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precompute virtual keycode translations

This commit is contained in:
cy384 2021-04-21 13:57:45 -04:00
parent 7284f40059
commit 5ee3e7104b
1 changed files with 23 additions and 6 deletions
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29
ssheven.c
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@ -34,6 +34,25 @@ enum THREAD_STATE read_thread_state = UNINTIALIZED;
const uint8_t ascii_to_control_code[255] = {255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 27, 28, 29, 30, 31, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255};
// maps virtual keycodes to (hopefully) ascii characters
// this will probably be weird for non-letter keypresses
uint8_t keycode_to_ascii[255] = {0};
void generate_key_mapping(void)
{
// TODO this sucks
// gets the currently loaded keymap resource
// passes in the virtual keycode but without any previous state or modifiers
// ignores the second byte if we're currently using a multibyte lang
void* kchr = (void*)GetScriptManagerVariable(smKCHRCache);
for (uint16_t i = 0; i < 255; i++)
{
keycode_to_ascii[i] = KeyTranslate(kchr, i, 0) & 0xff;
}
}
void set_window_title(WindowPtr w, const char* c_name)
{
Str255 pascal_name;
@ -498,12 +517,8 @@ int handle_keypress(EventRecord* event)
}
else if (c)
{
// TODO this sucks
// it does several things:
// gets the currently loaded keymap
// uses it to translate the virtual keycode without modifiers or state
// ignores the second byte if we're currently using a multibyte lang
uint8_t unmodified_key = KeyTranslate((void*)GetScriptManagerVariable(smKCHRCache), (event->message & keyCodeMask)>>8, 0) & 0xff;
// get the unmodified version of the keypress
uint8_t unmodified_key = keycode_to_ascii[(event->message & keyCodeMask)>>8];
// if we have a control code for this key
if (event->modifiers & controlKey && ascii_to_control_code[unmodified_key] != 255)
@ -1125,6 +1140,8 @@ int main(int argc, char** argv)
DrawMenuBar();
generate_key_mapping();
console_setup();
char* logo = " _____ _____ _ _\r\n"