1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
# 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 hippo
import gobject
from sugar.graphics.canvasicon import CanvasIcon
class _MenuStrategy:
def get_menu_position(self, menu, item):
return item.get_context().translate_to_widget(item)
class MenuIcon(CanvasIcon):
def __init__(self, menu_shell, **kwargs):
CanvasIcon.__init__(self, **kwargs)
self._menu_shell = menu_shell
self._menu = None
self._hover_menu = False
self._popdown_on_leave = False
self._popdown_sid = 0
self._menu_strategy = _MenuStrategy()
self.connect('motion-notify-event', self._motion_notify_event_cb)
def popdown(self):
if self._menu:
self._menu.destroy()
self._menu = None
self._menu_shell.set_active(None)
def set_menu_strategy(self, strategy):
self._menu_strategy = strategy
def _popup(self):
self.popdown()
self._menu_shell.set_active(None)
self._menu = self.create_menu()
self._menu.connect('enter-notify-event',
self._menu_enter_notify_event_cb)
self._menu.connect('leave-notify-event',
self._menu_leave_notify_event_cb)
strategy = self._menu_strategy
[x, y] = strategy.get_menu_position(self._menu, self)
self._menu.move(x, y)
self._menu.show()
self._menu_shell.set_active(self)
def _menu_enter_notify_event_cb(self, widget, event):
self._hover_menu = True
def _menu_leave_notify_event_cb(self, widget, event):
self._hover_menu = False
if self._popdown_on_leave:
self.popdown()
def _start_popdown_timeout(self):
self._stop_popdown_timeout()
self._popdown_sid = gobject.timeout_add(1000, self._popdown_timeout_cb)
def _stop_popdown_timeout(self):
if self._popdown_sid > 0:
gobject.source_remove(self._popdown_sid)
self._popdown_sid = 0
def _motion_notify_event_cb(self, item, event):
if event.detail == hippo.MOTION_DETAIL_ENTER:
self._motion_notify_enter()
elif event.detail == hippo.MOTION_DETAIL_LEAVE:
self._motion_notify_leave()
def _motion_notify_enter(self):
self._stop_popdown_timeout()
self._popup()
def _motion_notify_leave(self):
self._start_popdown_timeout()
def _popdown_timeout_cb(self):
self._popdown_sid = 0
if not self._hover_menu:
self.popdown()
else:
self._popdown_on_leave = True
return False
|