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# Copyright (C) 2006-2007, 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 os
import signal
import logging
import dbus
import gobject
import gtk
from hardware import hardwaremanager
from model.shellmodel import ShellModel
from sugar._sugaruiext import KeyGrabber
_BRIGHTNESS_STEP = 2
_VOLUME_STEP = 10
_actions_table = {
'F1' : 'zoom_mesh',
'F2' : 'zoom_friends',
'F3' : 'zoom_home',
'F4' : 'zoom_activity',
'F9' : 'brightness_down',
'F10' : 'brightness_up',
'F11' : 'volume_down',
'F12' : 'volume_up',
'<alt>1' : 'screenshot',
'<alt>equal' : 'console',
'<alt>0' : 'console',
'<alt>f' : 'frame',
'0x93' : 'frame',
'<alt>o' : 'overlay',
'0xE0' : 'overlay',
'0xEB' : 'rotate',
'<alt>r' : 'rotate',
'0xEC' : 'keyboard_brightness',
'<alt>Tab' : 'home',
'<alt>q' : 'quit_emulator',
}
class KeyHandler(object):
def __init__(self, shell):
self._shell = shell
self._screen_rotation = 0
self._key_pressed = None
self._keycode_pressed = 0
self._keystate_pressed = 0
self._key_grabber = KeyGrabber()
self._key_grabber.connect('key-pressed',
self._key_pressed_cb)
self._key_grabber.connect('key-released',
self._key_released_cb)
for key in _actions_table.keys():
self._key_grabber.grab(key)
def _change_volume(self, step):
hw_manager = hardwaremanager.get_manager()
volume = hw_manager.get_volume() + step
volume = min(max(0, volume), 100)
hw_manager.set_volume(volume)
hw_manager.set_mute(volume == 0)
def _change_brightness(self, step):
hw_manager = hardwaremanager.get_manager()
level = hw_manager.get_display_brightness() + step
level = min(max(0, level), 15)
hw_manager.set_display_brightness(level)
if level == 0:
hw_manager.set_display_mode(hardwaremanager.B_AND_W_MODE)
else:
hw_manager.set_display_mode(hardwaremanager.COLOR_MODE)
def handle_zoom_mesh(self):
self._shell.set_zoom_level(ShellModel.ZOOM_MESH)
def handle_zoom_friends(self):
self._shell.set_zoom_level(ShellModel.ZOOM_FRIENDS)
def handle_zoom_home(self):
self._shell.set_zoom_level(ShellModel.ZOOM_HOME)
def handle_zoom_activity(self):
self._shell.set_zoom_level(ShellModel.ZOOM_ACTIVITY)
def handle_brightness_up(self):
self._change_brightness(_BRIGHTNESS_STEP)
def handle_brightness_down(self):
self._change_brightness(-_BRIGHTNESS_STEP)
def handle_volume_up(self):
self._change_volume(_VOLUME_STEP)
def handle_volume_down(self):
self._change_volume(-_VOLUME_STEP)
def handle_screenshot(self):
self._shell.take_screenshot()
def handle_console(self):
gobject.idle_add(self._toggle_console_visibility_cb)
def handle_frame(self):
self._shell.get_frame().notify_key_press()
def handle_overlay(self):
self._shell.toggle_chat_visibility()
def handle_keyboard_brightness(self):
hw_manager = hardwaremanager.get_manager()
if hw_manager:
hw_manager.toggle_keyboard_brightness()
def handle_rotate(self):
states = [ 'normal', 'left', 'inverted', 'right']
self._screen_rotation += 1
if self._screen_rotation == len(states):
self._screen_rotation = 0
gobject.spawn_async(['xrandr', '-o', states[self._screen_rotation]],
flags=gobject.SPAWN_SEARCH_PATH)
def handle_quit_emulator(self):
if os.environ.has_key('SUGAR_EMULATOR_PID'):
pid = int(os.environ['SUGAR_EMULATOR_PID'])
os.kill(pid, signal.SIGTERM)
def handle_home(self):
# FIXME: finish alt+tab support
pass
def _key_pressed_cb(self, grabber, keycode, state):
key = grabber.get_key(keycode, state)
logging.debug('_key_pressed_cb: %i %i %s' % (keycode, state, key))
if key:
self._key_pressed = key
self._keycode_pressed = keycode
self._keystate_pressed = state
"""
status = gtk.gdk.keyboard_grab(gtk.gdk.get_default_root_window(),
owner_events=False, time=0L)
if status != gtk.gdk.GRAB_SUCCESS:
logging.error("KeyHandler._key_pressed_cb(): keyboard grab failed: " + status)
"""
action = _actions_table[key]
method = getattr(self, 'handle_' + action)
method()
return True
return False
def _key_released_cb(self, grabber, keycode, state):
if self._keycode_pressed == keycode:
self._keycode_pressed = 0
if self._keystate_pressed == state:
self._keystate_pressed = 0
if not self._keycode_pressed and not self._keystate_pressed and \
self._key_pressed:
gtk.gdk.keyboard_ungrab(time=0L)
if self._key_pressed == '<alt>f':
self._shell.get_frame().notify_key_release()
elif self._key_pressed == '0x93':
self._shell.get_frame().notify_key_release()
return True
return False
def _toggle_console_visibility_cb(self):
bus = dbus.SessionBus()
proxy = bus.get_object('org.laptop.sugar.Console',
'/org/laptop/sugar/Console')
console = dbus.Interface(proxy, 'org.laptop.sugar.Console')
console.toggle_visibility()
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