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scene: add wlr_scene_node_coords

This commit is contained in:
Simon Ser 2021-08-17 13:20:32 +02:00 committed by Simon Zeni
parent 04d105760d
commit 9195b77e14
2 changed files with 22 additions and 0 deletions
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6
include/wlr/types/wlr_scene.h
View File

@ -118,6 +118,12 @@ 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);
/**
* Get the node's layout-local coordinates.
*
* True is returned if the node and all of its ancestors are enabled.
*/
bool wlr_scene_node_coords(struct wlr_scene_node *node, int *lx, int *ly);
/**
* Call `iterator` on each surface in the scene-graph, with the surface's
* position in layout coordinates. The function is called from root to leaves

16
types/wlr_scene.c
View File

@ -193,6 +193,22 @@ void wlr_scene_node_reparent(struct wlr_scene_node *node,
wl_list_insert(new_parent->state.children.prev, &node->state.link);
}
bool wlr_scene_node_coords(struct wlr_scene_node *node,
int *lx_ptr, int *ly_ptr) {
int lx = 0, ly = 0;
bool enabled = true;
while (node != NULL) {
lx += node->state.x;
ly += node->state.y;
enabled = enabled && node->state.enabled;
node = node->parent;
}
*lx_ptr = lx;
*ly_ptr = ly;
return enabled;
}
static void scene_node_for_each_surface(struct wlr_scene_node *node,
int lx, int ly, wlr_surface_iterator_func_t user_iterator,
void *user_data) {