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input: Don't send leave events to destroyed views 

If a view which has focus is destroyed, we would send a leave
event while changing focus, causing a segfault. Prevent this
by listening to the view's destroy signal and removing it from
the pointer focus.

Signed-off-by: Emilio Pozuelo Monfort <emilio.pozuelo@collabora.co.uk>
This commit is contained in:
Emilio Pozuelo Monfort 2013-11-19 11:37:15 +01:00 committed by Kristian Høgsberg
parent df8133b725
commit aa7a4761f6
2 changed files with 27 additions and 1 deletions
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1
src/compositor.h
View File

@ -308,6 +308,7 @@ struct weston_pointer {
struct wl_list focus_resource_list;
struct weston_view *focus;
uint32_t focus_serial;
struct wl_listener focus_listener;
struct wl_signal focus_signal;
struct wl_signal motion_signal;

27
src/input.c
View File

@ -395,8 +395,9 @@ weston_pointer_create(struct weston_seat *seat)
seat->compositor->default_pointer_grab);
pointer->default_grab.pointer = pointer;
pointer->grab = &pointer->default_grab;
wl_signal_init(&pointer->focus_signal);
wl_signal_init(&pointer->motion_signal);
wl_signal_init(&pointer->focus_signal);
wl_list_init(&pointer->focus_listener.link);
pointer->sprite_destroy_listener.notify = pointer_handle_sprite_destroy;
@ -503,6 +504,23 @@ seat_send_updated_caps(struct weston_seat *seat)
}
}
static void
destroy_pointer_focus(struct wl_listener *listener, void *data)
{
struct weston_pointer *pointer;
pointer = container_of(listener, struct weston_pointer,
focus_listener);
pointer->focus = NULL;
move_resources(&pointer->resource_list, &pointer->focus_resource_list);
wl_list_remove(&pointer->focus_listener.link);
wl_list_init(&pointer->focus_listener.link);
wl_signal_emit(&pointer->focus_signal, pointer);
}
WL_EXPORT void
weston_pointer_set_focus(struct weston_pointer *pointer,
struct weston_view *view,
@ -559,7 +577,14 @@ weston_pointer_set_focus(struct weston_pointer *pointer,
pointer->focus_serial = serial;
}
if (!wl_list_empty(&pointer->focus_listener.link)) {
wl_list_remove(&pointer->focus_listener.link);
wl_list_init(&pointer->focus_listener.link);
}
pointer->focus = view;
pointer->focus_listener.notify = destroy_pointer_focus;
if (view)
wl_signal_add(&view->destroy_signal, &pointer->focus_listener);
wl_signal_emit(&pointer->focus_signal, pointer);
}