_nc_fifo_dump(void)
{
int i;
T(("head = %d, tail = %d, peek = %d", head, tail, peek));
for (i = 0; i < 10; i++)
T(("char %d = %s", i, _trace_key(SP->_fifo[i])));
}
int
wgetch(WINDOW *win)
{
int ch;
T((T_CALLED("wgetch(%p)"), win));
if (!win)
returnCode(ERR);
if (cooked_key_in_fifo())
{
if (wgetch_should_refresh(win))
wrefresh(win);
ch = fifo_pull();
T(("wgetch returning (pre-cooked): %#x = %s", ch, _trace_key(ch));)
returnCode(ch);
}
int
wgetch(WINDOW *win)
{
int ch;
T((T_CALLED("wgetch(%p)"), win));
if (!win)
returnCode(ERR);
if (cooked_key_in_fifo()) {
if (wgetch_should_refresh(win))
wrefresh(win);
ch = fifo_pull();
T(("wgetch returning (pre-cooked): %#x = %s", ch, _trace_key(ch)));
returnCode(ch);
}
/*
* Handle cooked mode. Grab a string from the screen,
* stuff its contents in the FIFO queue, and pop off
* the first character to return it.
*/
if (head == -1 && !SP->_raw && !SP->_cbreak) {
char buf[MAXCOLUMNS], *sp;
TR(TRACE_IEVENT, ("filling queue in cooked mode"));
wgetnstr(win, buf, MAXCOLUMNS);
/* ungetch in reverse order */
ungetch('\n');
for (sp = buf + strlen(buf); sp > buf; sp--)
ungetch(sp[-1]);
returnCode(fifo_pull());
}
if (wgetch_should_refresh(win))
wrefresh(win);
if (!win->_notimeout && (win->_delay >= 0 || SP->_cbreak > 1)) {
int delay;
TR(TRACE_IEVENT, ("timed delay in wgetch()"));
if (SP->_cbreak > 1)
delay = (SP->_cbreak - 1) * 100;
else
delay = win->_delay;
TR(TRACE_IEVENT, ("delay is %d milliseconds", delay));
if (head == -1) /* fifo is empty */
if (!_nc_timed_wait(3, delay, (int *) 0))
returnCode(ERR);
/* else go on to read data available */
}
if (win->_use_keypad) {
/*
* This is tricky. We only want to get special-key
* events one at a time. But we want to accumulate
* mouse events until either (a) the mouse logic tells
* us it's picked up a complete gesture, or (b)
* there's a detectable time lapse after one.
*
* Note: if the mouse code starts failing to compose
* press/release events into clicks, you should probably
* increase the wait with mouseinterval().
*/
int runcount = 0;
do {
ch = kgetch(win);
if (ch == KEY_MOUSE) {
++runcount;
if (SP->_mouse_inline(SP))
break;
}
} while
(ch == KEY_MOUSE
&& (_nc_timed_wait(3, SP->_maxclick, (int *) 0)
|| !SP->_mouse_parse(runcount)));
if (runcount > 0 && ch != KEY_MOUSE) {
/* mouse event sequence ended by keystroke, push it */
ungetch(ch);
ch = KEY_MOUSE;
}
} else {
if (head == -1)
fifo_push();
ch = fifo_pull();
}
if (ch == ERR) {
#if USE_SIZECHANGE
if (SP->_sig_winch) {
_nc_update_screensize();
/* resizeterm can push KEY_RESIZE */
if (cooked_key_in_fifo()) {
ch = fifo_pull();
T(("wgetch returning (pre-cooked): %#x = %s", ch, _trace_key(ch)));
returnCode(ch);
}
}
#endif
T(("wgetch returning ERR"));
returnCode(ERR);
}
/*
* If echo() is in effect, display the printable version of the
* key on the screen. Carriage return and backspace are treated
* specially by Solaris curses:
*
* If carriage return is defined as a function key in the
* terminfo, e.g., kent, then Solaris may return either ^J (or ^M
* if nonl() is set) or KEY_ENTER depending on the echo() mode.
* We echo before translating carriage return based on nonl(),
* since the visual result simply moves the cursor to column 0.
*
* Backspace is a different matter. Solaris curses does not
* translate it to KEY_BACKSPACE if kbs=^H. This does not depend
* on the stty modes, but appears to be a hardcoded special case.
* This is a difference from ncurses, which uses the terminfo entry.
* However, we provide the same visual result as Solaris, moving the
* cursor to the left.
*/
if (SP->_echo && !(win->_flags & _ISPAD)) {
chtype backup = (ch == KEY_BACKSPACE) ? '\b' : ch;
if (backup < KEY_MIN)
wechochar(win, backup);
}
/*
* Simulate ICRNL mode
*/
if ((ch == '\r') && SP->_nl)
ch = '\n';
/* Strip 8th-bit if so desired. We do this only for characters that
* are in the range 128-255, to provide compatibility with terminals
* that display only 7-bit characters. Note that 'ch' may be a
* function key at this point, so we mustn't strip _those_.
*/
if ((ch < KEY_MIN) && (ch & 0x80))
if (!SP->_use_meta)
ch &= 0x7f;
T(("wgetch returning : %#x = %s", ch, _trace_key(ch)));
returnCode(ch);
}
