#define _POSIX_C_SOURCE 200112L #include #include #include #include #include "seat.h" #include "view.h" static void keyboard_handle_modifiers( struct wl_listener *listener, void *data) { /* This event is raised when a modifier key, such as shift or alt, is * pressed. We simply communicate this to the client. */ struct diyac_keyboard *keyboard = wl_container_of(listener, keyboard, modifiers); /* * A seat can only have one keyboard, but this is a limitation of the * Wayland protocol - not wlroots. We assign all connected keyboards to the * same seat. You can swap out the underlying wlr_keyboard like this and * wlr_seat handles this transparently. */ wlr_seat_set_keyboard(keyboard->server->seat.wlr_seat, keyboard->wlr_keyboard); /* Send modifiers to the client. */ wlr_seat_keyboard_notify_modifiers(keyboard->server->seat.wlr_seat, &keyboard->wlr_keyboard->modifiers); } static bool handle_keybinding(struct diyac_server *server, xkb_keysym_t sym) { /* * Here we handle compositor keybindings. This is when the compositor is * processing keys, rather than passing them on to the client for its own * processing. * * This function assumes Alt is held down. */ switch (sym) { case XKB_KEY_Escape: wl_display_terminate(server->wl_display); break; case XKB_KEY_F1: /* Cycle to the next toplevel */ if (wl_list_length(&server->views) < 2) { break; } struct diyac_view *next_toplevel = wl_container_of(server->views.prev, next_toplevel, link); diyac_focus_view(next_toplevel, true); break; default: return false; } return true; } static void keyboard_handle_key( struct wl_listener *listener, void *data) { /* This event is raised when a key is pressed or released. */ struct diyac_keyboard *keyboard = wl_container_of(listener, keyboard, key); struct diyac_server *server = keyboard->server; struct wlr_keyboard_key_event *event = data; struct wlr_seat *seat = server->seat.wlr_seat; /* Translate libinput keycode -> xkbcommon */ uint32_t keycode = event->keycode + 8; /* Get a list of keysyms based on the keymap for this keyboard */ const xkb_keysym_t *syms; int nsyms = xkb_state_key_get_syms( keyboard->wlr_keyboard->xkb_state, keycode, &syms); bool handled = false; uint32_t modifiers = wlr_keyboard_get_modifiers(keyboard->wlr_keyboard); if ((modifiers & WLR_MODIFIER_ALT) && event->state == WL_KEYBOARD_KEY_STATE_PRESSED) { /* If alt is held down and this button was _pressed_, we attempt to * process it as a compositor keybinding. */ for (int i = 0; i < nsyms; i++) { handled = handle_keybinding(server, syms[i]); } } if (!handled) { /* Otherwise, we pass it along to the client. */ wlr_seat_set_keyboard(seat, keyboard->wlr_keyboard); wlr_seat_keyboard_notify_key(seat, event->time_msec, event->keycode, event->state); } } static void keyboard_handle_destroy(struct wl_listener *listener, void *data) { /* This event is raised by the keyboard base wlr_input_device to signal * the destruction of the wlr_keyboard. It will no longer receive events * and should be destroyed. */ struct diyac_keyboard *keyboard = wl_container_of(listener, keyboard, destroy); wl_list_remove(&keyboard->modifiers.link); wl_list_remove(&keyboard->key.link); wl_list_remove(&keyboard->destroy.link); wl_list_remove(&keyboard->link); free(keyboard); } static void server_new_keyboard(struct diyac_server *server, struct wlr_input_device *device) { struct wlr_keyboard *wlr_keyboard = wlr_keyboard_from_input_device(device); struct diyac_keyboard *keyboard = calloc(1, sizeof(*keyboard)); keyboard->server = server; keyboard->wlr_keyboard = wlr_keyboard; /* We need to prepare an XKB keymap and assign it to the keyboard. This * assumes the defaults (e.g. layout = "us"). */ struct xkb_context *context = xkb_context_new(XKB_CONTEXT_NO_FLAGS); struct xkb_keymap *keymap = xkb_keymap_new_from_names(context, NULL, XKB_KEYMAP_COMPILE_NO_FLAGS); wlr_keyboard_set_keymap(wlr_keyboard, keymap); xkb_keymap_unref(keymap); xkb_context_unref(context); wlr_keyboard_set_repeat_info(wlr_keyboard, 25, 600); /* Here we set up listeners for keyboard events. */ keyboard->modifiers.notify = keyboard_handle_modifiers; wl_signal_add(&wlr_keyboard->events.modifiers, &keyboard->modifiers); keyboard->key.notify = keyboard_handle_key; wl_signal_add(&wlr_keyboard->events.key, &keyboard->key); keyboard->destroy.notify = keyboard_handle_destroy; wl_signal_add(&device->events.destroy, &keyboard->destroy); wlr_seat_set_keyboard(server->seat.wlr_seat, keyboard->wlr_keyboard); /* And add the keyboard to our list of keyboards */ wl_list_insert(&server->seat.keyboards, &keyboard->link); } static void server_new_pointer(struct diyac_server *server, struct wlr_input_device *device) { /* We don't do anything special with pointers. All of our pointer handling * is proxied through wlr_cursor. On another compositor, you might take this * opportunity to do libinput configuration on the device to set * acceleration, etc. */ wlr_cursor_attach_input_device(server->seat.cursor, device); } static void server_new_input(struct wl_listener *listener, void *data) { /* This event is raised by the backend when a new input device becomes * available. */ struct diyac_seat *seat = wl_container_of(listener, seat, new_input); struct wlr_input_device *device = data; switch (device->type) { case WLR_INPUT_DEVICE_KEYBOARD: server_new_keyboard(seat->server, device); break; case WLR_INPUT_DEVICE_POINTER: server_new_pointer(seat->server, device); break; default: break; } /* We need to let the wlr_seat know what our capabilities are, which is * communiciated to the client. In Diyac we always have a cursor, even if * there are no pointer devices, so we always include that capability. */ uint32_t caps = WL_SEAT_CAPABILITY_POINTER; if (!wl_list_empty(&seat->keyboards)) { caps |= WL_SEAT_CAPABILITY_KEYBOARD; } wlr_seat_set_capabilities(seat->wlr_seat, caps); } static void seat_request_cursor(struct wl_listener *listener, void *data) { struct diyac_seat *seat = wl_container_of( listener, seat, request_cursor); /* This event is raised by the seat when a client provides a cursor image */ struct wlr_seat_pointer_request_set_cursor_event *event = data; struct wlr_seat_client *focused_client = seat->wlr_seat->pointer_state.focused_client; /* This can be sent by any client, so we check to make sure this one is * actually has pointer focus first. */ if (focused_client == event->seat_client) { /* Once we've vetted the client, we can tell the cursor to use the * provided surface as the cursor image. It will set the hardware cursor * on the output that it's currently on and continue to do so as the * cursor moves between outputs. */ wlr_cursor_set_surface(seat->cursor, event->surface, event->hotspot_x, event->hotspot_y); } } static void seat_request_set_selection(struct wl_listener *listener, void *data) { /* This event is raised by the seat when a client wants to set the selection, * usually when the user copies something. wlroots allows compositors to * ignore such requests if they so choose, but in diyac we always honor */ struct diyac_seat *seat = wl_container_of( listener, seat, request_set_selection); struct wlr_seat_request_set_selection_event *event = data; wlr_seat_set_selection(seat->wlr_seat, event->source, event->serial); } /* * Configures a seat, which is a single "seat" at which a user sits and * operates the computer. This conceptually includes up to one keyboard, * pointer, touch, and drawing tablet device. We also rig up a listener to * let us know when new input devices are available on the backend. */ void diyac_init_seat(struct diyac_server *server) { // server->seat = calloc(1, sizeof(struct diyac_seat)); server->seat.server = server; server->seat.new_input.notify = server_new_input; wl_signal_add(&server->backend->events.new_input, &server->seat.new_input); server->seat.wlr_seat = wlr_seat_create(server->wl_display, "seat0"); server->seat.request_cursor.notify = seat_request_cursor; wl_signal_add(&server->seat.wlr_seat->events.request_set_cursor, &server->seat.request_cursor); server->seat.request_set_selection.notify = seat_request_set_selection; wl_signal_add(&server->seat.wlr_seat->events.request_set_selection, &server->seat.request_set_selection); } static void seat_focus(struct diyac_seat *seat, struct wlr_surface *surface, bool is_lock_surface) { /* * Respect session lock. This check is critical, DO NOT REMOVE. * It should also come before the !surface condition, or the * lock screen may lose focus and become impossible to unlock. */ struct diyac_server *server = seat->server; /*if (server->session_lock && !is_lock_surface) { return; }*/ if (!surface) { wlr_seat_keyboard_notify_clear_focus(seat->wlr_seat); return; } /* Respect input inhibit (also used by some lock screens) */ /* if (input_inhibit_blocks_surface(seat, surface->resource)) { return; } */ struct wlr_keyboard *keyboard = wlr_seat_get_keyboard(seat->wlr_seat); if (keyboard) { wlr_seat_keyboard_notify_enter(seat->wlr_seat, surface, keyboard->keycodes, keyboard->num_keycodes, &keyboard->modifiers); } /* struct wlr_pointer_constraint_v1 *constraint = wlr_pointer_constraints_v1_constraint_for_surface(server->constraints, surface, seat->seat); constrain_cursor(server, constraint); */ } void diyac_seat_focus_surface(struct diyac_seat *seat, struct wlr_surface *surface) { /* Respect layer-shell exclusive keyboard-interactivity. */ if (seat->focused_layer && seat->focused_layer->current.keyboard_interactive == ZWLR_LAYER_SURFACE_V1_KEYBOARD_INTERACTIVITY_EXCLUSIVE) { return; } seat_focus(seat, surface, /*is_lock_surface*/ false); } void diyac_seat_focus_layer(struct diyac_seat *seat, struct wlr_layer_surface_v1 *layer) { if (!layer) { seat->focused_layer = NULL; diyac_focus_topmost_view(seat->server, false); return; } seat_focus(seat, layer->surface, /*is_lock_surface*/ false); if (layer->current.layer >= ZWLR_LAYER_SHELL_V1_LAYER_TOP) { seat->focused_layer = layer; } }