This TreeView displays a simple ListStore with the selection "changed" signal connected.
from gi.repository import Gtk
from gi.repository import Pango
import sys
columns = ["First Name",
"Last Name",
"Phone Number"]
phonebook = [["Jurg", "Billeter", "555-0123"],
["Johannes", "Schmid", "555-1234"],
["Julita", "Inca", "555-2345"],
["Javier", "Jardon", "555-3456"],
["Jason", "Clinton", "555-4567"],
["Random J.", "Hacker", "555-5678"]]
class MyWindow(Gtk.ApplicationWindow):
def __init__(self, app):
Gtk.Window.__init__(self, title="My Phone Book", application=app)
self.set_default_size(250, 100)
self.set_border_width(10)
# the data in the model (three strings for each row, one for each
# column)
listmodel = Gtk.ListStore(str, str, str)
# append the values in the model
for i in range(len(phonebook)):
listmodel.append(phonebook[i])
# a treeview to see the data stored in the model
view = Gtk.TreeView(model=listmodel)
# for each column
for i, column in enumerate(columns):
# cellrenderer to render the text
cell = Gtk.CellRendererText()
# the text in the first column should be in boldface
if i == 0:
cell.props.weight_set = True
cell.props.weight = Pango.Weight.BOLD
# the column is created
col = Gtk.TreeViewColumn(column, cell, text=i)
# and it is appended to the treeview
view.append_column(col)
# when a row is selected, it emits a signal
view.get_selection().connect("changed", self.on_changed)
# the label we use to show the selection
self.label = Gtk.Label()
self.label.set_text("")
# a grid to attach the widgets
grid = Gtk.Grid()
grid.attach(view, 0, 0, 1, 1)
grid.attach(self.label, 0, 1, 1, 1)
# attach the grid to the window
self.add(grid)
def on_changed(self, selection):
# get the model and the iterator that points at the data in the model
(model, iter) = selection.get_selected()
# set the label to a new value depending on the selection
self.label.set_text("\n %s %s %s" %
(model[iter][0], model[iter][1], model[iter][2]))
return True
class MyApplication(Gtk.Application):
def __init__(self):
Gtk.Application.__init__(self)
def do_activate(self):
win = MyWindow(self)
win.show_all()
def do_startup(self):
Gtk.Application.do_startup(self)
app = MyApplication()
exit_status = app.run(sys.argv)
sys.exit(exit_status)
The TreeView widget is designed around a Model/View/Controller design: the Model stores the data; the View gets change notifications and displays the content of the model; the Controller, finally, changes the state of the model and notifies the view of these changes. For more information, and for a list of useful methods for TreeModel, see .
In line 44 the "changed"
signal is connected to the callback function on_changed()
using widget.connect(signal, callback function)
. See for a more detailed explanation.
In this sample we used the following:
GtkTreeView
GtkTreeModel
GtkListStore
GtkCellRendererText
GtkTreeViewColumn
pygobject - Python bindings for GObject Introspection
Fonts