Source code for taurus.qt.qtgui.panel.qrawdatachooser

#!/usr/bin/env python

#############################################################################
##
# This file is part of Taurus
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# http://taurus-scada.org
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# Copyright 2011 CELLS / ALBA Synchrotron, Bellaterra, Spain
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# Taurus is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
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# Taurus 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 Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public License
# along with Taurus.  If not, see <http://www.gnu.org/licenses/>.
##
#############################################################################

"""
RawDataChooser.py:  widget for importing RawData (from file or from a function)
"""

__all__ = ["QRawDataWidget"]

import numpy

from taurus.external.qt import Qt
from taurus.core.util.safeeval import SafeEvaluator
from taurus.qt.qtgui.util.ui import UILoadable


[docs]@UILoadable class QRawDataWidget(Qt.QWidget): ReadFromFiles = Qt.pyqtSignal(int, int) AddCurve = Qt.pyqtSignal(dict) def __init__(self, parent=None): super(QRawDataWidget, self).__init__(parent) self.loadUi() # connecttions self.openFilesBT.clicked.connect(self.onOpenFilesButtonClicked) self.addCurveBT.clicked.connect(self.onAddCurveButtonClicked) # set validators in LE's self.xFromLE.setValidator(Qt.QDoubleValidator(self)) self.xToLE.setValidator(Qt.QDoubleValidator(self)) self.xStepLE.setValidator(Qt.QDoubleValidator(self))
[docs] def onOpenFilesButtonClicked(self): """ Emit a ReadFromFiles signal with the selected xcol and skiprows as parameters""" xcol = self.xcolSB.value() if xcol == self.xcolSB.minimum(): xcol = None skiprows = self.headerSB.value() self.ReadFromFiles.emit(xcol, skiprows)
[docs] def onAddCurveButtonClicked(self): """ Emit a AddCurve signal with a rawdata dictionary as a parameter. The rawdata dictionary is prepared from the from the GUI's selection.""" rawdata = {} if self.xRangeRB.isChecked(): rawdata['x'] = numpy.arange(float(self.xFromLE.text()), float( self.xToLE.text()), float(self.xStepLE.text())) else: sev = SafeEvaluator() try: rawdata['x'] = sev.eval(str(self.xValuesLE.text())) except: Qt.QMessageBox.warning( self, 'Invalid x values' 'Cannot interpret the x values.\n Use Python expressions like "[1, 3 , 67]" or "arange(100)")') return rawdata['f(x)'] = str(self.f_xLE.text()) self.AddCurve.emit(rawdata)
if __name__ == "__main__": import sys from taurus.qt.qtgui.application import TaurusApplication app = TaurusApplication(sys.argv, cmd_line_parser=None) form = QRawDataWidget() form.show() sys.exit(app.exec_())