<?xml version="1.0" encoding="utf-8"?>
<page xmlns="http://projectmallard.org/1.0/" xmlns:its="http://www.w3.org/2005/11/its" xmlns:xi="http://www.w3.org/2001/XInclude" type="guide" style="task" id="switch.py" xml:lang="fr">
<info>
<title type="text">Switch (Python)</title>
<link type="guide" xref="beginner.py#buttons"/>
<link type="next" xref="radiobutton.py"/>
<revision version="0.1" date="2012-05-24" status="draft"/>
<credit type="author copyright">
<name>Marta Maria Casetti</name>
<email its:translate="no">mmcasetti@gmail.com</email>
<years>2012</years>
</credit>
<desc>Un bouton de basculement du style « interrupteur électrique »</desc>
<mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">
<mal:name>Luc Rebert,</mal:name>
<mal:email>traduc@rebert.name</mal:email>
<mal:years>2011</mal:years>
</mal:credit>
<mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">
<mal:name>Alain Lojewski,</mal:name>
<mal:email>allomervan@gmail.com</mal:email>
<mal:years>2011-2012</mal:years>
</mal:credit>
<mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">
<mal:name>Luc Pionchon</mal:name>
<mal:email>pionchon.luc@gmail.com</mal:email>
<mal:years>2011</mal:years>
</mal:credit>
<mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">
<mal:name>Bruno Brouard</mal:name>
<mal:email>annoa.b@gmail.com</mal:email>
<mal:years>2011-12</mal:years>
</mal:credit>
<mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">
<mal:name>Luis Menina</mal:name>
<mal:email>liberforce@freeside.fr</mal:email>
<mal:years>2014</mal:years>
</mal:credit>
</info>
<title>Switch (interrupteur)</title>
<media type="image" mime="image/png" style="floatend" src="media/switch_off.png"/>
<media type="image" mime="image/png" src="media/switch_on.png"/>
<p>Cet interrupteur fait apparaître et disparaître le titre.</p>
<links type="section"/>
<section id="code">
<title>Code utilisé pour générer cet exemple</title>
<code mime="text/x-python" style="numbered">from gi.repository import Gtk
import sys
class MyWindow(Gtk.ApplicationWindow):
# a window
def __init__(self, app):
Gtk.Window.__init__(self, title="Switch Example", application=app)
self.set_default_size(300, 100)
self.set_border_width(10)
# a switch
switch = Gtk.Switch()
# turned on by default
switch.set_active(True)
# connect the signal notify::active emitted by the switch
# to the callback function activate_cb
switch.connect("notify::active", self.activate_cb)
# a label
label = Gtk.Label()
label.set_text("Title")
# a grid to allocate the widgets
grid = Gtk.Grid()
grid.set_column_spacing(10)
grid.attach(label, 0, 0, 1, 1)
grid.attach(switch, 1, 0, 1, 1)
# add the grid to the window
self.add(grid)
# Callback function. Since the signal is notify::active
# we need the argument 'active'
def activate_cb(self, button, active):
# if the button (i.e. the switch) is active, set the title
# of the window to "Switch Example"
if button.get_active():
self.set_title("Switch Example")
# else, set it to "" (empty string)
else:
self.set_title("")
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)
</code>
</section>
<section id="methods">
<title>Méthodes utiles pour un élément graphique Switch</title>
<p>In line 17 the signal <code>"notify::active"</code> is connected to the callback function <code>activate_cb()</code> using <code><var>widget</var>.connect(<var>signal</var>, <var>callback function</var>)</code>. See <link xref="signals-callbacks.py"/> for a more detailed explanation.</p>
</section>
<section id="references">
<title>Références API</title>
<p>Dans cet exemple, les éléments suivants sont utilisés :</p>
<list>
<item><p><link href="http://developer.gnome.org/gtk3/unstable/GtkSwitch.html">GtkSwitch</link></p></item>
<item><p><link href="http://developer.gnome.org/gtk3/unstable/GtkLabel.html">GtkLabel</link></p></item>
<item><p><link href="http://developer.gnome.org/gtk3/unstable/GtkGrid.html">GtkGrid</link></p></item>
</list>
</section>
</page>