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namespace Caribou {
// We can't use the name "Keyboard" here since caribou-gtk-module
// might register the name first.
[DBus (name = "org.gnome.Caribou.Keyboard")]
interface _Keyboard : Object {
public abstract void set_cursor_location (int x, int y, int w, int h)
throws IOError;
public abstract void set_entry_location (int x, int y, int w, int h)
throws IOError;
public abstract void show (uint32 timestamp) throws IOError;
public abstract void hide (uint32 timestamp) throws IOError;
}
[DBus (name = "org.gnome.Caribou.Daemon")]
class Daemon : Object {
_Keyboard keyboard;
Atspi.Accessible current_acc;
unowned Gdk.Display display;
uint name_id;
public Daemon () {
display = Gdk.Display.get_default ();
name_id = Bus.own_name (BusType.SESSION,
"org.gnome.Caribou.Daemon",
BusNameOwnerFlags.ALLOW_REPLACEMENT
| BusNameOwnerFlags.REPLACE,
on_bus_acquired, null, quit);
}
~Daemon () {
Bus.unown_name (name_id);
}
void on_bus_acquired (DBusConnection conn) {
try {
conn.register_object ("/org/gnome/Caribou/Daemon", this);
} catch (IOError e) {
error ("Could not register D-Bus service: %s", e.message);
}
}
void on_get_proxy_ready (GLib.Object? obj, GLib.AsyncResult res) {
try {
keyboard = Bus.get_proxy.end (res);
} catch (Error e) {
error ("%s\n".printf (e.message));
}
try {
register_event_listeners ();
} catch (Error e) {
warning ("can't register event listeners: %s", e.message);
}
}
uint32 get_timestamp () {
if (display is Gdk.X11Display)
return Gdk.X11Display.get_user_time (display);
else
return 0;
}
void set_entry_location (Atspi.Accessible acc) throws Error {
var text = acc.get_text ();
var rect = text.get_character_extents (text.get_caret_offset (),
Atspi.CoordType.SCREEN);
var component = acc.get_component ();
var entry_rect = component.get_extents (Atspi.CoordType.SCREEN);
if (rect.x == 0 && rect.y == 0 &&
rect.width == 0 && rect.height == 0) {
rect = entry_rect;
}
keyboard.set_cursor_location (rect.x, rect.y,
rect.width, rect.height);
keyboard.set_entry_location (entry_rect.x, entry_rect.y,
entry_rect.width, entry_rect.height);
keyboard.show (get_timestamp ());
}
void on_focus (owned Atspi.Event event) throws Error {
var acc = event.source;
var source_role = acc.get_role ();
if (acc.get_state_set ().contains (Atspi.StateType.EDITABLE) ||
source_role == Atspi.Role.TERMINAL) {
switch (source_role) {
case Atspi.Role.TEXT:
case Atspi.Role.PARAGRAPH:
case Atspi.Role.PASSWORD_TEXT:
case Atspi.Role.TERMINAL:
case Atspi.Role.ENTRY:
if (event.type == "object:state-changed:focused") {
if (event.detail1 == 1) {
set_entry_location (acc);
current_acc = event.source;
debug ("enter text widget in %s",
event.source.get_application ().name);
} else if (acc == current_acc) {
keyboard.hide (get_timestamp ());
current_acc = null;
debug ("leave text widget in %s",
event.source.get_application ().name);
}
} else {
warning ("unknown focus event: %s", event.type);
}
break;
default:
break;
}
}
}
void on_focus_ignore_error (owned Atspi.Event event) {
try {
on_focus (event);
} catch (Error e) {
warning ("error in focus handler: %s", e.message);
}
}
void on_text_caret_moved (owned Atspi.Event event) throws Error {
if (current_acc == event.source) {
var text = current_acc.get_text ();
var rect = text.get_character_extents (text.get_caret_offset (),
Atspi.CoordType.SCREEN);
if (rect.x == 0 && rect.y == 0 &&
rect.width == 0 && rect.height == 0) {
var component = current_acc.get_component ();
rect = component.get_extents (Atspi.CoordType.SCREEN);
}
keyboard.set_cursor_location (rect.x, rect.y,
rect.width, rect.height);
debug ("object:text-caret-moved in %s: %d %s",
event.source.get_application ().name,
event.detail1, event.source.description);
}
}
void on_text_caret_moved_ignore_error (owned Atspi.Event event) {
try {
on_text_caret_moved (event);
} catch (Error e) {
warning ("error in text caret movement handler: %s", e.message);
}
}
void register_event_listeners () throws Error {
Atspi.EventListener.register_from_callback (
on_focus_ignore_error, "object:state-changed:focused");
Atspi.EventListener.register_from_callback (
on_text_caret_moved_ignore_error, "object:text-caret-moved");
}
void deregister_event_listeners () throws Error {
Atspi.EventListener.deregister_from_callback (
on_focus_ignore_error, "object:state-changed:focused");
Atspi.EventListener.deregister_from_callback (
on_text_caret_moved_ignore_error, "object:text-caret-moved");
}
[DBus (name = "Run")]
public void ping () {
// This method is called over D-Bus, upon activation.
}
[DBus (visible = false)]
public void run () {
Bus.get_proxy.begin<_Keyboard> (BusType.SESSION,
"org.gnome.Caribou.Keyboard",
"/org/gnome/Caribou/Keyboard",
0,
null,
on_get_proxy_ready);
// Use Atspi.Event.{main,quit}, instead of GLib.MainLoop
// to enable property caching in libatspi.
Atspi.Event.main ();
}
public void quit () {
if (keyboard != null) {
try {
keyboard.hide (get_timestamp ());
} catch (IOError e) {
warning ("can't hide keyboard: %s", e.message);
}
try {
deregister_event_listeners ();
} catch (Error e) {
warning ("can't deregister event listeners: %s", e.message);
}
keyboard = null;
}
Atspi.Event.quit ();
}
}
}
static int main (string[] args) {
Gdk.init (ref args);
Intl.setlocale (LocaleCategory.ALL, "");
Intl.bindtextdomain (Config.GETTEXT_PACKAGE, Config.LOCALEDIR);
Intl.bind_textdomain_codeset (Config.GETTEXT_PACKAGE, "UTF-8");
Intl.textdomain (Config.GETTEXT_PACKAGE);
var retval = Atspi.init ();
if (retval != 0) {
printerr ("can't initialize atspi\n");
return 1;
}
var daemon = new Caribou.Daemon ();
Unix.signal_add (Posix.SIGINT, () => {
daemon.quit ();
return false;
});
daemon.run ();
return 0;
}
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