GraphicViewer.py
author laurent
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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#This file is part of PLCOpenEditor, a library implementing an IEC 61131-3 editor
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#based on the plcopen standard. 
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#
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#Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
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#
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#See COPYING file for copyrights details.
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#
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#This library is free software; you can redistribute it and/or
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#modify it under the terms of the GNU General Public
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#License as published by the Free Software Foundation; either
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#version 2.1 of the License, or (at your option) any later version.
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#
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#This library is distributed in the hope that it will be useful,
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#but WITHOUT ANY WARRANTY; without even the implied warranty of
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#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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#General Public License for more details.
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#
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#You should have received a copy of the GNU General Public
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#License along with this library; if not, write to the Free Software
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#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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import wx
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import wx.lib.plot as plot
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from graphics.GraphicCommons import DebugViewer
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from controls import EditorPanel
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colours = ['blue', 'red', 'green', 'yellow', 'orange', 'purple', 'brown', 'cyan',
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           'pink', 'grey']
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markers = ['circle', 'dot', 'square', 'triangle', 'triangle_down', 'cross', 'plus', 'circle']
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#-------------------------------------------------------------------------------
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#                       Debug Variable Graphic Viewer class
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#-------------------------------------------------------------------------------
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SECOND = 1000000000
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MINUTE = 60 * SECOND
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HOUR = 60 * MINUTE
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RANGE_VALUES = [(str(25 * 2 ** i), 25 * 2 ** i) for i in xrange(6)]
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TIME_RANGE_VALUES = [("%ds" % i, i * SECOND) for i in (10, 20, 30)] + \
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                    [("%dm" % i, i * MINUTE) for i in (1, 2, 5, 10, 20, 30)] + \
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                    [("%dh" % i, i * HOUR) for i in (1, 2, 3, 6, 12, 24)]
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[ID_GRAPHICVIEWER, ID_GRAPHICVIEWERCANVAS,
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 ID_GRAPHICVIEWERCANVASRANGE, ID_GRAPHICVIEWERCANVASPOSITION,
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 ID_GRAPHICVIEWERRESETBUTTON, ID_GRAPHICVIEWERCURRENTBUTTON, 
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 ID_GRAPHICVIEWERSTATICTEXT1, ID_GRAPHICVIEWERSTATICTEXT2,
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] = [wx.NewId() for _init_ctrls in range(8)]
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class GraphicViewer(EditorPanel, DebugViewer):
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    def _init_coll_MainGridSizer_Items(self, parent):
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        # generated method, don't edit
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        parent.AddWindow(self.Canvas, 0, border=0, flag=wx.GROW)
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        parent.AddSizer(self.RangeSizer, 0, border=0, flag=wx.GROW)
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    def _init_coll_MainGridSizer_Growables(self, parent):
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        # generated method, don't edit
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        parent.AddGrowableCol(0)
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        parent.AddGrowableRow(0)
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    def _init_coll_RangeSizer_Items(self, parent):
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        # generated method, don't edit
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        parent.AddWindow(self.staticbox1, 0, border=5, flag=wx.ALIGN_CENTER_VERTICAL|wx.ALL)
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        parent.AddWindow(self.CanvasRange, 0, border=5, flag=wx.ALL)
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        parent.AddWindow(self.staticText2, 0, border=5, flag=wx.ALIGN_CENTER_VERTICAL|wx.ALL)
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        parent.AddWindow(self.CanvasPosition, 0, border=5, flag=wx.GROW|wx.ALL)
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        parent.AddWindow(self.ResetButton, 0, border=5, flag=wx.ALL)
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        parent.AddWindow(self.CurrentButton, 0, border=5, flag=wx.ALL)
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    def _init_coll_RangeSizer_Growables(self, parent):
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        # generated method, don't edit
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        parent.AddGrowableCol(3)
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        parent.AddGrowableRow(0)
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    def _init_sizers(self):
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        # generated method, don't edit
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        self.MainGridSizer = wx.FlexGridSizer(cols=1, hgap=0, rows=2, vgap=0)
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        self.RangeSizer = wx.FlexGridSizer(cols=6, hgap=0, rows=1, vgap=0)
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        self._init_coll_MainGridSizer_Items(self.MainGridSizer)
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        self._init_coll_MainGridSizer_Growables(self.MainGridSizer)
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        self._init_coll_RangeSizer_Items(self.RangeSizer)
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        self._init_coll_RangeSizer_Growables(self.RangeSizer)
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        self.Editor.SetSizer(self.MainGridSizer)
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    def _init_Editor(self, prnt):
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        self.Editor = wx.Panel(prnt, ID_GRAPHICVIEWER, wx.DefaultPosition, 
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                 wx.DefaultSize, 0)
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        self.Canvas = plot.PlotCanvas(id=ID_GRAPHICVIEWERCANVAS, 
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              name='Canvas', parent=self.Editor, pos=wx.Point(0, 0),
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              size=wx.Size(0, 0), style=0)
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        def _axisInterval(spec, lower, upper):
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            if spec == 'border':
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                if lower == upper:
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                    return lower - 0.5, upper + 0.5
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                else:
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                    border = (upper - lower) * 0.05
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                    return lower - border, upper + border
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            else:
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                return plot.PlotCanvas._axisInterval(self.Canvas, spec, lower, upper)
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        self.Canvas._axisInterval = _axisInterval
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        self.Canvas.SetYSpec('border')
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        self.staticbox1 = wx.StaticText(id=ID_GRAPHICVIEWERSTATICTEXT1,
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              label=_('Range:'), name='staticText1', parent=self.Editor,
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              pos=wx.Point(0, 0), size=wx.DefaultSize, style=0)
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        self.CanvasRange = wx.ComboBox(id=ID_GRAPHICVIEWERCANVASRANGE,
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              name='CanvasRange', parent=self.Editor, pos=wx.Point(0, 0),
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              size=wx.Size(100, 28), style=0)
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        self.Bind(wx.EVT_COMBOBOX, self.OnRangeChanged, id=ID_GRAPHICVIEWERCANVASRANGE)
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        self.Bind(wx.EVT_TEXT_ENTER, self.OnRangeChanged, id=ID_GRAPHICVIEWERCANVASRANGE)
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        self.staticText2 = wx.StaticText(id=ID_GRAPHICVIEWERSTATICTEXT2,
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              label=_('Position:'), name='staticText2', parent=self.Editor,
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              pos=wx.Point(0, 0), size=wx.DefaultSize, style=0)
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        self.CanvasPosition = wx.ScrollBar(id=ID_GRAPHICVIEWERCANVASPOSITION,
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              name='Position', parent=self.Editor, pos=wx.Point(0, 0),
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              size=wx.Size(0, 16), style=wx.SB_HORIZONTAL)
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        self.CanvasPosition.SetScrollbar(0, 10, 100, 10)
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        self.CanvasPosition.Bind(wx.EVT_SCROLL_THUMBTRACK, self.OnPositionChanging, 
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              id = ID_GRAPHICVIEWERCANVASPOSITION)
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        self.CanvasPosition.Bind(wx.EVT_SCROLL_LINEUP, self.OnPositionChanging, 
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              id = ID_GRAPHICVIEWERCANVASPOSITION)
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        self.CanvasPosition.Bind(wx.EVT_SCROLL_LINEDOWN, self.OnPositionChanging, 
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              id = ID_GRAPHICVIEWERCANVASPOSITION)
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        self.CanvasPosition.Bind(wx.EVT_SCROLL_PAGEUP, self.OnPositionChanging, 
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              id = ID_GRAPHICVIEWERCANVASPOSITION)
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        self.CanvasPosition.Bind(wx.EVT_SCROLL_PAGEDOWN, self.OnPositionChanging, 
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              id = ID_GRAPHICVIEWERCANVASPOSITION)
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        self.ResetButton = wx.Button(id=ID_GRAPHICVIEWERRESETBUTTON, label='Reset',
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              name='ResetButton', parent=self.Editor, pos=wx.Point(0, 0),
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              size=wx.Size(72, 24), style=0)
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        self.Bind(wx.EVT_BUTTON, self.OnResetButton, id=ID_GRAPHICVIEWERRESETBUTTON)
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        self.CurrentButton = wx.Button(id=ID_GRAPHICVIEWERCURRENTBUTTON, label='Current',
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              name='CurrentButton', parent=self.Editor, pos=wx.Point(0, 0),
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              size=wx.Size(72, 24), style=0)
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        self.Bind(wx.EVT_BUTTON, self.OnCurrentButton, id=ID_GRAPHICVIEWERCURRENTBUTTON)
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        self._init_sizers()
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    def __init__(self, parent, window, producer, instancepath = ""):
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        EditorPanel.__init__(self, parent, "", window, None)
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        DebugViewer.__init__(self, producer, True, False)
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        self.InstancePath = instancepath
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        self.RangeValues = None
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        self.Datas = []
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        self.CurrentValue = 0
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        self.Ticktime = self.DataProducer.GetTicktime()
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        self.RefreshCanvasRange()
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        self.AddDataConsumer(self.InstancePath.upper(), self)
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    def __del__(self):
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        DebugViewer.__del__(self)
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        self.RemoveDataConsumer(self)
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    def GetTitle(self):
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        if len(self.InstancePath) > 15:
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            return "..." + self.InstancePath[-12:]
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        return self.InstancePath
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    def ResetView(self):
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        self.Datas = []
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        self.CurrentValue = 0
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        self.Ticktime = self.DataProducer.GetTicktime()
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        self.RefreshCanvasRange()
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        self.RefreshView()
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    def RefreshNewData(self):
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        self.RefreshView(False)
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        DebugViewer.RefreshNewData(self)
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    def RefreshCanvasRange(self):
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        if self.Ticktime == 0 and self.RangeValues != RANGE_VALUES:
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            self.RangeValues = RANGE_VALUES
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            self.RangeValues_dict = dict(RANGE_VALUES)
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            self.CanvasRange.Clear()
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            for text, value in RANGE_VALUES:
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                self.CanvasRange.Append(text)
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            self.CanvasRange.SetStringSelection(RANGE_VALUES[0][0])
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            self.CurrentRange = RANGE_VALUES[0][1]
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        elif self.RangeValues != TIME_RANGE_VALUES:
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            self.RangeValues = TIME_RANGE_VALUES
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            self.RangeValues_dict = dict(TIME_RANGE_VALUES)
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            self.CanvasRange.Clear()
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            for text, value in TIME_RANGE_VALUES:
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                self.CanvasRange.Append(text)
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            self.CanvasRange.SetStringSelection(TIME_RANGE_VALUES[0][0])
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            self.CurrentRange = TIME_RANGE_VALUES[0][1] / self.Ticktime
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    def RefreshView(self, force=True):
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        self.Freeze()
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        if force or self.CurrentValue + self.CurrentRange == len(self.Datas) or self.CurrentValue + len(self.Datas) < self.CurrentRange:
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            var_name = self.InstancePath.split(".")[-1]
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            self.VariableGraphic = plot.PolyLine(self.Datas[self.CurrentValue:self.CurrentValue + self.CurrentRange], 
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                                                 legend=var_name, colour=colours[0])
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            self.GraphicsObject = plot.PlotGraphics([self.VariableGraphic], _("%s Graphics") % var_name, _("Tick"), _("Values"))
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            datas_length = len(self.Datas)
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            if datas_length > 1:
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                start = self.Datas[self.CurrentValue][0]
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                if self.CurrentValue + self.CurrentRange > datas_length:
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                    end = start + (self.Datas[datas_length - 1][0] - start) * self.CurrentRange / (datas_length - self.CurrentValue - 1)
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                else:
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                    end = self.Datas[self.CurrentValue + self.CurrentRange - 1][0]
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            else:
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                start = 0.
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                end = 25.
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            self.Canvas.Draw(self.GraphicsObject, xAxis=(start, end))
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        self.RefreshScrollBar()
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        self.Thaw()
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   225
    
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    def GetInstancePath(self):
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        return self.InstancePath
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    def IsViewing(self, tagname):
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        return self.InstancePath == tagname
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   231
    
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    def NewValue(self, tick, value, forced=False):
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        self.Datas.append((float(tick), {True:1., False:0.}.get(value, float(value))))
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        if self.CurrentValue + self.CurrentRange == len(self.Datas) - 1:
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            self.CurrentValue += 1
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        self.NewDataAvailable()
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    def RefreshScrollBar(self):
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   239
        self.CanvasPosition.SetScrollbar(self.CurrentValue, self.CurrentRange, len(self.Datas), self.CurrentRange)
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    def OnRangeChanged(self, event):
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        old_range = self.CurrentRange
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        try:
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            if self.Ticktime == 0:
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                self.CurrentRange = self.RangeValues_dict[self.CanvasRange.GetValue()]
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            else:
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                self.CurrentRange = self.RangeValues_dict[self.CanvasRange.GetValue()] / self.Ticktime
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        except ValueError, e:
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   249
            self.CanvasRange.SetValue(str(self.CurrentRange))
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        self.CurrentValue = max(0, min(self.CurrentValue + old_range - self.CurrentRange, 
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                                       len(self.Datas) - self.CurrentRange))
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        self.RefreshView()
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        event.Skip()
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   254
    
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    def OnPositionChanging(self, event):
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   256
        self.CurrentValue = event.GetPosition()
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        self.RefreshView()
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        event.Skip()
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    def OnResetButton(self, event):
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        self.ResetView()
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        event.Skip()
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    def OnCurrentButton(self, event):
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   265
        self.CurrentValue = max(0, len(self.Datas) - self.CurrentRange)
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   266
        self.RefreshView()
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        event.Skip()
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