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