mirror of
https://gitlab.freedesktop.org/wlroots/wlroots.git
synced 2024-11-22 15:12:26 +00:00
9b4be5a595
The noop backend is similar to headless, but it doesn't contain a renderer. It can be used as a place to stash views for when there's no physical outputs connected.
69 lines
1.8 KiB
C
69 lines
1.8 KiB
C
#include <assert.h>
|
|
#include <stdlib.h>
|
|
#include <wlr/interfaces/wlr_output.h>
|
|
#include <wlr/util/log.h>
|
|
#include "backend/noop.h"
|
|
#include "util/signal.h"
|
|
|
|
struct wlr_noop_backend *noop_backend_from_backend(
|
|
struct wlr_backend *wlr_backend) {
|
|
assert(wlr_backend_is_noop(wlr_backend));
|
|
return (struct wlr_noop_backend *)wlr_backend;
|
|
}
|
|
|
|
static bool backend_start(struct wlr_backend *wlr_backend) {
|
|
struct wlr_noop_backend *backend = noop_backend_from_backend(wlr_backend);
|
|
wlr_log(WLR_INFO, "Starting noop backend");
|
|
|
|
struct wlr_noop_output *output;
|
|
wl_list_for_each(output, &backend->outputs, link) {
|
|
wlr_output_update_enabled(&output->wlr_output, true);
|
|
wlr_signal_emit_safe(&backend->backend.events.new_output,
|
|
&output->wlr_output);
|
|
}
|
|
|
|
backend->started = true;
|
|
return true;
|
|
}
|
|
|
|
static void backend_destroy(struct wlr_backend *wlr_backend) {
|
|
struct wlr_noop_backend *backend = noop_backend_from_backend(wlr_backend);
|
|
if (!wlr_backend) {
|
|
return;
|
|
}
|
|
|
|
struct wlr_noop_output *output, *output_tmp;
|
|
wl_list_for_each_safe(output, output_tmp, &backend->outputs, link) {
|
|
wlr_output_destroy(&output->wlr_output);
|
|
}
|
|
|
|
wlr_signal_emit_safe(&wlr_backend->events.destroy, backend);
|
|
|
|
free(backend);
|
|
}
|
|
|
|
static const struct wlr_backend_impl backend_impl = {
|
|
.start = backend_start,
|
|
.destroy = backend_destroy,
|
|
};
|
|
|
|
struct wlr_backend *wlr_noop_backend_create(struct wl_display *display) {
|
|
wlr_log(WLR_INFO, "Creating noop backend");
|
|
|
|
struct wlr_noop_backend *backend =
|
|
calloc(1, sizeof(struct wlr_noop_backend));
|
|
if (!backend) {
|
|
wlr_log(WLR_ERROR, "Failed to allocate wlr_noop_backend");
|
|
return NULL;
|
|
}
|
|
wlr_backend_init(&backend->backend, &backend_impl);
|
|
backend->display = display;
|
|
wl_list_init(&backend->outputs);
|
|
|
|
return &backend->backend;
|
|
}
|
|
|
|
bool wlr_backend_is_noop(struct wlr_backend *backend) {
|
|
return backend->impl == &backend_impl;
|
|
}
|