diff --git a/include/sway/input/keyboard.h b/include/sway/input/keyboard.h index e99a54b1..6713398e 100644 --- a/include/sway/input/keyboard.h +++ b/include/sway/input/keyboard.h @@ -21,7 +21,9 @@ struct sway_shortcut_state { * including duplicates when a keycode generates multiple key ids. */ uint32_t pressed_keycodes[SWAY_KEYBOARD_PRESSED_KEYS_CAP]; - int last_key_index; + uint32_t last_keycode; + uint32_t last_raw_modifiers; + size_t npressed; }; struct sway_keyboard { @@ -36,7 +38,6 @@ struct sway_keyboard { struct sway_shortcut_state state_keysyms_raw; struct sway_shortcut_state state_keycodes; struct sway_binding *held_binding; - uint32_t last_modifiers; }; struct sway_keyboard *sway_keyboard_create(struct sway_seat *seat, diff --git a/sway/input/keyboard.c b/sway/input/keyboard.c index d90655f2..9e093828 100644 --- a/sway/input/keyboard.c +++ b/sway/input/keyboard.c @@ -9,86 +9,112 @@ #include "sway/commands.h" #include "log.h" +/** + * Remove all key ids associated to a keycode from the list of pressed keys + */ +static void state_erase_key(struct sway_shortcut_state *state, + uint32_t keycode) { + size_t j = 0; + for (size_t i = 0; i < state->npressed; ++i) { + if (i > j) { + state->pressed_keys[j] = state->pressed_keys[i]; + state->pressed_keycodes[j] = state->pressed_keycodes[i]; + } + if (state->pressed_keycodes[i] != keycode) { + ++j; + } + } + while(state->npressed > j) { + --state->npressed; + state->pressed_keys[state->npressed] = 0; + state->pressed_keycodes[state->npressed] = 0; + } +} + +/** + * Add a key id (with associated keycode) to the list of pressed keys, + * if the list is not full. + */ +static void state_add_key(struct sway_shortcut_state *state, + uint32_t keycode, uint32_t key_id) { + if (state->npressed >= SWAY_KEYBOARD_PRESSED_KEYS_CAP) { + return; + } + size_t i = 0; + while (i < state->npressed && state->pressed_keys[i] < key_id) { + ++i; + } + size_t j = state->npressed; + while (j > i) { + state->pressed_keys[j] = state->pressed_keys[j - 1]; + state->pressed_keycodes[j] = state->pressed_keycodes[j - 1]; + --j; + } + state->pressed_keys[i] = key_id; + state->pressed_keycodes[i] = keycode; + state->npressed++; +} + /** * Update the shortcut model state in response to new input */ static void update_shortcut_state(struct sway_shortcut_state *state, struct wlr_event_keyboard_key *event, uint32_t new_key, - bool last_key_was_a_modifier) { + uint32_t raw_modifiers) { + bool last_key_was_a_modifier = raw_modifiers != state->last_raw_modifiers; + state->last_raw_modifiers = raw_modifiers; + if (event->state == WLR_KEY_PRESSED) { - if (last_key_was_a_modifier && state->last_key_index >= 0) { + if (last_key_was_a_modifier && state->last_keycode) { // Last pressed key before this one was a modifier - state->pressed_keycodes[state->last_key_index] = 0; - state->pressed_keys[state->last_key_index] = 0; - state->last_key_index = -1; + state_erase_key(state, state->last_keycode); } // Add current key to set; there may be duplicates - for (size_t i = 0; i < SWAY_KEYBOARD_PRESSED_KEYS_CAP; ++i) { - if (!state->pressed_keys[i]) { - state->pressed_keys[i] = new_key; - state->pressed_keycodes[i] = event->keycode; - state->last_key_index = i; - break; - } - } + state_add_key(state, event->keycode, new_key); + state->last_keycode = event->keycode; } else { - for (size_t i = 0; i < SWAY_KEYBOARD_PRESSED_KEYS_CAP; ++i) { - // The same keycode may match multiple keysyms. - if (state->pressed_keycodes[i] == event->keycode) { - state->pressed_keys[i] = 0; - state->pressed_keycodes[i] = 0; - } - } + state_erase_key(state, event->keycode); } } /** - * - * Returns a binding which matches the shortcut model state (ignoring the - * `release` flag). + * If one exists, finds a binding which matches the shortcut model state, + * current modifiers, release state, and locked state. */ -static struct sway_binding *get_active_binding( - struct sway_shortcut_state *state, list_t *bindings, - uint32_t modifiers, bool locked) { - int npressed_keys = 0; - for (size_t i = 0; i < SWAY_KEYBOARD_PRESSED_KEYS_CAP; ++i) { - if (state->pressed_keys[i]) { - ++npressed_keys; - } - } +static void get_active_binding(const struct sway_shortcut_state *state, + list_t *bindings, struct sway_binding **current_binding, + uint32_t modifiers, bool release, bool locked) { for (int i = 0; i < bindings->length; ++i) { struct sway_binding *binding = bindings->items[i]; if (modifiers ^ binding->modifiers || - npressed_keys != binding->keys->length || - locked > binding->locked) { + state->npressed != (size_t)binding->keys->length || + locked > binding->locked || + release != binding->release) { continue; } bool match = true; - for (int j = 0; j < binding->keys->length; ++j) { + for (size_t j = 0; j < state->npressed; j++) { uint32_t key = *(uint32_t *)binding->keys->items[j]; - - bool key_found = false; - for (int k = 0; k < SWAY_KEYBOARD_PRESSED_KEYS_CAP; ++k) { - if (state->pressed_keys[k] == key) { - key_found = true; - break; - } - } - if (!key_found) { + if (key != state->pressed_keys[j]) { match = false; break; } } + if (!match) { + continue; + } - if (match) { - return binding; + if (*current_binding && *current_binding != binding) { + wlr_log(L_DEBUG, "encountered duplicate bindings %d and %d", + (*current_binding)->order, binding->order); + } else { + *current_binding = binding; } + return; } - - return NULL; } /** @@ -204,69 +230,65 @@ static void handle_keyboard_key(struct wl_listener *listener, void *data) { size_t raw_keysyms_len = keyboard_keysyms_raw(keyboard, keycode, &raw_keysyms, &raw_modifiers); - struct wlr_input_device *device = - keyboard->seat_device->input_device->wlr_device; - uint32_t code_modifiers = wlr_keyboard_get_modifiers(device->keyboard); - - bool last_key_was_a_modifier = code_modifiers != keyboard->last_modifiers; - keyboard->last_modifiers = code_modifiers; + uint32_t code_modifiers = wlr_keyboard_get_modifiers(wlr_device->keyboard); // Update shortcut model state update_shortcut_state(&keyboard->state_keycodes, event, - (uint32_t)keycode, last_key_was_a_modifier); + (uint32_t)keycode, code_modifiers); for (size_t i = 0; i < translated_keysyms_len; ++i) { update_shortcut_state(&keyboard->state_keysyms_translated, event, (uint32_t)translated_keysyms[i], - last_key_was_a_modifier && i == 0); + code_modifiers); } for (size_t i = 0; i < raw_keysyms_len; ++i) { update_shortcut_state(&keyboard->state_keysyms_raw, event, (uint32_t)raw_keysyms[i], - last_key_was_a_modifier && i == 0); + code_modifiers); } - // identify which binding should be executed. - struct sway_binding *binding = get_active_binding( - &keyboard->state_keycodes, - config->current_mode->keycode_bindings, - code_modifiers, input_inhibited); - struct sway_binding *translated_binding = get_active_binding( - &keyboard->state_keysyms_translated, - config->current_mode->keysym_bindings, - translated_modifiers, input_inhibited); - if (translated_binding && !binding) { - binding = translated_binding; - } else if (binding && translated_binding && binding != translated_binding) { - wlr_log(L_DEBUG, "encountered duplicate bindings %d and %d", - binding->order, translated_binding->order); - } - struct sway_binding *raw_binding = get_active_binding( - &keyboard->state_keysyms_raw, - config->current_mode->keysym_bindings, - raw_modifiers, input_inhibited); - if (raw_binding && !binding) { - binding = raw_binding; - } else if (binding && raw_binding && binding != raw_binding) { - wlr_log(L_DEBUG, "encountered duplicate bindings %d and %d", - binding->order, raw_binding->order); - } bool handled = false; - // Execute the identified binding if need be. - if (keyboard->held_binding && binding != keyboard->held_binding && + // Identify active release binding + struct sway_binding *binding_released = NULL; + get_active_binding(&keyboard->state_keycodes, + config->current_mode->keycode_bindings, &binding_released, + code_modifiers, true, input_inhibited); + get_active_binding(&keyboard->state_keysyms_translated, + config->current_mode->keysym_bindings, &binding_released, + translated_modifiers, true, input_inhibited); + get_active_binding(&keyboard->state_keysyms_raw, + config->current_mode->keysym_bindings, &binding_released, + raw_modifiers, true, input_inhibited); + + // Execute stored release binding once no longer active + if (keyboard->held_binding && binding_released != keyboard->held_binding && event->state == WLR_KEY_RELEASED) { keyboard_execute_command(keyboard, keyboard->held_binding); handled = true; } - if (binding != keyboard->held_binding) { + if (binding_released != keyboard->held_binding) { keyboard->held_binding = NULL; } - if (binding && event->state == WLR_KEY_PRESSED) { - if (binding->release) { - keyboard->held_binding = binding; - } else { - keyboard_execute_command(keyboard, binding); + if (binding_released && event->state == WLR_KEY_PRESSED) { + keyboard->held_binding = binding_released; + } + + // Identify and execute active pressed binding + if (event->state == WLR_KEY_PRESSED) { + struct sway_binding *binding_pressed = NULL; + get_active_binding(&keyboard->state_keycodes, + config->current_mode->keycode_bindings, &binding_pressed, + code_modifiers, false, input_inhibited); + get_active_binding(&keyboard->state_keysyms_translated, + config->current_mode->keysym_bindings, &binding_pressed, + translated_modifiers, false, input_inhibited); + get_active_binding(&keyboard->state_keysyms_raw, + config->current_mode->keysym_bindings, &binding_pressed, + raw_modifiers, false, input_inhibited); + + if (binding_pressed) { + keyboard_execute_command(keyboard, binding_pressed); handled = true; } } @@ -315,10 +337,6 @@ struct sway_keyboard *sway_keyboard_create(struct sway_seat *seat, wl_list_init(&keyboard->keyboard_key.link); wl_list_init(&keyboard->keyboard_modifiers.link); - keyboard->state_keycodes.last_key_index = -1; - keyboard->state_keysyms_raw.last_key_index = -1; - keyboard->state_keysyms_translated.last_key_index = -1; - return keyboard; }