/****************************************************************************
- * Copyright (c) 1998,1999,2000 Free Software Foundation, Inc. *
+ * Copyright (c) 1998-2006,2007 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
/****************************************************************************
* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
+ * and: Thomas E. Dickey 1996-on *
****************************************************************************/
/*
#include <curses.priv.h>
-MODULE_ID("$Id: lib_getch.c,v 1.50 2000/10/09 23:53:57 Ilya.Zakharevich Exp $")
+MODULE_ID("$Id: lib_getch.c,v 1.80 2007/09/29 20:39:34 tom Exp $")
#include <fifo_defs.h>
-int ESCDELAY = 1000; /* max interval betw. chars in funkeys, in millisecs */
+#if USE_REENTRANT
+NCURSES_EXPORT(int)
+NCURSES_PUBLIC_VAR(ESCDELAY) (void)
+{
+ return SP ? SP->_ESCDELAY : 1000;
+}
+#else
+NCURSES_EXPORT_VAR(int)
+ESCDELAY = 1000; /* max interval betw. chars in funkeys, in millisecs */
+#endif
-static inline int
+#ifdef NCURSES_WGETCH_EVENTS
+#define TWAIT_MASK 7
+#else
+#define TWAIT_MASK 3
+#endif
+
+/*
+ * 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;
+}
+
+static NCURSES_INLINE int
fifo_peek(void)
{
int ch = SP->_fifo[peek];
return ch;
}
-static inline int
+static NCURSES_INLINE int
fifo_pull(void)
{
int ch;
ch = SP->_fifo[head];
- TR(TRACE_IEVENT, ("pulling %d from %d", ch, head));
+ TR(TRACE_IEVENT, ("pulling %s from %d", _tracechar(ch), head));
if (peek == head) {
h_inc();
h_inc();
#ifdef TRACE
- if (_nc_tracing & TRACE_IEVENT)
+ if (USE_TRACEF(TRACE_IEVENT)) {
_nc_fifo_dump();
+ _nc_unlock_global(tracef);
+ }
#endif
return ch;
}
-static inline int
-fifo_push(void)
+static NCURSES_INLINE int
+fifo_push(EVENTLIST_0th(_nc_eventlist * evl))
{
int n;
- unsigned int ch;
+ int ch = 0;
+ int mask = 0;
+ (void) mask;
if (tail == -1)
return ERR;
errno = 0;
#endif
-#if USE_GPM_SUPPORT || defined(USE_EMX_MOUSE)
- if ((SP->_mouse_fd >= 0)
- && (_nc_timed_wait(3, -1, (int *) 0) & 2)) {
+#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 & 0xff;
+ ch = c2;
}
#ifdef HIDE_EINTR
if (head == -1)
head = peek = tail;
t_inc();
- TR(TRACE_IEVENT, ("pushed %#x at %d", ch, tail));
+ TR(TRACE_IEVENT, ("pushed %s at %d", _tracechar(ch), tail));
#ifdef TRACE
- if (_nc_tracing & TRACE_IEVENT)
+ if (USE_TRACEF(TRACE_IEVENT)) {
_nc_fifo_dump();
+ _nc_unlock_global(tracef);
+ }
#endif
return ch;
}
-static inline void
+static NCURSES_INLINE void
fifo_clear(void)
{
- int i;
- for (i = 0; i < FIFO_SIZE; i++)
- SP->_fifo[i] = 0;
+ memset(SP->_fifo, 0, sizeof(SP->_fifo));
head = -1;
tail = peek = 0;
}
-static int kgetch(WINDOW *);
+static int kgetch(EVENTLIST_0th(_nc_eventlist * evl));
#define wgetch_should_refresh(win) (\
(is_wintouched(win) || (win->_flags & _HASMOVED)) \
&& !(win->_flags & _ISPAD))
-int
-wgetch(WINDOW *win)
+NCURSES_EXPORT(int)
+_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("wgetch(%p)"), win));
+ T((T_CALLED("_nc_wgetch(%p)"), win));
- if (!win)
+ *result = 0;
+ if (win == 0 || SP == 0) {
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);
+ *result = fifo_pull();
+ returnCode(*result >= KEY_MIN ? KEY_CODE_YES : 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->_raw && !SP->_cbreak) {
+ 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"));
- wgetnstr(win, buf, MAXCOLUMNS);
+ SP->_called_wgetch = TRUE;
+ rc = wgetnstr(win, buf, MAXCOLUMNS);
+ SP->_called_wgetch = FALSE;
/* ungetch in reverse order */
- ungetch('\n');
+#ifdef NCURSES_WGETCH_EVENTS
+ if (rc != KEY_EVENT)
+#endif
+ ungetch('\n');
for (sp = buf + strlen(buf); sp > buf; sp--)
ungetch(sp[-1]);
- returnCode(fifo_pull());
+#ifdef NCURSES_WGETCH_EVENTS
+ /* Return it first */
+ if (rc == KEY_EVENT) {
+ *result = rc;
+ } else
+#endif
+ *result = fifo_pull();
+ returnCode(*result >= KEY_MIN ? KEY_CODE_YES : 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;
+ if (head == -1) { /* fifo is empty */
+ int delay;
+ int rc;
+
+ 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, ("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));
- TR(TRACE_IEVENT, ("delay is %d milliseconds", delay));
+ rc = check_mouse_activity(delay EVENTLIST_2nd(evl));
- if (head == -1) /* fifo is empty */
- if (!_nc_timed_wait(3, delay, (int *) 0))
+#ifdef NCURSES_WGETCH_EVENTS
+ if (rc & 4) {
+ *result = KEY_EVENT;
+ returnCode(KEY_CODE_YES);
+ }
+#endif
+ if (!rc)
returnCode(ERR);
+ }
/* else go on to read data available */
}
* increase the wait with mouseinterval().
*/
int runcount = 0;
+ int rc;
do {
- ch = kgetch(win);
+ 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
- && (_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 */
+ && (((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_MOUSE;
+ 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();
+ fifo_push(EVENTLIST_1st(evl));
ch = fifo_pull();
}
if (ch == ERR) {
#if USE_SIZECHANGE
- if (SP->_sig_winch) {
+ if (_nc_handle_sigwinch(FALSE)) {
_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);
+ *result = fifo_pull();
+ returnCode(*result >= KEY_MIN ? KEY_CODE_YES : OK);
}
}
#endif
- T(("wgetch returning ERR"));
returnCode(ERR);
}
* 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)
+ if (!use_meta)
+ if ((ch < KEY_MIN) && (ch & 0x80))
ch &= 0x7f;
- T(("wgetch returning : %#x = %s", ch, _trace_key(ch)));
+ T(("wgetch returning : %s", _tracechar(ch)));
+
+ *result = ch;
+ returnCode(ch >= KEY_MIN ? KEY_CODE_YES : OK);
+}
+
+#ifdef NCURSES_WGETCH_EVENTS
+NCURSES_EXPORT(int)
+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);
+}
+#endif
+
+NCURSES_EXPORT(int)
+wgetch(WINDOW *win)
+{
+ int code;
+ unsigned long value;
- returnCode(ch);
+ 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);
}
/*
** sequence is received by the time the alarm goes off, pass through
** the sequence gotten so far.
**
-** This function must be called when there is no cooked keys in queue.
+** This function must be called when there are no cooked keys in queue.
** (that is head==-1 || peek==head)
**
*/
static int
-kgetch(WINDOW *win GCC_UNUSED)
+kgetch(EVENTLIST_0th(_nc_eventlist * evl))
{
- struct tries *ptr;
+ TRIES *ptr;
int ch = 0;
int timeleft = ESCDELAY;
- TR(TRACE_IEVENT, ("kgetch(%p) called", win));
+ TR(TRACE_IEVENT, ("kgetch() called"));
ptr = SP->_keytry;
for (;;) {
- if (!raw_key_in_fifo()) {
- if (fifo_push() == ERR) {
+ 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", _trace_key((unsigned char) ch)));
+ TR(TRACE_IEVENT, ("ch: %s", _tracechar((unsigned char) ch)));
while ((ptr != NULL) && (ptr->ch != (unsigned char) ch))
ptr = ptr->sibling;
-#ifdef TRACE
+
if (ptr == NULL) {
TR(TRACE_IEVENT, ("ptr is null"));
- } else
- TR(TRACE_IEVENT, ("ptr=%p, ch=%d, value=%d",
- ptr, ptr->ch, ptr->value));
-#endif /* TRACE */
-
- if (ptr == 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"));
ptr = ptr->child;
if (!raw_key_in_fifo()) {
+ int rc;
+
TR(TRACE_IEVENT, ("waiting for rest of sequence"));
- if (!_nc_timed_wait(3, timeleft, &timeleft)) {
+ 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 reuse... */
+ peek = head; /* Restart interpreting later */
+ return KEY_EVENT;
+ }
+#endif
+ if (!rc) {
TR(TRACE_IEVENT, ("ran out of time"));
break;
}
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