DotNet 4.8.1 build of DotNetBar

PROMS/DotNetBar Source Code/AdvTree/Display/NodeExpandRectDisplay.cs

@@ -0,0 +1,56 @@
+using System;
+using System.Drawing;
+
+namespace DevComponents.AdvTree.Display
+{
+	/// <summary>
+	/// Represents class that paints rectangular expand button.
+	/// </summary>
+	public class NodeExpandRectDisplay:NodeExpandDisplay
+	{
+		/// <summary>
+		/// Draw rectangular type expand button.
+		/// </summary>
+		/// <param name="e">Expand button context information.</param>
+		public override void DrawExpandButton(NodeExpandPartRendererEventArgs e)
+		{
+			if(e.ExpandPartBounds.IsEmpty)
+				return;
+
+			Brush brush=GetBackgroundBrush(e);
+			if(brush!=null)
+			{
+				e.Graphics.FillRectangle(brush,e.ExpandPartBounds);
+				brush.Dispose();
+			}
+
+            Pen pen = GetBorderPen(e);
+            if (pen != null)
+            {
+                e.Graphics.DrawRectangle(pen, e.ExpandPartBounds);
+                pen.Dispose();
+                pen = null;
+            }
+
+			if(e.Node.Expanded)
+			{
+                pen = GetExpandPen(e);
+                if (pen != null)
+                {
+                    e.Graphics.DrawLine(pen, e.ExpandPartBounds.X + 2, e.ExpandPartBounds.Y + e.ExpandPartBounds.Height / 2, e.ExpandPartBounds.Right - 2, e.ExpandPartBounds.Y + e.ExpandPartBounds.Height / 2);
+                    pen.Dispose();
+                }
+			}
+			else
+			{
+                pen = GetExpandPen(e);
+                if (pen != null)
+				{
+					e.Graphics.DrawLine(pen,e.ExpandPartBounds.X+2,e.ExpandPartBounds.Y+e.ExpandPartBounds.Height/2,e.ExpandPartBounds.Right-2,e.ExpandPartBounds.Y+e.ExpandPartBounds.Height/2);
+					e.Graphics.DrawLine(pen,e.ExpandPartBounds.X+e.ExpandPartBounds.Width/2,e.ExpandPartBounds.Y+2,e.ExpandPartBounds.X+e.ExpandPartBounds.Width/2,e.ExpandPartBounds.Bottom-2);
+                    pen.Dispose();
+				}
+			}
+		}
+	}
+}