mcs/class/referencesource/System.Activities.Presentation/System.Activities.Presentation/System/Activities/Presentation/FreeFormEditing/ConnectorCreationAdorner.cs

   1 //----------------------------------------------------------------
   2 // Copyright (c) Microsoft Corporation.  All rights reserved.
   3 //----------------------------------------------------------------
   4 namespace System.Activities.Presentation.FreeFormEditing
   5 {
   6     using System.Activities.Presentation;
   7     using System.Collections.Generic;
   8     using System.Diagnostics;
   9     using System.Windows;
  10     using System.Windows.Documents;
  11     using System.Windows.Media;
  12     using System.Runtime;
  13
  14     sealed class ConnectorCreationAdorner : Adorner
  15     {
  16         List<Point> linkPoints;
  17         public ConnectorCreationAdorner(UIElement adornedElement, List<Point> linkPoints)
  18             : base(adornedElement)
  19         {
  20             Fx.Assert(adornedElement != null, "adornedElement is null");
  21             this.IsHitTestVisible = false;
  22             this.linkPoints = linkPoints;
  23         }
  24
  25         protected override void OnRender(DrawingContext drawingContext)
  26         {
  27             if (drawingContext != null)
  28             {
  29                 SolidColorBrush renderBrush = new SolidColorBrush(WorkflowDesignerColors.WorkflowViewElementSelectedBorderColor);
  30                 Pen renderPen = new Pen(renderBrush, FreeFormPanel.ConnectorEditorThickness);
  31                 for (int i = 0; i < linkPoints.Count - 1; i++)
  32                 {
  33                     drawingContext.DrawLine(renderPen, linkPoints[i], linkPoints[i + 1]);
  34                 }
  35             }
  36             base.OnRender(drawingContext);
  37         }
  38     }
  39 }