forked from phuang/ibus
/
ibusimcontext.c
1234 lines (1053 loc) · 39.4 KB
/
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) 2008-2010 Peng Huang <shawn.p.huang@gmail.com>
* Copyright (C) 2008-2010 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 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include <gdk/gdkx.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <sys/un.h>
#include <string.h>
#include <ibus.h>
#include "ibusimcontext.h"
#if !GTK_CHECK_VERSION (2, 90, 0)
# define DEPRECATED_GDK_KEYSYMS 1
#endif
#ifdef DEBUG
# define IDEBUG g_debug
#else
# define IDEBUG(a...)
#endif
struct _IBusIMContext {
GtkIMContext parent;
/* instance members */
GtkIMContext *slave;
GdkWindow *client_window;
/* enabled */
gboolean enable;
IBusInputContext *ibuscontext;
/* preedit status */
gchar *preedit_string;
PangoAttrList *preedit_attrs;
gint preedit_cursor_pos;
gboolean preedit_visible;
GdkRectangle cursor_area;
gboolean has_focus;
gint caps;
};
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 *_snooper_apps = SNOOPER_APPS;
static gboolean _use_key_snooper = ENABLE_SNOOPER;
static GtkIMContext *_focus_im_context = NULL;
static IBusInputContext *_fake_context = NULL;
static GdkWindow *_input_window = NULL;
/* functions prototype */
static void ibus_im_context_class_init (IBusIMContextClass *klass);
static void ibus_im_context_init (GObject *obj);
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 methods*/
static void _create_input_context (IBusIMContext *context);
static void _set_cursor_location_internal
(GtkIMContext *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 void _slave_retrieve_surrounding_cb
(GtkIMContext *slave,
IBusIMContext *context);
static void _slave_delete_surrounding_cb
(GtkIMContext *slave,
gint offset_from_cursor,
guint nchars,
IBusIMContext *context);
static void _create_fake_input_context (void);
static GType _ibus_type_im_context = 0;
static GtkIMContextClass *parent_class = NULL;
static IBusBus *_bus = NULL;
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,
NULL, /* class finialize */
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 gint
_key_snooper_cb (GtkWidget *widget,
GdkEventKey *event,
gpointer user_data)
{
IDEBUG ("%s", __FUNCTION__);
gboolean retval = FALSE;
IBusIMContext *ibusimcontext = (IBusIMContext *) _focus_im_context;
IBusInputContext *ibuscontext = NULL;
if (ibusimcontext != NULL &&
ibusimcontext->has_focus == TRUE) {
/* has IC with focus and use_key_snooper is true */
if (_use_key_snooper)
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;
if (_fake_context == ibuscontext && _input_window != event->window) {
if (_input_window)
g_object_unref (_input_window);
if (event->window)
g_object_ref (event->window);
_input_window = event->window;
}
switch (event->type) {
case GDK_KEY_RELEASE:
retval = ibus_input_context_process_key_event (ibuscontext,
event->keyval,
event->hardware_keycode - 8,
event->state | IBUS_RELEASE_MASK);
break;
case GDK_KEY_PRESS:
retval = ibus_input_context_process_key_event (ibuscontext,
event->keyval,
event->hardware_keycode - 8,
event->state);
break;
default:
retval = FALSE;
break;
}
if (retval) {
event->state |= IBUS_HANDLED_MASK;
}
else {
event->state |= IBUS_IGNORED_MASK;
}
return retval;
}
static void
ibus_im_context_class_init (IBusIMContextClass *klass)
{
IDEBUG ("%s", __FUNCTION__);
GtkIMContextClass *im_context_class = GTK_IM_CONTEXT_CLASS (klass);
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
parent_class = (GtkIMContextClass *) g_type_class_peek_parent (klass);
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;
gobject_class->finalize = ibus_im_context_finalize;
_signal_commit_id =
g_signal_lookup ("commit", G_TYPE_FROM_CLASS (klass));
g_assert (_signal_commit_id != 0);
_signal_preedit_changed_id =
g_signal_lookup ("preedit-changed", G_TYPE_FROM_CLASS (klass));
g_assert (_signal_preedit_changed_id != 0);
_signal_preedit_start_id =
g_signal_lookup ("preedit-start", G_TYPE_FROM_CLASS (klass));
g_assert (_signal_preedit_start_id != 0);
_signal_preedit_end_id =
g_signal_lookup ("preedit-end", G_TYPE_FROM_CLASS (klass));
g_assert (_signal_preedit_end_id != 0);
_signal_delete_surrounding_id =
g_signal_lookup ("delete-surrounding", G_TYPE_FROM_CLASS (klass));
g_assert (_signal_delete_surrounding_id != 0);
_signal_retrieve_surrounding_id =
g_signal_lookup ("retrieve-surrounding", G_TYPE_FROM_CLASS (klass));
g_assert (_signal_retrieve_surrounding_id != 0);
const gchar *ibus_snooper = g_getenv ("IBUS_SNOOPER");
if (ibus_snooper) {
/* env IBUS_SNOOPER exist */
if (g_strcmp0 (ibus_snooper, "") == 0 ||
g_strcmp0 (ibus_snooper, "0") == 0 ||
g_strcmp0 (ibus_snooper, "false") == 0 ||
g_strcmp0 (ibus_snooper, "FALSE") == 0) {
_use_key_snooper = FALSE;
}
else {
_use_key_snooper = TRUE;
}
}
else {
/* env IBUS_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_SNOOPER_APPS")) {
_snooper_apps = g_getenv ("IBUS_SNOOPER_APPS");
}
gchar **p;
gchar ** apps = g_strsplit (_snooper_apps, ",", 0);
for (p = apps; *p != NULL; p++) {
if (g_regex_match_simple (*p, prgname, 0, 0)) {
_use_key_snooper = TRUE;
break;
}
}
g_strfreev (apps);
}
}
/* init bus object */
if (_bus == NULL) {
ibus_set_display (gdk_display_get_name (gdk_display_get_default ()));
_bus = ibus_bus_new();
}
if (ibus_bus_is_connected (_bus)) {
_create_fake_input_context ();
}
g_signal_connect (_bus, "connected", G_CALLBACK (_bus_connected_cb), NULL);
/* always install snooper */
gtk_key_snooper_install (_key_snooper_cb, NULL);
}
static void
ibus_im_context_init (GObject *obj)
{
IDEBUG ("%s", __FUNCTION__);
IBusIMContext *ibusimcontext = IBUS_IM_CONTEXT (obj);
ibusimcontext->client_window = NULL;
// Init ibus status
ibusimcontext->enable = FALSE;
// 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->caps = IBUS_CAP_PREEDIT_TEXT | IBUS_CAP_FOCUS | IBUS_CAP_SURROUNDING_TEXT;
// Create slave im context
ibusimcontext->slave = gtk_im_context_simple_new ();
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_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->ibuscontext) {
ibus_object_destroy ((IBusObject *)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_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 (G_LIKELY (ibusimcontext->ibuscontext && ibusimcontext->has_focus)) {
/* If context does not have focus, ibus will process key event in sync mode.
* It is a workaround for increase search in treeview.
*/
gboolean retval = FALSE;
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);
switch (event->type) {
case GDK_KEY_RELEASE:
retval = ibus_input_context_process_key_event (ibusimcontext->ibuscontext,
event->keyval,
event->hardware_keycode - 8,
event->state | IBUS_RELEASE_MASK);
break;
case GDK_KEY_PRESS:
retval = ibus_input_context_process_key_event (ibusimcontext->ibuscontext,
event->keyval,
event->hardware_keycode - 8,
event->state);
break;
default:
retval = FALSE;
}
if (retval) {
event->state |= IBUS_HANDLED_MASK;
return TRUE;
}
else {
event->state |= IBUS_IGNORED_MASK;
return gtk_im_context_filter_keypress (ibusimcontext->slave, event);
}
}
else {
return gtk_im_context_filter_keypress (ibusimcontext->slave, event);
}
}
static void
_weak_notify_cb (gpointer data,
GObject *context)
{
if (_focus_im_context == (GtkIMContext *)context)
_focus_im_context = NULL;
}
static void
ibus_im_context_focus_in (GtkIMContext *context)
{
IDEBUG ("%s", __FUNCTION__);
IBusIMContext *ibusimcontext = IBUS_IM_CONTEXT (context);
if (_focus_im_context != NULL && _focus_im_context != context) {
gtk_im_context_focus_out (_focus_im_context);
g_assert (_focus_im_context == NULL);
}
ibusimcontext->has_focus = TRUE;
if (ibusimcontext->ibuscontext) {
ibus_input_context_focus_in (ibusimcontext->ibuscontext);
}
gtk_im_context_focus_in (ibusimcontext->slave);
_set_cursor_location_internal (context);
if (_focus_im_context != context) {
g_object_weak_ref ((GObject *) context, _weak_notify_cb, NULL);
_focus_im_context = context;
}
}
static void
ibus_im_context_focus_out (GtkIMContext *context)
{
IDEBUG ("%s", __FUNCTION__);
IBusIMContext *ibusimcontext = IBUS_IM_CONTEXT (context);
if (_focus_im_context == context) {
g_object_weak_unref ((GObject *)_focus_im_context, _weak_notify_cb, NULL);
_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)
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->enable) {
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;
}
}
}
else {
gtk_im_context_get_preedit_string (ibusimcontext->slave, str, attrs, cursor_pos);
}
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);
}
static void
_set_cursor_location_internal (GtkIMContext *context)
{
IBusIMContext *ibusimcontext = IBUS_IM_CONTEXT (context);
GdkRectangle area;
gint x, y;
if(ibusimcontext->client_window == NULL || ibusimcontext->ibuscontext == NULL) {
return;
}
area = ibusimcontext->cursor_area;
if (area.x == -1 && area.y == -1 && area.width == 0 && area.height == 0) {
gint w, h;
gdk_drawable_get_size (ibusimcontext->client_window, &w, &h);
area.y += h;
area.x = 0;
}
gdk_window_get_origin (ibusimcontext->client_window, &x, &y);
area.x += x;
area.y += y;
ibus_input_context_set_cursor_location (ibusimcontext->ibuscontext,
area.x,
area.y,
area.width,
area.height);
}
static void
ibus_im_context_set_cursor_location (GtkIMContext *context, GdkRectangle *area)
{
IDEBUG ("%s", __FUNCTION__);
IBusIMContext *ibusimcontext = IBUS_IM_CONTEXT (context);
ibusimcontext->cursor_area = *area;
_set_cursor_location_internal (context);
gtk_im_context_set_cursor_location (ibusimcontext->slave, area);
}
static void
ibus_im_context_set_use_preedit (GtkIMContext *context, gboolean use_preedit)
{
IDEBUG ("%s", __FUNCTION__);
IBusIMContext *ibusimcontext = IBUS_IM_CONTEXT (context);
if(ibusimcontext->ibuscontext) {
if (use_preedit) {
ibusimcontext->caps |= IBUS_CAP_PREEDIT_TEXT;
}
else {
ibusimcontext->caps &= ~IBUS_CAP_PREEDIT_TEXT;
}
ibus_input_context_set_capabilities (ibusimcontext->ibuscontext, ibusimcontext->caps);
}
gtk_im_context_set_use_preedit (ibusimcontext->slave, use_preedit);
}
static void
_bus_connected_cb (IBusBus *bus,
IBusIMContext *ibusimcontext)
{
IDEBUG ("%s", __FUNCTION__);
if (ibusimcontext)
_create_input_context (ibusimcontext);
else
_create_fake_input_context ();
}
static void
_ibus_context_commit_text_cb (IBusInputContext *ibuscontext,
IBusText *text,
IBusIMContext *ibusimcontext)
{
IDEBUG ("%s", __FUNCTION__);
g_signal_emit (ibusimcontext, _signal_commit_id, 0, text->text);
}
static gboolean
_key_is_modifier (guint keyval)
{
/* See gdkkeys-x11.c:_gdk_keymap_key_is_modifier() for how this
* really should be implemented */
switch (keyval) {
#ifdef DEPRECATED_GDK_KEYSYMS
case GDK_Shift_L:
case GDK_Shift_R:
case GDK_Control_L:
case GDK_Control_R:
case GDK_Caps_Lock:
case GDK_Shift_Lock:
case GDK_Meta_L:
case GDK_Meta_R:
case GDK_Alt_L:
case GDK_Alt_R:
case GDK_Super_L:
case GDK_Super_R:
case GDK_Hyper_L:
case GDK_Hyper_R:
case GDK_ISO_Lock:
case GDK_ISO_Level2_Latch:
case GDK_ISO_Level3_Shift:
case GDK_ISO_Level3_Latch:
case GDK_ISO_Level3_Lock:
case GDK_ISO_Level5_Shift:
case GDK_ISO_Level5_Latch:
case GDK_ISO_Level5_Lock:
case GDK_ISO_Group_Shift:
case GDK_ISO_Group_Latch:
case GDK_ISO_Group_Lock:
return TRUE;
#else
case GDK_KEY_Shift_L:
case GDK_KEY_Shift_R:
case GDK_KEY_Control_L:
case GDK_KEY_Control_R:
case GDK_KEY_Caps_Lock:
case GDK_KEY_Shift_Lock:
case GDK_KEY_Meta_L:
case GDK_KEY_Meta_R:
case GDK_KEY_Alt_L:
case GDK_KEY_Alt_R:
case GDK_KEY_Super_L:
case GDK_KEY_Super_R:
case GDK_KEY_Hyper_L:
case GDK_KEY_Hyper_R:
case GDK_KEY_ISO_Lock:
case GDK_KEY_ISO_Level2_Latch:
case GDK_KEY_ISO_Level3_Shift:
case GDK_KEY_ISO_Level3_Latch:
case GDK_KEY_ISO_Level3_Lock:
case GDK_KEY_ISO_Level5_Shift:
case GDK_KEY_ISO_Level5_Latch:
case GDK_KEY_ISO_Level5_Lock:
case GDK_KEY_ISO_Group_Shift:
case GDK_KEY_ISO_Group_Latch:
case GDK_KEY_ISO_Group_Lock:
return TRUE;
#endif
default:
return FALSE;
}
}
/* Copy from gdk */
static GdkEventKey *
_create_gdk_event (IBusIMContext *ibusimcontext,
guint keyval,
guint keycode,
guint state)
{
gunichar c = 0;
gchar buf[8];
GdkEventKey *event = (GdkEventKey *)gdk_event_new ((state & IBUS_RELEASE_MASK) ? GDK_KEY_RELEASE : GDK_KEY_PRESS);
if (ibusimcontext && ibusimcontext->client_window)
event->window = g_object_ref (ibusimcontext->client_window);
else if (_input_window)
event->window = g_object_ref (_input_window);
event->time = GDK_CURRENT_TIME;
event->send_event = FALSE;
event->state = state;
event->keyval = keyval;
event->string = NULL;
event->length = 0;
event->hardware_keycode = (keycode != 0) ? keycode + 8 : 0;
event->group = 0;
event->is_modifier = _key_is_modifier (keyval);
#ifdef DEPRECATED_GDK_KEYSYMS
if (keyval != GDK_VoidSymbol)
#else
if (keyval != GDK_KEY_VoidSymbol)
#endif
c = gdk_keyval_to_unicode (keyval);
if (c) {
gsize bytes_written;
gint len;
/* Apply the control key - Taken from Xlib
*/
if (event->state & GDK_CONTROL_MASK) {
if ((c >= '@' && c < '\177') || c == ' ') c &= 0x1F;
else if (c == '2') {
event->string = g_memdup ("\0\0", 2);
event->length = 1;
buf[0] = '\0';
goto out;
}
else if (c >= '3' && c <= '7') c -= ('3' - '\033');
else if (c == '8') c = '\177';
else if (c == '/') c = '_' & 0x1F;
}
len = g_unichar_to_utf8 (c, buf);
buf[len] = '\0';
event->string = g_locale_from_utf8 (buf, len,
NULL, &bytes_written,
NULL);
if (event->string)
event->length = bytes_written;
#ifdef DEPRECATED_GDK_KEYSYMS
} else if (keyval == GDK_Escape) {
#else
} else if (keyval == GDK_KEY_Escape) {
#endif
event->length = 1;
event->string = g_strdup ("\033");
}
#ifdef DEPRECATED_GDK_KEYSYMS
else if (keyval == GDK_Return ||
keyval == GDK_KP_Enter) {
#else
else if (keyval == GDK_KEY_Return ||
keyval == GDK_KEY_KP_Enter) {
#endif
event->length = 1;
event->string = g_strdup ("\r");
}
if (!event->string) {
event->length = 0;
event->string = g_strdup ("");
}
out:
return event;
}
static void
_ibus_context_forward_key_event_cb (IBusInputContext *ibuscontext,
guint keyval,
guint keycode,
guint state,
IBusIMContext *ibusimcontext)
{
IDEBUG ("%s", __FUNCTION__);
GdkEventKey *event = _create_gdk_event (ibusimcontext, keyval, keycode, state);
gdk_event_put ((GdkEvent *)event);
gdk_event_free ((GdkEvent *)event);
}
static void
_ibus_context_delete_surrounding_text_cb (IBusInputContext *ibuscontext,
gint offset_from_cursor,
guint nchars,
IBusIMContext *ibusimcontext)
{
gboolean return_value;
g_signal_emit (ibusimcontext, _signal_delete_surrounding_id, 0, offset_from_cursor, nchars, &return_value);
}
static void
_ibus_context_update_preedit_text_cb (IBusInputContext *ibuscontext,
IBusText *text,
gint cursor_pos,
gboolean visible,
IBusIMContext *ibusimcontext)
{
IDEBUG ("%s", __FUNCTION__);
const gchar *str;
gboolean flag;
if (ibusimcontext->preedit_string) {
g_free (ibusimcontext->preedit_string);
}
if (ibusimcontext->preedit_attrs) {
pango_attr_list_unref (ibusimcontext->preedit_attrs);
ibusimcontext->preedit_attrs = NULL;
}
str = text->text;
ibusimcontext->preedit_string = g_strdup (str);
if (text->attrs) {
guint i;
ibusimcontext->preedit_attrs = pango_attr_list_new ();
for (i = 0; ; i++) {
IBusAttribute *attr = ibus_attr_list_get (text->attrs, i);
if (attr == NULL) {
break;
}
PangoAttribute *pango_attr;
switch (attr->type) {
case IBUS_ATTR_TYPE_UNDERLINE:
pango_attr = pango_attr_underline_new (attr->value);
break;
case IBUS_ATTR_TYPE_FOREGROUND:
pango_attr = pango_attr_foreground_new (
((attr->value & 0xff0000) >> 8) | 0xff,
((attr->value & 0x00ff00)) | 0xff,
((attr->value & 0x0000ff) << 8) | 0xff);
break;
case IBUS_ATTR_TYPE_BACKGROUND:
pango_attr = pango_attr_background_new (
((attr->value & 0xff0000) >> 8) | 0xff,
((attr->value & 0x00ff00)) | 0xff,
((attr->value & 0x0000ff) << 8) | 0xff);
break;
default:
continue;
}
pango_attr->start_index = g_utf8_offset_to_pointer (str, attr->start_index) - str;
pango_attr->end_index = g_utf8_offset_to_pointer (str, attr->end_index) - str;
pango_attr_list_insert (ibusimcontext->preedit_attrs, pango_attr);
}
}
ibusimcontext->preedit_cursor_pos = cursor_pos;
flag = ibusimcontext->preedit_visible != visible;
ibusimcontext->preedit_visible = visible;
if (ibusimcontext->preedit_visible) {
if (flag) {
/* invisible => visible */
g_signal_emit (ibusimcontext, _signal_preedit_start_id, 0);
}
g_signal_emit (ibusimcontext, _signal_preedit_changed_id, 0);
}
else {
if (flag) {
/* visible => invisible */
g_signal_emit (ibusimcontext, _signal_preedit_changed_id, 0);
g_signal_emit (ibusimcontext, _signal_preedit_end_id, 0);
}
else {
/* still invisible */
/* do nothing */
}
}
}
static void
_ibus_context_show_preedit_text_cb (IBusInputContext *ibuscontext,
IBusIMContext *ibusimcontext)
{
IDEBUG ("%s", __FUNCTION__);
if (ibusimcontext->preedit_visible == TRUE)
return;