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import pyatspi
from gi.repository import GLib
from gi.repository import Gio
from gi.repository import GdkX11
from string import Template
from caribou.i18n import _
from caribou import APP_NAME
debug = False
class CaribouDaemon:
def __init__(self):
if not self._get_a11y_enabled():
self._show_no_a11y_dialogs()
try:
self.keyboard_proxy = Gio.DBusProxy.new_for_bus_sync(
Gio.BusType.SESSION,
Gio.DBusProxyFlags.NONE,
None,
"org.gnome.Caribou.Keyboard",
"/org/gnome/Caribou/Keyboard",
"org.gnome.Caribou.Keyboard",
None)
except GLib.GError, e:
self._show_error_dialog(e.message)
self._current_acc = None
self._x11_display = GdkX11.X11Display.get_default()
self._register_event_listeners()
def _show_error_dialog(self, message):
from gi.repository import Gtk
msgdialog = Gtk.MessageDialog(None,
Gtk.DialogFlags.MODAL,
Gtk.MessageType.ERROR,
Gtk.ButtonsType.CLOSE,
_("Error starting %s") % APP_NAME)
msgdialog.format_secondary_text(message)
msgdialog.run()
quit()
def _show_no_a11y_dialogs(self):
from gi.repository import Gtk
msgdialog = Gtk.MessageDialog(None,
Gtk.DialogFlags.MODAL,
Gtk.MessageType.QUESTION,
Gtk.ButtonsType.YES_NO,
_("In order to use %s, accessibility needs "
"to be enabled. Do you want to enable "
"it now?") % APP_NAME)
resp = msgdialog.run()
if resp == Gtk.ResponseType.NO:
msgdialog.destroy()
quit()
if resp == Gtk.ResponseType.YES:
settings = Gio.Settings('org.gnome.desktop.interface')
atspi = settings.set_boolean("toolkit-accessibility", True)
msgdialog2 = Gtk.MessageDialog(msgdialog,
Gtk.DialogFlags.MODAL,
Gtk.MessageType.INFO,
Gtk.ButtonsType.OK,
_("Accessibility has been enabled. "
"Log out and back in again to use "
"%s." % APP_NAME))
msgdialog2.run()
msgdialog2.destroy()
msgdialog.destroy()
quit()
def _register_event_listeners(self):
pyatspi.Registry.registerEventListener(
self.on_focus, "object:state-changed:focused")
pyatspi.Registry.registerEventListener(self.on_focus, "focus")
pyatspi.Registry.registerEventListener(
self.on_text_caret_moved, "object:text-caret-moved")
def _deregister_event_listeners(self):
pyatspi.Registry.deregisterEventListener(
self.on_focus, "object:state-changed:focused")
pyatspi.Registry.deregisterEventListener(self.on_focus, "focus")
pyatspi.Registry.deregisterEventListener(
self.on_text_caret_moved, "object:text-caret-moved")
def _get_a11y_enabled(self):
try:
try:
settings = Gio.Settings('org.gnome.desktop.interface')
atspi = settings.get_boolean("toolkit-accessibility")
return atspi
except:
raise
from gi.repository import GConf
gconfc = GConf.Client.get_default()
atspi1 = gconfc.get_bool(
"/desktop/gnome/interface/accessibility")
atspi2 = gconfc.get_bool(
"/desktop/gnome/interface/accessibility2")
return atspi1 or atspi2
except:
raise
return False
def on_text_caret_moved(self, event):
if self._current_acc == event.source:
text = self._current_acc.queryText()
x, y, w, h = text.getCharacterExtents(text.caretOffset,
pyatspi.DESKTOP_COORDS)
if (x, y, w, h) == (0, 0, 0, 0):
component = self._current_acc.queryComponent()
bb = component.getExtents(pyatspi.DESKTOP_COORDS)
x, y, w, h = bb.x, bb.y, bb.width, bb.height
self.keyboard_proxy.SetCursorLocation('(iiii)', x, y, w, h)
if debug == True:
print "object:text-caret-moved in", event.host_application.name,
print event.detail1, event.source.description
def _set_entry_location(self, acc):
text = acc.queryText()
bx, by, bw, bh = text.getCharacterExtents(text.caretOffset,
pyatspi.DESKTOP_COORDS)
component = acc.queryComponent()
entry_bb = component.getExtents(pyatspi.DESKTOP_COORDS)
if (bx, by, bw, bh) == (0, 0, 0, 0):
bx, by, bw, bh = entry_bb.x, entry_bb.y, entry_bb.width, entry_bb.height
self.keyboard_proxy.SetCursorLocation('(iiii)', bx, by, bw, bh)
self.keyboard_proxy.SetEntryLocation('(iiii)', entry_bb.x, entry_bb.y,
entry_bb.width, entry_bb.height)
self.keyboard_proxy.Show('(u)', self._x11_display.get_user_time())
def on_focus(self, event):
acc = event.source
source_role = acc.getRole()
if acc.getState().contains(pyatspi.STATE_EDITABLE) or \
source_role == pyatspi.ROLE_TERMINAL:
if source_role in (pyatspi.ROLE_TEXT,
pyatspi.ROLE_PARAGRAPH,
pyatspi.ROLE_PASSWORD_TEXT,
pyatspi.ROLE_TERMINAL,
pyatspi.ROLE_ENTRY):
if event.type.startswith("focus") or event.detail1 == 1:
self._set_entry_location(acc)
self._current_acc = event.source
if debug == True:
print "enter text widget in", event.host_application.name
elif event.detail1 == 0 and acc == self._current_acc:
self.keyboard_proxy.Hide('(u)',
self._x11_display.get_user_time())
self._current_acc = None
if debug == True:
print "leave text widget in", event.host_application.name
else:
if debug == True:
print _("WARNING - Caribou: unhandled editable widget:"), \
event.source
def clean_exit(self):
self.keyboard_proxy.Hide('(u)', self._x11_display.get_user_time())
self._deregister_event_listeners()
def run(self):
try:
pyatspi.Registry.start()
except KeyboardInterrupt:
self.clean_exit()
pyatspi.Registry.stop()
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