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#include <stdlib.h>
#include <stdint.h>
#include <wayland-server.h>
#include <assert.h>
#include <wlr/backend/interface.h>
#include "backend/wayland.h"
#include "common/log.h"
/*
* Initializes the wayland backend. Opens a connection to a remote wayland
* compositor and creates surfaces for each output, then registers globals on
* the specified display.
*/
static bool wlr_wl_backend_init(struct wlr_backend_state* state) {
state->remote_display = wl_display_connect(getenv("_WAYLAND_DISPLAY"));
if (!state->remote_display) {
wlr_log(L_ERROR, "Could not connect to remote display");
return false;
}
if (!(state->registry = wl_display_get_registry(state->remote_display))) {
wlr_log(L_ERROR, "Could not obtain reference to remote registry");
return false;
}
wlr_wlb_registry_poll(state);
return true;
}
static void wlr_wl_backend_destroy(struct wlr_backend_state *state) {
if (!state) {
return;
}
// TODO: Free surfaces
for (size_t i = 0; state->outputs && i < state->outputs->length; ++i) {
struct wlr_wl_output *output = state->outputs->items[i];
wlr_wl_output_free(output);
}
list_free(state->outputs);
if (state->seat) wlr_wl_seat_free(state->seat);
if (state->shm) wl_shm_destroy(state->shm);
if (state->shell) wl_shell_destroy(state->shell);
if (state->compositor) wl_compositor_destroy(state->compositor);
if (state->registry) wl_registry_destroy(state->registry);
if (state->remote_display) wl_display_disconnect(state->remote_display);
free(state);
}
static struct wlr_backend_impl backend_impl = {
.init = wlr_wl_backend_init,
.destroy = wlr_wl_backend_destroy
};
struct wlr_backend *wlr_wl_backend_create(struct wl_display *display,
size_t outputs) {
wlr_log(L_INFO, "Initalizing wayland backend");
struct wlr_backend_state *state = calloc(1, sizeof(struct wlr_backend_state));
if (!state) {
wlr_log(L_ERROR, "Allocation failed: %s", strerror(errno));
return NULL;
}
struct wlr_backend *backend = wlr_backend_create(&backend_impl, state);
if (!backend) {
wlr_log(L_ERROR, "Allocation failed: %s", strerror(errno));
return NULL;
}
if (!(state->outputs = list_create())) {
wlr_log(L_ERROR, "Could not allocate output list");
goto error;
}
state->local_display = display;
return backend;
error:
free(state);
free(backend);
return NULL;
}
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