2dpainting.py 文件源码

def __init__(self):
        super(Window, self).__init__()

        self.setWindowTitle("2D Painting on Native and OpenGL Widgets")

        helper = Helper()
        native = Widget(helper, self)
        openGL = GLWidget(helper, self)
        nativeLabel = QLabel("Native")
        nativeLabel.setAlignment(Qt.AlignHCenter)
        openGLLabel = QLabel("OpenGL")
        openGLLabel.setAlignment(Qt.AlignHCenter)

        layout = QGridLayout()
        layout.addWidget(native, 0, 0)
        layout.addWidget(openGL, 0, 1)
        layout.addWidget(nativeLabel, 1, 0)
        layout.addWidget(openGLLabel, 1, 1)
        self.setLayout(layout)

        timer = QTimer(self)
        timer.timeout.connect(native.animate)
        timer.timeout.connect(openGL.animate)
        timer.start(50)