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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 subprocess
import dbus
import gtk
from hardware import hardwaremanager
from model.shellmodel import ShellModel
from sugar._sugarext import KeyGrabber
_BRIGHTNESS_STEP = 2
_VOLUME_STEP = 10
_BRIGHTNESS_MAX = 15
_VOLUME_MAX = 100
_actions_table = {
'F1' : 'zoom_mesh',
'F2' : 'zoom_friends',
'F3' : 'zoom_home',
'F4' : 'zoom_activity',
'F9' : 'brightness_down',
'F10' : 'brightness_up',
'<ctrl>F9' : 'brightness_min',
'<ctrl>F10' : 'brightness_max',
'F11' : 'volume_down',
'F12' : 'volume_up',
'<ctrl>F11' : 'volume_min',
'<ctrl>F12' : 'volume_max',
'<alt>1' : 'screenshot',
'<alt>f' : 'frame',
'0x93' : 'frame',
'<alt>o' : 'overlay',
'0xE0' : 'overlay',
'0xEB' : 'rotate',
'<alt>r' : 'rotate',
'<alt>q' : 'quit_emulator',
'<alt>Tab' : 'next_window',
'<alt>n' : 'next_window',
'<ctrl><alt>Tab' : 'previous_window',
'<alt>p' : 'previous_window',
'<ctrl>Escape' : 'close_window',
'<ctrl>q' : 'close_window',
'0xDC' : 'open_search',
'<ctrl>o' : 'open_search',
'<alt>s' : 'say_text'
}
J_DBUS_SERVICE = 'org.laptop.Journal'
J_DBUS_PATH = '/org/laptop/Journal'
J_DBUS_INTERFACE = 'org.laptop.Journal'
SPEECH_DBUS_SERVICE = 'org.laptop.Speech'
SPEECH_DBUS_PATH = '/org/laptop/Speech'
SPEECH_DBUS_INTERFACE = 'org.laptop.Speech'
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._speech_proxy = None
self._key_grabber = KeyGrabber()
self._key_grabber.connect('key-pressed',
self._key_pressed_cb)
for key in _actions_table.keys():
self._key_grabber.grab(key)
def _change_volume(self, step=None, value=None):
hw_manager = hardwaremanager.get_manager()
if step is not None:
volume = hw_manager.get_volume() + step
elif value is not None:
volume = value
volume = min(max(0, volume), _VOLUME_MAX)
hw_manager.set_volume(volume)
hw_manager.set_mute(volume == 0)
def _change_brightness(self, step=None, value=None):
hw_manager = hardwaremanager.get_manager()
if step is not None:
level = hw_manager.get_display_brightness() + step
elif value is not None:
level = value
level = min(max(0, level), _BRIGHTNESS_MAX)
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 _get_speech_proxy(self):
if self._speech_proxy is None:
bus = dbus.SessionBus()
speech_obj = bus.get_object(SPEECH_DBUS_SERVICE, SPEECH_DBUS_PATH)
self._speech_proxy = dbus.Interface(speech_obj, SPEECH_DBUS_INTERFACE)
return self._speech_proxy
def _on_speech_err(self, ex):
logging.error("An error occurred with the ESpeak service: %r" % (ex, ))
def _primary_selection_cb(self, clipboard, text, user_data):
logging.debug('KeyHandler._primary_selection_cb: %r' % text)
if text:
self._get_speech_proxy().SayText(text, reply_handler=lambda: None, \
error_handler=self._on_speech_err)
def handle_say_text(self):
clipboard = gtk.clipboard_get(selection="PRIMARY")
clipboard.request_text(self._primary_selection_cb)
def handle_previous_window(self):
self._shell.activate_previous_activity()
def handle_next_window(self):
self._shell.activate_next_activity()
def handle_close_window(self):
self._shell.close_current_activity()
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_max(self):
self._change_brightness(value=_BRIGHTNESS_MAX)
def handle_brightness_min(self):
self._change_brightness(value=0)
def handle_volume_max(self):
self._change_volume(value=_VOLUME_MAX)
def handle_volume_min(self):
self._change_volume(value=0)
def handle_brightness_up(self):
self._change_brightness(step=_BRIGHTNESS_STEP)
def handle_brightness_down(self):
self._change_brightness(step=-_BRIGHTNESS_STEP)
def handle_volume_up(self):
self._change_volume(step=_VOLUME_STEP)
def handle_volume_down(self):
self._change_volume(step=-_VOLUME_STEP)
def handle_screenshot(self):
self._shell.take_screenshot()
def handle_frame(self):
self._shell.get_frame().notify_key_press()
def handle_overlay(self):
self._shell.toggle_chat_visibility()
def handle_rotate(self):
states = [ 'normal', 'left', 'inverted', 'right']
self._screen_rotation += 1
if self._screen_rotation == len(states):
self._screen_rotation = 0
subprocess.Popen(['xrandr', '-o', states[self._screen_rotation]])
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 focus_journal_search(self):
bus = dbus.SessionBus()
obj = bus.get_object(J_DBUS_SERVICE, J_DBUS_PATH)
journal = dbus.Interface(obj, J_DBUS_INTERFACE)
journal.FocusSearch({})
def handle_open_search(self):
self.focus_journal_search()
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
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