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overlay: refactor

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- Use a single `lab_scene_rect` for both overlay background and outlines,
  like I described in the TODO comment in ffd4005.
- Simplify the resource management by destroying the overlay tree when
  it's hidden. I think its overhead is pretty minimal.
- Share a single `lab_scene_rect` for both region/edge overlays.
This commit is contained in:
tokyo4j 2025-08-31 04:41:08 +09:00 • committed by Johan Malm
parent 78d47c5c37
commit 66e26cd28a
8 changed files with 51 additions and 154 deletions
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2
src/regions.c
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@ -166,7 +166,7 @@ regions_destroy(struct seat *seat, struct wl_list *regions)
wl_list_for_each_safe(region, region_tmp, regions, link) {
wl_list_remove(&region->link);
if (seat && seat->overlay.active.region == region) {
overlay_hide(seat);
overlay_finish(seat);
}
zfree(region->name);
zfree(region);