Enaml MPLCanvas Event Demo

picker_demo.enaml

# -*- coding: utf-8 -*-
"""
Created on Fri Dec 06 06:07:21 2013

@author: Steven Silvester <steven.silvester@ieee.org>
@license: MIT
"""
import functools

import matplotlib.pyplot as plt
import numpy as np
from numpy.random import rand

from enaml.widgets.api import MainWindow, Label, MPLCanvas, Container


x, y, c, s = rand(4, 100)
fig, ax = plt.subplots()
col = ax.scatter(x, y, 100*s, c, picker=True)


def update_label(window, event):
    ind = event.ind
    label = window.find('picker_label')
    label.text = '%s %s %s' % (ind, np.take(x, ind), np.take(y, ind))


enamldef Main(MainWindow):
    activated ::
        fig.canvas.mpl_connect('pick_event', 
                               functools.partial(update_label, self))
    Container:
        MPLCanvas:
            figure = fig
        Label:
            name = 'picker_label'