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#include <assert.h>
#include <stdlib.h>
#include <wlr/types/wlr_content_type_v1.h>
#include <wlr/types/wlr_compositor.h>
#define CONTENT_TYPE_VERSION 1
struct wlr_content_type_v1_surface {
struct wl_resource *resource;
struct wlr_addon addon;
enum wp_content_type_v1_type pending, current;
struct wlr_surface_synced synced;
};
static void resource_handle_destroy(struct wl_client *client,
struct wl_resource *resource) {
wl_resource_destroy(resource);
}
static const struct wp_content_type_v1_interface content_type_surface_impl;
static const struct wp_content_type_manager_v1_interface manager_impl;
// Returns NULL if the resource is inert
static struct wlr_content_type_v1_surface *content_type_surface_from_resource(
struct wl_resource *resource) {
assert(wl_resource_instance_of(resource,
&wp_content_type_v1_interface, &content_type_surface_impl));
return wl_resource_get_user_data(resource);
}
static struct wlr_content_type_manager_v1 *manager_from_resource(
struct wl_resource *resource) {
assert(wl_resource_instance_of(resource,
&wp_content_type_manager_v1_interface, &manager_impl));
return wl_resource_get_user_data(resource);
}
static void content_type_surface_handle_set_content_type(struct wl_client *client,
struct wl_resource *resource, uint32_t type) {
struct wlr_content_type_v1_surface *content_type_surface =
content_type_surface_from_resource(resource);
if (content_type_surface == NULL) {
return;
}
content_type_surface->pending = type;
}
static const struct wp_content_type_v1_interface content_type_surface_impl = {
.destroy = resource_handle_destroy,
.set_content_type = content_type_surface_handle_set_content_type,
};
static void content_type_surface_destroy(
struct wlr_content_type_v1_surface *content_type_surface) {
if (content_type_surface == NULL) {
return;
}
wlr_addon_finish(&content_type_surface->addon);
wlr_surface_synced_finish(&content_type_surface->synced);
wl_resource_set_user_data(content_type_surface->resource, NULL);
free(content_type_surface);
}
static void surface_addon_destroy(struct wlr_addon *addon) {
struct wlr_content_type_v1_surface *content_type_surface =
wl_container_of(addon, content_type_surface, addon);
content_type_surface_destroy(content_type_surface);
}
static const struct wlr_addon_interface surface_addon_impl = {
.name = "wp_content_type_v1",
.destroy = surface_addon_destroy,
};
static const struct wlr_surface_synced_impl surface_synced_impl = {
.state_size = sizeof(enum wp_content_type_v1_type),
};
static void content_type_surface_handle_resource_destroy(
struct wl_resource *resource) {
struct wlr_content_type_v1_surface *content_type_surface =
content_type_surface_from_resource(resource);
content_type_surface_destroy(content_type_surface);
}
static void manager_handle_get_surface_content_type(struct wl_client *client,
struct wl_resource *manager_resource, uint32_t id,
struct wl_resource *surface_resource) {
struct wlr_content_type_manager_v1 *manager =
manager_from_resource(manager_resource);
struct wlr_surface *surface = wlr_surface_from_resource(surface_resource);
if (wlr_addon_find(&surface->addons, manager, &surface_addon_impl) != NULL) {
wl_resource_post_error(manager_resource,
WP_CONTENT_TYPE_MANAGER_V1_ERROR_ALREADY_CONSTRUCTED,
"wp_content_type_v1 already constructed for this surface");
return;
}
struct wlr_content_type_v1_surface *content_type_surface =
calloc(1, sizeof(*content_type_surface));
if (content_type_surface == NULL) {
wl_resource_post_no_memory(manager_resource);
return;
}
if (!wlr_surface_synced_init(&content_type_surface->synced, surface,
&surface_synced_impl, &content_type_surface->pending,
&content_type_surface->current)) {
free(content_type_surface);
wl_resource_post_no_memory(manager_resource);
return;
}
uint32_t version = wl_resource_get_version(manager_resource);
content_type_surface->resource = wl_resource_create(client,
&wp_content_type_v1_interface, version, id);
if (content_type_surface->resource == NULL) {
wlr_surface_synced_finish(&content_type_surface->synced);
free(content_type_surface);
wl_resource_post_no_memory(manager_resource);
return;
}
wl_resource_set_implementation(content_type_surface->resource,
&content_type_surface_impl, content_type_surface,
content_type_surface_handle_resource_destroy);
wlr_addon_init(&content_type_surface->addon, &surface->addons,
manager, &surface_addon_impl);
}
static const struct wp_content_type_manager_v1_interface manager_impl = {
.destroy = resource_handle_destroy,
.get_surface_content_type = manager_handle_get_surface_content_type,
};
static void manager_bind(struct wl_client *client, void *data,
uint32_t version, uint32_t id) {
struct wlr_content_type_manager_v1 *manager = data;
struct wl_resource *resource = wl_resource_create(client,
&wp_content_type_manager_v1_interface, version, id);
if (resource == NULL) {
wl_client_post_no_memory(client);
return;
}
wl_resource_set_implementation(resource, &manager_impl, manager, NULL);
}
static void handle_display_destroy(struct wl_listener *listener, void *data) {
struct wlr_content_type_manager_v1 *manager =
wl_container_of(listener, manager, display_destroy);
wl_signal_emit_mutable(&manager->events.destroy, NULL);
assert(wl_list_empty(&manager->events.destroy.listener_list));
wl_global_destroy(manager->global);
wl_list_remove(&manager->display_destroy.link);
free(manager);
}
struct wlr_content_type_manager_v1 *wlr_content_type_manager_v1_create(
struct wl_display *display, uint32_t version) {
assert(version <= CONTENT_TYPE_VERSION);
struct wlr_content_type_manager_v1 *manager = calloc(1, sizeof(*manager));
if (manager == NULL) {
return NULL;
}
manager->global = wl_global_create(display,
&wp_content_type_manager_v1_interface, version, manager, manager_bind);
if (manager->global == NULL) {
free(manager);
return NULL;
}
wl_signal_init(&manager->events.destroy);
manager->display_destroy.notify = handle_display_destroy;
wl_display_add_destroy_listener(display, &manager->display_destroy);
return manager;
}
enum wp_content_type_v1_type wlr_surface_get_content_type_v1(
struct wlr_content_type_manager_v1 *manager, struct wlr_surface *surface) {
struct wlr_addon *addon =
wlr_addon_find(&surface->addons, manager, &surface_addon_impl);
if (addon == NULL) {
return WP_CONTENT_TYPE_V1_TYPE_NONE;
}
struct wlr_content_type_v1_surface *content_type_surface =
wl_container_of(addon, content_type_surface, addon);
return content_type_surface->current;
}
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