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Diffstat (limited to 'src/jarabe/view/keyhandler.py')
| -rw-r--r-- | src/jarabe/view/keyhandler.py | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/src/jarabe/view/keyhandler.py b/src/jarabe/view/keyhandler.py new file mode 100644 index 0000000..530da75 --- /dev/null +++ b/src/jarabe/view/keyhandler.py @@ -0,0 +1,216 @@ +# Copyright (C) 2006-2007, Red Hat, Inc. +# Copyright (C) 2009 Simon Schampijer +# +# 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 logging + +import dbus +import gtk + +from sugar._sugarext import KeyGrabber + +from jarabe.model import sound +from jarabe.model import shell +from jarabe.model import session +from jarabe.view.tabbinghandler import TabbingHandler +from jarabe.model.shell import ShellModel +from jarabe import config +from jarabe.journal import journalactivity + + +_VOLUME_STEP = sound.VOLUME_STEP +_VOLUME_MAX = 100 +_TABBING_MODIFIER = gtk.gdk.MOD1_MASK + + +_actions_table = { + 'F1': 'zoom_mesh', + 'F2': 'zoom_group', + 'F3': 'zoom_home', + 'F4': 'zoom_activity', + 'F5': 'open_search', + 'F6': 'frame', + 'XF86AudioMute': 'volume_mute', + 'F11': 'volume_down', + 'XF86AudioLowerVolume': 'volume_down', + 'F12': 'volume_up', + 'XF86AudioRaiseVolume': 'volume_up', + '<alt>F11': 'volume_min', + '<alt>F12': 'volume_max', + 'XF86MenuKB': 'frame', + '<alt>Tab': 'next_window', + '<alt><shift>Tab': 'previous_window', + '<alt>Escape': 'close_window', + 'XF86WebCam': 'open_search', +# the following are intended for emulator users + '<alt><shift>f': 'frame', + '<alt><shift>q': 'quit_emulator', + 'XF86Search': 'open_search', + '<alt><shift>o': 'open_search' +} + + +_instance = None + + +class KeyHandler(object): + def __init__(self, frame): + self._frame = frame + 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) + + self._tabbing_handler = TabbingHandler(self._frame, _TABBING_MODIFIER) + + for f in os.listdir(os.path.join(config.ext_path, 'globalkey')): + if f.endswith('.py') and not f.startswith('__'): + module_name = f[:-3] + try: + logging.debug('Loading module %r', module_name) + module = __import__('globalkey.' + module_name, globals(), + locals(), [module_name]) + for key in module.BOUND_KEYS: + if key in _actions_table: + raise ValueError('Key %r is already bound' % key) + _actions_table[key] = module + except Exception: + logging.exception('Exception while loading extension:') + + self._key_grabber.grab_keys(_actions_table.keys()) + + def _change_volume(self, step=None, value=None): + if step is not None: + volume = sound.get_volume() + step + elif value is not None: + volume = value + + volume = min(max(0, volume), _VOLUME_MAX) + + sound.set_volume(volume) + sound.set_muted(volume == 0) + + def handle_previous_window(self, event_time): + self._tabbing_handler.previous_activity(event_time) + + def handle_next_window(self, event_time): + self._tabbing_handler.next_activity(event_time) + + def handle_close_window(self, event_time): + active_activity = shell.get_model().get_active_activity() + if active_activity.is_journal(): + return + + active_activity.get_window().close() + + def handle_zoom_mesh(self, event_time): + shell.get_model().set_zoom_level(ShellModel.ZOOM_MESH, event_time) + + def handle_zoom_group(self, event_time): + shell.get_model().set_zoom_level(ShellModel.ZOOM_GROUP, event_time) + + def handle_zoom_home(self, event_time): + shell.get_model().set_zoom_level(ShellModel.ZOOM_HOME, event_time) + + def handle_zoom_activity(self, event_time): + shell.get_model().set_zoom_level(ShellModel.ZOOM_ACTIVITY, event_time) + + def handle_volume_max(self, event_time): + self._change_volume(value=_VOLUME_MAX) + + def handle_volume_min(self, event_time): + self._change_volume(value=0) + + def handle_volume_mute(self, event_time): + if sound.get_muted() is True: + sound.set_muted(False) + else: + sound.set_muted(True) + + def handle_volume_up(self, event_time): + self._change_volume(step=_VOLUME_STEP) + + def handle_volume_down(self, event_time): + self._change_volume(step=-_VOLUME_STEP) + + def handle_frame(self, event_time): + self._frame.notify_key_press() + + def handle_quit_emulator(self, event_time): + session.get_session_manager().shutdown() + + def handle_open_search(self, event_time): + journalactivity.get_journal().focus_search() + + def _key_pressed_cb(self, grabber, keycode, state, event_time): + key = grabber.get_key(keycode, state) + logging.debug('_key_pressed_cb: %i %i %s', keycode, state, key) + if key is not None: + self._key_pressed = key + self._keycode_pressed = keycode + self._keystate_pressed = state + + action = _actions_table[key] + if self._tabbing_handler.is_tabbing(): + # Only accept window tabbing events, everything else + # cancels the tabbing operation. + if not action in ['next_window', 'previous_window']: + self._tabbing_handler.stop(event_time) + return True + + if hasattr(action, 'handle_key_press'): + action.handle_key_press(key) + elif isinstance(action, basestring): + method = getattr(self, 'handle_' + action) + method(event_time) + else: + raise TypeError('Invalid action %r' % action) + + return True + else: + # If this is not a registered key, then cancel tabbing. + if self._tabbing_handler.is_tabbing(): + if not grabber.is_modifier(keycode): + self._tabbing_handler.stop(event_time) + return True + + return False + + def _key_released_cb(self, grabber, keycode, state, event_time): + logging.debug('_key_released_cb: %i %i', keycode, state) + if self._tabbing_handler.is_tabbing(): + # We stop tabbing and switch to the new window as soon as the + # modifier key is raised again. + if grabber.is_modifier(keycode, mask=_TABBING_MODIFIER): + self._tabbing_handler.stop(event_time) + + return True + return False + + +def setup(frame): + global _instance + + if _instance: + del _instance + + _instance = KeyHandler(frame) |