def sendEvent(self, event: QEvent) -> None:
"""
Send an event.
Args:
event: The event to send.
"""
if event.type() == QEvent.Type.FocusOut:
# Ignored - cannot get focus back reliably :-(
return
if isinstance(event, QMouseEvent):
# `windowPos` is replaced with `localPos` as it has no meaning in offscreen rendering.
event = QMouseEvent(event.type(), event.localPos(),
event.screenPos(), event.button(),
event.buttons(), event.modifiers())
elif isinstance(event, QWheelEvent):
event = QWheelEvent(event.position(), event.position(),
event.pixelDelta(), event.angleDelta(),
event.buttons(), event.modifiers(),
event.phase(), event.inverted(),
event.source())
self._window.contentItem().forceActiveFocus()
QCoreApplication.sendEvent(self._window, event)
def eventFilter(self, watched_obj: QObject, event: QEvent):
if event.type() == QEvent.MouseButtonPress or event.type(
) == QEvent.MouseButtonRelease:
self.draw_brush_event(event)
return True
elif event.type() == QEvent.MouseMove:
self.draw_brush_event(event)
return False
elif event.type() == QEvent.Wheel and event.modifiers(
) == Qt.ControlModifier:
angle_delta_y = event.angleDelta().y()
zoom_factor = 1 + np.sign(angle_delta_y) * 0.2 * abs(
angle_delta_y) / 110
self.radius *= zoom_factor
self.radius = max(self.radius, MIN_RADIUS)
self.draw_brush_event(event)
return True
else:
return super().eventFilter(watched_obj, event)