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Sample GTK+3 program to explore use of GMenuModel
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Kovid Goyal
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commit
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src/calibre/gui2/dbus_export/gtk.py
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259
src/calibre/gui2/dbus_export/gtk.py
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#!/usr/bin/env python
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# vim:fileencoding=utf-8
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from __future__ import (unicode_literals, division, absolute_import,
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print_function)
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__license__ = 'GPL v3'
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__copyright__ = '2014, Kovid Goyal <kovid at kovidgoyal.net>'
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# Demo program to explore the GTK DBus interface, which is only partially documented
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# at https://wiki.gnome.org/Projects/GLib/GApplication/DBusAPI
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import sys, dbus, subprocess
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from threading import Thread
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from pprint import pformat
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from gi.repository import Gtk, Gdk, GdkX11 # noqa
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UI_INFO = """
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<ui>
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<menubar name='MenuBar'>
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<menu action='FileMenu'>
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<menu action='FileNew'>
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<menuitem action='FileNewStandard' />
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<menuitem action='FileNewFoo' />
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<menuitem action='FileNewGoo' />
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</menu>
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<separator />
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<menuitem action='FileQuit' />
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</menu>
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<menu action='EditMenu'>
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<menuitem action='EditCopy' />
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<menuitem action='EditPaste' />
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<menuitem action='EditSomething' />
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</menu>
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<menu action='ChoicesMenu'>
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<menuitem action='ChoiceOne'/>
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<menuitem action='ChoiceTwo'/>
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<separator />
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<menuitem action='ChoiceThree'/>
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</menu>
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</menubar>
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<toolbar name='ToolBar'>
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<toolitem action='FileNewStandard' />
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<toolitem action='FileQuit' />
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</toolbar>
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<popup name='PopupMenu'>
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<menuitem action='EditCopy' />
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<menuitem action='EditPaste' />
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<menuitem action='EditSomething' />
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</popup>
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</ui>
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"""
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class MenuExampleWindow(Gtk.ApplicationWindow):
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def __init__(self, app):
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Gtk.Window.__init__(self, application=app, title="Menu Example")
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self.set_default_size(800, 600)
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self.scroll = s = Gtk.ScrolledWindow()
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s.set_hexpand(True), s.set_vexpand(True)
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s.set_policy(Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.AUTOMATIC)
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s.set_min_content_height(450)
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self.label = la = Gtk.TextView()
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la.set_text = la.get_buffer().set_text
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s.add(la)
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action_group = Gtk.ActionGroup("my_actions")
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self.add_file_menu_actions(action_group)
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self.add_edit_menu_actions(action_group)
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self.add_choices_menu_actions(action_group)
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uimanager = self.create_ui_manager()
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uimanager.insert_action_group(action_group)
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menubar = uimanager.get_widget("/MenuBar")
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box = Gtk.Box(orientation=Gtk.Orientation.VERTICAL)
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box.pack_start(menubar, False, False, 0)
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toolbar = uimanager.get_widget("/ToolBar")
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box.pack_start(toolbar, False, False, 0)
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eventbox = Gtk.EventBox()
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eventbox.connect("button-press-event", self.on_button_press_event)
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box.pack_start(s, False, False, 0)
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box.pack_start(eventbox, True, True, 0)
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label = Gtk.Label("Right-click to see the popup menu.")
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eventbox.add(label)
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self.popup = uimanager.get_widget("/PopupMenu")
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self.add(box)
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def add_file_menu_actions(self, action_group):
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action_filemenu = Gtk.Action("FileMenu", "File", None, None)
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action_group.add_action(action_filemenu)
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action_filenewmenu = Gtk.Action("FileNew", None, None, Gtk.STOCK_NEW)
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action_group.add_action(action_filenewmenu)
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action_new = Gtk.Action("FileNewStandard", "_New",
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"Create a new file", Gtk.STOCK_NEW)
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action_new.connect("activate", self.on_menu_file_new_generic)
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action_group.add_action_with_accel(action_new, '<Ctrl>N')
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action_group.add_actions([
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("FileNewFoo", None, "New Foo", None, "Create new foo",
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self.on_menu_file_new_generic),
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("FileNewGoo", None, "_New Goo", None, "Create new goo",
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self.on_menu_file_new_generic),
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])
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action_filequit = Gtk.Action("FileQuit", None, None, Gtk.STOCK_QUIT)
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action_filequit.connect("activate", self.on_menu_file_quit)
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action_group.add_action_with_accel(action_filequit, '<Ctrl>Q')
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def add_edit_menu_actions(self, action_group):
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action_group.add_actions([
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("EditMenu", None, "Edit"),
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("EditCopy", Gtk.STOCK_COPY, None, None, None,
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self.on_menu_others),
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("EditPaste", Gtk.STOCK_PASTE, None, None, None,
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self.on_menu_others),
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("EditSomething", None, "Something", "<control><alt>S", None,
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self.on_menu_others)
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])
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def add_choices_menu_actions(self, action_group):
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action_group.add_action(Gtk.Action("ChoicesMenu", "Choices", None,
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None))
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action_group.add_radio_actions([
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("ChoiceOne", None, "One", None, None, 1),
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("ChoiceTwo", None, "Two", None, None, 2)
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], 1, self.on_menu_choices_changed)
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three = Gtk.ToggleAction("ChoiceThree", "Three", None, None)
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three.connect("toggled", self.on_menu_choices_toggled)
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action_group.add_action(three)
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def create_ui_manager(self):
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uimanager = Gtk.UIManager()
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# Throws exception if something went wrong
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uimanager.add_ui_from_string(UI_INFO)
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# Add the accelerator group to the toplevel window
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accelgroup = uimanager.get_accel_group()
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self.add_accel_group(accelgroup)
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return uimanager
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def on_menu_file_new_generic(self, widget):
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print("A File|New menu item was selected.")
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def on_menu_file_quit(self, widget):
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app.quit()
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def on_menu_others(self, widget):
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print("Menu item " + widget.get_name() + " was selected")
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def on_menu_choices_changed(self, widget, current):
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print(current.get_name() + " was selected.")
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def on_menu_choices_toggled(self, widget):
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if widget.get_active():
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print(widget.get_name() + " activated")
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else:
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print(widget.get_name() + " deactivated")
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def on_button_press_event(self, widget, event):
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# Check if right mouse button was preseed
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if event.type == Gdk.EventType.BUTTON_PRESS and event.button == 3:
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self.popup.popup(None, None, None, None, event.button, event.time)
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return True # event has been handled
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def convert(v):
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if isinstance(v, basestring):
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return unicode(v)
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if isinstance(v, dbus.Struct):
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return tuple(convert(val) for val in v)
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if isinstance(v, list):
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return [convert(val) for val in v]
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if isinstance(v, dict):
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return {convert(k):convert(val) for k, val in v.iteritems()}
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if isinstance(v, dbus.Boolean):
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return bool(v)
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if isinstance(v, (dbus.UInt32, dbus.UInt16)):
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return int(v)
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return v
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class MyApplication(Gtk.Application):
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def do_activate(self):
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win = self.window = MenuExampleWindow(self)
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win.show_all()
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self.get_xprop_data()
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Thread(target=self.print_dbus_data).start()
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def get_xprop_data(self):
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property_names = {GdkX11.x11_get_xatom_name(i) for i in xrange(691)}
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property_names = {name for name in property_names if
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name.startswith('_GTK') or name.startswith('_UNITY') or name.startswith('_GNOME')}
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props = []
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for name in sorted(property_names):
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props.append(subprocess.check_output(['xprop', '-id', str(self.window.get_window().get_xid()), name]))
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raw = props[-1]
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if raw.startswith('_UNITY_OBJECT_PATH'):
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self.object_path = eval(raw.split('=')[-1].strip())
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elif raw.startswith('_GTK_UNIQUE_BUS_NAME'):
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self.bus_name = eval(raw.split('=')[-1].strip())
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self.xprop_data = '\n'.join(props)
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def print(self, *args):
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self.data.append(' '.join(map(str, args)))
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def print_menu_start(self, bus, group=0, seen=None):
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groups = set()
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seen = seen or set()
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seen.add(group)
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print = self.print
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print ('\nMenu description (Group %d)' % group)
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for item in bus.call_blocking(self.bus_name, self.object_path, 'org.gtk.Menus', 'Start', 'au', ([group],)):
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print ('Subscription group:', item[0])
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print ('Menu number:', item[1])
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for menu_item in item[2]:
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menu_item = {unicode(k):convert(v) for k, v in menu_item.iteritems()}
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if ':submenu' in menu_item:
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groups.add(menu_item[':submenu'][0])
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if ':section' in menu_item:
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groups.add(menu_item[':section'][0])
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print (pformat(menu_item))
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for other_group in sorted(groups - seen):
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self.print_menu_start(bus, other_group, seen)
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def print_dbus_data(self):
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bus = dbus.SessionBus()
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self.data = []
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self.get_actions_description(bus)
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self.print_menu_start(bus)
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self.data.append(self.xprop_data)
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self.window.label.set_text('\n'.join(self.data))
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def get_actions_description(self, bus):
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print = self.print
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print('\nActions description')
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self.actions_desc = d = {}
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for name, data in bus.call_blocking(self.bus_name, self.object_path, 'org.gtk.Actions', 'DescribeAll', '', ()).iteritems():
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d[name] = {'enabled':convert(data[0]), 'param type': convert(data[1]), 'state':convert(data[2])}
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print ('Name:', name)
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print (pformat(d[name]))
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def do_startup(self):
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Gtk.Application.do_startup(self)
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app = MyApplication(application_id='com.calibre-ebook.test-gtk')
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sys.exit(app.run(sys.argv))
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