forked from M-Labs/artiq
81 lines
2.5 KiB
Python
Executable File
81 lines
2.5 KiB
Python
Executable File
#!/usr/bin/env python3
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from PyQt5 import QtWidgets, QtCore, QtGui
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from artiq.applets.simple import SimpleApplet
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class QResponsiveLCDNumber(QtWidgets.QLCDNumber):
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doubleClicked = QtCore.pyqtSignal()
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def mouseDoubleClickEvent(self, event):
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self.doubleClicked.emit()
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class QCancellableLineEdit(QtWidgets.QLineEdit):
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editCancelled = QtCore.pyqtSignal()
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def keyPressEvent(self, event):
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if event.key() == QtCore.Qt.Key_Escape:
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self.editCancelled.emit()
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else:
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super().keyPressEvent(event)
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class NumberWidget(QtWidgets.QStackedWidget):
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def __init__(self, args, ctl):
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QtWidgets.QStackedWidget.__init__(self)
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self.dataset_name = args.dataset
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self.ctl = ctl
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self.lcd_widget = QResponsiveLCDNumber()
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self.lcd_widget.setDigitCount(args.digit_count)
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self.lcd_widget.doubleClicked.connect(self.start_edit)
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self.addWidget(self.lcd_widget)
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self.edit_widget = QCancellableLineEdit()
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self.edit_widget.setValidator(QtGui.QDoubleValidator())
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self.edit_widget.setAlignment(QtCore.Qt.AlignRight)
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self.edit_widget.editCancelled.connect(self.cancel_edit)
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self.edit_widget.returnPressed.connect(self.confirm_edit)
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self.addWidget(self.edit_widget)
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font = QtGui.QFont()
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font.setPointSize(60)
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self.edit_widget.setFont(font)
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self.setCurrentWidget(self.lcd_widget)
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def start_edit(self):
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# QLCDNumber value property contains the value of zero
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# if the displayed value is not a number.
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self.edit_widget.setText(str(self.lcd_widget.value()))
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self.edit_widget.selectAll()
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self.edit_widget.setFocus()
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self.setCurrentWidget(self.edit_widget)
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def confirm_edit(self):
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value = float(self.edit_widget.text())
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self.ctl.set_dataset(self.dataset_name, value)
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self.setCurrentWidget(self.lcd_widget)
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def cancel_edit(self):
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self.setCurrentWidget(self.lcd_widget)
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def data_changed(self, value, metadata, persist, mods):
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try:
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n = float(value[self.dataset_name])
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except (KeyError, ValueError, TypeError):
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n = "---"
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self.lcd_widget.display(n)
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def main():
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applet = SimpleApplet(NumberWidget)
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applet.add_dataset("dataset", "dataset to show")
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applet.argparser.add_argument("--digit-count", type=int, default=10,
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help="total number of digits to show")
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applet.run()
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if __name__ == "__main__":
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main()
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