ZoomableScene.py 文件源码

def draw_sep_area(self, y_mid):
        x = self.sceneRect().x()
        y = self.sceneRect().y()
        h = self.sceneRect().height()
        w = self.sceneRect().width()
        if self.noise_area is not None:
            self.noise_area.hide()

        if self.ones_area is None:
            self.ones_area = QGraphicsRectItem(x, y, w, h / 2 + y_mid)
            self.ones_area.setBrush(constants.ONES_AREA_COLOR)
            self.ones_area.setOpacity(constants.SEPARATION_OPACITY)
            self.ones_area.setPen(QPen(constants.TRANSPARENT_COLOR, Qt.FlatCap))
            self.addItem(self.ones_area)

        else:
            self.ones_area.show()
            self.ones_area.setRect(x, y, w, h / 2 + y_mid)

        start = y + h / 2 + y_mid
        if self.zeros_area is None:
            self.zeros_area = QGraphicsRectItem(x, start, w, (y + h) - start)
            self.zeros_area.setBrush(constants.ZEROS_AREA_COLOR)
            self.zeros_area.setOpacity(constants.SEPARATION_OPACITY)
            self.zeros_area.setPen(QPen(constants.TRANSPARENT_COLOR, Qt.FlatCap))
            self.addItem(self.zeros_area)
        else:
            self.zeros_area.show()
            self.zeros_area.setRect(x, start, w, (y + h) - start)