[PyQt] QDoubleSpinBox & it's precision

[Prashant Saxena]

Here is the script.

#!/usr/bin/env python

from PyQt4 import QtCore, QtGui

__SINGLESTEP__ = 0.001
__DECIMALS__ = 3
__PRECISION__ = 0.001
__HSPACING__ = 5
__LABELWIDTH__ = 100
__2ndWIDGET_WIDTH__ = 70

class QxDoubleSpinBox(QtGui.QDoubleSpinBox):
    def __init__(self, parent=None, value=0.):
        QtGui.QDoubleSpinBox.__init__(self, parent)
        self.setRange(0., 1.)
        self.setValue(0.421)
        self.setSingleStep(__SINGLESTEP__)
        self.setFixedWidth(__2ndWIDGET_WIDTH__ )
        self.setWrapping(True)
        self.setDecimals(__DECIMALS__)
        
    def valueFromText(self, str):
        return FixedPoint(str, 3)
                
    def textFromValue(self, value):
        print "textFromValue = ", value
        #return str(FixedPoint(value, 3)) # 'FixedPoint' Custom Floating Point Management class
        return str(value)
        
class Window(QtGui.QWidget):
    def __init__(self):
        super(Window, self).__init__()

        self.createDoubleSpinBoxes()
        layout = QtGui.QHBoxLayout()
        layout.addWidget(self.doubleSpinBoxesGroup)
        self.setLayout(layout)
        self.setWindowTitle("Spin Boxes")
    

    def createDoubleSpinBoxes(self):
        self.doubleSpinBoxesGroup = QtGui.QGroupBox("Double precision spinboxes")
        self.doubleSpinBox = QxDoubleSpinBox(self, 0.421)
       
        spinBoxLayout = QtGui.QVBoxLayout()
        spinBoxLayout.addWidget(self.doubleSpinBox)
        self.doubleSpinBoxesGroup.setLayout(spinBoxLayout)


if __name__ == '__main__':

    import sys
    app = QtGui.QApplication(sys.argv)    
    window = Window()
    window.show()    
    sys.exit(app.exec_())
    
    

Prashant

qt-sdk-win-opensource-2009.03.1.exe
Python 2.6.3
PyQt-Py2.6-gpl-4.6-1
Win XP, 32 Bit



      Add whatever you love to the Yahoo! India homepage. Try now! http://in.yahoo.com/trynew