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wayland: Translate delete-surrounding properly to protocols

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IBusInputContext/ClutterInputFocus/GtkIMContext all go for offset+len
for their ::delete-surrounding signals, with offset being a signed int
(neg. to delete towards left of selection, pos. to delete towards right
of selection) and len being an unsigned int from the offset (and
presumably, skipping the current selection).

The text-input protocols however pass in this event two unsigned integers,
one being the length of text to delete towards the left of the selection,
and another the length of text to delete towards the right of the selection.

To translate properly these semantics, positive offsets shouldn't account
for before_length, and negative offset+len shouldn't account for after_length.
The offset/length approach may of course represent deletions that are
detached from the current cursor/selection, we simply delete the whole range
from the cursor/selection positions then.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/517
This commit is contained in:
Carlos Garnacho 2020-03-27 17:01:17 +01:00 committed by Carlos Garnacho
parent 2cfdbbd730
commit bb5ea0580f
2 changed files with 6 additions and 4 deletions
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5
src/wayland/meta-wayland-text-input-legacy.c
View File

@ -103,8 +103,9 @@ meta_wayland_text_input_focus_delete_surrounding (ClutterInputFocus *focus,
struct wl_resource *resource;
text_input = META_WAYLAND_GTK_TEXT_INPUT_FOCUS (focus)->text_input;
before_length = offset <= 0 ? -offset : offset;
after_length = len >= before_length ? (len - before_length) : len + before_length;
before_length = ABS (MIN (offset, 0));
after_length = MAX (0, offset + len);
g_warn_if_fail (ABS (offset) <= len);
wl_resource_for_each (resource, &text_input->focus_resource_list)
{

5
src/wayland/meta-wayland-text-input.c
View File

@ -175,8 +175,9 @@ meta_wayland_text_input_focus_delete_surrounding (ClutterInputFocus *focus,
struct wl_resource *resource;
text_input = META_WAYLAND_TEXT_INPUT_FOCUS (focus)->text_input;
before_length = offset <= 0 ? -offset : offset;
after_length = len >= before_length ? (len - before_length) : len + before_length;
before_length = ABS (MIN (offset, 0));
after_length = MAX (0, offset + len);
g_warn_if_fail (ABS (offset) <= len);
wl_resource_for_each (resource, &text_input->focus_resource_list)
{