--- /dev/null
+#ifndef LIBDS_INTERFACES_KEYBOARD_H
+#define LIBDS_INTERFACES_KEYBOARD_H
+
+#include <wayland-server.h>
+#include <xkbcommon/xkbcommon.h>
+
+#include <libds/keyboard.h>
+
+#define DS_LED_COUNT 3
+
+enum ds_keyboard_led {
+ DS_LED_NUM_LOCK = 1 << 0,
+ DS_LED_CAPS_LOCK = 1 << 1,
+ DS_LED_SCROLL_LOCK = 1 << 2,
+};
+
+#define DS_MODIFIER_COUNT 8
+
+enum ds_keyboard_modifier {
+ DS_MODIFIER_SHIFT = 1 << 0,
+ DS_MODIFIER_CAPS = 1 << 1,
+ DS_MODIFIER_CTRL = 1 << 2,
+ DS_MODIFIER_ALT = 1 << 3,
+ DS_MODIFIER_MOD2 = 1 << 4,
+ DS_MODIFIER_MOD3 = 1 << 5,
+ DS_MODIFIER_LOGO = 1 << 6,
+ DS_MODIFIER_MOD5 = 1 << 7,
+};
+
+#define DS_KEYBOARD_KEYS_CAP 32
+
+struct ds_keyboard;
+
+struct ds_keyboard_interface
+{
+ void (*destroy)(struct ds_keyboard *keyboard);
+};
+
+struct ds_keyboard_modifiers
+{
+ xkb_mod_mask_t depressed;
+ xkb_mod_mask_t latched;
+ xkb_mod_mask_t locked;
+ xkb_mod_mask_t group;
+};
+
+struct ds_keyboard
+{
+ const struct ds_keyboard_interface *iface;
+
+ char *keymap_string;
+ size_t keymap_size;
+ int keymap_fd;
+ struct xkb_keymap *keymap;
+ struct xkb_state *xkb_state;
+ xkb_led_index_t led_indexes[DS_LED_COUNT];
+ xkb_mod_index_t mod_indexes[DS_MODIFIER_COUNT];
+
+ uint32_t keycodes[DS_KEYBOARD_KEYS_CAP];
+ size_t num_keycodes;
+ struct ds_keyboard_modifiers modifiers;
+
+ struct {
+ int32_t rate;
+ int32_t delay;
+ } repeat_info;
+
+ struct {
+ struct wl_signal destroy;
+ struct wl_signal key;
+ struct wl_signal modifiers;
+ struct wl_signal keymap;
+ struct wl_signal repeat_info;
+ } events;
+};
+
+void ds_keyboard_init(struct ds_keyboard *keyboard,
+ const struct ds_keyboard_interface *iface);
+
+void ds_keyboard_destroy(struct ds_keyboard *keyboard);
+
+void ds_keyboard_notify_key(struct ds_keyboard *keyboard,
+ struct ds_event_keyboard_key *event);
+
+void ds_keyboard_notify_modifiers(struct ds_keyboard *keyboard,
+ uint32_t mods_depressed, uint32_t mods_latched, uint32_t mods_locked,
+ uint32_t group);
+
+#endif
--- /dev/null
+#include <stdbool.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/mman.h>
+
+#include <wayland-server.h>
+
+#include "libds/log.h"
+#include "libds/interfaces/keyboard.h"
+#include "util.h"
+
+static bool keyboard_modifier_update(struct ds_keyboard *keyboard);
+static void keyboard_key_update(struct ds_keyboard *keyboard,
+ struct ds_event_keyboard_key *event);
+static void keyboard_led_update(struct ds_keyboard *keyboard);
+
+WL_EXPORT bool
+ds_keyboard_set_keymap(struct ds_keyboard *keyboard, struct xkb_keymap *keymap)
+{
+ char *tmp_keymap_string;
+ void *dst;
+ int rw_fd, ro_fd;
+ xkb_keycode_t keycode;
+ const char *led_names[DS_LED_COUNT] = {
+ XKB_LED_NAME_NUM,
+ XKB_LED_NAME_CAPS,
+ XKB_LED_NAME_SCROLL,
+ };
+ const char *mod_names[DS_MODIFIER_COUNT] = {
+ XKB_MOD_NAME_SHIFT,
+ XKB_MOD_NAME_CAPS,
+ XKB_MOD_NAME_CTRL,
+ XKB_MOD_NAME_ALT,
+ XKB_MOD_NAME_NUM,
+ "Mod3",
+ XKB_MOD_NAME_LOGO,
+ "Mod5",
+ };
+
+ if (keyboard->keymap)
+ xkb_keymap_unref(keyboard->keymap);
+
+ keyboard->keymap = xkb_keymap_ref(keymap);
+
+ if (keyboard->xkb_state)
+ xkb_state_unref(keyboard->xkb_state);
+
+ keyboard->xkb_state = xkb_state_new(keyboard->keymap);
+ if (!keyboard->xkb_state) {
+ ds_err("Failed to create XKB state");
+ goto err_state;
+ }
+
+ for (size_t i = 0; i < DS_LED_COUNT; i++) {
+ keyboard->led_indexes[i] =
+ xkb_map_led_get_index(keyboard->keymap, led_names[i]);
+ }
+
+ for (size_t i = 0; i < DS_MODIFIER_COUNT; i++) {
+ keyboard->mod_indexes[i] =
+ xkb_map_mod_get_index(keyboard->keymap, mod_names[i]);
+ }
+
+ tmp_keymap_string = xkb_keymap_get_as_string(keyboard->keymap,
+ XKB_KEYMAP_FORMAT_TEXT_V1);
+ if (!tmp_keymap_string) {
+ ds_err("Failed to get string version of keymap");
+ goto err_keymap_string;
+ }
+
+ if (keyboard->keymap_string)
+ free(keyboard->keymap_string);
+ keyboard->keymap_string = tmp_keymap_string;
+ keyboard->keymap_size = strlen(keyboard->keymap_string) + 1;
+
+ if (!allocate_shm_file_pair(keyboard->keymap_size, &rw_fd, &ro_fd)) {
+ ds_err("Failed to allocate shm_file for keymap");
+ goto err_shm_file;
+ }
+
+ dst = mmap(NULL, keyboard->keymap_size, PROT_READ | PROT_WRITE,
+ MAP_SHARED, rw_fd, 0);
+ if (dst == MAP_FAILED) {
+ ds_log_errno(DS_ERR, "mmap failed");
+ goto err_mmap;
+ }
+
+ memcpy(dst, keyboard->keymap_string, keyboard->keymap_size);
+ munmap(dst, keyboard->keymap_size);
+ close(rw_fd);
+
+ if (keyboard->keymap_fd >= 0)
+ close(keyboard->keymap_fd);
+ keyboard->keymap_fd = ro_fd;
+
+ for (size_t i = 0; i < keyboard->num_keycodes; i++) {
+ keycode = keyboard->keycodes[i] + 8;
+ xkb_state_update_key(keyboard->xkb_state, keycode, XKB_KEY_DOWN);
+ }
+
+ keyboard_modifier_update(keyboard);
+
+ wl_signal_emit(&keyboard->events.keymap, keyboard);
+
+ return true;
+
+err_mmap:
+ close(rw_fd);
+ close(ro_fd);
+err_shm_file:
+ free(keyboard->keymap_string);
+ keyboard->keymap_string = NULL;
+err_keymap_string:
+ xkb_state_unref(keyboard->xkb_state);
+ keyboard->xkb_state = NULL;
+err_state:
+ xkb_keymap_unref(keymap);
+ keyboard->keymap = NULL;
+
+ return false;
+}
+
+WL_EXPORT void
+ds_keyboard_set_repeat_info(struct ds_keyboard *keyboard,
+ int32_t rate, int32_t delay)
+{
+ if (keyboard->repeat_info.rate == rate &&
+ keyboard->repeat_info.delay == delay)
+ return;
+ keyboard->repeat_info.rate = rate;
+ keyboard->repeat_info.delay = delay;
+
+ wl_signal_emit(&keyboard->events.repeat_info, keyboard);
+}
+
+WL_EXPORT uint32_t
+ds_keyboard_get_modifiers(struct ds_keyboard *keyboard)
+{
+ xkb_mod_mask_t mask;
+ uint32_t modifiers = 0;
+
+ mask = keyboard->modifiers.depressed | keyboard->modifiers.latched;
+ for (size_t i = 0; i < DS_MODIFIER_COUNT; i++) {
+ if (keyboard->mod_indexes[i] != XKB_MOD_INVALID &&
+ (mask & (1 << keyboard->mod_indexes[i])))
+ modifiers |= (1 << i);
+ }
+
+ return modifiers;
+}
+
+WL_EXPORT struct xkb_state *
+ds_keyboard_get_xkb_state(struct ds_keyboard *keyboard)
+{
+ return keyboard->xkb_state;
+}
+
+WL_EXPORT void
+ds_keyboard_notify_key(struct ds_keyboard *keyboard,
+ struct ds_event_keyboard_key *event)
+{
+ uint32_t keycode;
+ enum xkb_key_direction dir;
+ bool updated;
+
+ keyboard_key_update(keyboard, event);
+
+ wl_signal_emit(&keyboard->events.key, event);
+
+ if (!keyboard->xkb_state)
+ return;
+
+ if (event->update_state) {
+ keycode = event->keycode + 8;
+ dir = (event->state == WL_KEYBOARD_KEY_STATE_PRESSED) ?
+ XKB_KEY_DOWN : XKB_KEY_UP;
+ xkb_state_update_key(keyboard->xkb_state, keycode, dir);
+ }
+
+ updated = keyboard_modifier_update(keyboard);
+ if (updated)
+ wl_signal_emit(&keyboard->events.modifiers, keyboard);
+
+ keyboard_led_update(keyboard);
+}
+
+WL_EXPORT void
+ds_keyboard_notify_modifiers(struct ds_keyboard *keyboard,
+ uint32_t mods_depressed, uint32_t mods_latched, uint32_t mods_locked,
+ uint32_t group)
+{
+ bool updated;
+
+ if (!keyboard->xkb_state)
+ return;
+
+ xkb_state_update_mask(keyboard->xkb_state, mods_depressed, mods_latched,
+ mods_locked, 0, 0, group);
+
+ updated = keyboard_modifier_update(keyboard);
+ if (updated)
+ wl_signal_emit(&keyboard->events.modifiers, keyboard);
+
+ keyboard_led_update(keyboard);
+}
+
+WL_EXPORT void
+ds_keyboard_add_destroy_listener(struct ds_keyboard *keyboard,
+ struct wl_listener *listener)
+{
+ wl_signal_add(&keyboard->events.destroy, listener);
+}
+
+WL_EXPORT void
+ds_keyboard_add_key_listener(struct ds_keyboard *keyboard,
+ struct wl_listener *listener)
+{
+ wl_signal_add(&keyboard->events.key, listener);
+}
+
+WL_EXPORT void
+ds_keyboard_add_modifiers_listener(struct ds_keyboard *keyboard,
+ struct wl_listener *listener)
+{
+ wl_signal_add(&keyboard->events.modifiers, listener);
+}
+
+WL_EXPORT void
+ds_keyboard_add_keymap_listener(struct ds_keyboard *keyboard,
+ struct wl_listener *listener)
+{
+ wl_signal_add(&keyboard->events.keymap, listener);
+}
+
+WL_EXPORT void
+ds_keyboard_add_repeat_info_listener(struct ds_keyboard *keyboard,
+ struct wl_listener *listener)
+{
+ wl_signal_add(&keyboard->events.repeat_info, listener);
+}
+
+void
+ds_keyboard_init(struct ds_keyboard *keyboard,
+ const struct ds_keyboard_interface *iface)
+{
+ keyboard->iface = iface;
+ keyboard->keymap_fd = -1;
+
+ wl_signal_init(&keyboard->events.destroy);
+ wl_signal_init(&keyboard->events.key);
+ wl_signal_init(&keyboard->events.modifiers);
+ wl_signal_init(&keyboard->events.keymap);
+ wl_signal_init(&keyboard->events.repeat_info);
+}
+
+void
+ds_keyboard_destroy(struct ds_keyboard *keyboard)
+{
+ if (keyboard->iface && keyboard->iface->destroy)
+ keyboard->iface->destroy(keyboard);
+ else
+ free(keyboard);
+}
+
+static bool
+keyboard_modifier_update(struct ds_keyboard *keyboard)
+{
+ xkb_mod_mask_t depressed, latched, locked, group;
+
+ if (!keyboard->xkb_state)
+ return false;
+
+ depressed = xkb_state_serialize_mods(keyboard->xkb_state,
+ XKB_STATE_MODS_DEPRESSED);
+ latched = xkb_state_serialize_mods(keyboard->xkb_state,
+ XKB_STATE_MODS_LATCHED);
+ locked = xkb_state_serialize_mods(keyboard->xkb_state,
+ XKB_STATE_MODS_LOCKED);
+ group = xkb_state_serialize_layout(keyboard->xkb_state,
+ XKB_STATE_LAYOUT_EFFECTIVE);
+ if (depressed == keyboard->modifiers.depressed &&
+ latched == keyboard->modifiers.latched &&
+ locked == keyboard->modifiers.locked &&
+ group == keyboard->modifiers.group)
+ return false;
+
+ keyboard->modifiers.depressed = depressed;
+ keyboard->modifiers.latched = latched;
+ keyboard->modifiers.locked = locked;
+ keyboard->modifiers.group = group;
+
+ return true;
+}
+
+static void keyboard_key_update(struct ds_keyboard *keyboard,
+ struct ds_event_keyboard_key *event)
+{
+ // TODO
+}
+
+static void keyboard_led_update(struct ds_keyboard *keyboard)
+{
+ // TODO
+}