DotNet 4.8.1 build of DotNetBar

PROMS/DotNetBar Source Code/TreeGX/ImageIndexEditor.cs

@@ -0,0 +1,75 @@
+using System;
+using System.ComponentModel.Design;
+using System.Drawing.Design;
+using System.ComponentModel;
+using System.Windows.Forms.ComponentModel;
+using System.Windows.Forms.Design;
+
+namespace DevComponents.Tree
+{
+	/// <summary>
+	/// Represents the class used by windows forms editor for picking an image from image list.
+	/// </summary>
+	public class ImageIndexEditor:UITypeEditor
+	{
+		private ImageEditor m_ImageEditor;
+		private System.Windows.Forms.ImageList m_ImageList=null;
+		public ImageIndexEditor():base()
+		{
+			m_ImageEditor=System.ComponentModel.TypeDescriptor.GetEditor(typeof(System.Drawing.Image),typeof(UITypeEditor)) as ImageEditor;
+		}
+		
+		public override bool GetPaintValueSupported(ITypeDescriptorContext context)
+		{
+			return true;
+		}
+
+		public override void PaintValue(PaintValueEventArgs e)
+		{
+			try
+			{
+				if(e==null || e.Value==null)
+					return;
+				int iIndex=(int)e.Value;
+				System.Drawing.Image img=this.GetImage(e.Context,iIndex);
+				if(img==null)
+					return;
+				PaintValueEventArgs pi=new PaintValueEventArgs(e.Context,img,e.Graphics,e.Bounds);
+				m_ImageEditor.PaintValue(pi);
+				//m_ImageEditor.PaintValue(img,e.Graphics,e.Bounds);
+			}
+			catch{}
+		}
+
+		private System.Drawing.Image GetImage(System.ComponentModel.ITypeDescriptorContext context,int index)
+		{
+			if(m_ImageList!=null && index>=0 && index<=m_ImageList.Images.Count)
+			{
+				return m_ImageList.Images[index];
+			}
+			if(context==null)
+				return null;
+
+			object o=context.Instance;
+			if(o==null)
+				return null;
+			System.ComponentModel.PropertyDescriptorCollection pd=System.ComponentModel.TypeDescriptor.GetProperties(o);
+			if(pd==null)
+				return null;
+
+			foreach(System.ComponentModel.PropertyDescriptor prop in pd)
+			{
+				if(prop.PropertyType==typeof(System.Windows.Forms.ImageList))
+				{
+					m_ImageList=prop.GetValue(o) as System.Windows.Forms.ImageList;
+					if(m_ImageList!=null && index>=0 && index<=m_ImageList.Images.Count)
+					{
+						return m_ImageList.Images[index];
+					}
+					break;
+				}
+			}
+			return null;
+		}
+	}
+}