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backend/wayland: take existing wl_display in wlr_wl_backend_create()

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This allows compositors to use an existing wl_display, to integrate
wlroots with an existing toolkit.
This commit is contained in:
Simon Ser 2023-06-07 14:15:44 +02:00
parent 664ec59095
commit dd24991c9e
3 changed files with 20 additions and 11 deletions
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23
backend/wayland/backend.c
View file

@ -529,7 +529,9 @@ static void backend_destroy(struct wlr_backend *backend) {
wl_compositor_destroy(wl->compositor);
wl_registry_destroy(wl->registry);
wl_display_flush(wl->remote_display);
wl_display_disconnect(wl->remote_display);
if (wl->own_remote_display) {
wl_display_disconnect(wl->remote_display);
}
free(wl);
}
@ -568,7 +570,7 @@ static void handle_display_destroy(struct wl_listener *listener, void *data) {
}
struct wlr_backend *wlr_wl_backend_create(struct wl_display *display,
const char *remote) {
struct wl_display *remote_display) {
wlr_log(WLR_INFO, "Creating wayland backend");
struct wlr_wl_backend *wl = calloc(1, sizeof(*wl));
@ -585,10 +587,15 @@ struct wlr_backend *wlr_wl_backend_create(struct wl_display *display,
wl_list_init(&wl->buffers);
wl->presentation_clock = CLOCK_MONOTONIC;
wl->remote_display = wl_display_connect(remote);
if (!wl->remote_display) {
wlr_log_errno(WLR_ERROR, "Could not connect to remote display");
goto error_wl;
if (remote_display != NULL) {
wl->remote_display = remote_display;
} else {
wl->remote_display = wl_display_connect(NULL);
if (!wl->remote_display) {
wlr_log_errno(WLR_ERROR, "Could not connect to remote display");
goto error_wl;
}
wl->own_remote_display = true;
}
wl->registry = wl_display_get_registry(wl->remote_display);
@ -685,7 +692,9 @@ error_registry:
}
wl_registry_destroy(wl->registry);
error_display:
wl_display_disconnect(wl->remote_display);
if (wl->own_remote_display) {
wl_display_disconnect(wl->remote_display);
}
error_wl:
wlr_backend_finish(&wl->backend);
free(wl);

1
include/backend/wayland.h
View file

@ -30,6 +30,7 @@ struct wlr_wl_backend {
/* remote state */
struct wl_display *remote_display;
bool own_remote_display;
struct wl_event_source *remote_display_src;
struct wl_registry *registry;
struct wl_compositor *compositor;

7
include/wlr/backend/wayland.h
View file

@ -12,12 +12,11 @@ struct wlr_input_device;
* Creates a new Wayland backend. This backend will be created with no outputs;
* you must use wlr_wl_output_create() to add them.
*
* The `remote` argument is the name of the host compositor wayland socket. Set
* to NULL for the default behaviour (WAYLAND_DISPLAY env variable or wayland-0
* default).
* The remote_display argument is an existing libwayland-client struct wl_display
* to use. Leave it NULL to create a new connection to the compositor.
*/
struct wlr_backend *wlr_wl_backend_create(struct wl_display *display,
const char *remote);
struct wl_display *remote_display);
/**
* Returns the remote struct wl_display used by the Wayland backend.