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engine.c
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engine.c
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/* vim:set et sts=4: */
/* ibus-hangul - The Hangul Engine For IBus
* Copyright (C) 2008-2009 Peng Huang <shawn.p.huang@gmail.com>
* Copyright (C) 2009-2011 Choe Hwanjin <choe.hwanjin@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; 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 <stdio.h>
#include <ibus.h>
#include <gio/gio.h>
#include <hangul.h>
#include <string.h>
#include <ctype.h>
#include "i18n.h"
#include "engine.h"
#include "ustring.h"
typedef struct _IBusHangulEngine IBusHangulEngine;
typedef struct _IBusHangulEngineClass IBusHangulEngineClass;
typedef struct _HotkeyList HotkeyList;
enum {
INPUT_MODE_HANGUL,
INPUT_MODE_LATIN,
INPUT_MODE_COUNT,
};
/**
* ibus-hangul supports 3 preedit modes.
*/
typedef enum {
/**
* @brief zero length preedit mode
* An option to use zero length preedit text.
* ibus-hangul will utilize surrounding text feature to draw "composing text".
* So the "composing text" will not be shown in preedit style but normal text.
*/
PREEDIT_MODE_NONE,
/**
* @brief syllable preedit mode
* An option to use syllable length preedit text.
* This option utilizes preedit text feature.
*/
PREEDIT_MODE_SYLLABLE,
/**
* @brief word preedit mode
* An option to use word length preedit text.
*/
PREEDIT_MODE_WORD,
} IBusHangulPreeditMode;
struct _IBusHangulEngine {
IBusEngineSimple parent;
/* members */
/* unique context id */
guint id;
HangulInputContext *context;
UString* preedit;
/* Every instance's preedit_mode may be different from global settings.
* So we need a value for each instance. */
IBusHangulPreeditMode preedit_mode;
int input_mode;
unsigned int input_purpose;
gboolean hanja_mode;
HanjaList* hanja_list;
int last_lookup_method;
guint caps;
IBusLookupTable *table;
IBusProperty *prop_hangul_mode;
IBusProperty *prop_hanja_mode;
IBusPropList *prop_list;
IBusText *input_mode_symbols[INPUT_MODE_COUNT];
};
struct _IBusHangulEngineClass {
IBusEngineSimpleClass parent;
};
struct KeyEvent {
guint keyval;
guint modifiers;
};
struct _HotkeyList {
guint all_modifiers;
GArray *keys;
};
enum {
LOOKUP_METHOD_EXACT,
LOOKUP_METHOD_PREFIX,
LOOKUP_METHOD_SUFFIX,
};
/* functions prototype */
static void ibus_hangul_engine_class_init
(IBusHangulEngineClass *klass);
static void ibus_hangul_engine_init (IBusHangulEngine *hangul);
static GObject*
ibus_hangul_engine_constructor
(GType type,
guint n_construct_params,
GObjectConstructParam *construct_params);
static void ibus_hangul_engine_destroy (IBusHangulEngine *hangul);
static gboolean
ibus_hangul_engine_process_key_event
(IBusEngine *engine,
guint keyval,
guint keycode,
guint modifiers);
static void ibus_hangul_engine_focus_in (IBusEngine *engine);
static void ibus_hangul_engine_focus_out (IBusEngine *engine);
static void ibus_hangul_engine_reset (IBusEngine *engine);
static void ibus_hangul_engine_enable (IBusEngine *engine);
static void ibus_hangul_engine_disable (IBusEngine *engine);
#if 0
static void ibus_engine_set_cursor_location (IBusEngine *engine,
gint x,
gint y,
gint w,
gint h);
#endif
static void ibus_hangul_engine_set_capabilities
(IBusEngine *engine,
guint caps);
static void ibus_hangul_engine_page_up (IBusEngine *engine);
static void ibus_hangul_engine_page_down (IBusEngine *engine);
static void ibus_hangul_engine_cursor_up (IBusEngine *engine);
static void ibus_hangul_engine_cursor_down (IBusEngine *engine);
static void ibus_hangul_engine_property_activate
(IBusEngine *engine,
const gchar *prop_name,
guint prop_state);
#if 0
static void ibus_hangul_engine_property_show
(IBusEngine *engine,
const gchar *prop_name);
static void ibus_hangul_engine_property_hide
(IBusEngine *engine,
const gchar *prop_name);
#endif
static void ibus_hangul_engine_candidate_clicked
(IBusEngine *engine,
guint index,
guint button,
guint state);
static void ibus_hangul_engine_set_content_type
(IBusEngine *engine,
guint purpose,
guint hints);
static void ibus_hangul_engine_flush (IBusHangulEngine *hangul);
static void ibus_hangul_engine_clear_preedit_text
(IBusHangulEngine *hangul);
static void ibus_hangul_engine_update_preedit_text
(IBusHangulEngine *hangul);
static void ibus_hangul_engine_process_commit_and_edit
(IBusHangulEngine *hangul);
static void ibus_hangul_engine_update_lookup_table
(IBusHangulEngine *hangul);
static gboolean ibus_hangul_engine_has_preedit
(IBusHangulEngine *hangul);
static void ibus_hangul_engine_switch_input_mode
(IBusHangulEngine *hangul);
static void ibus_hangul_engine_set_input_mode
(IBusHangulEngine *hangul,
int input_mode);
static IBusText*
ibus_hangul_engine_get_input_mode_symbol
(IBusHangulEngine *hangul,
int input_mode);
static bool ibus_hangul_engine_on_transition
(HangulInputContext *hic,
ucschar c,
const ucschar *preedit,
void *data);
static void settings_changed (GSettings *settings,
const gchar *key,
gpointer user_data);
static void lookup_table_set_visible (IBusLookupTable *table,
gboolean flag);
static gboolean lookup_table_is_visible
(IBusLookupTable *table);
static gboolean key_event_list_match (GArray *list,
guint keyval,
guint modifiers);
static void hotkey_list_init (HotkeyList *list);
static void hotkey_list_fini (HotkeyList *list);
static void hotkey_list_set_from_string (HotkeyList *list,
const char *str);
static void hotkey_list_append (HotkeyList *list,
guint keyval,
guint modifiers);
static gboolean hotkey_list_match (HotkeyList *list,
guint keyval,
guint modifiers);
static gboolean hotkey_list_has_modifier (HotkeyList *list,
guint keyval);
static glong ucschar_strlen (const ucschar* str);
static gint ibus_version[3] = { IBUS_MAJOR_VERSION, IBUS_MINOR_VERSION, IBUS_MICRO_VERSION };
static IBusEngineSimpleClass *parent_class = NULL;
static guint last_context_id = 0;
static HanjaTable *hanja_table = NULL;
static HanjaTable *symbol_table = NULL;
static GSettings *settings_hangul = NULL;
static GSettings *settings_panel = NULL;
static GString *hangul_keyboard = NULL;
static HotkeyList hanja_keys;
static HotkeyList switch_keys;
static HotkeyList on_keys;
static HotkeyList off_keys;
static int lookup_table_orientation = 0;
static IBusKeymap *keymap = NULL;
static gboolean word_commit = FALSE;
static gboolean auto_reorder = TRUE;
static gboolean disable_latin_mode = FALSE;
static int initial_input_mode = INPUT_MODE_LATIN;
/**
* whether to use event forwarding workaround
* See: https://github.com/libhangul/ibus-hangul/issues/42
*/
static gboolean use_event_forwarding = TRUE;
/**
* whether to use client commit
* See: https://github.com/libhangul/ibus-hangul/pull/68
*/
static gboolean use_client_commit = FALSE;
/**
* global preedit mode
* This option may have a value, one of the IBusHangulPreeditMode.
* See: https://github.com/libhangul/ibus-hangul/issues/69
*/
static IBusHangulPreeditMode global_preedit_mode = PREEDIT_MODE_SYLLABLE;
static glong
ucschar_strlen (const ucschar* str)
{
const ucschar* p = str;
while (*p != 0)
p++;
return p - str;
}
static void
check_ibus_version ()
{
gboolean retval;
gchar* standard_output = NULL;
const gchar* version_str;
gchar** version_str_array;
gint version[3];
retval = g_spawn_command_line_sync ("ibus version", &standard_output,
NULL, NULL, NULL);
if (!retval)
goto fail;
version_str = strpbrk (standard_output, " \t");
if (version_str == NULL) {
g_free (standard_output);
goto fail;
}
while (*version_str == ' ' || *version_str == '\t')
version_str++;
version_str_array = g_strsplit (version_str, ".", 3);
g_free (standard_output);
if (version_str_array == NULL) {
goto fail;
}
version[0] = 0;
version[1] = 0;
version[2] = 0;
for (gint i = 0; version_str_array[i] != NULL; ++i) {
version[i] = g_ascii_strtoll (version_str_array[i], NULL, 10);
}
g_strfreev (version_str_array);
if (version[0] == 0 && version[1] == 0 && version[2] == 0) {
goto fail;
}
ibus_version[0] = version[0];
ibus_version[1] = version[1];
ibus_version[2] = version[2];
g_debug ("ibus version detected: %d.%d.%d",
ibus_version[0], ibus_version[1], ibus_version[2]);
exit(0);
return;
fail:
g_debug ("ibus version detection failed: use default value: %d.%d.%d",
ibus_version[0], ibus_version[1], ibus_version[2]);
exit(-1);
}
static gboolean
ibus_hangul_check_ibus_version (gint required_major,
gint required_minor,
gint required_micro)
{
gint major = ibus_version[0];
gint minor = ibus_version[1];
gint micro = ibus_version[2];
return major > required_major ||
(major == required_major && minor > required_minor) ||
(major == required_major && minor == required_minor &&
micro >= required_micro);
}
static gboolean
check_client_commit ()
{
gboolean client_commit = FALSE;
client_commit = ibus_hangul_check_ibus_version (1, 5, 20);
g_debug ("client_commit: %d", client_commit);
return client_commit;
}
GType
ibus_hangul_engine_get_type (void)
{
static GType type = 0;
static const GTypeInfo type_info = {
sizeof (IBusHangulEngineClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) ibus_hangul_engine_class_init,
NULL,
NULL,
sizeof (IBusHangulEngine),
0,
(GInstanceInitFunc) ibus_hangul_engine_init,
};
if (type == 0) {
type = g_type_register_static (IBUS_TYPE_ENGINE_SIMPLE,
"IBusHangulEngine",
&type_info,
(GTypeFlags) 0);
}
return type;
}
void
ibus_hangul_init (IBusBus *bus)
{
GVariant* value = NULL;
last_context_id = 0;
hanja_table = hanja_table_load (NULL);
symbol_table = hanja_table_load (IBUSHANGUL_DATADIR "/data/symbol.txt");
check_ibus_version ();
settings_hangul = g_settings_new ("org.freedesktop.ibus.engine.hangul");
settings_panel = g_settings_new ("org.freedesktop.ibus.panel");
hangul_keyboard = g_string_new_len (NULL, 8);
value = g_settings_get_value (settings_hangul, "hangul-keyboard");
if (value != NULL) {
const gchar* str = g_variant_get_string (value, NULL);
g_string_assign (hangul_keyboard, str);
g_clear_pointer (&value, g_variant_unref);
}
hotkey_list_init(&switch_keys);
value = g_settings_get_value (settings_hangul, "switch-keys");
if (value != NULL) {
const gchar* str = g_variant_get_string (value, NULL);
hotkey_list_set_from_string(&switch_keys, str);
g_clear_pointer (&value, g_variant_unref);
} else {
hotkey_list_append(&switch_keys, IBUS_Hangul, 0);
hotkey_list_append(&switch_keys, IBUS_space, IBUS_SHIFT_MASK);
}
hotkey_list_init(&hanja_keys);
value = g_settings_get_value (settings_hangul, "hanja-keys");
if (value != NULL) {
const gchar* str = g_variant_get_string (value, NULL);
hotkey_list_set_from_string(&hanja_keys, str);
g_clear_pointer (&value, g_variant_unref);
} else {
hotkey_list_append(&hanja_keys, IBUS_Hangul_Hanja, 0);
hotkey_list_append(&hanja_keys, IBUS_F9, 0);
}
hotkey_list_init (&on_keys);
value = g_settings_get_value (settings_hangul, "on-keys");
if (value != NULL) {
const gchar* str = g_variant_get_string (value, NULL);
hotkey_list_set_from_string (&on_keys, str);
g_clear_pointer (&value, g_variant_unref);
}
hotkey_list_init (&off_keys);
value = g_settings_get_value (settings_hangul, "off-keys");
if (value != NULL) {
const gchar* str = g_variant_get_string (value, NULL);
hotkey_list_set_from_string (&off_keys, str);
g_clear_pointer (&value, g_variant_unref);
}
value = g_settings_get_value (settings_hangul, "word-commit");
if (value != NULL) {
word_commit = g_variant_get_boolean (value);
g_clear_pointer (&value, g_variant_unref);
}
value = g_settings_get_value (settings_hangul, "auto-reorder");
if (value != NULL) {
auto_reorder = g_variant_get_boolean (value);
g_clear_pointer (&value, g_variant_unref);
}
value = g_settings_get_value (settings_hangul, "disable-latin-mode");
if (value != NULL) {
disable_latin_mode = g_variant_get_boolean (value);
g_clear_pointer (&value, g_variant_unref);
}
value = g_settings_get_value (settings_hangul, "initial-input-mode");
if (value != NULL) {
const gchar* str = g_variant_get_string (value, NULL);
if (strcmp(str, "latin") == 0) {
initial_input_mode = INPUT_MODE_LATIN;
} else if (strcmp(str, "hangul") == 0) {
initial_input_mode = INPUT_MODE_HANGUL;
}
g_clear_pointer (&value, g_variant_unref);
}
value = g_settings_get_value (settings_hangul, "use-event-forwarding");
if (value != NULL) {
use_event_forwarding = g_variant_get_boolean (value);
g_clear_pointer (&value, g_variant_unref);
}
value = g_settings_get_value (settings_hangul, "preedit-mode");
if (value != NULL) {
const gchar* str = g_variant_get_string (value, NULL);
if (strcmp(str, "none") == 0) {
global_preedit_mode = PREEDIT_MODE_NONE;
} else if (strcmp(str, "word") == 0) {
global_preedit_mode = PREEDIT_MODE_WORD;
} else {
global_preedit_mode = PREEDIT_MODE_SYLLABLE;
}
g_clear_pointer (&value, g_variant_unref);
}
value = g_settings_get_value (settings_panel, "lookup-table-orientation");
if (value != NULL) {
lookup_table_orientation = g_variant_get_int32(value);
g_clear_pointer (&value, g_variant_unref);
}
keymap = ibus_keymap_get("us");
use_client_commit = check_client_commit ();
g_debug ("init");
}
void
ibus_hangul_exit (void)
{
g_debug ("exit");
if (keymap != NULL) {
g_object_unref(keymap);
keymap = NULL;
}
hotkey_list_fini (&switch_keys);
hotkey_list_fini (&hanja_keys);
hotkey_list_fini (&on_keys);
hotkey_list_fini (&off_keys);
hanja_table_delete (hanja_table);
hanja_table = NULL;
hanja_table_delete (symbol_table);
symbol_table = NULL;
g_clear_object (&settings_hangul);
g_clear_object (&settings_panel);
g_string_free (hangul_keyboard, TRUE);
hangul_keyboard = NULL;
}
/*
static void
ibus_hangul_engine_set_surrounding_text (IBusEngine *engine,
IBusText *text,
guint cursor_index,
guint anchor_pos)
{
g_debug ("set_surrounding_text: %s %d %d",
ibus_text_get_text (text), cursor_index, anchor_pos);
}
*/
static void
ibus_hangul_engine_class_init (IBusHangulEngineClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
IBusObjectClass *ibus_object_class = IBUS_OBJECT_CLASS (klass);
IBusEngineClass *engine_class = IBUS_ENGINE_CLASS (klass);
parent_class = (IBusEngineSimpleClass *) g_type_class_peek_parent (klass);
object_class->constructor = ibus_hangul_engine_constructor;
ibus_object_class->destroy = (IBusObjectDestroyFunc) ibus_hangul_engine_destroy;
engine_class->process_key_event = ibus_hangul_engine_process_key_event;
engine_class->reset = ibus_hangul_engine_reset;
engine_class->enable = ibus_hangul_engine_enable;
engine_class->disable = ibus_hangul_engine_disable;
engine_class->focus_in = ibus_hangul_engine_focus_in;
engine_class->focus_out = ibus_hangul_engine_focus_out;
engine_class->set_capabilities = ibus_hangul_engine_set_capabilities;
engine_class->page_up = ibus_hangul_engine_page_up;
engine_class->page_down = ibus_hangul_engine_page_down;
engine_class->cursor_up = ibus_hangul_engine_cursor_up;
engine_class->cursor_down = ibus_hangul_engine_cursor_down;
engine_class->property_activate = ibus_hangul_engine_property_activate;
engine_class->candidate_clicked = ibus_hangul_engine_candidate_clicked;
//engine_class->set_surrounding_text = ibus_hangul_engine_set_surrounding_text;
engine_class->set_content_type = ibus_hangul_engine_set_content_type;
}
static void
ibus_hangul_engine_init (IBusHangulEngine *hangul)
{
IBusProperty* prop;
IBusText* label;
IBusText* tooltip;
IBusText* symbol;
hangul->id = last_context_id;
++last_context_id;
hangul->context = hangul_ic_new (hangul_keyboard->str);
hangul_ic_connect_callback (hangul->context, "transition",
ibus_hangul_engine_on_transition, hangul);
hangul->preedit = ustring_new();
hangul->preedit_mode = global_preedit_mode;
hangul->hanja_list = NULL;
hangul->input_mode = initial_input_mode;
hangul->input_purpose = IBUS_INPUT_PURPOSE_FREE_FORM;
hangul->hanja_mode = FALSE;
hangul->last_lookup_method = LOOKUP_METHOD_PREFIX;
hangul->caps = 0;
if (disable_latin_mode) {
hangul->input_mode = INPUT_MODE_HANGUL;
}
hangul->prop_list = ibus_prop_list_new ();
g_object_ref_sink (hangul->prop_list);
label = ibus_text_new_from_string (_("Hangul mode"));
tooltip = ibus_text_new_from_string (_("Enable/Disable Hangul mode"));
prop = ibus_property_new ("InputMode",
PROP_TYPE_TOGGLE,
label,
NULL,
tooltip,
TRUE, TRUE, PROP_STATE_UNCHECKED, NULL);
symbol = ibus_hangul_engine_get_input_mode_symbol (hangul,
hangul->input_mode);
ibus_property_set_symbol(prop, symbol);
g_object_ref_sink (prop);
ibus_prop_list_append (hangul->prop_list, prop);
hangul->prop_hangul_mode = prop;
label = ibus_text_new_from_string (_("Hanja lock"));
tooltip = ibus_text_new_from_string (_("Enable/Disable Hanja mode"));
prop = ibus_property_new ("hanja_mode",
PROP_TYPE_TOGGLE,
label,
NULL,
tooltip,
TRUE, TRUE, PROP_STATE_UNCHECKED, NULL);
g_object_ref_sink (prop);
ibus_prop_list_append (hangul->prop_list, prop);
hangul->prop_hanja_mode = prop;
label = ibus_text_new_from_string (_("Setup"));
tooltip = ibus_text_new_from_string (_("Configure hangul engine"));
prop = ibus_property_new ("setup",
PROP_TYPE_NORMAL,
label,
"gtk-preferences",
tooltip,
TRUE, TRUE, PROP_STATE_UNCHECKED, NULL);
ibus_prop_list_append (hangul->prop_list, prop);
hangul->table = ibus_lookup_table_new (9, 0, TRUE, FALSE);
g_object_ref_sink (hangul->table);
g_signal_connect (settings_hangul, "changed",
G_CALLBACK (settings_changed), hangul);
g_signal_connect (settings_panel, "changed",
G_CALLBACK (settings_changed), hangul);
g_debug ("context new:%u", hangul->id);
}
static GObject*
ibus_hangul_engine_constructor (GType type,
guint n_construct_params,
GObjectConstructParam *construct_params)
{
IBusHangulEngine *hangul;
hangul = (IBusHangulEngine *) G_OBJECT_CLASS (parent_class)->constructor (type,
n_construct_params,
construct_params);
return (GObject *)hangul;
}
static void
ibus_hangul_engine_destroy (IBusHangulEngine *hangul)
{
int i;
IBusText **symbols;
g_debug ("context delete:%u", hangul->id);
if (hangul->prop_hangul_mode) {
g_object_unref (hangul->prop_hangul_mode);
hangul->prop_hangul_mode = NULL;
}
if (hangul->prop_hanja_mode) {
g_object_unref (hangul->prop_hanja_mode);
hangul->prop_hanja_mode = NULL;
}
if (hangul->prop_list) {
g_object_unref (hangul->prop_list);
hangul->prop_list = NULL;
}
if (hangul->preedit != NULL) {
ustring_delete (hangul->preedit);
hangul->preedit = NULL;
}
if (hangul->table) {
g_object_unref (hangul->table);
hangul->table = NULL;
}
if (hangul->context) {
hangul_ic_delete (hangul->context);
hangul->context = NULL;
}
symbols = hangul->input_mode_symbols;
for (i = 0; i < INPUT_MODE_COUNT; ++i) {
if (symbols[i] != NULL) {
g_object_unref(symbols[i]);
symbols[i] = NULL;
}
}
IBUS_OBJECT_CLASS (parent_class)->destroy ((IBusObject *)hangul);
}
/**
* @brief a function to check whether the caret has moved
*
* An ibus client should inform to the engine that the caret has moved
* by calling reset method. But many implementations don't follow this rule.
* So we need to check whether the caret pos is changed.
* If so, we will reset the context.
*
* Usually we don't need this function. Only when the preedit mode is
* PREEDIT_MODE_NONE, it is critical to have same surrounding text and
* internal cached preedit text.
*/
static void
ibus_hangul_engine_check_caret_pos_sanity (IBusHangulEngine *hangul)
{
size_t preedit_len = ustring_length (hangul->preedit);
if (preedit_len == 0)
return;
IBusText* ibus_text = NULL;
guint cursor_pos = 0;
guint anchor_pos = 0;
ibus_engine_get_surrounding_text ((IBusEngine *)hangul,
&ibus_text, &cursor_pos, &anchor_pos);
const gchar* text = ibus_text_get_text (ibus_text);
if (text == NULL || cursor_pos == 0)
return;
const gchar* text_on_cursor = g_utf8_offset_to_pointer (text, cursor_pos - 1);
gchar* preedit_utf8 = ustring_to_utf8 (hangul->preedit, -1);
if (preedit_utf8 == NULL) {
g_object_unref (ibus_text);
return;
}
size_t n = strlen(preedit_utf8);
// Ok, Just comparing text value is not perfect. But any other idea?
if (strncmp(preedit_utf8, text_on_cursor, n) != 0) {
// If the text_on_cursor is different from preedit cache, there's a possibility
// that the cursor was moved by the user. Then we need to reset the context.
hangul_ic_reset (hangul->context);
ustring_clear (hangul->preedit);
}
g_free (preedit_utf8);
g_object_unref (ibus_text);
}
static void
ibus_hangul_engine_update_preedit_mode (IBusHangulEngine *hangul)
{
if (global_preedit_mode == PREEDIT_MODE_NONE &&
!(hangul->caps & IBUS_CAP_SURROUNDING_TEXT)) {
// If an instance doesn't support surrounding text, ibus-hangul will change
// preedit mode of this instance to PREEDIT_MODE_SYLLABLE.
// Because without surrounding text feature, users cannot see "composing text".
// This is pretty inconvenient for korean users.
hangul->preedit_mode = PREEDIT_MODE_SYLLABLE;
} else {
hangul->preedit_mode = global_preedit_mode;
}
}
static void
ibus_hangul_engine_clear_preedit_text (IBusHangulEngine *hangul)
{
IBusText *text;
text = ibus_text_new_from_static_string ("");
ibus_engine_update_preedit_text ((IBusEngine *)hangul, text, 0, FALSE);
}
static void
ibus_hangul_engine_update_preedit_text (IBusHangulEngine *hangul)
{
const ucschar *hic_preedit;
IBusText *text;
UString *preedit;
gint preedit_len;
if (hangul->preedit_mode == PREEDIT_MODE_NONE) {
return;
}
// ibus-hangul's preedit string is made up of ibus context's
// internal preedit string and libhangul's preedit string.
// libhangul only supports one syllable preedit string.
// In order to make longer preedit string, ibus-hangul maintains
// internal preedit string.
hic_preedit = hangul_ic_get_preedit_string (hangul->context);
preedit = ustring_dup (hangul->preedit);
preedit_len = ustring_length(preedit);
ustring_append_ucs4 (preedit, hic_preedit, -1);
if (ustring_length(preedit) > 0) {
IBusPreeditFocusMode preedit_option = IBUS_ENGINE_PREEDIT_COMMIT;
if (hangul->hanja_list != NULL)
preedit_option = IBUS_ENGINE_PREEDIT_CLEAR;
text = ibus_text_new_from_ucs4 ((gunichar*)preedit->data);
// ibus-hangul's internal preedit string
ibus_text_append_attribute (text, IBUS_ATTR_TYPE_UNDERLINE,
IBUS_ATTR_UNDERLINE_SINGLE, 0, preedit_len);
// Preedit string from libhangul context.
// This is currently composing syllable.
ibus_text_append_attribute (text, IBUS_ATTR_TYPE_FOREGROUND,
0x00ffffff, preedit_len, -1);
ibus_text_append_attribute (text, IBUS_ATTR_TYPE_BACKGROUND,
0x00000000, preedit_len, -1);
ibus_engine_update_preedit_text_with_mode ((IBusEngine *)hangul,
text,
ibus_text_get_length (text),
TRUE,
preedit_option);
} else {
text = ibus_text_new_from_static_string ("");
ibus_engine_update_preedit_text ((IBusEngine *)hangul, text, 0, FALSE);
}
ustring_delete(preedit);
}
static void
ibus_hangul_engine_process_commit_and_edit (IBusHangulEngine *hangul)
{
// commit current commit_text + preedit_text
const ucschar *hic_commit_text = hangul_ic_get_commit_string (hangul->context);
const ucschar *hic_preedit_text = hangul_ic_get_preedit_string (hangul->context);
UString *commit_text = ustring_new ();
ustring_append_ucs4 (commit_text, hic_commit_text, -1);
ustring_append_ucs4 (commit_text, hic_preedit_text, -1);
// commit only when the final result is different from preedit text cache
if (ustring_compare (commit_text, hangul->preedit) != 0) {
IBusEngine *engine = (IBusEngine *)hangul;
// remove composing text
guint preedit_text_len = ustring_length (hangul->preedit);
ibus_engine_delete_surrounding_text (engine, -preedit_text_len, preedit_text_len);
const ucschar *s = ustring_begin (commit_text);
IBusText *text = ibus_text_new_from_ucs4 (s);
ibus_engine_commit_text (engine, text);
}
ustring_delete (commit_text);
// update preedit_text cache
ustring_clear (hangul->preedit);
ustring_append_ucs4 (hangul->preedit, hic_preedit_text, -1);
}
static void
ibus_hangul_engine_process_edit_and_commit (IBusHangulEngine *hangul)
{
IBusEngine *engine = (IBusEngine *)hangul;
const ucschar *hic_commit_text = hangul_ic_get_commit_string (hangul->context);
const ucschar *hic_preedit_text = hangul_ic_get_preedit_string (hangul->context);
if (hangul->preedit_mode == PREEDIT_MODE_WORD || hangul->hanja_mode) {
ustring_append_ucs4 (hangul->preedit, hic_commit_text, -1);
if (hic_preedit_text == NULL || hic_preedit_text[0] == 0) {
if (ustring_length (hangul->preedit) > 0) {
IBusText *text;
const ucschar* preedit_text;
/* clear preedit text before commit */
ibus_hangul_engine_clear_preedit_text (hangul);
preedit_text = ustring_begin (hangul->preedit);
text = ibus_text_new_from_ucs4 ((gunichar*)preedit_text);
ibus_engine_commit_text (engine, text);
ustring_clear (hangul->preedit);
}
}
} else {
if (hic_commit_text != NULL && hic_commit_text[0] != 0) {
IBusText *text;
/* clear preedit text before commit */
ibus_hangul_engine_clear_preedit_text (hangul);
text = ibus_text_new_from_ucs4 (hic_commit_text);
ibus_engine_commit_text (engine, text);
}
}
ibus_hangul_engine_update_preedit_text (hangul);
}
static void
ibus_hangul_engine_update_lookup_table_ui (IBusHangulEngine *hangul)
{
guint cursor_pos;
const char* comment;
IBusText* text;
// update aux text
cursor_pos = ibus_lookup_table_get_cursor_pos (hangul->table);
comment = hanja_list_get_nth_comment (hangul->hanja_list, cursor_pos);
text = ibus_text_new_from_string (comment);
ibus_engine_update_auxiliary_text ((IBusEngine *)hangul, text, TRUE);
// update lookup table
ibus_engine_update_lookup_table ((IBusEngine *)hangul, hangul->table, TRUE);
}
static void
ibus_hangul_engine_commit_current_candidate (IBusHangulEngine *hangul)
{
guint cursor_pos;
const char* key;
const char* value;
const ucschar* hic_preedit;
glong key_len;
glong hic_preedit_len;
glong preedit_len;
IBusText* text;
cursor_pos = ibus_lookup_table_get_cursor_pos (hangul->table);
key = hanja_list_get_nth_key (hangul->hanja_list, cursor_pos);
value = hanja_list_get_nth_value (hangul->hanja_list, cursor_pos);
hic_preedit = hangul_ic_get_preedit_string (hangul->context);
key_len = g_utf8_strlen(key, -1);
preedit_len = ustring_length(hangul->preedit);
hic_preedit_len = ucschar_strlen (hic_preedit);
if (hangul->last_lookup_method == LOOKUP_METHOD_PREFIX) {
if (preedit_len == 0 && hic_preedit_len == 0) {
/* remove surrounding_text */
if (key_len > 0) {
ibus_engine_delete_surrounding_text ((IBusEngine *)hangul,
-key_len , key_len);
}
} else {
/* remove ibus preedit text */
if (key_len > 0) {
glong n = MIN(key_len, preedit_len);
ustring_erase (hangul->preedit, 0, n);
key_len -= preedit_len;
}
/* remove hic preedit text */
if (key_len > 0) {
hangul_ic_reset (hangul->context);
key_len -= hic_preedit_len;
}
}
} else {
/* remove hic preedit text */
if (hic_preedit_len > 0) {
hangul_ic_reset (hangul->context);
if (hangul->preedit_mode == PREEDIT_MODE_NONE) {
if (preedit_len > hic_preedit_len) {
guint pos = preedit_len - hic_preedit_len;
ustring_erase (hangul->preedit, pos, hic_preedit_len);
} else {
ustring_clear (hangul->preedit);
}