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wayland: Rework how surface destruction works

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To prevent the MetaSurfaceActor from being destroyed, we normally
unparent it before we unmanage the window. However, this doesn't
work for XWayland windows, which we unmanage when we get UnmapNotify
or DestroyNotify, not when we get the wl_surface_destroy.

To solve this, add an early hook in meta_window_unmanage that
unparents the surface actor if we have one. At the same time, clean
up the destruction code to remove old comments and assumptions about
how wl_shell behaves.
This commit is contained in:
Jasper St. Pierre 2014-02-18 16:39:23 -05:00
parent 57728b4322
commit 2a145262c7
3 changed files with 45 additions and 52 deletions
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3
src/core/window.c
View File

@ -1498,6 +1498,9 @@ meta_window_unmanage (MetaWindow *window,
meta_verbose ("Unmanaging 0x%lx\n", window->xwindow);
if (window->surface)
meta_wayland_surface_window_unmanaged (window->surface);
if (window->client_type == META_WINDOW_CLIENT_TYPE_WAYLAND)
{
MetaStackWindow stack_window;

91
src/wayland/meta-wayland-surface.c
View File

@ -574,10 +574,48 @@ const struct wl_surface_interface meta_wayland_surface_interface = {
};
static void
meta_wayland_surface_free (MetaWaylandSurface *surface)
unparent_actor (MetaWaylandSurface *surface)
{
ClutterActor *parent_actor;
parent_actor = clutter_actor_get_parent (CLUTTER_ACTOR (surface->surface_actor));
clutter_actor_remove_child (parent_actor, CLUTTER_ACTOR (surface->surface_actor));
}
void
meta_wayland_surface_window_unmanaged (MetaWaylandSurface *surface)
{
/* The window is being unmanaged. Unparent our surface actor
* before the window actor is destroyed, as we need to hold
* onto it... */
unparent_actor (surface);
surface->window = NULL;
}
static void
destroy_window (MetaWaylandSurface *surface)
{
MetaDisplay *display = meta_get_display ();
guint32 timestamp = meta_display_get_current_time_roundtrip (display);
g_assert (surface->window != NULL);
meta_window_unmanage (surface->window, timestamp);
g_assert (surface->window == NULL);
}
static void
wl_surface_destructor (struct wl_resource *resource)
{
MetaWaylandSurface *surface = wl_resource_get_user_data (resource);
MetaWaylandCompositor *compositor = surface->compositor;
/* At the time when the wl_surface is destroyed, we should
* no longer have a window, unless we're an XWayland window
* in which case we received the wl_surface.destroy before
* the UnmapNotify/DestroyNotify. */
g_assert (surface->window == NULL || surface->window->client_type == META_WINDOW_CLIENT_TYPE_X11);
compositor->surfaces = g_list_remove (compositor->surfaces, surface);
surface_set_buffer (surface, NULL);
@ -590,57 +628,6 @@ meta_wayland_surface_free (MetaWaylandSurface *surface)
meta_wayland_compositor_repick (compositor);
}
static void
unparent_actor (MetaWaylandSurface *surface)
{
ClutterActor *parent_actor;
parent_actor = clutter_actor_get_parent (CLUTTER_ACTOR (surface->surface_actor));
clutter_actor_remove_child (parent_actor, CLUTTER_ACTOR (surface->surface_actor));
}
static void
destroy_window (MetaWaylandSurface *surface)
{
MetaDisplay *display = meta_get_display ();
guint32 timestamp = meta_display_get_current_time_roundtrip (display);
/* Remove our actor from the parent, so it doesn't get destroyed when
* the MetaWindowActor is destroyed. */
unparent_actor (surface);
g_assert (surface->window != NULL);
meta_window_unmanage (surface->window, timestamp);
surface->window = NULL;
}
static void
wl_surface_destructor (struct wl_resource *resource)
{
MetaWaylandSurface *surface = wl_resource_get_user_data (resource);
/* There are four cases here:
- An X11 unmanaged window -> surface is NULL, nothing to do
- An X11 unmanaged window, but we got the wayland event first ->
just clear the resource pointer
- A wayland surface without window (destroyed before set_toplevel) ->
need to free the surface itself
- A wayland window -> need to unmanage
*/
if (surface)
{
surface->resource = NULL;
/* NB: If the surface corresponds to an X window then we will be
* sure to free the MetaWindow according to some X event. */
if (surface->window && surface->window->client_type == META_WINDOW_CLIENT_TYPE_WAYLAND)
destroy_window (surface);
meta_wayland_surface_free (surface);
}
}
MetaWaylandSurface *
meta_wayland_surface_create (MetaWaylandCompositor *compositor,
struct wl_client *client,

3
src/wayland/meta-wayland-surface.h
View File

@ -118,6 +118,9 @@ MetaWaylandSurface *meta_wayland_surface_create (MetaWaylandCompositor *composit
struct wl_client *client,
guint32 id,
guint32 version);
void meta_wayland_surface_window_unmanaged (MetaWaylandSurface *surface);
void meta_wayland_surface_configure_notify (MetaWaylandSurface *surface,
int width,
int height);