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Diffstat (limited to 'examples/demo/demos/menus.py')
| -rw-r--r-- | examples/demo/demos/menus.py | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/examples/demo/demos/menus.py b/examples/demo/demos/menus.py new file mode 100644 index 00000000..fbc2daa5 --- /dev/null +++ b/examples/demo/demos/menus.py @@ -0,0 +1,133 @@ +#!/usr/bin/env python +# -*- Mode: Python; py-indent-offset: 4 -*- +# vim: tabstop=4 shiftwidth=4 expandtab +# +# Copyright (C) 2010 Red Hat, Inc., John (J5) Palmieri <johnp@redhat.com> +# +# This library is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation; either +# version 2.1 of the License, or (at your option) any later version. +# +# This library is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public +# License along with this library; if not, write to the Free Software +# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 +# USA + +title = "Menus" +description = """There are several widgets involved in displaying menus. The +GtkMenuBar widget is a menu bar, which normally appears horizontally at the top +of an application, but can also be layed out vertically. The GtkMenu widget is +the actual menu that pops up. Both GtkMenuBar and GtkMenu are subclasses of +GtkMenuShell; a GtkMenuShell contains menu items (GtkMenuItem). Each menu item +contains text and/or images and can be selected by the user. There are several +kinds of menu item, including plain GtkMenuItem, GtkCheckMenuItem which can be +checked/unchecked, GtkRadioMenuItem which is a check menu item that's in a +mutually exclusive group, GtkSeparatorMenuItem which is a separator bar, +GtkTearoffMenuItem which allows a GtkMenu to be torn off, and GtkImageMenuItem +which can place a GtkImage or other widget next to the menu text. A GtkMenuItem +can have a submenu, which is simply a GtkMenu to pop up when the menu item is +selected. Typically, all menu items in a menu bar have submenus. GtkUIManager +provides a higher-level interface for creating menu bars and menus; while you +can construct menus manually, most people don't do that. There's a separate demo +for GtkUIManager. +""" + +from gi.repository import Gtk + + +class MenusApp: + def __init__(self): + self.window = Gtk.Window() + self.window.set_title('Menus') + self.window.connect('destroy', Gtk.main_quit) + + accel_group = Gtk.AccelGroup() + self.window.add_accel_group(accel_group) + self.window.set_border_width(0) + + box = Gtk.HBox() + self.window.add(box) + + box1 = Gtk.VBox() + box.add(box1) + + menubar = Gtk.MenuBar() + box1.pack_start(menubar, False, True, 0) + + menuitem = Gtk.MenuItem(label='test\nline2') + menuitem.set_submenu(self.create_menu(3, True)) + menubar.append(menuitem) + + menuitem = Gtk.MenuItem(label='foo') + menuitem.set_submenu(self.create_menu(4, True)) + menuitem.set_right_justified(True) + menubar.append(menuitem) + + box2 = Gtk.VBox(spacing=10) + box2.set_border_width(10) + box1.pack_start(box2, False, True, 0) + + button = Gtk.Button(label='Flip') + button.connect('clicked', self.change_orientation, menubar) + box2.pack_start(button, True, True, 0) + + button = Gtk.Button(label='Close') + button.connect('clicked', lambda x: self.window.destroy()) + box2.pack_start(button, True, True, 0) + button.set_can_default(True) + + self.window.show_all() + + def create_menu(self, depth, tearoff): + if depth < 1: + return None + + menu = Gtk.Menu() + + if tearoff: + menuitem = Gtk.TearoffMenuItem() + menu.append(menuitem) + + i = 0 + j = 1 + while i < 5: + label = 'item %2d - %d' % (depth, j) + # we should be adding this to a group but the group API + # isn't bindable - we need something more like the + # Gtk.RadioAction API + menuitem = Gtk.RadioMenuItem(label=label) + menu.append(menuitem) + + if i == 3: + menuitem.set_sensitive(False) + + menuitem.set_submenu(self.create_menu(depth - 1, True)) + + i += 1 + j += 1 + + return menu + + def change_orientation(self, button, menubar): + parent = menubar.get_parent() + orientation = parent.get_orientation() + parent.set_orientation(1 - orientation) + + if orientation == Gtk.Orientation.VERTICAL: + menubar.props.pack_direction = Gtk.PackDirection.TTB + else: + menubar.props.pack_direction = Gtk.PackDirection.LTR + + +def main(demoapp=None): + MenusApp() + Gtk.main() + +if __name__ == '__main__': + main() |