def mouseMoveEvent(self, event: Qt.QMouseEvent):
if self.dragging:
scale_factor = self.scale / self.fig.get_dpi()
self.center[0] -= (event.x() - self.drag_start[0]) * scale_factor
self.center[1] += (event.y() - self.drag_start[1]) * scale_factor
self.drag_start = (event.x(), event.y())
self.do_update = True
# self.update_plot()
self.center_changed.emit(self.center)
def mousePressEvent(self, event: Qt.QMouseEvent):
if event.buttons() & QtCore.Qt.MiddleButton:
self.dragging = True
self.drag_start = (event.x(), event.y())
