]> ncurses.scripts.mit.edu Git - ncurses.git/blobdiff - ncurses/base/lib_getch.c
ncurses 5.7 - patch 20091024
[ncurses.git] / ncurses / base / lib_getch.c
index d9f6b1795c77d83b7579db9a01026b06b40f858f..f6520c068edc2dff613007b05723c373954a13cb 100644 (file)
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2008,2009 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            *
@@ -30,6 +30,7 @@
  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
  *     and: Thomas E. Dickey                        1996-on                 *
+ *     and: Juergen Pfeifer                         2009                    *
  ****************************************************************************/
 
 /*
 
 #include <curses.priv.h>
 
-MODULE_ID("$Id: lib_getch.c,v 1.87 2008/05/03 22:42:10 tom Exp $")
+MODULE_ID("$Id: lib_getch.c,v 1.109 2009/10/24 21:58:34 tom Exp $")
 
 #include <fifo_defs.h>
 
 #if USE_REENTRANT
-#define GetEscdelay(sp) (sp)->_ESCDELAY
+#define GetEscdelay(sp) *_nc_ptr_Escdelay(sp)
 NCURSES_EXPORT(int)
 NCURSES_PUBLIC_VAR(ESCDELAY) (void)
 {
-    return SP ? GetEscdelay(SP) : 1000;
+    return *(_nc_ptr_Escdelay(CURRENT_SCREEN));
+}
+
+NCURSES_EXPORT(int *)
+_nc_ptr_Escdelay(SCREEN *sp)
+{
+    return ptrEscdelay(sp);
 }
 #else
 #define GetEscdelay(sp) ESCDELAY
-NCURSES_EXPORT_VAR(int)
-ESCDELAY = 1000;               /* max interval betw. chars in funkeys, in millisecs */
+NCURSES_EXPORT_VAR(int) ESCDELAY = 1000;
 #endif
 
 #if NCURSES_EXT_FUNCS
 NCURSES_EXPORT(int)
-set_escdelay(int value)
+NCURSES_SP_NAME(set_escdelay) (NCURSES_SP_DCLx int value)
 {
     int code = OK;
 #if USE_REENTRANT
-    if (SP) {
-       SP->_ESCDELAY = value;
+    if (SP_PARM) {
+       SET_ESCDELAY(value);
     } else {
        code = ERR;
     }
+#else
+    (void) SP_PARM;
+    ESCDELAY = value;
+#endif
+    return code;
+}
+
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(int)
+set_escdelay(int value)
+{
+    int code;
+#if USE_REENTRANT
+    code = NCURSES_SP_NAME(set_escdelay) (CURRENT_SCREEN, value);
 #else
     ESCDELAY = value;
+    code = OK;
 #endif
     return code;
 }
 #endif
+#endif /* NCURSES_EXT_FUNCS */
+
+#if NCURSES_EXT_FUNCS
+NCURSES_EXPORT(int)
+NCURSES_SP_NAME(get_escdelay) (NCURSES_SP_DCL0)
+{
+#if !USE_REENTRANT
+    (void) SP_PARM;
+#endif
+    return GetEscdelay(SP_PARM);
+}
+
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(int)
+get_escdelay(void)
+{
+    return NCURSES_SP_NAME(get_escdelay) (CURRENT_SCREEN);
+}
+#endif
+#endif /* NCURSES_EXT_FUNCS */
+
+static int
+_nc_use_meta(WINDOW *win)
+{
+    SCREEN *sp = _nc_screen_of(win);
+    return (sp ? sp->_use_meta : 0);
+}
 
 #ifdef NCURSES_WGETCH_EVENTS
-#define TWAIT_MASK 7
+#define TWAIT_MASK (TW_ANY | TW_EVENT)
 #else
-#define TWAIT_MASK 3
+#define TWAIT_MASK TW_ANY
 #endif
 
 /*
@@ -93,16 +141,28 @@ check_mouse_activity(SCREEN *sp, int delay EVENTLIST_2nd(_nc_eventlist * evl))
 #if USE_SYSMOUSE
     if ((sp->_mouse_type == M_SYSMOUSE)
        && (sp->_sysmouse_head < sp->_sysmouse_tail)) {
-       return 2;
+       return TW_MOUSE;
     }
 #endif
-    rc = _nc_timed_wait(sp, TWAIT_MASK, delay, (int *) 0 EVENTLIST_2nd(evl));
+#ifdef USE_TERM_DRIVER
+    rc = TCBOf(sp)->drv->twait(TCBOf(sp),
+                              TWAIT_MASK,
+                              delay,
+                              (int *) 0
+                              EVENTLIST_2nd(evl));
+#else
+    rc = _nc_timed_wait(sp,
+                       TWAIT_MASK,
+                       delay,
+                       (int *) 0
+                       EVENTLIST_2nd(evl));
+#endif
 #if USE_SYSMOUSE
     if ((sp->_mouse_type == M_SYSMOUSE)
        && (sp->_sysmouse_head < sp->_sysmouse_tail)
        && (rc == 0)
        && (errno == EINTR)) {
-       rc |= 2;
+       rc |= TW_MOUSE;
     }
 #endif
     return rc;
@@ -123,7 +183,7 @@ fifo_pull(SCREEN *sp)
 {
     int ch;
     ch = sp->_fifo[head];
-    TR(TRACE_IEVENT, ("pulling %s from %d", _tracechar(ch), head));
+    TR(TRACE_IEVENT, ("pulling %s from %d", _nc_tracechar(sp, ch), head));
 
     if (peek == head) {
        h_inc();
@@ -166,9 +226,9 @@ fifo_push(SCREEN *sp EVENTLIST_2nd(_nc_eventlist * evl))
     } else
        mask = 0;
 
-    if (mask & 4) {
+    if (mask & TW_EVENT) {
        T(("fifo_push: ungetch KEY_EVENT"));
-       _nc_ungetch(sp, KEY_EVENT);
+       safe_ungetch(sp, KEY_EVENT);
        return KEY_EVENT;
     }
 #elif USE_GPM_SUPPORT || USE_EMX_MOUSE || USE_SYSMOUSE
@@ -178,7 +238,7 @@ fifo_push(SCREEN *sp EVENTLIST_2nd(_nc_eventlist * evl))
 #endif
 
 #if USE_GPM_SUPPORT || USE_EMX_MOUSE
-    if ((sp->_mouse_fd >= 0) && (mask & 2)) {
+    if ((sp->_mouse_fd >= 0) && (mask & TW_MOUSE)) {
        sp->_mouse_event(sp);
        ch = KEY_MOUSE;
        n = 1;
@@ -198,9 +258,15 @@ fifo_push(SCREEN *sp EVENTLIST_2nd(_nc_eventlist * evl))
     } else
 #endif
     {                          /* Can block... */
+#ifdef USE_TERM_DRIVER
+       int buf;
+       n = CallDriver_1(sp, read, &buf);
+       ch = buf;
+#else
        unsigned char c2 = 0;
        n = read(sp->_ifd, &c2, 1);
        ch = c2;
+#endif
     }
 
 #ifdef HIDE_EINTR
@@ -228,7 +294,7 @@ fifo_push(SCREEN *sp EVENTLIST_2nd(_nc_eventlist * evl))
     if (head == -1)
        head = peek = tail;
     t_inc();
-    TR(TRACE_IEVENT, ("pushed %s at %d", _tracechar(ch), tail));
+    TR(TRACE_IEVENT, ("pushed %s at %d", _nc_tracechar(sp, ch), tail));
 #ifdef TRACE
     if (USE_TRACEF(TRACE_IEVENT)) {
        _nc_fifo_dump(sp);
@@ -248,9 +314,59 @@ fifo_clear(SCREEN *sp)
 
 static int kgetch(SCREEN *EVENTLIST_2nd(_nc_eventlist * evl));
 
-#define wgetch_should_refresh(win) (\
-       (is_wintouched(win) || (win->_flags & _HASMOVED)) \
-       && !(win->_flags & _ISPAD))
+static void
+recur_wrefresh(WINDOW *win)
+{
+#ifdef USE_PTHREADS
+    SCREEN *sp = _nc_screen_of(win);
+    if (_nc_use_pthreads && sp != CURRENT_SCREEN) {
+       SCREEN *save_SP;
+
+       /* temporarily switch to the window's screen to check/refresh */
+       _nc_lock_global(curses);
+       save_SP = CURRENT_SCREEN;
+       _nc_set_screen(sp);
+       recur_wrefresh(win);
+       _nc_set_screen(save_SP);
+       _nc_unlock_global(curses);
+    } else
+#endif
+       if ((is_wintouched(win) || (win->_flags & _HASMOVED))
+           && !(win->_flags & _ISPAD)) {
+       wrefresh(win);
+    }
+}
+
+static int
+recur_wgetnstr(WINDOW *win, char *buf)
+{
+    SCREEN *sp = _nc_screen_of(win);
+    int rc;
+
+    if (sp != 0) {
+#ifdef USE_PTHREADS
+       if (_nc_use_pthreads && sp != CURRENT_SCREEN) {
+           SCREEN *save_SP;
+
+           /* temporarily switch to the window's screen to get cooked input */
+           _nc_lock_global(curses);
+           save_SP = CURRENT_SCREEN;
+           _nc_set_screen(sp);
+           rc = recur_wgetnstr(win, buf);
+           _nc_set_screen(save_SP);
+           _nc_unlock_global(curses);
+       } else
+#endif
+       {
+           sp->_called_wgetch = TRUE;
+           rc = wgetnstr(win, buf, MAXCOLUMNS);
+           sp->_called_wgetch = FALSE;
+       }
+    } else {
+       rc = ERR;
+    }
+    return rc;
+}
 
 NCURSES_EXPORT(int)
 _nc_wgetch(WINDOW *win,
@@ -258,23 +374,23 @@ _nc_wgetch(WINDOW *win,
           int use_meta
           EVENTLIST_2nd(_nc_eventlist * evl))
 {
-    SCREEN *sp = SP;
+    SCREEN *sp;
     int ch;
 #ifdef NCURSES_WGETCH_EVENTS
     long event_delay = -1;
 #endif
 
-    T((T_CALLED("_nc_wgetch(%p)"), win));
+    T((T_CALLED("_nc_wgetch(%p)"), (void *) win));
 
     *result = 0;
+
+    sp = _nc_screen_of(win);
     if (win == 0 || sp == 0) {
        returnCode(ERR);
     }
 
     if (cooked_key_in_fifo()) {
-       if (wgetch_should_refresh(win))
-           wrefresh(win);
-
+       recur_wrefresh(win);
        *result = fifo_pull(sp);
        returnCode(*result >= KEY_MIN ? KEY_CODE_YES : OK);
     }
@@ -299,17 +415,15 @@ _nc_wgetch(WINDOW *win,
 
        TR(TRACE_IEVENT, ("filling queue in cooked mode"));
 
-       sp->_called_wgetch = TRUE;
-       rc = wgetnstr(win, buf, MAXCOLUMNS);
-       sp->_called_wgetch = FALSE;
+       rc = recur_wgetnstr(win, buf);
 
        /* ungetch in reverse order */
 #ifdef NCURSES_WGETCH_EVENTS
        if (rc != KEY_EVENT)
 #endif
-           _nc_ungetch(sp, '\n');
+           safe_ungetch(sp, '\n');
        for (bufp = buf + strlen(buf); bufp > buf; bufp--)
-           _nc_ungetch(sp, bufp[-1]);
+           safe_ungetch(sp, bufp[-1]);
 
 #ifdef NCURSES_WGETCH_EVENTS
        /* Return it first */
@@ -324,10 +438,9 @@ _nc_wgetch(WINDOW *win,
     if (win->_use_keypad != sp->_keypad_on)
        _nc_keypad(sp, win->_use_keypad);
 
-    if (wgetch_should_refresh(win))
-       wrefresh(win);
+    recur_wrefresh(win);
 
-    if (!win->_notimeout && (win->_delay >= 0 || sp->_cbreak > 1)) {
+    if (win->_notimeout || (win->_delay >= 0) || (sp->_cbreak > 1)) {
        if (head == -1) {       /* fifo is empty */
            int delay;
            int rc;
@@ -348,13 +461,14 @@ _nc_wgetch(WINDOW *win,
            rc = check_mouse_activity(sp, delay EVENTLIST_2nd(evl));
 
 #ifdef NCURSES_WGETCH_EVENTS
-           if (rc & 4) {
+           if (rc & TW_EVENT) {
                *result = KEY_EVENT;
                returnCode(KEY_CODE_YES);
            }
 #endif
-           if (!rc)
-               returnCode(ERR);
+           if (!rc) {
+               goto check_sigwinch;
+           }
        }
        /* else go on to read data available */
     }
@@ -372,7 +486,7 @@ _nc_wgetch(WINDOW *win,
         * increase the wait with mouseinterval().
         */
        int runcount = 0;
-       int rc;
+       int rc = 0;
 
        do {
            ch = kgetch(sp EVENTLIST_2nd(evl));
@@ -387,11 +501,11 @@ _nc_wgetch(WINDOW *win,
            (ch == KEY_MOUSE
             && (((rc = check_mouse_activity(sp, sp->_maxclick
                                             EVENTLIST_2nd(evl))) != 0
-                 && !(rc & 4))
-                || !sp->_mouse_parse(runcount)));
+                 && !(rc & TW_EVENT))
+                || !sp->_mouse_parse(sp, runcount)));
 #ifdef NCURSES_WGETCH_EVENTS
-       if ((rc & 4) && !ch == KEY_EVENT) {
-           _nc_ungetch(sp, ch);
+       if ((rc & TW_EVENT) && !(ch == KEY_EVENT)) {
+           safe_ungetch(sp, ch);
            ch = KEY_EVENT;
        }
 #endif
@@ -399,12 +513,12 @@ _nc_wgetch(WINDOW *win,
 #ifdef NCURSES_WGETCH_EVENTS
            /* mouse event sequence ended by an event, report event */
            if (ch == KEY_EVENT) {
-               _nc_ungetch(sp, KEY_MOUSE);     /* FIXME This interrupts a gesture... */
+               safe_ungetch(sp, KEY_MOUSE);    /* FIXME This interrupts a gesture... */
            } else
 #endif
            {
                /* mouse event sequence ended by keystroke, store keystroke */
-               _nc_ungetch(sp, ch);
+               safe_ungetch(sp, ch);
                ch = KEY_MOUSE;
            }
        }
@@ -415,12 +529,19 @@ _nc_wgetch(WINDOW *win,
     }
 
     if (ch == ERR) {
+      check_sigwinch:
 #if USE_SIZECHANGE
        if (_nc_handle_sigwinch(sp)) {
            _nc_update_screensize(sp);
            /* resizeterm can push KEY_RESIZE */
            if (cooked_key_in_fifo()) {
                *result = fifo_pull(sp);
+               /*
+                * Get the ERR from queue -- it is from WINCH,
+                * so we should take it out, the "error" is handled.
+                */
+               if (fifo_peek(sp) == -1)
+                   fifo_pull(sp);
                returnCode(*result >= KEY_MIN ? KEY_CODE_YES : OK);
            }
        }
@@ -467,7 +588,7 @@ _nc_wgetch(WINDOW *win,
        if ((ch < KEY_MIN) && (ch & 0x80))
            ch &= 0x7f;
 
-    T(("wgetch returning : %s", _tracechar(ch)));
+    T(("wgetch returning : %s", _nc_tracechar(sp, ch)));
 
     *result = ch;
     returnCode(ch >= KEY_MIN ? KEY_CODE_YES : OK);
@@ -477,14 +598,13 @@ _nc_wgetch(WINDOW *win,
 NCURSES_EXPORT(int)
 wgetch_events(WINDOW *win, _nc_eventlist * evl)
 {
-    SCREEN *sp = SP;
     int code;
     unsigned long value;
 
     T((T_CALLED("wgetch_events(%p,%p)"), win, evl));
     code = _nc_wgetch(win,
                      &value,
-                     sp->_use_meta
+                     _nc_use_meta(win)
                      EVENTLIST_2nd(evl));
     if (code != ERR)
        code = value;
@@ -495,14 +615,13 @@ wgetch_events(WINDOW *win, _nc_eventlist * evl)
 NCURSES_EXPORT(int)
 wgetch(WINDOW *win)
 {
-    SCREEN *sp = SP;
     int code;
     unsigned long value;
 
-    T((T_CALLED("wgetch(%p)"), win));
+    T((T_CALLED("wgetch(%p)"), (void *) win));
     code = _nc_wgetch(win,
                      &value,
-                     (sp ? sp->_use_meta : 0)
+                     _nc_use_meta(win)
                      EVENTLIST_2nd((_nc_eventlist *) 0));
     if (code != ERR)
        code = value;
@@ -564,7 +683,7 @@ kgetch(SCREEN *sp EVENTLIST_2nd(_nc_eventlist * evl))
            return ch;
        }
 
-       TR(TRACE_IEVENT, ("ch: %s", _tracechar((unsigned char) ch)));
+       TR(TRACE_IEVENT, ("ch: %s", _nc_tracechar(sp, (unsigned char) ch)));
        while ((ptr != NULL) && (ptr->ch != (unsigned char) ch))
            ptr = ptr->sibling;
 
@@ -573,7 +692,7 @@ kgetch(SCREEN *sp EVENTLIST_2nd(_nc_eventlist * evl))
            break;
        }
        TR(TRACE_IEVENT, ("ptr=%p, ch=%d, value=%d",
-                         ptr, ptr->ch, ptr->value));
+                         (void *) ptr, ptr->ch, ptr->value));
 
        if (ptr->value != 0) {  /* sequence terminated */
            TR(TRACE_IEVENT, ("end of sequence"));
@@ -592,7 +711,7 @@ kgetch(SCREEN *sp EVENTLIST_2nd(_nc_eventlist * evl))
            TR(TRACE_IEVENT, ("waiting for rest of sequence"));
            rc = check_mouse_activity(sp, timeleft EVENTLIST_2nd(evl));
 #ifdef NCURSES_WGETCH_EVENTS
-           if (rc & 4) {
+           if (rc & TW_EVENT) {
                TR(TRACE_IEVENT, ("interrupted by a user event"));
                /* FIXME Should have preserved remainder timeleft for reuse... */
                peek = head;    /* Restart interpreting later */