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ibusimcontext.c
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ibusimcontext.c
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/* -*- mode: C; c-basic-offset: 4; indent-tabs-mode: nil; -*- */
/* vim:set et sts=4: */
/* ibus - The Input Bus
* Copyright (C) 2008-2013 Peng Huang <shawn.p.huang@gmail.com>
* Copyright (C) 2015-2024 Takao Fujiwara <takao.fujiwara1@gmail.com>
* Copyright (C) 2008-2024 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
* USA
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <string.h>
#include <gtk/gtk.h>
#include <gdk/gdk.h>
#include <gdk/gdkkeysyms.h>
#include <ibus.h>
#include "ibusimcontext.h"
#ifdef GDK_WINDOWING_WAYLAND
#if GTK_CHECK_VERSION (3, 98, 4)
#include <gdk/wayland/gdkwayland.h>
#else
#include <gdk/gdkwayland.h>
#endif
#endif
#ifdef GDK_WINDOWING_X11
#if GTK_CHECK_VERSION (3, 98, 4)
#include <gdk/x11/gdkx.h>
#include <X11/Xlib.h>
#endif
#endif
#if !GTK_CHECK_VERSION (2, 91, 0)
# define DEPRECATED_GDK_KEYSYMS 1
#endif
#ifdef DEBUG
# define IDEBUG g_debug
#else
# define IDEBUG(a...)
#endif
#define MAX_QUEUED_EVENTS 20
struct _IBusIMContext {
GtkIMContext parent;
/* instance members */
GtkIMContext *slave;
#if GTK_CHECK_VERSION (3, 98, 4)
GtkWidget *client_window;
#else
GdkWindow *client_window;
#endif
IBusInputContext *ibuscontext;
/* preedit status */
gchar *preedit_string;
PangoAttrList *preedit_attrs;
gint preedit_cursor_pos;
gboolean preedit_visible;
guint preedit_mode;
GdkRectangle cursor_area;
gboolean has_focus;
guint32 time;
gint caps;
/* cancellable */
GCancellable *cancellable;
GQueue *events_queue;
#if GTK_CHECK_VERSION (3, 98, 4)
GdkSurface *surface;
GdkDevice *device;
double x;
double y;
#else
gboolean use_button_press_event;
#endif
};
struct _IBusIMContextClass {
GtkIMContextClass parent;
/* class members */
};
static guint _signal_commit_id = 0;
static guint _signal_preedit_changed_id = 0;
static guint _signal_preedit_start_id = 0;
static guint _signal_preedit_end_id = 0;
static guint _signal_delete_surrounding_id = 0;
static guint _signal_retrieve_surrounding_id = 0;
#if GTK_CHECK_VERSION (3, 98, 4)
static char _use_sync_mode = 1;
#else
static const gchar *_no_snooper_apps = NO_SNOOPER_APPS;
static gboolean _use_key_snooper = ENABLE_SNOOPER;
static guint _key_snooper_id = 0;
static char _use_sync_mode = 0;
#endif
static const gchar *_discard_password_apps = "";
static gboolean _use_discard_password = FALSE;
static GtkIMContext *_focus_im_context = NULL;
static IBusInputContext *_fake_context = NULL;
#if !GTK_CHECK_VERSION (3, 98, 4)
static GdkWindow *_input_window = NULL;
static GtkWidget *_input_widget = NULL;
#endif
/* functions prototype */
static void ibus_im_context_class_init (IBusIMContextClass *class);
static void ibus_im_context_class_fini (IBusIMContextClass *class);
static void ibus_im_context_init (GObject *obj);
static void ibus_im_context_notify (GObject *obj,
GParamSpec *pspec);
static void ibus_im_context_finalize (GObject *obj);
static void ibus_im_context_reset (GtkIMContext *context);
static gboolean ibus_im_context_filter_keypress
(GtkIMContext *context,
#if GTK_CHECK_VERSION (3, 98, 4)
GdkEvent *key);
#else
GdkEventKey *key);
#endif
static void ibus_im_context_focus_in (GtkIMContext *context);
static void ibus_im_context_focus_out (GtkIMContext *context);
static void ibus_im_context_get_preedit_string
(GtkIMContext *context,
gchar **str,
PangoAttrList **attrs,
gint *cursor_pos);
#if GTK_CHECK_VERSION (3, 98, 4)
static void ibus_im_context_set_client_widget
(GtkIMContext *context,
GtkWidget *client);
#else
static void ibus_im_context_set_client_window
(GtkIMContext *context,
GdkWindow *client);
#endif
static void ibus_im_context_set_cursor_location
(GtkIMContext *context,
GdkRectangle *area);
static void ibus_im_context_set_use_preedit
(GtkIMContext *context,
gboolean use_preedit);
#if !GTK_CHECK_VERSION (4, 1, 2)
static void ibus_im_context_set_surrounding
(GtkIMContext *slave,
const gchar *text,
int len,
int cursor_index);
#endif
static void ibus_im_context_set_surrounding_with_selection
(GtkIMContext *slave,
const gchar *text,
int len,
int cursor_index,
int anchor_index);
/* static methods*/
static void _ibus_context_update_preedit_text_cb
(IBusInputContext *ibuscontext,
IBusText *text,
gint cursor_pos,
gboolean visible,
guint mode,
IBusIMContext *ibusimcontext);
static void _create_input_context (IBusIMContext *context);
static gboolean _set_cursor_location_internal
(IBusIMContext *context);
static void _bus_connected_cb (IBusBus *bus,
IBusIMContext *context);
/* callback functions for slave context */
static void _slave_commit_cb (GtkIMContext *slave,
gchar *string,
IBusIMContext *context);
static void _slave_preedit_changed_cb (GtkIMContext *slave,
IBusIMContext *context);
static void _slave_preedit_start_cb (GtkIMContext *slave,
IBusIMContext *context);
static void _slave_preedit_end_cb (GtkIMContext *slave,
IBusIMContext *context);
static gboolean _slave_retrieve_surrounding_cb
(GtkIMContext *slave,
IBusIMContext *context);
static gboolean _slave_delete_surrounding_cb
(GtkIMContext *slave,
gint offset_from_cursor,
guint nchars,
IBusIMContext *context);
static gboolean _request_surrounding_text (IBusIMContext *context);
static void _create_fake_input_context (void);
static gboolean _set_content_type (IBusIMContext *context);
static GType _ibus_type_im_context = 0;
static GtkIMContextClass *parent_class = NULL;
static IBusBus *_bus = NULL;
static guint _daemon_name_watch_id = 0;
static gboolean _daemon_is_running = FALSE;
void
ibus_im_context_register_type (GTypeModule *type_module)
{
IDEBUG ("%s", __FUNCTION__);
static const GTypeInfo ibus_im_context_info = {
sizeof (IBusIMContextClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) ibus_im_context_class_init,
(GClassFinalizeFunc) ibus_im_context_class_fini,
NULL, /* class data */
sizeof (IBusIMContext),
0,
(GInstanceInitFunc) ibus_im_context_init,
};
if (!_ibus_type_im_context) {
if (type_module) {
_ibus_type_im_context =
g_type_module_register_type (type_module,
GTK_TYPE_IM_CONTEXT,
"IBusIMContext",
&ibus_im_context_info,
(GTypeFlags)0);
}
else {
_ibus_type_im_context =
g_type_register_static (GTK_TYPE_IM_CONTEXT,
"IBusIMContext",
&ibus_im_context_info,
(GTypeFlags)0);
}
}
}
GType
ibus_im_context_get_type (void)
{
IDEBUG ("%s", __FUNCTION__);
if (_ibus_type_im_context == 0) {
ibus_im_context_register_type (NULL);
}
g_assert (_ibus_type_im_context != 0);
return _ibus_type_im_context;
}
IBusIMContext *
ibus_im_context_new (void)
{
IDEBUG ("%s", __FUNCTION__);
GObject *obj = g_object_new (IBUS_TYPE_IM_CONTEXT, NULL);
return IBUS_IM_CONTEXT (obj);
}
#if !GTK_CHECK_VERSION (3, 98, 4)
static gboolean
_focus_in_cb (GtkWidget *widget,
GdkEventFocus *event,
gpointer user_data)
{
if (_focus_im_context == NULL && _fake_context != NULL) {
ibus_input_context_focus_in (_fake_context);
}
return FALSE;
}
static gboolean
_focus_out_cb (GtkWidget *widget,
GdkEventFocus *event,
gpointer user_data)
{
if (_focus_im_context == NULL && _fake_context != NULL) {
ibus_input_context_focus_out (_fake_context);
}
return FALSE;
}
#endif /* end of GTK_CHECK_VERSION (3, 98, 4) */
static gboolean
ibus_im_context_commit_event (IBusIMContext *ibusimcontext,
#if GTK_CHECK_VERSION (3, 98, 4)
GdkEvent *event)
#else
GdkEventKey *event)
#endif
{
guint keyval = 0;
GdkModifierType state = 0;
int i;
GdkModifierType no_text_input_mask;
gunichar ch;
#if GTK_CHECK_VERSION (3, 98, 4)
if (gdk_event_get_event_type (event) == GDK_KEY_RELEASE)
return FALSE;
keyval = gdk_key_event_get_keyval (event);
state = gdk_event_get_modifier_state (event);
#else
if (event->type == GDK_KEY_RELEASE)
return FALSE;
keyval = event->keyval;
state = event->state;
#endif
/* Ignore modifier key presses */
for (i = 0; i < G_N_ELEMENTS (IBUS_COMPOSE_IGNORE_KEYLIST); i++)
if (keyval == IBUS_COMPOSE_IGNORE_KEYLIST[i])
return FALSE;
#if GTK_CHECK_VERSION (3, 98, 4)
no_text_input_mask = GDK_MODIFIER_MASK;
#elif GTK_CHECK_VERSION (3, 4, 0)
no_text_input_mask = gdk_keymap_get_modifier_mask (
gdk_keymap_get_for_display (gdk_display_get_default ()),
GDK_MODIFIER_INTENT_NO_TEXT_INPUT);
#else
# ifndef GDK_WINDOWING_QUARTZ
# define _IBUS_NO_TEXT_INPUT_MOD_MASK (GDK_MOD1_MASK | GDK_CONTROL_MASK)
# else
# define _IBUS_NO_TEXT_INPUT_MOD_MASK (GDK_MOD2_MASK | GDK_CONTROL_MASK)
# endif
no_text_input_mask = _IBUS_NO_TEXT_INPUT_MOD_MASK;
# undef _IBUS_NO_TEXT_INPUT_MOD_MASK
#endif
if (state & no_text_input_mask ||
keyval == GDK_KEY_Return ||
keyval == GDK_KEY_ISO_Enter ||
keyval == GDK_KEY_KP_Enter) {
return FALSE;
}
/* #2588 If IBus tries to commit a character, it should be forwarded to
* the application at once with IBUS_IGNORED_MASK before the actual
* commit because any characters can be control characters even if
* they are not ASCII characters, e.g. game cursor keys with a
* language keyboard layout likes VIM cursor mode "hjkl" keys.
*/
ch = ibus_keyval_to_unicode (keyval);
if (ch != 0 && !g_unichar_iscntrl (ch)) {
IBusText *text = ibus_text_new_from_unichar (ch);
g_signal_emit (ibusimcontext, _signal_commit_id, 0, text->text);
g_object_unref (text);
_request_surrounding_text (ibusimcontext);
#if !GTK_CHECK_VERSION (3, 98, 4)
/* Avoid a loop with _ibus_context_forward_key_event_cb() */
event->state |= IBUS_HANDLED_MASK;
#endif
return TRUE;
}
return FALSE;
}
typedef struct {
GdkEvent *event;
IBusIMContext *ibusimcontext;
} ProcessKeyEventData;
typedef struct {
int count;
guint count_cb_id;
gboolean retval;
} ProcessKeyEventReplyData;
static void
_process_key_event_done (GObject *object,
GAsyncResult *res,
gpointer user_data)
{
IBusInputContext *context = (IBusInputContext *)object;
ProcessKeyEventData *data = (ProcessKeyEventData *)user_data;
GdkEvent *event = data->event;
#if GTK_CHECK_VERSION (3, 98, 4)
IBusIMContext *ibusimcontext = data->ibusimcontext;
#endif
GError *error = NULL;
gboolean retval;
g_slice_free (ProcessKeyEventData, data);
retval = ibus_input_context_process_key_event_async_finish (context,
res,
&error);
if (error != NULL) {
g_warning ("Process Key Event failed: %s.", error->message);
g_error_free (error);
}
if (retval == FALSE) {
#if GTK_CHECK_VERSION (3, 98, 4)
g_return_if_fail (GTK_IS_IM_CONTEXT (ibusimcontext));
gtk_im_context_filter_key (
GTK_IM_CONTEXT (ibusimcontext),
gdk_event_get_event_type (event) == GDK_KEY_PRESS,
gdk_event_get_surface (event),
gdk_event_get_device (event),
gdk_event_get_time (event),
gdk_key_event_get_keycode (event),
gdk_event_get_modifier_state (event) | IBUS_IGNORED_MASK,
0);
#else
((GdkEventKey *)event)->state |= IBUS_IGNORED_MASK;
gdk_event_put (event);
#endif
}
#if GTK_CHECK_VERSION (3, 98, 4)
gdk_event_unref (event);
#else
gdk_event_free (event);
#endif
}
static void
_process_key_event_reply_done (GObject *object,
GAsyncResult *res,
gpointer user_data)
{
IBusInputContext *context = (IBusInputContext *)object;
ProcessKeyEventReplyData *data = (ProcessKeyEventReplyData *)user_data;
GError *error = NULL;
gboolean retval = ibus_input_context_process_key_event_async_finish (
context,
res,
&error);
if (error != NULL) {
g_warning ("Process Key Event failed: %s.", error->message);
g_error_free (error);
}
g_return_if_fail (data);
data->retval = retval;
data->count = 0;
g_source_remove (data->count_cb_id);
}
static gboolean
_process_key_event_count_cb (gpointer user_data)
{
ProcessKeyEventReplyData *data = (ProcessKeyEventReplyData *)user_data;
g_return_val_if_fail (data, G_SOURCE_REMOVE);
if (!data->count)
return G_SOURCE_REMOVE;
/* Wait for about 10 secs. */
if (data->count++ == 10000) {
data->count = 0;
return G_SOURCE_REMOVE;
}
return G_SOURCE_CONTINUE;
}
static gboolean
_process_key_event_sync (IBusInputContext *context,
guint keyval,
guint keycode,
guint state)
{
gboolean retval;
g_assert (IBUS_IS_INPUT_CONTEXT (context));
retval = ibus_input_context_process_key_event (context,
keyval,
keycode - 8,
state);
ibus_input_context_post_process_key_event (context);
return retval;
}
static gboolean
_process_key_event_async (IBusInputContext *context,
guint keyval,
guint keycode,
guint state,
GdkEvent *event,
IBusIMContext *ibusimcontext)
{
ProcessKeyEventData *data = g_slice_new0 (ProcessKeyEventData);
g_assert (event);
if (!data) {
g_warning ("Cannot allocate async data");
return _process_key_event_sync (context, keyval, keycode, state);
}
#if GTK_CHECK_VERSION (3, 98, 4)
data->event = gdk_event_ref (event);
#else
data->event = gdk_event_copy (event);
#endif
data->ibusimcontext = ibusimcontext;
ibus_input_context_process_key_event_async (context,
keyval,
keycode - 8,
state,
-1,
NULL,
_process_key_event_done,
data);
return TRUE;
}
static gboolean
_process_key_event_hybrid_async (IBusInputContext *context,
guint keyval,
guint keycode,
guint state)
{
GSource *source = g_timeout_source_new (1);
ProcessKeyEventReplyData *data = NULL;
gboolean retval = FALSE;
if (source)
data = g_slice_new0 (ProcessKeyEventReplyData);
if (!data) {
g_warning ("Cannot wait for the reply of the process key event.");
retval = _process_key_event_sync (context, keyval, keycode, state);
if (source)
g_source_destroy (source);
return retval;
}
data->count = 1;
g_source_attach (source, NULL);
g_source_unref (source);
data->count_cb_id = g_source_get_id (source);
ibus_input_context_process_key_event_async (context,
keyval,
keycode - 8,
state,
-1,
NULL,
_process_key_event_reply_done,
data);
g_source_set_callback (source, _process_key_event_count_cb, data, NULL);
while (data->count)
g_main_context_iteration (NULL, TRUE);
/* #2498 Checking source->ref_count might cause Nautilus hang up
*/
retval = data->retval;
g_slice_free (ProcessKeyEventReplyData, data);
return retval;
}
static gboolean
_process_key_event (IBusInputContext *context,
#if GTK_CHECK_VERSION (3, 98, 4)
GdkEvent *event,
#else
GdkEventKey *event,
#endif
IBusIMContext *ibusimcontext)
{
guint state;
guint keyval = 0;
guint16 hardware_keycode = 0;
guint keycode = 0;
gboolean retval = FALSE;
#if GTK_CHECK_VERSION (3, 98, 4)
GdkModifierType gdkstate = gdk_event_get_modifier_state (event);
state = (uint)gdkstate;
if (gdk_event_get_event_type (event) == GDK_KEY_RELEASE)
state |= IBUS_RELEASE_MASK;
keyval = gdk_key_event_get_keyval (event);
hardware_keycode = gdk_key_event_get_keycode (event);
#else
state = event->state;
if (event->type == GDK_KEY_RELEASE)
state |= IBUS_RELEASE_MASK;
keyval = event->keyval;
hardware_keycode = event->hardware_keycode;
#endif
keycode = hardware_keycode;
switch (_use_sync_mode) {
case 1: {
retval = _process_key_event_sync (context, keyval, keycode, state);
break;
}
case 2: {
retval = _process_key_event_hybrid_async (context,
keyval, keycode, state);
break;
}
default: {
retval = _process_key_event_async (context,
keyval, keycode, state,
(GdkEvent *)event,
ibusimcontext);
break;
}
}
/* GTK4 does not provide gtk_key_snooper_install() and also
* GtkIMContextClass->filter_keypress() cannot send the updated
* GdkEventKey so event->state is not updated here in GTK4.
*/
#if !GTK_CHECK_VERSION (3, 98, 4)
if (retval)
event->state |= IBUS_HANDLED_MASK;
else
event->state |= IBUS_IGNORED_MASK;
#endif
return retval;
}
/* emit "retrieve-surrounding" glib signal of GtkIMContext, if
* context->caps has IBUS_CAP_SURROUNDING_TEXT and the current IBus
* engine needs surrounding-text.
*/
static gboolean
_request_surrounding_text (IBusIMContext *context)
{
gboolean return_value = TRUE;
if (context &&
(context->caps & IBUS_CAP_SURROUNDING_TEXT) != 0 &&
context->ibuscontext != NULL &&
ibus_input_context_needs_surrounding_text (context->ibuscontext)) {
IDEBUG ("requesting surrounding text");
g_signal_emit (context, _signal_retrieve_surrounding_id, 0,
&return_value);
}
return return_value;
}
static gboolean
_set_content_type (IBusIMContext *context)
{
#if GTK_CHECK_VERSION (3, 6, 0)
if (context->ibuscontext != NULL) {
GtkInputPurpose purpose;
GtkInputHints hints;
g_object_get (G_OBJECT (context),
"input-purpose", &purpose,
"input-hints", &hints,
NULL);
if (_use_discard_password) {
if (purpose == GTK_INPUT_PURPOSE_PASSWORD ||
purpose == GTK_INPUT_PURPOSE_PIN) {
return FALSE;
}
}
ibus_input_context_set_content_type (context->ibuscontext,
purpose,
hints);
}
#endif
return TRUE;
}
#if !GTK_CHECK_VERSION (3, 98, 4)
static gint
_key_snooper_cb (GtkWidget *widget,
GdkEventKey *event,
gpointer user_data)
{
IDEBUG ("%s", __FUNCTION__);
gboolean retval = FALSE;
IBusIMContext *ibusimcontext = NULL;
IBusInputContext *ibuscontext = NULL;
if (!_use_key_snooper)
return FALSE;
if (_focus_im_context != NULL &&
((IBusIMContext *) _focus_im_context)->has_focus == TRUE) {
ibusimcontext = (IBusIMContext *) _focus_im_context;
/* has IC with focus */
ibuscontext = ibusimcontext->ibuscontext;
}
else {
/* If no IC has focus, and fake IC has been created, then pass key events to fake IC. */
ibuscontext = _fake_context;
}
if (ibuscontext == NULL)
return FALSE;
if (G_UNLIKELY (event->state & IBUS_HANDLED_MASK))
return TRUE;
if (G_UNLIKELY (event->state & IBUS_IGNORED_MASK))
return FALSE;
do {
if (_fake_context != ibuscontext)
break;
/* window has input focus is not changed */
if (_input_window == event->window)
break;
if (_input_window != NULL) {
g_object_remove_weak_pointer ((GObject *) _input_window,
(gpointer *) &_input_window);
}
if (event->window != NULL) {
g_object_add_weak_pointer ((GObject *) event->window,
(gpointer *) &_input_window);
}
_input_window = event->window;
/* Trace widget has input focus, and listen focus events of it.
* It is workaround for Alt+Shift+Tab shortcut key issue(crosbug.com/8855).
* gtk_get_event_widget returns the widget that is associated with the
* GdkWindow of the GdkEvent.
* */
GtkWidget *widget = gtk_get_event_widget ((GdkEvent *)event);
/* g_assert (_input_widget != widget). */
if (_input_widget == widget)
break;
if (_input_widget != NULL) {
g_signal_handlers_disconnect_by_func (_input_widget,
(GCallback) _focus_in_cb,
NULL);
g_signal_handlers_disconnect_by_func (_input_widget,
(GCallback) _focus_out_cb,
NULL);
g_object_remove_weak_pointer ((GObject *) _input_widget,
(gpointer *) &_input_widget);
}
if (widget != NULL) {
g_signal_connect (widget,
"focus-in-event",
(GCallback) _focus_in_cb,
NULL);
g_signal_connect (widget,
"focus-out-event",
(GCallback) _focus_out_cb,
NULL);
g_object_add_weak_pointer ((GObject *) widget,
(gpointer *) &_input_widget);
}
_input_widget = widget;
} while (0);
if (ibusimcontext != NULL && event->type == GDK_KEY_PRESS) {
/* "retrieve-surrounding" signal sometimes calls unref by
* gtk_im_multicontext_get_slave() because priv->context_id is not
* the latest than global_context_id in GtkIMMulticontext.
* Since _focus_im_context is gotten by the focus_in event,
* it would be good to call ref here.
*
* Most release key events would be redundant from
* _ibus_context_forward_key_event_cb ().
*/
g_object_ref (ibusimcontext);
_request_surrounding_text (ibusimcontext);
ibusimcontext->time = event->time;
}
retval = _process_key_event (ibuscontext, event, ibusimcontext);
if (ibusimcontext != NULL && event->type == GDK_KEY_PRESS) {
/* unref ibusimcontext could call ibus_im_context_finalize here
* because "retrieve-surrounding" signal could call unref.
*/
g_object_unref (ibusimcontext);
}
return retval;
}
#endif
static gboolean
_get_boolean_env (const gchar *name,
gboolean defval)
{
const gchar *value = g_getenv (name);
if (value == NULL)
return defval;
if (g_strcmp0 (value, "") == 0 ||
g_strcmp0 (value, "0") == 0 ||
g_strcmp0 (value, "false") == 0 ||
g_strcmp0 (value, "False") == 0 ||
g_strcmp0 (value, "FALSE") == 0) {
return FALSE;
}
return TRUE;
}
static char
_get_char_env (const gchar *name,
char defval)
{
const gchar *value = g_getenv (name);
if (value == NULL)
return defval;
if (g_strcmp0 (value, "") == 0 ||
g_strcmp0 (value, "0") == 0 ||
g_strcmp0 (value, "false") == 0 ||
g_strcmp0 (value, "False") == 0 ||
g_strcmp0 (value, "FALSE") == 0) {
return 0;
} else if (!g_strcmp0 (value, "2")) {
return 2;
}
return 1;
}
static void
daemon_name_appeared (GDBusConnection *connection,
const gchar *name,
const gchar *owner,
gpointer data)
{
if (!g_strcmp0 (ibus_bus_get_service_name (_bus), IBUS_SERVICE_PORTAL)) {
_daemon_is_running = TRUE;
return;
}
/* If ibus-daemon is running and run ssh -X localhost,
* daemon_name_appeared() is called but ibus_get_address() == NULL
* because the hostname and display number are different between
* ibus-daemon and clients. So IBusBus would not be connected and
* ibusimcontext->ibuscontext == NULL and ibusimcontext->events_queue
* could go beyond MAX_QUEUED_EVENTS . */
_daemon_is_running = (ibus_get_address () != NULL);
}
static void
daemon_name_vanished (GDBusConnection *connection,
const gchar *name,
gpointer data)
{
_daemon_is_running = FALSE;
}
static void
ibus_im_context_class_init (IBusIMContextClass *class)
{
IDEBUG ("%s", __FUNCTION__);
GtkIMContextClass *im_context_class = GTK_IM_CONTEXT_CLASS (class);
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
parent_class = (GtkIMContextClass *) g_type_class_peek_parent (class);
im_context_class->reset = ibus_im_context_reset;
im_context_class->focus_in = ibus_im_context_focus_in;
im_context_class->focus_out = ibus_im_context_focus_out;
im_context_class->filter_keypress = ibus_im_context_filter_keypress;
im_context_class->get_preedit_string = ibus_im_context_get_preedit_string;
#if GTK_CHECK_VERSION (3, 98, 4)
im_context_class->set_client_widget = ibus_im_context_set_client_widget;
#else
im_context_class->set_client_window = ibus_im_context_set_client_window;
#endif
im_context_class->set_cursor_location = ibus_im_context_set_cursor_location;
im_context_class->set_use_preedit = ibus_im_context_set_use_preedit;
#if GTK_CHECK_VERSION (4, 1, 2)
im_context_class->set_surrounding_with_selection
= ibus_im_context_set_surrounding_with_selection;
#else
im_context_class->set_surrounding = ibus_im_context_set_surrounding;
#endif
gobject_class->notify = ibus_im_context_notify;
gobject_class->finalize = ibus_im_context_finalize;
_signal_commit_id =
g_signal_lookup ("commit", G_TYPE_FROM_CLASS (class));
g_assert (_signal_commit_id != 0);
_signal_preedit_changed_id =
g_signal_lookup ("preedit-changed", G_TYPE_FROM_CLASS (class));
g_assert (_signal_preedit_changed_id != 0);
_signal_preedit_start_id =
g_signal_lookup ("preedit-start", G_TYPE_FROM_CLASS (class));
g_assert (_signal_preedit_start_id != 0);
_signal_preedit_end_id =
g_signal_lookup ("preedit-end", G_TYPE_FROM_CLASS (class));
g_assert (_signal_preedit_end_id != 0);
_signal_delete_surrounding_id =
g_signal_lookup ("delete-surrounding", G_TYPE_FROM_CLASS (class));
g_assert (_signal_delete_surrounding_id != 0);
_signal_retrieve_surrounding_id =
g_signal_lookup ("retrieve-surrounding", G_TYPE_FROM_CLASS (class));
g_assert (_signal_retrieve_surrounding_id != 0);
#if GTK_CHECK_VERSION (3, 98, 4)
/* IBus GtkIMModule, QtIMModlue, ibus-x11, ibus-wayland are called as
* IBus clients.
* Each GTK application, each QT application, Xorg server, Wayland
* comppsitor are called as IBus event owners here.
*
* The IBus client processes the key events between the IBus event owner
* and the IBus daemon and the procedure step is to:
*
* receive the key event from the IBus event owner and forward the
* event to the IBus daemon with the "ProcessKeyEvent" D-Bus method at
* first,
*
* receive the return value from the IBus daemon with the "ProessKeyEvent"
* D-Bus method and forward the value to the IBus event owner secondly and
* the return value includes if the key event is processed normally or not.
*
* The procedure behavior can be changed by the "IBUS_ENABLE_SYNC_MODE"
* environment variable with the synchronous procedure or asynchronous
* one and value is:
*
* 1: Synchronous process key event:
* Wait for the return of the IBus "ProcessKeyEvent" D-Bus method
* synchronously and forward the return value to the IBus event owner
* synchronously.
* 0: Asynchronous process key event:
* Return to the IBus event owner as the key event is processed normally
* at first as soon as the IBus client receives the event from the
* IBus event owner and also forward the event to the IBus daemon with
* the "ProcessKeyEvent" D-Bus method and wait for the return value of
* the D-Bus method *asynchronously*.
* If the return value indicates the key event is disposed by IBus,
* the IBus client does not perform anything. Otherwise the IBus client
* forwards the key event with the gdk_event_put() in GTK3,
* gtk_im_context_filter_key() in GTK4, IMForwardEvent() in XIM API.
* 2: Hybrid asynchronous process key event:
* Wait for the return of the IBus "ProcessKeyEvent" D-Bus method
* *asynchronously* with a GSource loop and forward the return value
* to the IBus event owner synchronously. So IBus clients perform
* virtually synchronously to cover problems of IBus synchronous APIs.
*
* The purpose of the asynchronous process is that each IBus input
* method can process the key events without D-Bus timeout and also
* the IBus synchronous process has a problem that the IBus
* "ProcessKeyEvent" D-Bus method cannot send the commit-text and
* forwar-key-event D-Bus signals until the D-Bus method is finished.
*
* Relative issues: #1713, #2486
*/
_use_sync_mode = _get_char_env ("IBUS_ENABLE_SYNC_MODE", 1);
#else
_use_key_snooper = !_get_boolean_env ("IBUS_DISABLE_SNOOPER",
!(ENABLE_SNOOPER));
_use_sync_mode = (char)_get_char_env ("IBUS_ENABLE_SYNC_MODE", 0);
#endif
_use_discard_password = _get_boolean_env ("IBUS_DISCARD_PASSWORD", FALSE);
#define CHECK_APP_IN_CSV_ENV_VARIABLES(retval, \
env_apps, \
fallback_apps, \
value_if_found) \
{ \
const gchar * prgname = g_get_prgname (); \
gchar **p; \
gchar ** apps; \
if (g_getenv ((#env_apps))) { \
fallback_apps = g_getenv (#env_apps); \