diff --git a/include/sway/input/keyboard.h b/include/sway/input/keyboard.h index d9251f4c..0a5857f0 100644 --- a/include/sway/input/keyboard.h +++ b/include/sway/input/keyboard.h @@ -3,6 +3,8 @@ #include "sway/input/seat.h" +#define SWAY_KEYBOARD_PRESSED_KEYSYMS_CAP 32 + struct sway_keyboard { struct sway_seat_device *seat_device; @@ -10,6 +12,9 @@ struct sway_keyboard { struct wl_listener keyboard_key; struct wl_listener keyboard_modifiers; + + xkb_keysym_t pressed_keysyms_translated[SWAY_KEYBOARD_PRESSED_KEYSYMS_CAP]; + xkb_keysym_t pressed_keysyms_raw[SWAY_KEYBOARD_PRESSED_KEYSYMS_CAP]; }; struct sway_keyboard *sway_keyboard_create(struct sway_seat *seat, diff --git a/sway/input/keyboard.c b/sway/input/keyboard.c index 724941d8..25def7ac 100644 --- a/sway/input/keyboard.c +++ b/sway/input/keyboard.c @@ -3,6 +3,121 @@ #include "sway/input/input-manager.h" #include "log.h" +/* + * 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 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; +} + +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 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); @@ -10,9 +125,35 @@ static void handle_keyboard_key(struct wl_listener *listener, void *data) { struct wlr_input_device *wlr_device = keyboard->seat_device->input_device->wlr_device; struct wlr_event_keyboard_key *event = data; - wlr_seat_set_keyboard(wlr_seat, wlr_device); - wlr_seat_keyboard_notify_key(wlr_seat, event->time_msec, - event->keycode, event->state); + + xkb_keycode_t keycode = event->keycode + 8; + bool handled = false; + uint32_t modifiers; + const xkb_keysym_t *keysyms; + size_t keysyms_len; + + // handle translated keysyms + keysyms_len = keyboard_keysyms_translated(keyboard, keycode, &keysyms, + &modifiers); + pressed_keysyms_update(keyboard->pressed_keysyms_translated, keysyms, + keysyms_len, event->state); + if (event->state == WLR_KEY_PRESSED) { + // TODO execute binding + } + + // Handle raw keysyms + keysyms_len = keyboard_keysyms_raw(keyboard, keycode, &keysyms, &modifiers); + pressed_keysyms_update(keyboard->pressed_keysyms_raw, keysyms, keysyms_len, + event->state); + if (event->state == WLR_KEY_PRESSED && !handled) { + // TODO execute binding + } + + 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,