ui_control.py

from qgis.PyQt.QtCore import pyqtSignal
from qgis.PyQt.QtWidgets import QWidget, QDockWidget, QApplication

from .dock import Ui_Form


class Widget(QWidget, Ui_Form):
    def __init__(self, parent):
        QWidget.__init__(self, parent)
        self.setupUi(self)

    def update_startpoint(self, point, z=90):
        self.lineEdit_vertexX0.setText(str(point.x()))
        self.lineEdit_vertexY0.setText(str(point.y()))
        self.lineEdit_vertexZ0.setText(str(z))


class Dock(QDockWidget):
    closed = pyqtSignal()

    def __init__(self, parent):
        QDockWidget.__init__(self, parent)
        self.setWidget(Widget(self))
        self.setWindowTitle("Azimuth and distance")

    def closeEvent(self, event):
        self.closed.emit()


if __name__ == "__main__":
    import sys, os

    app = QApplication(sys.argv)
    c = Dock(None)
    c.show()
    sys.exit(app.exec_())