pyqt中的多个嵌入matplotlib画布在鼠标悬停时更改大小

pip install PyQt5 matplotlib

import sys
from PyQt5.QtWidgets import QApplication, QMainWindow, QGraphicsView, QGraphicsScene
from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas
from matplotlib.figure import Figure

class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()

        # 创建多个Matplotlib画布
        self.canvas1 = self.create_canvas()
        self.canvas2 = self.create_canvas()

        # 创建QGraphicsView和QGraphicsScene
        self.view = QGraphicsView()
        self.scene = QGraphicsScene()

        # 将画布添加到场景中
        self.scene.addWidget(self.canvas1)
        self.scene.addWidget(self.canvas2)

        # 设置场景
        self.view.setScene(self.scene)

        # 设置主窗口的中心部件为QGraphicsView
        self.setCentralWidget(self.view)

    def create_canvas(self):
        # 创建Matplotlib画布
        fig = Figure()
        canvas = FigureCanvas(fig)
        return canvas

if __name__ == '__main__':
    app = QApplication(sys.argv)
    mainWindow = MainWindow()
    mainWindow.show()
    sys.exit(app.exec_())

class CustomGraphicsView(QGraphicsView):
    def __init__(self, parent=None):
        super().__init__(parent)

    def mouseMoveEvent(self, event):
        # 获取鼠标的位置
        pos = event.pos()

        # 根据鼠标的位置调整画布的大小
        self.scene().items()[0].widget().setGeometry(pos.x(), pos.y(), 200, 200)

        super().mouseMoveEvent(event)

# 在MainWindow类中使用CustomGraphicsView替换QGraphicsView
self.view = CustomGraphicsView()