X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Fbase%2Flib_getch.c;h=e66602c28ce1c60fc8df896a626eaa82b65a7c66;hp=f67bf9a35f7725eb2f8b65219c2d461fe4cf1058;hb=b6d7123594f6959ad0a6602b3952d9e6abe261a0;hpb=c633e5103a29a38532cf1925257b91cea33fd090 diff --git a/ncurses/base/lib_getch.c b/ncurses/base/lib_getch.c index f67bf9a3..e66602c2 100644 --- a/ncurses/base/lib_getch.c +++ b/ncurses/base/lib_getch.c @@ -1,5 +1,5 @@ /**************************************************************************** - * Copyright (c) 1998,1999,2000 Free Software Foundation, Inc. * + * Copyright (c) 1998-2005,2006 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 * @@ -29,6 +29,7 @@ /**************************************************************************** * Author: Zeyd M. Ben-Halim 1992,1995 * * and: Eric S. Raymond * + * and: Thomas E. Dickey 1996-on * ****************************************************************************/ /* @@ -40,13 +41,46 @@ #include -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 1.77 2007/02/25 00:43:54 tom Exp $") #include -int ESCDELAY = 1000; /* max interval betw. chars in funkeys, in millisecs */ +NCURSES_EXPORT_VAR(int) +ESCDELAY = 1000; /* max interval betw. chars in funkeys, in millisecs */ -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]; @@ -56,12 +90,12 @@ fifo_peek(void) 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(); @@ -76,12 +110,14 @@ fifo_pull(void) 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; @@ -90,18 +126,51 @@ fifo_push(void) 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 @@ -129,7 +198,7 @@ fifo_push(void) 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) _nc_fifo_dump(); @@ -137,78 +206,123 @@ fifo_push(void) 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; + 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)); + TR(TRACE_IEVENT, ("delay is %d milliseconds", delay)); - if (head == -1) /* fifo is empty */ - if (!_nc_timed_wait(3, delay, (int *) 0)) + rc = check_mouse_activity(delay EVENTLIST_2nd(evl)); + +#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 */ } @@ -225,26 +339,45 @@ wgetch(WINDOW *win) * 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(); } @@ -254,13 +387,11 @@ wgetch(WINDOW *win) _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); } @@ -299,13 +430,48 @@ wgetch(WINDOW *win) * 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); } /* @@ -318,50 +484,61 @@ wgetch(WINDOW *win) ** 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")); @@ -375,8 +552,19 @@ kgetch(WINDOW *win GCC_UNUSED) 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; }