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x11: Provide labels for more keys (esp. international keys)

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rdb 2021-03-04 20:48:14 +01:00
parent 2e3ce27865
commit b4a242a4e3
1 changed files with 38 additions and 3 deletions
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41
panda/src/x11display/x11GraphicsWindow.cxx
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@ -2023,14 +2023,49 @@ get_keyboard_map() const {
// Compose a label for some keys; I have not yet been able to find an API
// that does this effectively.
if (sym >= XK_a && sym <= XK_z) {
if (sym >= XK_exclam && sym <= XK_asciitilde) {
label = toupper((char)sym);
}
else if (sym >= XK_F1 && sym <= XK_F35) {
label = "F" + format_string(sym - XK_F1 + 1);
}
else if (sym >= XK_exclamdown && sym <= XK_ydiaeresis) {
// A latin-1 symbol. Translate this to the label.
else if (sym > 0x1000000 && sym < 0x1110000) {
// Unicode code point. Encode as UTF-8.
char32_t ch = sym & 0x0ffffff;
if ((ch & ~0x7f) == 0) {
label = string(1, (char)ch);
}
else if ((ch & ~0x7ff) == 0) {
label =
string(1, (char)((ch >> 6) | 0xc0)) +
string(1, (char)((ch & 0x3f) | 0x80));
}
else if ((ch & ~0xffff) == 0) {
label =
string(1, (char)((ch >> 12) | 0xe0)) +
string(1, (char)(((ch >> 6) & 0x3f) | 0x80)) +
string(1, (char)((ch & 0x3f) | 0x80));
}
else {
label =
string(1, (char)((ch >> 18) | 0xf0)) +
string(1, (char)(((ch >> 12) & 0x3f) | 0x80)) +
string(1, (char)(((ch >> 6) & 0x3f) | 0x80)) +
string(1, (char)((ch & 0x3f) | 0x80));
}
}
else if ((sym >= XK_exclamdown && sym <= XK_umacron)
|| (sym >= XK_OE && sym <= XK_Ydiaeresis)
|| (sym >= XK_Serbian_dje && sym <= XK_Cyrillic_HARDSIGN)
|| (sym >= XK_kana_fullstop && sym <= XK_semivoicedsound)
|| (sym >= XK_Arabic_comma && sym <= XK_Arabic_sukun)
|| (sym >= XK_Greek_ALPHAaccent && sym <= XK_Greek_omega)
|| (sym >= XK_hebrew_doublelowline && sym <= XK_hebrew_taw)
|| (sym >= XK_Thai_kokai && sym <= XK_Thai_lekkao)
|| (sym >= XK_Hangul_Kiyeog && sym <= XK_Hangul_J_YeorinHieuh)
|| sym == XK_EuroSign
|| sym == XK_Korean_Won) {
// A non-unicode-based keysym. Translate this to the label.
char buffer[255];
int nbytes = XkbTranslateKeySym(_display, &sym, 0, buffer, 255, 0);
if (nbytes > 0) {