Remove old debug panels and viewers not using matplotlib
authorLaurent Bessard
Mon, 14 Oct 2013 10:49:04 +0200
changeset 1364 e9e17d3b2849
parent 1363 e87e0166d0a7
child 1365 debc97102b23
Remove old debug panels and viewers not using matplotlib
Beremiz.py
IDEFrame.py
ProjectController.py
controls/DebugVariablePanel/DebugVariableGraphicPanel.py
controls/DebugVariablePanel/DebugVariablePanel.py
controls/DebugVariablePanel/DebugVariableTablePanel.py
controls/DebugVariablePanel/__init__.py
controls/PouInstanceVariablesPanel.py
editors/GraphicViewer.py
--- a/Beremiz.py	Mon Oct 14 10:31:32 2013 +0200
+++ b/Beremiz.py	Mon Oct 14 10:49:04 2013 +0200
@@ -141,7 +141,6 @@
 from editors.EditorPanel import EditorPanel
 from editors.Viewer import Viewer
 from editors.TextViewer import TextViewer
-from editors.GraphicViewer import GraphicViewer
 from editors.ResourceEditor import ConfigurationEditor, ResourceEditor
 from editors.DataTypeEditor import DataTypeEditor
 from util.MiniTextControler import MiniTextControler
@@ -617,7 +616,6 @@
         if (isinstance(tab, EditorPanel) and 
             not isinstance(tab, (Viewer, 
                                  TextViewer, 
-                                 GraphicViewer, 
                                  ResourceEditor, 
                                  ConfigurationEditor, 
                                  DataTypeEditor))):
--- a/IDEFrame.py	Mon Oct 14 10:31:32 2013 +0200
+++ b/IDEFrame.py	Mon Oct 14 10:49:04 2013 +0200
@@ -6,19 +6,11 @@
 import wx, wx.grid
 import wx.aui
 
-try:
-    import matplotlib
-    matplotlib.use('WX')
-    USE_MPL = True
-except:
-    USE_MPL = False
-
 from editors.EditorPanel import EditorPanel
 from editors.SFCViewer import SFC_Viewer
 from editors.LDViewer import LD_Viewer
 from editors.TextViewer import TextViewer
 from editors.Viewer import Viewer, ZOOM_FACTORS
-from editors.GraphicViewer import GraphicViewer
 from editors.ResourceEditor import ConfigurationEditor, ResourceEditor
 from editors.DataTypeEditor import DataTypeEditor
 from PLCControler import *
@@ -27,8 +19,6 @@
 from dialogs import ProjectDialog, PouDialog, PouTransitionDialog, PouActionDialog, FindInPouDialog, SearchInProjectDialog
 from util.BitmapLibrary import GetBitmap
 
-PouInstanceVariablesPanel.USE_MPL = USE_MPL
-
 # Define PLCOpenEditor controls id
 [ID_PLCOPENEDITOR, ID_PLCOPENEDITORLEFTNOTEBOOK, 
  ID_PLCOPENEDITORBOTTOMNOTEBOOK, ID_PLCOPENEDITORRIGHTNOTEBOOK, 
@@ -1954,11 +1944,7 @@
         
         elif instance_category in ITEMS_VARIABLE:
             if self.Controler.IsNumType(instance_type, True):
-                if USE_MPL:
-                    self.AddDebugVariable(instance_path, True)
-                else:
-                    new_window = GraphicViewer(self.TabsOpened, self, self.Controler, instance_path)
-                    icon = GetBitmap("GRAPH")
+                self.AddDebugVariable(instance_path, True)
         
         else:
             bodytype = self.Controler.GetEditedElementBodyType(instance_type, True)
@@ -1998,10 +1984,6 @@
 
     def ResetGraphicViewers(self):
         if self.EnableDebug:
-            for i in xrange(self.TabsOpened.GetPageCount()):
-                editor = self.TabsOpened.GetPage(i)
-                if isinstance(editor, GraphicViewer):
-                    editor.ResetView()
             self.DebugVariablePanel.ResetGraphicsValues()
 
     def CloseObsoleteDebugTabs(self):
@@ -2010,12 +1992,10 @@
             idxs.reverse()
             for idx in idxs:
                 editor = self.TabsOpened.GetPage(idx)
-                if isinstance(editor, (Viewer, GraphicViewer)) and editor.IsDebugging():
+                if isinstance(editor, Viewer) and editor.IsDebugging():
                     instance_infos = self.Controler.GetInstanceInfos(editor.GetInstancePath(), self.EnableDebug)
                     if instance_infos is None:
                         self.TabsOpened.DeletePage(idx)
-                    elif isinstance(editor, GraphicViewer):
-                        editor.ResetView(True)
                     else:
                         editor.SubscribeAllDataConsumers()
                 elif editor.IsDebugging():
@@ -2076,7 +2056,7 @@
         menu = None
         if selected != -1:
             window = self.TabsOpened.GetPage(selected)
-            if isinstance(window, (Viewer, TextViewer, GraphicViewer)):
+            if isinstance(window, (Viewer, TextViewer)):
                 if not window.IsDebugging():
                     menu = self.Controler.GetEditedElementBodyType(window.GetTagName())
                 else:
--- a/ProjectController.py	Mon Oct 14 10:31:32 2013 +0200
+++ b/ProjectController.py	Mon Oct 14 10:49:04 2013 +0200
@@ -1268,8 +1268,7 @@
                     WeakKeyDictionary(), # Callables
                     [],                  # Data storage [(tick, data),...]
                     "Registered",        # Variable status
-                    None,
-                    buffer_list]                # Forced value
+                    None]                # Forced value
             self.IECdebug_datas[IECPath] = IECdebug_data
         
         IECdebug_data[0][callableobj]=(args, kwargs)
--- a/controls/DebugVariablePanel/DebugVariableGraphicPanel.py	Mon Oct 14 10:31:32 2013 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,958 +0,0 @@
-#!/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
-
-from types import TupleType
-import math
-import numpy
-
-import wx
-import wx.lib.buttons
-
-import matplotlib
-import matplotlib.pyplot
-from matplotlib.backends.backend_wxagg import _convert_agg_to_wx_bitmap
-
-from editors.DebugViewer import DebugViewer
-from util.BitmapLibrary import GetBitmap
-
-from DebugVariableItem import DebugVariableItem
-from DebugVariableTextViewer import DebugVariableTextViewer
-from DebugVariableGraphicViewer import *
-
-MILLISECOND = 1000000       # Number of nanosecond in a millisecond
-SECOND = 1000 * MILLISECOND # Number of nanosecond in a second
-MINUTE = 60 * SECOND        # Number of nanosecond in a minute
-HOUR = 60 * MINUTE          # Number of nanosecond in a hour
-DAY = 24 * HOUR             # Number of nanosecond in a day
-
-# List of values possible for graph range
-# Format is [(time_in_plain_text, value_in_nanosecond),...]
-RANGE_VALUES = \
-    [("%dms" % i, i * MILLISECOND) for i in (10, 20, 50, 100, 200, 500)] + \
-    [("%ds" % i, i * SECOND) for i in (1, 2, 5, 10, 20, 30)] + \
-    [("%dm" % i, i * MINUTE) for i in (1, 2, 5, 10, 20, 30)] + \
-    [("%dh" % i, i * HOUR) for i in (1, 2, 3, 6, 12, 24)]
-
-# Scrollbar increment in pixel
-SCROLLBAR_UNIT = 10
-
-def compute_mask(x, y):
-    return [(xp if xp == yp else "*")
-            for xp, yp in zip(x, y)]
-
-def NextTick(variables):
-    next_tick = None
-    for item, data in variables:
-        if len(data) == 0:
-            continue
-        
-        next_tick = (data[0][0]
-                     if next_tick is None
-                     else min(next_tick, data[0][0]))
-    
-    return next_tick
-
-#-------------------------------------------------------------------------------
-#                    Debug Variable Graphic Panel Drop Target
-#-------------------------------------------------------------------------------
-
-"""
-Class that implements a custom drop target class for Debug Variable Graphic
-Panel
-"""
-
-class DebugVariableDropTarget(wx.TextDropTarget):
-    
-    def __init__(self, window):
-        """
-        Constructor
-        @param window: Reference to the Debug Variable Panel
-        """
-        wx.TextDropTarget.__init__(self)
-        self.ParentWindow = window
-    
-    def __del__(self):
-        """
-        Destructor
-        """
-        # Remove reference to Debug Variable Panel
-        self.ParentWindow = None
-    
-    def OnDragOver(self, x, y, d):
-        """
-        Function called when mouse is dragged over Drop Target
-        @param x: X coordinate of mouse pointer
-        @param y: Y coordinate of mouse pointer
-        @param d: Suggested default for return value
-        """
-       # Signal Debug Variable Panel to refresh highlight giving mouse position
-        self.ParentWindow.RefreshHighlight(x, y)
-        return wx.TextDropTarget.OnDragOver(self, x, y, d)
-        
-    def OnDropText(self, x, y, data):
-        """
-        Function called when mouse is released in Drop Target
-        @param x: X coordinate of mouse pointer
-        @param y: Y coordinate of mouse pointer
-        @param data: Text associated to drag'n drop
-        """
-        # Signal Debug Variable Panel to reset highlight
-        self.ParentWindow.ResetHighlight()
-        
-        message = None
-        
-        # Check that data is valid regarding DebugVariablePanel
-        try:
-            values = eval(data)
-            if not isinstance(values, TupleType):
-                raise ValueError
-        except:
-            message = _("Invalid value \"%s\" for debug variable")%data
-            values = None
-            
-        # Display message if data is invalid
-        if message is not None:
-            wx.CallAfter(self.ShowMessage, message)
-        
-        # Data contain a reference to a variable to debug
-        elif values[1] == "debug":
-            
-            # Drag'n Drop is an internal is an internal move inside Debug
-            # Variable Panel 
-            if len(values) > 2 and values[2] == "move":
-                self.ParentWindow.MoveValue(values[0])
-            
-            # Drag'n Drop was initiated by another control of Beremiz
-            else:
-                self.ParentWindow.InsertValue(values[0], force=True)
-    
-    def OnLeave(self):
-        """
-        Function called when mouse is leave Drop Target
-        """
-        # Signal Debug Variable Panel to reset highlight
-        self.ParentWindow.ResetHighlight()
-        return wx.TextDropTarget.OnLeave(self)
-    
-    def ShowMessage(self, message):
-        """
-        Show error message in Error Dialog
-        @param message: Error message to display
-        """
-        dialog = wx.MessageDialog(self.ParentWindow, 
-                                  message, 
-                                  _("Error"), 
-                                  wx.OK|wx.ICON_ERROR)
-        dialog.ShowModal()
-        dialog.Destroy()
-
-
-#-------------------------------------------------------------------------------
-#                      Debug Variable Graphic Panel Class
-#-------------------------------------------------------------------------------
-
-"""
-Class that implements a Viewer that display variable values as a graphs
-"""
-
-class DebugVariableGraphicPanel(wx.Panel, DebugViewer):
-    
-    def __init__(self, parent, producer, window):
-        """
-        Constructor
-        @param parent: Reference to the parent wx.Window
-        @param producer: Object receiving debug value and dispatching them to
-        consumers
-        @param window: Reference to Beremiz frame
-        """
-        wx.Panel.__init__(self, parent, style=wx.SP_3D|wx.TAB_TRAVERSAL)
-        
-        # Save Reference to Beremiz frame
-        self.ParentWindow = window
-        
-        # Variable storing flag indicating that variable displayed in table
-        # received new value and then table need to be refreshed
-        self.HasNewData = False
-        
-        # Variable storing flag indicating that refresh has been forced, and
-        # that next time refresh is possible, it will be done even if no new
-        # data is available
-        self.Force = False
-        
-        self.SetBackgroundColour(wx.WHITE)
-        
-        main_sizer = wx.BoxSizer(wx.VERTICAL)
-        
-        self.Ticks = numpy.array([]) # List of tick received
-        self.StartTick = 0           # Tick starting range of data displayed
-        self.Fixed = False           # Flag that range of data is fixed
-        self.CursorTick = None       # Tick of cursor for displaying values
-        
-        self.DraggingAxesPanel = None
-        self.DraggingAxesBoundingBox = None
-        self.DraggingAxesMousePos = None
-        self.VetoScrollEvent = False
-        
-        self.VariableNameMask = []
-        
-        self.GraphicPanels = []
-        
-        graphics_button_sizer = wx.BoxSizer(wx.HORIZONTAL)
-        main_sizer.AddSizer(graphics_button_sizer, border=5, flag=wx.GROW|wx.ALL)
-        
-        range_label = wx.StaticText(self, label=_('Range:'))
-        graphics_button_sizer.AddWindow(range_label, flag=wx.ALIGN_CENTER_VERTICAL)
-        
-        self.CanvasRange = wx.ComboBox(self, style=wx.CB_READONLY)
-        self.Bind(wx.EVT_COMBOBOX, self.OnRangeChanged, self.CanvasRange)
-        graphics_button_sizer.AddWindow(self.CanvasRange, 1, 
-              border=5, flag=wx.LEFT|wx.ALIGN_CENTER_VERTICAL)
-        
-        self.CanvasRange.Clear()
-        default_range_idx = 0
-        for idx, (text, value) in enumerate(RANGE_VALUES):
-            self.CanvasRange.Append(text)
-            if text == "1s":
-                default_range_idx = idx
-        self.CanvasRange.SetSelection(default_range_idx)
-        
-        for name, bitmap, help in [
-            ("CurrentButton", "current", _("Go to current value")),
-            ("ExportGraphButton", "export_graph", _("Export graph values to clipboard"))]:
-            button = wx.lib.buttons.GenBitmapButton(self, 
-                  bitmap=GetBitmap(bitmap), 
-                  size=wx.Size(28, 28), style=wx.NO_BORDER)
-            button.SetToolTipString(help)
-            setattr(self, name, button)
-            self.Bind(wx.EVT_BUTTON, getattr(self, "On" + name), button)
-            graphics_button_sizer.AddWindow(button, border=5, flag=wx.LEFT)
-        
-        self.CanvasPosition = wx.ScrollBar(self, 
-              size=wx.Size(0, 16), style=wx.SB_HORIZONTAL)
-        self.CanvasPosition.Bind(wx.EVT_SCROLL_THUMBTRACK, 
-              self.OnPositionChanging, self.CanvasPosition)
-        self.CanvasPosition.Bind(wx.EVT_SCROLL_LINEUP, 
-              self.OnPositionChanging, self.CanvasPosition)
-        self.CanvasPosition.Bind(wx.EVT_SCROLL_LINEDOWN, 
-              self.OnPositionChanging, self.CanvasPosition)
-        self.CanvasPosition.Bind(wx.EVT_SCROLL_PAGEUP, 
-              self.OnPositionChanging, self.CanvasPosition)
-        self.CanvasPosition.Bind(wx.EVT_SCROLL_PAGEDOWN, 
-              self.OnPositionChanging, self.CanvasPosition)
-        main_sizer.AddWindow(self.CanvasPosition, border=5, flag=wx.GROW|wx.LEFT|wx.RIGHT|wx.BOTTOM)
-        
-        self.TickSizer = wx.BoxSizer(wx.HORIZONTAL)
-        main_sizer.AddSizer(self.TickSizer, border=5, flag=wx.ALL|wx.GROW)
-        
-        self.TickLabel = wx.StaticText(self)
-        self.TickSizer.AddWindow(self.TickLabel, border=5, flag=wx.RIGHT)
-        
-        self.MaskLabel = wx.TextCtrl(self, style=wx.TE_READONLY|wx.TE_CENTER|wx.NO_BORDER)
-        self.TickSizer.AddWindow(self.MaskLabel, 1, border=5, flag=wx.RIGHT|wx.GROW)
-        
-        self.TickTimeLabel = wx.StaticText(self)
-        self.TickSizer.AddWindow(self.TickTimeLabel)
-        
-        self.GraphicsWindow = wx.ScrolledWindow(self, style=wx.HSCROLL|wx.VSCROLL)
-        self.GraphicsWindow.SetBackgroundColour(wx.WHITE)
-        self.GraphicsWindow.SetDropTarget(DebugVariableDropTarget(self))
-        self.GraphicsWindow.Bind(wx.EVT_ERASE_BACKGROUND, self.OnGraphicsWindowEraseBackground)
-        self.GraphicsWindow.Bind(wx.EVT_PAINT, self.OnGraphicsWindowPaint)
-        self.GraphicsWindow.Bind(wx.EVT_SIZE, self.OnGraphicsWindowResize)
-        self.GraphicsWindow.Bind(wx.EVT_MOUSEWHEEL, self.OnGraphicsWindowMouseWheel)
-        
-        main_sizer.AddWindow(self.GraphicsWindow, 1, flag=wx.GROW)
-        
-        self.GraphicsSizer = wx.BoxSizer(wx.VERTICAL)
-        self.GraphicsWindow.SetSizer(self.GraphicsSizer)
-    
-        DebugViewer.__init__(self, producer, True)
-        
-        self.SetSizer(main_sizer)
-    
-    def SetTickTime(self, ticktime=0):
-        """
-        Set Ticktime for calculate data range according to time range selected
-        @param ticktime: Ticktime to apply to range (default: 0)
-        """
-        # Save ticktime
-        self.Ticktime = ticktime
-        
-        # Set ticktime to millisecond if undefined
-        if self.Ticktime == 0:
-            self.Ticktime = MILLISECOND
-        
-        # Calculate range to apply to data
-        self.CurrentRange = RANGE_VALUES[
-            self.CanvasRange.GetSelection()][1] / self.Ticktime
-    
-    def SetDataProducer(self, producer):
-        """
-        Set Data Producer
-        @param producer: Data Producer
-        """
-        DebugViewer.SetDataProducer(self, producer)
-        
-        # Set ticktime if data producer is available
-        if self.DataProducer is not None:
-            self.SetTickTime(self.DataProducer.GetTicktime())
-    
-    def RefreshNewData(self, *args, **kwargs):
-        """
-        Called to refresh Panel according to values received by variables
-        Can receive any parameters (not used here)
-        """
-        # Refresh graphs if new data is available or refresh is forced
-        if self.HasNewData or self.Force:
-            self.HasNewData = False
-            self.RefreshView()
-        
-        DebugViewer.RefreshNewData(self, *args, **kwargs)
-    
-    def NewDataAvailable(self, ticks, *args, **kwargs):
-        """
-        Called by DataProducer for each tick captured or by panel to refresh
-        graphs
-        @param tick: PLC tick captured
-        All other parameters are passed to refresh function 
-        """
-        # If tick given
-        if ticks is not None:
-            tick = ticks[-1]
-            
-            # Save tick as start tick for range if data is still empty
-            if len(self.Ticks) == 0:
-                self.StartTick = ticks[0]
-            
-            # Add tick to list of ticks received
-            self.Ticks = numpy.append(self.Ticks, ticks)
-            
-            # Update start tick for range if range follow ticks received
-            if not self.Fixed or tick < self.StartTick + self.CurrentRange:
-                self.StartTick = max(self.StartTick, tick - self.CurrentRange)
-            
-            # Force refresh if graph is fixed because range of data received
-            # is too small to fill data range selected
-            if self.Fixed and \
-               self.Ticks[-1] - self.Ticks[0] < self.CurrentRange:
-                self.Force = True
-            
-            self.HasNewData = False
-            self.RefreshView()
-            
-        else:
-            DebugViewer.NewDataAvailable(self, ticks, *args, **kwargs)
-    
-    def ForceRefresh(self):
-        """
-        Called to force refresh of graphs
-        """
-        self.Force = True
-        wx.CallAfter(self.NewDataAvailable, None, True)
-    
-    def SetCursorTick(self, cursor_tick):
-        """
-        Set Cursor for displaying values of items at a tick given
-        @param cursor_tick: Tick of cursor
-        """
-        # Save cursor tick
-        self.CursorTick = cursor_tick
-        self.Fixed = cursor_tick is not None
-        self.UpdateCursorTick() 
-    
-    def MoveCursorTick(self, move):
-        if self.CursorTick is not None:
-            cursor_tick = max(self.Ticks[0], 
-                          min(self.CursorTick + move, 
-                              self.Ticks[-1]))
-            cursor_tick_idx = numpy.argmin(numpy.abs(self.Ticks - cursor_tick))
-            if self.Ticks[cursor_tick_idx] == self.CursorTick:
-                cursor_tick_idx = max(0, 
-                                  min(cursor_tick_idx + abs(move) / move, 
-                                      len(self.Ticks) - 1))
-            self.CursorTick = self.Ticks[cursor_tick_idx]
-            self.StartTick = max(self.Ticks[
-                                numpy.argmin(numpy.abs(self.Ticks - 
-                                        self.CursorTick + self.CurrentRange))],
-                             min(self.StartTick, self.CursorTick))
-            self.RefreshCanvasPosition()
-            self.UpdateCursorTick() 
-            
-    def ResetCursorTick(self):
-        self.CursorTick = None
-        self.Fixed = False
-        self.UpdateCursorTick()
-    
-    def UpdateCursorTick(self):
-        for panel in self.GraphicPanels:
-            if isinstance(panel, DebugVariableGraphicViewer):
-                panel.SetCursorTick(self.CursorTick)
-        self.ForceRefresh()
-    
-    def StartDragNDrop(self, panel, item, x_mouse, y_mouse, x_mouse_start, y_mouse_start):
-        if len(panel.GetItems()) > 1:
-            self.DraggingAxesPanel = DebugVariableGraphicViewer(self.GraphicsWindow, self, [item], GRAPH_PARALLEL)
-            self.DraggingAxesPanel.SetCursorTick(self.CursorTick)
-            width, height = panel.GetSize()
-            self.DraggingAxesPanel.SetSize(wx.Size(width, height))
-            self.DraggingAxesPanel.ResetGraphics()
-            self.DraggingAxesPanel.SetPosition(wx.Point(0, -height))
-        else:
-            self.DraggingAxesPanel = panel
-        self.DraggingAxesBoundingBox = panel.GetAxesBoundingBox(parent_coordinate=True)
-        self.DraggingAxesMousePos = wx.Point(
-            x_mouse_start - self.DraggingAxesBoundingBox.x, 
-            y_mouse_start - self.DraggingAxesBoundingBox.y)
-        self.MoveDragNDrop(x_mouse, y_mouse)
-        
-    def MoveDragNDrop(self, x_mouse, y_mouse):
-        self.DraggingAxesBoundingBox.x = x_mouse - self.DraggingAxesMousePos.x
-        self.DraggingAxesBoundingBox.y = y_mouse - self.DraggingAxesMousePos.y
-        self.RefreshHighlight(x_mouse, y_mouse)
-    
-    def RefreshHighlight(self, x_mouse, y_mouse):
-        for idx, panel in enumerate(self.GraphicPanels):
-            x, y = panel.GetPosition()
-            width, height = panel.GetSize()
-            rect = wx.Rect(x, y, width, height)
-            if (rect.InsideXY(x_mouse, y_mouse) or 
-                idx == 0 and y_mouse < 0 or
-                idx == len(self.GraphicPanels) - 1 and y_mouse > panel.GetPosition()[1]):
-                panel.RefreshHighlight(x_mouse - x, y_mouse - y)
-            else:
-                panel.SetHighlight(HIGHLIGHT_NONE)
-        if wx.Platform == "__WXMSW__":
-            self.RefreshView()
-        else:
-            self.ForceRefresh()
-    
-    def ResetHighlight(self):
-        for panel in self.GraphicPanels:
-            panel.SetHighlight(HIGHLIGHT_NONE)
-        if wx.Platform == "__WXMSW__":
-            self.RefreshView()
-        else:
-            self.ForceRefresh()
-    
-    def IsDragging(self):
-        return self.DraggingAxesPanel is not None
-    
-    def GetDraggingAxesClippingRegion(self, panel):
-        x, y = panel.GetPosition()
-        width, height = panel.GetSize()
-        bbox = wx.Rect(x, y, width, height)
-        bbox = bbox.Intersect(self.DraggingAxesBoundingBox)
-        bbox.x -= x
-        bbox.y -= y
-        return bbox
-    
-    def GetDraggingAxesPosition(self, panel):
-        x, y = panel.GetPosition()
-        return wx.Point(self.DraggingAxesBoundingBox.x - x,
-                        self.DraggingAxesBoundingBox.y - y)
-    
-    def StopDragNDrop(self, variable, x_mouse, y_mouse):
-        if self.DraggingAxesPanel not in self.GraphicPanels:
-            self.DraggingAxesPanel.Destroy()
-        self.DraggingAxesPanel = None
-        self.DraggingAxesBoundingBox = None
-        self.DraggingAxesMousePos = None
-        for idx, panel in enumerate(self.GraphicPanels):
-            panel.SetHighlight(HIGHLIGHT_NONE)
-            xw, yw = panel.GetPosition()
-            width, height = panel.GetSize()
-            bbox = wx.Rect(xw, yw, width, height)
-            if bbox.InsideXY(x_mouse, y_mouse):
-                panel.ShowButtons(True)
-                merge_type = GRAPH_PARALLEL
-                if isinstance(panel, DebugVariableTextViewer) or panel.Is3DCanvas():
-                    if y_mouse > yw + height / 2:
-                        idx += 1
-                    wx.CallAfter(self.MoveValue, variable, idx, True)
-                else:
-                    rect = panel.GetAxesBoundingBox(True)
-                    if rect.InsideXY(x_mouse, y_mouse):
-                        merge_rect = wx.Rect(rect.x, rect.y, rect.width / 2., rect.height)
-                        if merge_rect.InsideXY(x_mouse, y_mouse):
-                            merge_type = GRAPH_ORTHOGONAL
-                        wx.CallAfter(self.MergeGraphs, variable, idx, merge_type, force=True)
-                    else:
-                        if y_mouse > yw + height / 2:
-                            idx += 1
-                        wx.CallAfter(self.MoveValue, variable, idx, True)
-                self.ForceRefresh()
-                return 
-        width, height = self.GraphicsWindow.GetVirtualSize()
-        rect = wx.Rect(0, 0, width, height)
-        if rect.InsideXY(x_mouse, y_mouse):
-            wx.CallAfter(self.MoveValue, variable, len(self.GraphicPanels), True)
-        self.ForceRefresh()
-    
-    def RefreshGraphicsSizer(self):
-        self.GraphicsSizer.Clear()
-        
-        for panel in self.GraphicPanels:
-            self.GraphicsSizer.AddWindow(panel, flag=wx.GROW)
-            
-        self.GraphicsSizer.Layout()
-        self.RefreshGraphicsWindowScrollbars()
-    
-    def RefreshView(self):
-        self.RefreshCanvasPosition()
-        
-        width, height = self.GraphicsWindow.GetVirtualSize()
-        bitmap = wx.EmptyBitmap(width, height)
-        dc = wx.BufferedDC(wx.ClientDC(self.GraphicsWindow), bitmap)
-        dc.Clear()
-        dc.BeginDrawing()
-        if self.DraggingAxesPanel is not None:
-            destBBox = self.DraggingAxesBoundingBox
-            srcBBox = self.DraggingAxesPanel.GetAxesBoundingBox()
-            
-            srcBmp = _convert_agg_to_wx_bitmap(self.DraggingAxesPanel.get_renderer(), None)
-            srcDC = wx.MemoryDC()
-            srcDC.SelectObject(srcBmp)
-                
-            dc.Blit(destBBox.x, destBBox.y, 
-                    int(destBBox.width), int(destBBox.height), 
-                    srcDC, srcBBox.x, srcBBox.y)
-        dc.EndDrawing()
-        
-        if not self.Fixed or self.Force:
-            self.Force = False
-            refresh_graphics = True
-        else:
-            refresh_graphics = False
-        
-        if self.DraggingAxesPanel is not None and self.DraggingAxesPanel not in self.GraphicPanels:
-            self.DraggingAxesPanel.RefreshViewer(refresh_graphics)
-        for panel in self.GraphicPanels:
-            if isinstance(panel, DebugVariableGraphicViewer):
-                panel.RefreshViewer(refresh_graphics)
-            else:
-                panel.RefreshViewer()
-        
-        if self.CursorTick is not None:
-            tick = self.CursorTick
-        elif len(self.Ticks) > 0:
-            tick = self.Ticks[-1]
-        else:
-            tick = None
-        if tick is not None:
-            self.TickLabel.SetLabel("Tick: %d" % tick)
-            tick_duration = int(tick * self.Ticktime)
-            not_null = False
-            duration = ""
-            for value, format in [(tick_duration / DAY, "%dd"),
-                                  ((tick_duration % DAY) / HOUR, "%dh"),
-                                  ((tick_duration % HOUR) / MINUTE, "%dm"),
-                                  ((tick_duration % MINUTE) / SECOND, "%ds")]:
-                
-                if value > 0 or not_null:
-                    duration += format % value
-                    not_null = True
-            
-            duration += "%gms" % (float(tick_duration % SECOND) / MILLISECOND) 
-            self.TickTimeLabel.SetLabel("t: %s" % duration)
-        else:
-            self.TickLabel.SetLabel("")
-            self.TickTimeLabel.SetLabel("")
-        self.TickSizer.Layout()
-    
-    def SubscribeAllDataConsumers(self):
-        DebugViewer.SubscribeAllDataConsumers(self)
-        
-        if self.DataProducer is not None:
-            if self.DataProducer is not None:
-                self.SetTickTime(self.DataProducer.GetTicktime())
-        
-        self.ResetCursorTick()
-        
-        for panel in self.GraphicPanels[:]:
-            panel.SubscribeAllDataConsumers()
-            if panel.ItemsIsEmpty():
-                if panel.HasCapture():
-                    panel.ReleaseMouse()
-                self.GraphicPanels.remove(panel)
-                panel.Destroy()
-        
-        self.ResetVariableNameMask()
-        self.RefreshGraphicsSizer()
-        self.ForceRefresh()
-    
-    def ResetView(self):
-        self.UnsubscribeAllDataConsumers()
-        
-        self.Fixed = False
-        for panel in self.GraphicPanels:
-            panel.Destroy()
-        self.GraphicPanels = []
-        self.ResetVariableNameMask()
-        self.RefreshGraphicsSizer()
-    
-    def SetCanvasPosition(self, tick):
-        tick = max(self.Ticks[0], min(tick, self.Ticks[-1] - self.CurrentRange))
-        self.StartTick = self.Ticks[numpy.argmin(numpy.abs(self.Ticks - tick))]
-        self.Fixed = True
-        self.RefreshCanvasPosition()
-        self.ForceRefresh()
-    
-    def RefreshCanvasPosition(self):
-        if len(self.Ticks) > 0:
-            pos = int(self.StartTick - self.Ticks[0])
-            range = int(self.Ticks[-1] - self.Ticks[0])
-        else:
-            pos = 0
-            range = 0
-        self.CanvasPosition.SetScrollbar(pos, self.CurrentRange, range, self.CurrentRange)
-    
-    def ChangeRange(self, dir, tick=None):
-        current_range = self.CurrentRange
-        current_range_idx = self.CanvasRange.GetSelection()
-        new_range_idx = max(0, min(current_range_idx + dir, len(RANGE_VALUES) - 1))
-        if new_range_idx != current_range_idx:
-            self.CanvasRange.SetSelection(new_range_idx)
-            self.CurrentRange = RANGE_VALUES[new_range_idx][1] / self.Ticktime
-            if len(self.Ticks) > 0:
-                if tick is None:
-                    tick = self.StartTick + self.CurrentRange / 2.
-                new_start_tick = min(tick - (tick - self.StartTick) * self.CurrentRange / current_range,
-                                     self.Ticks[-1] - self.CurrentRange)
-                self.StartTick = self.Ticks[numpy.argmin(numpy.abs(self.Ticks - new_start_tick))]
-                self.Fixed = new_start_tick < self.Ticks[-1] - self.CurrentRange
-            self.ForceRefresh()
-    
-    def RefreshRange(self):
-        if len(self.Ticks) > 0:
-            if self.Fixed and self.Ticks[-1] - self.Ticks[0] < self.CurrentRange:
-                self.Fixed = False
-            if self.Fixed:
-                self.StartTick = min(self.StartTick, self.Ticks[-1] - self.CurrentRange)
-            else:
-                self.StartTick = max(self.Ticks[0], self.Ticks[-1] - self.CurrentRange)
-        self.ForceRefresh()
-    
-    def OnRangeChanged(self, event):
-        try:
-            self.CurrentRange = RANGE_VALUES[self.CanvasRange.GetSelection()][1] / self.Ticktime
-        except ValueError, e:
-            self.CanvasRange.SetValue(str(self.CurrentRange))
-        wx.CallAfter(self.RefreshRange)
-        event.Skip()
-    
-    def OnCurrentButton(self, event):
-        if len(self.Ticks) > 0:
-            self.StartTick = max(self.Ticks[0], self.Ticks[-1] - self.CurrentRange)
-            self.ResetCursorTick()
-        event.Skip()
-    
-    def CopyDataToClipboard(self, variables):
-        text = "tick;%s;\n" % ";".join([item.GetVariable() for item, data in variables])
-        next_tick = NextTick(variables)
-        while next_tick is not None:
-            values = []
-            for item, data in variables:
-                if len(data) > 0:
-                    if next_tick == data[0][0]:
-                        var_type = item.GetVariableType()
-                        if var_type in ["STRING", "WSTRING"]:
-                            value = item.GetRawValue(int(data.pop(0)[2]))
-                            if var_type == "STRING":
-                                values.append("'%s'" % value)
-                            else:
-                                values.append('"%s"' % value)
-                        else:
-                            values.append("%.3f" % data.pop(0)[1])
-                    else:
-                        values.append("")
-                else:
-                    values.append("")
-            text += "%d;%s;\n" % (next_tick, ";".join(values))
-            next_tick = NextTick(variables)
-        self.ParentWindow.SetCopyBuffer(text)
-    
-    def OnExportGraphButton(self, event):
-        items = reduce(lambda x, y: x + y,
-                       [panel.GetItems() for panel in self.GraphicPanels],
-                       [])
-        variables = [(item, [entry for entry in item.GetData()])
-                     for item in items
-                     if item.IsNumVariable()]
-        wx.CallAfter(self.CopyDataToClipboard, variables)
-        event.Skip()
-    
-    def OnPositionChanging(self, event):
-        if len(self.Ticks) > 0:
-            self.StartTick = self.Ticks[0] + event.GetPosition()
-            self.Fixed = True
-            self.ForceRefresh()
-        event.Skip()
-    
-    def GetRange(self):
-        return self.StartTick, self.StartTick + self.CurrentRange
-    
-    def GetViewerIndex(self, viewer):
-        if viewer in self.GraphicPanels:
-            return self.GraphicPanels.index(viewer)
-        return None
-    
-    def IsViewerFirst(self, viewer):
-        return viewer == self.GraphicPanels[0]
-    
-    def HighlightPreviousViewer(self, viewer):
-        if self.IsViewerFirst(viewer):
-            return
-        idx = self.GetViewerIndex(viewer)
-        if idx is None:
-            return
-        self.GraphicPanels[idx-1].SetHighlight(HIGHLIGHT_AFTER)
-    
-    def ResetVariableNameMask(self):
-        items = []
-        for panel in self.GraphicPanels:
-            items.extend(panel.GetItems())
-        if len(items) > 1:
-            self.VariableNameMask = reduce(compute_mask,
-                [item.GetVariable().split('.') for item in items])
-        elif len(items) > 0:
-            self.VariableNameMask = items[0].GetVariable().split('.')[:-1] + ['*']
-        else:
-            self.VariableNameMask = []
-        self.MaskLabel.ChangeValue(".".join(self.VariableNameMask))
-        self.MaskLabel.SetInsertionPoint(self.MaskLabel.GetLastPosition())
-            
-    def GetVariableNameMask(self):
-        return self.VariableNameMask
-    
-    def InsertValue(self, iec_path, idx = None, force=False, graph=False):
-        for panel in self.GraphicPanels:
-            if panel.GetItem(iec_path) is not None:
-                if graph and isinstance(panel, DebugVariableTextViewer):
-                    self.ToggleViewerType(panel)
-                return
-        if idx is None:
-            idx = len(self.GraphicPanels)
-        item = DebugVariableItem(self, iec_path, True)
-        result = self.AddDataConsumer(iec_path.upper(), item)
-        if result is not None or force:
-            
-            self.Freeze()
-            if item.IsNumVariable() and graph:
-                panel = DebugVariableGraphicViewer(self.GraphicsWindow, self, [item], GRAPH_PARALLEL)
-                if self.CursorTick is not None:
-                    panel.SetCursorTick(self.CursorTick)
-            else:
-                panel = DebugVariableTextViewer(self.GraphicsWindow, self, [item])
-            if idx is not None:
-                self.GraphicPanels.insert(idx, panel)
-            else:
-                self.GraphicPanels.append(panel)
-            self.ResetVariableNameMask()
-            self.RefreshGraphicsSizer()
-            self.Thaw()
-            self.ForceRefresh()
-    
-    def MoveValue(self, iec_path, idx = None, graph=False):
-        if idx is None:
-            idx = len(self.GraphicPanels)
-        source_panel = None
-        item = None
-        for panel in self.GraphicPanels:
-            item = panel.GetItem(iec_path)
-            if item is not None:
-                source_panel = panel
-                break
-        if source_panel is not None:
-            source_panel_idx = self.GraphicPanels.index(source_panel)
-            
-            if (len(source_panel.GetItems()) == 1):
-                
-                if source_panel_idx < idx:
-                    self.GraphicPanels.insert(idx, source_panel)
-                    self.GraphicPanels.pop(source_panel_idx)
-                elif source_panel_idx > idx:
-                    self.GraphicPanels.pop(source_panel_idx)
-                    self.GraphicPanels.insert(idx, source_panel)
-                else:
-                    return
-                
-            else:
-                source_panel.RemoveItem(item)
-                source_size = source_panel.GetSize()
-                if item.IsNumVariable() and graph:
-                    panel = DebugVariableGraphicViewer(self.GraphicsWindow, self, [item], GRAPH_PARALLEL)
-                    panel.SetCanvasHeight(source_size.height)
-                    if self.CursorTick is not None:
-                        panel.SetCursorTick(self.CursorTick)
-                
-                else:
-                    panel = DebugVariableTextViewer(self.GraphicsWindow, self, [item])
-                
-                self.GraphicPanels.insert(idx, panel)
-                
-                if source_panel.ItemsIsEmpty():
-                    if source_panel.HasCapture():
-                        source_panel.ReleaseMouse()
-                    source_panel.Destroy()
-                    self.GraphicPanels.remove(source_panel)
-                
-            self.ResetVariableNameMask()
-            self.RefreshGraphicsSizer()
-            self.ForceRefresh()
-    
-    def MergeGraphs(self, source, target_idx, merge_type, force=False):
-        source_item = None
-        source_panel = None
-        for panel in self.GraphicPanels:
-            source_item = panel.GetItem(source)
-            if source_item is not None:
-                source_panel = panel
-                break
-        if source_item is None:
-            item = DebugVariableItem(self, source, True)
-            if item.IsNumVariable():
-                result = self.AddDataConsumer(source.upper(), item)
-                if result is not None or force:
-                    source_item = item
-        if source_item is not None and source_item.IsNumVariable():
-            if source_panel is not None:
-                source_size = source_panel.GetSize()
-            else:
-                source_size = None
-            target_panel = self.GraphicPanels[target_idx]
-            graph_type = target_panel.GraphType
-            if target_panel != source_panel:
-                if (merge_type == GRAPH_PARALLEL and graph_type != merge_type or
-                    merge_type == GRAPH_ORTHOGONAL and 
-                    (graph_type == GRAPH_PARALLEL and len(target_panel.Items) > 1 or
-                     graph_type == GRAPH_ORTHOGONAL and len(target_panel.Items) >= 3)):
-                    return
-                
-                if source_panel is not None:
-                    source_panel.RemoveItem(source_item)
-                    if source_panel.ItemsIsEmpty():
-                        if source_panel.HasCapture():
-                            source_panel.ReleaseMouse()
-                        source_panel.Destroy()
-                        self.GraphicPanels.remove(source_panel)
-            elif (merge_type != graph_type and len(target_panel.Items) == 2):
-                target_panel.RemoveItem(source_item)
-            else:
-                target_panel = None
-                
-            if target_panel is not None:
-                target_panel.AddItem(source_item)
-                target_panel.GraphType = merge_type
-                size = target_panel.GetSize()
-                if merge_type == GRAPH_ORTHOGONAL:
-                    target_panel.SetCanvasHeight(size.width)
-                elif source_size is not None and source_panel != target_panel:
-                    target_panel.SetCanvasHeight(size.height + source_size.height)
-                else:
-                    target_panel.SetCanvasHeight(size.height)
-                target_panel.ResetGraphics()
-                
-                self.ResetVariableNameMask()
-                self.RefreshGraphicsSizer()
-                self.ForceRefresh()
-    
-    def DeleteValue(self, source_panel, item=None):
-        source_idx = self.GetViewerIndex(source_panel)
-        if source_idx is not None:
-            
-            if item is None:
-                source_panel.ClearItems()
-                source_panel.Destroy()
-                self.GraphicPanels.remove(source_panel)
-                self.ResetVariableNameMask()
-                self.RefreshGraphicsSizer()
-            else:
-                source_panel.RemoveItem(item)
-                if source_panel.ItemsIsEmpty():
-                    source_panel.Destroy()
-                    self.GraphicPanels.remove(source_panel)
-                    self.ResetVariableNameMask()
-                    self.RefreshGraphicsSizer()
-            if len(self.GraphicPanels) == 0:
-                self.Fixed = False
-                self.ResetCursorTick()
-            self.ForceRefresh()
-    
-    def ToggleViewerType(self, panel):
-        panel_idx = self.GetViewerIndex(panel)
-        if panel_idx is not None:
-            self.GraphicPanels.remove(panel)
-            items = panel.GetItems()
-            if isinstance(panel, DebugVariableGraphicViewer):
-                for idx, item in enumerate(items):
-                    new_panel = DebugVariableTextViewer(self.GraphicsWindow, self, [item])
-                    self.GraphicPanels.insert(panel_idx + idx, new_panel)
-            else:
-                new_panel = DebugVariableGraphicViewer(self.GraphicsWindow, self, items, GRAPH_PARALLEL)
-                self.GraphicPanels.insert(panel_idx, new_panel)
-            panel.Destroy()
-        self.RefreshGraphicsSizer()
-        self.ForceRefresh()
-    
-    def ResetGraphicsValues(self):
-        self.Ticks = numpy.array([])
-        self.StartTick = 0
-        for panel in self.GraphicPanels:
-            panel.ResetItemsData()
-        self.ResetCursorTick()
-
-    def RefreshGraphicsWindowScrollbars(self):
-        xstart, ystart = self.GraphicsWindow.GetViewStart()
-        window_size = self.GraphicsWindow.GetClientSize()
-        vwidth, vheight = self.GraphicsSizer.GetMinSize()
-        posx = max(0, min(xstart, (vwidth - window_size[0]) / SCROLLBAR_UNIT))
-        posy = max(0, min(ystart, (vheight - window_size[1]) / SCROLLBAR_UNIT))
-        self.GraphicsWindow.Scroll(posx, posy)
-        self.GraphicsWindow.SetScrollbars(SCROLLBAR_UNIT, SCROLLBAR_UNIT, 
-                vwidth / SCROLLBAR_UNIT, vheight / SCROLLBAR_UNIT, posx, posy)
-    
-    def OnGraphicsWindowEraseBackground(self, event):
-        pass
-    
-    def OnGraphicsWindowPaint(self, event):
-        self.RefreshView()
-        event.Skip()
-    
-    def OnGraphicsWindowResize(self, event):
-        size = self.GetSize()
-        for panel in self.GraphicPanels:
-            panel_size = panel.GetSize()
-            if (isinstance(panel, DebugVariableGraphicViewer) and 
-                panel.GraphType == GRAPH_ORTHOGONAL and 
-                panel_size.width == panel_size.height):
-                panel.SetCanvasHeight(size.width)
-        self.RefreshGraphicsWindowScrollbars()
-        self.GraphicsSizer.Layout()
-        event.Skip()
-
-    def OnGraphicsWindowMouseWheel(self, event):
-        if self.VetoScrollEvent:
-            self.VetoScrollEvent = False
-        else:
-            event.Skip()
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/controls/DebugVariablePanel/DebugVariablePanel.py	Mon Oct 14 10:49:04 2013 +0200
@@ -0,0 +1,958 @@
+#!/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
+
+from types import TupleType
+import math
+import numpy
+
+import wx
+import wx.lib.buttons
+
+import matplotlib
+import matplotlib.pyplot
+from matplotlib.backends.backend_wxagg import _convert_agg_to_wx_bitmap
+
+from editors.DebugViewer import DebugViewer
+from util.BitmapLibrary import GetBitmap
+
+from DebugVariableItem import DebugVariableItem
+from DebugVariableTextViewer import DebugVariableTextViewer
+from DebugVariableGraphicViewer import *
+
+MILLISECOND = 1000000       # Number of nanosecond in a millisecond
+SECOND = 1000 * MILLISECOND # Number of nanosecond in a second
+MINUTE = 60 * SECOND        # Number of nanosecond in a minute
+HOUR = 60 * MINUTE          # Number of nanosecond in a hour
+DAY = 24 * HOUR             # Number of nanosecond in a day
+
+# List of values possible for graph range
+# Format is [(time_in_plain_text, value_in_nanosecond),...]
+RANGE_VALUES = \
+    [("%dms" % i, i * MILLISECOND) for i in (10, 20, 50, 100, 200, 500)] + \
+    [("%ds" % i, i * SECOND) for i in (1, 2, 5, 10, 20, 30)] + \
+    [("%dm" % i, i * MINUTE) for i in (1, 2, 5, 10, 20, 30)] + \
+    [("%dh" % i, i * HOUR) for i in (1, 2, 3, 6, 12, 24)]
+
+# Scrollbar increment in pixel
+SCROLLBAR_UNIT = 10
+
+def compute_mask(x, y):
+    return [(xp if xp == yp else "*")
+            for xp, yp in zip(x, y)]
+
+def NextTick(variables):
+    next_tick = None
+    for item, data in variables:
+        if len(data) == 0:
+            continue
+        
+        next_tick = (data[0][0]
+                     if next_tick is None
+                     else min(next_tick, data[0][0]))
+    
+    return next_tick
+
+#-------------------------------------------------------------------------------
+#                    Debug Variable Graphic Panel Drop Target
+#-------------------------------------------------------------------------------
+
+"""
+Class that implements a custom drop target class for Debug Variable Graphic
+Panel
+"""
+
+class DebugVariableDropTarget(wx.TextDropTarget):
+    
+    def __init__(self, window):
+        """
+        Constructor
+        @param window: Reference to the Debug Variable Panel
+        """
+        wx.TextDropTarget.__init__(self)
+        self.ParentWindow = window
+    
+    def __del__(self):
+        """
+        Destructor
+        """
+        # Remove reference to Debug Variable Panel
+        self.ParentWindow = None
+    
+    def OnDragOver(self, x, y, d):
+        """
+        Function called when mouse is dragged over Drop Target
+        @param x: X coordinate of mouse pointer
+        @param y: Y coordinate of mouse pointer
+        @param d: Suggested default for return value
+        """
+       # Signal Debug Variable Panel to refresh highlight giving mouse position
+        self.ParentWindow.RefreshHighlight(x, y)
+        return wx.TextDropTarget.OnDragOver(self, x, y, d)
+        
+    def OnDropText(self, x, y, data):
+        """
+        Function called when mouse is released in Drop Target
+        @param x: X coordinate of mouse pointer
+        @param y: Y coordinate of mouse pointer
+        @param data: Text associated to drag'n drop
+        """
+        # Signal Debug Variable Panel to reset highlight
+        self.ParentWindow.ResetHighlight()
+        
+        message = None
+        
+        # Check that data is valid regarding DebugVariablePanel
+        try:
+            values = eval(data)
+            if not isinstance(values, TupleType):
+                raise ValueError
+        except:
+            message = _("Invalid value \"%s\" for debug variable")%data
+            values = None
+            
+        # Display message if data is invalid
+        if message is not None:
+            wx.CallAfter(self.ShowMessage, message)
+        
+        # Data contain a reference to a variable to debug
+        elif values[1] == "debug":
+            
+            # Drag'n Drop is an internal is an internal move inside Debug
+            # Variable Panel 
+            if len(values) > 2 and values[2] == "move":
+                self.ParentWindow.MoveValue(values[0])
+            
+            # Drag'n Drop was initiated by another control of Beremiz
+            else:
+                self.ParentWindow.InsertValue(values[0], force=True)
+    
+    def OnLeave(self):
+        """
+        Function called when mouse is leave Drop Target
+        """
+        # Signal Debug Variable Panel to reset highlight
+        self.ParentWindow.ResetHighlight()
+        return wx.TextDropTarget.OnLeave(self)
+    
+    def ShowMessage(self, message):
+        """
+        Show error message in Error Dialog
+        @param message: Error message to display
+        """
+        dialog = wx.MessageDialog(self.ParentWindow, 
+                                  message, 
+                                  _("Error"), 
+                                  wx.OK|wx.ICON_ERROR)
+        dialog.ShowModal()
+        dialog.Destroy()
+
+
+#-------------------------------------------------------------------------------
+#                      Debug Variable Graphic Panel Class
+#-------------------------------------------------------------------------------
+
+"""
+Class that implements a Viewer that display variable values as a graphs
+"""
+
+class DebugVariablePanel(wx.Panel, DebugViewer):
+    
+    def __init__(self, parent, producer, window):
+        """
+        Constructor
+        @param parent: Reference to the parent wx.Window
+        @param producer: Object receiving debug value and dispatching them to
+        consumers
+        @param window: Reference to Beremiz frame
+        """
+        wx.Panel.__init__(self, parent, style=wx.SP_3D|wx.TAB_TRAVERSAL)
+        
+        # Save Reference to Beremiz frame
+        self.ParentWindow = window
+        
+        # Variable storing flag indicating that variable displayed in table
+        # received new value and then table need to be refreshed
+        self.HasNewData = False
+        
+        # Variable storing flag indicating that refresh has been forced, and
+        # that next time refresh is possible, it will be done even if no new
+        # data is available
+        self.Force = False
+        
+        self.SetBackgroundColour(wx.WHITE)
+        
+        main_sizer = wx.BoxSizer(wx.VERTICAL)
+        
+        self.Ticks = numpy.array([]) # List of tick received
+        self.StartTick = 0           # Tick starting range of data displayed
+        self.Fixed = False           # Flag that range of data is fixed
+        self.CursorTick = None       # Tick of cursor for displaying values
+        
+        self.DraggingAxesPanel = None
+        self.DraggingAxesBoundingBox = None
+        self.DraggingAxesMousePos = None
+        self.VetoScrollEvent = False
+        
+        self.VariableNameMask = []
+        
+        self.GraphicPanels = []
+        
+        graphics_button_sizer = wx.BoxSizer(wx.HORIZONTAL)
+        main_sizer.AddSizer(graphics_button_sizer, border=5, flag=wx.GROW|wx.ALL)
+        
+        range_label = wx.StaticText(self, label=_('Range:'))
+        graphics_button_sizer.AddWindow(range_label, flag=wx.ALIGN_CENTER_VERTICAL)
+        
+        self.CanvasRange = wx.ComboBox(self, style=wx.CB_READONLY)
+        self.Bind(wx.EVT_COMBOBOX, self.OnRangeChanged, self.CanvasRange)
+        graphics_button_sizer.AddWindow(self.CanvasRange, 1, 
+              border=5, flag=wx.LEFT|wx.ALIGN_CENTER_VERTICAL)
+        
+        self.CanvasRange.Clear()
+        default_range_idx = 0
+        for idx, (text, value) in enumerate(RANGE_VALUES):
+            self.CanvasRange.Append(text)
+            if text == "1s":
+                default_range_idx = idx
+        self.CanvasRange.SetSelection(default_range_idx)
+        
+        for name, bitmap, help in [
+            ("CurrentButton", "current", _("Go to current value")),
+            ("ExportGraphButton", "export_graph", _("Export graph values to clipboard"))]:
+            button = wx.lib.buttons.GenBitmapButton(self, 
+                  bitmap=GetBitmap(bitmap), 
+                  size=wx.Size(28, 28), style=wx.NO_BORDER)
+            button.SetToolTipString(help)
+            setattr(self, name, button)
+            self.Bind(wx.EVT_BUTTON, getattr(self, "On" + name), button)
+            graphics_button_sizer.AddWindow(button, border=5, flag=wx.LEFT)
+        
+        self.CanvasPosition = wx.ScrollBar(self, 
+              size=wx.Size(0, 16), style=wx.SB_HORIZONTAL)
+        self.CanvasPosition.Bind(wx.EVT_SCROLL_THUMBTRACK, 
+              self.OnPositionChanging, self.CanvasPosition)
+        self.CanvasPosition.Bind(wx.EVT_SCROLL_LINEUP, 
+              self.OnPositionChanging, self.CanvasPosition)
+        self.CanvasPosition.Bind(wx.EVT_SCROLL_LINEDOWN, 
+              self.OnPositionChanging, self.CanvasPosition)
+        self.CanvasPosition.Bind(wx.EVT_SCROLL_PAGEUP, 
+              self.OnPositionChanging, self.CanvasPosition)
+        self.CanvasPosition.Bind(wx.EVT_SCROLL_PAGEDOWN, 
+              self.OnPositionChanging, self.CanvasPosition)
+        main_sizer.AddWindow(self.CanvasPosition, border=5, flag=wx.GROW|wx.LEFT|wx.RIGHT|wx.BOTTOM)
+        
+        self.TickSizer = wx.BoxSizer(wx.HORIZONTAL)
+        main_sizer.AddSizer(self.TickSizer, border=5, flag=wx.ALL|wx.GROW)
+        
+        self.TickLabel = wx.StaticText(self)
+        self.TickSizer.AddWindow(self.TickLabel, border=5, flag=wx.RIGHT)
+        
+        self.MaskLabel = wx.TextCtrl(self, style=wx.TE_READONLY|wx.TE_CENTER|wx.NO_BORDER)
+        self.TickSizer.AddWindow(self.MaskLabel, 1, border=5, flag=wx.RIGHT|wx.GROW)
+        
+        self.TickTimeLabel = wx.StaticText(self)
+        self.TickSizer.AddWindow(self.TickTimeLabel)
+        
+        self.GraphicsWindow = wx.ScrolledWindow(self, style=wx.HSCROLL|wx.VSCROLL)
+        self.GraphicsWindow.SetBackgroundColour(wx.WHITE)
+        self.GraphicsWindow.SetDropTarget(DebugVariableDropTarget(self))
+        self.GraphicsWindow.Bind(wx.EVT_ERASE_BACKGROUND, self.OnGraphicsWindowEraseBackground)
+        self.GraphicsWindow.Bind(wx.EVT_PAINT, self.OnGraphicsWindowPaint)
+        self.GraphicsWindow.Bind(wx.EVT_SIZE, self.OnGraphicsWindowResize)
+        self.GraphicsWindow.Bind(wx.EVT_MOUSEWHEEL, self.OnGraphicsWindowMouseWheel)
+        
+        main_sizer.AddWindow(self.GraphicsWindow, 1, flag=wx.GROW)
+        
+        self.GraphicsSizer = wx.BoxSizer(wx.VERTICAL)
+        self.GraphicsWindow.SetSizer(self.GraphicsSizer)
+    
+        DebugViewer.__init__(self, producer, True)
+        
+        self.SetSizer(main_sizer)
+    
+    def SetTickTime(self, ticktime=0):
+        """
+        Set Ticktime for calculate data range according to time range selected
+        @param ticktime: Ticktime to apply to range (default: 0)
+        """
+        # Save ticktime
+        self.Ticktime = ticktime
+        
+        # Set ticktime to millisecond if undefined
+        if self.Ticktime == 0:
+            self.Ticktime = MILLISECOND
+        
+        # Calculate range to apply to data
+        self.CurrentRange = RANGE_VALUES[
+            self.CanvasRange.GetSelection()][1] / self.Ticktime
+    
+    def SetDataProducer(self, producer):
+        """
+        Set Data Producer
+        @param producer: Data Producer
+        """
+        DebugViewer.SetDataProducer(self, producer)
+        
+        # Set ticktime if data producer is available
+        if self.DataProducer is not None:
+            self.SetTickTime(self.DataProducer.GetTicktime())
+    
+    def RefreshNewData(self, *args, **kwargs):
+        """
+        Called to refresh Panel according to values received by variables
+        Can receive any parameters (not used here)
+        """
+        # Refresh graphs if new data is available or refresh is forced
+        if self.HasNewData or self.Force:
+            self.HasNewData = False
+            self.RefreshView()
+        
+        DebugViewer.RefreshNewData(self, *args, **kwargs)
+    
+    def NewDataAvailable(self, ticks, *args, **kwargs):
+        """
+        Called by DataProducer for each tick captured or by panel to refresh
+        graphs
+        @param tick: PLC tick captured
+        All other parameters are passed to refresh function 
+        """
+        # If tick given
+        if ticks is not None:
+            tick = ticks[-1]
+            
+            # Save tick as start tick for range if data is still empty
+            if len(self.Ticks) == 0:
+                self.StartTick = ticks[0]
+            
+            # Add tick to list of ticks received
+            self.Ticks = numpy.append(self.Ticks, ticks)
+            
+            # Update start tick for range if range follow ticks received
+            if not self.Fixed or tick < self.StartTick + self.CurrentRange:
+                self.StartTick = max(self.StartTick, tick - self.CurrentRange)
+            
+            # Force refresh if graph is fixed because range of data received
+            # is too small to fill data range selected
+            if self.Fixed and \
+               self.Ticks[-1] - self.Ticks[0] < self.CurrentRange:
+                self.Force = True
+            
+            self.HasNewData = False
+            self.RefreshView()
+            
+        else:
+            DebugViewer.NewDataAvailable(self, ticks, *args, **kwargs)
+    
+    def ForceRefresh(self):
+        """
+        Called to force refresh of graphs
+        """
+        self.Force = True
+        wx.CallAfter(self.NewDataAvailable, None, True)
+    
+    def SetCursorTick(self, cursor_tick):
+        """
+        Set Cursor for displaying values of items at a tick given
+        @param cursor_tick: Tick of cursor
+        """
+        # Save cursor tick
+        self.CursorTick = cursor_tick
+        self.Fixed = cursor_tick is not None
+        self.UpdateCursorTick() 
+    
+    def MoveCursorTick(self, move):
+        if self.CursorTick is not None:
+            cursor_tick = max(self.Ticks[0], 
+                          min(self.CursorTick + move, 
+                              self.Ticks[-1]))
+            cursor_tick_idx = numpy.argmin(numpy.abs(self.Ticks - cursor_tick))
+            if self.Ticks[cursor_tick_idx] == self.CursorTick:
+                cursor_tick_idx = max(0, 
+                                  min(cursor_tick_idx + abs(move) / move, 
+                                      len(self.Ticks) - 1))
+            self.CursorTick = self.Ticks[cursor_tick_idx]
+            self.StartTick = max(self.Ticks[
+                                numpy.argmin(numpy.abs(self.Ticks - 
+                                        self.CursorTick + self.CurrentRange))],
+                             min(self.StartTick, self.CursorTick))
+            self.RefreshCanvasPosition()
+            self.UpdateCursorTick() 
+            
+    def ResetCursorTick(self):
+        self.CursorTick = None
+        self.Fixed = False
+        self.UpdateCursorTick()
+    
+    def UpdateCursorTick(self):
+        for panel in self.GraphicPanels:
+            if isinstance(panel, DebugVariableGraphicViewer):
+                panel.SetCursorTick(self.CursorTick)
+        self.ForceRefresh()
+    
+    def StartDragNDrop(self, panel, item, x_mouse, y_mouse, x_mouse_start, y_mouse_start):
+        if len(panel.GetItems()) > 1:
+            self.DraggingAxesPanel = DebugVariableGraphicViewer(self.GraphicsWindow, self, [item], GRAPH_PARALLEL)
+            self.DraggingAxesPanel.SetCursorTick(self.CursorTick)
+            width, height = panel.GetSize()
+            self.DraggingAxesPanel.SetSize(wx.Size(width, height))
+            self.DraggingAxesPanel.ResetGraphics()
+            self.DraggingAxesPanel.SetPosition(wx.Point(0, -height))
+        else:
+            self.DraggingAxesPanel = panel
+        self.DraggingAxesBoundingBox = panel.GetAxesBoundingBox(parent_coordinate=True)
+        self.DraggingAxesMousePos = wx.Point(
+            x_mouse_start - self.DraggingAxesBoundingBox.x, 
+            y_mouse_start - self.DraggingAxesBoundingBox.y)
+        self.MoveDragNDrop(x_mouse, y_mouse)
+        
+    def MoveDragNDrop(self, x_mouse, y_mouse):
+        self.DraggingAxesBoundingBox.x = x_mouse - self.DraggingAxesMousePos.x
+        self.DraggingAxesBoundingBox.y = y_mouse - self.DraggingAxesMousePos.y
+        self.RefreshHighlight(x_mouse, y_mouse)
+    
+    def RefreshHighlight(self, x_mouse, y_mouse):
+        for idx, panel in enumerate(self.GraphicPanels):
+            x, y = panel.GetPosition()
+            width, height = panel.GetSize()
+            rect = wx.Rect(x, y, width, height)
+            if (rect.InsideXY(x_mouse, y_mouse) or 
+                idx == 0 and y_mouse < 0 or
+                idx == len(self.GraphicPanels) - 1 and y_mouse > panel.GetPosition()[1]):
+                panel.RefreshHighlight(x_mouse - x, y_mouse - y)
+            else:
+                panel.SetHighlight(HIGHLIGHT_NONE)
+        if wx.Platform == "__WXMSW__":
+            self.RefreshView()
+        else:
+            self.ForceRefresh()
+    
+    def ResetHighlight(self):
+        for panel in self.GraphicPanels:
+            panel.SetHighlight(HIGHLIGHT_NONE)
+        if wx.Platform == "__WXMSW__":
+            self.RefreshView()
+        else:
+            self.ForceRefresh()
+    
+    def IsDragging(self):
+        return self.DraggingAxesPanel is not None
+    
+    def GetDraggingAxesClippingRegion(self, panel):
+        x, y = panel.GetPosition()
+        width, height = panel.GetSize()
+        bbox = wx.Rect(x, y, width, height)
+        bbox = bbox.Intersect(self.DraggingAxesBoundingBox)
+        bbox.x -= x
+        bbox.y -= y
+        return bbox
+    
+    def GetDraggingAxesPosition(self, panel):
+        x, y = panel.GetPosition()
+        return wx.Point(self.DraggingAxesBoundingBox.x - x,
+                        self.DraggingAxesBoundingBox.y - y)
+    
+    def StopDragNDrop(self, variable, x_mouse, y_mouse):
+        if self.DraggingAxesPanel not in self.GraphicPanels:
+            self.DraggingAxesPanel.Destroy()
+        self.DraggingAxesPanel = None
+        self.DraggingAxesBoundingBox = None
+        self.DraggingAxesMousePos = None
+        for idx, panel in enumerate(self.GraphicPanels):
+            panel.SetHighlight(HIGHLIGHT_NONE)
+            xw, yw = panel.GetPosition()
+            width, height = panel.GetSize()
+            bbox = wx.Rect(xw, yw, width, height)
+            if bbox.InsideXY(x_mouse, y_mouse):
+                panel.ShowButtons(True)
+                merge_type = GRAPH_PARALLEL
+                if isinstance(panel, DebugVariableTextViewer) or panel.Is3DCanvas():
+                    if y_mouse > yw + height / 2:
+                        idx += 1
+                    wx.CallAfter(self.MoveValue, variable, idx, True)
+                else:
+                    rect = panel.GetAxesBoundingBox(True)
+                    if rect.InsideXY(x_mouse, y_mouse):
+                        merge_rect = wx.Rect(rect.x, rect.y, rect.width / 2., rect.height)
+                        if merge_rect.InsideXY(x_mouse, y_mouse):
+                            merge_type = GRAPH_ORTHOGONAL
+                        wx.CallAfter(self.MergeGraphs, variable, idx, merge_type, force=True)
+                    else:
+                        if y_mouse > yw + height / 2:
+                            idx += 1
+                        wx.CallAfter(self.MoveValue, variable, idx, True)
+                self.ForceRefresh()
+                return 
+        width, height = self.GraphicsWindow.GetVirtualSize()
+        rect = wx.Rect(0, 0, width, height)
+        if rect.InsideXY(x_mouse, y_mouse):
+            wx.CallAfter(self.MoveValue, variable, len(self.GraphicPanels), True)
+        self.ForceRefresh()
+    
+    def RefreshGraphicsSizer(self):
+        self.GraphicsSizer.Clear()
+        
+        for panel in self.GraphicPanels:
+            self.GraphicsSizer.AddWindow(panel, flag=wx.GROW)
+            
+        self.GraphicsSizer.Layout()
+        self.RefreshGraphicsWindowScrollbars()
+    
+    def RefreshView(self):
+        self.RefreshCanvasPosition()
+        
+        width, height = self.GraphicsWindow.GetVirtualSize()
+        bitmap = wx.EmptyBitmap(width, height)
+        dc = wx.BufferedDC(wx.ClientDC(self.GraphicsWindow), bitmap)
+        dc.Clear()
+        dc.BeginDrawing()
+        if self.DraggingAxesPanel is not None:
+            destBBox = self.DraggingAxesBoundingBox
+            srcBBox = self.DraggingAxesPanel.GetAxesBoundingBox()
+            
+            srcBmp = _convert_agg_to_wx_bitmap(self.DraggingAxesPanel.get_renderer(), None)
+            srcDC = wx.MemoryDC()
+            srcDC.SelectObject(srcBmp)
+                
+            dc.Blit(destBBox.x, destBBox.y, 
+                    int(destBBox.width), int(destBBox.height), 
+                    srcDC, srcBBox.x, srcBBox.y)
+        dc.EndDrawing()
+        
+        if not self.Fixed or self.Force:
+            self.Force = False
+            refresh_graphics = True
+        else:
+            refresh_graphics = False
+        
+        if self.DraggingAxesPanel is not None and self.DraggingAxesPanel not in self.GraphicPanels:
+            self.DraggingAxesPanel.RefreshViewer(refresh_graphics)
+        for panel in self.GraphicPanels:
+            if isinstance(panel, DebugVariableGraphicViewer):
+                panel.RefreshViewer(refresh_graphics)
+            else:
+                panel.RefreshViewer()
+        
+        if self.CursorTick is not None:
+            tick = self.CursorTick
+        elif len(self.Ticks) > 0:
+            tick = self.Ticks[-1]
+        else:
+            tick = None
+        if tick is not None:
+            self.TickLabel.SetLabel("Tick: %d" % tick)
+            tick_duration = int(tick * self.Ticktime)
+            not_null = False
+            duration = ""
+            for value, format in [(tick_duration / DAY, "%dd"),
+                                  ((tick_duration % DAY) / HOUR, "%dh"),
+                                  ((tick_duration % HOUR) / MINUTE, "%dm"),
+                                  ((tick_duration % MINUTE) / SECOND, "%ds")]:
+                
+                if value > 0 or not_null:
+                    duration += format % value
+                    not_null = True
+            
+            duration += "%gms" % (float(tick_duration % SECOND) / MILLISECOND) 
+            self.TickTimeLabel.SetLabel("t: %s" % duration)
+        else:
+            self.TickLabel.SetLabel("")
+            self.TickTimeLabel.SetLabel("")
+        self.TickSizer.Layout()
+    
+    def SubscribeAllDataConsumers(self):
+        DebugViewer.SubscribeAllDataConsumers(self)
+        
+        if self.DataProducer is not None:
+            if self.DataProducer is not None:
+                self.SetTickTime(self.DataProducer.GetTicktime())
+        
+        self.ResetCursorTick()
+        
+        for panel in self.GraphicPanels[:]:
+            panel.SubscribeAllDataConsumers()
+            if panel.ItemsIsEmpty():
+                if panel.HasCapture():
+                    panel.ReleaseMouse()
+                self.GraphicPanels.remove(panel)
+                panel.Destroy()
+        
+        self.ResetVariableNameMask()
+        self.RefreshGraphicsSizer()
+        self.ForceRefresh()
+    
+    def ResetView(self):
+        self.UnsubscribeAllDataConsumers()
+        
+        self.Fixed = False
+        for panel in self.GraphicPanels:
+            panel.Destroy()
+        self.GraphicPanels = []
+        self.ResetVariableNameMask()
+        self.RefreshGraphicsSizer()
+    
+    def SetCanvasPosition(self, tick):
+        tick = max(self.Ticks[0], min(tick, self.Ticks[-1] - self.CurrentRange))
+        self.StartTick = self.Ticks[numpy.argmin(numpy.abs(self.Ticks - tick))]
+        self.Fixed = True
+        self.RefreshCanvasPosition()
+        self.ForceRefresh()
+    
+    def RefreshCanvasPosition(self):
+        if len(self.Ticks) > 0:
+            pos = int(self.StartTick - self.Ticks[0])
+            range = int(self.Ticks[-1] - self.Ticks[0])
+        else:
+            pos = 0
+            range = 0
+        self.CanvasPosition.SetScrollbar(pos, self.CurrentRange, range, self.CurrentRange)
+    
+    def ChangeRange(self, dir, tick=None):
+        current_range = self.CurrentRange
+        current_range_idx = self.CanvasRange.GetSelection()
+        new_range_idx = max(0, min(current_range_idx + dir, len(RANGE_VALUES) - 1))
+        if new_range_idx != current_range_idx:
+            self.CanvasRange.SetSelection(new_range_idx)
+            self.CurrentRange = RANGE_VALUES[new_range_idx][1] / self.Ticktime
+            if len(self.Ticks) > 0:
+                if tick is None:
+                    tick = self.StartTick + self.CurrentRange / 2.
+                new_start_tick = min(tick - (tick - self.StartTick) * self.CurrentRange / current_range,
+                                     self.Ticks[-1] - self.CurrentRange)
+                self.StartTick = self.Ticks[numpy.argmin(numpy.abs(self.Ticks - new_start_tick))]
+                self.Fixed = new_start_tick < self.Ticks[-1] - self.CurrentRange
+            self.ForceRefresh()
+    
+    def RefreshRange(self):
+        if len(self.Ticks) > 0:
+            if self.Fixed and self.Ticks[-1] - self.Ticks[0] < self.CurrentRange:
+                self.Fixed = False
+            if self.Fixed:
+                self.StartTick = min(self.StartTick, self.Ticks[-1] - self.CurrentRange)
+            else:
+                self.StartTick = max(self.Ticks[0], self.Ticks[-1] - self.CurrentRange)
+        self.ForceRefresh()
+    
+    def OnRangeChanged(self, event):
+        try:
+            self.CurrentRange = RANGE_VALUES[self.CanvasRange.GetSelection()][1] / self.Ticktime
+        except ValueError, e:
+            self.CanvasRange.SetValue(str(self.CurrentRange))
+        wx.CallAfter(self.RefreshRange)
+        event.Skip()
+    
+    def OnCurrentButton(self, event):
+        if len(self.Ticks) > 0:
+            self.StartTick = max(self.Ticks[0], self.Ticks[-1] - self.CurrentRange)
+            self.ResetCursorTick()
+        event.Skip()
+    
+    def CopyDataToClipboard(self, variables):
+        text = "tick;%s;\n" % ";".join([item.GetVariable() for item, data in variables])
+        next_tick = NextTick(variables)
+        while next_tick is not None:
+            values = []
+            for item, data in variables:
+                if len(data) > 0:
+                    if next_tick == data[0][0]:
+                        var_type = item.GetVariableType()
+                        if var_type in ["STRING", "WSTRING"]:
+                            value = item.GetRawValue(int(data.pop(0)[2]))
+                            if var_type == "STRING":
+                                values.append("'%s'" % value)
+                            else:
+                                values.append('"%s"' % value)
+                        else:
+                            values.append("%.3f" % data.pop(0)[1])
+                    else:
+                        values.append("")
+                else:
+                    values.append("")
+            text += "%d;%s;\n" % (next_tick, ";".join(values))
+            next_tick = NextTick(variables)
+        self.ParentWindow.SetCopyBuffer(text)
+    
+    def OnExportGraphButton(self, event):
+        items = reduce(lambda x, y: x + y,
+                       [panel.GetItems() for panel in self.GraphicPanels],
+                       [])
+        variables = [(item, [entry for entry in item.GetData()])
+                     for item in items
+                     if item.IsNumVariable()]
+        wx.CallAfter(self.CopyDataToClipboard, variables)
+        event.Skip()
+    
+    def OnPositionChanging(self, event):
+        if len(self.Ticks) > 0:
+            self.StartTick = self.Ticks[0] + event.GetPosition()
+            self.Fixed = True
+            self.ForceRefresh()
+        event.Skip()
+    
+    def GetRange(self):
+        return self.StartTick, self.StartTick + self.CurrentRange
+    
+    def GetViewerIndex(self, viewer):
+        if viewer in self.GraphicPanels:
+            return self.GraphicPanels.index(viewer)
+        return None
+    
+    def IsViewerFirst(self, viewer):
+        return viewer == self.GraphicPanels[0]
+    
+    def HighlightPreviousViewer(self, viewer):
+        if self.IsViewerFirst(viewer):
+            return
+        idx = self.GetViewerIndex(viewer)
+        if idx is None:
+            return
+        self.GraphicPanels[idx-1].SetHighlight(HIGHLIGHT_AFTER)
+    
+    def ResetVariableNameMask(self):
+        items = []
+        for panel in self.GraphicPanels:
+            items.extend(panel.GetItems())
+        if len(items) > 1:
+            self.VariableNameMask = reduce(compute_mask,
+                [item.GetVariable().split('.') for item in items])
+        elif len(items) > 0:
+            self.VariableNameMask = items[0].GetVariable().split('.')[:-1] + ['*']
+        else:
+            self.VariableNameMask = []
+        self.MaskLabel.ChangeValue(".".join(self.VariableNameMask))
+        self.MaskLabel.SetInsertionPoint(self.MaskLabel.GetLastPosition())
+            
+    def GetVariableNameMask(self):
+        return self.VariableNameMask
+    
+    def InsertValue(self, iec_path, idx = None, force=False, graph=False):
+        for panel in self.GraphicPanels:
+            if panel.GetItem(iec_path) is not None:
+                if graph and isinstance(panel, DebugVariableTextViewer):
+                    self.ToggleViewerType(panel)
+                return
+        if idx is None:
+            idx = len(self.GraphicPanels)
+        item = DebugVariableItem(self, iec_path, True)
+        result = self.AddDataConsumer(iec_path.upper(), item)
+        if result is not None or force:
+            
+            self.Freeze()
+            if item.IsNumVariable() and graph:
+                panel = DebugVariableGraphicViewer(self.GraphicsWindow, self, [item], GRAPH_PARALLEL)
+                if self.CursorTick is not None:
+                    panel.SetCursorTick(self.CursorTick)
+            else:
+                panel = DebugVariableTextViewer(self.GraphicsWindow, self, [item])
+            if idx is not None:
+                self.GraphicPanels.insert(idx, panel)
+            else:
+                self.GraphicPanels.append(panel)
+            self.ResetVariableNameMask()
+            self.RefreshGraphicsSizer()
+            self.Thaw()
+            self.ForceRefresh()
+    
+    def MoveValue(self, iec_path, idx = None, graph=False):
+        if idx is None:
+            idx = len(self.GraphicPanels)
+        source_panel = None
+        item = None
+        for panel in self.GraphicPanels:
+            item = panel.GetItem(iec_path)
+            if item is not None:
+                source_panel = panel
+                break
+        if source_panel is not None:
+            source_panel_idx = self.GraphicPanels.index(source_panel)
+            
+            if (len(source_panel.GetItems()) == 1):
+                
+                if source_panel_idx < idx:
+                    self.GraphicPanels.insert(idx, source_panel)
+                    self.GraphicPanels.pop(source_panel_idx)
+                elif source_panel_idx > idx:
+                    self.GraphicPanels.pop(source_panel_idx)
+                    self.GraphicPanels.insert(idx, source_panel)
+                else:
+                    return
+                
+            else:
+                source_panel.RemoveItem(item)
+                source_size = source_panel.GetSize()
+                if item.IsNumVariable() and graph:
+                    panel = DebugVariableGraphicViewer(self.GraphicsWindow, self, [item], GRAPH_PARALLEL)
+                    panel.SetCanvasHeight(source_size.height)
+                    if self.CursorTick is not None:
+                        panel.SetCursorTick(self.CursorTick)
+                
+                else:
+                    panel = DebugVariableTextViewer(self.GraphicsWindow, self, [item])
+                
+                self.GraphicPanels.insert(idx, panel)
+                
+                if source_panel.ItemsIsEmpty():
+                    if source_panel.HasCapture():
+                        source_panel.ReleaseMouse()
+                    source_panel.Destroy()
+                    self.GraphicPanels.remove(source_panel)
+                
+            self.ResetVariableNameMask()
+            self.RefreshGraphicsSizer()
+            self.ForceRefresh()
+    
+    def MergeGraphs(self, source, target_idx, merge_type, force=False):
+        source_item = None
+        source_panel = None
+        for panel in self.GraphicPanels:
+            source_item = panel.GetItem(source)
+            if source_item is not None:
+                source_panel = panel
+                break
+        if source_item is None:
+            item = DebugVariableItem(self, source, True)
+            if item.IsNumVariable():
+                result = self.AddDataConsumer(source.upper(), item)
+                if result is not None or force:
+                    source_item = item
+        if source_item is not None and source_item.IsNumVariable():
+            if source_panel is not None:
+                source_size = source_panel.GetSize()
+            else:
+                source_size = None
+            target_panel = self.GraphicPanels[target_idx]
+            graph_type = target_panel.GraphType
+            if target_panel != source_panel:
+                if (merge_type == GRAPH_PARALLEL and graph_type != merge_type or
+                    merge_type == GRAPH_ORTHOGONAL and 
+                    (graph_type == GRAPH_PARALLEL and len(target_panel.Items) > 1 or
+                     graph_type == GRAPH_ORTHOGONAL and len(target_panel.Items) >= 3)):
+                    return
+                
+                if source_panel is not None:
+                    source_panel.RemoveItem(source_item)
+                    if source_panel.ItemsIsEmpty():
+                        if source_panel.HasCapture():
+                            source_panel.ReleaseMouse()
+                        source_panel.Destroy()
+                        self.GraphicPanels.remove(source_panel)
+            elif (merge_type != graph_type and len(target_panel.Items) == 2):
+                target_panel.RemoveItem(source_item)
+            else:
+                target_panel = None
+                
+            if target_panel is not None:
+                target_panel.AddItem(source_item)
+                target_panel.GraphType = merge_type
+                size = target_panel.GetSize()
+                if merge_type == GRAPH_ORTHOGONAL:
+                    target_panel.SetCanvasHeight(size.width)
+                elif source_size is not None and source_panel != target_panel:
+                    target_panel.SetCanvasHeight(size.height + source_size.height)
+                else:
+                    target_panel.SetCanvasHeight(size.height)
+                target_panel.ResetGraphics()
+                
+                self.ResetVariableNameMask()
+                self.RefreshGraphicsSizer()
+                self.ForceRefresh()
+    
+    def DeleteValue(self, source_panel, item=None):
+        source_idx = self.GetViewerIndex(source_panel)
+        if source_idx is not None:
+            
+            if item is None:
+                source_panel.ClearItems()
+                source_panel.Destroy()
+                self.GraphicPanels.remove(source_panel)
+                self.ResetVariableNameMask()
+                self.RefreshGraphicsSizer()
+            else:
+                source_panel.RemoveItem(item)
+                if source_panel.ItemsIsEmpty():
+                    source_panel.Destroy()
+                    self.GraphicPanels.remove(source_panel)
+                    self.ResetVariableNameMask()
+                    self.RefreshGraphicsSizer()
+            if len(self.GraphicPanels) == 0:
+                self.Fixed = False
+                self.ResetCursorTick()
+            self.ForceRefresh()
+    
+    def ToggleViewerType(self, panel):
+        panel_idx = self.GetViewerIndex(panel)
+        if panel_idx is not None:
+            self.GraphicPanels.remove(panel)
+            items = panel.GetItems()
+            if isinstance(panel, DebugVariableGraphicViewer):
+                for idx, item in enumerate(items):
+                    new_panel = DebugVariableTextViewer(self.GraphicsWindow, self, [item])
+                    self.GraphicPanels.insert(panel_idx + idx, new_panel)
+            else:
+                new_panel = DebugVariableGraphicViewer(self.GraphicsWindow, self, items, GRAPH_PARALLEL)
+                self.GraphicPanels.insert(panel_idx, new_panel)
+            panel.Destroy()
+        self.RefreshGraphicsSizer()
+        self.ForceRefresh()
+    
+    def ResetGraphicsValues(self):
+        self.Ticks = numpy.array([])
+        self.StartTick = 0
+        for panel in self.GraphicPanels:
+            panel.ResetItemsData()
+        self.ResetCursorTick()
+
+    def RefreshGraphicsWindowScrollbars(self):
+        xstart, ystart = self.GraphicsWindow.GetViewStart()
+        window_size = self.GraphicsWindow.GetClientSize()
+        vwidth, vheight = self.GraphicsSizer.GetMinSize()
+        posx = max(0, min(xstart, (vwidth - window_size[0]) / SCROLLBAR_UNIT))
+        posy = max(0, min(ystart, (vheight - window_size[1]) / SCROLLBAR_UNIT))
+        self.GraphicsWindow.Scroll(posx, posy)
+        self.GraphicsWindow.SetScrollbars(SCROLLBAR_UNIT, SCROLLBAR_UNIT, 
+                vwidth / SCROLLBAR_UNIT, vheight / SCROLLBAR_UNIT, posx, posy)
+    
+    def OnGraphicsWindowEraseBackground(self, event):
+        pass
+    
+    def OnGraphicsWindowPaint(self, event):
+        self.RefreshView()
+        event.Skip()
+    
+    def OnGraphicsWindowResize(self, event):
+        size = self.GetSize()
+        for panel in self.GraphicPanels:
+            panel_size = panel.GetSize()
+            if (isinstance(panel, DebugVariableGraphicViewer) and 
+                panel.GraphType == GRAPH_ORTHOGONAL and 
+                panel_size.width == panel_size.height):
+                panel.SetCanvasHeight(size.width)
+        self.RefreshGraphicsWindowScrollbars()
+        self.GraphicsSizer.Layout()
+        event.Skip()
+
+    def OnGraphicsWindowMouseWheel(self, event):
+        if self.VetoScrollEvent:
+            self.VetoScrollEvent = False
+        else:
+            event.Skip()
--- a/controls/DebugVariablePanel/DebugVariableTablePanel.py	Mon Oct 14 10:31:32 2013 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,509 +0,0 @@
-#!/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
-
-from types import TupleType
-
-import wx
-import wx.lib.buttons
-
-from editors.DebugViewer import DebugViewer
-from controls import CustomGrid, CustomTable
-from dialogs.ForceVariableDialog import ForceVariableDialog
-from util.BitmapLibrary import GetBitmap
-
-from DebugVariableItem import DebugVariableItem
-
-def GetDebugVariablesTableColnames():
-    """
-    Function returning table column header labels
-    @return: List of labels [col_label,...]
-    """
-    _ = lambda x : x
-    return [_("Variable"), _("Value")]
-
-#-------------------------------------------------------------------------------
-#                        Debug Variable Table Panel
-#-------------------------------------------------------------------------------
-
-"""
-Class that implements a custom table storing value to display in Debug Variable
-Table Panel grid
-"""
-
-class DebugVariableTable(CustomTable):
-    
-    def GetValue(self, row, col):
-        if row < self.GetNumberRows():
-            return self.GetValueByName(row, self.GetColLabelValue(col, False))
-        return ""
-    
-    def SetValue(self, row, col, value):
-        if col < len(self.colnames):
-            self.SetValueByName(row, self.GetColLabelValue(col, False), value)
-            
-    def GetValueByName(self, row, colname):
-        if row < self.GetNumberRows():
-            if colname == "Variable":
-                return self.data[row].GetVariable()
-            elif colname == "Value":
-                return self.data[row].GetValue()
-        return ""
-
-    def SetValueByName(self, row, colname, value):
-        if row < self.GetNumberRows():
-            if colname == "Variable":
-                self.data[row].SetVariable(value)
-            elif colname == "Value":
-                self.data[row].SetValue(value)
-    
-    def IsForced(self, row):
-        if row < self.GetNumberRows():
-            return self.data[row].IsForced()
-        return False
-    
-    def _updateColAttrs(self, grid):
-        """
-        wx.grid.Grid -> update the column attributes to add the
-        appropriate renderer given the column name.
-
-        Otherwise default to the default renderer.
-        """
-        
-        for row in range(self.GetNumberRows()):
-            for col in range(self.GetNumberCols()):
-                colname = self.GetColLabelValue(col, False)
-                if colname == "Value":
-                    if self.IsForced(row):
-                        grid.SetCellTextColour(row, col, wx.BLUE)
-                    else:
-                        grid.SetCellTextColour(row, col, wx.BLACK)
-                grid.SetReadOnly(row, col, True)
-            self.ResizeRow(grid, row)
-    
-    def RefreshValues(self, grid):
-        for col in xrange(self.GetNumberCols()):
-            colname = self.GetColLabelValue(col, False)
-            if colname == "Value":
-                for row in xrange(self.GetNumberRows()):
-                    grid.SetCellValue(row, col, str(self.data[row].GetValue()))
-                    if self.IsForced(row):
-                        grid.SetCellTextColour(row, col, wx.BLUE)
-                    else:
-                        grid.SetCellTextColour(row, col, wx.BLACK)
-      
-    def AppendItem(self, item):
-        self.data.append(item)
-    
-    def InsertItem(self, idx, item):
-        self.data.insert(idx, item)
-    
-    def RemoveItem(self, item):
-        self.data.remove(item)
-    
-    def MoveItem(self, idx, new_idx):
-        self.data.insert(new_idx, self.data.pop(idx))
-        
-    def GetItem(self, idx):
-        return self.data[idx]
-
-
-#-------------------------------------------------------------------------------
-#                  Debug Variable Table Panel Drop Target
-#-------------------------------------------------------------------------------
-
-"""
-Class that implements a custom drop target class for Debug Variable Table Panel
-"""
-
-class DebugVariableTableDropTarget(wx.TextDropTarget):
-    
-    def __init__(self, parent):
-        """
-        Constructor
-        @param window: Reference to the Debug Variable Panel
-        """
-        wx.TextDropTarget.__init__(self)
-        self.ParentWindow = parent
-        
-    def __del__(self):
-        """
-        Destructor
-        """
-        # Remove reference to Debug Variable Panel
-        self.ParentWindow = None
-        
-    def OnDropText(self, x, y, data):
-        """
-        Function called when mouse is dragged over Drop Target
-        @param x: X coordinate of mouse pointer
-        @param y: Y coordinate of mouse pointer
-        @param data: Text associated to drag'n drop
-        """
-        message = None
-        
-        # Check that data is valid regarding DebugVariablePanel
-        try:
-            values = eval(data)
-            if not isinstance(values, TupleType):
-                raise ValueError
-        except:
-            message = _("Invalid value \"%s\" for debug variable") % data
-            values = None
-        
-        # Display message if data is invalid
-        if message is not None:
-            wx.CallAfter(self.ShowMessage, message)
-        
-        # Data contain a reference to a variable to debug
-        elif values[1] == "debug":
-            grid = self.ParentWindow.VariablesGrid
-            
-            # Get row where variable was dropped
-            x, y = grid.CalcUnscrolledPosition(x, y)
-            row = grid.YToRow(y - grid.GetColLabelSize())
-            
-            # If no row found add variable at table end
-            if row == wx.NOT_FOUND:
-                row = self.ParentWindow.Table.GetNumberRows()
-            
-            # Add variable to table
-            self.ParentWindow.InsertValue(values[0], row, force=True)
-            
-    def ShowMessage(self, message):
-        """
-        Show error message in Error Dialog
-        @param message: Error message to display
-        """
-        dialog = wx.MessageDialog(self.ParentWindow, 
-                                  message, 
-                                  _("Error"), 
-                                  wx.OK|wx.ICON_ERROR)
-        dialog.ShowModal()
-        dialog.Destroy()
-
-
-#-------------------------------------------------------------------------------
-#                       Debug Variable Table Panel
-#-------------------------------------------------------------------------------
-
-"""
-Class that implements a panel displaying debug variable values in a table
-"""
-
-class DebugVariableTablePanel(wx.Panel, DebugViewer):
-    
-    def __init__(self, parent, producer, window):
-        """
-        Constructor
-        @param parent: Reference to the parent wx.Window
-        @param producer: Object receiving debug value and dispatching them to
-        consumers
-        @param window: Reference to Beremiz frame
-        """
-        wx.Panel.__init__(self, parent, style=wx.SP_3D|wx.TAB_TRAVERSAL)
-        
-        # Save Reference to Beremiz frame
-        self.ParentWindow = window
-        
-        # Variable storing flag indicating that variable displayed in table
-        # received new value and then table need to be refreshed
-        self.HasNewData = False
-        
-        DebugViewer.__init__(self, producer, True)
-        
-        # Construction of window layout by creating controls and sizers
-        
-        main_sizer = wx.FlexGridSizer(cols=1, hgap=0, rows=2, vgap=0)
-        main_sizer.AddGrowableCol(0)
-        main_sizer.AddGrowableRow(1)
-        
-        button_sizer = wx.BoxSizer(wx.HORIZONTAL)
-        main_sizer.AddSizer(button_sizer, border=5, 
-              flag=wx.ALIGN_RIGHT|wx.ALL)
-        
-        # Creation of buttons for navigating in table
-        
-        for name, bitmap, help in [
-                ("DeleteButton", "remove_element", _("Remove debug variable")),
-                ("UpButton", "up", _("Move debug variable up")),
-                ("DownButton", "down", _("Move debug variable down"))]:
-            button = wx.lib.buttons.GenBitmapButton(self, 
-                  bitmap=GetBitmap(bitmap), 
-                  size=wx.Size(28, 28), style=wx.NO_BORDER)
-            button.SetToolTipString(help)
-            setattr(self, name, button)
-            button_sizer.AddWindow(button, border=5, flag=wx.LEFT)
-        
-        # Creation of grid and associated table
-        
-        self.VariablesGrid = CustomGrid(self, 
-                size=wx.Size(-1, 150), style=wx.VSCROLL)
-        # Define grid drop target
-        self.VariablesGrid.SetDropTarget(DebugVariableTableDropTarget(self))
-        self.VariablesGrid.Bind(wx.grid.EVT_GRID_CELL_RIGHT_CLICK, 
-              self.OnVariablesGridCellRightClick)
-        self.VariablesGrid.Bind(wx.grid.EVT_GRID_CELL_LEFT_CLICK, 
-              self.OnVariablesGridCellLeftClick)
-        main_sizer.AddWindow(self.VariablesGrid, flag=wx.GROW)
-    
-        self.Table = DebugVariableTable(self, [], 
-                GetDebugVariablesTableColnames())
-        self.VariablesGrid.SetTable(self.Table)
-        self.VariablesGrid.SetButtons({"Delete": self.DeleteButton,
-                                       "Up": self.UpButton,
-                                       "Down": self.DownButton})
-        
-        # Definition of function associated to navigation buttons
-        
-        def _AddVariable(new_row):
-            return self.VariablesGrid.GetGridCursorRow()
-        setattr(self.VariablesGrid, "_AddRow", _AddVariable)
-    
-        def _DeleteVariable(row):
-            item = self.Table.GetItem(row)
-            self.RemoveDataConsumer(item)
-            self.Table.RemoveItem(item)
-            self.RefreshView()
-        setattr(self.VariablesGrid, "_DeleteRow", _DeleteVariable)
-        
-        def _MoveVariable(row, move):
-            new_row = max(0, min(row + move, self.Table.GetNumberRows() - 1))
-            if new_row != row:
-                self.Table.MoveItem(row, new_row)
-                self.RefreshView()
-            return new_row
-        setattr(self.VariablesGrid, "_MoveRow", _MoveVariable)
-        
-        # Initialization of grid layout
-        
-        self.VariablesGrid.SetRowLabelSize(0)
-        
-        self.GridColSizes = [200, 100]
-        
-        for col in range(self.Table.GetNumberCols()):
-            attr = wx.grid.GridCellAttr()
-            attr.SetAlignment(wx.ALIGN_RIGHT, wx.ALIGN_CENTER)
-            self.VariablesGrid.SetColAttr(col, attr)
-            self.VariablesGrid.SetColSize(col, self.GridColSizes[col])
-        
-        self.Table.ResetView(self.VariablesGrid)
-        self.VariablesGrid.RefreshButtons()
-        
-        self.SetSizer(main_sizer)
-    
-    def RefreshNewData(self, *args, **kwargs):
-        """
-        Called to refresh Table according to values received by variables
-        Can receive any parameters (not used here)
-        """
-        # Refresh 'Value' column of table if new data have been received since
-        # last refresh
-        if self.HasNewData:
-            self.HasNewData = False
-            self.RefreshView(only_values=True)
-        DebugViewer.RefreshNewData(self, *args, **kwargs)
-    
-    def RefreshView(self, only_values=False):
-        """
-        Function refreshing table layout and values
-        @param only_values: True if only 'Value' column need to be updated
-        """
-        # Block refresh until table layout and values are completely updated
-        self.Freeze()
-        
-        # Update only 'value' column from table 
-        if only_values:
-            self.Table.RefreshValues(self.VariablesGrid)
-        
-        # Update complete table layout refreshing table navigation buttons
-        # state according to 
-        else:
-            self.Table.ResetView(self.VariablesGrid)
-            self.VariablesGrid.RefreshButtons()
-        
-        self.Thaw()
-        
-    def ResetView(self):
-        """
-        Function removing all variables denugged from table
-        @param only_values: True if only 'Value' column need to be updated
-        """
-        # Unsubscribe all variables debugged
-        self.UnsubscribeAllDataConsumers()
-        
-        # Clear table content
-        self.Table.Empty()
-        
-        # Update table layout
-        self.Freeze()
-        self.Table.ResetView(self.VariablesGrid)
-        self.VariablesGrid.RefreshButtons()
-        self.Thaw()
-    
-    def SubscribeAllDataConsumers(self):
-        """
-        Function refreshing table layout and values
-        @param only_values: True if only 'Value' column need to be updated
-        """
-        DebugViewer.SubscribeAllDataConsumers(self)
-        
-        # Navigate through variable displayed in table, removing those that
-        # doesn't exist anymore in PLC
-        for item in self.Table.GetData()[:]:
-            iec_path = item.GetVariable()
-            if self.GetDataType(iec_path) is None:
-                self.RemoveDataConsumer(item)
-                self.Table.RemoveItem(idx)
-            else:
-                self.AddDataConsumer(iec_path.upper(), item)
-                item.RefreshVariableType()
-        
-        # Update table layout
-        self.Freeze()
-        self.Table.ResetView(self.VariablesGrid)
-        self.VariablesGrid.RefreshButtons()
-        self.Thaw()
-    
-    def GetForceVariableMenuFunction(self, item):
-        """
-        Function returning callback function for contextual menu 'Force' item
-        @param item: Debug Variable item where contextual menu was opened 
-        @return: Callback function
-        """
-        def ForceVariableFunction(event):
-            # Get variable path and data type
-            iec_path = item.GetVariable()
-            iec_type = self.GetDataType(iec_path)
-            
-            # Return immediately if not data type found
-            if iec_type is None:
-                return
-            
-            # Open dialog for entering value to force variable
-            dialog = ForceVariableDialog(self, iec_type, str(item.GetValue()))
-            
-            # If valid value entered, force variable
-            if dialog.ShowModal() == wx.ID_OK:
-                self.ForceDataValue(iec_path.upper(), dialog.GetValue())
-        
-        return ForceVariableFunction
-
-    def GetReleaseVariableMenuFunction(self, iec_path):
-        """
-        Function returning callback function for contextual menu 'Release' item
-        @param iec_path: Debug Variable path where contextual menu was opened
-        @return: Callback function
-        """
-        def ReleaseVariableFunction(event):
-            # Release variable
-            self.ReleaseDataValue(iec_path)
-        return ReleaseVariableFunction
-    
-    def OnVariablesGridCellLeftClick(self, event):
-        """
-        Called when left mouse button is pressed on a table cell
-        @param event: wx.grid.GridEvent
-        """
-        # Initiate a drag and drop if the cell clicked was in 'Variable' column
-        if self.Table.GetColLabelValue(event.GetCol(), False) == "Variable":
-            item = self.Table.GetItem(event.GetRow())
-            data = wx.TextDataObject(str((item.GetVariable(), "debug")))
-            dragSource = wx.DropSource(self.VariablesGrid)
-            dragSource.SetData(data)
-            dragSource.DoDragDrop()
-        
-        event.Skip()
-    
-    def OnVariablesGridCellRightClick(self, event):
-        """
-        Called when right mouse button is pressed on a table cell
-        @param event: wx.grid.GridEvent
-        """
-        # Open a contextual menu if the cell clicked was in 'Value' column
-        if self.Table.GetColLabelValue(event.GetCol(), False) == "Value":
-            row = event.GetRow()
-            
-            # Get variable path
-            item = self.Table.GetItem(row)
-            iec_path = item.GetVariable().upper()
-            
-            # Create contextual menu
-            menu = wx.Menu(title='')
-            
-            # Add menu items
-            for text, enable, callback in [
-                (_("Force value"), True,
-                 self.GetForceVariableMenuFunction(item)),
-                # Release menu item is enabled only if variable is forced 
-                (_("Release value"), self.Table.IsForced(row),
-                 self.GetReleaseVariableMenuFunction(iec_path))]:
-                
-                new_id = wx.NewId()
-                menu.Append(help='', id=new_id, kind=wx.ITEM_NORMAL, text=text)
-                menu.Enable(new_id, enable)
-                self.Bind(wx.EVT_MENU, callback, id=new_id)
-            
-            # Popup contextual menu
-            self.PopupMenu(menu)
-            
-            menu.Destroy()
-        event.Skip()
-    
-    def InsertValue(self, iec_path, index=None, force=False, graph=False):
-        """
-        Insert a new variable to debug in table
-        @param iec_path: Variable path to debug
-        @param index: Row where insert the variable in table (default None,
-        insert at last position)
-        @param force: Force insertion of variable even if not defined in
-        producer side
-        @param graph: Values must be displayed in graph canvas (Do nothing,
-        here for compatibility with Debug Variable Graphic Panel)
-        """
-        # Return immediately if variable is already debugged
-        for item in self.Table.GetData():
-            if iec_path == item.GetVariable():
-                return
-            
-        # Insert at last position if index not defined
-        if index is None:
-            index = self.Table.GetNumberRows()
-        
-        # Subscribe variable to producer
-        item = DebugVariableItem(self, iec_path)
-        result = self.AddDataConsumer(iec_path.upper(), item)
-        
-        # Insert variable in table if subscription done or insertion forced
-        if result is not None or force:
-            self.Table.InsertItem(index, item)
-            self.RefreshView()
-    
-    def ResetGraphicsValues(self):
-        """
-        Called to reset graphics values when PLC is started
-        (Nothing to do because no graphic values here. Defined for
-        compatibility with Debug Variable Graphic Panel)
-        """
-        pass
-    
\ No newline at end of file
--- a/controls/DebugVariablePanel/__init__.py	Mon Oct 14 10:31:32 2013 +0200
+++ b/controls/DebugVariablePanel/__init__.py	Mon Oct 14 10:49:04 2013 +0200
@@ -1,4 +1,1 @@
-try:
-    from DebugVariableGraphicPanel import DebugVariableGraphicPanel as DebugVariablePanel
-except:
-    from DebugVariableTablePanel import DebugVariableTablePanel as DebugVariablePanel
\ No newline at end of file
+from DebugVariablePanel import DebugVariablePanel
\ No newline at end of file
--- a/controls/PouInstanceVariablesPanel.py	Mon Oct 14 10:31:32 2013 +0200
+++ b/controls/PouInstanceVariablesPanel.py	Mon Oct 14 10:49:04 2013 +0200
@@ -114,8 +114,6 @@
 
 class PouInstanceVariablesPanel(wx.Panel):
 
-    USE_MPL = False
-    
     def __init__(self, parent, window, controller, debug):
         wx.Panel.__init__(self, name='PouInstanceTreePanel', 
                 parent=parent, pos=wx.Point(0, 0), 
@@ -154,14 +152,11 @@
         self.VariablesList.Bind(wx.EVT_KEY_DOWN, self.OnVariablesListKeyDown)
         
         self.TreeRightImageList = wx.ImageList(24, 24)
-        self.InstanceGraphImage = self.TreeRightImageList.Add(GetBitmap("instance_graph"))
         self.EditImage = self.TreeRightImageList.Add(GetBitmap("edit"))
         self.DebugInstanceImage = self.TreeRightImageList.Add(GetBitmap("debug_instance"))
         self.VariablesList.SetRightImageList(self.TreeRightImageList)
         
         self.ButtonCallBacks = {
-            self.InstanceGraphImage: _ButtonCallbacks(
-                self.GraphButtonCallback, None),
             self.EditImage: _ButtonCallbacks(
                 self.EditButtonCallback, None),
             self.DebugInstanceImage: _ButtonCallbacks(
@@ -246,12 +241,7 @@
                     text = var_infos.name
                 
                 right_images = []
-                if var_infos.var_class in ITEMS_VARIABLE:
-                    if (not self.USE_MPL and var_infos.debug and self.Debug and
-                        (self.Controller.IsOfType(var_infos.type, "ANY_NUM", True) or
-                         self.Controller.IsOfType(var_infos.type, "ANY_BIT", True))):
-                        right_images.append(self.InstanceGraphImage)
-                elif var_infos.edit:
+                if var_infos.edit:
                     right_images.append(self.EditImage)
                 
                 if var_infos.debug and self.Debug:
@@ -356,13 +346,6 @@
                     force=True,
                     graph=True)
     
-    def GraphButtonCallback(self, infos):
-        if self.InstanceChoice.GetSelection() != -1:
-            if infos.var_class in ITEMS_VARIABLE:
-                var_path = "%s.%s" % (self.InstanceChoice.GetStringSelection(), 
-                                      infos.name)
-                self.ParentWindow.OpenDebugViewer(infos.var_class, var_path, infos.type)
-    
     def ShowInstanceChoicePopup(self):
         self.InstanceChoice.SetFocusFromKbd()
         size = self.InstanceChoice.GetSize()
--- a/editors/GraphicViewer.py	Mon Oct 14 10:31:32 2013 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,543 +0,0 @@
-#!/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) 2007: 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 numpy
-import math
-
-import wx
-import wx.lib.plot as plot
-import wx.lib.buttons
-
-from graphics.GraphicCommons import MODE_SELECTION, MODE_MOTION
-from editors.DebugViewer import DebugViewer
-from editors.EditorPanel import EditorPanel
-from util.BitmapLibrary import GetBitmap
-
-colours = ['blue', 'red', 'green', 'yellow', 'orange', 'purple', 'brown', 'cyan',
-           'pink', 'grey']
-markers = ['circle', 'dot', 'square', 'triangle', 'triangle_down', 'cross', 'plus', 'circle']
-
-
-#-------------------------------------------------------------------------------
-#                       Debug Variable Graphic Viewer class
-#-------------------------------------------------------------------------------
-
-SECOND = 1000000000
-MINUTE = 60 * SECOND
-HOUR = 60 * MINUTE
-
-ZOOM_VALUES = map(lambda x:("x %.1f" % x, x), [math.sqrt(2) ** i for i in xrange(8)])
-RANGE_VALUES = map(lambda x: (str(x), x), [25 * 2 ** i for i in xrange(6)])
-TIME_RANGE_VALUES = [("%ds" % i, i * SECOND) for i in (1, 2, 5, 10, 20, 30)] + \
-                    [("%dm" % i, i * MINUTE) for i in (1, 2, 5, 10, 20, 30)] + \
-                    [("%dh" % i, i * HOUR) for i in (1, 2, 3, 6, 12, 24)]
-
-class GraphicViewer(EditorPanel, DebugViewer):
-
-    def _init_Editor(self, prnt):
-        self.Editor = wx.Panel(prnt)
-        
-        main_sizer = wx.FlexGridSizer(cols=1, hgap=0, rows=2, vgap=0)
-        main_sizer.AddGrowableCol(0)
-        main_sizer.AddGrowableRow(0)
-        
-        self.Canvas = plot.PlotCanvas(self.Editor, name='Canvas')
-        def _axisInterval(spec, lower, upper):
-            if spec == 'border':
-                if lower == upper:
-                    return lower - 0.5, upper + 0.5
-                else:
-                    border = (upper - lower) * 0.05
-                    return lower - border, upper + border
-            else:
-                return plot.PlotCanvas._axisInterval(self.Canvas, spec, lower, upper)
-        self.Canvas._axisInterval = _axisInterval
-        self.Canvas.SetYSpec('border')
-        self.Canvas.canvas.Bind(wx.EVT_LEFT_DOWN, self.OnCanvasLeftDown)
-        self.Canvas.canvas.Bind(wx.EVT_LEFT_UP, self.OnCanvasLeftUp)
-        self.Canvas.canvas.Bind(wx.EVT_MIDDLE_DOWN, self.OnCanvasMiddleDown)
-        self.Canvas.canvas.Bind(wx.EVT_MIDDLE_UP, self.OnCanvasMiddleUp)
-        self.Canvas.canvas.Bind(wx.EVT_MOTION, self.OnCanvasMotion)
-        self.Canvas.canvas.Bind(wx.EVT_SIZE, self.OnCanvasResize)
-        main_sizer.AddWindow(self.Canvas, 0, border=0, flag=wx.GROW)
-        
-        range_sizer = wx.FlexGridSizer(cols=10, hgap=5, rows=1, vgap=0)
-        range_sizer.AddGrowableCol(5)
-        range_sizer.AddGrowableRow(0)
-        main_sizer.AddSizer(range_sizer, 0, border=5, flag=wx.GROW|wx.ALL)
-        
-        range_label = wx.StaticText(self.Editor, label=_('Range:'))
-        range_sizer.AddWindow(range_label, 0, border=0, flag=wx.ALIGN_CENTER_VERTICAL)
-        
-        self.CanvasRange = wx.ComboBox(self.Editor, 
-              size=wx.Size(100, 28), style=wx.CB_READONLY)
-        self.Bind(wx.EVT_COMBOBOX, self.OnRangeChanged, self.CanvasRange)
-        range_sizer.AddWindow(self.CanvasRange, 0, border=0, flag=wx.ALIGN_CENTER_VERTICAL)
-        
-        zoom_label = wx.StaticText(self.Editor, label=_('Zoom:'))
-        range_sizer.AddWindow(zoom_label, 0, border=0, flag=wx.ALIGN_CENTER_VERTICAL)
-        
-        self.CanvasZoom = wx.ComboBox(self.Editor, 
-              size=wx.Size(70, 28), style=wx.CB_READONLY)
-        self.Bind(wx.EVT_COMBOBOX, self.OnZoomChanged, self.CanvasZoom)
-        range_sizer.AddWindow(self.CanvasZoom, 0, border=0, flag=wx.ALIGN_CENTER_VERTICAL)
-        
-        position_label = wx.StaticText(self.Editor, label=_('Position:'))
-        range_sizer.AddWindow(position_label, 0, border=0, flag=wx.ALIGN_CENTER_VERTICAL)
-        
-        self.CanvasPosition = wx.ScrollBar(self.Editor, 
-              size=wx.Size(0, 16), style=wx.SB_HORIZONTAL)
-        self.CanvasPosition.SetScrollbar(0, 10, 100, 10)
-        self.CanvasPosition.Bind(wx.EVT_SCROLL_THUMBTRACK, 
-              self.OnPositionChanging, self.CanvasPosition)
-        self.CanvasPosition.Bind(wx.EVT_SCROLL_LINEUP, 
-              self.OnPositionChanging, self.CanvasPosition)
-        self.CanvasPosition.Bind(wx.EVT_SCROLL_LINEDOWN, 
-              self.OnPositionChanging, self.CanvasPosition)
-        self.CanvasPosition.Bind(wx.EVT_SCROLL_PAGEUP, 
-              self.OnPositionChanging, self.CanvasPosition)
-        self.CanvasPosition.Bind(wx.EVT_SCROLL_PAGEDOWN, 
-              self.OnPositionChanging, self.CanvasPosition)
-        range_sizer.AddWindow(self.CanvasPosition, 0, border=5, flag=wx.GROW|wx.ALL)
-        
-        self.ResetButton = wx.lib.buttons.GenBitmapButton(self.Editor, 
-              bitmap=GetBitmap("reset"), size=wx.Size(28, 28), style=wx.NO_BORDER)
-        self.ResetButton.SetToolTipString(_("Clear the graph values"))
-        self.Bind(wx.EVT_BUTTON, self.OnResetButton, self.ResetButton)
-        range_sizer.AddWindow(self.ResetButton, 0, border=0, flag=0)
-        
-        self.CurrentButton = wx.lib.buttons.GenBitmapButton(self.Editor, 
-              bitmap=GetBitmap("current"), size=wx.Size(28, 28), style=wx.NO_BORDER)
-        self.CurrentButton.SetToolTipString(_("Go to current value"))
-        self.Bind(wx.EVT_BUTTON, self.OnCurrentButton, self.CurrentButton)
-        range_sizer.AddWindow(self.CurrentButton, 0, border=0, flag=0)
-        
-        self.ResetZoomOffsetButton = wx.lib.buttons.GenBitmapButton(self.Editor, 
-              bitmap=GetBitmap("fit"), size=wx.Size(28, 28), style=wx.NO_BORDER)
-        self.ResetZoomOffsetButton.SetToolTipString(_("Reset zoom and offset"))
-        self.Bind(wx.EVT_BUTTON, self.OnResetZoomOffsetButton, 
-              self.ResetZoomOffsetButton)
-        range_sizer.AddWindow(self.ResetZoomOffsetButton, 0, border=0, flag=0)
-        
-        self.ExportGraphButton = wx.lib.buttons.GenBitmapButton(self.Editor, 
-              bitmap=GetBitmap("export_graph"), size=wx.Size(28, 28), style=wx.NO_BORDER)
-        self.ExportGraphButton.SetToolTipString(_("Export graph values to clipboard"))
-        self.Bind(wx.EVT_BUTTON, self.OnExportGraphButtonClick, 
-                self.ExportGraphButton)
-        range_sizer.AddWindow(self.ExportGraphButton, 0, border=0, flag=0)
-        
-        self.Editor.SetSizer(main_sizer)
-
-        self.Editor.Bind(wx.EVT_MOUSEWHEEL, self.OnCanvasMouseWheel)
-
-    def __init__(self, parent, window, producer, instancepath = ""):
-        EditorPanel.__init__(self, parent, "", window, None)
-        DebugViewer.__init__(self, producer, True, False)
-        
-        self.InstancePath = instancepath
-        self.RangeValues = None
-        self.CursorIdx = None
-        self.LastCursor = None
-        self.CurrentMousePos = None
-        self.CurrentMotionValue = None
-        self.Dragging = False
-        
-        # Initialize Viewer mode to Selection mode
-        self.Mode = MODE_SELECTION
-        
-        self.Data = numpy.array([]).reshape(0, 2)
-        self.StartTick = 0
-        self.StartIdx = 0
-        self.EndIdx = 0
-        self.MinValue = None
-        self.MaxValue = None
-        self.YCenter = 0
-        self.CurrentZoom = 1.0
-        self.Fixed = False
-        self.Ticktime = self.DataProducer.GetTicktime()
-        self.RefreshCanvasRange()
-        
-        for zoom_txt, zoom in ZOOM_VALUES:
-            self.CanvasZoom.Append(zoom_txt)
-        self.CanvasZoom.SetSelection(0)
-        
-        self.AddDataConsumer(self.InstancePath.upper(), self)
-    
-    def __del__(self):
-        DebugViewer.__del__(self)
-        self.RemoveDataConsumer(self)
-    
-    def GetTitle(self):
-        if len(self.InstancePath) > 15:
-            return "..." + self.InstancePath[-12:]
-        return self.InstancePath
-    
-    # Changes Viewer mode
-    def SetMode(self, mode):
-        if self.Mode != mode or mode == MODE_SELECTION:    
-            if self.Mode == MODE_MOTION:
-                wx.CallAfter(self.Canvas.canvas.SetCursor, wx.NullCursor)
-            self.Mode = mode
-        if self.Mode == MODE_MOTION:
-            wx.CallAfter(self.Canvas.canvas.SetCursor, wx.StockCursor(wx.CURSOR_HAND))
-        
-    def ResetView(self, register=False):
-        self.Data = numpy.array([]).reshape(0, 2)
-        self.StartTick = 0
-        self.StartIdx = 0
-        self.EndIdx = 0
-        self.MinValue = None
-        self.MaxValue = None
-        self.CursorIdx = None
-        self.Fixed = False
-        self.Ticktime = self.DataProducer.GetTicktime()
-        if register:
-            self.AddDataConsumer(self.InstancePath.upper(), self)
-        self.ResetLastCursor()
-        self.RefreshCanvasRange()
-        self.RefreshView()
-    
-    def RefreshNewData(self, *args, **kwargs):
-        self.RefreshView(*args, **kwargs)
-        DebugViewer.RefreshNewData(self)
-    
-    def GetNearestData(self, tick, adjust):
-        ticks = self.Data[:, 0]
-        new_cursor = numpy.argmin(abs(ticks - tick))
-        if adjust == -1 and ticks[new_cursor] > tick and new_cursor > 0:
-            new_cursor -= 1
-        elif adjust == 1 and ticks[new_cursor] < tick and new_cursor < len(ticks):
-            new_cursor += 1
-        return new_cursor
-    
-    def GetBounds(self):
-        if self.StartIdx is None or self.EndIdx is None:
-            self.StartIdx = self.GetNearestData(self.StartTick, -1)
-            self.EndIdx = self.GetNearestData(self.StartTick + self.CurrentRange, 1)
-    
-    def ResetBounds(self):
-        self.StartIdx = None
-        self.EndIdx = None
-    
-    def RefreshCanvasRange(self):
-        if self.Ticktime == 0 and self.RangeValues != RANGE_VALUES:
-            self.RangeValues = RANGE_VALUES
-            self.CanvasRange.Clear()
-            for text, value in RANGE_VALUES:
-                self.CanvasRange.Append(text)
-            self.CanvasRange.SetStringSelection(RANGE_VALUES[0][0])
-            self.CurrentRange = RANGE_VALUES[0][1]
-        elif self.RangeValues != TIME_RANGE_VALUES:
-            self.RangeValues = TIME_RANGE_VALUES
-            self.CanvasRange.Clear()
-            for text, value in TIME_RANGE_VALUES:
-                self.CanvasRange.Append(text)
-            self.CanvasRange.SetStringSelection(TIME_RANGE_VALUES[0][0])
-            self.CurrentRange = TIME_RANGE_VALUES[0][1] / self.Ticktime
-        
-    def RefreshView(self, force=False):
-        self.Freeze()
-        if force or not self.Fixed or (len(self.Data) > 0 and self.StartTick + self.CurrentRange > self.Data[-1, 0]):
-            if (self.MinValue is not None and 
-                self.MaxValue is not None and 
-                self.MinValue != self.MaxValue):
-                Yrange = float(self.MaxValue - self.MinValue) / self.CurrentZoom
-            else:
-                Yrange = 2. / self.CurrentZoom
-            
-            if not force and not self.Fixed and len(self.Data) > 0:
-                self.YCenter = max(self.Data[-1, 1] - Yrange / 2, 
-                               min(self.YCenter, 
-                                   self.Data[-1, 1] + Yrange / 2))
-            
-            var_name = self.InstancePath.split(".")[-1]
-            
-            self.GetBounds()
-            self.VariableGraphic = plot.PolyLine(self.Data[self.StartIdx:self.EndIdx + 1], 
-                                                 legend=var_name, colour=colours[0])
-            self.GraphicsObject = plot.PlotGraphics([self.VariableGraphic], _("%s Graphics") % var_name, _("Tick"), _("Values"))
-            self.Canvas.Draw(self.GraphicsObject, 
-                             xAxis=(self.StartTick, self.StartTick + self.CurrentRange),
-                             yAxis=(self.YCenter - Yrange * 1.1 / 2., self.YCenter + Yrange * 1.1 / 2.))
-        
-            # Reset and draw cursor 
-            self.ResetLastCursor()
-            self.RefreshCursor()
-        
-        self.RefreshScrollBar()
-        
-        self.Thaw()
-    
-    def GetInstancePath(self):
-        return self.InstancePath
-    
-    def IsViewing(self, tagname):
-        return self.InstancePath == tagname
-    
-    def NewValue(self, tick, value, forced=False):
-        value = {True:1., False:0.}.get(value, float(value))
-        self.Data = numpy.append(self.Data, [[float(tick), value]], axis=0)
-        if self.MinValue is None:
-            self.MinValue = value
-        else:
-            self.MinValue = min(self.MinValue, value)
-        if self.MaxValue is None:
-            self.MaxValue = value
-        else:
-            self.MaxValue = max(self.MaxValue, value)
-        if not self.Fixed or tick < self.StartTick + self.CurrentRange:
-            self.GetBounds()
-            while int(self.Data[self.StartIdx, 0]) < tick - self.CurrentRange:
-                self.StartIdx += 1
-            self.EndIdx += 1
-            self.StartTick = self.Data[self.StartIdx, 0]
-        self.NewDataAvailable(None)
-    
-    def RefreshScrollBar(self):
-        if len(self.Data) > 0:
-            self.GetBounds()
-            pos = int(self.Data[self.StartIdx, 0] - self.Data[0, 0])
-            range = int(self.Data[-1, 0] - self.Data[0, 0])
-        else:
-            pos = 0
-            range = 0
-        self.CanvasPosition.SetScrollbar(pos, self.CurrentRange, range, self.CurrentRange)
-
-    def RefreshRange(self):
-        if len(self.Data) > 0:
-            if self.Fixed and self.Data[-1, 0] - self.Data[0, 0] < self.CurrentRange:
-                self.Fixed = False
-            self.ResetBounds()
-            if self.Fixed:
-                self.StartTick = min(self.StartTick, self.Data[-1, 0] - self.CurrentRange)
-            else:
-                self.StartTick = max(self.Data[0, 0], self.Data[-1, 0] - self.CurrentRange)
-        self.RefreshView(True)
-
-    def OnRangeChanged(self, event):
-        try:
-            if self.Ticktime == 0:
-                self.CurrentRange = self.RangeValues[self.CanvasRange.GetSelection()][1]
-            else:
-                self.CurrentRange = self.RangeValues[self.CanvasRange.GetSelection()][1] / self.Ticktime
-        except ValueError, e:
-            self.CanvasRange.SetValue(str(self.CurrentRange))
-        wx.CallAfter(self.RefreshRange)
-        event.Skip()
-    
-    def OnZoomChanged(self, event):
-        self.CurrentZoom = ZOOM_VALUES[self.CanvasZoom.GetSelection()][1]
-        wx.CallAfter(self.RefreshView, True)
-        event.Skip()
-    
-    def OnPositionChanging(self, event):
-        if len(self.Data) > 0:
-            self.ResetBounds()
-            self.StartTick = self.Data[0, 0] + event.GetPosition()
-            self.Fixed = True
-            self.NewDataAvailable(None, True)
-        event.Skip()
-
-    def OnResetButton(self, event):
-        self.Fixed = False
-        self.ResetView()
-        event.Skip()
-
-    def OnCurrentButton(self, event):
-        if len(self.Data) > 0:
-            self.ResetBounds()
-            self.StartTick = max(self.Data[0, 0], self.Data[-1, 0] - self.CurrentRange)
-            self.Fixed = False
-            self.NewDataAvailable(None, True)
-        event.Skip()
-    
-    def OnResetZoomOffsetButton(self, event):
-        if len(self.Data) > 0:
-            self.YCenter = (self.MaxValue + self.MinValue) / 2
-        else:
-            self.YCenter = 0.0
-        self.CurrentZoom = 1.0
-        self.CanvasZoom.SetSelection(0)
-        wx.CallAfter(self.RefreshView, True)
-        event.Skip()
-    
-    def OnExportGraphButtonClick(self, event):
-        data_copy = self.Data[:]
-        text = "tick;%s;\n" % self.InstancePath
-        for tick, value in data_copy:
-            text += "%d;%.3f;\n" % (tick, value)
-        self.ParentWindow.SetCopyBuffer(text)
-        event.Skip()
-
-    def OnCanvasLeftDown(self, event):
-        self.Fixed = True
-        self.Canvas.canvas.CaptureMouse()
-        if len(self.Data) > 0:
-            if self.Mode == MODE_SELECTION:
-                self.Dragging = True
-                pos = self.Canvas.PositionScreenToUser(event.GetPosition())
-                self.CursorIdx = self.GetNearestData(pos[0], -1)
-                self.RefreshCursor()
-            elif self.Mode == MODE_MOTION:
-                self.GetBounds()
-                self.CurrentMousePos = event.GetPosition()
-                self.CurrentMotionValue = self.Data[self.StartIdx, 0]
-        event.Skip()
-    
-    def OnCanvasLeftUp(self, event):
-        self.Dragging = False
-        if self.Mode == MODE_MOTION:
-            self.CurrentMousePos = None
-            self.CurrentMotionValue = None
-        if self.Canvas.canvas.HasCapture():
-            self.Canvas.canvas.ReleaseMouse()
-        event.Skip()
-    
-    def OnCanvasMiddleDown(self, event):
-        self.Fixed = True
-        self.Canvas.canvas.CaptureMouse()
-        if len(self.Data) > 0:
-            self.GetBounds()
-            self.CurrentMousePos = event.GetPosition()
-            self.CurrentMotionValue = self.Data[self.StartIdx, 0]
-        event.Skip()
-        
-    def OnCanvasMiddleUp(self, event):
-        self.CurrentMousePos = None
-        self.CurrentMotionValue = None
-        if self.Canvas.canvas.HasCapture():
-            self.Canvas.canvas.ReleaseMouse()
-        event.Skip()
-        
-    def OnCanvasMotion(self, event):
-        if self.Mode == MODE_SELECTION and self.Dragging:
-            pos = self.Canvas.PositionScreenToUser(event.GetPosition())
-            graphics, xAxis, yAxis = self.Canvas.last_draw
-            self.CursorIdx = self.GetNearestData(max(xAxis[0], min(pos[0], xAxis[1])), -1)
-            self.RefreshCursor()
-        elif self.CurrentMousePos is not None and len(self.Data) > 0:
-            oldpos = self.Canvas.PositionScreenToUser(self.CurrentMousePos)
-            newpos = self.Canvas.PositionScreenToUser(event.GetPosition())
-            self.CurrentMotionValue += oldpos[0] - newpos[0]
-            self.YCenter += oldpos[1] - newpos[1]
-            self.ResetBounds()
-            self.StartTick = max(self.Data[0, 0], min(self.CurrentMotionValue, self.Data[-1, 0] - self.CurrentRange))
-            self.CurrentMousePos = event.GetPosition()
-            self.NewDataAvailable(None, True)
-        event.Skip()
-
-    def OnCanvasMouseWheel(self, event):
-        if self.CurrentMousePos is None:
-            rotation = event.GetWheelRotation() / event.GetWheelDelta()
-            if event.ShiftDown():
-                current = self.CanvasRange.GetSelection()
-                new = max(0, min(current - rotation, len(self.RangeValues) - 1))
-                if new != current:
-                    if self.Ticktime == 0:
-                        self.CurrentRange = self.RangeValues[new][1]
-                    else:
-                        self.CurrentRange = self.RangeValues[new][1] / self.Ticktime
-                    self.CanvasRange.SetStringSelection(self.RangeValues[new][0])
-                    wx.CallAfter(self.RefreshRange)
-            else:
-                current = self.CanvasZoom.GetSelection()
-                new = max(0, min(current + rotation, len(ZOOM_VALUES) - 1))
-                if new != current:
-                    self.CurrentZoom = ZOOM_VALUES[new][1]
-                    self.CanvasZoom.SetStringSelection(ZOOM_VALUES[new][0])
-                    wx.CallAfter(self.RefreshView, True)
-        event.Skip()
-
-    def OnCanvasResize(self, event):
-        self.ResetLastCursor()
-        wx.CallAfter(self.RefreshCursor)
-        event.Skip()
-
-    ## Reset the last cursor
-    def ResetLastCursor(self):
-        self.LastCursor = None
-
-    ## Draw the cursor on graphic
-    #  @param dc The draw canvas
-    #  @param cursor The cursor parameters
-    def DrawCursor(self, dc, cursor, value):
-        if self.StartTick <= cursor <= self.StartTick + self.CurrentRange:
-            # Prepare temporary dc for drawing
-            width = self.Canvas._Buffer.GetWidth()
-            height = self.Canvas._Buffer.GetHeight()
-            tmp_Buffer = wx.EmptyBitmap(width, height)
-            dcs = wx.MemoryDC()
-            dcs.SelectObject(tmp_Buffer)
-            dcs.Clear()
-            dcs.BeginDrawing()
-            
-            dcs.SetPen(wx.Pen(wx.RED))
-            dcs.SetBrush(wx.Brush(wx.RED, wx.SOLID))
-            dcs.SetFont(self.Canvas._getFont(self.Canvas._fontSizeAxis))
-            
-            # Calculate clipping region
-            graphics, xAxis, yAxis = self.Canvas.last_draw
-            p1 = numpy.array([xAxis[0], yAxis[0]])
-            p2 = numpy.array([xAxis[1], yAxis[1]])
-            cx, cy, cwidth, cheight = self.Canvas._point2ClientCoord(p1, p2)
-            
-            px, py = self.Canvas.PositionUserToScreen((float(cursor), 0.))
-            
-            # Draw line cross drawing for diaplaying time cursor
-            dcs.DrawLine(px, cy + 1, px, cy + cheight - 1)
-            
-            lines = ("X:%d\nY:%f" % (cursor, value)).splitlines()
-            
-            wtext = 0
-            for line in lines:
-                w, h = dcs.GetTextExtent(line)
-                wtext = max(wtext, w)
-            
-            offset = 0
-            for line in lines:
-                # Draw time cursor date
-                dcs.DrawText(line, min(px + 3, cx + cwidth - wtext), cy + 3 + offset)
-                w, h = dcs.GetTextExtent(line)
-                offset += h
-            
-            dcs.EndDrawing()
-    
-            #this will erase if called twice
-            dc.Blit(0, 0, width, height, dcs, 0, 0, wx.EQUIV)  #(NOT src) XOR dst
-    
-    ## Refresh the variable cursor.
-    #  @param dc The draw canvas
-    def RefreshCursor(self, dc=None):
-        if self:
-            if dc is None:
-                dc = wx.BufferedDC(wx.ClientDC(self.Canvas.canvas), self.Canvas._Buffer)
-            
-            # Erase previous time cursor if drawn
-            if self.LastCursor is not None:
-                self.DrawCursor(dc, *self.LastCursor)
-            
-            # Draw new time cursor
-            if self.CursorIdx is not None:
-                self.LastCursor = self.Data[self.CursorIdx]
-                self.DrawCursor(dc, *self.LastCursor)