/*
* Process an event
*/
static errr Term_xtra_cap_event(int v)
{
int i, arg;
char buf[2];
/* Wait */
if (v)
{
/* Wait for one byte */
i = read(0, buf, 1);
/* Hack -- Handle "errors" */
if ((i <= 0) && (errno != EINTR)) exit_game_panic();
}
/* Do not wait */
else
{
/* Get the current flags for stdin */
if ((arg = fcntl(0, F_GETFL, 0)) < 1) return (1);
/* Tell stdin not to block */
if (fcntl(0, F_SETFL, arg | O_NDELAY) < 0) return (1);
/* Read one byte, if possible */
i = read(0, buf, 1);
/* Replace the flags for stdin */
if (fcntl(0, F_SETFL, arg)) return (1);
}
/* No keys ready */
if ((i != 1) || (!buf[0])) return (1);
/* Enqueue the keypress */
Term_keypress(buf[0]);
/* Success */
return (0);
}
/*
* Process events, with optional wait
*/
static errr Term_xtra_gcu_event(int v)
{
int i, j, k;
/* Wait */
if (v)
{
/* Get a keypress; we use halfdelay(1) so if the user takes more */
/* than 0.1 seconds we get a chance to do updates. */
halfdelay(2);
i = getch();
while (i == ERR)
{
i = getch();
idle_update();
}
cbreak();
/* Mega-Hack -- allow graceful "suspend" */
for (k = 0; (k < 10) && (i == ERR); k++) i = getch();
/* Broken input is special */
if (i == ERR) exit_game_panic();
if (i == EOF) exit_game_panic();
}
/* Do not wait */
else
{
/* Do not wait for it */
nodelay(stdscr, TRUE);
/* Check for keypresses */
i = getch();
/* Wait for it next time */
nodelay(stdscr, FALSE);
/* None ready */
if (i == ERR) return (1);
if (i == EOF) return (1);
}
/* Not sure if this is portable to non-ncurses platforms */
#ifdef USE_NCURSES
if (i == KEY_RESIZE)
{
/* wait until we go one second (10 deci-seconds) before actually
* doing the resizing. users often end up triggering multiple
* KEY_RESIZE events while changing window size. */
halfdelay(10);
do {
i = getch();
} while (i == KEY_RESIZE);
cbreak();
do_gcu_resize();
if (i == ERR) return (1);
}
#endif
/* uncomment to debug keycode issues */
#if 0
printw("key %d", i);
wrefresh(stdscr);
#endif
/* This might be a bad idea, but...
*
* Here we try to second-guess ncurses. In some cases, keypad() mode will
* fail to translate multi-byte escape sequences into things like number-
* pad actions, function keys, etc. So we can hardcode a small list of some
* of the most common sequences here, just in case.
*
* Notice that we turn nodelay() on. This means, that we won't accidentally
* interpret sequences as valid unless all the bytes are immediately
* available; this seems like an acceptable risk to fix problems associated
* with various terminal emulators (I'm looking at you PuTTY).
*/
if (i == 27) /* ESC */
{
nodelay(stdscr, TRUE);
j = getch();
switch (j)
{
case 'O':
{
k = getch();
switch (k)
{
/* PuTTY number pad */
case 'q': i = '1'; break;
case 'r': i = '2'; break;
case 's': i = '3'; break;
case 't': i = '4'; break;
case 'u': i = '5'; break;
case 'v': i = '6'; break;
case 'w': i = '7'; break;
case 'x': i = '8'; break;
case 'y': i = '9'; break;
/* no match */
case ERR: break;
default: ungetch(k); ungetch(j);
}
break;
}
/* no match */
case ERR: break;
default: ungetch(j);
}
nodelay(stdscr, FALSE);
}
#ifdef KEY_DOWN
/* Handle arrow keys */
switch (i)
{
case KEY_DOWN: i = ARROW_DOWN; break;
case KEY_UP: i = ARROW_UP; break;
case KEY_LEFT: i = ARROW_LEFT; break;
case KEY_RIGHT: i = ARROW_RIGHT; break;
default:
if (i < KEY_MIN) break;
/* Mega-Hack -- Fold, spindle, and mutilate
* the keys to fit in 7 bits.
*/
if (i >= 252) i = KEY_F(63) - (i - 252);
if (i >= ARROW_DOWN) i += 4;
i = 128 + (i & 127);
break;
}
#endif
/* Enqueue the keypress */
Term_keypress(i);
/* Success */
return (0);
}
/*
* Process events, with optional wait
*/
static errr Term_xtra_gcu_event(int v)
{
int i, k;
/* Wait */
if (v)
{
/* Paranoia -- Wait for it */
nodelay(stdscr, FALSE);
/* Get a keypress */
i = getch();
/* Mega-Hack -- allow graceful "suspend" */
for (k = 0; (k < 10) && (i == ERR); k++) i = getch();
/* Broken input is special */
if (i == ERR) exit_game_panic();
if (i == EOF) exit_game_panic();
}
/* Do not wait */
else
{
/* Do not wait for it */
nodelay(stdscr, TRUE);
/* Check for keypresses */
i = getch();
/* Wait for it next time */
nodelay(stdscr, FALSE);
/* None ready */
if (i == ERR) return (1);
if (i == EOF) return (1);
}
/* Issue: Currently, we map curses escape sequences via the macro processing system (see pref-gcu.prf).
* If you don't already know, this is required for things like arrow keys and the numpad and what not.
* The advantage of this approach is that users can (theoretically) edit the pref file themselves in
* the event that their terminal is sending a different escape sequence for some reason. All good, right?
* Well, except for those places in the code that *disable* macro processing! This includes all user prompts,
* the store UI (TODO) and the autopicker. Now, it's rather disconcerting if arrow keys aren't available in
* a text editor or if the user can't correct typos with backspace!
*
* The idea of translating here is from current Vanilla
* TODO */
/* Backspace */
if (i == 0x7F)
i = '\b';
if (i == 27) /* \e is not ansi c */
{
/*
char buf[255];
int cb = _getstr(buf, 255);
if (cb > 0)
{
if (strcmp(buf, "[3~") == 0)
i = '.';
else if (strcmp(buf, "[2~") == 0)
i = '0';
else if (strcmp(buf, "[4~") == 0)
i = '1';
else if (strcmp(buf, "[F") == 0)
i = '1';
else if (strcmp(buf, "[B") == 0)
i = '2';
...
else
_ungetstr(buf, cb);
}
CTK: Actually, I'm not so sure this is going to work. Arrow keys need
to be known as such by the game engine not translated to numbers. And
looking at what main-win.c and main-x11.c do to get this working is ...
uh, a bit overwhelming. So this is on hold for now ...
*/
}
/* Enqueue the keypress */
Term_keypress(i);
/* Success */
return (0);
}