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wlr_scene: Introduce wlr_scene_subsurface_tree.is_visible and event

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This commit is contained in:
Alexander Orzechowski 2024-07-04 13:51:25 -04:00
parent 327ae35307
commit 21a4df624f
2 changed files with 44 additions and 0 deletions
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6
include/wlr/types/wlr_scene.h
View file

@ -134,10 +134,16 @@ struct wlr_scene_surface {
struct wlr_scene_subsurface_tree_surface;
struct wlr_scene_subsurface_tree {
struct wlr_scene_tree *tree;
bool is_visible;
struct {
struct wl_signal visibility;
} events;
// private state
struct wl_list surfaces;
uint16_t visible_surfaces;
struct wlr_scene_subsurface_tree_surface *root;
};

38
types/scene/subsurface_tree.c
View file

@ -22,12 +22,14 @@ struct wlr_scene_subsurface_tree_surface {
struct wl_listener surface_map;
struct wl_listener surface_unmap;
struct wl_listener surface_new_subsurface;
struct wl_listener scene_outputs_update;
struct wl_listener scene_destroy;
struct wlr_scene_subsurface_tree_surface *parent; // NULL for the top-level surface
struct wlr_box clip;
struct wl_list link;
bool is_visible;
// Only valid if the surface is a sub-surface
@ -36,9 +38,32 @@ struct wlr_scene_subsurface_tree_surface {
struct wl_listener subsurface_destroy;
};
static void subsurface_tree_handle_update_visibility(
struct wlr_scene_subsurface_tree_surface *tree, bool is_destroying) {
bool is_visible = tree->scene_surface->buffer->primary_output && !is_destroying;
if (is_visible && !tree->is_visible) {
tree->subsurface_tree->visible_surfaces++;
} else if (!is_visible && tree->is_visible) {
assert(tree->subsurface_tree->visible_surfaces > 0);
tree->subsurface_tree->visible_surfaces--;
}
tree->is_visible = is_visible;
bool is_tree_visible = tree->subsurface_tree->visible_surfaces > 0;
if (is_tree_visible != tree->subsurface_tree->is_visible) {
tree->subsurface_tree->is_visible = is_tree_visible;
wl_signal_emit_mutable(&tree->subsurface_tree->events.visibility, NULL);
}
}
static void subsurface_tree_handle_scene_destroy(struct wl_listener *listener, void *data) {
struct wlr_scene_subsurface_tree_surface *subsurface_tree =
wl_container_of(listener, subsurface_tree, scene_destroy);
subsurface_tree_handle_update_visibility(subsurface_tree, true);
// tree and scene_surface will be cleaned up by scene_node_finish
if (subsurface_tree->parent) {
wlr_addon_finish(&subsurface_tree->surface_addon);
@ -235,6 +260,13 @@ static void subsurface_tree_handle_surface_new_subsurface(
}
}
static void subsurface_tree_handle_scene_outputs_update(
struct wl_listener *listener, void *data) {
struct wlr_scene_subsurface_tree_surface *subsurface_tree =
wl_container_of(listener, subsurface_tree, scene_outputs_update);
subsurface_tree_handle_update_visibility(subsurface_tree, false);
}
static struct wlr_scene_subsurface_tree_surface *scene_surface_tree_create_surface(
struct wlr_scene_subsurface_tree *tree,
struct wlr_scene_tree *parent, struct wlr_surface *surface) {
@ -278,6 +310,10 @@ static struct wlr_scene_subsurface_tree_surface *scene_surface_tree_create_surfa
subsurface_tree->scene_destroy.notify = subsurface_tree_handle_scene_destroy;
wl_signal_add(&subsurface_tree->tree->node.events.destroy, &subsurface_tree->scene_destroy);
subsurface_tree->scene_outputs_update.notify = subsurface_tree_handle_scene_outputs_update;
wl_signal_add(&subsurface_tree->scene_surface->buffer->events.outputs_update,
&subsurface_tree->scene_outputs_update);
subsurface_tree->surface_destroy.notify = subsurface_tree_handle_surface_destroy;
wl_signal_add(&surface->events.destroy, &subsurface_tree->surface_destroy);
@ -296,6 +332,7 @@ static struct wlr_scene_subsurface_tree_surface *scene_surface_tree_create_surfa
&subsurface_tree->surface_new_subsurface);
wlr_scene_node_set_enabled(&subsurface_tree->tree->node, surface->mapped);
subsurface_tree_handle_update_visibility(subsurface_tree, false);
return subsurface_tree;
@ -314,6 +351,7 @@ struct wlr_scene_subsurface_tree *wlr_scene_subsurface_tree_create(
}
wl_list_init(&subsurface_tree->surfaces);
wl_signal_init(&subsurface_tree->events.visibility);
struct wlr_scene_subsurface_tree_surface *subsurface_tree_surface =
scene_surface_tree_create_surface(subsurface_tree, parent, surface);