1 files changed, 83 insertions, 0 deletions
diff --git a/source/ShiftUI/Design/ScrollableControlDesigner.cs b/source/ShiftUI/Design/ScrollableControlDesigner.cs
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+++ b/source/ShiftUI/Design/ScrollableControlDesigner.cs
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+//
+// ShiftUI.Design.ScrollableWidgetDesigner
+//
+// Authors:
+//	  Ivan N. Zlatev (contact i-nZ.net)
+//
+// (C) 2006-2007 Ivan N. Zlatev
+
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+
+
+using System;
+using System.ComponentModel;
+using System.ComponentModel.Design;
+using ShiftUI;
+using System.Drawing;
+using System.Drawing.Design;
+using System.Collections;
+
+
+
+namespace ShiftUI.Design
+{
+
+	public class ScrollableWidgetDesigner : ParentWidgetDesigner
+	{
+
+		public ScrollableWidgetDesigner ()
+		{
+		}
+
+		private const int HTHSCROLL = 6;
+		private const int HTVSCROLL = 7;
+
+		protected override bool GetHitTest (Point point)
+		{
+			if (base.GetHitTest (point)) {
+				return true;
+			}
+
+			// Check if the user has clicked on the scroll bars and forward the message to
+			// the ScrollableWidget. (Don't filter out the scrolling.). Keep in mind that scrollbars
+			// will be shown only if ScrollableWidget.AutoScroll = true
+			//
+			if (this.Widget is ScrollableWidget && ((ScrollableWidget)Widget).AutoScroll) {
+				int hitTestResult = (int) Native.SendMessage (this.Widget.Handle,
+																	 Native.Msg.WM_NCHITTEST,
+																	 IntPtr.Zero,
+																	(IntPtr) Native.LParam (point.X, point.Y));
+				if (hitTestResult == HTHSCROLL || hitTestResult == HTVSCROLL)
+					return true;
+			}
+			return false;
+		}
+
+
+		protected override void WndProc (ref Message m)
+		{
+			base.WndProc (ref m);
+			if (m.Msg == (int)Native.Msg.WM_HSCROLL || m.Msg == (int)Native.Msg.WM_VSCROLL)
+				this.DefWndProc (ref m);
+		}
+	}
+}