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surface: add WLR_SURFACE_STATE_SUBSURFACES

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This allows to figure out when the subsurface list has changed:
subsurface added, removed, or re-ordered. In the case where
the subsurface list hasn't changed, some book-keeping operations
can be skipped.
This commit is contained in:
Simon Ser 2021-09-06 18:01:58 +02:00
parent 610f0c0805
commit 0da7eb18ea
2 changed files with 5 additions and 0 deletions
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1
include/wlr/types/wlr_surface.h
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@ -27,6 +27,7 @@ enum wlr_surface_state_field {
WLR_SURFACE_STATE_SCALE = 1 << 6,
WLR_SURFACE_STATE_FRAME_CALLBACK_LIST = 1 << 7,
WLR_SURFACE_STATE_VIEWPORT = 1 << 8,
WLR_SURFACE_STATE_SUBSURFACES = 1 << 9,
};
struct wlr_surface_state {

4
types/wlr_surface.c
View file

@ -698,6 +698,7 @@ static void subsurface_destroy(struct wlr_subsurface *subsurface) {
wl_list_remove(&subsurface->surface_destroy.link);
if (subsurface->parent) {
subsurface->parent->pending.committed |= WLR_SURFACE_STATE_SUBSURFACES;
wl_list_remove(&subsurface->current.link);
wl_list_remove(&subsurface->pending.link);
wl_list_remove(&subsurface->parent_destroy.link);
@ -947,6 +948,7 @@ static void subsurface_handle_place_above(struct wl_client *client,
node = &sibling->pending.link;
}
subsurface->parent->pending.committed |= WLR_SURFACE_STATE_SUBSURFACES;
wl_list_remove(&subsurface->pending.link);
wl_list_insert(node, &subsurface->pending.link);
@ -979,6 +981,7 @@ static void subsurface_handle_place_below(struct wl_client *client,
node = &sibling->pending.link;
}
subsurface->parent->pending.committed |= WLR_SURFACE_STATE_SUBSURFACES;
wl_list_remove(&subsurface->pending.link);
wl_list_insert(node->prev, &subsurface->pending.link);
@ -1190,6 +1193,7 @@ struct wlr_subsurface *subsurface_create(struct wlr_surface *surface,
// link parent
subsurface->parent = parent;
subsurface->parent->pending.committed |= WLR_SURFACE_STATE_SUBSURFACES;
wl_signal_add(&parent->events.destroy, &subsurface->parent_destroy);
subsurface->parent_destroy.notify = subsurface_handle_parent_destroy;
wl_list_insert(parent->current.subsurfaces_above.prev, &subsurface->current.link);