diff options
Diffstat (limited to 'source/3rd-party/SDL2/src/core/linux/SDL_evdev_kbd.c')
| -rw-r--r-- | source/3rd-party/SDL2/src/core/linux/SDL_evdev_kbd.c | 840 |
1 files changed, 840 insertions, 0 deletions
diff --git a/source/3rd-party/SDL2/src/core/linux/SDL_evdev_kbd.c b/source/3rd-party/SDL2/src/core/linux/SDL_evdev_kbd.c new file mode 100644 index 0000000..00a3a54 --- /dev/null +++ b/source/3rd-party/SDL2/src/core/linux/SDL_evdev_kbd.c @@ -0,0 +1,840 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org> + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. +*/ +#include "../../SDL_internal.h" + +#include "SDL_evdev_kbd.h" +#include "SDL_hints.h" + +#ifdef SDL_INPUT_LINUXKD + +/* This logic is adapted from drivers/tty/vt/keyboard.c in the Linux kernel source */ + +#include <unistd.h> +#include <fcntl.h> +#include <sys/ioctl.h> +#include <linux/kd.h> +#include <linux/keyboard.h> +#include <linux/vt.h> +#include <linux/tiocl.h> /* for TIOCL_GETSHIFTSTATE */ + +#include <signal.h> + +#include "../../events/SDL_events_c.h" +#include "SDL_evdev_kbd_default_accents.h" +#include "SDL_evdev_kbd_default_keymap.h" + +/* These are not defined in older Linux kernel headers */ +#ifndef K_UNICODE +#define K_UNICODE 0x03 +#endif +#ifndef K_OFF +#define K_OFF 0x04 +#endif + +/* + * Handler Tables. + */ + +#define K_HANDLERS\ + k_self, k_fn, k_spec, k_pad,\ + k_dead, k_cons, k_cur, k_shift,\ + k_meta, k_ascii, k_lock, k_lowercase,\ + k_slock, k_dead2, k_brl, k_ignore + +typedef void (k_handler_fn)(SDL_EVDEV_keyboard_state *kbd, unsigned char value, char up_flag); +static k_handler_fn K_HANDLERS; +static k_handler_fn *k_handler[16] = { K_HANDLERS }; + +typedef void (fn_handler_fn)(SDL_EVDEV_keyboard_state *kbd); +static void fn_enter(SDL_EVDEV_keyboard_state *kbd); +static void fn_caps_toggle(SDL_EVDEV_keyboard_state *kbd); +static void fn_caps_on(SDL_EVDEV_keyboard_state *kbd); +static void fn_num(SDL_EVDEV_keyboard_state *kbd); +static void fn_compose(SDL_EVDEV_keyboard_state *kbd); + +static fn_handler_fn *fn_handler[] = +{ + NULL, fn_enter, NULL, NULL, + NULL, NULL, NULL, fn_caps_toggle, + fn_num, NULL, NULL, NULL, + NULL, fn_caps_on, fn_compose, NULL, + NULL, NULL, NULL, fn_num +}; + + +/* + * Keyboard State + */ + +struct SDL_EVDEV_keyboard_state +{ + int console_fd; + int old_kbd_mode; + unsigned short **key_maps; + unsigned char shift_down[NR_SHIFT]; /* shift state counters.. */ + SDL_bool dead_key_next; + int npadch; /* -1 or number assembled on pad */ + struct kbdiacrs *accents; + unsigned int diacr; + SDL_bool rep; /* flag telling character repeat */ + unsigned char lockstate; + unsigned char slockstate; + unsigned char ledflagstate; + char shift_state; + char text[128]; + unsigned int text_len; +}; + +#ifdef DUMP_ACCENTS +static void SDL_EVDEV_dump_accents(SDL_EVDEV_keyboard_state *kbd) +{ + unsigned int i; + + printf("static struct kbdiacrs default_accents = {\n"); + printf(" %d,\n", kbd->accents->kb_cnt); + printf(" {\n"); + for (i = 0; i < kbd->accents->kb_cnt; ++i) { + struct kbdiacr *diacr = &kbd->accents->kbdiacr[i]; + printf(" { 0x%.2x, 0x%.2x, 0x%.2x },\n", + diacr->diacr, diacr->base, diacr->result); + } + while (i < 256) { + printf(" { 0x00, 0x00, 0x00 },\n"); + ++i; + } + printf(" }\n"); + printf("};\n"); +} +#endif /* DUMP_ACCENTS */ + +#ifdef DUMP_KEYMAP +static void SDL_EVDEV_dump_keymap(SDL_EVDEV_keyboard_state *kbd) +{ + int i, j; + + for (i = 0; i < MAX_NR_KEYMAPS; ++i) { + if (kbd->key_maps[i]) { + printf("static unsigned short default_key_map_%d[NR_KEYS] = {", i); + for (j = 0; j < NR_KEYS; ++j) { + if ((j%8) == 0) { + printf("\n "); + } + printf("0x%.4x, ", kbd->key_maps[i][j]); + } + printf("\n};\n"); + } + } + printf("\n"); + printf("static unsigned short *default_key_maps[MAX_NR_KEYMAPS] = {\n"); + for (i = 0; i < MAX_NR_KEYMAPS; ++i) { + if (kbd->key_maps[i]) { + printf(" default_key_map_%d,\n", i); + } else { + printf(" NULL,\n"); + } + } + printf("};\n"); +} +#endif /* DUMP_KEYMAP */ + +static int SDL_EVDEV_kbd_load_keymaps(SDL_EVDEV_keyboard_state *kbd) +{ + int i, j; + + kbd->key_maps = (unsigned short **)SDL_calloc(MAX_NR_KEYMAPS, sizeof(unsigned short *)); + if (!kbd->key_maps) { + return -1; + } + + for (i = 0; i < MAX_NR_KEYMAPS; ++i) { + struct kbentry kbe; + + kbe.kb_table = i; + kbe.kb_index = 0; + if (ioctl(kbd->console_fd, KDGKBENT, &kbe) < 0) { + return -1; + } + + if (kbe.kb_value == K_NOSUCHMAP) { + continue; + } + + kbd->key_maps[i] = (unsigned short *)SDL_malloc(NR_KEYS * sizeof(unsigned short)); + if (!kbd->key_maps[i]) { + return -1; + } + + for (j = 0; j < NR_KEYS; ++j) { + kbe.kb_table = i; + kbe.kb_index = j; + if (ioctl(kbd->console_fd, KDGKBENT, &kbe) < 0) { + return -1; + } + kbd->key_maps[i][j] = (kbe.kb_value ^ 0xf000); + } + } + return 0; +} + +static SDL_EVDEV_keyboard_state * kbd_cleanup_state = NULL; +static int kbd_cleanup_sigactions_installed = 0; +static int kbd_cleanup_atexit_installed = 0; + +static struct sigaction old_sigaction[NSIG]; + +static int fatal_signals[] = +{ + /* Handlers for SIGTERM and SIGINT are installed in SDL_QuitInit. */ + SIGHUP, SIGQUIT, SIGILL, SIGABRT, + SIGFPE, SIGSEGV, SIGPIPE, SIGBUS, + SIGSYS +}; + +static void kbd_cleanup(void) +{ + SDL_EVDEV_keyboard_state* kbd = kbd_cleanup_state; + if (kbd == NULL) { + return; + } + kbd_cleanup_state = NULL; + + fprintf(stderr, "(SDL restoring keyboard) "); + ioctl(kbd->console_fd, KDSKBMODE, kbd->old_kbd_mode); +} + +void +SDL_EVDEV_kbd_reraise_signal(int sig) +{ + raise(sig); +} + +siginfo_t* SDL_EVDEV_kdb_cleanup_siginfo = NULL; +void* SDL_EVDEV_kdb_cleanup_ucontext = NULL; + +static void kbd_cleanup_signal_action(int signum, siginfo_t* info, void* ucontext) +{ + struct sigaction* old_action_p = &(old_sigaction[signum]); + sigset_t sigset; + + /* Restore original signal handler before going any further. */ + sigaction(signum, old_action_p, NULL); + + /* Unmask current signal. */ + sigemptyset(&sigset); + sigaddset(&sigset, signum); + sigprocmask(SIG_UNBLOCK, &sigset, NULL); + + /* Save original signal info and context for archeologists. */ + SDL_EVDEV_kdb_cleanup_siginfo = info; + SDL_EVDEV_kdb_cleanup_ucontext = ucontext; + + /* Restore keyboard. */ + kbd_cleanup(); + + /* Reraise signal. */ + SDL_EVDEV_kbd_reraise_signal(signum); +} + +static void kbd_unregister_emerg_cleanup() +{ + int tabidx, signum; + + kbd_cleanup_state = NULL; + + if (!kbd_cleanup_sigactions_installed) { + return; + } + kbd_cleanup_sigactions_installed = 0; + + for (tabidx = 0; tabidx < sizeof(fatal_signals) / sizeof(fatal_signals[0]); ++tabidx) { + struct sigaction* old_action_p; + struct sigaction cur_action; + signum = fatal_signals[tabidx]; + old_action_p = &(old_sigaction[signum]); + + /* Examine current signal action */ + if (sigaction(signum, NULL, &cur_action)) + continue; + + /* Check if action installed and not modifed */ + if (!(cur_action.sa_flags & SA_SIGINFO) + || cur_action.sa_sigaction != &kbd_cleanup_signal_action) + continue; + + /* Restore original action */ + sigaction(signum, old_action_p, NULL); + } +} + +static void kbd_cleanup_atexit(void) +{ + /* Restore keyboard. */ + kbd_cleanup(); + + /* Try to restore signal handlers in case shared library is being unloaded */ + kbd_unregister_emerg_cleanup(); +} + +static void kbd_register_emerg_cleanup(SDL_EVDEV_keyboard_state * kbd) +{ + int tabidx, signum; + + if (kbd_cleanup_state != NULL) { + return; + } + kbd_cleanup_state = kbd; + + if (!kbd_cleanup_atexit_installed) { + /* Since glibc 2.2.3, atexit() (and on_exit(3)) can be used within a shared library to establish + * functions that are called when the shared library is unloaded. + * -- man atexit(3) + */ + atexit(kbd_cleanup_atexit); + kbd_cleanup_atexit_installed = 1; + } + + if (kbd_cleanup_sigactions_installed) { + return; + } + kbd_cleanup_sigactions_installed = 1; + + for (tabidx = 0; tabidx < sizeof(fatal_signals) / sizeof(fatal_signals[0]); ++tabidx) { + struct sigaction* old_action_p; + struct sigaction new_action; + signum = fatal_signals[tabidx]; + old_action_p = &(old_sigaction[signum]); + if (sigaction(signum, NULL, old_action_p)) + continue; + + /* Skip SIGHUP and SIGPIPE if handler is already installed + * - assume the handler will do the cleanup + */ + if ((signum == SIGHUP || signum == SIGPIPE) + && (old_action_p->sa_handler != SIG_DFL + || (void (*)(int))old_action_p->sa_sigaction != SIG_DFL)) + continue; + + new_action = *old_action_p; + new_action.sa_flags |= SA_SIGINFO; + new_action.sa_sigaction = &kbd_cleanup_signal_action; + sigaction(signum, &new_action, NULL); + } +} + +SDL_EVDEV_keyboard_state * +SDL_EVDEV_kbd_init(void) +{ + SDL_EVDEV_keyboard_state *kbd; + int i; + char flag_state; + char shift_state[2] = {TIOCL_GETSHIFTSTATE, 0}; + + kbd = (SDL_EVDEV_keyboard_state *)SDL_calloc(1, sizeof(*kbd)); + if (!kbd) { + return NULL; + } + + kbd->npadch = -1; + + /* This might fail if we're not connected to a tty (e.g. on the Steam Link) */ + kbd->console_fd = open("/dev/tty", O_RDONLY); + + if (ioctl(kbd->console_fd, TIOCLINUX, shift_state) == 0) { + kbd->shift_state = *shift_state; + } + + if (ioctl(kbd->console_fd, KDGKBLED, &flag_state) == 0) { + kbd->ledflagstate = flag_state; + } + + kbd->accents = &default_accents; + if (ioctl(kbd->console_fd, KDGKBDIACR, kbd->accents) < 0) { + /* No worries, we'll use the default accent table */ + } + + kbd->key_maps = default_key_maps; + if (ioctl(kbd->console_fd, KDGKBMODE, &kbd->old_kbd_mode) == 0) { + /* Set the keyboard in UNICODE mode and load the keymaps */ + ioctl(kbd->console_fd, KDSKBMODE, K_UNICODE); + + if (SDL_EVDEV_kbd_load_keymaps(kbd) < 0) { + for (i = 0; i < MAX_NR_KEYMAPS; ++i) { + if (kbd->key_maps[i]) { + SDL_free(kbd->key_maps[i]); + } + } + SDL_free(kbd->key_maps); + + kbd->key_maps = default_key_maps; + } + + /* Allow inhibiting keyboard mute with env. variable for debugging etc. */ + if (getenv("SDL_INPUT_LINUX_KEEP_KBD") == NULL) { + /* Mute the keyboard so keystrokes only generate evdev events + * and do not leak through to the console + */ + ioctl(kbd->console_fd, KDSKBMODE, K_OFF); + + /* Make sure to restore keyboard if application fails to call + * SDL_Quit before exit or fatal signal is raised. + */ + if (!SDL_GetHintBoolean(SDL_HINT_NO_SIGNAL_HANDLERS, SDL_FALSE)) { + kbd_register_emerg_cleanup(kbd); + } + } + } + +#ifdef DUMP_ACCENTS + SDL_EVDEV_dump_accents(kbd); +#endif +#ifdef DUMP_KEYMAP + SDL_EVDEV_dump_keymap(kbd); +#endif + return kbd; +} + +void +SDL_EVDEV_kbd_quit(SDL_EVDEV_keyboard_state *kbd) +{ + if (!kbd) { + return; + } + + kbd_unregister_emerg_cleanup(); + + if (kbd->console_fd >= 0) { + /* Restore the original keyboard mode */ + ioctl(kbd->console_fd, KDSKBMODE, kbd->old_kbd_mode); + + close(kbd->console_fd); + kbd->console_fd = -1; + } + + if (kbd->key_maps && kbd->key_maps != default_key_maps) { + int i; + for (i = 0; i < MAX_NR_KEYMAPS; ++i) { + if (kbd->key_maps[i]) { + SDL_free(kbd->key_maps[i]); + } + } + SDL_free(kbd->key_maps); + } + + SDL_free(kbd); +} + +/* + * Helper Functions. + */ +static void put_queue(SDL_EVDEV_keyboard_state *kbd, uint c) +{ + /* c is already part of a UTF-8 sequence and safe to add as a character */ + if (kbd->text_len < (sizeof(kbd->text)-1)) { + kbd->text[kbd->text_len++] = (char)c; + } +} + +static void put_utf8(SDL_EVDEV_keyboard_state *kbd, uint c) +{ + if (c < 0x80) + /* 0******* */ + put_queue(kbd, c); + else if (c < 0x800) { + /* 110***** 10****** */ + put_queue(kbd, 0xc0 | (c >> 6)); + put_queue(kbd, 0x80 | (c & 0x3f)); + } else if (c < 0x10000) { + if (c >= 0xD800 && c < 0xE000) + return; + if (c == 0xFFFF) + return; + /* 1110**** 10****** 10****** */ + put_queue(kbd, 0xe0 | (c >> 12)); + put_queue(kbd, 0x80 | ((c >> 6) & 0x3f)); + put_queue(kbd, 0x80 | (c & 0x3f)); + } else if (c < 0x110000) { + /* 11110*** 10****** 10****** 10****** */ + put_queue(kbd, 0xf0 | (c >> 18)); + put_queue(kbd, 0x80 | ((c >> 12) & 0x3f)); + put_queue(kbd, 0x80 | ((c >> 6) & 0x3f)); + put_queue(kbd, 0x80 | (c & 0x3f)); + } +} + +/* + * We have a combining character DIACR here, followed by the character CH. + * If the combination occurs in the table, return the corresponding value. + * Otherwise, if CH is a space or equals DIACR, return DIACR. + * Otherwise, conclude that DIACR was not combining after all, + * queue it and return CH. + */ +static unsigned int handle_diacr(SDL_EVDEV_keyboard_state *kbd, unsigned int ch) +{ + unsigned int d = kbd->diacr; + unsigned int i; + + kbd->diacr = 0; + + for (i = 0; i < kbd->accents->kb_cnt; i++) { + if (kbd->accents->kbdiacr[i].diacr == d && + kbd->accents->kbdiacr[i].base == ch) { + return kbd->accents->kbdiacr[i].result; + } + } + + if (ch == ' ' || ch == d) + return d; + + put_utf8(kbd, d); + + return ch; +} + +static int vc_kbd_led(SDL_EVDEV_keyboard_state *kbd, int flag) +{ + return ((kbd->ledflagstate >> flag) & 1); +} + +static void set_vc_kbd_led(SDL_EVDEV_keyboard_state *kbd, int flag) +{ + kbd->ledflagstate |= 1 << flag; +} + +static void clr_vc_kbd_led(SDL_EVDEV_keyboard_state *kbd, int flag) +{ + kbd->ledflagstate &= ~(1 << flag); +} + +static void chg_vc_kbd_lock(SDL_EVDEV_keyboard_state *kbd, int flag) +{ + kbd->lockstate ^= 1 << flag; +} + +static void chg_vc_kbd_slock(SDL_EVDEV_keyboard_state *kbd, int flag) +{ + kbd->slockstate ^= 1 << flag; +} + +static void chg_vc_kbd_led(SDL_EVDEV_keyboard_state *kbd, int flag) +{ + kbd->ledflagstate ^= 1 << flag; +} + +/* + * Special function handlers + */ + +static void fn_enter(SDL_EVDEV_keyboard_state *kbd) +{ + if (kbd->diacr) { + put_utf8(kbd, kbd->diacr); + kbd->diacr = 0; + } +} + +static void fn_caps_toggle(SDL_EVDEV_keyboard_state *kbd) +{ + if (kbd->rep) + return; + + chg_vc_kbd_led(kbd, K_CAPSLOCK); +} + +static void fn_caps_on(SDL_EVDEV_keyboard_state *kbd) +{ + if (kbd->rep) + return; + + set_vc_kbd_led(kbd, K_CAPSLOCK); +} + +static void fn_num(SDL_EVDEV_keyboard_state *kbd) +{ + if (!kbd->rep) + chg_vc_kbd_led(kbd, K_NUMLOCK); +} + +static void fn_compose(SDL_EVDEV_keyboard_state *kbd) +{ + kbd->dead_key_next = SDL_TRUE; +} + +/* + * Special key handlers + */ + +static void k_ignore(SDL_EVDEV_keyboard_state *kbd, unsigned char value, char up_flag) +{ +} + +static void k_spec(SDL_EVDEV_keyboard_state *kbd, unsigned char value, char up_flag) +{ + if (up_flag) + return; + if (value >= SDL_arraysize(fn_handler)) + return; + if (fn_handler[value]) + fn_handler[value](kbd); +} + +static void k_lowercase(SDL_EVDEV_keyboard_state *kbd, unsigned char value, char up_flag) +{ +} + +static void k_self(SDL_EVDEV_keyboard_state *kbd, unsigned char value, char up_flag) +{ + if (up_flag) + return; /* no action, if this is a key release */ + + if (kbd->diacr) + value = handle_diacr(kbd, value); + + if (kbd->dead_key_next) { + kbd->dead_key_next = SDL_FALSE; + kbd->diacr = value; + return; + } + put_utf8(kbd, value); +} + +static void k_deadunicode(SDL_EVDEV_keyboard_state *kbd, unsigned int value, char up_flag) +{ + if (up_flag) + return; + + kbd->diacr = (kbd->diacr ? handle_diacr(kbd, value) : value); +} + +static void k_dead(SDL_EVDEV_keyboard_state *kbd, unsigned char value, char up_flag) +{ + const unsigned char ret_diacr[NR_DEAD] = {'`', '\'', '^', '~', '"', ',' }; + + k_deadunicode(kbd, ret_diacr[value], up_flag); +} + +static void k_dead2(SDL_EVDEV_keyboard_state *kbd, unsigned char value, char up_flag) +{ + k_deadunicode(kbd, value, up_flag); +} + +static void k_cons(SDL_EVDEV_keyboard_state *kbd, unsigned char value, char up_flag) +{ +} + +static void k_fn(SDL_EVDEV_keyboard_state *kbd, unsigned char value, char up_flag) +{ +} + +static void k_cur(SDL_EVDEV_keyboard_state *kbd, unsigned char value, char up_flag) +{ +} + +static void k_pad(SDL_EVDEV_keyboard_state *kbd, unsigned char value, char up_flag) +{ + static const char pad_chars[] = "0123456789+-*/\015,.?()#"; + + if (up_flag) + return; /* no action, if this is a key release */ + + if (!vc_kbd_led(kbd, K_NUMLOCK)) { + /* unprintable action */ + return; + } + + put_queue(kbd, pad_chars[value]); +} + +static void k_shift(SDL_EVDEV_keyboard_state *kbd, unsigned char value, char up_flag) +{ + int old_state = kbd->shift_state; + + if (kbd->rep) + return; + /* + * Mimic typewriter: + * a CapsShift key acts like Shift but undoes CapsLock + */ + if (value == KVAL(K_CAPSSHIFT)) { + value = KVAL(K_SHIFT); + if (!up_flag) + clr_vc_kbd_led(kbd, K_CAPSLOCK); + } + + if (up_flag) { + /* + * handle the case that two shift or control + * keys are depressed simultaneously + */ + if (kbd->shift_down[value]) + kbd->shift_down[value]--; + } else + kbd->shift_down[value]++; + + if (kbd->shift_down[value]) + kbd->shift_state |= (1 << value); + else + kbd->shift_state &= ~(1 << value); + + /* kludge */ + if (up_flag && kbd->shift_state != old_state && kbd->npadch != -1) { + put_utf8(kbd, kbd->npadch); + kbd->npadch = -1; + } +} + +static void k_meta(SDL_EVDEV_keyboard_state *kbd, unsigned char value, char up_flag) +{ +} + +static void k_ascii(SDL_EVDEV_keyboard_state *kbd, unsigned char value, char up_flag) +{ + int base; + + if (up_flag) + return; + + if (value < 10) { + /* decimal input of code, while Alt depressed */ + base = 10; + } else { + /* hexadecimal input of code, while AltGr depressed */ + value -= 10; + base = 16; + } + + if (kbd->npadch == -1) + kbd->npadch = value; + else + kbd->npadch = kbd->npadch * base + value; +} + +static void k_lock(SDL_EVDEV_keyboard_state *kbd, unsigned char value, char up_flag) +{ + if (up_flag || kbd->rep) + return; + + chg_vc_kbd_lock(kbd, value); +} + +static void k_slock(SDL_EVDEV_keyboard_state *kbd, unsigned char value, char up_flag) +{ + k_shift(kbd, value, up_flag); + if (up_flag || kbd->rep) + return; + + chg_vc_kbd_slock(kbd, value); + /* try to make Alt, oops, AltGr and such work */ + if (!kbd->key_maps[kbd->lockstate ^ kbd->slockstate]) { + kbd->slockstate = 0; + chg_vc_kbd_slock(kbd, value); + } +} + +static void k_brl(SDL_EVDEV_keyboard_state *kbd, unsigned char value, char up_flag) +{ +} + +void +SDL_EVDEV_kbd_keycode(SDL_EVDEV_keyboard_state *kbd, unsigned int keycode, int down) +{ + unsigned char shift_final; + unsigned char type; + unsigned short *key_map; + unsigned short keysym; + + if (!kbd) { + return; + } + + kbd->rep = (down == 2); + + shift_final = (kbd->shift_state | kbd->slockstate) ^ kbd->lockstate; + key_map = kbd->key_maps[shift_final]; + if (!key_map) { + /* Unsupported shift state (e.g. ctrl = 4, alt = 8), just reset to the default state */ + kbd->shift_state = 0; + kbd->slockstate = 0; + kbd->lockstate = 0; + return; + } + + if (keycode < NR_KEYS) { + keysym = key_map[keycode]; + } else { + return; + } + + type = KTYP(keysym); + + if (type < 0xf0) { + if (down) { + put_utf8(kbd, keysym); + } + } else { + type -= 0xf0; + + /* if type is KT_LETTER then it can be affected by Caps Lock */ + if (type == KT_LETTER) { + type = KT_LATIN; + + if (vc_kbd_led(kbd, K_CAPSLOCK)) { + key_map = kbd->key_maps[shift_final ^ (1 << KG_SHIFT)]; + if (key_map) { + keysym = key_map[keycode]; + } + } + } + + (*k_handler[type])(kbd, keysym & 0xff, !down); + + if (type != KT_SLOCK) { + kbd->slockstate = 0; + } + } + + if (kbd->text_len > 0) { + kbd->text[kbd->text_len] = '\0'; + SDL_SendKeyboardText(kbd->text); + kbd->text_len = 0; + } +} + +#else /* !SDL_INPUT_LINUXKD */ + +SDL_EVDEV_keyboard_state * +SDL_EVDEV_kbd_init(void) +{ + return NULL; +} + +void +SDL_EVDEV_kbd_keycode(SDL_EVDEV_keyboard_state *state, unsigned int keycode, int down) +{ +} + +void +SDL_EVDEV_kbd_quit(SDL_EVDEV_keyboard_state *state) +{ +} + +#endif /* SDL_INPUT_LINUXKD */ + +/* vi: set ts=4 sw=4 expandtab: */ |