sugarlabs/sugar-toolkit-gtk3
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sugar-toolkit-gtk3/shell/view/Shell.py
Marco Pesenti Gritti 5623c8a3b1 Change the Activity execute method to add a result boolean (handle/not handled). 
When the camera key is pressed the Shell send and command to the active activity,
if that's not handled than it startup org.laptop.CameraActivity.
2006-12-21 12:37:02 +01:00

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# Copyright (C) 2006, Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import logging
import gtk
import gobject
import wnck
import dbus
import view.stylesheet
from sugar.graphics import style
from view.home.HomeWindow import HomeWindow
from sugar.presence import PresenceService
from view.ActivityHost import ActivityHost
from sugar.activity import ActivityFactory
from sugar.activity import Activity
from view.frame.Frame import Frame
from view.dconmanager import DCONManager
from _sugar import KeyGrabber
import sugar
class Shell(gobject.GObject):
__gsignals__ = {
'activity-opened': (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE, ([gobject.TYPE_PYOBJECT])),
'activity-changed': (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE, ([gobject.TYPE_PYOBJECT])),
'activity-closed': (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE, ([gobject.TYPE_PYOBJECT]))
}
def __init__(self, model):
gobject.GObject.__init__(self)
self._model = model
self._hosts = {}
self._screen = wnck.screen_get_default()
self._current_host = None
style.load_stylesheet(view.stylesheet)
self._dcon_manager = DCONManager()
self._key_grabber = KeyGrabber()
self._key_grabber.connect('key-pressed',
self.__global_key_pressed_cb)
self._key_grabber.connect('key-released',
self.__global_key_released_cb)
self._key_grabber.grab('F1')
self._key_grabber.grab('F2')
self._key_grabber.grab('F3')
self._key_grabber.grab('F4')
self._key_grabber.grab('F5')
self._key_grabber.grab('F6')
self._key_grabber.grab('F7')
self._key_grabber.grab('F8')
self._key_grabber.grab('0xDC') # Camera key
self._key_grabber.grab('0xE0') # Overlay key
self._key_grabber.grab('0x93') # Frame key
# For non-OLPC machines
self._key_grabber.grab('<shft><alt>F9')
self._key_grabber.grab('<shft><alt>F10')
self._home_window = HomeWindow(self)
self._home_window.show()
self.set_zoom_level(sugar.ZOOM_HOME)
self._screen.connect('window-opened', self.__window_opened_cb)
self._screen.connect('window-closed', self.__window_closed_cb)
self._screen.connect('active-window-changed',
self.__active_window_changed_cb)
self._frame = Frame(self)
self._frame.show_and_hide(3)
def _handle_camera_key(self):
if self._current_host:
if self._current_host.execute('camera', []):
return
self.start_activity('org.laptop.CameraActivity')
def __global_key_pressed_cb(self, grabber, key):
if key == 'F1':
self.set_zoom_level(sugar.ZOOM_MESH)
elif key == 'F2':
self.set_zoom_level(sugar.ZOOM_FRIENDS)
elif key == 'F3':
self.set_zoom_level(sugar.ZOOM_HOME)
elif key == 'F4':
self.set_zoom_level(sugar.ZOOM_ACTIVITY)
elif key == 'F5':
self._dcon_manager.decrease_brightness()
elif key == 'F6':
self._dcon_manager.increase_brightness()
elif key == 'F7':
self._dcon_manager.set_mode(DCONManager.COLOR_MODE)
elif key == 'F8':
self._dcon_manager.set_mode(DCONManager.BLACK_AND_WHITE_MODE)
elif key == '<shft><alt>F9':
self._frame.notify_key_press()
elif key == '<shft><alt>F10':
self.toggle_chat_visibility()
elif key == '0xDC': # Camera key
self._handle_camera_key()
elif key == '0xE0': # Overlay key
self.toggle_chat_visibility()
elif key == '0x93': # Frame key
self._frame.notify_key_press()
def __global_key_released_cb(self, grabber, key):
if key == '<shft><alt>F9':
self._frame.notify_key_release()
elif key == '0x93':
self._frame.notify_key_release()
def __window_opened_cb(self, screen, window):
logging.debug('Shell.__window_opened_cb')
if window.get_window_type() == wnck.WINDOW_NORMAL:
try:
activity_host = ActivityHost(self.get_model(), window)
except dbus.DBusException:
logging.debug('Shell.__window_opened_cb: opened unknown window ' +
window.get_name() + ' with xid ' +
str(window.get_xid()))
return
self._hosts[activity_host.get_xid()] = activity_host
self.emit('activity-opened', activity_host)
def __active_window_changed_cb(self, screen):
logging.debug('Shell.__active_window_changed_cb')
window = screen.get_active_window()
if not window or window.get_window_type() != wnck.WINDOW_NORMAL:
return
if not self._hosts.has_key(window.get_xid()):
return
activity_host = self._hosts[window.get_xid()]
current = self._model.get_current_activity()
if activity_host.get_id() == current:
return
self._set_current_activity(activity_host)
def __window_closed_cb(self, screen, window):
logging.debug('Shell.__window_closed_cb')
if window.get_window_type() != wnck.WINDOW_NORMAL:
return
if not self._hosts.has_key(window.get_xid()):
return
host = self._hosts[window.get_xid()]
host.destroy()
self.emit('activity-closed', host)
del self._hosts[window.get_xid()]
if len(self._hosts) == 0:
self._set_current_activity(None)
def _set_current_activity(self, host):
if host:
self._model.set_current_activity(host.get_id())
else:
self._model.set_current_activity(None)
if self._current_host:
self._current_host.set_active(False)
self._current_host = host
if self._current_host:
self._current_host.set_active(True)
self.emit('activity-changed', host)
def get_model(self):
return self._model
def join_activity(self, bundle_id, activity_id):
pservice = PresenceService.get_instance()
activity = self._get_activity(activity_id)
if activity:
activity.present()
else:
activity_ps = pservice.get_activity(activity_id)
if activity_ps:
# Get the service name for this activity, if
# we have a bundle on the system capable of handling
# this activity type
breg = self._model.get_bundle_registry()
bundle = breg.find_by_default_type(bundle_id)
if bundle:
serv_name = bundle.get_service_name()
try:
activity = ActivityFactory.create(serv_name)
except DBusException, e:
logging.error("Couldn't launch activity %s:\n%s" % (serv_name, e))
else:
logging.debug("Joining activity type %s id %s" % (serv_name, activity_id))
activity.join(activity_ps.object_path())
else:
logging.error("Couldn't find activity for type %s" % bundle_id)
else:
logging.error('Cannot start activity.')
def start_activity(self, activity_type):
logging.debug('Shell.start_activity')
activity = ActivityFactory.create(activity_type)
activity.start()
return activity
def set_zoom_level(self, level):
if level == sugar.ZOOM_ACTIVITY:
self._screen.toggle_showing_desktop(False)
else:
self._screen.toggle_showing_desktop(True)
self._home_window.set_zoom_level(level)
def get_current_activity(self):
activity_id = self._model.get_current_activity()
if activity_id:
return self._get_activity(activity_id)
else:
return None
def _get_activity(self, activity_id):
for host in self._hosts.values():
if host.get_id() == activity_id:
return host
return None
def toggle_chat_visibility(self):
act = self.get_current_activity()
if not act:
return
is_visible = self._frame.is_visible()
if act.is_chat_visible():
frame_was_visible = act.chat_hide()
if not frame_was_visible:
self._frame.do_slide_out()
else:
if not is_visible:
self._frame.do_slide_in()
act.chat_show(is_visible)
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