MatplotlibWidgets.py 文件源码

def __init__(self, canvas, ax, onselect, rectprops):
        self.canvas = canvas
        self.ax = ax

        self.rect = None
        self.background = None
        self.pressv = None

        self.onselect = onselect

        self.buttonDown = False
        self.prev = 0

        self.canvas.mpl_connect('motion_notify_event', self.onmove)
        self.canvas.mpl_connect('button_press_event', self.press)
        self.canvas.mpl_connect('button_release_event', self.release)
        self.canvas.mpl_connect('draw_event', self.update_background)

        trans = blended_transform_factory(self.ax.transAxes,
                                          self.ax.transData)
        self.rect = Rectangle((0, 0), 1, 0, transform=trans, visible=False,
                              **rectprops)