forked from M-Labs/artiq
105 lines
3.5 KiB
Python
Executable File
105 lines
3.5 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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from artiq.tools import scale_from_metadata
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from artiq.gui.tools import LayoutWidget
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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(LayoutWidget):
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def __init__(self, args, req):
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LayoutWidget.__init__(self)
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self.dataset_name = args.dataset
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self.req = req
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self.metadata = dict()
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self.number_area = QtWidgets.QStackedWidget()
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self.addWidget(self.number_area, 0, 0)
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self.unit_area = QtWidgets.QLabel()
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self.unit_area.setAlignment(QtCore.Qt.AlignRight | QtCore.Qt.AlignTop)
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self.addWidget(self.unit_area, 0, 1)
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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.number_area.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 | QtCore.Qt.AlignVCenter)
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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.number_area.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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unit_font = QtGui.QFont()
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unit_font.setPointSize(20)
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self.unit_area.setFont(unit_font)
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self.number_area.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.number_area.setCurrentWidget(self.edit_widget)
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def confirm_edit(self):
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scale = scale_from_metadata(self.metadata)
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val = float(self.edit_widget.text())
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val *= scale
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self.req.set_dataset(self.dataset_name, val, **self.metadata)
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self.number_area.setCurrentWidget(self.lcd_widget)
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def cancel_edit(self):
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self.number_area.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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self.metadata = metadata[self.dataset_name]
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# This applet will degenerate other scalar types to native float on edit
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# Use the dashboard ChangeEditDialog for consistent type casting
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val = float(value[self.dataset_name])
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scale = scale_from_metadata(self.metadata)
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val /= scale
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except (KeyError, ValueError, TypeError):
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val = "---"
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unit = self.metadata.get("unit", "")
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self.unit_area.setText(unit)
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self.lcd_widget.display(val)
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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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