pyside6实现图片旋转

from PySide6 import QtWidgets,QtCore,QtGui

#定义图片大小
WIDTH = 200
HEIGHT = 200
class Ui(QtWidgets.QWidget):
    def __init__(self):
        super().__init__()
        self.resize(WIDTH,HEIGHT)

        self.setPalette(QtGui.QPalette(QtGui.Qt.green))
        self.setAutoFillBackground(True)

        # 默认角度
        self.angle = 0

        #实例化定时器
        self.timer = QtCore.QTimer(self)

        self.timer.timeout.connect(self.timeTimeOut)

    def timeTimeOut(self):
        self.update()

    def start(self):
        self.timer.start(100)

    def stop(self):
        self.timer.stop()


    def paintEvent(self, event):
        painter = QtGui.QPainter(self)
        painter.setRenderHint(QtGui.QPainter.Antialiasing,True)

        self.angle+=5
        if self.angle == 360:
            self.angle = 0

        image = QtGui.QPixmap()
        image.load("./mm.jpg")
        size = QtCore.QSize(WIDTH,HEIGHT)

        scaleImage = image.scaled(size)

        #计算窗口中心位置
        windowCenterX = self.width()/2
        windowCenterY = self.height()/2

        #计算图片中心
        imageCenterX = scaleImage.width()/2
        imageCenterY = scaleImage.height()/2

        #平移距离
        translateX = windowCenterX - imageCenterX
        translateY = windowCenterY - imageCenterY


        recf = QtCore.QRect(translateX,translateY,scaleImage.width(),scaleImage.height())

        #设置旋转参考点为窗口
        painter.translate(windowCenterX,windowCenterY)
        painter.rotate(self.angle)
        #将参考点设置回图片
        painter.translate(-windowCenterX,-windowCenterY)

        painter.drawPixmap(recf,scaleImage,scaleImage.rect())

        #再画一个矩形
        pen = QtGui.QPen()
        pen.setColor(QtGui.Qt.red)
        pen.setWidth(2)
        painter.drawRect(recf)


class Window(QtWidgets.QWidget):
    def __init__(self):
        super().__init__()
        self.resize(1500,900)

        self.motor = Ui()
        self.motor.move(20,20)
        self.motor.setParent(self)

        self.motor2 = Ui()
        self.motor2.move(500,20)
        self.motor2.setParent(self)


        self.btn = QtWidgets.QPushButton('start',self)
        self.btn.move(50,800)

        self.btn2 = QtWidgets.QPushButton("STOP",self)
        self.btn2.move(200,800)

        self.btn.clicked.connect(self.btn_click)
        self.btn2.clicked.connect(self.btn2_click)

    def btn_click(self):
        self.motor.start()
        self.motor2.start()

    def btn2_click(self):
        self.motor.stop()
        self.motor2.stop()




if __name__ == '__main__':
    import sys
    app = QtWidgets.QApplication(sys.argv)

    win = Window()
    win.show()

    sys.exit(app.exec())