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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
import gtk
class MenuShell(gobject.GObject):
__gsignals__ = {
'activated': (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE, ([])),
'deactivated': (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE, ([])),
}
AUTO = 0
LEFT = 1
RIGHT = 2
TOP = 3
BOTTOM = 4
def __init__(self, parent_canvas):
gobject.GObject.__init__(self)
self._parent_canvas = parent_canvas
self._menu_controller = None
self._position = MenuShell.AUTO
def set_position(self, position):
self._position = position
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_rect(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
[w, h] = item.get_allocation()
return [x, y, w, h]
def get_position(self, menu, item):
[item_x, item_y, item_w, item_h] = self._get_item_rect(item)
[menu_w, menu_h] = menu.size_request()
left_x = item_x - menu_w
left_y = item_y
right_x = item_x + item_w
right_y = item_y
top_x = item_x
top_y = item_y - menu_h
bottom_x = item_x
bottom_y = item_y + item_h
if self._position == MenuShell.LEFT:
[x, y] = [left_x, left_y]
elif self._position == MenuShell.RIGHT:
[x, y] = [right_x, right_y]
elif self._position == MenuShell.TOP:
[x, y] = [top_x, top_y]
elif self._position == MenuShell.BOTTOM:
[x, y] = [bottom_x, bottom_y]
elif self._position == MenuShell.AUTO:
[x, y] = [right_x, right_y]
if x + menu_w > gtk.gdk.screen_width():
[x, y] = [left_x, left_y]
x = min(x, gtk.gdk.screen_width() - menu_w)
x = max(0, x)
y = min(y, gtk.gdk.screen_height() - menu_h)
y = max(0, y)
return [x, y]
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