a120d4c79f
Rather than maintain copies of the entire focus stack, this PR transactionises the focus by introducing two new properties to the container state and using those when rendering. * `bool focused` means this container has actual focus. Only one container should have this equalling true in its current state. * `struct sway_container *focus_inactive_child` points to the immediate child that was most recently focused (eg. for tabbed and stacked containers).
432 lines
14 KiB
C
432 lines
14 KiB
C
#include <assert.h>
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#include <limits.h>
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#include <wlr/backend/multi.h>
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#include <wlr/backend/session.h>
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#include <wlr/types/wlr_idle.h>
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#include "sway/desktop/transaction.h"
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#include "sway/input/seat.h"
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#include "sway/input/keyboard.h"
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#include "sway/input/input-manager.h"
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#include "sway/commands.h"
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#include "log.h"
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/**
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* Remove all key ids associated to a keycode from the list of pressed keys
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*/
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static void state_erase_key(struct sway_shortcut_state *state,
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uint32_t keycode) {
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size_t j = 0;
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for (size_t i = 0; i < state->npressed; ++i) {
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if (i > j) {
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state->pressed_keys[j] = state->pressed_keys[i];
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state->pressed_keycodes[j] = state->pressed_keycodes[i];
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}
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if (state->pressed_keycodes[i] != keycode) {
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++j;
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}
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}
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while(state->npressed > j) {
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--state->npressed;
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state->pressed_keys[state->npressed] = 0;
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state->pressed_keycodes[state->npressed] = 0;
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}
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}
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/**
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* Add a key id (with associated keycode) to the list of pressed keys,
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* if the list is not full.
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*/
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static void state_add_key(struct sway_shortcut_state *state,
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uint32_t keycode, uint32_t key_id) {
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if (state->npressed >= SWAY_KEYBOARD_PRESSED_KEYS_CAP) {
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return;
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}
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size_t i = 0;
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while (i < state->npressed && state->pressed_keys[i] < key_id) {
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++i;
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}
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size_t j = state->npressed;
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while (j > i) {
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state->pressed_keys[j] = state->pressed_keys[j - 1];
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state->pressed_keycodes[j] = state->pressed_keycodes[j - 1];
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--j;
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}
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state->pressed_keys[i] = key_id;
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state->pressed_keycodes[i] = keycode;
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state->npressed++;
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}
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/**
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* Update the shortcut model state in response to new input
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*/
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static void update_shortcut_state(struct sway_shortcut_state *state,
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struct wlr_event_keyboard_key *event, uint32_t new_key,
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uint32_t raw_modifiers) {
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bool last_key_was_a_modifier = raw_modifiers != state->last_raw_modifiers;
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state->last_raw_modifiers = raw_modifiers;
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if (last_key_was_a_modifier && state->last_keycode) {
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// Last pressed key before this one was a modifier
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state_erase_key(state, state->last_keycode);
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}
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if (event->state == WLR_KEY_PRESSED) {
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// Add current key to set; there may be duplicates
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state_add_key(state, event->keycode, new_key);
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state->last_keycode = event->keycode;
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} else {
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state_erase_key(state, event->keycode);
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}
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}
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/**
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* If one exists, finds a binding which matches the shortcut model state,
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* current modifiers, release state, and locked state.
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*/
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static void get_active_binding(const struct sway_shortcut_state *state,
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list_t *bindings, struct sway_binding **current_binding,
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uint32_t modifiers, bool release, bool locked) {
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for (int i = 0; i < bindings->length; ++i) {
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struct sway_binding *binding = bindings->items[i];
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if (modifiers ^ binding->modifiers ||
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state->npressed != (size_t)binding->keys->length ||
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locked > binding->locked ||
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release != binding->release) {
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continue;
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}
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bool match = true;
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for (size_t j = 0; j < state->npressed; j++) {
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uint32_t key = *(uint32_t *)binding->keys->items[j];
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if (key != state->pressed_keys[j]) {
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match = false;
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break;
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}
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}
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if (!match) {
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continue;
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}
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if (*current_binding && *current_binding != binding) {
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wlr_log(WLR_DEBUG, "encountered duplicate bindings %d and %d",
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(*current_binding)->order, binding->order);
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} else {
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*current_binding = binding;
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}
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return;
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}
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}
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/**
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* Execute the command associated to a binding
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*/
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static void keyboard_execute_command(struct sway_keyboard *keyboard,
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struct sway_binding *binding) {
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wlr_log(WLR_DEBUG, "running command for binding: %s",
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binding->command);
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config->handler_context.seat = keyboard->seat_device->sway_seat;
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struct cmd_results *results = execute_command(binding->command, NULL);
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transaction_commit_dirty();
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if (results->status != CMD_SUCCESS) {
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wlr_log(WLR_DEBUG, "could not run command for binding: %s (%s)",
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binding->command, results->error);
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}
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free_cmd_results(results);
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}
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/**
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* Execute a built-in, hardcoded compositor binding. These are triggered from a
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* single keysym.
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*
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* Returns true if the keysym was handled by a binding and false if the event
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* should be propagated to clients.
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*/
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static bool keyboard_execute_compositor_binding(struct sway_keyboard *keyboard,
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const xkb_keysym_t *pressed_keysyms, uint32_t modifiers, size_t keysyms_len) {
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for (size_t i = 0; i < keysyms_len; ++i) {
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xkb_keysym_t keysym = pressed_keysyms[i];
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if (keysym >= XKB_KEY_XF86Switch_VT_1 &&
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keysym <= XKB_KEY_XF86Switch_VT_12) {
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if (wlr_backend_is_multi(server.backend)) {
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struct wlr_session *session =
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wlr_multi_get_session(server.backend);
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if (session) {
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unsigned vt = keysym - XKB_KEY_XF86Switch_VT_1 + 1;
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wlr_session_change_vt(session, vt);
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}
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}
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return true;
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}
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}
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return false;
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}
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/**
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* Get keysyms and modifiers from the keyboard as xkb sees them.
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*
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* This uses the xkb keysyms translation based on pressed modifiers and clears
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* the consumed modifiers from the list of modifiers passed to keybind
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* detection.
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*
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* On US layout, pressing Alt+Shift+2 will trigger Alt+@.
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*/
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static size_t keyboard_keysyms_translated(struct sway_keyboard *keyboard,
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xkb_keycode_t keycode, const xkb_keysym_t **keysyms,
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uint32_t *modifiers) {
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struct wlr_input_device *device =
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keyboard->seat_device->input_device->wlr_device;
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*modifiers = wlr_keyboard_get_modifiers(device->keyboard);
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xkb_mod_mask_t consumed = xkb_state_key_get_consumed_mods2(
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device->keyboard->xkb_state, keycode, XKB_CONSUMED_MODE_XKB);
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*modifiers = *modifiers & ~consumed;
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return xkb_state_key_get_syms(device->keyboard->xkb_state,
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keycode, keysyms);
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}
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/**
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* Get keysyms and modifiers from the keyboard as if modifiers didn't change
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* keysyms.
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*
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* This avoids the xkb keysym translation based on modifiers considered pressed
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* in the state.
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*
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* This will trigger keybinds such as Alt+Shift+2.
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*/
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static size_t keyboard_keysyms_raw(struct sway_keyboard *keyboard,
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xkb_keycode_t keycode, const xkb_keysym_t **keysyms,
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uint32_t *modifiers) {
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struct wlr_input_device *device =
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keyboard->seat_device->input_device->wlr_device;
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*modifiers = wlr_keyboard_get_modifiers(device->keyboard);
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xkb_layout_index_t layout_index = xkb_state_key_get_layout(
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device->keyboard->xkb_state, keycode);
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return xkb_keymap_key_get_syms_by_level(device->keyboard->keymap,
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keycode, layout_index, 0, keysyms);
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}
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static void handle_keyboard_key(struct wl_listener *listener, void *data) {
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struct sway_keyboard *keyboard =
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wl_container_of(listener, keyboard, keyboard_key);
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struct wlr_seat *wlr_seat = keyboard->seat_device->sway_seat->wlr_seat;
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struct wlr_input_device *wlr_device =
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keyboard->seat_device->input_device->wlr_device;
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wlr_idle_notify_activity(keyboard->seat_device->sway_seat->input->server->idle, wlr_seat);
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struct wlr_event_keyboard_key *event = data;
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bool input_inhibited = keyboard->seat_device->sway_seat->exclusive_client != NULL;
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// Identify new keycode, raw keysym(s), and translated keysym(s)
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xkb_keycode_t keycode = event->keycode + 8;
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const xkb_keysym_t *translated_keysyms;
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uint32_t translated_modifiers;
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size_t translated_keysyms_len =
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keyboard_keysyms_translated(keyboard, keycode, &translated_keysyms,
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&translated_modifiers);
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const xkb_keysym_t *raw_keysyms;
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uint32_t raw_modifiers;
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size_t raw_keysyms_len =
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keyboard_keysyms_raw(keyboard, keycode, &raw_keysyms, &raw_modifiers);
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uint32_t code_modifiers = wlr_keyboard_get_modifiers(wlr_device->keyboard);
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// Update shortcut model state
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update_shortcut_state(&keyboard->state_keycodes, event,
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(uint32_t)keycode, code_modifiers);
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for (size_t i = 0; i < translated_keysyms_len; ++i) {
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update_shortcut_state(&keyboard->state_keysyms_translated,
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event, (uint32_t)translated_keysyms[i],
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code_modifiers);
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}
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for (size_t i = 0; i < raw_keysyms_len; ++i) {
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update_shortcut_state(&keyboard->state_keysyms_raw,
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event, (uint32_t)raw_keysyms[i],
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code_modifiers);
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}
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bool handled = false;
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// Identify active release binding
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struct sway_binding *binding_released = NULL;
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get_active_binding(&keyboard->state_keycodes,
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config->current_mode->keycode_bindings, &binding_released,
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code_modifiers, true, input_inhibited);
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get_active_binding(&keyboard->state_keysyms_translated,
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config->current_mode->keysym_bindings, &binding_released,
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translated_modifiers, true, input_inhibited);
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get_active_binding(&keyboard->state_keysyms_raw,
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config->current_mode->keysym_bindings, &binding_released,
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raw_modifiers, true, input_inhibited);
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// Execute stored release binding once no longer active
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if (keyboard->held_binding && binding_released != keyboard->held_binding &&
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event->state == WLR_KEY_RELEASED) {
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keyboard_execute_command(keyboard, keyboard->held_binding);
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handled = true;
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}
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if (binding_released != keyboard->held_binding) {
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keyboard->held_binding = NULL;
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}
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if (binding_released && event->state == WLR_KEY_PRESSED) {
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keyboard->held_binding = binding_released;
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}
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// Identify and execute active pressed binding
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if (event->state == WLR_KEY_PRESSED) {
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struct sway_binding *binding_pressed = NULL;
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get_active_binding(&keyboard->state_keycodes,
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config->current_mode->keycode_bindings, &binding_pressed,
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code_modifiers, false, input_inhibited);
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get_active_binding(&keyboard->state_keysyms_translated,
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config->current_mode->keysym_bindings, &binding_pressed,
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translated_modifiers, false, input_inhibited);
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get_active_binding(&keyboard->state_keysyms_raw,
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config->current_mode->keysym_bindings, &binding_pressed,
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raw_modifiers, false, input_inhibited);
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if (binding_pressed) {
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keyboard_execute_command(keyboard, binding_pressed);
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handled = true;
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}
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}
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// Compositor bindings
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if (!handled && event->state == WLR_KEY_PRESSED) {
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handled = keyboard_execute_compositor_binding(
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keyboard, translated_keysyms, translated_modifiers,
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translated_keysyms_len);
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}
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if (!handled && event->state == WLR_KEY_PRESSED) {
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handled = keyboard_execute_compositor_binding(
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keyboard, raw_keysyms, raw_modifiers,
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raw_keysyms_len);
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}
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if (!handled || event->state == WLR_KEY_RELEASED) {
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wlr_seat_set_keyboard(wlr_seat, wlr_device);
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wlr_seat_keyboard_notify_key(wlr_seat, event->time_msec,
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event->keycode, event->state);
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}
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}
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static void handle_keyboard_modifiers(struct wl_listener *listener,
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void *data) {
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struct sway_keyboard *keyboard =
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wl_container_of(listener, keyboard, keyboard_modifiers);
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struct wlr_seat *wlr_seat = keyboard->seat_device->sway_seat->wlr_seat;
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struct wlr_input_device *wlr_device =
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keyboard->seat_device->input_device->wlr_device;
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wlr_seat_set_keyboard(wlr_seat, wlr_device);
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wlr_seat_keyboard_notify_modifiers(wlr_seat, &wlr_device->keyboard->modifiers);
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}
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struct sway_keyboard *sway_keyboard_create(struct sway_seat *seat,
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struct sway_seat_device *device) {
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struct sway_keyboard *keyboard =
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calloc(1, sizeof(struct sway_keyboard));
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if (!sway_assert(keyboard, "could not allocate sway keyboard")) {
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return NULL;
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}
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keyboard->seat_device = device;
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device->keyboard = keyboard;
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wl_list_init(&keyboard->keyboard_key.link);
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wl_list_init(&keyboard->keyboard_modifiers.link);
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return keyboard;
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}
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void sway_keyboard_configure(struct sway_keyboard *keyboard) {
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struct xkb_rule_names rules;
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memset(&rules, 0, sizeof(rules));
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struct input_config *input_config =
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input_device_get_config(keyboard->seat_device->input_device);
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struct wlr_input_device *wlr_device =
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keyboard->seat_device->input_device->wlr_device;
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if (input_config && input_config->xkb_layout) {
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rules.layout = input_config->xkb_layout;
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} else {
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rules.layout = getenv("XKB_DEFAULT_LAYOUT");
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}
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if (input_config && input_config->xkb_model) {
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rules.model = input_config->xkb_model;
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} else {
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rules.model = getenv("XKB_DEFAULT_MODEL");
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}
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if (input_config && input_config->xkb_options) {
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rules.options = input_config->xkb_options;
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} else {
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rules.options = getenv("XKB_DEFAULT_OPTIONS");
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}
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if (input_config && input_config->xkb_rules) {
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rules.rules = input_config->xkb_rules;
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} else {
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rules.rules = getenv("XKB_DEFAULT_RULES");
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}
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if (input_config && input_config->xkb_variant) {
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rules.variant = input_config->xkb_variant;
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} else {
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rules.variant = getenv("XKB_DEFAULT_VARIANT");
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}
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struct xkb_context *context = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
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if (!sway_assert(context, "cannot create XKB context")) {
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return;
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}
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struct xkb_keymap *keymap =
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xkb_keymap_new_from_names(context, &rules, XKB_KEYMAP_COMPILE_NO_FLAGS);
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if (!keymap) {
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wlr_log(WLR_DEBUG, "cannot configure keyboard: keymap does not exist");
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xkb_context_unref(context);
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return;
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}
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xkb_keymap_unref(keyboard->keymap);
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keyboard->keymap = keymap;
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wlr_keyboard_set_keymap(wlr_device->keyboard, keyboard->keymap);
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if (input_config && input_config->repeat_delay != INT_MIN
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&& input_config->repeat_rate != INT_MIN) {
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wlr_keyboard_set_repeat_info(wlr_device->keyboard,
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input_config->repeat_rate, input_config->repeat_delay);
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} else {
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wlr_keyboard_set_repeat_info(wlr_device->keyboard, 25, 600);
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}
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xkb_context_unref(context);
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struct wlr_seat *seat = keyboard->seat_device->sway_seat->wlr_seat;
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wlr_seat_set_keyboard(seat, wlr_device);
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wl_list_remove(&keyboard->keyboard_key.link);
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wl_signal_add(&wlr_device->keyboard->events.key, &keyboard->keyboard_key);
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keyboard->keyboard_key.notify = handle_keyboard_key;
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wl_list_remove(&keyboard->keyboard_modifiers.link);
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wl_signal_add( &wlr_device->keyboard->events.modifiers,
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&keyboard->keyboard_modifiers);
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keyboard->keyboard_modifiers.notify = handle_keyboard_modifiers;
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}
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void sway_keyboard_destroy(struct sway_keyboard *keyboard) {
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if (!keyboard) {
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return;
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}
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if (keyboard->keymap) {
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xkb_keymap_unref(keyboard->keymap);
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}
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wl_list_remove(&keyboard->keyboard_key.link);
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wl_list_remove(&keyboard->keyboard_modifiers.link);
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free(keyboard);
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}
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