static bool _al_xwin_get_keyboard_mapping(void)
{
int i;
int count;
int missing = 0;
ALLEGRO_SYSTEM_XGLX *system = (void *)al_get_system_driver();
memset(used, 0, sizeof used);
memset(keycode_to_scancode, 0, sizeof keycode_to_scancode);
XDisplayKeycodes(system->x11display, &min_keycode, &max_keycode);
count = 1 + max_keycode - min_keycode;
if (keysyms) {
XFree(keysyms);
}
keysyms = XGetKeyboardMapping(system->x11display, min_keycode,
count, &sym_per_key);
ALLEGRO_INFO("%i keys, %i symbols per key.\n", count, sym_per_key);
if (sym_per_key <= 0) {
return false;
}
missing = 0;
for (i = min_keycode; i <= max_keycode; i++) {
KeySym sym = keysyms[sym_per_key * (i - min_keycode)];
KeySym sym2 = keysyms[sym_per_key * (i - min_keycode) + 1];
char *sym_str, *sym2_str;
int allegro_key = 0;
char str[1024];
sym_str = XKeysymToString(sym);
sym2_str = XKeysymToString(sym2);
snprintf(str, sizeof str, "key [%i: %s %s]", i,
sym_str ? sym_str : "NULL", sym2_str ? sym2_str : "NULL");
/* Hack for French keyboards, to correctly map ALLEGRO_KEY_0 to ALLEGRO_KEY_9. */
if (sym2 >= XK_0 && sym2 <= XK_9) {
allegro_key = find_allegro_key(sym2);
}
if (!allegro_key) {
if (sym != NoSymbol) {
allegro_key = find_allegro_key(sym);
if (allegro_key == 0) {
missing++;
ALLEGRO_DEBUG("%s defering.\n", str);
}
}
else {
/* No KeySym for this key - ignore it. */
keycode_to_scancode[i] = -1;
ALLEGRO_DEBUG("%s not assigned.\n", str);
}
}
if (allegro_key) {
bool is_double = false;
if (used[allegro_key]) {
is_double = true;
}
keycode_to_scancode[i] = allegro_key;
key_names[allegro_key] =
XKeysymToString(keysyms[sym_per_key * (i - min_keycode)]);
used[allegro_key] = 1;
ALLEGRO_DEBUG("%s%s assigned to %i.\n", str,
is_double ? " *double*" : "", allegro_key);
}
}
if (missing) {
/* The keys still not assigned are just assigned arbitrarily now. */
for (i = min_keycode; i <= max_keycode; i++) {
if (keycode_to_scancode[i] == 0) {
find_unknown_key_assignment(i);
}
}
}
if (xmodmap)
XFreeModifiermap(xmodmap);
xmodmap = XGetModifierMapping(system->x11display);
for (i = 0; i < 8; i++) {
int j;
char str[1024];
sprintf(str, "Modifier %d:", i + 1);
for (j = 0; j < xmodmap->max_keypermod; j++) {
KeyCode keycode = xmodmap->modifiermap[i * xmodmap->max_keypermod + j];
// XKeycodeToKeysym is deprecated
//KeySym sym = XKeycodeToKeysym(system->x11display, keycode, 0);
KeySym sym = XkbKeycodeToKeysym(system->x11display, keycode, 0, 0);
char *sym_str = XKeysymToString(sym);
sprintf(str + strlen(str), " %s", sym_str ? sym_str : "NULL");
}
ALLEGRO_DEBUG("%s\n", str);
}
/* The [xkeymap] section can be useful, e.g. if trying to play a
* game which has X and Y hardcoded as ALLEGRO_KEY_X and ALLEGRO_KEY_Y to mean
* left/right movement, but on the X11 keyboard X and Y are far apart.
* For normal use, a user never should have to touch [xkeymap] anymore
* though, and proper written programs will not hardcode such mappings.
*/
ALLEGRO_CONFIG *c = al_get_system_config();
char const *key;
ALLEGRO_CONFIG_ENTRY *it;
key = al_get_first_config_entry(c, "xkeymap", &it);
while (key) {
char const *val;
val = al_get_config_value(c, "xkeymap", key);
int keycode = strtol(key, NULL, 10);
int scancode = strtol(val, NULL, 10);
if (keycode > 0 && scancode > 0) {
keycode_to_scancode[keycode] = scancode;
ALLEGRO_WARN("User override: KeySym %i assigned to %i.\n",
keycode, scancode);
}
key = al_get_next_config_entry(&it);
}
return true;
}
/* x_get_keyboard_mapping:
* Generate a mapping from X11 keycodes to Allegro KEY_* codes. We have
* two goals: Every keypress should be mapped to a distinct Allegro KEY_*
* code. And we want the KEY_* codes to match the pressed
* key to some extent. To do the latter, the X11 KeySyms produced by a key
* are examined. If a match is found in the table above, the mapping is
* added to the mapping table. If no known KeySym is found for a key (or
* the same KeySym is found for more keys) - the remaining keys are
* distributed arbitrarily to the remaining KEY_* codes.
*
* In a future version, this could be simplified by mapping *all* the X11
* KeySyms to KEY_* codes.
*/
void _xwin_get_keyboard_mapping(void)
{
int i;
int count;
int missing = 0;
memset(used, 0, sizeof used);
memset(_xwin.keycode_to_scancode, 0, sizeof _xwin.keycode_to_scancode);
XLOCK();
XDisplayKeycodes(_xwin.display, &min_keycode, &max_keycode);
count = 1 + max_keycode - min_keycode;
if (keysyms) {
XFree(keysyms);
}
keysyms = XGetKeyboardMapping(_xwin.display, min_keycode,
count, &sym_per_key);
TRACE (PREFIX_I "%i keys, %i symbols per key.\n", count, sym_per_key);
missing = 0;
for (i = min_keycode; i <= max_keycode; i++) {
KeySym sym = keysyms[sym_per_key * (i - min_keycode)];
KeySym sym2 = keysyms[sym_per_key * (i - min_keycode) + 1];
char *sym_str, *sym2_str;
int allegro_key = 0;
sym_str = XKeysymToString(sym);
sym2_str = XKeysymToString(sym2);
TRACE (PREFIX_I "key [%i: %s %s]", i, sym_str ? sym_str : "NULL", sym2_str ?
sym2_str : "NULL");
/* Hack for French keyboards, to correctly map KEY_0 to KEY_9. */
if (sym2 >= XK_0 && sym2 <= XK_9) {
allegro_key = find_allegro_key(sym2);
}
if (!allegro_key) {
if (sym != NoSymbol) {
allegro_key = find_allegro_key(sym);
if (allegro_key == 0) {
missing++;
TRACE (" defering.\n");
}
}
else {
/* No KeySym for this key - ignore it. */
_xwin.keycode_to_scancode[i] = -1;
TRACE (" not assigned.\n");
}
}
if (allegro_key) {
if (used[allegro_key]) {
TRACE(" *double*");
}
_xwin.keycode_to_scancode[i] = allegro_key;
key_names[allegro_key] =
XKeysymToString(keysyms[sym_per_key * (i - min_keycode)]);
used[allegro_key] = 1;
TRACE(" assigned to %i.\n", allegro_key);
}
}
if (missing) {
/* The keys still not assigned are just assigned arbitrarily now. */
for (i = min_keycode; i <= max_keycode; i++) {
if (_xwin.keycode_to_scancode[i] == 0) {
find_unknown_key_assignment(i);
}
}
}
if (xmodmap)
XFreeModifiermap(xmodmap);
xmodmap = XGetModifierMapping(_xwin.display);
for (i = 0; i < 8; i++) {
int j;
TRACE (PREFIX_I "Modifier %d:", i + 1);
for (j = 0; j < xmodmap->max_keypermod; j++) {
KeySym sym = XKeycodeToKeysym(_xwin.display,
xmodmap->modifiermap[i * xmodmap->max_keypermod + j], 0);
char *sym_str = XKeysymToString(sym);
TRACE(" %s", sym_str ? sym_str : "NULL");
}
TRACE("\n");
}
/* The [xkeymap] section can be useful, e.g. if trying to play a
* game which has X and Y hardcoded as KEY_X and KEY_Y to mean
* left/right movement, but on the X11 keyboard X and Y are far apart.
* For normal use, a user never should have to touch [xkeymap] anymore
* though, and proper written programs will not hardcode such mappings.
*/
{
char *section, *option_format;
char option[128], tmp1[128], tmp2[128];
section = uconvert_ascii("xkeymap", tmp1);
option_format = uconvert_ascii("keycode%d", tmp2);
for (i = min_keycode; i <= max_keycode; i++) {
int scancode;
uszprintf(option, sizeof(option), option_format, i);
scancode = get_config_int(section, option, -1);
if (scancode > 0) {
_xwin.keycode_to_scancode[i] = scancode;
TRACE(PREFIX_I "User override: KeySym %i assigned to %i.\n", i, scancode);
}
}
}
XUNLOCK();
}
