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Fix numpad fn keys (#532) 

* Fix the numeric keypad function keys

As suggested in:

https://github.com/lite-xl/lite-xl/issues/64

* Apply scancode lookup to KEY_UP events
This commit is contained in:
Francesco 2021-09-17 22:38:09 +02:00 committed by GitHub
parent f6b6634868
commit c018ca3c60
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 20 additions and 6 deletions
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26
src/api/system.c
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@ -26,14 +26,11 @@ static const char* button_name(int button) {
}
static char* key_name(char *dst, int sym) {
strcpy(dst, SDL_GetKeyName(sym));
char *p = dst;
static void str_tolower(char *p) {
while (*p) {
*p = tolower(*p);
p++;
}
return dst;
}
struct HitTestInfo {
@ -93,6 +90,23 @@ static SDL_HitTestResult SDLCALL hit_test(SDL_Window *window, const SDL_Point *p
return SDL_HITTEST_NORMAL;
}
static const char *numpad[] = { "end", "down", "pagedown", "left", "", "right", "home", "up", "pageup", "ins", "delete" };
static const char *get_key_name(const SDL_Event *e, char *buf) {
SDL_Scancode scancode = e->key.keysym.scancode;
/* Is the scancode from the keypad and the number-lock off?
** We assume that SDL_SCANCODE_KP_1 up to SDL_SCANCODE_KP_9 and SDL_SCANCODE_KP_0
** and SDL_SCANCODE_KP_PERIOD are declared in SDL2 in that order. */
if (scancode >= SDL_SCANCODE_KP_1 && scancode <= SDL_SCANCODE_KP_1 + 10 &&
!(KMOD_NUM & SDL_GetModState())) {
return numpad[scancode - SDL_SCANCODE_KP_1];
} else {
strcpy(buf, SDL_GetKeyName(e->key.keysym.sym));
str_tolower(buf);
return buf;
}
}
static int f_poll_event(lua_State *L) {
char buf[16];
int mx, my, wx, wy;
@ -162,7 +176,7 @@ top:
}
#endif
lua_pushstring(L, "keypressed");
lua_pushstring(L, key_name(buf, e.key.keysym.sym));
lua_pushstring(L, get_key_name(&e, buf));
return 2;
case SDL_KEYUP:
@ -176,7 +190,7 @@ top:
}
#endif
lua_pushstring(L, "keyreleased");
lua_pushstring(L, key_name(buf, e.key.keysym.sym));
lua_pushstring(L, get_key_name(&e, buf));
return 2;
case SDL_TEXTINPUT: