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from __future__ import print_function
import matplotlib
matplotlib.use('GTK')
from matplotlib.figure import Figure
from matplotlib.axes import Subplot
from matplotlib.backends.backend_gtkagg import FigureCanvasGTKAgg as FigureCanvas
from matplotlib.backends.backend_gtkagg import NavigationToolbar2GTKAgg as NavigationToolbar
from matplotlib.widgets import SpanSelector
from numpy import arange, sin, pi
import gtk
import gtk.glade
def simple_msg(msg, parent=None, title=None):
dialog = gtk.MessageDialog(
parent=None,
type=gtk.MESSAGE_INFO,
buttons=gtk.BUTTONS_OK,
message_format=msg)
if parent is not None:
dialog.set_transient_for(parent)
if title is not None:
dialog.set_title(title)
dialog.show()
dialog.run()
dialog.destroy()
return None
class GladeHandlers(object):
def on_buttonClickMe_clicked(event):
simple_msg('Nothing to say, really',
parent=widgets['windowMain'],
title='Thanks!')
class WidgetsWrapper(object):
def __init__(self):
self.widgets = gtk.glade.XML('mpl_with_glade.glade')
self.widgets.signal_autoconnect(GladeHandlers.__dict__)
self['windowMain'].connect('destroy', lambda x: gtk.main_quit())
self['windowMain'].move(10, 10)
self.figure = Figure(figsize=(8, 6), dpi=72)
self.axis = self.figure.add_subplot(111)
t = arange(0.0, 3.0, 0.01)
s = sin(2*pi*t)
self.axis.plot(t, s)
self.axis.set_xlabel('time (s)')
self.axis.set_ylabel('voltage')
self.canvas = FigureCanvas(self.figure) # a gtk.DrawingArea
self.canvas.show()
self.canvas.set_size_request(600, 400)
self.canvas.set_events(
gtk.gdk.BUTTON_PRESS_MASK |
gtk.gdk.KEY_PRESS_MASK |
gtk.gdk.KEY_RELEASE_MASK
)
self.canvas.set_flags(gtk.HAS_FOCUS | gtk.CAN_FOCUS)
self.canvas.grab_focus()
def keypress(widget, event):
print('key press')
def buttonpress(widget, event):
print('button press')
self.canvas.connect('key_press_event', keypress)
self.canvas.connect('button_press_event', buttonpress)
def onselect(xmin, xmax):
print(xmin, xmax)
span = SpanSelector(self.axis, onselect, 'horizontal', useblit=False,
rectprops=dict(alpha=0.5, facecolor='red'))
self['vboxMain'].pack_start(self.canvas, True, True)
self['vboxMain'].show()
# below is optional if you want the navigation toolbar
self.navToolbar = NavigationToolbar(self.canvas, self['windowMain'])
self.navToolbar.lastDir = '/var/tmp/'
self['vboxMain'].pack_start(self.navToolbar)
self.navToolbar.show()
sep = gtk.HSeparator()
sep.show()
self['vboxMain'].pack_start(sep, True, True)
self['vboxMain'].reorder_child(self['buttonClickMe'], -1)
def __getitem__(self, key):
return self.widgets.get_widget(key)
widgets = WidgetsWrapper()
gtk.main()
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