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Add fallback output

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This commit is contained in:
Simon Long 2024-02-12 07:40:47 +00:00
parent 551feaca0a
commit 97906cb6a2
2 changed files with 38 additions and 0 deletions
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3
include/labwc.h
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@ -337,6 +337,9 @@ struct server {
struct menu *menu_current; struct menu *menu_current;
struct wl_list menus; struct wl_list menus;
struct wl_event_source *destroy_timeout;
bool fallback_output;
}; };
#define LAB_NR_LAYERS (4) #define LAB_NR_LAYERS (4)

35
src/output.c
View file

@ -141,6 +141,10 @@ output_destroy_notify(struct wl_listener *listener, void *data)
* destroyed automatically when the wlr_output is destroyed * destroyed automatically when the wlr_output is destroyed
*/ */
free(output); free(output);
if (server->fallback_output && wl_list_length(&server->outputs) == 0) {
output_add_virtual(server, "HEADLESS");
}
} }
static void static void
@ -191,6 +195,16 @@ add_output_to_layout(struct server *server, struct output *output)
} }
} }
static int
handle_virtual_output_destroy_timeout(void *data)
{
struct server *server = data;
output_remove_virtual(server, "HEADLESS");
wl_event_source_remove(server->destroy_timeout);
server->destroy_timeout = NULL;
return 0;
}
static void static void
new_output_notify(struct wl_listener *listener, void *data) new_output_notify(struct wl_listener *listener, void *data)
{ {
@ -354,6 +368,19 @@ new_output_notify(struct wl_listener *listener, void *data)
server->pending_output_layout_change--; server->pending_output_layout_change--;
do_output_layout_change(server); do_output_layout_change(server);
seat_output_layout_changed(&output->server->seat); seat_output_layout_changed(&output->server->seat);
if (server->fallback_output && wl_list_length(&server->outputs) > 1) {
/* libwayland has a bug when a global is created and
* immediately destroyed, as clients don't have enough time
* to bind it, so the virtual output is destroyed on a timer.
*/
if (!server->destroy_timeout) {
server->destroy_timeout =
wl_event_loop_add_timer(server->wl_event_loop,
handle_virtual_output_destroy_timeout, server);
}
wl_event_source_timer_update(server->destroy_timeout, 1000);
}
} }
void void
@ -388,6 +415,14 @@ output_init(struct server *server)
wl_list_init(&server->outputs); wl_list_init(&server->outputs);
output_manager_init(server); output_manager_init(server);
if (getenv("LABWC_FALLBACK_OUTPUT")) {
output_add_virtual(server, "HEADLESS");
server->destroy_timeout = NULL;
server->fallback_output = true;
} else {
server->fallback_output = false;
}
} }
static void static void