pymca 4.5.0-4 / usr / share / pyshared / PyMca / EnergyTable.py

#/*##########################################################################
# Copyright (C) 2004-2010 European Synchrotron Radiation Facility
#
# This file is part of the PyMCA X-ray Fluorescence Toolkit developed at
# the ESRF by the Beamline Instrumentation Software Support (BLISS) group.
#
# This toolkit 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 of the License, or (at your option) 
# any later version.
#
# PyMCA 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
# PyMCA; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
# Suite 330, Boston, MA 02111-1307, USA.
#
# PyMCA follows the dual licensing model of Trolltech's Qt and Riverbank's PyQt
# and cannot be used as a free plugin for a non-free program. 
#
# Please contact the ESRF industrial unit (industry@esrf.fr) if this license 
# is a problem for you.
#############################################################################*/
__revision__ = "$Revision: 1.16 $"
__author__="V.A. Sole - ESRF BLISS Group"
import sys
import numpy.oldnumeric as Numeric
import QXTube
import os
import PyMcaDirs
import PyMca_Icons as Icons
qt = QXTube.qt
QTVERSION = qt.qVersion()
if QTVERSION < '3.0.0':
    import Myqttable as qttable
elif QTVERSION < '4.0.0':
    import qttable

DEBUG=0
class EnergyTab(qt.QWidget):
    def __init__(self,parent=None, name="Energy Tab"):
        qt.QWidget.__init__(self, parent)
        layout = qt.QVBoxLayout(self)
        layout.setMargin(0)
        layout.setSpacing(4)
        hbox = qt.QWidget(self)
        self.hbox = qt.QHBoxLayout(hbox)
        self.hbox.setMargin(0)
        self.hbox.setSpacing(0)
        self.tube = QXTube.QXTube(hbox)
        self.table  = EnergyTable(hbox)
        self.hbox.addWidget(self.tube)
        self.hbox.addWidget(self.table)
        self.tube.plot()
        self.tube.hide()
        self.outputFilter = None
        self.inputDir = None
        self.outputDir = None

        self.__calculating = 0
        if QTVERSION < '4.0.0':
            self.tubeButton = qt.QPushButton(self)
            self.tubeButton.setText("Open X-Ray Tube Setup")        
            layout.addWidget(self.tubeButton)
            layout.addWidget(hbox)
            self.connect(self.tubeButton,
                         qt.SIGNAL("clicked()"),
                         self.tubeButtonClicked)

            self.connect(self.tube, qt.PYSIGNAL("QXTubeSignal"), self.__tubeUpdated)
        else:
            self.tubeActionsBox = qt.QWidget(self)
            actionsLayout = qt.QHBoxLayout(self.tubeActionsBox)
            actionsLayout.setMargin(0)
            actionsLayout.setSpacing(0)
            #tube setup button
            self.tubeButton = qt.QPushButton(self.tubeActionsBox)
            self.tubeButton.setText("Open X-Ray Tube Setup")        
            actionsLayout.addWidget(self.tubeButton, 1)
            #load new energy table
            self.tubeLoadButton = qt.QPushButton(self.tubeActionsBox)
            self.tubeLoadButton.setText("Load Table")        
            actionsLayout.addWidget(self.tubeLoadButton, 0)            
            #save seen energy table
            self.tubeSaveButton = qt.QPushButton(self.tubeActionsBox)
            self.tubeSaveButton.setText("Save Table")        
            actionsLayout.addWidget(self.tubeSaveButton, 0)

            layout.addWidget(self.tubeActionsBox)
            layout.addWidget(hbox)
            self.connect(self.tubeButton,
                         qt.SIGNAL("clicked()"),
                         self.tubeButtonClicked)
            self.connect(self.tubeLoadButton,
                         qt.SIGNAL("clicked()"),
                         self.loadButtonClicked)            
            self.connect(self.tubeSaveButton,
                         qt.SIGNAL("clicked()"),
                         self.saveButtonClicked)
            self.connect(self.tube, qt.SIGNAL("QXTubeSignal"), self.__tubeUpdated)

    def tubeButtonClicked(self):
        if self.tube.isHidden():
            self.tube.show()
            self.tubeButton.setText("Close X-Ray Tube Setup")
            self.tubeLoadButton.hide()
            self.tubeSaveButton.hide()
        else:
            self.tube.hide()
            self.tubeLoadButton.show()
            self.tubeSaveButton.show()
            self.tubeButton.setText("Open X-Ray Tube Setup")

    def loadButtonClicked(self):
        if self.inputDir is None:
            if self.inputDir is not None:
                self.inputDir = self.outputDir
            else:
                self.inputDir = PyMcaDirs.inputDir
        wdir = self.inputDir
        if not os.path.exists(wdir):
            wdir = os.getcwd()
        if 1 or PyMcaDirs.nativeFileDialogs:
            filedialog = qt.QFileDialog(self)
            filedialog.setFileMode(filedialog.ExistingFiles)
            filedialog.setWindowIcon(qt.QIcon(qt.QPixmap(Icons.IconDict["gioconda16"])))
            filename = filedialog.getOpenFileName(
                        self,
                        "Choose energy table file",
                        wdir,
                        "Energy table files (*.csv)\n")
            filename = str(filename)
            if len(filename):
                try:
                    self.loadEnergyTableParameters(filename)
                    self.inputDir = os.path.dirname(filename)
                    PyMcaDirs.inputDir = self.inputDir
                except:
                    msg = qt.QMessageBox(self)
                    msg.setIcon(qt.QMessageBox.Critical)
                    msg.setText("Error loading energy table: %s" % (sys.exc_info()[1]))
                    msg.exec_()

    def loadEnergyTableParameters(self, filename):
        if sys.platform == "win32":
            ffile = open(filename, "rb")
        else:
            ffile = open(filename)
        lines = ffile.read()
        ffile.close()
        lines = lines.replace("\r","\n")
        lines = lines.replace('\n\n',"\n")
        lines = lines.replace(";","  ")
        lines = lines.replace("\t","  ")
        lines = lines.replace('"',"")
        lines = lines.split("\n")
        labels = lines[0].replace("\n","").split("  ")
        if (len(lines) == 1) or\
           ((len(lines) == 2) and (len(lines[1])==0)):
            #clear table
            ddict={}
            ddict['energylist'] = [None]
            ddict['weightlist'] = [1.0]
            ddict['flaglist'] = [1]
            ddict['scatterlist'] = [1]
        else:
            ddict={}
            ddict['energylist'] = []
            ddict['weightlist'] = []
            ddict['flaglist'] = []
            ddict['scatterlist'] = []
            for i in range(1, len(lines)):
                line = lines[i]
                if not len(line):
                    continue
                ene, weight, useflag, scatterflag = map(float,
                                                        line.split("  "))
                if ene > 0:
                    ddict['energylist'].append(ene)
                else:
                    ddict['energylist'].append(None)
                ddict['weightlist'].append(weight)
                ddict['flaglist'].append(int(useflag))
                ddict['scatterlist'].append(int(scatterflag))
        energylist, weightlist, flaglist, scatterlist = self.table.getParameters()
        lold = len(energylist)
        lnew = len(ddict['energylist'])
        if lold > lnew:
            energylist = [None] * lold
            weightlist = [0.0]  * lold
            flaglist = [0] * lold
            scatterlist = [0] * lold
            energylist[0:lnew] = ddict['energylist'][0:lnew]
            weightlist[0:lnew] = ddict['weightlist'][0:lnew]
            flaglist[0:lnew] = ddict['flaglist'][0:lnew]
            scatterlist[0:lnew] = ddict['scatterlist'][0:lnew]
            self.table.setParameters(energylist,
                                     weightlist,
                                     flaglist,
                                     scatterlist)
        else:
            self.table.setParameters(ddict["energylist"],
                                 ddict["weightlist"],
                                 ddict["flaglist"],
                                 ddict["scatterlist"])
        
    def saveButtonClicked(self):
        energylist, weightlist, flaglist, scatterlist = self.table.getParameters()
        if self.outputDir is None:
            if self.inputDir is not None:
                self.outputDir = self.inputDir
            else:
                self.outputDir = PyMcaDirs.outputDir
        wdir = self.outputDir
        outfile = qt.QFileDialog(self)
        outfile.setWindowTitle("Output File Selection")
        outfile.setModal(1)
        format_list = ['";"-separated CSV *.csv',
                       '","-separated CSV *.csv',
                       '"tab"-separated CSV *.csv']
        if self.outputFilter is None:
            self.outputFilter = format_list[0]
        outfile.setFilters(format_list)
        outfile.selectFilter(self.outputFilter)
        outfile.setFileMode(outfile.AnyFile)
        outfile.setAcceptMode(outfile.AcceptSave)
        outfile.setDirectory(wdir)
        ret = outfile.exec_()
        if not ret:
            outfile.close()
            del outfile
            return
        self.outputFilter = str(outfile.selectedFilter())
        filterused = self.outputFilter.split()
        filetype  = filterused[1]
        extension = filterused[2]
        outputFile=str(outfile.selectedFiles()[0])
        try:            
            self.outputDir  = os.path.dirname(outputFile)
            PyMcaDirs.outputDir = os.path.dirname(outputFile) 
        except:
            self.outputDir  = "."
        outfile.close()
        del outfile
        if not outputFile.endswith('.csv'):
            outputFile += '.csv'
        #always overwrite
        if os.path.exists(outputFile):
            os.remove(outputFile)
        try:
            ffile=open(outputFile,'wb')
        except IOError:
            msg = qt.QMessageBox(self)
            msg.setIcon(qt.QMessageBox.Critical)
            msg.setText("Input Output Error: %s" % (sys.exc_info()[1]))
            msg.exec_()
            return
        if "," in filterused[0]:
            csv = ","
        elif ";" in filterused[0]:
            csv = ";"
        else:
            csv = "\t"
            
        ffile.write('"energy"%s"weight"%s"flag"%s"scatter"\n' % (csv, csv, csv))
        #write the scatter lines in first instance
        alreadysaved = []
        for i in range(len(energylist)):
            if (energylist[i] is not None) and \
               (scatterlist[i] == 1):
                ffile.write("%f%s%f%s%d%s%d\n" % \
                   (energylist[i], csv,
                    weightlist[i], csv,
                    flaglist[i], csv,
                    scatterlist[i]))
                alreadysaved.append(i)

        for i in range(len(energylist)):
            if energylist[i] is not None:
                if i not in alreadysaved:
                    ffile.write("%f%s%f%s%d%s%d\n" % \
                       (energylist[i], csv,
                        weightlist[i], csv,
                        flaglist[i], csv,
                        scatterlist[i]))
        ffile.close()


    def __tubeUpdated(self, d):
        if    self.__calculating:return
        else: self.__calculating = 1
        self.table.setParameters(d["energylist"],
                                 d["weightlist"],
                                 d["flaglist"],
                                 d["scatterlist"])
        self.__calculating = 0
        self.tubeButtonClicked()


if QTVERSION < '4.0.0':
    QTable = qttable.QTable
else:
    QTable = qt.QTableWidget

class EnergyTable(QTable):
    def __init__(self, parent=None, name="Energy Table",
                     energylist=None, weightlist=None, flaglist=None,offset=None,scatterlist=None):
        QTable.__init__(self, parent)
        if energylist is  None:energylist=[]
        if weightlist is  None:weightlist  =[]
        if flaglist   is  None:flaglist  =[]
        if scatterlist   is  None:scatterlist  =[]
        if offset is None:offset = 0
        self.energyList  = energylist
        self.weightList  = weightlist
        self.flagList    = flaglist
        self.offset      = offset
        self.scatterList = scatterlist
        self.verticalHeader().hide()
        self.dataColumns = 20
        if QTVERSION < '4.0.0':
            self.setLeftMargin(0)
            self.setFrameShape(qttable.QTable.NoFrame)
            #self.setFrameShadow(qttable.QTable.Sunken)
            self.setSelectionMode(qttable.QTable.Single)
            self.setNumCols(3 * self.dataColumns)
            if QTVERSION > '3.0.0':
                self.setFocusStyle(qttable.QTable.FollowStyle)
        else:
                if DEBUG:
                    print("margin")
                    print("frame shape")
                    print("selection mode")
                    print("focus style")
                    print("all of them missing")
                self.setColumnCount(3 * self.dataColumns)

        labels = []
        for i in range(self.dataColumns):
            labels.append("Use" + i * " ")
            labels.append("Energy" + i * " ")
            labels.append("Weight" + i * " ")
        if QTVERSION < '4.0.0':
            for label in labels:
                self.horizontalHeader().setLabel(labels.index(label),label)
        else:
            if DEBUG:
                print("margin to addjust")
                print("focus style")
            self.setFrameShape(qt.QTableWidget.NoFrame)
            self.setSelectionMode(qt.QTableWidget.NoSelection)
            self.setColumnCount(len(labels))
            for i in range(len(labels)):
                item = self.horizontalHeaderItem(i)
                if item is None:
                    item = qt.QTableWidgetItem(labels[i],qt.QTableWidgetItem.Type)
                self.setHorizontalHeaderItem(i,item)
                
        self.__rows = 20
        self.__build(self.dataColumns * 20)
        self.__disconnected = False
        for i in range(self.dataColumns):
            if QTVERSION < '4.0.0':
                self.adjustColumn(0 + 3*i)
            else:
                if DEBUG:
                    print("column adjustment missing")
        if QTVERSION < '4.0.0':
            self.connect(self, qt.SIGNAL("valueChanged(int,int)"),self.mySlot)
        else:
            self.connect(self, qt.SIGNAL("cellChanged(int, int)"),self.mySlot)

    def _itemSlot(self, *var):
        self.mySlot(self.currentRow(), self.currentColumn())

    def __build(self,nrows=None):
        #self.setNumRows(int(nrows/2))
        if nrows is None: nrows = self.__rows *self.dataColumns
        if QTVERSION < '4.0.0':
            self.setNumRows(int(nrows/self.dataColumns))
        else:
            self.setRowCount(int(nrows/self.dataColumns))
        if QTVERSION > '4.0.0':
            rheight = self.horizontalHeader().sizeHint().height()
            for idx in range(self.rowCount()):
                self.setRowHeight(idx, rheight)
                
        coloffset = 0
        rowoffset = 0
        for idx in range(nrows):
            text = "Energy %3d" % (idx)
            if idx >= (nrows/self.dataColumns):
                rowoffset= (-int(idx/self.__rows))*(nrows/self.dataColumns)
                coloffset=  3*int(idx/self.__rows)
            r = idx + rowoffset
            color = qt.Qt.white
            if len(self.scatterList):
                if idx < len(self.scatterList):
                    if (self.scatterList[idx] is not None)and \
                       (self.scatterList[idx] != "None"):
                        if self.scatterList[idx]:color = qt.QColor(255, 20, 147)
            elif idx == 0:
                color = qt.QColor(255, 20, 147)
            if QTVERSION < '4.0.0':
                #item= qttable.QCheckTableItem(self, text)
                if QTVERSION < '3.0.0':
                    if DEBUG:
                        print("background  color to implement in qt 2.3.0")
                else:
                    self.viewport().setPaletteBackgroundColor(color)
                item= ColorQTableItem(self, text, color)                
                self.setItem(r, 0+coloffset, item)
            else:
                item = self.cellWidget(r, 0+coloffset)
                if item is None:
                    item= ColorQTableItem(self, text, color)
                    self.setCellWidget(r, 0+coloffset, item)
                    self.connect(item, qt.SIGNAL("stateChanged(int)"),self._itemSlot)
                else:
                    item.setText(text)
                oldcolor = item.color
                if color != oldcolor:
                    item.setColor(color)
                    item.repaint(item.rect())
            if idx < len(self.energyList):
                item.setChecked(self.flagList[idx])
                if (self.energyList[idx] is not None) and \
                   (self.energyList[idx] != "None"):
                    self.setText(r, 1+coloffset,
                                 "%f" % self.energyList[idx])
                else:
                    self.setText(r, 1+coloffset,"")
            else:
                item.setChecked(False)
                self.setText(r, 1+coloffset,"")
            if idx < len(self.weightList):
                self.setText(r, 2+coloffset,"%f" % self.weightList[idx])
            else:
                self.setText(r, 2+coloffset,"")

    def setParameters(self, energylist, weightlist, flaglist, scatterlist=None):
        if isinstance(energylist, Numeric.ArrayType):
            self.energyList=energylist.tolist()
        elif type(energylist) != type([]):
            self.energyList=[energylist]
        else:
            self.energyList =energylist

        if   isinstance(weightlist, Numeric.ArrayType):
            self.weightList=weightlist.tolist()
        elif type(weightlist) != type([]):
            self.energyList=[weightlist]
        else:
            self.weightList =weightlist
        
        if   isinstance(flaglist, Numeric.ArrayType):
            self.flagList=flaglist.tolist()
        elif type(flaglist) != type([]):
            self.flagList=[flaglist]
        else:
            self.flagList =flaglist

        
        if scatterlist is None:
            scatterlist = Numeric.zeros(len(self.energyList)).tolist()
            scatterlist[0] = 1
        if isinstance(scatterlist, Numeric.ArrayType):
            self.scatterList=scatterlist.tolist()
        elif type(scatterlist) != type([]):
            self.scatterList=[scatterlist]
        else:
            self.scatterList =scatterlist
        self.__fillTable()

    def getParameters(self):
        if QTVERSION < '4.0.0':
            nrows = self.numRows()*self.dataColumns
        else:
            nrows = self.rowCount() * self.dataColumns
        coloffset   = 0
        rowoffset   = 0
        energyList  = []
        weightList  = []
        flagList    = []
        scatterList = []
        for idx in range(nrows):
            if idx >= (nrows/self.dataColumns):
                rowoffset= (-int(idx/self.__rows))*(nrows/self.dataColumns)
                coloffset=  3*int(idx/self.__rows)
            r = idx + rowoffset
            if QTVERSION < '4.0.0':
                item = self.item(r,0+coloffset)
                energyflag = int(item.isChecked())
            else:
                item = self.cellWidget(r,0+coloffset)
                if item is None:
                    #this should never happen
                    continue
                else:
                    energyflag = int(item.isChecked())
            if item.color == qt.Qt.white:
                scatterflag = 0
            else:
                scatterflag = 1
            text = str(self.text(r,1+coloffset))
            text=text.replace(" ","")
            if len(text):
                try:
                    energy = float(text)
                except:
                    energyflag = 0
                    energy = None
            else:
                energyflag = 0
                energy = None
            text = str(self.text(r,2+coloffset))
            text=text.replace(" ","")
            if len(text):
                try:
                    energyweight = float(text)
                except:
                    energyflag  = 0
                    energyweight= 0.0
            else:
                energyflag = 0
                energyweight = 0.0
            energyList.append(energy)
            weightList.append(energyweight)
            flagList.append(energyflag)
            scatterList.append(scatterflag)
        return energyList, weightList, flagList, scatterList

    def __fillTable(self):
        self.__disconnected = True
        try:
            self.__build(max(self.__rows*self.dataColumns,len(self.energyList)))
            for i in range(self.dataColumns):
                if QTVERSION < '4.0.0':
                    self.adjustColumn(0 + 3*i)
                else:
                    if DEBUG:
                        print("column adjustment missing")
        except:
            self.__disconnected = False
            raise
        self.__disconnected = False
        ddict = self._getDict()
        if ddict != {}:
            ddict['event'] = "TableFilled"
            ddict['row']   = 0
            ddict['col']   = 0
            if QTVERSION < '4.0.0':
                self.emit(qt.PYSIGNAL("EnergyTableSignal"), (ddict,))
            else:
                self.emit(qt.SIGNAL("EnergyTableSignal"), (ddict))

    def mySlot(self,row,col):
        if self.__disconnected:return
        if DEBUG:
            print("Value changed row = %d col = %d" % (row, col))
            print("Text = %s" % self.text(row,col))
        if (col != 0) and (col !=3) and (col != 6) and (col != 9):
            try:
                s = str(self.text(row, col))
                s=s.replace(" ","")
                if len(s):
                    v=float(s)
            except:
                msg = qt.QMessageBox(self)       
                msg.setIcon(qt.QMessageBox.Critical)
                msg.setText("Invalid Float")
                if QTVERSION < '4.0.0':
                    msg.exec_loop()
                else:
                    msg.exec_()
                return 
        ddict = self._getDict()
        if ddict != {}:
            ddict['event'] = "ValueChanged"
            ddict['row']   = row
            ddict['col']   = col
            if QTVERSION < '4.0.0':
                self.emit(qt.PYSIGNAL("EnergyTableSignal"),(ddict,))
            else:
                self.emit(qt.SIGNAL("EnergyTableSignal"),(ddict))
            
    def text(self, row, col):
        if QTVERSION < '4.0.0':
            return qttable.QTable.text(self, row, col)
        else:
            if (col % 3) in [1,2]:
                item = self.item(row , col)
                if item is not None:
                    return item.text()
                else:
                    return ''

    def setText(self, row, col, text):
        if QTVERSION < "4.0.0":
            QTable.setText(self, row, col, text)
        else:
            #ncol = self.columnCount()
            if (col % 3) in [1,2]:
                item = self.item(row, col)
                if item is None:
                    item = qt.QTableWidgetItem(text,
                                               qt.QTableWidgetItem.Type)
                    self.setItem(row, col, item)
                else:
                    item.setText(text)
            else:
                if DEBUG:
                    print("checkbox can be called?")
                pass

    def _getDict(self):
        dict ={}
        if QTVERSION < '4.0.0':
            n = self.numRows()
        else:
            n = self.rowCount()
        dict['energy'] = []
        dict['rate']   = []
        dict['flag']   = []
        dict['scatterflag']   = []
        for i in range(n * self.dataColumns):
                if i >= (n*self.__rows/self.dataColumns):
                    rowoffset= (-int(i/self.__rows))*(self.__rows)
                    r = i + rowoffset
                    coffset=  3*int(i/self.__rows)
                else:
                    r = i
                    coffset= 0
                try:
                #if 1:
                    s = str(self.text(r, 1+coffset))
                    s=s.replace(" ","")
                    if len(s):
                        ene=float(s)
                        if QTVERSION < '4.0.0':
                            selfitem = self.item(r,0+coffset)
                        else:
                            selfitem = self.cellWidget(r, 0+coffset)
                        if selfitem.isChecked():
                            flag = 1
                        else:
                            flag = 0
                        if selfitem.color != qt.Qt.white:
                            scatterflag = 1
                        else:
                            scatterflag = 0
                        s = str(self.text(r, 2+coffset))
                        s=s.replace(" ","")
                        if len(s):
                            rate = float(s)
                            dict['flag'].append(flag)
                            dict['energy'].append(ene)
                            dict['rate'].append(rate)
                            dict['scatterflag'].append(scatterflag)
                except:
                #else:
                    msg = qt.QMessageBox(self)       
                    msg.setIcon(qt.QMessageBox.Critical)
                    msg.setText("EnergyTable: Error on energy %d" % i)
                    if QTVERSION < '4.0.0':
                        msg.exec_loop()
                    else:
                        msg.exec_()
                    return {}
        return dict

if QTVERSION < '4.0.0':
    class ColorQTableItem(qttable.QCheckTableItem):
             def __init__(self, table, text,color=qt.Qt.white,bold=0):
                qttable.QCheckTableItem.__init__(self, table, text)
                self.color = color
                self.bold  = bold

             def paint(self, painter, colorgroup, rect, selected):
                painter.font().setBold(self.bold)
                cg = qt.QColorGroup()
                #colorgroup)
                cg.setColor(qt.QColorGroup.Base, self.color)
                cg.setColor(qt.QColorGroup.Foreground, self.color)
                cg.setColor(qt.QColorGroup.HighlightedText, self.color)
                qttable.QCheckTableItem.paint(self,painter, cg, rect, selected)
                painter.font().setBold(0)

else:
    class ColorQTableItem(qt.QCheckBox):
             def __init__(self, table, text, color=qt.Qt.white,bold=0):
                qt.QCheckBox.__init__(self, table)
                self.color = color
                self.bold  = bold
                self.setText(text)
                #this is one critical line
                self.setAutoFillBackground(1)

             def setColor(self, color):
                 self.color = color

             def paintEvent(self, painter):
                #this is the other (self.palette() is not appropriate)
                palette = qt.QPalette()
                role = self.backgroundRole()
                palette.setColor(role, self.color)
                self.setPalette(palette)
                return qt.QCheckBox.paintEvent(self, painter)
            
def main(args):
    app=qt.QApplication(args)
    #tab = AttenuatorsTableWidget(None)
    def dummy(ddict):
        print("dict =",ddict)
    tab = EnergyTable(None)
    energy = Numeric.arange(100.).astype(Numeric.Float)+ 1.5
    weight = Numeric.ones(len(energy), Numeric.Float)
    flag  = Numeric.zeros(len(energy)).tolist()
    scatterlist = Numeric.zeros(len(energy))
    scatterlist[0:10] = 1
    tab.setParameters(energy, weight, flag, scatterlist)
    if QTVERSION < '4.0.0':
        qt.QObject.connect(tab,qt.PYSIGNAL('EnergyTableSignal'),dummy)
        tab.show()
        app.setMainWidget( tab )
        app.exec_loop()
    else:
        qt.QObject.connect(tab,qt.SIGNAL('EnergyTableSignal'),dummy)
        tab.show()
        app.exec_()

                            

if __name__=="__main__":
    main(sys.argv)