Implemented full evdev keyboard text support

This is based on the Linux kernel driver, and has fallback mapping tables in case we aren't connected to a virtual terminal.
This commit is contained in:
Sam Lantinga 2017-01-09 02:54:42 -08:00
parent 49292705a9
commit e0a40fb6a9
7 changed files with 5681 additions and 184 deletions

2
configure vendored
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@ -23348,7 +23348,7 @@ $as_echo "#define SDL_TIMER_UNIX 1" >>confdefs.h
fi fi
# Set up files for evdev input # Set up files for evdev input
if test x$use_input_events = xyes; then if test x$use_input_events = xyes; then
SOURCES="$SOURCES $srcdir/src/core/linux/SDL_evdev.c" SOURCES="$SOURCES $srcdir/src/core/linux/SDL_evdev*.c"
fi fi
;; ;;
*-*-cygwin* | *-*-mingw32*) *-*-cygwin* | *-*-mingw32*)

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@ -3123,7 +3123,7 @@ case "$host" in
fi fi
# Set up files for evdev input # Set up files for evdev input
if test x$use_input_events = xyes; then if test x$use_input_events = xyes; then
SOURCES="$SOURCES $srcdir/src/core/linux/SDL_evdev.c" SOURCES="$SOURCES $srcdir/src/core/linux/SDL_evdev*.c"
fi fi
;; ;;
*-*-cygwin* | *-*-mingw32*) *-*-cygwin* | *-*-mingw32*)

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@ -30,27 +30,21 @@
*/ */
#include "SDL_evdev.h" #include "SDL_evdev.h"
#include "SDL_evdev_kbd.h"
#include <sys/stat.h> #include <sys/stat.h>
#include <unistd.h> #include <unistd.h>
#include <fcntl.h> #include <fcntl.h>
#include <sys/ioctl.h> #include <sys/ioctl.h>
#include <limits.h> /* For the definition of PATH_MAX */
#include <linux/input.h> #include <linux/input.h>
#ifdef SDL_INPUT_LINUXKD
#include <linux/kd.h>
#include <linux/keyboard.h>
#include <linux/vt.h>
#include <linux/tiocl.h> /* for TIOCL_GETSHIFTSTATE */
#endif
#include "SDL.h" #include "SDL.h"
#include "SDL_assert.h" #include "SDL_assert.h"
#include "SDL_endian.h" #include "SDL_endian.h"
#include "../../core/linux/SDL_udev.h"
#include "SDL_scancode.h" #include "SDL_scancode.h"
#include "../../events/SDL_events_c.h" #include "../../events/SDL_events_c.h"
#include "../../events/scancodes_linux.h" /* adds linux_scancode_table */ #include "../../events/scancodes_linux.h" /* adds linux_scancode_table */
#include "../../core/linux/SDL_udev.h"
/* These are not defined in older Linux kernel headers */ /* These are not defined in older Linux kernel headers */
#ifndef SYN_DROPPED #ifndef SYN_DROPPED
@ -62,9 +56,6 @@
#define ABS_MT_POSITION_Y 0x36 #define ABS_MT_POSITION_Y 0x36
#define ABS_MT_TRACKING_ID 0x39 #define ABS_MT_TRACKING_ID 0x39
#endif #endif
#ifndef K_OFF
#define K_OFF 0x04
#endif
typedef struct SDL_evdevlist_item typedef struct SDL_evdevlist_item
{ {
@ -103,12 +94,11 @@ typedef struct SDL_evdevlist_item
typedef struct SDL_EVDEV_PrivateData typedef struct SDL_EVDEV_PrivateData
{ {
int ref_count;
int num_devices;
SDL_evdevlist_item *first; SDL_evdevlist_item *first;
SDL_evdevlist_item *last; SDL_evdevlist_item *last;
int num_devices; SDL_EVDEV_keyboard_state *kbd;
int ref_count;
int console_fd;
int old_kb_mode;
} SDL_EVDEV_PrivateData; } SDL_EVDEV_PrivateData;
#define _THIS SDL_EVDEV_PrivateData *_this #define _THIS SDL_EVDEV_PrivateData *_this
@ -135,28 +125,6 @@ static Uint8 EVDEV_MouseButtons[] = {
SDL_BUTTON_X2 + 3 /* BTN_TASK 0x117 */ SDL_BUTTON_X2 + 3 /* BTN_TASK 0x117 */
}; };
/* Prevent keystrokes from reaching the tty */
static int SDL_EVDEV_mute_keyboard(int tty_fd, int* old_kb_mode)
{
if (ioctl(tty_fd, KDGKBMODE, old_kb_mode) < 0) {
return SDL_SetError("Failed to get keyboard mode during muting");
}
if (ioctl(tty_fd, KDSKBMODE, K_OFF) < 0) {
return SDL_SetError("Failed to set keyboard mode during muting");
}
return 0;
}
/* Restore the keyboard mode for given tty */
static void SDL_EVDEV_unmute_keyboard(int tty_fd, int old_kb_mode)
{
if (ioctl(tty_fd, KDSKBMODE, old_kb_mode) < 0) {
SDL_SetError("Failed to set keyboard mode during unmuting");
}
}
int int
SDL_EVDEV_Init(void) SDL_EVDEV_Init(void)
{ {
@ -187,14 +155,7 @@ SDL_EVDEV_Init(void)
/* TODO: Scan the devices manually, like a caveman */ /* TODO: Scan the devices manually, like a caveman */
#endif /* SDL_USE_LIBUDEV */ #endif /* SDL_USE_LIBUDEV */
/* This might fail if we're not connected to a tty (e.g. on the Steam Link) */ _this->kbd = SDL_EVDEV_kbd_init();
_this->console_fd = open("/dev/tty", O_RDONLY);
/* Mute the keyboard so keystrokes only generate evdev events and do not
leak through to the console */
if (_this->console_fd >= 0) {
SDL_EVDEV_mute_keyboard(_this->console_fd, &_this->old_kb_mode);
}
} }
_this->ref_count += 1; _this->ref_count += 1;
@ -217,10 +178,7 @@ SDL_EVDEV_Quit(void)
SDL_UDEV_Quit(); SDL_UDEV_Quit();
#endif /* SDL_USE_LIBUDEV */ #endif /* SDL_USE_LIBUDEV */
if (_this->console_fd >= 0) { SDL_EVDEV_kbd_quit(_this->kbd);
SDL_EVDEV_unmute_keyboard(_this->console_fd, _this->old_kb_mode);
close(_this->console_fd);
}
/* Remove existing devices */ /* Remove existing devices */
while(_this->first != NULL) { while(_this->first != NULL) {
@ -261,89 +219,6 @@ void SDL_EVDEV_udev_callback(SDL_UDEV_deviceevent udev_event, int udev_class,
} }
#endif /* SDL_USE_LIBUDEV */ #endif /* SDL_USE_LIBUDEV */
#ifdef SDL_INPUT_LINUXKD
/* this logic is pulled from kbd_keycode() in drivers/tty/vt/keyboard.c in the
Linux kernel source */
static void SDL_EVDEV_do_text_input(unsigned short keycode)
{
char shift_state;
int locks_state;
struct kbentry kbe;
unsigned char type;
char text[2] = { 0 };
if (_this->console_fd < 0)
return;
shift_state = TIOCL_GETSHIFTSTATE;
if (ioctl(_this->console_fd, TIOCLINUX, &shift_state) < 0) {
/* TODO: error */
return;
}
kbe.kb_table = shift_state;
kbe.kb_index = keycode;
if (ioctl(_this->console_fd, KDGKBENT, &kbe) < 0) {
/* TODO: error */
return;
}
if (kbe.kb_value == K_HOLE || kbe.kb_value == K_NOSUCHMAP) {
return;
}
kbe.kb_value ^= 0xf000;
type = KTYP(kbe.kb_value);
if (type < 0xf0) {
/*
* FIXME: keysyms with a type below 0xf0 represent a unicode character
* which requires special handling due to dead characters, diacritics,
* etc. For perfect input a proper way to deal with such characters
* should be implemented.
*
* For reference, the only place I was able to find out about this
* special 0xf0 value was in an unused? couple of patches listed below.
*
* http://ftp.tc.edu.tw/pub/docs/Unicode/utf8/linux-2.3.12-keyboard.diff
* http://ftp.tc.edu.tw/pub/docs/Unicode/utf8/linux-2.3.12-console.diff
*/
return;
}
type -= 0xf0;
/* if type is KT_LETTER then it can be affected by Caps Lock */
if (type == KT_LETTER) {
type = KT_LATIN;
if (ioctl(_this->console_fd, KDGKBLED, &locks_state) < 0) {
/* TODO: error */
return;
}
if (locks_state & K_CAPSLOCK) {
kbe.kb_table = shift_state ^ (1 << KG_SHIFT);
if (ioctl(_this->console_fd, KDGKBENT, &kbe) < 0) {
/* TODO: error */
return;
}
}
}
/* TODO: convert values >= 0x80 from ISO-8859-1? to UTF-8 */
if (type != KT_LATIN || KVAL(kbe.kb_value) >= 0x80)
return;
*text = KVAL(kbe.kb_value);
SDL_SendKeyboardText(text);
}
#endif /* SDL_INPUT_LINUXKD */
void void
SDL_EVDEV_Poll(void) SDL_EVDEV_Poll(void)
{ {
@ -395,11 +270,9 @@ SDL_EVDEV_Poll(void)
SDL_SendKeyboardKey(SDL_RELEASED, scan_code); SDL_SendKeyboardKey(SDL_RELEASED, scan_code);
} else if (events[i].value == 1 || events[i].value == 2 /* key repeated */) { } else if (events[i].value == 1 || events[i].value == 2 /* key repeated */) {
SDL_SendKeyboardKey(SDL_PRESSED, scan_code); SDL_SendKeyboardKey(SDL_PRESSED, scan_code);
#ifdef SDL_INPUT_LINUXKD
SDL_EVDEV_do_text_input(events[i].code);
#endif /* SDL_INPUT_LINUXKD */
} }
} }
SDL_EVDEV_kbd_keycode(_this->kbd, events[i].code, events[i].value);
break; break;
case EV_ABS: case EV_ABS:
switch(events[i].code) { switch(events[i].code) {

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@ -0,0 +1,677 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2017 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"
#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 "../../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;
}
SDL_EVDEV_keyboard_state *
SDL_EVDEV_kbd_init(void)
{
SDL_EVDEV_keyboard_state *kbd;
int i;
char shift_state, flag_state;
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);
shift_state = TIOCL_GETSHIFTSTATE;
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;
}
/* Mute the keyboard so keystrokes only generate evdev events
* and do not leak through to the console
*/
ioctl(kbd->console_fd, KDSKBMODE, K_OFF);
}
#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;
}
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) {
kbd->slockstate = 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: */

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@ -0,0 +1,29 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2017 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.
*/
struct SDL_EVDEV_keyboard_state;
typedef struct SDL_EVDEV_keyboard_state SDL_EVDEV_keyboard_state;
extern SDL_EVDEV_keyboard_state *SDL_EVDEV_kbd_init(void);
extern void SDL_EVDEV_kbd_keycode(SDL_EVDEV_keyboard_state *state, unsigned int keycode, int down);
extern void SDL_EVDEV_kbd_quit(SDL_EVDEV_keyboard_state *state);
/* vi: set ts=4 sw=4 expandtab: */

View File

@ -0,0 +1,284 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2017 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.
*/
static struct kbdiacrs default_accents = {
68,
{
{ 0x60, 0x41, 0xc0 },
{ 0x60, 0x61, 0xe0 },
{ 0x27, 0x41, 0xc1 },
{ 0x27, 0x61, 0xe1 },
{ 0x5e, 0x41, 0xc2 },
{ 0x5e, 0x61, 0xe2 },
{ 0x7e, 0x41, 0xc3 },
{ 0x7e, 0x61, 0xe3 },
{ 0x22, 0x41, 0xc4 },
{ 0x22, 0x61, 0xe4 },
{ 0x4f, 0x41, 0xc5 },
{ 0x6f, 0x61, 0xe5 },
{ 0x30, 0x41, 0xc5 },
{ 0x30, 0x61, 0xe5 },
{ 0x41, 0x41, 0xc5 },
{ 0x61, 0x61, 0xe5 },
{ 0x41, 0x45, 0xc6 },
{ 0x61, 0x65, 0xe6 },
{ 0x2c, 0x43, 0xc7 },
{ 0x2c, 0x63, 0xe7 },
{ 0x60, 0x45, 0xc8 },
{ 0x60, 0x65, 0xe8 },
{ 0x27, 0x45, 0xc9 },
{ 0x27, 0x65, 0xe9 },
{ 0x5e, 0x45, 0xca },
{ 0x5e, 0x65, 0xea },
{ 0x22, 0x45, 0xcb },
{ 0x22, 0x65, 0xeb },
{ 0x60, 0x49, 0xcc },
{ 0x60, 0x69, 0xec },
{ 0x27, 0x49, 0xcd },
{ 0x27, 0x69, 0xed },
{ 0x5e, 0x49, 0xce },
{ 0x5e, 0x69, 0xee },
{ 0x22, 0x49, 0xcf },
{ 0x22, 0x69, 0xef },
{ 0x2d, 0x44, 0xd0 },
{ 0x2d, 0x64, 0xf0 },
{ 0x7e, 0x4e, 0xd1 },
{ 0x7e, 0x6e, 0xf1 },
{ 0x60, 0x4f, 0xd2 },
{ 0x60, 0x6f, 0xf2 },
{ 0x27, 0x4f, 0xd3 },
{ 0x27, 0x6f, 0xf3 },
{ 0x5e, 0x4f, 0xd4 },
{ 0x5e, 0x6f, 0xf4 },
{ 0x7e, 0x4f, 0xd5 },
{ 0x7e, 0x6f, 0xf5 },
{ 0x22, 0x4f, 0xd6 },
{ 0x22, 0x6f, 0xf6 },
{ 0x2f, 0x4f, 0xd8 },
{ 0x2f, 0x6f, 0xf8 },
{ 0x60, 0x55, 0xd9 },
{ 0x60, 0x75, 0xf9 },
{ 0x27, 0x55, 0xda },
{ 0x27, 0x75, 0xfa },
{ 0x5e, 0x55, 0xdb },
{ 0x5e, 0x75, 0xfb },
{ 0x22, 0x55, 0xdc },
{ 0x22, 0x75, 0xfc },
{ 0x27, 0x59, 0xdd },
{ 0x27, 0x79, 0xfd },
{ 0x54, 0x48, 0xde },
{ 0x74, 0x68, 0xfe },
{ 0x73, 0x73, 0xdf },
{ 0x22, 0x79, 0xff },
{ 0x73, 0x7a, 0xdf },
{ 0x69, 0x6a, 0xff },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00 },
}
};
/* vi: set ts=4 sw=4 expandtab: */

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