mirror of
https://gitlab.freedesktop.org/wlroots/wlroots.git
synced 2024-11-22 15:12:26 +00:00
250 lines
7.3 KiB
C
250 lines
7.3 KiB
C
#include <assert.h>
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#include <libinput.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <wlr/backend/interface.h>
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#include <wlr/backend/session.h>
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#include <wlr/util/log.h>
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#include "backend/libinput.h"
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#include "util/env.h"
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static struct wlr_libinput_backend *get_libinput_backend_from_backend(
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struct wlr_backend *wlr_backend) {
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assert(wlr_backend_is_libinput(wlr_backend));
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return (struct wlr_libinput_backend *)wlr_backend;
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}
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static int libinput_open_restricted(const char *path,
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int flags, void *_backend) {
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struct wlr_libinput_backend *backend = _backend;
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struct wlr_device *dev = wlr_session_open_file(backend->session, path);
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if (dev == NULL) {
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return -1;
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}
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return dev->fd;
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}
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static void libinput_close_restricted(int fd, void *_backend) {
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struct wlr_libinput_backend *backend = _backend;
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struct wlr_device *dev;
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bool found = false;
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wl_list_for_each(dev, &backend->session->devices, link) {
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if (dev->fd == fd) {
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found = true;
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break;
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}
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}
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if (found) {
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wlr_session_close_file(backend->session, dev);
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}
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}
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static const struct libinput_interface libinput_impl = {
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.open_restricted = libinput_open_restricted,
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.close_restricted = libinput_close_restricted
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};
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static int handle_libinput_readable(int fd, uint32_t mask, void *_backend) {
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struct wlr_libinput_backend *backend = _backend;
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int ret = libinput_dispatch(backend->libinput_context);
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if (ret != 0) {
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wlr_log(WLR_ERROR, "Failed to dispatch libinput: %s", strerror(-ret));
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wl_display_terminate(backend->display);
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return 0;
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}
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struct libinput_event *event;
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while ((event = libinput_get_event(backend->libinput_context))) {
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handle_libinput_event(backend, event);
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libinput_event_destroy(event);
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}
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return 0;
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}
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static enum wlr_log_importance libinput_log_priority_to_wlr(
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enum libinput_log_priority priority) {
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switch (priority) {
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case LIBINPUT_LOG_PRIORITY_ERROR:
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return WLR_ERROR;
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case LIBINPUT_LOG_PRIORITY_INFO:
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return WLR_INFO;
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default:
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return WLR_DEBUG;
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}
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}
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static void log_libinput(struct libinput *libinput_context,
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enum libinput_log_priority priority, const char *fmt, va_list args) {
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enum wlr_log_importance importance = libinput_log_priority_to_wlr(priority);
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static char wlr_fmt[1024];
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snprintf(wlr_fmt, sizeof(wlr_fmt), "[libinput] %s", fmt);
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_wlr_vlog(importance, wlr_fmt, args);
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}
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static bool backend_start(struct wlr_backend *wlr_backend) {
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struct wlr_libinput_backend *backend =
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get_libinput_backend_from_backend(wlr_backend);
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wlr_log(WLR_DEBUG, "Starting libinput backend");
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backend->libinput_context = libinput_udev_create_context(&libinput_impl,
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backend, backend->session->udev);
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if (!backend->libinput_context) {
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wlr_log(WLR_ERROR, "Failed to create libinput context");
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return false;
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}
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if (libinput_udev_assign_seat(backend->libinput_context,
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backend->session->seat) != 0) {
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wlr_log(WLR_ERROR, "Failed to assign libinput seat");
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return false;
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}
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// TODO: More sophisticated logging
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libinput_log_set_handler(backend->libinput_context, log_libinput);
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libinput_log_set_priority(backend->libinput_context, LIBINPUT_LOG_PRIORITY_ERROR);
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int libinput_fd = libinput_get_fd(backend->libinput_context);
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if (!env_parse_bool("WLR_LIBINPUT_NO_DEVICES") && wl_list_empty(&backend->devices)) {
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handle_libinput_readable(libinput_fd, WL_EVENT_READABLE, backend);
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if (wl_list_empty(&backend->devices)) {
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wlr_log(WLR_ERROR, "libinput initialization failed, no input devices");
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wlr_log(WLR_ERROR, "Set WLR_LIBINPUT_NO_DEVICES=1 to suppress this check");
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return false;
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}
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}
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struct wl_event_loop *event_loop =
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wl_display_get_event_loop(backend->display);
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if (backend->input_event) {
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wl_event_source_remove(backend->input_event);
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}
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backend->input_event = wl_event_loop_add_fd(event_loop, libinput_fd,
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WL_EVENT_READABLE, handle_libinput_readable, backend);
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if (!backend->input_event) {
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wlr_log(WLR_ERROR, "Failed to create input event on event loop");
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return false;
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}
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wlr_log(WLR_DEBUG, "libinput successfully initialized");
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return true;
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}
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static void backend_destroy(struct wlr_backend *wlr_backend) {
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if (!wlr_backend) {
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return;
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}
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struct wlr_libinput_backend *backend =
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get_libinput_backend_from_backend(wlr_backend);
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struct wlr_libinput_input_device *dev, *tmp;
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wl_list_for_each_safe(dev, tmp, &backend->devices, link) {
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destroy_libinput_input_device(dev);
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}
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wlr_backend_finish(wlr_backend);
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wl_list_remove(&backend->display_destroy.link);
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wl_list_remove(&backend->session_destroy.link);
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wl_list_remove(&backend->session_signal.link);
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if (backend->input_event) {
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wl_event_source_remove(backend->input_event);
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}
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libinput_unref(backend->libinput_context);
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free(backend);
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}
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static const struct wlr_backend_impl backend_impl = {
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.start = backend_start,
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.destroy = backend_destroy,
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};
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bool wlr_backend_is_libinput(struct wlr_backend *b) {
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return b->impl == &backend_impl;
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}
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static void session_signal(struct wl_listener *listener, void *data) {
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struct wlr_libinput_backend *backend =
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wl_container_of(listener, backend, session_signal);
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struct wlr_session *session = backend->session;
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if (!backend->libinput_context) {
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return;
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}
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if (session->active) {
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libinput_resume(backend->libinput_context);
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} else {
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libinput_suspend(backend->libinput_context);
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}
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}
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static void handle_session_destroy(struct wl_listener *listener, void *data) {
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struct wlr_libinput_backend *backend =
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wl_container_of(listener, backend, session_destroy);
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backend_destroy(&backend->backend);
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}
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static void handle_display_destroy(struct wl_listener *listener, void *data) {
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struct wlr_libinput_backend *backend =
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wl_container_of(listener, backend, display_destroy);
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backend_destroy(&backend->backend);
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}
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struct wlr_backend *wlr_libinput_backend_create(struct wl_display *display,
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struct wlr_session *session) {
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struct wlr_libinput_backend *backend =
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calloc(1, sizeof(struct wlr_libinput_backend));
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if (!backend) {
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wlr_log(WLR_ERROR, "Allocation failed: %s", strerror(errno));
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return NULL;
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}
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wlr_backend_init(&backend->backend, &backend_impl);
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wl_list_init(&backend->devices);
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backend->session = session;
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backend->display = display;
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backend->session_signal.notify = session_signal;
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wl_signal_add(&session->events.active, &backend->session_signal);
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backend->session_destroy.notify = handle_session_destroy;
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wl_signal_add(&session->events.destroy, &backend->session_destroy);
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backend->display_destroy.notify = handle_display_destroy;
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wl_display_add_destroy_listener(display, &backend->display_destroy);
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return &backend->backend;
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}
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struct libinput_device *wlr_libinput_get_device_handle(
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struct wlr_input_device *wlr_dev) {
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struct wlr_libinput_input_device *dev = NULL;
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switch (wlr_dev->type) {
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case WLR_INPUT_DEVICE_KEYBOARD:
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dev = device_from_keyboard(wlr_keyboard_from_input_device(wlr_dev));
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break;
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case WLR_INPUT_DEVICE_POINTER:
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dev = device_from_pointer(wlr_pointer_from_input_device(wlr_dev));
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break;
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case WLR_INPUT_DEVICE_SWITCH:
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dev = device_from_switch(wlr_switch_from_input_device(wlr_dev));
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break;
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case WLR_INPUT_DEVICE_TOUCH:
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dev = device_from_touch(wlr_touch_from_input_device(wlr_dev));
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break;
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case WLR_INPUT_DEVICE_TABLET_TOOL:
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dev = device_from_tablet(wlr_tablet_from_input_device(wlr_dev));
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break;
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case WLR_INPUT_DEVICE_TABLET_PAD:
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dev = device_from_tablet_pad(wlr_tablet_pad_from_input_device(wlr_dev));
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break;
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}
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return dev->handle;
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}
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uint32_t usec_to_msec(uint64_t usec) {
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return (uint32_t)(usec / 1000);
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}
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