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Add wlr_subcompositor

This commit is contained in:
emersion 2018-04-21 19:02:39 +01:00
parent fa84b267e0
commit bfcd3f3707
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GPG Key ID: 0FDE7BE0E88F5E48
2 changed files with 103 additions and 76 deletions
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7
include/wlr/types/wlr_compositor.h
View File

@ -6,7 +6,10 @@
struct wlr_surface; struct wlr_surface;
// TODO: expose subcompositor struct wlr_subcompositor {
struct wl_global *wl_global;
struct wl_list wl_resources;
};
struct wlr_compositor { struct wlr_compositor {
struct wl_global *wl_global; struct wl_global *wl_global;
@ -14,6 +17,8 @@ struct wlr_compositor {
struct wlr_renderer *renderer; struct wlr_renderer *renderer;
struct wl_list surfaces; struct wl_list surfaces;
struct wlr_subcompositor subcompositor;
struct wl_listener display_destroy; struct wl_listener display_destroy;
struct { struct {

172
types/wlr_compositor.c
View File

@ -10,7 +10,8 @@
static const char *subsurface_role = "wl_subsurface"; static const char *subsurface_role = "wl_subsurface";
bool wlr_surface_is_subsurface(struct wlr_surface *surface) { bool wlr_surface_is_subsurface(struct wlr_surface *surface) {
return strcmp(surface->role, subsurface_role) == 0; return surface->role != NULL &&
strcmp(surface->role, subsurface_role) == 0;
} }
struct wlr_subsurface *wlr_subsurface_from_surface( struct wlr_subsurface *wlr_subsurface_from_surface(
@ -19,9 +20,96 @@ struct wlr_subsurface *wlr_subsurface_from_surface(
return (struct wlr_subsurface *)surface->role_data; return (struct wlr_subsurface *)surface->role_data;
} }
static void subcompositor_handle_destroy(struct wl_client *client,
struct wl_resource *resource) {
wl_resource_destroy(resource);
}
static void subcompositor_handle_get_subsurface(struct wl_client *client,
struct wl_resource *resource, uint32_t id,
struct wl_resource *surface_resource,
struct wl_resource *parent_resource) {
struct wlr_surface *surface = wlr_surface_from_resource(surface_resource);
struct wlr_surface *parent = wlr_surface_from_resource(parent_resource);
static const char msg[] = "get_subsurface: wl_subsurface@";
if (surface == parent) {
wl_resource_post_error(resource,
WL_SUBCOMPOSITOR_ERROR_BAD_SURFACE,
"%s%d: wl_surface@%d cannot be its own parent",
msg, id, wl_resource_get_id(surface_resource));
return;
}
if (wlr_surface_is_subsurface(surface)) {
wl_resource_post_error(resource,
WL_SUBCOMPOSITOR_ERROR_BAD_SURFACE,
"%s%d: wl_surface@%d is already a sub-surface",
msg, id, wl_resource_get_id(surface_resource));
return;
}
if (wlr_surface_get_root_surface(parent) == surface) {
wl_resource_post_error(resource,
WL_SUBCOMPOSITOR_ERROR_BAD_SURFACE,
"%s%d: wl_surface@%d is an ancestor of parent",
msg, id, wl_resource_get_id(surface_resource));
return;
}
if (wlr_surface_set_role(surface, subsurface_role, resource,
WL_SUBCOMPOSITOR_ERROR_BAD_SURFACE) < 0) {
return;
}
wlr_surface_make_subsurface(surface, parent, id);
}
static const struct wl_subcompositor_interface subcompositor_interface = {
.destroy = subcompositor_handle_destroy,
.get_subsurface = subcompositor_handle_get_subsurface,
};
static void subcompositor_bind(struct wl_client *client, void *data,
uint32_t version, uint32_t id) {
struct wlr_subcompositor *subcompositor = data;
struct wl_resource *resource =
wl_resource_create(client, &wl_subcompositor_interface, 1, id);
if (resource == NULL) {
wl_client_post_no_memory(client);
return;
}
wl_resource_set_implementation(resource, &subcompositor_interface,
subcompositor, NULL);
wl_list_insert(&subcompositor->wl_resources, wl_resource_get_link(resource));
}
static void subcompositor_init(struct wlr_subcompositor *subcompositor,
struct wl_display *display) {
subcompositor->wl_global = wl_global_create(display,
&wl_subcompositor_interface, 1, subcompositor, subcompositor_bind);
if (subcompositor->wl_global == NULL) {
wlr_log_errno(L_ERROR, "Could not allocate subcompositor global");
return;
}
wl_list_init(&subcompositor->wl_resources);
}
static void subcompositor_finish(struct wlr_subcompositor *subcompositor) {
wl_global_destroy(subcompositor->wl_global);
}
static const struct wl_compositor_interface wl_compositor_impl; static const struct wl_compositor_interface wl_compositor_impl;
static struct wlr_compositor *compositor_from_resource(struct wl_resource *resource) { static struct wlr_compositor *compositor_from_resource(
struct wl_resource *resource) {
assert(wl_resource_instance_of(resource, &wl_compositor_interface, assert(wl_resource_instance_of(resource, &wl_compositor_interface,
&wl_compositor_impl)); &wl_compositor_impl));
return wl_resource_get_user_data(resource); return wl_resource_get_user_data(resource);
@ -86,16 +174,15 @@ static void wl_compositor_bind(struct wl_client *wl_client, void *data,
struct wlr_compositor *compositor = data; struct wlr_compositor *compositor = data;
assert(wl_client && compositor); assert(wl_client && compositor);
struct wl_resource *wl_resource = struct wl_resource *resource =
wl_resource_create(wl_client, &wl_compositor_interface, version, id); wl_resource_create(wl_client, &wl_compositor_interface, version, id);
if (wl_resource == NULL) { if (resource == NULL) {
wl_client_post_no_memory(wl_client); wl_client_post_no_memory(wl_client);
return; return;
} }
wl_resource_set_implementation(wl_resource, &wl_compositor_impl, wl_resource_set_implementation(resource, &wl_compositor_impl,
compositor, wl_compositor_destroy); compositor, wl_compositor_destroy);
wl_list_insert(&compositor->wl_resources, wl_list_insert(&compositor->wl_resources, wl_resource_get_link(resource));
wl_resource_get_link(wl_resource));
} }
void wlr_compositor_destroy(struct wlr_compositor *compositor) { void wlr_compositor_destroy(struct wlr_compositor *compositor) {
@ -103,76 +190,12 @@ void wlr_compositor_destroy(struct wlr_compositor *compositor) {
return; return;
} }
wlr_signal_emit_safe(&compositor->events.destroy, compositor); wlr_signal_emit_safe(&compositor->events.destroy, compositor);
subcompositor_finish(&compositor->subcompositor);
wl_list_remove(&compositor->display_destroy.link); wl_list_remove(&compositor->display_destroy.link);
wl_global_destroy(compositor->wl_global); wl_global_destroy(compositor->wl_global);
free(compositor); free(compositor);
} }
static void subcompositor_destroy(struct wl_client *client,
struct wl_resource *resource) {
wl_resource_destroy(resource);
}
static void subcompositor_get_subsurface(struct wl_client *client,
struct wl_resource *resource, uint32_t id,
struct wl_resource *surface_resource,
struct wl_resource *parent_resource) {
struct wlr_surface *surface = wlr_surface_from_resource(surface_resource);
struct wlr_surface *parent = wlr_surface_from_resource(parent_resource);
static const char msg[] = "get_subsurface: wl_subsurface@";
if (surface == parent) {
wl_resource_post_error(resource,
WL_SUBCOMPOSITOR_ERROR_BAD_SURFACE,
"%s%d: wl_surface@%d cannot be its own parent",
msg, id, wl_resource_get_id(surface_resource));
return;
}
if (wlr_surface_is_subsurface(surface)) {
wl_resource_post_error(resource,
WL_SUBCOMPOSITOR_ERROR_BAD_SURFACE,
"%s%d: wl_surface@%d is already a sub-surface",
msg, id, wl_resource_get_id(surface_resource));
return;
}
if (wlr_surface_get_root_surface(parent) == surface) {
wl_resource_post_error(resource,
WL_SUBCOMPOSITOR_ERROR_BAD_SURFACE,
"%s%d: wl_surface@%d is an ancestor of parent",
msg, id, wl_resource_get_id(surface_resource));
return;
}
if (wlr_surface_set_role(surface, subsurface_role, resource,
WL_SUBCOMPOSITOR_ERROR_BAD_SURFACE) < 0) {
return;
}
wlr_surface_make_subsurface(surface, parent, id);
}
static const struct wl_subcompositor_interface subcompositor_interface = {
.destroy = subcompositor_destroy,
.get_subsurface = subcompositor_get_subsurface,
};
static void subcompositor_bind(struct wl_client *client, void *data,
uint32_t version, uint32_t id) {
struct wlr_compositor *compositor = data;
struct wl_resource *resource =
wl_resource_create(client, &wl_subcompositor_interface, 1, id);
if (resource == NULL) {
wl_client_post_no_memory(client);
return;
}
wl_resource_set_implementation(resource, &subcompositor_interface,
compositor, NULL);
}
static void handle_display_destroy(struct wl_listener *listener, void *data) { static void handle_display_destroy(struct wl_listener *listener, void *data) {
struct wlr_compositor *compositor = struct wlr_compositor *compositor =
wl_container_of(listener, compositor, display_destroy); wl_container_of(listener, compositor, display_destroy);
@ -198,14 +221,13 @@ struct wlr_compositor *wlr_compositor_create(struct wl_display *display,
compositor->wl_global = compositor_global; compositor->wl_global = compositor_global;
compositor->renderer = renderer; compositor->renderer = renderer;
wl_global_create(display, &wl_subcompositor_interface, 1, compositor,
subcompositor_bind);
wl_list_init(&compositor->wl_resources); wl_list_init(&compositor->wl_resources);
wl_list_init(&compositor->surfaces); wl_list_init(&compositor->surfaces);
wl_signal_init(&compositor->events.new_surface); wl_signal_init(&compositor->events.new_surface);
wl_signal_init(&compositor->events.destroy); wl_signal_init(&compositor->events.destroy);
subcompositor_init(&compositor->subcompositor, display);
compositor->display_destroy.notify = handle_display_destroy; compositor->display_destroy.notify = handle_display_destroy;
wl_display_add_destroy_listener(display, &compositor->display_destroy); wl_display_add_destroy_listener(display, &compositor->display_destroy);