static void
input_method_context_reset(void *data,
struct input_method_context *context)
{
struct virtual_keyboard *keyboard = data;
fprintf(stderr, "Reset pre-edit buffer\n");
if (strlen(keyboard->preedit_string)) {
input_method_context_preedit_string(context,
"",
0);
free(keyboard->preedit_string);
keyboard->preedit_string = strdup("");
}
}
static void
simple_im_key_handler(struct simple_im *keyboard,
uint32_t serial, uint32_t time, uint32_t key, uint32_t sym,
enum wl_keyboard_key_state state)
{
struct input_method_context *context = keyboard->context;
char text[64];
if (sym == XKB_KEY_Multi_key &&
state == WL_KEYBOARD_KEY_STATE_RELEASED &&
keyboard->compose_state == state_normal) {
keyboard->compose_state = state_compose;
memset(&keyboard->compose_seq, 0, sizeof(struct compose_seq));
return;
}
if (keyboard->compose_state == state_compose) {
uint32_t i = 0;
struct compose_seq *cs;
if (state == WL_KEYBOARD_KEY_STATE_PRESSED)
return;
for (i = 0; i < sizeof(ignore_keys_on_compose) / sizeof(ignore_keys_on_compose[0]); i++) {
if (sym == ignore_keys_on_compose[i]) {
input_method_context_key(context, serial, time, key, state);
return;
}
}
for (i = 0; keyboard->compose_seq.keys[i] != 0; i++);
keyboard->compose_seq.keys[i] = sym;
cs = bsearch (&keyboard->compose_seq, compose_seqs,
sizeof(compose_seqs) / sizeof(compose_seqs[0]),
sizeof(compose_seqs[0]), compare_compose_keys);
if (cs) {
if (cs->keys[i + 1] == 0) {
input_method_context_preedit_cursor(keyboard->context,
keyboard->serial,
0);
input_method_context_preedit_string(keyboard->context,
keyboard->serial,
"", "");
input_method_context_cursor_position(keyboard->context,
keyboard->serial,
0, 0);
input_method_context_commit_string(keyboard->context,
keyboard->serial,
cs->text);
keyboard->compose_state = state_normal;
} else {
uint32_t j = 0, idx = 0;
for (; j <= i; j++) {
idx += xkb_keysym_to_utf8(cs->keys[j], text + idx, sizeof(text) - idx);
}
input_method_context_preedit_cursor(keyboard->context,
keyboard->serial,
strlen(text));
input_method_context_preedit_string(keyboard->context,
keyboard->serial,
text,
text);
}
} else {
uint32_t j = 0, idx = 0;
for (; j <= i; j++) {
idx += xkb_keysym_to_utf8(keyboard->compose_seq.keys[j], text + idx, sizeof(text) - idx);
}
input_method_context_preedit_cursor(keyboard->context,
keyboard->serial,
0);
input_method_context_preedit_string(keyboard->context,
keyboard->serial,
"", "");
input_method_context_cursor_position(keyboard->context,
keyboard->serial,
0, 0);
input_method_context_commit_string(keyboard->context,
keyboard->serial,
text);
keyboard->compose_state = state_normal;
}
return;
}
if (xkb_keysym_to_utf8(sym, text, sizeof(text)) <= 0) {
input_method_context_key(context, serial, time, key, state);
return;
}
if (state == WL_KEYBOARD_KEY_STATE_PRESSED)
return;
input_method_context_cursor_position(keyboard->context,
keyboard->serial,
0, 0);
input_method_context_commit_string(keyboard->context,
keyboard->serial,
text);
}
static void
keyboard_handle_key(struct keyboard *keyboard, const struct key *key)
{
const char *label = keyboard->state == keyboardstate_default ? key->label : key->alt;
switch (key->key_type) {
case keytype_default:
keyboard->keyboard->preedit_string = strcat(keyboard->keyboard->preedit_string,
label);
input_method_context_preedit_string(keyboard->keyboard->context,
keyboard->keyboard->preedit_string,
strlen(keyboard->keyboard->preedit_string));
break;
case keytype_backspace:
if (strlen(keyboard->keyboard->preedit_string) == 0) {
input_method_context_delete_surrounding_text(keyboard->keyboard->context,
-1, 1);
} else {
keyboard->keyboard->preedit_string[strlen(keyboard->keyboard->preedit_string) - 1] = '\0';
input_method_context_preedit_string(keyboard->keyboard->context,
keyboard->keyboard->preedit_string,
strlen(keyboard->keyboard->preedit_string));
}
break;
case keytype_enter:
input_method_context_key(keyboard->keyboard->context,
XKB_KEY_KP_Enter, WL_KEYBOARD_KEY_STATE_PRESSED);
break;
case keytype_space:
keyboard->keyboard->preedit_string = strcat(keyboard->keyboard->preedit_string,
" ");
input_method_context_preedit_string(keyboard->keyboard->context,
"",
0);
input_method_context_commit_string(keyboard->keyboard->context,
keyboard->keyboard->preedit_string,
strlen(keyboard->keyboard->preedit_string));
free(keyboard->keyboard->preedit_string);
keyboard->keyboard->preedit_string = strdup("");
break;
case keytype_switch:
if (keyboard->state == keyboardstate_default)
keyboard->state = keyboardstate_uppercase;
else
keyboard->state = keyboardstate_default;
break;
case keytype_symbols:
break;
case keytype_tab:
input_method_context_key(keyboard->keyboard->context,
XKB_KEY_Tab, WL_KEYBOARD_KEY_STATE_PRESSED);
break;
case keytype_arrow_up:
input_method_context_key(keyboard->keyboard->context,
XKB_KEY_Up, WL_KEYBOARD_KEY_STATE_PRESSED);
break;
case keytype_arrow_left:
input_method_context_key(keyboard->keyboard->context,
XKB_KEY_Left, WL_KEYBOARD_KEY_STATE_PRESSED);
break;
case keytype_arrow_right:
input_method_context_key(keyboard->keyboard->context,
XKB_KEY_Right, WL_KEYBOARD_KEY_STATE_PRESSED);
break;
case keytype_arrow_down:
input_method_context_key(keyboard->keyboard->context,
XKB_KEY_Down, WL_KEYBOARD_KEY_STATE_PRESSED);
break;
}
}