Este TreeView muestra un TreeStore
from gi.repository import Gtk
from gi.repository import Pango
import sys
books = [["Tolstoy, Leo", "War and Peace", "Anna Karenina"],
["Shakespeare, William", "Hamlet", "Macbeth", "Othello"],
["Tolkien, J.R.R.", "The Lord of the Rings"]]
class MyWindow(Gtk.ApplicationWindow):
def __init__(self, app):
Gtk.Window.__init__(self, title="Library", application=app)
self.set_default_size(250, 100)
self.set_border_width(10)
# the data are stored in the model
# create a treestore with one column
store = Gtk.TreeStore(str)
for i in range(len(books)):
# the iter piter is returned when appending the author
piter = store.append(None, [books[i][0]])
# append the books as children of the author
j = 1
while j < len(books[i]):
store.append(piter, [books[i][j]])
j += 1
# the treeview shows the model
# create a treeview on the model store
view = Gtk.TreeView()
view.set_model(store)
# the cellrenderer for the column - text
renderer_books = Gtk.CellRendererText()
# the column is created
column_books = Gtk.TreeViewColumn(
"Books by Author", renderer_books, text=0)
# and it is appended to the treeview
view.append_column(column_books)
# the books are sortable by author
column_books.set_sort_column_id(0)
# add the treeview to the window
self.add(view)
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)
El widget «TreeView» está construido alrededor del diseño Modelo/Vista/Controlador: el Modelo almacena los datos; la Vista obtiene las notificaciones de cambio y muestra el contenido del modelo; el Controlador, finalmente, cambia el estado del modelo y le notifica a la vista de los cambios. Para más información y para una lista de métodos útiles para el «TreeModel» consulte la .
En este ejemplo se usa lo siguiente:
GtkTreeView
GtkTreeModel
GtkTreeStore
GtkCellRendererText
GtkTreeViewColumn