static void
text_input_leave(void *data,
struct wl_text_input *text_input)
{
struct text_entry *entry = data;
text_entry_commit_and_reset(entry);
entry->active = 0;
wl_text_input_hide_input_panel(text_input);
widget_schedule_redraw(entry->widget);
}
static void
text_entry_set_cursor_position(struct text_entry *entry,
int32_t x, int32_t y)
{
int index, trailing;
const char *text;
text_entry_commit_and_reset(entry);
pango_layout_xy_to_index(entry->layout,
x * PANGO_SCALE, y * PANGO_SCALE,
&index, &trailing);
text = pango_layout_get_text(entry->layout);
entry->cursor = g_utf8_offset_to_pointer(text + index, trailing) - text;
text_entry_update_layout(entry);
widget_schedule_redraw(entry->widget);
text_entry_update(entry);
}
static void
text_entry_set_cursor_position(struct text_entry *entry,
int32_t x, int32_t y,
bool move_anchor)
{
int index, trailing;
const char *text;
uint32_t cursor;
pango_layout_xy_to_index(entry->layout,
x * PANGO_SCALE, y * PANGO_SCALE,
&index, &trailing);
text = pango_layout_get_text(entry->layout);
cursor = g_utf8_offset_to_pointer(text + index, trailing) - text;
if (move_anchor)
entry->anchor = cursor;
if (text_entry_has_preedit(entry)) {
text_entry_commit_and_reset(entry);
assert(!text_entry_has_preedit(entry));
}
if (entry->cursor == cursor)
return;
entry->cursor = cursor;
text_entry_update_layout(entry);
widget_schedule_redraw(entry->widget);
text_entry_update(entry);
}
static void
text_input_keysym(void *data,
struct wl_text_input *text_input,
uint32_t serial,
uint32_t time,
uint32_t key,
uint32_t state,
uint32_t modifiers)
{
struct text_entry *entry = data;
const char *state_label = "release";
const char *key_label = "Unknown";
const char *new_char;
if (state == WL_KEYBOARD_KEY_STATE_PRESSED) {
state_label = "pressed";
}
if (key == XKB_KEY_Left ||
key == XKB_KEY_Right) {
if (state != WL_KEYBOARD_KEY_STATE_RELEASED)
return;
if (key == XKB_KEY_Left)
new_char = utf8_prev_char(entry->text, entry->text + entry->cursor);
else
new_char = utf8_next_char(entry->text + entry->cursor);
if (new_char != NULL) {
entry->cursor = new_char - entry->text;
}
if (!(modifiers & entry->keysym.shift_mask))
entry->anchor = entry->cursor;
widget_schedule_redraw(entry->widget);
return;
}
if (key == XKB_KEY_BackSpace) {
const char *start, *end;
if (state != WL_KEYBOARD_KEY_STATE_RELEASED)
return;
text_entry_commit_and_reset(entry);
start = utf8_prev_char(entry->text, entry->text + entry->cursor);
end = utf8_next_char(start);
if (start == NULL)
return;
text_entry_delete_text(entry,
start - entry->text,
end - start);
return;
}
switch (key) {
case XKB_KEY_Tab:
key_label = "Tab";
break;
case XKB_KEY_KP_Enter:
case XKB_KEY_Return:
key_label = "Enter";
break;
}
fprintf(stderr, "%s key was %s.\n", key_label, state_label);
}
static void
key_handler(struct window *window,
struct input *input, uint32_t time,
uint32_t key, uint32_t sym, enum wl_keyboard_key_state state,
void *data)
{
struct editor *editor = data;
struct text_entry *entry;
const char *new_char;
char text[16];
if (!editor->active_entry)
return;
entry = editor->active_entry;
if (state != WL_KEYBOARD_KEY_STATE_PRESSED)
return;
switch (sym) {
case XKB_KEY_BackSpace:
text_entry_commit_and_reset(entry);
new_char = utf8_prev_char(entry->text, entry->text + entry->cursor);
if (new_char != NULL)
text_entry_delete_text(entry,
new_char - entry->text,
(entry->text + entry->cursor) - new_char);
break;
case XKB_KEY_Delete:
text_entry_commit_and_reset(entry);
new_char = utf8_next_char(entry->text + entry->cursor);
if (new_char != NULL)
text_entry_delete_text(entry,
entry->cursor,
new_char - (entry->text + entry->cursor));
break;
case XKB_KEY_Left:
text_entry_commit_and_reset(entry);
new_char = utf8_prev_char(entry->text, entry->text + entry->cursor);
if (new_char != NULL) {
entry->cursor = new_char - entry->text;
entry->anchor = entry->cursor;
widget_schedule_redraw(entry->widget);
}
break;
case XKB_KEY_Right:
text_entry_commit_and_reset(entry);
new_char = utf8_next_char(entry->text + entry->cursor);
if (new_char != NULL) {
entry->cursor = new_char - entry->text;
entry->anchor = entry->cursor;
widget_schedule_redraw(entry->widget);
}
break;
default:
if (xkb_keysym_to_utf8(sym, text, sizeof(text)) <= 0)
break;
text_entry_commit_and_reset(entry);
text_entry_insert_at_cursor(entry, text, 0, 0);
break;
}
widget_schedule_redraw(entry->widget);
}
