LiveGraphicView.py 文件源码

def mouseMoveEvent(self, event: QMouseEvent):
        super().mouseMoveEvent(event)
        if isinstance(self.scene(), GridScene):
            x = int(self.mapToScene(event.pos()).x())
            freq = self.scene().get_freq_for_pos(x)
            self.scene().draw_frequency_marker(x, freq)