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wayland/subsurface: Hook up sub-surface placement ops in callers

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wl_subsurface_place_above/below need to hook it up to the parent
surface's pending state, so that it gets picked up next time the parent
is committed.

v2:
* Adapt to wl_subsurface_destructor not resetting sub-surface position

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3364>
This commit is contained in:
Michel Dänzer 2023-11-03 16:10:19 +01:00 committed by Marge Bot
parent 6718e267fb
commit a2863fc1ea
1 changed files with 71 additions and 54 deletions
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125
src/wayland/meta-wayland-subsurface.c
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@ -306,24 +306,16 @@ is_valid_sibling (MetaWaylandSurface *surface,
return FALSE;
}
static void
queue_subsurface_placement (MetaWaylandSurface *surface,
MetaWaylandSurface *sibling,
MetaWaylandSubsurfacePlacement placement)
static MetaWaylandSubsurfacePlacementOp *
get_subsurface_placement_op (MetaWaylandSurface *surface,
MetaWaylandSurface *sibling,
MetaWaylandSubsurfacePlacement placement)
{
MetaWaylandSurface *parent = surface->protocol_state.parent;
gboolean have_synced_parent;
MetaWaylandTransaction *transaction;
MetaWaylandSubsurfacePlacementOp *op =
g_new0 (MetaWaylandSubsurfacePlacementOp, 1);
GNode *sibling_node;
have_synced_parent = sibling && meta_wayland_surface_is_synchronized (parent);
if (have_synced_parent)
transaction = meta_wayland_surface_ensure_transaction (parent);
else
transaction = meta_wayland_transaction_new (surface->compositor);
op->placement = placement;
op->sibling = sibling;
op->surface = surface;
@ -331,7 +323,7 @@ queue_subsurface_placement (MetaWaylandSurface *surface,
g_node_unlink (surface->protocol_state.subsurface_branch_node);
if (!sibling)
goto out;
return op;
if (sibling == parent)
sibling_node = parent->protocol_state.subsurface_leaf_node;
@ -352,11 +344,39 @@ queue_subsurface_placement (MetaWaylandSurface *surface,
break;
}
out:
meta_wayland_transaction_add_placement_op (transaction, parent, op);
return op;
}
if (!have_synced_parent)
meta_wayland_transaction_commit (transaction);
static void
subsurface_place (struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *sibling_resource,
MetaWaylandSubsurfacePlacement placement)
{
MetaWaylandSurface *surface = wl_resource_get_user_data (resource);
MetaWaylandSurface *sibling = wl_resource_get_user_data (sibling_resource);
MetaWaylandSurfaceState *pending_state;
MetaWaylandSubsurfacePlacementOp *op;
if (!is_valid_sibling (surface, sibling))
{
wl_resource_post_error (resource, WL_SUBSURFACE_ERROR_BAD_SURFACE,
"wl_subsurface::place_%s: wl_surface@%d is "
"not a valid parent or sibling",
placement == META_WAYLAND_SUBSURFACE_PLACEMENT_ABOVE ?
"above" : "below",
wl_resource_get_id (sibling->resource));
return;
}
op = get_subsurface_placement_op (surface,
sibling,
placement);
pending_state =
meta_wayland_surface_get_pending_state (surface->protocol_state.parent);
pending_state->subsurface_placement_ops =
g_slist_append (pending_state->subsurface_placement_ops, op);
}
static void
@ -364,21 +384,8 @@ wl_subsurface_place_above (struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *sibling_resource)
{
MetaWaylandSurface *surface = wl_resource_get_user_data (resource);
MetaWaylandSurface *sibling = wl_resource_get_user_data (sibling_resource);
if (!is_valid_sibling (surface, sibling))
{
wl_resource_post_error (resource, WL_SUBSURFACE_ERROR_BAD_SURFACE,
"wl_subsurface::place_above: wl_surface@%d is "
"not a valid parent or sibling",
wl_resource_get_id (sibling->resource));
return;
}
queue_subsurface_placement (surface,
sibling,
META_WAYLAND_SUBSURFACE_PLACEMENT_ABOVE);
subsurface_place (client, resource, sibling_resource,
META_WAYLAND_SUBSURFACE_PLACEMENT_ABOVE);
}
static void
@ -386,32 +393,28 @@ wl_subsurface_place_below (struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *sibling_resource)
{
MetaWaylandSurface *surface = wl_resource_get_user_data (resource);
MetaWaylandSurface *sibling = wl_resource_get_user_data (sibling_resource);
if (!is_valid_sibling (surface, sibling))
{
wl_resource_post_error (resource, WL_SUBSURFACE_ERROR_BAD_SURFACE,
"wl_subsurface::place_below: wl_surface@%d is "
"not a valid parent or sibling",
wl_resource_get_id (sibling->resource));
return;
}
queue_subsurface_placement (surface,
sibling,
META_WAYLAND_SUBSURFACE_PLACEMENT_BELOW);
subsurface_place (client, resource, sibling_resource,
META_WAYLAND_SUBSURFACE_PLACEMENT_BELOW);
}
static void
wl_subsurface_destructor (struct wl_resource *resource)
{
MetaWaylandSurface *surface = wl_resource_get_user_data (resource);
MetaWaylandSurface *parent = surface->protocol_state.parent;
if (surface->protocol_state.parent)
if (parent)
{
queue_subsurface_placement (surface, NULL,
META_WAYLAND_SUBSURFACE_PLACEMENT_BELOW);
MetaWaylandSubsurfacePlacementOp *op;
MetaWaylandTransaction *transaction;
op = get_subsurface_placement_op (surface, NULL,
META_WAYLAND_SUBSURFACE_PLACEMENT_BELOW);
transaction = meta_wayland_transaction_new (surface->compositor);
meta_wayland_transaction_add_placement_op (transaction, parent, op);
meta_wayland_transaction_commit (transaction);
surface->protocol_state.parent = NULL;
}
else
@ -481,8 +484,16 @@ wl_subcompositor_destroy (struct wl_client *client,
void
meta_wayland_subsurface_parent_destroyed (MetaWaylandSurface *surface)
{
queue_subsurface_placement (surface, NULL,
META_WAYLAND_SUBSURFACE_PLACEMENT_BELOW);
MetaWaylandSurface *parent = surface->protocol_state.parent;
MetaWaylandTransaction *transaction;
MetaWaylandSubsurfacePlacementOp *op;
transaction = meta_wayland_transaction_new (surface->compositor);
op = get_subsurface_placement_op (surface, NULL,
META_WAYLAND_SUBSURFACE_PLACEMENT_BELOW);
meta_wayland_transaction_add_placement_op (transaction, parent, op);
meta_wayland_transaction_commit (transaction);
surface->protocol_state.parent = NULL;
}
@ -506,6 +517,8 @@ wl_subcompositor_get_subsurface (struct wl_client *client,
{
MetaWaylandSurface *surface = wl_resource_get_user_data (surface_resource);
MetaWaylandSurface *parent = wl_resource_get_user_data (parent_resource);
MetaWaylandSurfaceState *pending_state;
MetaWaylandSubsurfacePlacementOp *op;
MetaWaylandSurface *reference;
MetaWindow *toplevel_window;
@ -559,8 +572,12 @@ wl_subcompositor_get_subsurface (struct wl_client *client,
reference =
g_node_last_child (parent->protocol_state.subsurface_branch_node)->data;
queue_subsurface_placement (surface, reference,
META_WAYLAND_SUBSURFACE_PLACEMENT_ABOVE);
op = get_subsurface_placement_op (surface, reference,
META_WAYLAND_SUBSURFACE_PLACEMENT_ABOVE);
pending_state = meta_wayland_surface_get_pending_state (parent);
pending_state->subsurface_placement_ops =
g_slist_append (pending_state->subsurface_placement_ops, op);
}
static const struct wl_subcompositor_interface meta_wayland_subcompositor_interface = {