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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) 2008-2013 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/gdkkeysyms.h>
#include <ibus.h>
#include "ibusimcontext.h"
#ifdef GDK_WINDOWING_WAYLAND
#include <gdk/gdkwayland.h>
#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;
GdkWindow *client_window;
IBusInputContext *ibuscontext;
/* preedit status */
gchar *preedit_string;
PangoAttrList *preedit_attrs;
gint preedit_cursor_pos;
gboolean preedit_visible;
GdkRectangle cursor_area;
gboolean has_focus;
guint32 time;
gint caps;
/* cancellable */
GCancellable *cancellable;
GQueue *events_queue;
};
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;
static const gchar *_no_snooper_apps = NO_SNOOPER_APPS;
static gboolean _use_key_snooper = ENABLE_SNOOPER;
static guint _key_snooper_id = 0;
static gboolean _use_sync_mode = FALSE;
static GtkIMContext *_focus_im_context = NULL;
static IBusInputContext *_fake_context = NULL;
static GdkWindow *_input_window = NULL;
static GtkWidget *_input_widget = NULL;
/* 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,
GdkEventKey *key);
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);
static void ibus_im_context_set_client_window
(GtkIMContext *context,
GdkWindow *client);
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);
static void ibus_im_context_set_surrounding
(GtkIMContext *slave,
const gchar *text,
gint len,
gint cursor_index);
/* static methods*/
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 void _request_surrounding_text (IBusIMContext *context);
static void _create_fake_input_context (void);
static void _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);
}
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;
}
static void
_process_key_event_done (GObject *object,
GAsyncResult *res,
gpointer user_data)
{
IBusInputContext *context = (IBusInputContext *)object;
GdkEventKey *event = (GdkEventKey *) 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);
}
if (retval == FALSE) {
event->state |= IBUS_IGNORED_MASK;
gdk_event_put ((GdkEvent *)event);
}
gdk_event_free ((GdkEvent *)event);
}
static gboolean
_process_key_event (IBusInputContext *context,
GdkEventKey *event)
{
guint state = event->state;
gboolean retval = FALSE;
if (event->type == GDK_KEY_RELEASE) {
state |= IBUS_RELEASE_MASK;
}
if (_use_sync_mode) {
retval = ibus_input_context_process_key_event (context,
event->keyval,
event->hardware_keycode - 8,
state);
}
else {
ibus_input_context_process_key_event_async (context,
event->keyval,
event->hardware_keycode - 8,
state,
-1,
NULL,
_process_key_event_done,
gdk_event_copy ((GdkEvent *) event));
retval = TRUE;
}
if (retval) {
event->state |= IBUS_HANDLED_MASK;
}
else {
event->state |= IBUS_IGNORED_MASK;
}
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 void
_request_surrounding_text (IBusIMContext *context)
{
if (context &&
(context->caps & IBUS_CAP_SURROUNDING_TEXT) != 0 &&
context->ibuscontext != NULL &&
ibus_input_context_needs_surrounding_text (context->ibuscontext)) {
gboolean return_value;
IDEBUG ("requesting surrounding text");
g_signal_emit (context, _signal_retrieve_surrounding_id, 0,
&return_value);
if (!return_value) {
context->caps &= ~IBUS_CAP_SURROUNDING_TEXT;
ibus_input_context_set_capabilities (context->ibuscontext,
context->caps);
}
}
}
static void
_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);
ibus_input_context_set_content_type (context->ibuscontext,
purpose,
hints);
}
#endif
}
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) {
/* "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.
*/
g_object_ref (ibusimcontext);
_request_surrounding_text (ibusimcontext);
ibusimcontext->time = event->time;
}
retval = _process_key_event (ibuscontext, event);
if (ibusimcontext != NULL) {
/* unref ibusimcontext could call ibus_im_context_finalize here
* because "retrieve-surrounding" signal could call unref.
*/
g_object_unref (ibusimcontext);
}
return retval;
}
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 void
daemon_name_appeared (GDBusConnection *connection,
const gchar *name,
const gchar *owner,
gpointer data)
{
/* 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;
im_context_class->set_client_window = ibus_im_context_set_client_window;
im_context_class->set_cursor_location = ibus_im_context_set_cursor_location;
im_context_class->set_use_preedit = ibus_im_context_set_use_preedit;
im_context_class->set_surrounding = ibus_im_context_set_surrounding;
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);
_use_key_snooper = !_get_boolean_env ("IBUS_DISABLE_SNOOPER",
!(ENABLE_SNOOPER));
_use_sync_mode = _get_boolean_env ("IBUS_ENABLE_SYNC_MODE", FALSE);
/* env IBUS_DISABLE_SNOOPER does not exist */
if (_use_key_snooper) {
/* disable snooper if app is in _no_snooper_apps */
const gchar * prgname = g_get_prgname ();
if (g_getenv ("IBUS_NO_SNOOPER_APPS")) {
_no_snooper_apps = g_getenv ("IBUS_NO_SNOOPER_APPS");
}
gchar **p;
gchar ** apps = g_strsplit (_no_snooper_apps, ",", 0);
for (p = apps; *p != NULL; p++) {
if (g_regex_match_simple (*p, prgname, 0, 0)) {
_use_key_snooper = FALSE;
break;
}
}
g_strfreev (apps);
}
/* init bus object */
if (_bus == NULL) {
_bus = ibus_bus_new_async ();
/* init the global fake context */
if (ibus_bus_is_connected (_bus)) {
_create_fake_input_context ();
}
g_signal_connect (_bus, "connected", G_CALLBACK (_bus_connected_cb), NULL);
}
/* always install snooper */
if (_key_snooper_id == 0) {
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
_key_snooper_id = gtk_key_snooper_install (_key_snooper_cb, NULL);
#pragma GCC diagnostic pop
}
_daemon_name_watch_id = g_bus_watch_name (G_BUS_TYPE_SESSION,
IBUS_SERVICE_IBUS,
G_BUS_NAME_WATCHER_FLAGS_NONE,
daemon_name_appeared,
daemon_name_vanished,
NULL,
NULL);
}
static void
ibus_im_context_class_fini (IBusIMContextClass *class)
{
if (_key_snooper_id != 0) {
IDEBUG ("snooper is terminated.");
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
gtk_key_snooper_remove (_key_snooper_id);
#pragma GCC diagnostic pop
_key_snooper_id = 0;
}
g_bus_unwatch_name (_daemon_name_watch_id);
}
/* Copied from gtk+2.0-2.20.1/modules/input/imcedilla.c to fix crosbug.com/11421.
* Overwrite the original Gtk+'s compose table in gtk+-2.x.y/gtk/gtkimcontextsimple.c. */
/* The difference between this and the default input method is the handling
* of C+acute - this method produces C WITH CEDILLA rather than C WITH ACUTE.
* For languages that use CCedilla and not acute, this is the preferred mapping,
* and is particularly important for pt_BR, where the us-intl keyboard is
* used extensively.
*/
static guint16 cedilla_compose_seqs[] = {
#ifdef DEPRECATED_GDK_KEYSYMS
GDK_dead_acute, GDK_C, 0, 0, 0, 0x00C7, /* LATIN_CAPITAL_LETTER_C_WITH_CEDILLA */
GDK_dead_acute, GDK_c, 0, 0, 0, 0x00E7, /* LATIN_SMALL_LETTER_C_WITH_CEDILLA */
GDK_Multi_key, GDK_apostrophe, GDK_C, 0, 0, 0x00C7, /* LATIN_CAPITAL_LETTER_C_WITH_CEDILLA */
GDK_Multi_key, GDK_apostrophe, GDK_c, 0, 0, 0x00E7, /* LATIN_SMALL_LETTER_C_WITH_CEDILLA */
GDK_Multi_key, GDK_C, GDK_apostrophe, 0, 0, 0x00C7, /* LATIN_CAPITAL_LETTER_C_WITH_CEDILLA */
GDK_Multi_key, GDK_c, GDK_apostrophe, 0, 0, 0x00E7, /* LATIN_SMALL_LETTER_C_WITH_CEDILLA */
#else
GDK_KEY_dead_acute, GDK_KEY_C, 0, 0, 0, 0x00C7, /* LATIN_CAPITAL_LETTER_C_WITH_CEDILLA */
GDK_KEY_dead_acute, GDK_KEY_c, 0, 0, 0, 0x00E7, /* LATIN_SMALL_LETTER_C_WITH_CEDILLA */
GDK_KEY_Multi_key, GDK_KEY_apostrophe, GDK_KEY_C, 0, 0, 0x00C7, /* LATIN_CAPITAL_LETTER_C_WITH_CEDILLA */
GDK_KEY_Multi_key, GDK_KEY_apostrophe, GDK_KEY_c, 0, 0, 0x00E7, /* LATIN_SMALL_LETTER_C_WITH_CEDILLA */
GDK_KEY_Multi_key, GDK_KEY_C, GDK_KEY_apostrophe, 0, 0, 0x00C7, /* LATIN_CAPITAL_LETTER_C_WITH_CEDILLA */
GDK_KEY_Multi_key, GDK_KEY_c, GDK_KEY_apostrophe, 0, 0, 0x00E7, /* LATIN_SMALL_LETTER_C_WITH_CEDILLA */
#endif
};
static void
ibus_im_context_init (GObject *obj)
{
IDEBUG ("%s", __FUNCTION__);
IBusIMContext *ibusimcontext = IBUS_IM_CONTEXT (obj);
ibusimcontext->client_window = NULL;
// Init preedit status
ibusimcontext->preedit_string = NULL;
ibusimcontext->preedit_attrs = NULL;
ibusimcontext->preedit_cursor_pos = 0;
ibusimcontext->preedit_visible = FALSE;
// Init cursor area
ibusimcontext->cursor_area.x = -1;
ibusimcontext->cursor_area.y = -1;
ibusimcontext->cursor_area.width = 0;
ibusimcontext->cursor_area.height = 0;
ibusimcontext->ibuscontext = NULL;
ibusimcontext->has_focus = FALSE;
ibusimcontext->time = GDK_CURRENT_TIME;
#ifdef ENABLE_SURROUNDING
ibusimcontext->caps = IBUS_CAP_PREEDIT_TEXT | IBUS_CAP_FOCUS | IBUS_CAP_SURROUNDING_TEXT;
#else
ibusimcontext->caps = IBUS_CAP_PREEDIT_TEXT | IBUS_CAP_FOCUS;
#endif
ibusimcontext->events_queue = g_queue_new ();
// Create slave im context
ibusimcontext->slave = gtk_im_context_simple_new ();
gtk_im_context_simple_add_table (GTK_IM_CONTEXT_SIMPLE (ibusimcontext->slave),
cedilla_compose_seqs,
4,
G_N_ELEMENTS (cedilla_compose_seqs) / (4 + 2));
g_signal_connect (ibusimcontext->slave,
"commit",
G_CALLBACK (_slave_commit_cb),
ibusimcontext);
g_signal_connect (ibusimcontext->slave,
"preedit-start",
G_CALLBACK (_slave_preedit_start_cb),
ibusimcontext);
g_signal_connect (ibusimcontext->slave,
"preedit-end",
G_CALLBACK (_slave_preedit_end_cb),
ibusimcontext);
g_signal_connect (ibusimcontext->slave,
"preedit-changed",
G_CALLBACK (_slave_preedit_changed_cb),
ibusimcontext);
g_signal_connect (ibusimcontext->slave,
"retrieve-surrounding",
G_CALLBACK (_slave_retrieve_surrounding_cb),
ibusimcontext);
g_signal_connect (ibusimcontext->slave,
"delete-surrounding",
G_CALLBACK (_slave_delete_surrounding_cb),
ibusimcontext);
if (ibus_bus_is_connected (_bus)) {
_create_input_context (ibusimcontext);
}
g_signal_connect (_bus, "connected", G_CALLBACK (_bus_connected_cb), obj);
}
static void
ibus_im_context_notify (GObject *obj,
GParamSpec *pspec)
{
IDEBUG ("%s", __FUNCTION__);
if (g_strcmp0 (pspec->name, "input-purpose") == 0 ||
g_strcmp0 (pspec->name, "input-hints") == 0) {
_set_content_type (IBUS_IM_CONTEXT (obj));
}
}
static void
ibus_im_context_finalize (GObject *obj)
{
IDEBUG ("%s", __FUNCTION__);
IBusIMContext *ibusimcontext = IBUS_IM_CONTEXT (obj);
g_signal_handlers_disconnect_by_func (_bus, G_CALLBACK (_bus_connected_cb), obj);
if (ibusimcontext->cancellable != NULL) {
/* Cancel any ongoing create input context request */
g_cancellable_cancel (ibusimcontext->cancellable);
g_object_unref (ibusimcontext->cancellable);
ibusimcontext->cancellable = NULL;
}
if (ibusimcontext->ibuscontext) {
ibus_proxy_destroy ((IBusProxy *)ibusimcontext->ibuscontext);
}
ibus_im_context_set_client_window ((GtkIMContext *)ibusimcontext, NULL);
if (ibusimcontext->slave) {
g_object_unref (ibusimcontext->slave);
ibusimcontext->slave = NULL;
}
// release preedit
if (ibusimcontext->preedit_string) {
g_free (ibusimcontext->preedit_string);
}
if (ibusimcontext->preedit_attrs) {
pango_attr_list_unref (ibusimcontext->preedit_attrs);
}
g_queue_free_full (ibusimcontext->events_queue,
(GDestroyNotify)gdk_event_free);
G_OBJECT_CLASS(parent_class)->finalize (obj);
}
static gboolean
ibus_im_context_filter_keypress (GtkIMContext *context,
GdkEventKey *event)
{
IDEBUG ("%s", __FUNCTION__);
IBusIMContext *ibusimcontext = IBUS_IM_CONTEXT (context);
if (!_daemon_is_running)
return gtk_im_context_filter_keypress (ibusimcontext->slave, event);
/* If context does not have focus, ibus will process key event in
* sync mode. It is a workaround for increase search in treeview.
*/
if (!ibusimcontext->has_focus)
return gtk_im_context_filter_keypress (ibusimcontext->slave, event);
if (event->state & IBUS_HANDLED_MASK)
return TRUE;
if (event->state & IBUS_IGNORED_MASK)
return gtk_im_context_filter_keypress (ibusimcontext->slave, event);
/* XXX it is a workaround for some applications do not set client
* window. */
if (ibusimcontext->client_window == NULL && event->window != NULL)
gtk_im_context_set_client_window ((GtkIMContext *)ibusimcontext,
event->window);
_request_surrounding_text (ibusimcontext);
ibusimcontext->time = event->time;
if (ibusimcontext->ibuscontext) {
if (_process_key_event (ibusimcontext->ibuscontext, event))
return TRUE;
else
return gtk_im_context_filter_keypress (ibusimcontext->slave,
event);
}
/* At this point we _should_ be waiting for the IBus context to be
* created or the connection to IBus to be established. If that's
* the case we queue events to be processed when the IBus context
* is ready. */
g_return_val_if_fail (ibusimcontext->cancellable != NULL ||
ibus_bus_is_connected (_bus) == FALSE,
FALSE);
g_queue_push_tail (ibusimcontext->events_queue,
gdk_event_copy ((GdkEvent *)event));
if (g_queue_get_length (ibusimcontext->events_queue) > MAX_QUEUED_EVENTS) {
g_warning ("Events queue growing too big, will start to drop.");
gdk_event_free ((GdkEvent *)
g_queue_pop_head (ibusimcontext->events_queue));
}
return TRUE;
}
static void
ibus_im_context_focus_in (GtkIMContext *context)
{
IDEBUG ("%s", __FUNCTION__);
IBusIMContext *ibusimcontext = (IBusIMContext *) context;
if (ibusimcontext->has_focus)
return;
/* don't set focus on password entry */
if (ibusimcontext->client_window != NULL) {
GtkWidget *widget;
gdk_window_get_user_data (ibusimcontext->client_window,
(gpointer *)&widget);
if (GTK_IS_ENTRY (widget) &&
!gtk_entry_get_visibility (GTK_ENTRY (widget))) {
return;
}
}
/* Do not call gtk_im_context_focus_out() here.
* google-chrome's notification popup window (Pushbullet)
* takes the focus and the popup window disappears.
* So other applications lose the focus because
* ibusimcontext->has_focus is FALSE if
* gtk_im_context_focus_out() is called here when
* _focus_im_context != context.
*/
if (_focus_im_context == NULL) {
/* focus out fake context */
if (_fake_context != NULL) {
ibus_input_context_focus_out (_fake_context);
}
}
ibusimcontext->has_focus = TRUE;
if (ibusimcontext->ibuscontext) {
_set_content_type (ibusimcontext);
ibus_input_context_focus_in (ibusimcontext->ibuscontext);
}
gtk_im_context_focus_in (ibusimcontext->slave);
/* set_cursor_location_internal() will get origin from X server,
* it blocks UI. So delay it to idle callback. */
gdk_threads_add_idle_full (G_PRIORITY_DEFAULT_IDLE,
(GSourceFunc) _set_cursor_location_internal,
g_object_ref (ibusimcontext),
(GDestroyNotify) g_object_unref);
/* retrieve the initial surrounding-text (regardless of whether
* the current IBus engine needs surrounding-text) */
_request_surrounding_text (ibusimcontext);
g_object_add_weak_pointer ((GObject *) context,
(gpointer *) &_focus_im_context);
_focus_im_context = context;
}
static void
ibus_im_context_focus_out (GtkIMContext *context)
{
IDEBUG ("%s", __FUNCTION__);
IBusIMContext *ibusimcontext = (IBusIMContext *) context;
if (ibusimcontext->has_focus == FALSE) {
return;
}
g_object_remove_weak_pointer ((GObject *) context,
(gpointer *) &_focus_im_context);
_focus_im_context = NULL;
ibusimcontext->has_focus = FALSE;
if (ibusimcontext->ibuscontext) {
ibus_input_context_focus_out (ibusimcontext->ibuscontext);
}
gtk_im_context_focus_out (ibusimcontext->slave);
/* focus in the fake ic */
if (_fake_context != NULL) {
ibus_input_context_focus_in (_fake_context);
}
}
static void
ibus_im_context_reset (GtkIMContext *context)
{
IDEBUG ("%s", __FUNCTION__);
IBusIMContext *ibusimcontext = IBUS_IM_CONTEXT (context);
if (ibusimcontext->ibuscontext) {
ibus_input_context_reset (ibusimcontext->ibuscontext);
}
gtk_im_context_reset (ibusimcontext->slave);
}
static void
ibus_im_context_get_preedit_string (GtkIMContext *context,
gchar **str,
PangoAttrList **attrs,
gint *cursor_pos)
{
IDEBUG ("%s", __FUNCTION__);
IBusIMContext *ibusimcontext = IBUS_IM_CONTEXT (context);
if (ibusimcontext->preedit_visible) {
if (str) {
*str = g_strdup (ibusimcontext->preedit_string ? ibusimcontext->preedit_string: "");
}
if (attrs) {
*attrs = ibusimcontext->preedit_attrs ?
pango_attr_list_ref (ibusimcontext->preedit_attrs):
pango_attr_list_new ();
}
if (cursor_pos) {
*cursor_pos = ibusimcontext->preedit_cursor_pos;
}
}
else {
if (str) {
*str = g_strdup ("");
}
if (attrs) {
*attrs = pango_attr_list_new ();
}
if (cursor_pos) {
*cursor_pos = 0;
}
}
IDEBUG ("str=%s", *str);
}
static void
ibus_im_context_set_client_window (GtkIMContext *context, GdkWindow *client)
{
IDEBUG ("%s", __FUNCTION__);
IBusIMContext *ibusimcontext = IBUS_IM_CONTEXT (context);
if (ibusimcontext->client_window) {
g_object_unref (ibusimcontext->client_window);
ibusimcontext->client_window = NULL;
}
if (client != NULL)
ibusimcontext->client_window = g_object_ref (client);
if (ibusimcontext->slave)
gtk_im_context_set_client_window (ibusimcontext->slave, client);
}