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#include <wlr/backend/multi.h>
#include <wlr/backend/session.h>
#include "sway/input/seat.h"
#include "sway/input/keyboard.h"
#include "sway/input/input-manager.h"
#include "sway/commands.h"
#include "log.h"
static size_t pressed_keysyms_length(xkb_keysym_t *pressed_keysyms) {
size_t n = 0;
for (size_t i = 0; i < SWAY_KEYBOARD_PRESSED_KEYSYMS_CAP; ++i) {
if (pressed_keysyms[i] != XKB_KEY_NoSymbol) {
++n;
}
}
return n;
}
static ssize_t pressed_keysyms_index(xkb_keysym_t *pressed_keysyms,
xkb_keysym_t keysym) {
for (size_t i = 0; i < SWAY_KEYBOARD_PRESSED_KEYSYMS_CAP; ++i) {
if (pressed_keysyms[i] == keysym) {
return i;
}
}
return -1;
}
/**
* Execute a built-in, hardcoded compositor binding. These are triggered from a
* single keysym.
*
* Returns true if the keysym was handled by a binding and false if the event
* should be propagated to clients.
*/
static bool keyboard_execute_compositor_binding(struct sway_keyboard *keyboard,
xkb_keysym_t *pressed_keysyms, uint32_t modifiers, size_t keysyms_len) {
for (size_t i = 0; i < keysyms_len; ++i) {
xkb_keysym_t keysym = pressed_keysyms[i];
if (keysym >= XKB_KEY_XF86Switch_VT_1 &&
keysym <= XKB_KEY_XF86Switch_VT_12) {
if (wlr_backend_is_multi(server.backend)) {
struct wlr_session *session =
wlr_multi_get_session(server.backend);
if (session) {
unsigned vt = keysym - XKB_KEY_XF86Switch_VT_1 + 1;
wlr_session_change_vt(session, vt);
}
}
return true;
}
}
return false;
}
/**
* Execute keyboard bindings. These include compositor bindings and user-defined
* bindings.
*
* Returns true if the keysym was handled by a binding and false if the event
* should be propagated to clients.
*/
static bool keyboard_execute_bindsym(struct sway_keyboard *keyboard,
xkb_keysym_t *pressed_keysyms, uint32_t modifiers, size_t keysyms_len) {
// configured bindings
int n = pressed_keysyms_length(pressed_keysyms);
list_t *keysym_bindings = config->current_mode->keysym_bindings;
for (int i = 0; i < keysym_bindings->length; ++i) {
struct sway_binding *binding = keysym_bindings->items[i];
if (modifiers ^ binding->modifiers || n != binding->keys->length) {
continue;
}
bool match = true;
for (int j = 0; j < binding->keys->length; ++j) {
match =
pressed_keysyms_index(pressed_keysyms,
*(int*)binding->keys->items[j]) >= 0;
if (!match) {
break;
}
}
if (match) {
sway_log(L_DEBUG, "running command for binding: %s", binding->command);
struct cmd_results *results = handle_command(binding->command);
if (results->status != CMD_SUCCESS) {
sway_log(L_DEBUG, "could not run command for binding: %s",
binding->command);
}
free_cmd_results(results);
return true;
}
}
return false;
}
/*
* Get keysyms and modifiers from the keyboard as xkb sees them.
*
* This uses the xkb keysyms translation based on pressed modifiers and clears
* the consumed modifiers from the list of modifiers passed to keybind
* detection.
*
* On US layout, pressing Alt+Shift+2 will trigger Alt+@.
*/
static size_t keyboard_keysyms_translated(struct sway_keyboard *keyboard,
xkb_keycode_t keycode, const xkb_keysym_t **keysyms,
uint32_t *modifiers) {
struct wlr_input_device *device =
keyboard->seat_device->input_device->wlr_device;
*modifiers = wlr_keyboard_get_modifiers(device->keyboard);
xkb_mod_mask_t consumed = xkb_state_key_get_consumed_mods2(
device->keyboard->xkb_state, keycode, XKB_CONSUMED_MODE_XKB);
*modifiers = *modifiers & ~consumed;
return xkb_state_key_get_syms(device->keyboard->xkb_state,
keycode, keysyms);
}
/*
* Get keysyms and modifiers from the keyboard as if modifiers didn't change
* keysyms.
*
* This avoids the xkb keysym translation based on modifiers considered pressed
* in the state.
*
* This will trigger keybinds such as Alt+Shift+2.
*/
static size_t keyboard_keysyms_raw(struct sway_keyboard *keyboard,
xkb_keycode_t keycode, const xkb_keysym_t **keysyms,
uint32_t *modifiers) {
struct wlr_input_device *device =
keyboard->seat_device->input_device->wlr_device;
*modifiers = wlr_keyboard_get_modifiers(device->keyboard);
xkb_layout_index_t layout_index = xkb_state_key_get_layout(
device->keyboard->xkb_state, keycode);
return xkb_keymap_key_get_syms_by_level(device->keyboard->keymap,
keycode, layout_index, 0, keysyms);
}
static void pressed_keysyms_add(xkb_keysym_t *pressed_keysyms,
xkb_keysym_t keysym) {
ssize_t i = pressed_keysyms_index(pressed_keysyms, keysym);
if (i < 0) {
i = pressed_keysyms_index(pressed_keysyms, XKB_KEY_NoSymbol);
if (i >= 0) {
pressed_keysyms[i] = keysym;
}
}
}
static void pressed_keysyms_remove(xkb_keysym_t *pressed_keysyms,
xkb_keysym_t keysym) {
ssize_t i = pressed_keysyms_index(pressed_keysyms, keysym);
if (i >= 0) {
pressed_keysyms[i] = XKB_KEY_NoSymbol;
}
}
static bool keysym_is_modifier(xkb_keysym_t keysym) {
switch (keysym) {
case XKB_KEY_Shift_L: case XKB_KEY_Shift_R:
case XKB_KEY_Control_L: case XKB_KEY_Control_R:
case XKB_KEY_Caps_Lock:
case XKB_KEY_Shift_Lock:
case XKB_KEY_Meta_L: case XKB_KEY_Meta_R:
case XKB_KEY_Alt_L: case XKB_KEY_Alt_R:
case XKB_KEY_Super_L: case XKB_KEY_Super_R:
case XKB_KEY_Hyper_L: case XKB_KEY_Hyper_R:
return true;
default:
return false;
}
}
static void pressed_keysyms_update(xkb_keysym_t *pressed_keysyms,
const xkb_keysym_t *keysyms, size_t keysyms_len,
enum wlr_key_state state) {
for (size_t i = 0; i < keysyms_len; ++i) {
if (keysym_is_modifier(keysyms[i])) {
continue;
}
if (state == WLR_KEY_PRESSED) {
pressed_keysyms_add(pressed_keysyms, keysyms[i]);
} else { // WLR_KEY_RELEASED
pressed_keysyms_remove(pressed_keysyms, keysyms[i]);
}
}
}
static void handle_keyboard_key(struct wl_listener *listener, void *data) {
struct sway_keyboard *keyboard =
wl_container_of(listener, keyboard, keyboard_key);
struct wlr_seat *wlr_seat = keyboard->seat_device->sway_seat->wlr_seat;
struct wlr_input_device *wlr_device =
keyboard->seat_device->input_device->wlr_device;
struct wlr_event_keyboard_key *event = data;
xkb_keycode_t keycode = event->keycode + 8;
bool handled = false;
const xkb_keysym_t *keysyms;
// handle keycodes
// TODO
handled = keyboard_execute_bindcode(keyboard);
// handle translated keysyms
uint32_t translated_modifiers;
size_t translated_keysyms_len =
keyboard_keysyms_translated(keyboard, keycode, &keysyms,
&translated_modifiers);
pressed_keysyms_update(keyboard->pressed_keysyms_translated, keysyms,
translated_keysyms_len, event->state);
if (event->state == WLR_KEY_PRESSED && !handled) {
handled = keyboard_execute_bindsym(keyboard,
keyboard->pressed_keysyms_translated, translated_modifiers,
translated_keysyms_len);
}
// Handle raw keysyms
uint32_t raw_modifiers;
size_t raw_keysyms_len = keyboard_keysyms_raw(keyboard, keycode, &keysyms, &raw_modifiers);
pressed_keysyms_update(keyboard->pressed_keysyms_raw, keysyms, raw_keysyms_len,
event->state);
if (event->state == WLR_KEY_PRESSED && !handled) {
handled = keyboard_execute_bindsym(keyboard,
keyboard->pressed_keysyms_raw, raw_modifiers,
raw_keysyms_len);
}
// Compositor bindings
if (event->state == WLR_KEY_PRESSED && !handled) {
handled =
keyboard_execute_compositor_binding(keyboard,
keyboard->pressed_keysyms_translated, translated_modifiers,
translated_keysyms_len);
}
if (event->state == WLR_KEY_PRESSED && !handled) {
handled =
keyboard_execute_compositor_binding(keyboard,
keyboard->pressed_keysyms_raw, raw_modifiers,
raw_keysyms_len);
}
if (!handled) {
wlr_seat_set_keyboard(wlr_seat, wlr_device);
wlr_seat_keyboard_notify_key(wlr_seat, event->time_msec,
event->keycode, event->state);
}
}
static void handle_keyboard_modifiers(struct wl_listener *listener,
void *data) {
struct sway_keyboard *keyboard =
wl_container_of(listener, keyboard, keyboard_modifiers);
struct wlr_seat *wlr_seat = keyboard->seat_device->sway_seat->wlr_seat;
struct wlr_input_device *wlr_device =
keyboard->seat_device->input_device->wlr_device;
wlr_seat_set_keyboard(wlr_seat, wlr_device);
wlr_seat_keyboard_notify_modifiers(wlr_seat);
}
struct sway_keyboard *sway_keyboard_create(struct sway_seat *seat,
struct sway_seat_device *device) {
struct sway_keyboard *keyboard =
calloc(1, sizeof(struct sway_keyboard));
if (!sway_assert(keyboard, "could not allocate sway keyboard")) {
return NULL;
}
keyboard->seat_device = device;
device->keyboard = keyboard;
wl_list_init(&keyboard->keyboard_key.link);
wl_list_init(&keyboard->keyboard_modifiers.link);
return keyboard;
}
void sway_keyboard_configure(struct sway_keyboard *keyboard) {
struct xkb_rule_names rules;
memset(&rules, 0, sizeof(rules));
struct input_config *input_config =
keyboard->seat_device->input_device->config;
struct wlr_input_device *wlr_device =
keyboard->seat_device->input_device->wlr_device;
if (input_config && input_config->xkb_layout) {
rules.layout = input_config->xkb_layout;
} else {
rules.layout = getenv("XKB_DEFAULT_LAYOUT");
}
if (input_config && input_config->xkb_model) {
rules.model = input_config->xkb_model;
} else {
rules.model = getenv("XKB_DEFAULT_MODEL");
}
if (input_config && input_config->xkb_options) {
rules.options = input_config->xkb_options;
} else {
rules.options = getenv("XKB_DEFAULT_OPTIONS");
}
if (input_config && input_config->xkb_rules) {
rules.rules = input_config->xkb_rules;
} else {
rules.rules = getenv("XKB_DEFAULT_RULES");
}
if (input_config && input_config->xkb_variant) {
rules.variant = input_config->xkb_variant;
} else {
rules.variant = getenv("XKB_DEFAULT_VARIANT");
}
struct xkb_context *context = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
if (!sway_assert(context, "cannot create XKB context")) {
return;
}
struct xkb_keymap *keymap =
xkb_keymap_new_from_names(context, &rules, XKB_KEYMAP_COMPILE_NO_FLAGS);
if (!keymap) {
sway_log(L_DEBUG, "cannot configure keyboard: keymap does not exist");
xkb_context_unref(context);
return;
}
xkb_keymap_unref(keyboard->keymap);
keyboard->keymap = keymap;
wlr_keyboard_set_keymap(wlr_device->keyboard, keyboard->keymap);
wlr_keyboard_set_repeat_info(wlr_device->keyboard, 25, 600);
xkb_context_unref(context);
struct wlr_seat *seat = keyboard->seat_device->sway_seat->wlr_seat;
wlr_seat_set_keyboard(seat, wlr_device);
wl_list_remove(&keyboard->keyboard_key.link);
wl_signal_add(&wlr_device->keyboard->events.key, &keyboard->keyboard_key);
keyboard->keyboard_key.notify = handle_keyboard_key;
wl_list_remove(&keyboard->keyboard_modifiers.link);
wl_signal_add( &wlr_device->keyboard->events.modifiers,
&keyboard->keyboard_modifiers);
keyboard->keyboard_modifiers.notify = handle_keyboard_modifiers;
}
void sway_keyboard_destroy(struct sway_keyboard *keyboard) {
if (!keyboard) {
return;
}
wl_list_remove(&keyboard->keyboard_key.link);
wl_list_remove(&keyboard->keyboard_modifiers.link);
free(keyboard);
}
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