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wayland/text-input: Pass char based offset to ClutterInputFocus

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Wayland's text-input-v3 uses byte based offset for cursor and anchor of
surrounding text, but Clutter needs char based offset here. This commit
converts byte based offset to char based offset before passing them to
ClutterInputFocus.

Fixes <https://gitlab.gnome.org/GNOME/mutter/-/issues/3102>.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2712>
This commit is contained in:
Alynx Zhou 2023-10-23 14:32:21 +08:00 committed by Marge Bot
parent 27bdf0c577
commit 33088d59db
1 changed files with 19 additions and 5 deletions
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24
src/wayland/meta-wayland-text-input.c
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@ -122,12 +122,18 @@ static void
meta_wayland_text_input_focus_request_surrounding (ClutterInputFocus *focus)
{
MetaWaylandTextInput *text_input;
long cursor, anchor;
/* Clutter uses char offsets but text-input-v3 uses byte offsets. */
text_input = META_WAYLAND_TEXT_INPUT_FOCUS (focus)->text_input;
cursor = g_utf8_strlen (text_input->surrounding.text,
text_input->surrounding.cursor);
anchor = g_utf8_strlen (text_input->surrounding.text,
text_input->surrounding.anchor);
clutter_input_focus_set_surrounding (focus,
text_input->surrounding.text,
text_input->surrounding.cursor,
text_input->surrounding.anchor);
text_input->surrounding.text,
cursor,
anchor);
}
static uint32_t
@ -683,16 +689,24 @@ text_input_commit_state (struct wl_client *client,
if (text_input->pending_state & META_WAYLAND_PENDING_STATE_SURROUNDING_TEXT)
{
long cursor, anchor;
/* Save the surrounding text for `delete_surrounding_text`. */
g_free (text_input->surrounding.text);
text_input->surrounding.text = g_steal_pointer (&text_input->pending_surrounding.text);
text_input->surrounding.cursor = text_input->pending_surrounding.cursor;
text_input->surrounding.anchor = text_input->pending_surrounding.anchor;
/* Pass the surrounding text to Clutter to handle it with input method. */
/* Clutter uses char offsets but text-input-v3 uses byte offsets. */
cursor = g_utf8_strlen (text_input->surrounding.text,
text_input->surrounding.cursor);
anchor = g_utf8_strlen (text_input->surrounding.text,
text_input->surrounding.anchor);
clutter_input_focus_set_surrounding (text_input->input_focus,
text_input->surrounding.text,
text_input->surrounding.cursor,
text_input->surrounding.anchor);
cursor,
anchor);
}
if (text_input->pending_state & META_WAYLAND_PENDING_STATE_INPUT_RECT)