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node.c: add helpers for returning structs from node data

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Support returning the following structs:
  - view from LAB_NODE_DESC_VIEW or LAB_NODE_DESC_XDG_POPUP
  - lab_layer_surface form LAB_NODE_DESC_LAYER_SURFACE
  - lab_layer_popup from LAB_NODE_DESC_LAYER_POPUP
This commit is contained in:
Johan Malm 2022-03-02 22:05:41 +00:00
parent 30298228e3
commit b4cbc20e8c
3 changed files with 66 additions and 13 deletions
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29
src/node.c
View file

@ -1,4 +1,5 @@
// SPDX-License-Identifier: GPL-2.0-only
#include <assert.h>
#include <stdlib.h>
#include "node.h"
@ -21,7 +22,7 @@ destroy_notify(struct wl_listener *listener, void *data)
}
void
node_descriptor_create(struct wlr_scene_node *node,
node_descriptor_create(struct wlr_scene_node *scene_node,
enum node_descriptor_type type, void *data)
{
struct node_descriptor *node_descriptor =
@ -32,6 +33,28 @@ node_descriptor_create(struct wlr_scene_node *node,
node_descriptor->type = type;
node_descriptor->data = data;
node_descriptor->destroy.notify = destroy_notify;
wl_signal_add(&node->events.destroy, &node_descriptor->destroy);
node->data = node_descriptor;
wl_signal_add(&scene_node->events.destroy, &node_descriptor->destroy);
scene_node->data = node_descriptor;
}
struct view *
node_view_from_node(struct node_descriptor *node_descriptor)
{
assert(node_descriptor->type == LAB_NODE_DESC_VIEW
|| node_descriptor->type == LAB_NODE_DESC_XDG_POPUP);
return (struct view *)node_descriptor->data;
}
struct lab_layer_surface *
node_layer_surface_from_node(struct node_descriptor *node_descriptor)
{
assert(node_descriptor->type == LAB_NODE_DESC_LAYER_SURFACE);
return (struct lab_layer_surface *)node_descriptor->data;
}
struct lab_layer_popup *
node_layer_popup_from_node(struct node_descriptor *node_descriptor)
{
assert(node_descriptor->type == LAB_NODE_DESC_LAYER_POPUP);
return (struct lab_layer_popup *)node_descriptor->data;
}