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scene: add wlr_scene_get_scene_output 

This allows getting a wlr_scene_output from a wlr_output. Since an
output can only be added once to a scene-graph there's no ambiguity.

This is useful for compositors using wlr_scene_attach_output_layout:
the output layout integration automatically creates a scene-graph
output for each wlr_output added to the layout.
This commit is contained in:
Simon Ser 2021-11-30 20:55:04 +01:00 committed by Isaac Freund
parent dd84c5a1cc
commit ba974a4e9f
2 changed files with 19 additions and 0 deletions
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7
include/wlr/types/wlr_scene.h
View File

@ -282,6 +282,13 @@ bool wlr_scene_output_commit(struct wlr_scene_output *scene_output);
*/
void wlr_scene_output_for_each_surface(struct wlr_scene_output *scene_output,
wlr_surface_iterator_func_t iterator, void *user_data);
/**
* Get a scene-graph output from a wlr_output.
*
* If the output hasn't been added to the scene-graph, returns NULL.
*/
struct wlr_scene_output *wlr_scene_get_scene_output(struct wlr_scene *scene,
struct wlr_output *output);
/**
* Attach an output layout to a scene.

12
types/scene/wlr_scene.c
View File

@ -828,6 +828,18 @@ void wlr_scene_output_destroy(struct wlr_scene_output *scene_output) {
free(scene_output);
}
struct wlr_scene_output *wlr_scene_get_scene_output(struct wlr_scene *scene,
struct wlr_output *output) {
struct wlr_addon *addon =
wlr_addon_find(&output->addons, scene, &output_addon_impl);
if (addon == NULL) {
return NULL;
}
struct wlr_scene_output *scene_output =
wl_container_of(addon, scene_output, addon);
return scene_output;
}
void wlr_scene_output_set_position(struct wlr_scene_output *scene_output,
int lx, int ly) {
if (scene_output->x == lx && scene_output->y == ly) {