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# Copyright (C) 2006, Red Hat, Inc.
#
# 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 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., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
import gobject
class MenuShell(gobject.GObject):
__gsignals__ = {
'activated': (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE, ([])),
'deactivated': (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE, ([])),
}
def __init__(self, parent_canvas):
gobject.GObject.__init__(self)
self._parent_canvas = parent_canvas
self._menu_controller = None
def is_active(self):
return (self._menu_controller != None)
def set_active(self, controller):
if controller == None:
self.emit('deactivated')
else:
self.emit('activated')
if self._menu_controller:
self._menu_controller.popdown()
self._menu_controller = controller
def _get_item_origin(self, item):
[x, y] = item.get_context().translate_to_widget(item)
[origin_x, origin_y] = self._parent_canvas.window.get_origin()
x += origin_x
y += origin_y
return [x, y]
def get_position(self, menu, item):
[x, y] = self._get_item_origin(item)
[width, height] = item.get_allocation()
[canvas_x, canvas_y] = self._parent_canvas.window.get_origin()
canvas_rect = self._parent_canvas.get_allocation()
[menu_w, menu_h] = menu.size_request()
menu_x = x
menu_y = y + height
if (menu_x + menu_w > canvas_x) and \
(menu_y < canvas_y + canvas_rect.height):
menu_x = x - menu_w
menu_y = y
return [menu_x, menu_y]
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