class DistanceWidget(QWidget):
""" Widget used to manually edit the selection radius"""
distanceChanged = pyqtSignal(float)
distanceEditingFinished = pyqtSignal(Qt.KeyboardModifiers)
distanceEditingCanceled = pyqtSignal()
def __init__(self, label, parent=None):
super().__init__(parent)
layout = QHBoxLayout(self)
layout.setContentsMargins(0, 0, 0, 0)
layout.setAlignment(Qt.AlignLeft)
if label:
self.label = QLabel(label, self)
self.label.setAlignment(Qt.AlignRight | Qt.AlignCenter)
layout.addWidget(self.label)
self.spinbox = QgsDoubleSpinBox(self)
self.spinbox.setSingleStep(1)
self.spinbox.setValue(0)
self.spinbox.setMinimum(0)
self.spinbox.setMaximum(1000000000)
self.spinbox.setDecimals(6)
self.spinbox.setShowClearButton(False)
self.spinbox.setSizePolicy(QSizePolicy.MinimumExpanding,
QSizePolicy.Preferred)
layout.addWidget(self.spinbox)
# connect signals
self.spinbox.installEventFilter(self)
self.spinbox.valueChanged.connect(self.distanceChanged.emit)
# config focus
self.setFocusProxy(self.spinbox)
def set_distance(self, distance):
""" set the selection radius """
self.spinbox.setValue(distance)
self.spinbox.selectAll()
def distance(self):
""" return he selection radius """
return self.spinbox.value()
def eventFilter(self, obj, event):
""" Intercept key press event to emit our own custom signals """
# pylint: disable=invalid-name
if obj is self.spinbox and event.type() == QEvent.KeyPress:
if event.key() == Qt.Key_Escape:
self.distanceEditingCanceled.emit()
return True
if event.key() in (Qt.Key_Enter, Qt.Key_Return):
# Emit the editing finished signal with modifier to handle remove
# from selection and add to selection
self.distanceEditingFinished.emit(event.modifiers())
return True
return False
