static gunichar
lx_tn_engine_get_prev_surrounding_char (LxTNEngine *lx_tn_engine,
IBusEngine *ibus_engine)
{
if (is_client_support_surrounding (ibus_engine))
{
IBusText *surrounding;
guint cursor_pos;
guint anchor_pos;
gunichar *u_surrounding;
gunichar ret = 0;
ibus_engine_get_surrounding_text (ibus_engine,
&surrounding, &cursor_pos, &anchor_pos);
u_surrounding = g_utf8_to_ucs4 (ibus_text_get_text (surrounding), -1,
NULL, NULL, NULL);
if (u_surrounding)
{
ret = (cursor_pos > 0) ? u_surrounding[cursor_pos - 1] : 0;
g_free (u_surrounding);
}
return ret;
}
return 0;
}
static gboolean
lx_tn_engine_convert_seq (LxTNEngine *lx_tn_engine,
IBusEngine *ibus_engine,
gunichar input_char)
{
if (is_client_support_surrounding (ibus_engine))
{
IBusText *surrounding;
guint cursor_pos;
guint anchor_pos;
LxTNConv conv;
ibus_engine_get_surrounding_text (ibus_engine,
&surrounding, &cursor_pos, &anchor_pos);
if (lx_tn_im_conversion (ibus_text_get_text (surrounding),
cursor_pos, anchor_pos, input_char, &conv))
{
IBusText *text;
ibus_engine_delete_surrounding_text (ibus_engine,
conv.del_offset,
-conv.del_offset);
text = ibus_text_new_from_static_string (conv.commit_text);
ibus_engine_commit_text (ibus_engine, text);
return TRUE;
}
}
return FALSE;
}
static void
ibus_hangul_engine_enable (IBusEngine *engine)
{
parent_class->enable (engine);
ibus_engine_get_surrounding_text (engine, NULL, NULL, NULL);
}
static void
FcitxThaiGetPrevCell(FcitxThai* thai, struct thcell_t* res)
{
th_init_cell(res);
if (is_client_support_surrounding(IBUS_ENGINE(libthai_engine))) {
IBusText* surrounding;
guint cursor_pos;
guint anchor_pos;
const gchar* s;
gchar* tis_text = NULL;
ibus_engine_get_surrounding_text(IBUS_ENGINE(libthai_engine),
&surrounding, &cursor_pos, &anchor_pos);
s = ibus_text_get_text(surrounding);
cursor_pos = g_utf8_offset_to_pointer(s, cursor_pos) - s;
while (*s) {
const gchar* t;
tis_text = g_convert(s, cursor_pos, "TIS-620", "UTF-8",
NULL, NULL, NULL);
if (tis_text)
break;
t = g_utf8_next_char(s);
cursor_pos -= (t - s);
s = t;
}
if (tis_text) {
gint char_index;
char_index = g_utf8_pointer_to_offset(s, s + cursor_pos);
th_prev_cell((thchar_t*) tis_text, char_index, res, TRUE);
g_free(tis_text);
}
} else {
/* retrieve from the fallback buffer */
th_prev_cell(libthai_engine->char_buff, libthai_engine->buff_tail,
res, TRUE);
}
}
static void
ibus_m17n_engine_callback (MInputContext *context,
MSymbol command)
{
IBusM17NEngine *m17n = NULL;
m17n = context->arg;
g_return_if_fail (m17n != NULL);
/* the callback may be called in minput_create_ic, in the time
* m17n->context has not be assigned, so need assign it. */
if (m17n->context == NULL) {
m17n->context = context;
}
if (command == Minput_preedit_start) {
ibus_engine_hide_preedit_text ((IBusEngine *)m17n);
}
else if (command == Minput_preedit_draw) {
ibus_m17n_engine_update_preedit (m17n);
}
else if (command == Minput_preedit_done) {
ibus_engine_hide_preedit_text ((IBusEngine *)m17n);
}
else if (command == Minput_status_start) {
ibus_engine_hide_preedit_text ((IBusEngine *)m17n);
}
else if (command == Minput_status_draw) {
gchar *status;
status = ibus_m17n_mtext_to_utf8 (m17n->context->status);
if (status && strlen (status)) {
IBusText *text;
text = ibus_text_new_from_string (status);
ibus_property_set_label (m17n->status_prop, text);
ibus_property_set_visible (m17n->status_prop, TRUE);
}
else {
ibus_property_set_label (m17n->status_prop, NULL);
ibus_property_set_visible (m17n->status_prop, FALSE);
}
ibus_engine_update_property ((IBusEngine *)m17n, m17n->status_prop);
g_free (status);
}
else if (command == Minput_status_done) {
}
else if (command == Minput_candidates_start) {
ibus_engine_hide_lookup_table ((IBusEngine *) m17n);
ibus_engine_hide_auxiliary_text ((IBusEngine *) m17n);
}
else if (command == Minput_candidates_draw) {
ibus_m17n_engine_update_lookup_table (m17n);
}
else if (command == Minput_candidates_done) {
ibus_engine_hide_lookup_table ((IBusEngine *) m17n);
ibus_engine_hide_auxiliary_text ((IBusEngine *) m17n);
}
else if (command == Minput_set_spot) {
}
else if (command == Minput_toggle) {
}
else if (command == Minput_reset) {
}
/* ibus_engine_get_surrounding_text is only available in the current
git master (1.3.99+) */
#ifdef HAVE_IBUS_ENGINE_GET_SURROUNDING_TEXT
else if (command == Minput_get_surrounding_text &&
(((IBusEngine *) m17n)->client_capabilities &
IBUS_CAP_SURROUNDING_TEXT) != 0) {
IBusText *text;
guint cursor_pos, nchars, nbytes;
MText *mt, *surround;
int len, pos;
ibus_engine_get_surrounding_text ((IBusEngine *) m17n,
&text,
&cursor_pos);
nchars = ibus_text_get_length (text);
nbytes = g_utf8_offset_to_pointer (text->text, nchars) - text->text;
mt = mconv_decode_buffer (Mcoding_utf_8, text->text, nbytes);
g_object_unref (text);
len = (long) mplist_value (m17n->context->plist);
if (len < 0) {
pos = cursor_pos + len;
if (pos < 0)
pos = 0;
surround = mtext_duplicate (mt, pos, cursor_pos);
}
else if (len > 0) {
pos = cursor_pos + len;
if (pos > nchars)
pos = nchars;
surround = mtext_duplicate (mt, cursor_pos, pos);
}
else {
surround = mtext ();
}
m17n_object_unref (mt);
mplist_set (m17n->context->plist, Mtext, surround);
m17n_object_unref (surround);
}
#endif /* !HAVE_IBUS_ENGINE_GET_SURROUNDING_TEXT */
else if (command == Minput_delete_surrounding_text &&
(((IBusEngine *) m17n)->client_capabilities &
IBUS_CAP_SURROUNDING_TEXT) != 0) {
int len;
len = (long) mplist_value (m17n->context->plist);
if (len < 0)
ibus_engine_delete_surrounding_text ((IBusEngine *) m17n,
len, -len);
else if (len > 0)
ibus_engine_delete_surrounding_text ((IBusEngine *) m17n,
0, len);
}
}
static void
ibus_hangul_engine_update_hanja_list (IBusHangulEngine *hangul)
{
gchar* hanja_key;
gchar* preedit_utf8;
const ucschar* hic_preedit;
UString* preedit;
int lookup_method;
IBusText* ibus_text = NULL;
guint cursor_pos = 0;
guint anchor_pos = 0;
if (hangul->hanja_list != NULL) {
hanja_list_delete (hangul->hanja_list);
hangul->hanja_list = NULL;
}
hic_preedit = hangul_ic_get_preedit_string (hangul->context);
hanja_key = NULL;
lookup_method = LOOKUP_METHOD_PREFIX;
preedit = ustring_dup (hangul->preedit);
ustring_append_ucs4 (preedit, hic_preedit, -1);
if (ustring_length(preedit) > 0) {
preedit_utf8 = ustring_to_utf8 (preedit, -1);
if (word_commit || hangul->hanja_mode) {
hanja_key = preedit_utf8;
lookup_method = LOOKUP_METHOD_PREFIX;
} else {
gchar* substr;
ibus_engine_get_surrounding_text ((IBusEngine *)hangul, &ibus_text,
&cursor_pos, &anchor_pos);
substr = h_ibus_text_get_substring (ibus_text,
cursor_pos - 64, cursor_pos);
if (substr != NULL) {
hanja_key = g_strconcat (substr, preedit_utf8, NULL);
g_free (preedit_utf8);
} else {
hanja_key = preedit_utf8;
}
lookup_method = LOOKUP_METHOD_SUFFIX;
}
} else {
ibus_engine_get_surrounding_text ((IBusEngine *)hangul, &ibus_text,
&cursor_pos, &anchor_pos);
if (cursor_pos != anchor_pos) {
// If we have selection in surrounding text, we use that.
hanja_key = h_ibus_text_get_substring (ibus_text,
cursor_pos, anchor_pos);
lookup_method = LOOKUP_METHOD_EXACT;
} else {
hanja_key = h_ibus_text_get_substring (ibus_text,
cursor_pos - 64, cursor_pos);
lookup_method = LOOKUP_METHOD_SUFFIX;
}
}
if (hanja_key != NULL) {
hangul->hanja_list = ibus_hangul_engine_lookup_hanja_table (hanja_key,
lookup_method);
hangul->last_lookup_method = lookup_method;
g_free (hanja_key);
}
ustring_delete (preedit);
if (ibus_text != NULL)
g_object_unref (ibus_text);
}
