConnectionOver = false;
}
if (this.IsMouseCaptured) this.ReleaseMouseCapture();
AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(this.designerCanvas);
if (adornerLayer != null)
{
adornerLayer.Remove(this);
}
}
void CreateConnection(DesignerItem newParent, DesignerItem designerItem)
{
var source = GetItemConnector(newParent, PARENT_CONNECTOR);
var sink = GetItemConnector(designerItem, CHILD_CONNECTOR);
var connection = new Connection(source, sink);
source.Connections.Add(connection);
DesignerCanvas.Children.Add(connection);
}
public void DrawChild(DesignerItem designerItem, DesignerItem childItem, List<DesignerItem> list)
{
if (designerItem == null) return;
DrawDesignerItem(childItem);/*创建子节点*/
childItem.UpdateLayout();
childItem.SetTemplate();
var top = Canvas.GetTop(designerItem) + designerItem.ActualHeight + list.Sum(x => x.ActualHeight);
list.Add(childItem);
var left = Canvas.GetLeft(designerItem) + GetOffset(designerItem);
Canvas.SetTop(childItem, top);
Canvas.SetLeft(childItem, left);
SavePosition(childItem);
childItem.UpdateLayout();
var source = GetItemConnector(designerItem, PARENT_CONNECTOR);
var sink = GetItemConnector(childItem, "Left");
if (source == null || sink == null) return;
#region 创建连线
var conn = new Connection(source, sink); /*创建连线*/
DesignerCanvas.Children.Add(conn); /*放到画布上*/
Panel.SetZIndex(conn, -10000);
#endregion
childItem.CanCollapsed = true;
childItem.UpdateExpander();
}
public void CreateHelperConnection(DesignerItem newParent, DesignerItem dragItem)
{
RemoveHelperConnection();
if (newParent == null) return;
var source = GetItemConnector(newParent, PARENT_CONNECTOR);
var sink = GetItemConnector(dragItem, CHILD_CONNECTOR);
var connection = new Connection(source, sink);
connection.toNewParent = true;
source.Connections.Add(connection);
DesignerCanvas.Children.Add(connection);
SetConnectionColor(connection, Brushes.Red);
BringToFront(connection);
}
/*设定连线颜色*/
void SetConnectionColor(Connection connection, Brush colorBrushes)
{
_diagramControl.UpdateLayout();
var path = connection.Template.FindName("PART_ConnectionPath", connection) as Path;
if (path != null)
{
path.Stroke = colorBrushes;
//path.StrokeThickness = 2;
}
}
void RemoveConnection(Connection connection)
{
if (connection.Source != null) connection.Source.Connections.Remove(connection);
if (connection.Sink != null) connection.Sink.Connections.Remove(connection);
connection.Source = null;
connection.Sink = null;
DesignerCanvas.Children.Remove(connection);
}