Function update_rect

galleries/examples/event_handling/viewlims.py:71–75

(rect, ax)

def update_rect(rect, ax):  # Let the rectangle track the bounds of the zoom axes.
    xlo, xhi = ax.get_xlim()
    ylo, yhi = ax.get_ylim()
    rect.set_bounds((xlo, ylo, xhi - xlo, yhi - ylo))
    ax.figure.canvas.draw_idle()


# Connect for changing the view limits.