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compositor: introduce sub-surfaces

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Implement the basic protocol for sub-surfaces:
- expose wl_subcompositor global interface
- error checking on protocol calls
- associate a parent wl_surface to a sub-surface
- introduce the sub-surface role, which is exclusive
- an implementation of the wl_subsurface interface
- allow nesting of sub-surfaces
- proper surface transformation inheritance from parent to sub-surfaces
- two different modes of wl_surface.commit for sub-surfaces
- hook sub-surfaces up to repaint by modifying the repaint list code

Struct weston_subsurface is dynamically allocated. For sub-surfaces, it
is completely populated.

For parent surfaces, weston_subsurface acts only as a link for stacking
order purposes. The wl_resource is unused, parent_destroy_listener is
not registered, the transform is not linked, etc.

Sub-surfaces are not added directly into layers for display or input.
Instead, they are hooked up via the sub-surface list present in parent
weston_surface. This way sub-surfaces are inherently linked to the
parent surface, and cannot be displayed unless the parent is mapped,
too. This also eases restacking, as only the parent will be in a layer
list. Also, only the main surface should be subject to shell actions.

The surface list rebuilding in weston_output_repaint() is modified to
process sub-surface lists, if they are non-empty. The sub-surface list
always contains the parent, too, unless empty. The collection of
frame_callback_list is moved to a later loop, to streamline the surface
list rebuild functions.

Features still lacking are:
- full-surface alpha support for compound windows

Changes in v2:
- fix a bug in surface mapping: commit a sub-surface would cause the
  main surface to never be mapped.
- remove debug printfs
- detect attempt of making a surface its own parent
- always zero-alloc weston_subsurface
- apply wl_subsurface.set_position in commit, not immediately
- add weston_surface_to_subsurface()
- implement sub-surface commit modes parent-cached and independent
- implement wl_subcompositor.destroy and wl_subsurface.destroy

Changes in v3:
- rebased, and use the new transform inheritance code
- squashed the commit "add sub-surfaces to repaint list"
- fixed a buffer reference leak in commit_from_cache()
- Rewrite the sub-surface destructor code, and make it leave the
  wl_subsurface protocol object inert, if one destroys the corresponding
  wl_surface.
- replaced set_commit_mode with set_sync and set_desync
- allowed sub-surface nesting, and fixed repaint accordingly
- implemented nested sub-surface commit modes
- Made the sub-surface order changes from wl_subsurface.place_above and
  .place_below to be applied when the parent surface state is applied,
  instead of immediately. This conforms with the protocol specification
  now.

Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
Pekka Paalanen 12 years ago committed by Kristian Høgsberg
parent 2396aec684
commit e67858b9cf
2 changed files with 774 additions and 16 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 734
      src/compositor.c
  2. 54
      src/compositor.h

734
src/compositor.c
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@ -262,6 +262,9 @@ region_init_infinite(pixman_region32_t *region)
UINT32_MAX, UINT32_MAX);
}
static struct weston_subsurface *
weston_surface_to_subsurface(struct weston_surface *surface);
WL_EXPORT struct weston_surface *
weston_surface_create(struct weston_compositor *compositor)
{
@ -314,6 +317,9 @@ weston_surface_create(struct weston_compositor *compositor)
region_init_infinite(&surface->pending.input);
wl_list_init(&surface->pending.frame_callback_list);
wl_list_init(&surface->subsurface_list);
wl_list_init(&surface->subsurface_list_pending);
return surface;
}
@ -972,6 +978,8 @@ destroy_surface(struct wl_resource *resource)
struct weston_frame_callback *cb, *next;
assert(wl_list_empty(&surface->geometry.child_list));
assert(wl_list_empty(&surface->subsurface_list_pending));
assert(wl_list_empty(&surface->subsurface_list));
if (weston_surface_is_mapped(surface))
weston_surface_unmap(surface);
@ -1167,37 +1175,73 @@ compositor_accumulate_damage(struct weston_compositor *ec)
}
}
static void
surface_list_add(struct weston_compositor *compositor,
struct weston_surface *surface)
{
struct weston_subsurface *sub;
if (wl_list_empty(&surface->subsurface_list)) {
weston_surface_update_transform(surface);
wl_list_insert(compositor->surface_list.prev, &surface->link);
return;
}
wl_list_for_each(sub, &surface->subsurface_list, parent_link) {
if (!weston_surface_is_mapped(sub->surface))
continue;
if (sub->surface == surface) {
weston_surface_update_transform(sub->surface);
wl_list_insert(compositor->surface_list.prev,
&sub->surface->link);
} else {
surface_list_add(compositor, sub->surface);
}
}
}
static void
weston_compositor_build_surface_list(struct weston_compositor *compositor)
{
struct weston_surface *surface;
struct weston_layer *layer;
wl_list_init(&compositor->surface_list);
wl_list_for_each(layer, &compositor->layer_list, link) {
wl_list_for_each(surface, &layer->surface_list, layer_link) {
surface_list_add(compositor, surface);
}
}
}
static void
weston_output_repaint(struct weston_output *output, uint32_t msecs)
{
struct weston_compositor *ec = output->compositor;
struct weston_surface *es;
struct weston_layer *layer;
struct weston_animation *animation, *next;
struct weston_frame_callback *cb, *cnext;
struct wl_list frame_callback_list;
pixman_region32_t output_damage;
/* Rebuild the surface list and update surface transforms up front. */
wl_list_init(&ec->surface_list);
weston_compositor_build_surface_list(ec);
if (output->assign_planes && !output->disable_planes)
output->assign_planes(output);
else
wl_list_for_each(es, &ec->surface_list, link)
weston_surface_move_to_plane(es, &ec->primary_plane);
wl_list_init(&frame_callback_list);
wl_list_for_each(layer, &ec->layer_list, link) {
wl_list_for_each(es, &layer->surface_list, layer_link) {
weston_surface_update_transform(es);
wl_list_insert(ec->surface_list.prev, &es->link);
wl_list_for_each(es, &ec->surface_list, link) {
if (es->output == output) {
wl_list_insert_list(&frame_callback_list,
&es->frame_callback_list);
wl_list_init(&es->frame_callback_list);
}
}
}
if (output->assign_planes && !output->disable_planes)
output->assign_planes(output);
else
wl_list_for_each(es, &ec->surface_list, link)
weston_surface_move_to_plane(es, &ec->primary_plane);
compositor_accumulate_damage(ec);
@ -1425,9 +1469,20 @@ surface_set_input_region(struct wl_client *client,
}
static void
surface_commit(struct wl_client *client, struct wl_resource *resource)
weston_surface_commit_subsurface_order(struct weston_surface *surface)
{
struct weston_subsurface *sub;
wl_list_for_each_reverse(sub, &surface->subsurface_list_pending,
parent_link_pending) {
wl_list_remove(&sub->parent_link);
wl_list_insert(&surface->subsurface_list, &sub->parent_link);
}
}
static void
weston_surface_commit(struct weston_surface *surface)
{
struct weston_surface *surface = resource->data;
pixman_region32_t opaque;
int buffer_width = 0;
int buffer_height = 0;
@ -1492,9 +1547,37 @@ surface_commit(struct wl_client *client, struct wl_resource *resource)
&surface->pending.frame_callback_list);
wl_list_init(&surface->pending.frame_callback_list);
weston_surface_commit_subsurface_order(surface);
weston_surface_schedule_repaint(surface);
}
static void
weston_subsurface_commit(struct weston_subsurface *sub);
static void
weston_subsurface_parent_commit(struct weston_subsurface *sub,
int parent_is_synchronized);
static void
surface_commit(struct wl_client *client, struct wl_resource *resource)
{
struct weston_surface *surface = resource->data;
struct weston_subsurface *sub = weston_surface_to_subsurface(surface);
if (sub) {
weston_subsurface_commit(sub);
return;
}
weston_surface_commit(surface);
wl_list_for_each(sub, &surface->subsurface_list, parent_link) {
if (sub->surface != surface)
weston_subsurface_parent_commit(sub, 0);
}
}
static void
surface_set_buffer_transform(struct wl_client *client,
struct wl_resource *resource, int transform)
@ -1613,6 +1696,623 @@ static const struct wl_compositor_interface compositor_interface = {
compositor_create_region
};
static void
weston_subsurface_commit_from_cache(struct weston_subsurface *sub)
{
struct weston_surface *surface = sub->surface;
pixman_region32_t opaque;
int buffer_width = 0;
int buffer_height = 0;
/* wl_surface.set_buffer_rotation */
surface->buffer_transform = sub->cached.buffer_transform;
/* wl_surface.attach */
if (sub->cached.buffer_ref.buffer || sub->cached.newly_attached)
weston_surface_attach(surface, sub->cached.buffer_ref.buffer);
weston_buffer_reference(&sub->cached.buffer_ref, NULL);
if (surface->buffer_ref.buffer) {
buffer_width = weston_surface_buffer_width(surface);
buffer_height = weston_surface_buffer_height(surface);
}
if (surface->configure && sub->cached.newly_attached)
surface->configure(surface, sub->cached.sx, sub->cached.sy,
buffer_width, buffer_height);
sub->cached.sx = 0;
sub->cached.sy = 0;
sub->cached.newly_attached = 0;
/* wl_surface.damage */
pixman_region32_union(&surface->damage, &surface->damage,
&sub->cached.damage);
pixman_region32_intersect_rect(&surface->damage, &surface->damage,
0, 0,
surface->geometry.width,
surface->geometry.height);
empty_region(&sub->cached.damage);
/* wl_surface.set_opaque_region */
pixman_region32_init_rect(&opaque, 0, 0,
surface->geometry.width,
surface->geometry.height);
pixman_region32_intersect(&opaque,
&opaque, &sub->cached.opaque);
if (!pixman_region32_equal(&opaque, &surface->opaque)) {
pixman_region32_copy(&surface->opaque, &opaque);
weston_surface_geometry_dirty(surface);
}
pixman_region32_fini(&opaque);
/* wl_surface.set_input_region */
pixman_region32_fini(&surface->input);
pixman_region32_init_rect(&surface->input, 0, 0,
surface->geometry.width,
surface->geometry.height);
pixman_region32_intersect(&surface->input,
&surface->input, &sub->cached.input);
/* wl_surface.frame */
wl_list_insert_list(&surface->frame_callback_list,
&sub->cached.frame_callback_list);
wl_list_init(&sub->cached.frame_callback_list);
weston_surface_commit_subsurface_order(surface);
weston_surface_schedule_repaint(surface);
sub->cached.has_data = 0;
}
static void
weston_subsurface_commit_to_cache(struct weston_subsurface *sub)
{
struct weston_surface *surface = sub->surface;
/*
* If this commit would cause the surface to move by the
* attach(dx, dy) parameters, the old damage region must be
* translated to correspond to the new surface coordinate system
* origin.
*/
pixman_region32_translate(&sub->cached.damage,
-surface->pending.sx, -surface->pending.sy);
pixman_region32_union(&sub->cached.damage, &sub->cached.damage,
&surface->pending.damage);
empty_region(&surface->pending.damage);
if (surface->pending.newly_attached) {
sub->cached.newly_attached = 1;
weston_buffer_reference(&sub->cached.buffer_ref,
surface->pending.buffer);
}
sub->cached.sx += surface->pending.sx;
sub->cached.sy += surface->pending.sy;
surface->pending.sx = 0;
surface->pending.sy = 0;
surface->pending.newly_attached = 0;
sub->cached.buffer_transform = surface->pending.buffer_transform;
pixman_region32_copy(&sub->cached.opaque, &surface->pending.opaque);
pixman_region32_copy(&sub->cached.input, &surface->pending.input);
wl_list_insert_list(&sub->cached.frame_callback_list,
&surface->pending.frame_callback_list);
wl_list_init(&surface->pending.frame_callback_list);
sub->cached.has_data = 1;
}
static int
weston_subsurface_is_synchronized(struct weston_subsurface *sub)
{
while (sub) {
if (sub->synchronized)
return 1;
if (!sub->parent)
return 0;
sub = weston_surface_to_subsurface(sub->parent);
}
return 0;
}
static void
weston_subsurface_commit(struct weston_subsurface *sub)
{
struct weston_surface *surface = sub->surface;
struct weston_subsurface *tmp;
/* Recursive check for effectively synchronized. */
if (weston_subsurface_is_synchronized(sub)) {
weston_subsurface_commit_to_cache(sub);
} else {
if (sub->cached.has_data) {
/* flush accumulated state from cache */
weston_subsurface_commit_to_cache(sub);
weston_subsurface_commit_from_cache(sub);
} else {
weston_surface_commit(surface);
}
wl_list_for_each(tmp, &surface->subsurface_list, parent_link) {
if (tmp->surface != surface)
weston_subsurface_parent_commit(tmp, 0);
}
}
}
static void
weston_subsurface_parent_commit(struct weston_subsurface *sub,
int parent_is_synchronized)
{
struct weston_surface *surface = sub->surface;
struct weston_subsurface *tmp;
if (sub->position.set) {
weston_surface_set_position(sub->surface,
sub->position.x, sub->position.y);
sub->position.set = 0;
}
if (!parent_is_synchronized && !sub->synchronized)
return;
/* From now on, commit_from_cache the whole sub-tree, regardless of
* the synchronized mode of each child. This sub-surface or some
* of its ancestors were synchronized, so we are synchronized
* all the way down.
*/
if (sub->cached.has_data)
weston_subsurface_commit_from_cache(sub);
wl_list_for_each(tmp, &surface->subsurface_list, parent_link) {
if (tmp->surface != surface)
weston_subsurface_parent_commit(tmp, 1);
}
}
static void
subsurface_configure(struct weston_surface *surface, int32_t dx, int32_t dy,
int32_t width, int32_t height)
{
struct weston_compositor *compositor = surface->compositor;
weston_surface_configure(surface,
surface->geometry.x + dx,
surface->geometry.y + dy,
width, height);
/* No need to check parent mappedness, because if parent is not
* mapped, parent is not in a visible layer, so this sub-surface
* will not be drawn either.
*/
if (!weston_surface_is_mapped(surface)) {
wl_list_init(&surface->layer_link);
/* Cannot call weston_surface_update_transform(),
* because that would call it also for the parent surface,
* which might not be mapped yet. That would lead to
* inconsistent state, where the window could never be
* mapped.
*
* Instead just assing any output, to make
* weston_surface_is_mapped() return true, so that when the
* parent surface does get mapped, this one will get
* included, too. See surface_list_add().
*/
assert(!wl_list_empty(&compositor->output_list));
surface->output = container_of(compositor->output_list.next,
struct weston_output, link);
}
}
static struct weston_subsurface *
weston_surface_to_subsurface(struct weston_surface *surface)
{
if (surface->configure == subsurface_configure)
return surface->configure_private;
return NULL;
}
static void
subsurface_set_position(struct wl_client *client,
struct wl_resource *resource, int32_t x, int32_t y)
{
struct weston_subsurface *sub = resource->data;
if (!sub)
return;
sub->position.x = x;
sub->position.y = y;
sub->position.set = 1;
}
static struct weston_subsurface *
subsurface_from_surface(struct weston_surface *surface)
{
struct weston_subsurface *sub;
sub = weston_surface_to_subsurface(surface);
if (sub)
return sub;
wl_list_for_each(sub, &surface->subsurface_list, parent_link)
if (sub->surface == surface)
return sub;
return NULL;
}
static struct weston_subsurface *
subsurface_sibling_check(struct weston_subsurface *sub,
struct weston_surface *surface,
const char *request)
{
struct weston_subsurface *sibling;
sibling = subsurface_from_surface(surface);
if (!sibling) {
wl_resource_post_error(sub->resource,
WL_SUBSURFACE_ERROR_BAD_SURFACE,
"%s: wl_surface@%d is not a parent or sibling",
request, surface->resource.object.id);
return NULL;
}
if (sibling->parent != sub->parent) {
wl_resource_post_error(sub->resource,
WL_SUBSURFACE_ERROR_BAD_SURFACE,
"%s: wl_surface@%d has a different parent",
request, surface->resource.object.id);
return NULL;
}
return sibling;
}
static void
subsurface_place_above(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *sibling_resource)
{
struct weston_subsurface *sub = resource->data;
struct weston_surface *surface = sibling_resource->data;
struct weston_subsurface *sibling;
if (!sub)
return;
sibling = subsurface_sibling_check(sub, surface, "place_above");
if (!sibling)
return;
wl_list_remove(&sub->parent_link_pending);
wl_list_insert(sibling->parent_link_pending.prev,
&sub->parent_link_pending);
}
static void
subsurface_place_below(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *sibling_resource)
{
struct weston_subsurface *sub = resource->data;
struct weston_surface *surface = sibling_resource->data;
struct weston_subsurface *sibling;
if (!sub)
return;
sibling = subsurface_sibling_check(sub, surface, "place_below");
if (!sibling)
return;
wl_list_remove(&sub->parent_link_pending);
wl_list_insert(&sibling->parent_link_pending,
&sub->parent_link_pending);
}
static void
subsurface_set_sync(struct wl_client *client, struct wl_resource *resource)
{
struct weston_subsurface *sub = resource->data;
if (sub)
sub->synchronized = 1;
}
static void
subsurface_set_desync(struct wl_client *client, struct wl_resource *resource)
{
struct weston_subsurface *sub = resource->data;
if (sub)
sub->synchronized = 0;
}
static void
weston_subsurface_cache_init(struct weston_subsurface *sub)
{
pixman_region32_init(&sub->cached.damage);
pixman_region32_init(&sub->cached.opaque);
pixman_region32_init(&sub->cached.input);
wl_list_init(&sub->cached.frame_callback_list);
sub->cached.buffer_ref.buffer = NULL;
}
static void
weston_subsurface_cache_fini(struct weston_subsurface *sub)
{
struct weston_frame_callback *cb, *tmp;
wl_list_for_each_safe(cb, tmp, &sub->cached.frame_callback_list, link)
wl_resource_destroy(&cb->resource);
weston_buffer_reference(&sub->cached.buffer_ref, NULL);
pixman_region32_fini(&sub->cached.damage);
pixman_region32_fini(&sub->cached.opaque);
pixman_region32_fini(&sub->cached.input);
}
static void
weston_subsurface_unlink_parent(struct weston_subsurface *sub)
{
wl_list_remove(&sub->parent_link);
wl_list_remove(&sub->parent_link_pending);
wl_list_remove(&sub->parent_destroy_listener.link);
sub->parent = NULL;
}
static void
weston_subsurface_destroy(struct weston_subsurface *sub);
static void
subsurface_handle_surface_destroy(struct wl_listener *listener, void *data)
{
struct weston_subsurface *sub =
container_of(listener, struct weston_subsurface,
surface_destroy_listener);
assert(data == &sub->surface->resource);
/* The protocol object (wl_resource) is left inert. */
if (sub->resource)
sub->resource->data = NULL;
weston_subsurface_destroy(sub);
}
static void
subsurface_handle_parent_destroy(struct wl_listener *listener, void *data)
{
struct weston_subsurface *sub =
container_of(listener, struct weston_subsurface,
parent_destroy_listener);
assert(data == &sub->parent->resource);
assert(sub->surface != sub->parent);
if (weston_surface_is_mapped(sub->surface))
weston_surface_unmap(sub->surface);
weston_subsurface_unlink_parent(sub);
}
static void
subsurface_resource_destroy(struct wl_resource *resource)
{
struct weston_subsurface *sub = resource->data;
if (sub)
weston_subsurface_destroy(sub);
free(resource);
}
static void
subsurface_destroy(struct wl_client *client, struct wl_resource *resource)
{
wl_resource_destroy(resource);
}
static void
weston_subsurface_link_parent(struct weston_subsurface *sub,
struct weston_surface *parent)
{
sub->parent = parent;
sub->parent_destroy_listener.notify = subsurface_handle_parent_destroy;
wl_signal_add(&parent->resource.destroy_signal,
&sub->parent_destroy_listener);
wl_list_insert(&parent->subsurface_list, &sub->parent_link);
wl_list_insert(&parent->subsurface_list_pending,
&sub->parent_link_pending);
}
static void
weston_subsurface_link_surface(struct weston_subsurface *sub,
struct weston_surface *surface)
{
sub->surface = surface;
sub->surface_destroy_listener.notify =
subsurface_handle_surface_destroy;
wl_signal_add(&surface->resource.destroy_signal,
&sub->surface_destroy_listener);
}
static void
weston_subsurface_destroy(struct weston_subsurface *sub)
{
assert(sub->surface);
if (sub->resource) {
assert(weston_surface_to_subsurface(sub->surface) == sub);
assert(sub->parent_destroy_listener.notify ==
subsurface_handle_parent_destroy);
weston_surface_set_transform_parent(sub->surface, NULL);
if (sub->parent)
weston_subsurface_unlink_parent(sub);
weston_subsurface_cache_fini(sub);
sub->surface->configure = NULL;
sub->surface->configure_private = NULL;
} else {
/* the dummy weston_subsurface for the parent itself */
assert(sub->parent_destroy_listener.notify == NULL);
wl_list_remove(&sub->parent_link);
wl_list_remove(&sub->parent_link_pending);
}
wl_list_remove(&sub->surface_destroy_listener.link);
free(sub);
}
static const struct wl_subsurface_interface subsurface_implementation = {
subsurface_destroy,
subsurface_set_position,
subsurface_place_above,
subsurface_place_below,
subsurface_set_sync,
subsurface_set_desync
};
static struct weston_subsurface *
weston_subsurface_create(uint32_t id, struct weston_surface *surface,
struct weston_surface *parent)
{
struct weston_subsurface *sub;
sub = calloc(1, sizeof *sub);
if (!sub)
return NULL;
sub->resource = wl_client_add_object(surface->resource.client,
&wl_subsurface_interface,
&subsurface_implementation,
id, sub);
if (!sub->resource) {
free(sub);
return NULL;
}
sub->resource->destroy = subsurface_resource_destroy;
weston_subsurface_link_surface(sub, surface);
weston_subsurface_link_parent(sub, parent);
weston_subsurface_cache_init(sub);
sub->synchronized = 1;
weston_surface_set_transform_parent(surface, parent);
return sub;
}
/* Create a dummy subsurface for having the parent itself in its
* sub-surface lists. Makes stacking order manipulation easy.
*/
static struct weston_subsurface *
weston_subsurface_create_for_parent(struct weston_surface *parent)
{
struct weston_subsurface *sub;
sub = calloc(1, sizeof *sub);
if (!sub)
return NULL;
weston_subsurface_link_surface(sub, parent);
sub->parent = parent;
wl_list_insert(&parent->subsurface_list, &sub->parent_link);
wl_list_insert(&parent->subsurface_list_pending,
&sub->parent_link_pending);
return sub;
}
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 weston_surface *surface = surface_resource->data;
struct weston_surface *parent = parent_resource->data;
struct weston_subsurface *sub;
static const char where[] = "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",
where, id, surface_resource->object.id);
return;
}
if (weston_surface_to_subsurface(surface)) {
wl_resource_post_error(resource,
WL_SUBCOMPOSITOR_ERROR_BAD_SURFACE,
"%s%d: wl_surface@%d is already a sub-surface",
where, id, surface_resource->object.id);
return;
}
if (surface->configure) {
wl_resource_post_error(resource,
WL_SUBCOMPOSITOR_ERROR_BAD_SURFACE,
"%s%d: wl_surface@%d already has a role",
where, id, surface_resource->object.id);
return;
}
/* make sure the parent is in its own list */
if (wl_list_empty(&parent->subsurface_list)) {
if (!weston_subsurface_create_for_parent(parent)) {
wl_resource_post_no_memory(resource);
return;
}
}
sub = weston_subsurface_create(id, surface, parent);
if (!sub) {
wl_resource_post_no_memory(resource);
return;
}
surface->configure = subsurface_configure;
surface->configure_private = sub;
}
static void
subcompositor_destroy(struct wl_client *client, struct wl_resource *resource)
{
wl_resource_destroy(resource);
}
static const struct wl_subcompositor_interface subcompositor_interface = {
subcompositor_destroy,
subcompositor_get_subsurface
};
static void
bind_subcompositor(struct wl_client *client,
void *data, uint32_t version, uint32_t id)
{
struct weston_compositor *compositor = data;
wl_client_add_object(client, &wl_subcompositor_interface,
&subcompositor_interface, id, compositor);
}
static void
weston_compositor_dpms(struct weston_compositor *compositor,
enum dpms_enum state)
@ -2012,6 +2712,10 @@ weston_compositor_init(struct weston_compositor *ec,
ec, compositor_bind))
return -1;
if (!wl_display_add_global(display, &wl_subcompositor_interface,
ec, bind_subcompositor))
return -1;
wl_list_init(&ec->surface_list);
wl_list_init(&ec->plane_list);
wl_list_init(&ec->layer_list);

54
src/compositor.h
Unescape View File

@ -558,6 +558,53 @@ struct weston_region {
pixman_region32_t region;
};
struct weston_subsurface {
struct wl_resource *resource;
/* guaranteed to be valid and non-NULL */
struct weston_surface *surface;
struct wl_listener surface_destroy_listener;
/* can be NULL */
struct weston_surface *parent;
struct wl_listener parent_destroy_listener;
struct wl_list parent_link;
struct wl_list parent_link_pending;
struct {
int32_t x;
int32_t y;
int set;
} position;
struct {
int has_data;
/* wl_surface.attach */
int newly_attached;
struct weston_buffer_reference buffer_ref;
int32_t sx;
int32_t sy;
/* wl_surface.damage */
pixman_region32_t damage;
/* wl_surface.set_opaque_region */
pixman_region32_t opaque;
/* wl_surface.set_input_region */
pixman_region32_t input;
/* wl_surface.frame */
struct wl_list frame_callback_list;
/* wl_surface.set_buffer_transform */
uint32_t buffer_transform;
} cached;
int synchronized;
};
/* Using weston_surface transformations
*
* To add a transformation to a surface, create a struct weston_transform, and
@ -690,6 +737,13 @@ struct weston_surface {
*/
void (*configure)(struct weston_surface *es, int32_t sx, int32_t sy, int32_t width, int32_t height);
void *configure_private;
/* Parent's list of its sub-surfaces, weston_subsurface:parent_link.
* Contains also the parent itself as a dummy weston_subsurface,
* if the list is not empty.
*/
struct wl_list subsurface_list; /* weston_subsurface::parent_link */
struct wl_list subsurface_list_pending; /* ...::parent_link_pending */
};
enum weston_key_state_update {

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