Note
Go to the end to download the full example code
GTK3 spreadsheet#
Example of embedding Matplotlib in an application and interacting with a treeview to store data. Double-click on an entry to update plot data.
import gi
gi.require_version('Gtk', '3.0')
gi.require_version('Gdk', '3.0')
from gi.repository import Gdk, Gtk
from numpy.random import random
from matplotlib.backends.backend_gtk3agg import FigureCanvas # or gtk3cairo.
from matplotlib.figure import Figure
class DataManager(Gtk.Window):
num_rows, num_cols = 20, 10
data = random((num_rows, num_cols))
def __init__(self):
super().__init__()
self.set_default_size(600, 600)
self.connect('destroy', lambda win: Gtk.main_quit())
self.set_title('GtkListStore demo')
self.set_border_width(8)
vbox = Gtk.VBox(homogeneous=False, spacing=8)
self.add(vbox)
label = Gtk.Label(label='Double click a row to plot the data')
vbox.pack_start(label, False, False, 0)
sw = Gtk.ScrolledWindow()
sw.set_shadow_type(Gtk.ShadowType.ETCHED_IN)
sw.set_policy(Gtk.PolicyType.NEVER, Gtk.PolicyType.AUTOMATIC)
vbox.pack_start(sw, True, True, 0)
model = self.create_model()
self.treeview = Gtk.TreeView(model=model)
# Matplotlib stuff
fig = Figure(figsize=(6, 4))
self.canvas = FigureCanvas(fig) # a Gtk.DrawingArea
vbox.pack_start(self.canvas, True, True, 0)
ax = fig.add_subplot()
self.line, = ax.plot(self.data[0, :], 'go') # plot the first row
self.treeview.connect('row-activated', self.plot_row)
sw.add(self.treeview)
self.add_columns()
self.add_events(Gdk.EventMask.BUTTON_PRESS_MASK |
Gdk.EventMask.KEY_PRESS_MASK |
Gdk.EventMask.KEY_RELEASE_MASK)
def plot_row(self, treeview, path, view_column):
ind, = path # get the index into data
points = self.data[ind, :]
self.line.set_ydata(points)
self.canvas.draw()
def add_columns(self):
for i in range(self.num_cols):
column = Gtk.TreeViewColumn(str(i), Gtk.CellRendererText(), text=i)
self.treeview.append_column(column)
def create_model(self):
types = [float] * self.num_cols
store = Gtk.ListStore(*types)
for row in self.data:
store.append(tuple(row))
return store
manager = DataManager()
manager.show_all()
Gtk.main()