diff -r 8b4e6bd0aa92 -r fc0e7d80494f controls/DebugVariablePanel/GraphButton.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/controls/DebugVariablePanel/GraphButton.py	Thu May 30 13:23:21 2013 +0200
@@ -0,0 +1,155 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+#This file is part of PLCOpenEditor, a library implementing an IEC 61131-3 editor
+#based on the plcopen standard. 
+#
+#Copyright (C) 2012: Edouard TISSERANT and Laurent BESSARD
+#
+#See COPYING file for copyrights details.
+#
+#This library is free software; you can redistribute it and/or
+#modify it under the terms of the GNU General Public
+#License as published by the Free Software Foundation; either
+#version 2.1 of the License, or (at your option) any later version.
+#
+#This library is distributed in the hope that it will be useful,
+#but WITHOUT ANY WARRANTY; without even the implied warranty of
+#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+#General Public License for more details.
+#
+#You should have received a copy of the GNU General Public
+#License along with this library; if not, write to the Free Software
+#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+import wx
+
+from util.BitmapLibrary import GetBitmap
+
+#-------------------------------------------------------------------------------
+#                        Custom button for Graphic Viewer Class
+#-------------------------------------------------------------------------------
+
+"""
+Class that implements a custom button for graphic Viewer
+"""
+
+class GraphButton():
+    
+    def __init__(self, x, y, bitmap, callback):
+        """
+        Constructor
+        @param x: X coordinate of Button in Graphic Viewer
+        @param y: Y coordinate of Button in Graphic Viewer
+        @param bitmap: Name of bitmap to use for button
+        @param callback: Reference to function to call when button is pressed
+        """
+        # Save button position
+        self.SetPosition(x, y)
+        # Get wx.Bitmap object corresponding to bitmap
+        self.Bitmap = GetBitmap(bitmap)
+        
+        # By default button is shown and enabled
+        self.Shown = True
+        self.Enabled = True
+        
+        # Save reference to callback function
+        self.Callback = callback
+    
+    def __del__(self):
+        """
+        Destructor
+        """
+        # Remove reference to callback function
+        self.callback = None
+    
+    def GetSize(self):
+        """
+        Return size of button
+        @return: wx.Size object containing button size
+        """
+        # Button size is size of bitmap
+        return self.Bitmap.GetSize()
+    
+    def SetPosition(self, x, y):
+        """
+        Set button position
+        @param x: X coordinate of Button in Graphic Viewer
+        @param y: Y coordinate of Button in Graphic Viewer
+        """
+        self.Position = wx.Point(x, y)
+    
+    def Show(self, show=True):
+        """
+        Mark if button to be displayed in Graphic Viewer
+        @param show: True if button to be displayed in Graphic Viewer
+        (default True)
+        """
+        self.Shown = show
+        
+    def Hide(self):
+        """
+        Hide button from Graphic Viewer
+        """
+        self.Show(False)
+    
+    def IsShown(self):
+        """
+        Return if button is displayed in Graphic Viewer
+        @return: True if button is displayed in Graphic Viewer
+        """
+        return self.Shown
+    
+    def Enable(self, enable=True):
+        """
+        Mark if button is active in Graphic Viewer
+        @param enable: True if button is active in Graphic Viewer
+        (default True)
+        """
+        self.Enabled = True
+    
+    def Disable(self):
+        """
+        Deactivate button in Graphic Viewer
+        """
+        self.Enabled = False
+    
+    def IsEnabled(self):
+        """
+        Return if button is active in Graphic Viewer
+        @return: True if button is active in Graphic Viewer
+        """
+        return self.Enabled
+    
+    def HitTest(self, x, y):
+        """
+        Test if point is inside button
+        @param x: X coordinate of point
+        @param y: Y coordinate of point
+        @return: True if button is active and displayed and point is inside
+        button 
+        """
+        # Return immediately if button is hidden or inactive
+        if not (self.IsShown() and self.IsEnabled()):
+            return False
+        
+        # Test if point is inside button
+        w, h = self.Bitmap.GetSize()
+        rect = wx.Rect(self.Position.x, self.Position.y, w, h)
+        return rect.InsideXY(x, y)
+    
+    def ProcessCallback(self):
+        """
+        Call callback function if defined
+        """
+        if self.Callback is not None:
+            wx.CallAfter(self.Callback)
+    
+    def Draw(self, dc):
+        """
+        Draw button in Graphic Viewer
+        @param dc: wx.DC object corresponding to Graphic Viewer device context
+        """
+        # Only draw button if button is active and displayed
+        if self.Shown and self.Enabled:
+            dc.DrawBitmap(self.Bitmap, self.Position.x, self.Position.y, True)