Reimplement eekboard as a D-Bus server.
This commit is contained in:
Daiki Ueno
477
src/system-client.c
Normal file
477
src/system-client.c
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@ -0,0 +1,477 @@
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/*
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* Copyright (C) 2010-2011 Daiki Ueno <ueno@unixuser.org>
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* Copyright (C) 2010-2011 Red Hat, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <libxklavier/xklavier.h>
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#include <cspi/spi.h>
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#include <gdk/gdkx.h>
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#include <fakekey/fakekey.h>
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif /* HAVE_CONFIG_H */
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#include "eek/eek.h"
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#include "eek/eek-xkl.h"
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#include "system-client.h"
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#include "proxy.h"
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#define CSW 640
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#define CSH 480
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enum {
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PROP_0,
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PROP_CONNECTION,
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PROP_LAST
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};
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typedef struct _EekboardSystemClientClass EekboardSystemClientClass;
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struct _EekboardSystemClient {
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GObject parent;
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EekboardProxy *proxy;
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EekKeyboard *keyboard;
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Accessible *accessible;
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XklEngine *xkl_engine;
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XklConfigRegistry *xkl_config_registry;
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FakeKey *fakekey;
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gulong xkl_config_changed_handler_id;
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gulong xkl_state_changed_handler_id;
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gulong key_pressed_handler_id;
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gulong key_released_handler_id;
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AccessibleEventListener *focus_listener;
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AccessibleEventListener *keystroke_listener;
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};
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struct _EekboardSystemClientClass {
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GObjectClass parent_class;
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};
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G_DEFINE_TYPE (EekboardSystemClient, eekboard_system_client, G_TYPE_OBJECT);
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static GdkFilterReturn filter_xkl_event (GdkXEvent *xev,
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GdkEvent *event,
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gpointer user_data);
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static void on_xkl_config_changed
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(XklEngine *xklengine,
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gpointer user_data);
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static void on_xkl_state_changed
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(XklEngine *xklengine,
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XklEngineStateChange type,
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gint value,
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gboolean restore,
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gpointer user_data);
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static SPIBoolean focus_listener_cb (const AccessibleEvent *event,
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void *user_data);
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static SPIBoolean keystroke_listener_cb
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(const AccessibleKeystroke *stroke,
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void *user_data);
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static void set_keyboard (EekboardSystemClient *client);
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static void
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eekboard_system_client_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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EekboardSystemClient *client = EEKBOARD_SYSTEM_CLIENT(object);
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GDBusConnection *connection;
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GError *error;
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switch (prop_id) {
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case PROP_CONNECTION:
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connection = g_value_get_object (value);
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error = NULL;
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client->proxy = eekboard_proxy_new ("/com/redhat/eekboard/Keyboard",
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connection,
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NULL,
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&error);
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break;
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default:
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g_object_set_property (object,
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g_param_spec_get_name (pspec),
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value);
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break;
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}
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}
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static void
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eekboard_system_client_dispose (GObject *object)
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{
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EekboardSystemClient *client = EEKBOARD_SYSTEM_CLIENT(object);
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eekboard_system_client_disable_xkl (client);
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eekboard_system_client_disable_cspi (client);
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eekboard_system_client_disable_fakekey (client);
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if (client->proxy) {
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g_object_unref (client->proxy);
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client->proxy = NULL;
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}
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if (client->fakekey) {
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client->fakekey = NULL;
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}
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G_OBJECT_CLASS (eekboard_system_client_parent_class)->dispose (object);
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}
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static void
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eekboard_system_client_class_init (EekboardSystemClientClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GParamSpec *pspec;
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gobject_class->set_property = eekboard_system_client_set_property;
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gobject_class->dispose = eekboard_system_client_dispose;
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pspec = g_param_spec_object ("connection",
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"Connection",
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"Connection",
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G_TYPE_DBUS_CONNECTION,
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G_PARAM_CONSTRUCT_ONLY | G_PARAM_WRITABLE);
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g_object_class_install_property (gobject_class,
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PROP_CONNECTION,
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pspec);
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}
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static void
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eekboard_system_client_init (EekboardSystemClient *client)
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{
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client->keyboard = NULL;
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client->accessible = NULL;
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client->xkl_engine = NULL;
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client->xkl_config_registry = NULL;
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client->focus_listener = NULL;
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client->keystroke_listener = NULL;
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client->proxy = NULL;
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client->fakekey = NULL;
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client->key_pressed_handler_id = 0;
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client->key_released_handler_id = 0;
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client->xkl_config_changed_handler_id = 0;
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client->xkl_state_changed_handler_id = 0;
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}
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gboolean
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eekboard_system_client_enable_xkl (EekboardSystemClient *client)
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{
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if (!client->xkl_engine) {
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Display *display;
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display = GDK_DISPLAY_XDISPLAY (gdk_display_get_default ());
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client->xkl_engine = xkl_engine_get_instance (display);
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}
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if (!client->xkl_config_registry) {
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client->xkl_config_registry =
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xkl_config_registry_get_instance (client->xkl_engine);
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xkl_config_registry_load (client->xkl_config_registry, FALSE);
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}
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client->xkl_config_changed_handler_id =
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g_signal_connect (client->xkl_engine, "X-config-changed",
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G_CALLBACK(on_xkl_config_changed), client);
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client->xkl_state_changed_handler_id =
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g_signal_connect (client->xkl_engine, "X-state-changed",
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G_CALLBACK(on_xkl_state_changed), client);
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gdk_window_add_filter (NULL,
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(GdkFilterFunc) filter_xkl_event,
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client);
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gdk_window_add_filter (gdk_get_default_root_window (),
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(GdkFilterFunc) filter_xkl_event,
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client);
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xkl_engine_start_listen (client->xkl_engine, XKLL_TRACK_KEYBOARD_STATE);
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set_keyboard (client);
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return TRUE;
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}
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void
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eekboard_system_client_disable_xkl (EekboardSystemClient *client)
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{
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if (client->xkl_engine)
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xkl_engine_stop_listen (client->xkl_engine, XKLL_TRACK_KEYBOARD_STATE);
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if (g_signal_handler_is_connected (client->xkl_engine,
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client->xkl_config_changed_handler_id))
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g_signal_handler_disconnect (client->xkl_engine,
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client->xkl_config_changed_handler_id);
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if (g_signal_handler_is_connected (client->xkl_engine,
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client->xkl_state_changed_handler_id))
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g_signal_handler_disconnect (client->xkl_engine,
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client->xkl_state_changed_handler_id);
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}
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gboolean
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eekboard_system_client_enable_cspi (EekboardSystemClient *client)
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{
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client->focus_listener = SPI_createAccessibleEventListener
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((AccessibleEventListenerCB)focus_listener_cb,
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client);
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if (!SPI_registerGlobalEventListener (client->focus_listener,
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"object:state-changed:focused"))
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return FALSE;
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if (!SPI_registerGlobalEventListener (client->focus_listener,
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"focus:"))
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return FALSE;
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client->keystroke_listener =
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SPI_createAccessibleKeystrokeListener (keystroke_listener_cb,
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client);
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if (!SPI_registerAccessibleKeystrokeListener
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(client->keystroke_listener,
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SPI_KEYSET_ALL_KEYS,
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0,
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SPI_KEY_PRESSED |
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SPI_KEY_RELEASED,
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SPI_KEYLISTENER_NOSYNC))
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return FALSE;
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return TRUE;
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}
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void
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eekboard_system_client_disable_cspi (EekboardSystemClient *client)
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{
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if (client->focus_listener) {
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SPI_deregisterGlobalEventListenerAll (client->focus_listener);
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AccessibleEventListener_unref (client->focus_listener);
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client->focus_listener = NULL;
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}
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if (client->keystroke_listener) {
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SPI_deregisterAccessibleKeystrokeListener (client->keystroke_listener,
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0);
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AccessibleKeystrokeListener_unref (client->keystroke_listener);
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client->keystroke_listener = NULL;
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}
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}
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EekboardSystemClient *
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eekboard_system_client_new (GDBusConnection *connection)
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{
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return g_object_new (EEKBOARD_TYPE_SYSTEM_CLIENT,
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"connection", connection,
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NULL);
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}
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static SPIBoolean
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focus_listener_cb (const AccessibleEvent *event,
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void *user_data)
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{
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EekboardSystemClient *client = user_data;
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Accessible *accessible = event->source;
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AccessibleStateSet *state_set = Accessible_getStateSet (accessible);
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AccessibleRole role = Accessible_getRole (accessible);
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if (AccessibleStateSet_contains (state_set, SPI_STATE_EDITABLE) ||
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role == SPI_ROLE_TERMINAL) {
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switch (role) {
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case SPI_ROLE_TEXT:
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case SPI_ROLE_PARAGRAPH:
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case SPI_ROLE_PASSWORD_TEXT:
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case SPI_ROLE_TERMINAL:
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if (g_strcmp0 (event->type, "focus") == 0 ||
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event->detail1 == 1) {
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client->accessible = accessible;
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eekboard_proxy_show (client->proxy);
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} else if (event->detail1 == 0 &&
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accessible == client->accessible) {
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client->accessible = NULL;
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eekboard_proxy_hide (client->proxy);
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}
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case SPI_ROLE_ENTRY:
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if (g_strcmp0 (event->type, "focus") == 0 ||
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event->detail1 == 1) {
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client->accessible = accessible;
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eekboard_proxy_show (client->proxy);
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} else if (event->detail1 == 0 &&
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accessible == client->accessible) {
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client->accessible = NULL;
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eekboard_proxy_hide (client->proxy);
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}
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default:
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;
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}
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}
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return FALSE;
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}
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static SPIBoolean
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keystroke_listener_cb (const AccessibleKeystroke *stroke,
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void *user_data)
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{
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EekboardSystemClient *client = user_data;
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EekKey *key;
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EekSymbol *symbol;
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return FALSE;
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key = eek_keyboard_find_key_by_keycode (client->keyboard,
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stroke->keycode);
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if (!key)
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return FALSE;
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symbol = eek_key_get_symbol_with_fallback (key, 0, 0);
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if (!symbol)
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return FALSE;
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/* XXX: Ignore modifier keys since there is no way to receive
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SPI_KEY_RELEASED event for them. */
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if (eek_symbol_is_modifier (symbol))
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return FALSE;
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if (stroke->type == SPI_KEY_PRESSED)
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g_signal_emit_by_name (key, "pressed");
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else
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g_signal_emit_by_name (key, "released");
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return TRUE;
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}
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static GdkFilterReturn
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filter_xkl_event (GdkXEvent *xev,
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GdkEvent *event,
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gpointer user_data)
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{
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EekboardSystemClient *client = user_data;
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XEvent *xevent = (XEvent *)xev;
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xkl_engine_filter_events (client->xkl_engine, xevent);
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return GDK_FILTER_CONTINUE;
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}
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static void
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on_xkl_config_changed (XklEngine *xklengine,
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gpointer user_data)
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{
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EekboardSystemClient *client = user_data;
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set_keyboard (client);
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}
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static void
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set_keyboard (EekboardSystemClient *client)
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{
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EekLayout *layout;
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gchar *keyboard_name;
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static gint keyboard_serial = 0;
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if (client->keyboard)
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g_object_unref (client->keyboard);
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layout = eek_xkl_layout_new ();
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client->keyboard = eek_keyboard_new (layout, CSW, CSH);
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keyboard_name = g_strdup_printf ("keyboard%d", keyboard_serial++);
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eek_element_set_name (EEK_ELEMENT(client->keyboard), keyboard_name);
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eekboard_proxy_set_keyboard (client->proxy, client->keyboard);
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}
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static void
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on_xkl_state_changed (XklEngine *xklengine,
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XklEngineStateChange type,
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gint value,
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gboolean restore,
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gpointer user_data)
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{
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EekboardSystemClient *client = user_data;
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if (type == GROUP_CHANGED && client->keyboard) {
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gint group = eek_keyboard_get_group (client->keyboard);
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if (group != value) {
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eek_keyboard_set_group (client->keyboard, value);
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eekboard_proxy_set_group (client->proxy, value);
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}
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}
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}
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static void
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on_key_pressed (EekboardProxy *proxy,
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guint keycode,
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gpointer user_data)
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{
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EekboardSystemClient *client = user_data;
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EekKey *key;
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EekSymbol *symbol;
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g_assert (client->fakekey);
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key = eek_keyboard_find_key_by_keycode (client->keyboard, keycode);
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symbol = eek_key_get_symbol_with_fallback (key, 0, 0);
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if (EEK_IS_KEYSYM(symbol) && !eek_symbol_is_modifier (symbol))
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fakekey_press_keysym (client->fakekey,
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eek_keysym_get_xkeysym (EEK_KEYSYM(symbol)),
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eek_keyboard_get_modifiers (client->keyboard));
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}
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static void
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on_key_released (EekboardProxy *proxy,
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guint keycode,
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gpointer user_data)
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{
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EekboardSystemClient *client = user_data;
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g_assert (client->fakekey);
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fakekey_release (client->fakekey);
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}
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gboolean
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eekboard_system_client_enable_fakekey (EekboardSystemClient *client)
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{
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if (!client->fakekey) {
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Display *display;
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display = GDK_DISPLAY_XDISPLAY (gdk_display_get_default ());
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client->fakekey = fakekey_init (display);
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}
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g_assert (client->fakekey);
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client->key_pressed_handler_id =
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g_signal_connect (client->proxy, "key-pressed",
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G_CALLBACK(on_key_pressed), client);
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client->key_released_handler_id =
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g_signal_connect (client->proxy, "key-pressed",
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G_CALLBACK(on_key_released), client);
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return TRUE;
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}
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void
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eekboard_system_client_disable_fakekey (EekboardSystemClient *client)
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{
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if (client->fakekey)
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fakekey_release (client->fakekey);
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if (g_signal_handler_is_connected (client->proxy,
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client->key_pressed_handler_id))
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g_signal_handler_disconnect (client->proxy,
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client->key_pressed_handler_id);
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if (g_signal_handler_is_connected (client->proxy,
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client->key_released_handler_id))
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g_signal_handler_disconnect (client->proxy,
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client->key_released_handler_id);
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}
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