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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
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