diff -r 1460273f40ed -r 5743cbdff669 util/BitmapLibrary.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/util/BitmapLibrary.py	Fri Sep 07 16:45:55 2012 +0200
@@ -0,0 +1,85 @@
+#!/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 os
+
+import wx
+
+#-------------------------------------------------------------------------------
+#                            Library Structures
+#-------------------------------------------------------------------------------
+
+BitmapLibrary = {}
+BitmapFolders = []
+
+#-------------------------------------------------------------------------------
+#                             Library Helpers
+#-------------------------------------------------------------------------------
+
+def AddBitmapFolder(path):
+    if path not in BitmapFolders:
+        BitmapFolders.append(path)
+
+def SearchBitmap(bmp_name):
+    for folder in BitmapFolders:
+        bmp_path = os.path.join(folder, bmp_name + ".png")
+        if os.path.isfile(bmp_path):
+            return wx.Bitmap(bmp_path)
+    return None
+    
+def GetBitmap(bmp_name1, bmp_name2=None, size=None):
+    bmp = BitmapLibrary.get((bmp_name1, bmp_name2, size))
+    if bmp is not None:
+        return bmp
+    
+    if bmp_name2 is None:
+        bmp = SearchBitmap(bmp_name1)
+    else:
+        # Bitmap with two icon
+        bmp1 = SearchBitmap(bmp_name1)
+        bmp2 = SearchBitmap(bmp_name2)
+        
+        if bmp1 is not None and bmp2 is not None:
+            # Calculate bitmap size
+            width = bmp1.GetWidth() + bmp2.GetWidth() - 1
+            height = max(bmp1.GetHeight(), bmp2.GetHeight())
+            
+            # Create bitmap with both icons
+            bmp = wx.EmptyBitmap(width, height)
+            dc = wx.MemoryDC()
+            dc.SelectObject(bmp)
+            dc.Clear()
+            dc.DrawBitmap(bmp1, 0, 0)
+            dc.DrawBitmap(bmp2, bmp1.GetWidth() - 1, 0)
+            dc.Destroy()
+        
+        elif bmp1 is not None:
+            bmp = bmp1
+        elif bmp2 is not None:
+            bmp = bmp2
+    
+    if bmp is not None:
+        BitmapLibrary[(bmp_name1, bmp_name2, size)] = bmp
+        
+    return bmp