/****************************************************************************
- * Copyright (c) 1998-2006,2007 Free Software Foundation, Inc. *
+ * Copyright (c) 1998-2015,2016 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 *
+ * and: Alexander V Lukyanov 1997-1998 *
****************************************************************************/
/******************************************************************************
#include <curses.priv.h>
-MODULE_ID("$Id: hardscroll.c,v 1.40 2007/06/30 21:11:01 tom Exp $")
+MODULE_ID("$Id: hardscroll.c,v 1.53 2016/05/28 23:32:40 tom Exp $")
#if defined(SCROLLDEBUG) || defined(HASHDEBUG)
# undef screen_lines
-# define screen_lines MAXLINES
-NCURSES_EXPORT_VAR(int)
-oldnums[MAXLINES];
-# define OLDNUM(n) oldnums[n]
+# define screen_lines(sp) MAXLINES
+NCURSES_EXPORT_VAR (int)
+ oldnums[MAXLINES];
+# define OLDNUM(sp,n) oldnums[n]
# define _tracef printf
# undef TR
# define TR(n, a) if (_nc_tracing & (n)) { _tracef a ; putchar('\n'); }
-extern NCURSES_EXPORT_VAR(unsigned) _nc_tracing;
+extern NCURSES_EXPORT_VAR(unsigned) _nc_tracing;
#else /* no debug */
/* OLDNUM(n) indicates which line will be shifted to the position n.
if OLDNUM(n) == _NEWINDEX, then the line n in new, not shifted from
somewhere. */
-NCURSES_EXPORT_VAR(int *)
-_nc_oldnums = 0; /* obsolete: keep for ABI compat */
+NCURSES_EXPORT_VAR (int *)
+ _nc_oldnums = 0; /* obsolete: keep for ABI compat */
# if USE_HASHMAP
-# define oldnums SP->_oldnum_list
-# define OLDNUM(n) oldnums[n]
-# else /* !USE_HASHMAP */
-# define OLDNUM(n) newscr->_line[n].oldindex
-# endif /* !USE_HASHMAP */
+# define oldnums(sp) (sp)->_oldnum_list
+# define OLDNUM(sp,n) oldnums(sp)[n]
+# else /* !USE_HASHMAP */
+# define OLDNUM(sp,n) NewScreen(sp)->_line[n].oldindex
+# endif /* !USE_HASHMAP */
-#define OLDNUM_SIZE SP->_oldnum_size
+#define OLDNUM_SIZE(sp) (sp)->_oldnum_size
#endif /* defined(SCROLLDEBUG) || defined(HASHDEBUG) */
NCURSES_EXPORT(void)
-_nc_scroll_optimize(void)
+NCURSES_SP_NAME(_nc_scroll_optimize) (NCURSES_SP_DCL0)
/* scroll optimization to transform curscr to newscr */
{
int i;
int start, end, shift;
- TR(TRACE_ICALLS, (T_CALLED("_nc_scroll_optimize")));
+ TR(TRACE_ICALLS, (T_CALLED("_nc_scroll_optimize(%p)"), (void *) SP_PARM));
#if !defined(SCROLLDEBUG) && !defined(HASHDEBUG)
#if USE_HASHMAP
/* get enough storage */
- if (OLDNUM_SIZE < screen_lines) {
- int *new_oldnums = typeRealloc(int, screen_lines, oldnums);
+ assert(OLDNUM_SIZE(SP_PARM) >= 0);
+ assert(screen_lines(SP_PARM) > 0);
+ if ((oldnums(SP_PARM) == 0)
+ || (OLDNUM_SIZE(SP_PARM) < screen_lines(SP_PARM))) {
+ int need_lines = ((OLDNUM_SIZE(SP_PARM) < screen_lines(SP_PARM))
+ ? screen_lines(SP_PARM)
+ : OLDNUM_SIZE(SP_PARM));
+ int *new_oldnums = typeRealloc(int,
+ (size_t) need_lines,
+ oldnums(SP_PARM));
if (!new_oldnums)
return;
- oldnums = new_oldnums;
- OLDNUM_SIZE = screen_lines;
+ oldnums(SP_PARM) = new_oldnums;
+ OLDNUM_SIZE(SP_PARM) = need_lines;
}
/* calculate the indices */
- _nc_hash_map();
+ NCURSES_SP_NAME(_nc_hash_map) (NCURSES_SP_ARG);
#endif
#endif /* !defined(SCROLLDEBUG) && !defined(HASHDEBUG) */
#ifdef TRACE
- if (_nc_tracing & (TRACE_UPDATE | TRACE_MOVE))
- _nc_linedump();
+ if (USE_TRACEF(TRACE_UPDATE | TRACE_MOVE)) {
+ NCURSES_SP_NAME(_nc_linedump) (NCURSES_SP_ARG);
+ _nc_unlock_global(tracef);
+ }
#endif /* TRACE */
/* pass 1 - from top to bottom scrolling up */
- for (i = 0; i < screen_lines;) {
- while (i < screen_lines && (OLDNUM(i) == _NEWINDEX || OLDNUM(i) <= i))
+ for (i = 0; i < screen_lines(SP_PARM);) {
+ while (i < screen_lines(SP_PARM)
+ && (OLDNUM(SP_PARM, i) == _NEWINDEX || OLDNUM(SP_PARM, i) <= i))
i++;
- if (i >= screen_lines)
+ if (i >= screen_lines(SP_PARM))
break;
- shift = OLDNUM(i) - i; /* shift > 0 */
+ shift = OLDNUM(SP_PARM, i) - i; /* shift > 0 */
start = i;
i++;
- while (i < screen_lines && OLDNUM(i) != _NEWINDEX && OLDNUM(i) - i
- == shift)
+ while (i < screen_lines(SP_PARM)
+ && OLDNUM(SP_PARM, i) != _NEWINDEX
+ && OLDNUM(SP_PARM, i) - i == shift)
i++;
end = i - 1 + shift;
TR(TRACE_UPDATE | TRACE_MOVE, ("scroll [%d, %d] by %d", start, end, shift));
#if !defined(SCROLLDEBUG) && !defined(HASHDEBUG)
- if (_nc_scrolln(shift, start, end, screen_lines - 1) == ERR) {
+ if (NCURSES_SP_NAME(_nc_scrolln) (NCURSES_SP_ARGx
+ shift,
+ start,
+ end,
+ screen_lines(SP_PARM) - 1) == ERR) {
TR(TRACE_UPDATE | TRACE_MOVE, ("unable to scroll"));
continue;
}
}
/* pass 2 - from bottom to top scrolling down */
- for (i = screen_lines - 1; i >= 0;) {
- while (i >= 0 && (OLDNUM(i) == _NEWINDEX || OLDNUM(i) >= i))
+ for (i = screen_lines(SP_PARM) - 1; i >= 0;) {
+ while (i >= 0
+ && (OLDNUM(SP_PARM, i) == _NEWINDEX
+ || OLDNUM(SP_PARM, i) >= i)) {
i--;
+ }
if (i < 0)
break;
- shift = OLDNUM(i) - i; /* shift < 0 */
+ shift = OLDNUM(SP_PARM, i) - i; /* shift < 0 */
end = i;
i--;
- while (i >= 0 && OLDNUM(i) != _NEWINDEX && OLDNUM(i) - i == shift)
+ while (i >= 0
+ && OLDNUM(SP_PARM, i) != _NEWINDEX
+ && OLDNUM(SP_PARM, i) - i == shift) {
i--;
+ }
start = i + 1 - (-shift);
TR(TRACE_UPDATE | TRACE_MOVE, ("scroll [%d, %d] by %d", start, end, shift));
#if !defined(SCROLLDEBUG) && !defined(HASHDEBUG)
- if (_nc_scrolln(shift, start, end, screen_lines - 1) == ERR) {
+ if (NCURSES_SP_NAME(_nc_scrolln) (NCURSES_SP_ARGx
+ shift,
+ start,
+ end,
+ screen_lines(SP_PARM) - 1) == ERR) {
TR(TRACE_UPDATE | TRACE_MOVE, ("unable to scroll"));
continue;
}
TR(TRACE_ICALLS, (T_RETURN("")));
}
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(void)
+_nc_scroll_optimize(void)
+{
+ NCURSES_SP_NAME(_nc_scroll_optimize) (CURRENT_SCREEN);
+}
+#endif
+
#if defined(TRACE) || defined(SCROLLDEBUG) || defined(HASHDEBUG)
NCURSES_EXPORT(void)
-_nc_linedump(void)
+NCURSES_SP_NAME(_nc_linedump) (NCURSES_SP_DCL0)
/* dump the state of the real and virtual oldnum fields */
{
- int n;
char *buf = 0;
- size_t want = (screen_lines + 1) * 4;
+ size_t want = ((size_t) screen_lines(SP_PARM) + 1) * 4;
+ (void) SP_PARM;
+
+ if ((buf = typeMalloc(char, want)) != 0) {
+ int n;
- buf = typeMalloc(char, want);
+ *buf = '\0';
+ for (n = 0; n < screen_lines(SP_PARM); n++)
+ _nc_SPRINTF(buf + strlen(buf),
+ _nc_SLIMIT(want - strlen(buf))
+ " %02d", OLDNUM(SP_PARM, n));
+ TR(TRACE_UPDATE | TRACE_MOVE, ("virt %s", buf));
+ free(buf);
+ }
+}
- (void) strcpy(buf, "virt");
- for (n = 0; n < screen_lines; n++)
- (void) sprintf(buf + strlen(buf), " %02d", OLDNUM(n));
- TR(TRACE_UPDATE | TRACE_MOVE, (buf));
- free(buf);
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(void)
+_nc_linedump(void)
+{
+ NCURSES_SP_NAME(_nc_linedump) (CURRENT_SCREEN);
}
+#endif
+
#endif /* defined(TRACE) || defined(SCROLLDEBUG) */
#ifdef SCROLLDEBUG
for (;;) {
int n;
- for (n = 0; n < screen_lines; n++)
+ for (n = 0; n < screen_lines(sp); n++)
oldnums[n] = _NEWINDEX;
/* grab the test vector */
projects / ncurses.git / blobdiff