test_ViewBox.py 文件源码

def init_viewbox():
    """Helper function to init the ViewBox
    """
    global win, vb

    win = pg.GraphicsWindow()
    win.ci.layout.setContentsMargins(0,0,0,0)
    win.resize(200, 200)
    win.show()
    vb = win.addViewBox()

    # set range before viewbox is shown
    vb.setRange(xRange=[0, 10], yRange=[0, 10], padding=0)

    # required to make mapFromView work properly.
    qtest.qWaitForWindowShown(win)

    g = pg.GridItem()
    vb.addItem(g)

    app.processEvents()