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scene: stricter assertions on reparent

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For consistency with the rest of the scene-graph API, prevent detaching
a subtree by giving NULL for the new parent, and don't allow ROOT nodes
to be grafted into another tree.
This commit is contained in:
Devin J. Pohly 2021-08-29 16:58:12 -05:00 committed by Simon Ser
parent d5263be355
commit 7ec9523ea3
1 changed files with 3 additions and 4 deletions
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7
types/wlr_scene.c
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@ -135,6 +135,8 @@ void wlr_scene_node_place_below(struct wlr_scene_node *node,
void wlr_scene_node_reparent(struct wlr_scene_node *node,
struct wlr_scene_node *new_parent) {
assert(node->type != WLR_SCENE_NODE_ROOT && new_parent != NULL);
if (node->parent == new_parent) {
return;
}
@ -145,11 +147,8 @@ void wlr_scene_node_reparent(struct wlr_scene_node *node,
}
wl_list_remove(&node->state.link);
node->parent = new_parent;
if (new_parent != NULL) {
wl_list_insert(new_parent->state.children.prev, &node->state.link);
}
wl_list_insert(new_parent->state.children.prev, &node->state.link);
}
static void scene_node_for_each_surface(struct wlr_scene_node *node,