Source code for PyMca5.PyMcaGui.misc.DoubleSlider

#/*##########################################################################
# Copyright (C) 2004-2014 V.A. Sole, European Synchrotron Radiation Facility
#
# This file is part of the PyMca X-ray Fluorescence Toolkit developed at
# the ESRF by the Software group.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
#############################################################################*/
__author__ = "V.A. Sole - ESRF Data Analysis"
__contact__ = "sole@esrf.fr"
__license__ = "MIT"
__copyright__ = "European Synchrotron Radiation Facility, Grenoble, France"

from PyMca5.PyMcaGui import PyMcaQt as qt
QTVERSION = qt.qVersion()

DEBUG = 0

[docs]class DoubleSlider(qt.QWidget): sigDoubleSliderValueChanged = qt.pyqtSignal(object) def __init__(self, parent = None, scale = False): qt.QWidget.__init__(self, parent) self.mainLayout = qt.QVBoxLayout(self) self.mainLayout.setContentsMargins(6, 6, 6, 6) self.mainLayout.setSpacing(1) orientation = qt.Qt.Horizontal self.minSlider = MySlider(self, orientation) self.minSlider.setRange(0, 100.) self.minSlider.setValue(0) self.maxSlider = MySlider(self, orientation) self.maxSlider.setRange(0, 100.0) self.maxSlider.setValue(100.) self.mainLayout.addWidget(self.maxSlider) self.mainLayout.addWidget(self.minSlider) self.minSlider.sigValueChanged.connect(self._sliderChanged) self.maxSlider.sigValueChanged.connect(self._sliderChanged) def __getDict(self): ddict = {} ddict['event'] = "doubleSliderValueChanged" m = self.minSlider.value() M = self.maxSlider.value() if m > M: ddict['max'] = m ddict['min'] = M else: ddict['min'] = m ddict['max'] = M return ddict def _sliderChanged(self, value): if DEBUG: print("DoubleSlider._sliderChanged()") ddict = self.__getDict() self.sigDoubleSliderValueChanged.emit(ddict)
[docs] def setMinMax(self, m, M): self.minSlider.setValue(m) self.maxSlider.setValue(M)
[docs] def getMinMax(self): m = self.minSlider.value() M = self.maxSlider.value() if m > M: return M, m else: return m, M
[docs]class MySlider(qt.QWidget): sigValueChanged = qt.pyqtSignal(float) def __init__(self, parent = None, orientation=qt.Qt.Horizontal): qt.QWidget.__init__(self, parent) if orientation == qt.Qt.Horizontal: alignment = qt.Qt.AlignHCenter | qt.Qt.AlignTop layout = qt.QHBoxLayout(self) else: alignment = qt.Qt.AlignVCenter | qt.Qt.AlignLeft layout = qt.QVBoxLayout(self) layout.setContentsMargins(0, 0, 0, 0) layout.setSpacing(0) self.slider = qt.QSlider(self) self.slider.setOrientation(orientation) self.label = qt.QLabel("0", self) self.label.setAlignment(alignment) self.label.setFixedWidth(self.label.fontMetrics().width('100.99')) layout.addWidget(self.slider) layout.addWidget(self.label) self.slider.valueChanged.connect(self.setNum)
[docs] def setNum(self, value): value = value / 100. self.label.setText('%.2f' % value) self.sigValueChanged.emit(value)
[docs] def setRange(self, minValue, maxValue): self.slider.setRange(minValue * 100, int(maxValue * 100))
[docs] def setValue(self, value): self.slider.setValue(value * 100)
[docs] def value(self): return self.slider.value()/100.
[docs]def test(): app = qt.QApplication([]) app.lastWindowClosed.connect(app.quit) w = DoubleSlider() w.show() app.exec_()
if __name__ == "__main__": test()