/*
* Check for mouse activity, returning nonzero if we find any.
*/
static int
check_mouse_activity(SCREEN *sp, int delay EVENTLIST_2nd(_nc_eventlist * evl))
{
int rc;
#ifdef USE_TERM_DRIVER
rc = TCBOf(sp)->drv->testmouse(TCBOf(sp), delay EVENTLIST_2nd(evl));
#else
#if USE_SYSMOUSE
if ((sp->_mouse_type == M_SYSMOUSE)
&& (sp->_sysmouse_head < sp->_sysmouse_tail)) {
rc = TW_MOUSE;
} else
#endif
{
rc = _nc_timed_wait(sp,
TWAIT_MASK,
delay,
(int *) 0
EVENTLIST_2nd(evl));
#if USE_SYSMOUSE
if ((sp->_mouse_type == M_SYSMOUSE)
&& (sp->_sysmouse_head < sp->_sysmouse_tail)
&& (rc == 0)
&& (errno == EINTR)) {
rc |= TW_MOUSE;
}
#endif
}
#endif
return rc;
}
NCURSES_SP_NAME(napms) (NCURSES_SP_DCLx int ms)
{
(void) SP_PARM;
T((T_CALLED("napms(%d)"), ms));
#ifdef USE_TERM_DRIVER
CallDriver_1(SP_PARM, nap, ms);
#else /* !USE_TERM_DRIVER */
#if HAVE_NANOSLEEP
{
struct timespec request, remaining;
request.tv_sec = ms / 1000;
request.tv_nsec = (ms % 1000) * 1000000;
while (nanosleep(&request, &remaining) == -1
&& errno == EINTR) {
request = remaining;
}
}
#else
_nc_timed_wait(0, 0, ms, (int *) 0 EVENTLIST_2nd(0));
#endif
#endif /* !USE_TERM_DRIVER */
returnCode(OK);
}
/*
* Check for mouse activity, returning nonzero if we find any.
*/
static int
check_mouse_activity(SCREEN *sp, int delay EVENTLIST_2nd(_nc_eventlist * evl))
{
int rc;
#ifdef USE_TERM_DRIVER
TERMINAL_CONTROL_BLOCK *TCB = TCBOf(sp);
rc = TCBOf(sp)->drv->td_testmouse(TCBOf(sp), delay EVENTLIST_2nd(evl));
# ifdef __MINGW32__
/* if we emulate terminfo on console, we have to use the console routine */
if (IsTermInfoOnConsole(sp)) {
HANDLE fd = _nc_get_handle(sp->_ifd);
rc = _nc_mingw_testmouse(sp, fd, delay EVENTLIST_2nd(evl));
} else
# endif
rc = TCB->drv->td_testmouse(TCB, delay EVENTLIST_2nd(evl));
#else
#if USE_SYSMOUSE
if ((sp->_mouse_type == M_SYSMOUSE)
&& (sp->_sysmouse_head < sp->_sysmouse_tail)) {
rc = TW_MOUSE;
} else
#endif
{
rc = _nc_timed_wait(sp,
TWAIT_MASK,
delay,
(int *) 0
EVENTLIST_2nd(evl));
#if USE_SYSMOUSE
if ((sp->_mouse_type == M_SYSMOUSE)
&& (sp->_sysmouse_head < sp->_sysmouse_tail)
&& (rc == 0)
&& (errno == EINTR)) {
rc |= TW_MOUSE;
}
#endif
}
#endif
return rc;
}
wgetch(WINDOW *win)
{
int code;
unsigned long value;
T((T_CALLED("wgetch(%p)"), win));
code = _nc_wgetch(win,
&value,
(SP ? SP->_use_meta : 0)
EVENTLIST_2nd((_nc_eventlist *) 0));
if (code != ERR)
code = value;
returnCode(code);
}
wgetch_events(WINDOW *win, _nc_eventlist * evl)
{
int code;
unsigned long value;
T((T_CALLED("wgetch_events(%p,%p)"), win, evl));
code = _nc_wgetch(win,
&value,
SP->_use_meta
EVENTLIST_2nd(evl));
if (code != ERR)
code = value;
returnCode(code);
}
napms(int ms)
{
T((T_CALLED("napms(%d)"), ms));
#if HAVE_NANOSLEEP
{
struct timespec request, remaining;
request.tv_sec = ms / 1000;
request.tv_nsec = (ms % 1000) * 1000000;
while (nanosleep(&request, &remaining) == -1
&& errno == EINTR) {
request = remaining;
}
}
#else
_nc_timed_wait(0, 0, ms, (int *) 0 EVENTLIST_2nd(0));
#endif
returnCode(OK);
}
/*
* Check for mouse activity, returning nonzero if we find any.
*/
static int
check_mouse_activity(int delay EVENTLIST_2nd(_nc_eventlist * evl))
{
int rc;
#if USE_SYSMOUSE
if ((SP->_mouse_type == M_SYSMOUSE)
&& (SP->_sysmouse_head < SP->_sysmouse_tail)) {
return 2;
}
#endif
rc = _nc_timed_wait(TWAIT_MASK, delay, (int *) 0 EVENTLIST_2nd(evl));
#if USE_SYSMOUSE
if ((SP->_mouse_type == M_SYSMOUSE)
&& (SP->_sysmouse_head < SP->_sysmouse_tail)
&& (rc == 0)
&& (errno == EINTR)) {
rc |= 2;
}
#endif
return rc;
}
peek = head;
} else {
h_inc();
}
#ifdef TRACE
if (USE_TRACEF(TRACE_IEVENT)) {
_nc_fifo_dump(sp);
_nc_unlock_global(tracef);
}
#endif
return ch;
}
static NCURSES_INLINE int
fifo_push(SCREEN *sp EVENTLIST_2nd(_nc_eventlist * evl))
{
int n;
int ch = 0;
int mask = 0;
(void) mask;
if (tail < 0)
return ERR;
#ifdef HIDE_EINTR
again:
errno = 0;
#endif
#ifdef NCURSES_WGETCH_EVENTS
wget_wch(WINDOW *win, wint_t *result)
{
SCREEN *sp;
int code;
char buffer[(MB_LEN_MAX * 9) + 1]; /* allow some redundant shifts */
int status;
size_t count = 0;
int value = 0;
wchar_t wch;
#ifndef state_unused
mbstate_t state;
#endif
T((T_CALLED("wget_wch(%p)"), (void *) win));
/*
* We can get a stream of single-byte characters and KEY_xxx codes from
* _nc_wgetch(), while we want to return a wide character or KEY_xxx code.
*/
_nc_lock_global(curses);
sp = _nc_screen_of(win);
if (sp != 0) {
for (;;) {
T(("reading %d of %d", (int) count + 1, (int) sizeof(buffer)));
code = _nc_wgetch(win, &value, TRUE EVENTLIST_2nd((_nc_eventlist
*) 0));
if (code == ERR) {
break;
} else if (code == KEY_CODE_YES) {
/*
* If we were processing an incomplete multibyte character,
* return an error since we have a KEY_xxx code which
* interrupts it. For some cases, we could improve this by
* writing a new version of lib_getch.c(!), but it is not clear
* whether the improvement would be worth the effort.
*/
if (count != 0) {
safe_ungetch(SP_PARM, value);
code = ERR;
}
break;
} else if (count + 1 >= sizeof(buffer)) {
safe_ungetch(SP_PARM, value);
code = ERR;
break;
} else {
buffer[count++] = (char) UChar(value);
reset_mbytes(state);
status = count_mbytes(buffer, count, state);
if (status >= 0) {
reset_mbytes(state);
if (check_mbytes(wch, buffer, count, state) != status) {
code = ERR; /* the two calls should match */
safe_ungetch(SP_PARM, value);
}
value = wch;
break;
}
}
}
} else {
code = ERR;
}
*result = (wint_t) value;
_nc_unlock_global(curses);
T(("result %#o", value));
returnCode(code);
}
static int
kgetch(EVENTLIST_0th(_nc_eventlist * evl))
{
struct tries *ptr;
int ch = 0;
int timeleft = ESCDELAY;
TR(TRACE_IEVENT, ("kgetch() called"));
ptr = SP->_keytry;
for (;;) {
if (cooked_key_in_fifo() && SP->_fifo[head] >= KEY_MIN) {
break;
} else if (!raw_key_in_fifo()) {
ch = fifo_push(EVENTLIST_1st(evl));
if (ch == ERR) {
peek = head; /* the keys stay uninterpreted */
return ERR;
}
#ifdef NCURSES_WGETCH_EVENTS
else if (ch == KEY_EVENT) {
peek = head; /* the keys stay uninterpreted */
return fifo_pull(); /* Remove KEY_EVENT from the queue */
}
#endif
}
ch = fifo_peek();
if (ch >= KEY_MIN) {
/* If not first in queue, somebody put this key there on purpose in
* emergency. Consider it higher priority than the unfinished
* keysequence we are parsing.
*/
peek = head;
/* assume the key is the last in fifo */
t_dec(); /* remove the key */
return ch;
}
TR(TRACE_IEVENT, ("ch: %s", _tracechar((unsigned char) ch)));
while ((ptr != NULL) && (ptr->ch != (unsigned char) ch))
ptr = ptr->sibling;
if (ptr == NULL) {
TR(TRACE_IEVENT, ("ptr is null"));
break;
}
TR(TRACE_IEVENT, ("ptr=%p, ch=%d, value=%d",
ptr, ptr->ch, ptr->value));
if (ptr->value != 0) { /* sequence terminated */
TR(TRACE_IEVENT, ("end of sequence"));
if (peek == tail)
fifo_clear();
else
head = peek;
return (ptr->value);
}
ptr = ptr->child;
if (!raw_key_in_fifo()) {
int rc;
TR(TRACE_IEVENT, ("waiting for rest of sequence"));
rc = check_mouse_activity(timeleft EVENTLIST_2nd(evl));
#ifdef NCURSES_WGETCH_EVENTS
if (rc & 4) {
TR(TRACE_IEVENT, ("interrupted by a user event"));
/* FIXME Should have preserved remainder timeleft for reusal... */
peek = head; /* Restart interpreting later */
return KEY_EVENT;
}
#endif
if (!rc) {
TR(TRACE_IEVENT, ("ran out of time"));
break;
}
}
}
ch = fifo_pull();
peek = head;
return ch;
}
_nc_wgetch(WINDOW *win,
unsigned long *result,
int use_meta
EVENTLIST_2nd(_nc_eventlist * evl))
{
int ch;
#ifdef NCURSES_WGETCH_EVENTS
long event_delay = -1;
#endif
T((T_CALLED("_nc_wgetch(%p)"), win));
*result = 0;
if (win == 0 || SP == 0)
returnCode(ERR);
if (cooked_key_in_fifo()) {
if (wgetch_should_refresh(win))
wrefresh(win);
*result = fifo_pull();
returnCode(OK);
}
#ifdef NCURSES_WGETCH_EVENTS
if (evl && (evl->count == 0))
evl = NULL;
event_delay = _nc_eventlist_timeout(evl);
#endif
/*
* 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->_notty &&
!SP->_raw &&
!SP->_cbreak &&
!SP->_called_wgetch) {
char buf[MAXCOLUMNS], *sp;
int rc;
TR(TRACE_IEVENT, ("filling queue in cooked mode"));
SP->_called_wgetch = TRUE;
rc = wgetnstr(win, buf, MAXCOLUMNS);
SP->_called_wgetch = FALSE;
/* ungetch in reverse order */
#ifdef NCURSES_WGETCH_EVENTS
if (rc != KEY_EVENT)
#endif
ungetch('\n');
for (sp = buf + strlen(buf); sp > buf; sp--)
ungetch(sp[-1]);
#ifdef NCURSES_WGETCH_EVENTS
/* Return it first */
if (rc == KEY_EVENT) {
*result = rc;
returnCode(OK);
}
#endif
*result = fifo_pull();
returnCode(OK);
}
if (win->_use_keypad != SP->_keypad_on)
_nc_keypad(win->_use_keypad);
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;
#ifdef NCURSES_WGETCH_EVENTS
if (event_delay >= 0 && delay > event_delay)
delay = event_delay;
#endif
TR(TRACE_IEVENT, ("delay is %d milliseconds", delay));
if (head == -1) { /* fifo is empty */
int rc = check_mouse_activity(delay EVENTLIST_2nd(evl));
#ifdef NCURSES_WGETCH_EVENTS
if (rc & 4) {
*result = KEY_EVENT;
returnCode(OK);
}
#endif
if (!rc)
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;
int rc;
do {
ch = kgetch(EVENTLIST_1st(evl));
if (ch == KEY_MOUSE) {
++runcount;
if (SP->_mouse_inline(SP))
break;
}
if (SP->_maxclick < 0)
break;
} while
(ch == KEY_MOUSE
&& (((rc = check_mouse_activity(SP->_maxclick
EVENTLIST_2nd(evl))) != 0
&& !(rc & 4))
|| !SP->_mouse_parse(runcount)));
#ifdef NCURSES_WGETCH_EVENTS
if ((rc & 4) && !ch == KEY_EVENT) {
ungetch(ch);
ch = KEY_EVENT;
}
#endif
if (runcount > 0 && ch != KEY_MOUSE) {
#ifdef NCURSES_WGETCH_EVENTS
/* mouse event sequence ended by an event, report event */
if (ch == KEY_EVENT) {
ungetch(KEY_MOUSE); /* FIXME This interrupts a gesture... */
} else
#endif
{
/* mouse event sequence ended by keystroke, store keystroke */
ungetch(ch);
ch = KEY_MOUSE;
}
}
} else {
if (head == -1)
fifo_push(EVENTLIST_1st(evl));
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()) {
*result = fifo_pull();
returnCode(*result >= KEY_MIN ? KEY_CODE_YES : OK);
}
}
#endif
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 (!use_meta)
if ((ch < KEY_MIN) && (ch & 0x80))
ch &= 0x7f;
T(("wgetch returning : %s", _tracechar(ch)));
*result = ch;
returnCode(ch >= KEY_MIN ? KEY_CODE_YES : OK);
}
static inline int
fifo_push(EVENTLIST_0th(_nc_eventlist * evl))
{
int n;
int ch = 0;
int mask = 0;
(void) mask;
if (tail == -1)
return ERR;
#ifdef HIDE_EINTR
again:
errno = 0;
#endif
#ifdef NCURSES_WGETCH_EVENTS
if (evl
#if USE_GPM_SUPPORT || USE_EMX_MOUSE || USE_SYSMOUSE
|| (SP->_mouse_fd >= 0)
#endif
) {
mask = check_mouse_activity(-1 EVENTLIST_2nd(evl));
} else
mask = 0;
if (mask & 4) {
T(("fifo_push: ungetch KEY_EVENT"));
ungetch(KEY_EVENT);
return KEY_EVENT;
}
#elif USE_GPM_SUPPORT || USE_EMX_MOUSE || USE_SYSMOUSE
if (SP->_mouse_fd >= 0) {
mask = check_mouse_activity(-1 EVENTLIST_2nd(evl));
}
#endif
#if USE_GPM_SUPPORT || USE_EMX_MOUSE
if ((SP->_mouse_fd >= 0) && (mask & 2)) {
SP->_mouse_event(SP);
ch = KEY_MOUSE;
n = 1;
} else
#endif
#if USE_SYSMOUSE
if ((SP->_mouse_type == M_SYSMOUSE)
&& (SP->_sysmouse_head < SP->_sysmouse_tail)) {
SP->_mouse_event(SP);
ch = KEY_MOUSE;
n = 1;
} else if ((SP->_mouse_type == M_SYSMOUSE)
&& (mask <= 0) && errno == EINTR) {
SP->_mouse_event(SP);
ch = KEY_MOUSE;
n = 1;
} else
#endif
{ /* Can block... */
unsigned char c2 = 0;
n = read(SP->_ifd, &c2, 1);
ch = c2;
}
#ifdef HIDE_EINTR
/*
* Under System V curses with non-restarting signals, getch() returns
* with value ERR when a handled signal keeps it from completing.
* If signals restart system calls, OTOH, the signal is invisible
* except to its handler.
*
* We don't want this difference to show. This piece of code
* tries to make it look like we always have restarting signals.
*/
if (n <= 0 && errno == EINTR)
goto again;
#endif
if ((n == -1) || (n == 0)) {
TR(TRACE_IEVENT, ("read(%d,&ch,1)=%d, errno=%d", SP->_ifd, n, errno));
ch = ERR;
}
TR(TRACE_IEVENT, ("read %d characters", n));
SP->_fifo[tail] = ch;
SP->_fifohold = 0;
if (head == -1)
head = peek = tail;
t_inc();
TR(TRACE_IEVENT, ("pushed %s at %d", _tracechar(ch), tail));
#ifdef TRACE
if (_nc_tracing & TRACE_IEVENT)
_nc_fifo_dump();
#endif
return ch;
}
