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Implement progressive enhancement of key event reporting

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This commit is contained in:
Kovid Goyal
2021-01-11 17:21:07 +05:30
parent 295e8db04c
commit a30ea2b7f8
8 changed files with 227 additions and 93 deletions
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19
kitty/key_encoding.c
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@@ -160,8 +160,10 @@ encode_function_key(const KeyEvent *ev, char *output) {
static int
encode_printable_ascii_key_legacy(const KeyEvent *ev, char *output) {
char shifted_key = 0;
if (!ev->mods.value) return snprintf(output, KEY_BUFFER_SIZE, "%c", (char)ev->key);
if (ev->disambiguate) return 0;
char shifted_key = 0;
if ('a' <= ev->key && ev->key <= 'z') shifted_key = ev->key + ('A' - 'a');
switch(ev->key) {
#define S(which, val) case which: shifted_key = val; break;
@@ -169,14 +171,13 @@ encode_printable_ascii_key_legacy(const KeyEvent *ev, char *output) {
S('`', '~') S('-', '_') S('=', '+') S('[', '{') S(']', '}') S('\\', '|') S(';', ':') S('\'', '"') S(',', '<') S('.', '>') S('/', '?')
#undef S
}
if (!ev->mods.value) return snprintf(output, KEY_BUFFER_SIZE, "%c", (char)ev->key);
if (!ev->disambiguate) {
if ((ev->mods.value == ALT || ev->mods.value == (SHIFT | ALT)))
return snprintf(output, KEY_BUFFER_SIZE, "\x1b%c", (shifted_key && ev->mods.shift) ? shifted_key : (char)ev->key);
}
if (ev->mods.value == CTRL && (ev->key != 'i' && ev->key != 'm' && ev->key != '[' && ev->key != '@'))
return snprintf(output, KEY_BUFFER_SIZE, "%c", ev->key & 0x7f);
shifted_key = (shifted_key && ev->mods.shift) ? shifted_key : (char)ev->key;
if ((ev->mods.value == ALT || ev->mods.value == (SHIFT | ALT)))
return snprintf(output, KEY_BUFFER_SIZE, "\x1b%c", shifted_key);
if (ev->mods.value == CTRL)
return snprintf(output, KEY_BUFFER_SIZE, "%c", ev->key & 0x1f);
if (ev->mods.value == (CTRL | ALT))
return snprintf(output, KEY_BUFFER_SIZE, "\x1b%c", ev->key & 0x1f);
return 0;
}