diff options
Diffstat (limited to 'ncurses-5.9/ncurses/tty/tty_update.c')
| -rw-r--r-- | ncurses-5.9/ncurses/tty/tty_update.c | 2228 |
1 files changed, 2228 insertions, 0 deletions
diff --git a/ncurses-5.9/ncurses/tty/tty_update.c b/ncurses-5.9/ncurses/tty/tty_update.c new file mode 100644 index 0000000..a27536b --- /dev/null +++ b/ncurses-5.9/ncurses/tty/tty_update.c @@ -0,0 +1,2228 @@ +/**************************************************************************** + * Copyright (c) 1998-2009,2010 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 * + * "Software"), to deal in the Software without restriction, including * + * without limitation the rights to use, copy, modify, merge, publish, * + * distribute, distribute with modifications, sublicense, and/or sell * + * copies of the Software, and to permit persons to whom the Software is * + * furnished to do so, subject to the following conditions: * + * * + * The above copyright notice and this permission notice shall be included * + * in all copies or substantial portions of the Software. * + * * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * + * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * + * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * + * * + * Except as contained in this notice, the name(s) of the above copyright * + * holders shall not be used in advertising or otherwise to promote the * + * sale, use or other dealings in this Software without prior written * + * authorization. * + ****************************************************************************/ + +/**************************************************************************** + * 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 * + ****************************************************************************/ + +/*----------------------------------------------------------------- + * + * lib_doupdate.c + * + * The routine doupdate() and its dependents. + * All physical output is concentrated here (except _nc_outch() + * in lib_tputs.c). + * + *-----------------------------------------------------------------*/ + +#include <curses.priv.h> + +#ifndef CUR +#define CUR SP_TERMTYPE +#endif + +#if defined __HAIKU__ && defined __BEOS__ +#undef __BEOS__ +#endif + +#ifdef __BEOS__ +#undef false +#undef true +#include <OS.h> +#endif + +#if defined(TRACE) && HAVE_SYS_TIMES_H && HAVE_TIMES +#define USE_TRACE_TIMES 1 +#else +#define USE_TRACE_TIMES 0 +#endif + +#if HAVE_SYS_TIME_H && HAVE_SYS_TIME_SELECT +#include <sys/time.h> +#endif + +#if USE_TRACE_TIMES +#include <sys/times.h> +#endif + +#if USE_FUNC_POLL +#elif HAVE_SELECT +#if HAVE_SYS_SELECT_H +#include <sys/select.h> +#endif +#endif + +#include <ctype.h> + +MODULE_ID("$Id$") + +/* + * This define controls the line-breakout optimization. Every once in a + * while during screen refresh, we want to check for input and abort the + * update if there's some waiting. CHECK_INTERVAL controls the number of + * changed lines to be emitted between input checks. + * + * Note: Input-check-and-abort is no longer done if the screen is being + * updated from scratch. This is a feature, not a bug. + */ +#define CHECK_INTERVAL 5 + +#define FILL_BCE(sp) (sp->_coloron && !sp->_default_color && !back_color_erase) + +static const NCURSES_CH_T blankchar = NewChar(BLANK_TEXT); +static NCURSES_CH_T normal = NewChar(BLANK_TEXT); + +/* + * Enable checking to see if doupdate and friends are tracking the true + * cursor position correctly. NOTE: this is a debugging hack which will + * work ONLY on ANSI-compatible terminals! + */ +/* #define POSITION_DEBUG */ + +static NCURSES_INLINE NCURSES_CH_T ClrBlank(NCURSES_SP_DCLx WINDOW *win); + +#if NCURSES_SP_FUNCS +static int ClrBottom(SCREEN *, int total); +static void ClearScreen(SCREEN *, NCURSES_CH_T blank); +static void ClrUpdate(SCREEN *); +static void DelChar(SCREEN *, int count); +static void InsStr(SCREEN *, NCURSES_CH_T * line, int count); +static void TransformLine(SCREEN *, int const lineno); +#else +static int ClrBottom(int total); +static void ClearScreen(NCURSES_CH_T blank); +static void ClrUpdate(void); +static void DelChar(int count); +static void InsStr(NCURSES_CH_T * line, int count); +static void TransformLine(int const lineno); +#endif + +#ifdef POSITION_DEBUG +/**************************************************************************** + * + * Debugging code. Only works on ANSI-standard terminals. + * + ****************************************************************************/ + +static void +position_check(NCURSES_SP_DCLx int expected_y, int expected_x, char *legend) +/* check to see if the real cursor position matches the virtual */ +{ + char buf[20]; + char *s; + int y, x; + + if (!_nc_tracing || (expected_y < 0 && expected_x < 0)) + return; + + NCURSES_SP_NAME(_nc_flush) (NCURSES_SP_ARG); + memset(buf, '\0', sizeof(buf)); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx "\033[6n"); /* only works on ANSI-compatibles */ + NCURSES_SP_NAME(_nc_flush) (NCURSES_SP_ARG); + *(s = buf) = 0; + do { + int ask = sizeof(buf) - 1 - (s - buf); + int got = read(0, s, ask); + if (got == 0) + break; + s += got; + } while (strchr(buf, 'R') == 0); + _tracef("probe returned %s", _nc_visbuf(buf)); + + /* try to interpret as a position report */ + if (sscanf(buf, "\033[%d;%dR", &y, &x) != 2) { + _tracef("position probe failed in %s", legend); + } else { + if (expected_x < 0) + expected_x = x - 1; + if (expected_y < 0) + expected_y = y - 1; + if (y - 1 != expected_y || x - 1 != expected_x) { + NCURSES_SP_NAME(beep) (NCURSES_SP_ARG); + NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx + tparm("\033[%d;%dH", + expected_y + 1, + expected_x + 1), + 1, NCURSES_SP_NAME(_nc_outch)); + _tracef("position seen (%d, %d) doesn't match expected one (%d, %d) in %s", + y - 1, x - 1, expected_y, expected_x, legend); + } else { + _tracef("position matches OK in %s", legend); + } + } +} +#else +#define position_check(sp, expected_y, expected_x, legend) /* nothing */ +#endif /* POSITION_DEBUG */ + +/**************************************************************************** + * + * Optimized update code + * + ****************************************************************************/ + +static NCURSES_INLINE void +GoTo(NCURSES_SP_DCLx int const row, int const col) +{ + TR(TRACE_MOVE, ("GoTo(%p, %d, %d) from (%d, %d)", + (void *) SP_PARM, row, col, SP_PARM->_cursrow, SP_PARM->_curscol)); + + position_check(SP_PARM, SP_PARM->_cursrow, SP_PARM->_curscol, "GoTo"); + + TINFO_MVCUR(NCURSES_SP_ARGx + SP_PARM->_cursrow, + SP_PARM->_curscol, + row, col); + position_check(SP_PARM, SP_PARM->_cursrow, SP_PARM->_curscol, "GoTo2"); +} + +static NCURSES_INLINE void +PutAttrChar(NCURSES_SP_DCLx CARG_CH_T ch) +{ + int chlen = 1; + NCURSES_CH_T my_ch; + PUTC_DATA; + NCURSES_CH_T tilde; + NCURSES_CH_T attr = CHDEREF(ch); + + TR(TRACE_CHARPUT, ("PutAttrChar(%s) at (%d, %d)", + _tracech_t(ch), + SP_PARM->_cursrow, SP_PARM->_curscol)); +#if USE_WIDEC_SUPPORT + /* + * If this is not a valid character, there is nothing more to do. + */ + if (isWidecExt(CHDEREF(ch))) { + TR(TRACE_CHARPUT, ("...skip")); + return; + } + /* + * Determine the number of character cells which the 'ch' value will use + * on the screen. It should be at least one. + */ + if ((chlen = wcwidth(CharOf(CHDEREF(ch)))) <= 0) { + static const NCURSES_CH_T blank = NewChar(BLANK_TEXT); + + /* + * If the character falls into any of these special cases, do + * not force the result to a blank: + * + * a) it is printable (this works around a bug in wcwidth()). + * b) use_legacy_coding() has been called to modify the treatment + * of codes 128-255. + * c) the acs_map[] has been initialized to allow codes 0-31 + * to be rendered. This supports Linux console's "PC" + * characters. Codes 128-255 are allowed though this is + * not checked. + */ + if (is8bits(CharOf(CHDEREF(ch))) + && (isprint(CharOf(CHDEREF(ch))) + || (SP_PARM->_legacy_coding > 0 && CharOf(CHDEREF(ch)) >= 160) + || (SP_PARM->_legacy_coding > 1 && CharOf(CHDEREF(ch)) >= 128) + || (AttrOf(attr) & A_ALTCHARSET + && ((CharOfD(ch) < ACS_LEN + && SP_PARM->_acs_map != 0 + && SP_PARM->_acs_map[CharOfD(ch)] != 0) + || (CharOfD(ch) >= 128))))) { + ; + } else { + ch = CHREF(blank); + TR(TRACE_CHARPUT, ("forced to blank")); + } + chlen = 1; + } +#endif + + if ((AttrOf(attr) & A_ALTCHARSET) + && SP_PARM->_acs_map != 0 + && CharOfD(ch) < ACS_LEN) { + my_ch = CHDEREF(ch); /* work around const param */ +#if USE_WIDEC_SUPPORT + /* + * This is crude & ugly, but works most of the time. It checks if the + * acs_chars string specified that we have a mapping for this + * character, and uses the wide-character mapping when we expect the + * normal one to be broken (by mis-design ;-). + */ + if (SP_PARM->_screen_acs_fix + && SP_PARM->_screen_acs_map[CharOf(my_ch)]) { + RemAttr(attr, A_ALTCHARSET); + my_ch = _nc_wacs[CharOf(my_ch)]; + } +#endif + /* + * If we (still) have alternate character set, it is the normal 8bit + * flavor. The _screen_acs_map[] array tells if the character was + * really in acs_chars, needed because of the way wide/normal line + * drawing flavors are integrated. + */ + if (AttrOf(attr) & A_ALTCHARSET) { + int j = CharOfD(ch); + chtype temp = UChar(SP_PARM->_acs_map[j]); + + if (!(SP_PARM->_screen_acs_map[j])) { + RemAttr(attr, A_ALTCHARSET); + if (temp == 0) + temp = ' '; + } + if (temp != 0) + SetChar(my_ch, temp, AttrOf(attr)); + } + ch = CHREF(my_ch); + } + if (tilde_glitch && (CharOfD(ch) == L('~'))) { + SetChar(tilde, L('`'), AttrOf(attr)); + ch = CHREF(tilde); + } + + UpdateAttrs(SP_PARM, attr); +#if !USE_WIDEC_SUPPORT + /* FIXME - we do this special case for signal handling, should see how to + * make it work for wide characters. + */ + if (SP_PARM->_outch != 0) { + SP_PARM->_outch(NCURSES_SP_ARGx UChar(ch)); + } else +#endif + { + PUTC(CHDEREF(ch), SP_PARM->_ofp); /* macro's fastest... */ + COUNT_OUTCHARS(1); + } + SP_PARM->_curscol += chlen; + if (char_padding) { + TPUTS_TRACE("char_padding"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx char_padding); + } +} + +static bool +check_pending(NCURSES_SP_DCL0) +/* check for pending input */ +{ + bool have_pending = FALSE; + + /* + * Only carry out this check when the flag is zero, otherwise we'll + * have the refreshing slow down drastically (or stop) if there's an + * unread character available. + */ + if (SP_PARM->_fifohold != 0) + return FALSE; + + if (SP_PARM->_checkfd >= 0) { +#if USE_FUNC_POLL + struct pollfd fds[1]; + fds[0].fd = SP_PARM->_checkfd; + fds[0].events = POLLIN; + if (poll(fds, 1, 0) > 0) { + have_pending = TRUE; + } +#elif defined(__BEOS__) + /* + * BeOS's select() is declared in socket.h, so the configure script does + * not see it. That's just as well, since that function works only for + * sockets. This (using snooze and ioctl) was distilled from Be's patch + * for ncurses which uses a separate thread to simulate select(). + * + * FIXME: the return values from the ioctl aren't very clear if we get + * interrupted. + */ + int n = 0; + int howmany = ioctl(0, 'ichr', &n); + if (howmany >= 0 && n > 0) { + have_pending = TRUE; + } +#elif HAVE_SELECT + fd_set fdset; + struct timeval ktimeout; + + ktimeout.tv_sec = + ktimeout.tv_usec = 0; + + FD_ZERO(&fdset); + FD_SET(SP_PARM->_checkfd, &fdset); + if (select(SP_PARM->_checkfd + 1, &fdset, NULL, NULL, &ktimeout) != 0) { + have_pending = TRUE; + } +#endif + } + if (have_pending) { + SP_PARM->_fifohold = 5; + NCURSES_SP_NAME(_nc_flush) (NCURSES_SP_ARG); + } + return FALSE; +} + +/* put char at lower right corner */ +static void +PutCharLR(NCURSES_SP_DCLx const ARG_CH_T ch) +{ + if (!auto_right_margin) { + /* we can put the char directly */ + PutAttrChar(NCURSES_SP_ARGx ch); + } else if (enter_am_mode && exit_am_mode) { + /* we can suppress automargin */ + TPUTS_TRACE("exit_am_mode"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx exit_am_mode); + + PutAttrChar(NCURSES_SP_ARGx ch); + SP_PARM->_curscol--; + position_check(SP_PARM, + SP_PARM->_cursrow, + SP_PARM->_curscol, + "exit_am_mode"); + + TPUTS_TRACE("enter_am_mode"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx enter_am_mode); + } else if ((enter_insert_mode && exit_insert_mode) + || insert_character || parm_ich) { + GoTo(NCURSES_SP_ARGx + screen_lines(SP_PARM) - 1, + screen_columns(SP_PARM) - 2); + PutAttrChar(NCURSES_SP_ARGx ch); + GoTo(NCURSES_SP_ARGx + screen_lines(SP_PARM) - 1, + screen_columns(SP_PARM) - 2); + InsStr(NCURSES_SP_ARGx + NewScreen(SP_PARM)->_line[screen_lines(SP_PARM) - 1].text + + screen_columns(SP_PARM) - 2, 1); + } +} + +/* + * Wrap the cursor position, i.e., advance to the beginning of the next line. + */ +static void +wrap_cursor(NCURSES_SP_DCL0) +{ + if (eat_newline_glitch) { + /* + * xenl can manifest two different ways. The vt100 way is that, when + * you'd expect the cursor to wrap, it stays hung at the right margin + * (on top of the character just emitted) and doesn't wrap until the + * *next* graphic char is emitted. The c100 way is to ignore LF + * received just after an am wrap. + * + * An aggressive way to handle this would be to emit CR/LF after the + * char and then assume the wrap is done, you're on the first position + * of the next line, and the terminal out of its weird state. Here + * it's safe to just tell the code that the cursor is in hyperspace and + * let the next mvcur() call straighten things out. + */ + SP_PARM->_curscol = -1; + SP_PARM->_cursrow = -1; + } else if (auto_right_margin) { + SP_PARM->_curscol = 0; + SP_PARM->_cursrow++; + /* + * We've actually moved - but may have to work around problems with + * video attributes not working. + */ + if (!move_standout_mode && AttrOf(SCREEN_ATTRS(SP_PARM))) { + TR(TRACE_CHARPUT, ("turning off (%#lx) %s before wrapping", + (unsigned long) AttrOf(SCREEN_ATTRS(SP_PARM)), + _traceattr(AttrOf(SCREEN_ATTRS(SP_PARM))))); + (void) VIDATTR(SP_PARM, A_NORMAL, 0); + } + } else { + SP_PARM->_curscol--; + } + position_check(SP_PARM, + SP_PARM->_cursrow, + SP_PARM->_curscol, + "wrap_cursor"); +} + +static NCURSES_INLINE void +PutChar(NCURSES_SP_DCLx const ARG_CH_T ch) +/* insert character, handling automargin stuff */ +{ + if (SP_PARM->_cursrow == screen_lines(SP_PARM) - 1 && + SP_PARM->_curscol == screen_columns(SP_PARM) - 1) { + PutCharLR(NCURSES_SP_ARGx ch); + } else { + PutAttrChar(NCURSES_SP_ARGx ch); + } + + if (SP_PARM->_curscol >= screen_columns(SP_PARM)) + wrap_cursor(NCURSES_SP_ARG); + + position_check(SP_PARM, SP_PARM->_cursrow, SP_PARM->_curscol, "PutChar"); +} + +/* + * Check whether the given character can be output by clearing commands. This + * includes test for being a space and not including any 'bad' attributes, such + * as A_REVERSE. All attribute flags which don't affect appearance of a space + * or can be output by clearing (A_COLOR in case of bce-terminal) are excluded. + */ +static NCURSES_INLINE bool +can_clear_with(NCURSES_SP_DCLx ARG_CH_T ch) +{ + if (!back_color_erase && SP_PARM->_coloron) { +#if NCURSES_EXT_FUNCS + int pair; + + if (!SP_PARM->_default_color) + return FALSE; + if (SP_PARM->_default_fg != C_MASK || SP_PARM->_default_bg != C_MASK) + return FALSE; + if ((pair = GetPair(CHDEREF(ch))) != 0) { + short fg, bg; + NCURSES_SP_NAME(pair_content) (NCURSES_SP_ARGx + (short) pair, + &fg, &bg); + if (fg != C_MASK || bg != C_MASK) + return FALSE; + } +#else + if (AttrOfD(ch) & A_COLOR) + return FALSE; +#endif + } + return (ISBLANK(CHDEREF(ch)) && + (AttrOfD(ch) & ~(NONBLANK_ATTR | A_COLOR)) == BLANK_ATTR); +} + +/* + * Issue a given span of characters from an array. + * Must be functionally equivalent to: + * for (i = 0; i < num; i++) + * PutChar(ntext[i]); + * but can leave the cursor positioned at the middle of the interval. + * + * Returns: 0 - cursor is at the end of interval + * 1 - cursor is somewhere in the middle + * + * This code is optimized using ech and rep. + */ +static int +EmitRange(NCURSES_SP_DCLx const NCURSES_CH_T * ntext, int num) +{ + int i; + + TR(TRACE_CHARPUT, ("EmitRange %d:%s", num, _nc_viscbuf(ntext, num))); + + if (erase_chars || repeat_char) { + while (num > 0) { + int runcount; + NCURSES_CH_T ntext0; + + while (num > 1 && !CharEq(ntext[0], ntext[1])) { + PutChar(NCURSES_SP_ARGx CHREF(ntext[0])); + ntext++; + num--; + } + ntext0 = ntext[0]; + if (num == 1) { + PutChar(NCURSES_SP_ARGx CHREF(ntext0)); + return 0; + } + runcount = 2; + + while (runcount < num && CharEq(ntext[runcount], ntext0)) + runcount++; + + /* + * The cost expression in the middle isn't exactly right. + * _cup_ch_cost is an upper bound on the cost for moving to the + * end of the erased area, but not the cost itself (which we + * can't compute without emitting the move). This may result + * in erase_chars not getting used in some situations for + * which it would be marginally advantageous. + */ + if (erase_chars + && runcount > SP_PARM->_ech_cost + SP_PARM->_cup_ch_cost + && can_clear_with(NCURSES_SP_ARGx CHREF(ntext0))) { + UpdateAttrs(SP_PARM, ntext0); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx + TPARM_1(erase_chars, runcount)); + + /* + * If this is the last part of the given interval, + * don't bother moving cursor, since it can be the + * last update on the line. + */ + if (runcount < num) { + GoTo(NCURSES_SP_ARGx + SP_PARM->_cursrow, + SP_PARM->_curscol + runcount); + } else { + return 1; /* cursor stays in the middle */ + } + } else if (repeat_char && runcount > SP_PARM->_rep_cost) { + bool wrap_possible = (SP_PARM->_curscol + runcount >= + screen_columns(SP_PARM)); + int rep_count = runcount; + + if (wrap_possible) + rep_count--; + + UpdateAttrs(SP_PARM, ntext0); + NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx + TPARM_2(repeat_char, + CharOf(ntext0), + rep_count), + rep_count, + NCURSES_SP_NAME(_nc_outch)); + SP_PARM->_curscol += rep_count; + + if (wrap_possible) + PutChar(NCURSES_SP_ARGx CHREF(ntext0)); + } else { + for (i = 0; i < runcount; i++) + PutChar(NCURSES_SP_ARGx CHREF(ntext[i])); + } + ntext += runcount; + num -= runcount; + } + return 0; + } + + for (i = 0; i < num; i++) + PutChar(NCURSES_SP_ARGx CHREF(ntext[i])); + return 0; +} + +/* + * Output the line in the given range [first .. last] + * + * If there's a run of identical characters that's long enough to justify + * cursor movement, use that also. + * + * Returns: same as EmitRange + */ +static int +PutRange(NCURSES_SP_DCLx + const NCURSES_CH_T * otext, + const NCURSES_CH_T * ntext, + int row, + int first, int last) +{ + int i, j, same; + + TR(TRACE_CHARPUT, ("PutRange(%p, %p, %p, %d, %d, %d)", + (void *) SP_PARM, + (const void *) otext, + (const void *) ntext, + row, first, last)); + + if (otext != ntext + && (last - first + 1) > SP_PARM->_inline_cost) { + for (j = first, same = 0; j <= last; j++) { + if (!same && isWidecExt(otext[j])) + continue; + if (CharEq(otext[j], ntext[j])) { + same++; + } else { + if (same > SP_PARM->_inline_cost) { + EmitRange(NCURSES_SP_ARGx ntext + first, j - same - first); + GoTo(NCURSES_SP_ARGx row, first = j); + } + same = 0; + } + } + i = EmitRange(NCURSES_SP_ARGx ntext + first, j - same - first); + /* + * Always return 1 for the next GoTo() after a PutRange() if we found + * identical characters at end of interval + */ + return (same == 0 ? i : 1); + } + return EmitRange(NCURSES_SP_ARGx ntext + first, last - first + 1); +} + +/* leave unbracketed here so 'indent' works */ +#define MARK_NOCHANGE(win,row) \ + win->_line[row].firstchar = _NOCHANGE; \ + win->_line[row].lastchar = _NOCHANGE; \ + if_USE_SCROLL_HINTS(win->_line[row].oldindex = row) + +NCURSES_EXPORT(int) +TINFO_DOUPDATE(NCURSES_SP_DCL0) +{ + int i; + int nonempty; +#if USE_TRACE_TIMES + struct tms before, after; +#endif /* USE_TRACE_TIMES */ + + T((T_CALLED("_nc_tinfo:doupdate(%p)"), (void *) SP_PARM)); + +#if !USE_REENTRANT + /* + * It is "legal" but unlikely that an application could assign a new + * value to one of the standard windows. Check for that possibility + * and try to recover. + * + * We do not allow applications to assign new values in the reentrant + * model. + */ +#define SyncScreens(internal,exported) \ + if (internal == 0) internal = exported; \ + if (internal != exported) exported = internal + + SyncScreens(CurScreen(SP_PARM), curscr); + SyncScreens(NewScreen(SP_PARM), newscr); + SyncScreens(StdScreen(SP_PARM), stdscr); +#endif + + if (CurScreen(SP_PARM) == 0 + || NewScreen(SP_PARM) == 0 + || StdScreen(SP_PARM) == 0) + returnCode(ERR); + +#ifdef TRACE + if (USE_TRACEF(TRACE_UPDATE)) { + if (CurScreen(SP_PARM)->_clear) + _tracef("curscr is clear"); + else + _tracedump("curscr", CurScreen(SP_PARM)); + _tracedump("newscr", NewScreen(SP_PARM)); + _nc_unlock_global(tracef); + } +#endif /* TRACE */ + + _nc_signal_handler(FALSE); + + if (SP_PARM->_fifohold) + SP_PARM->_fifohold--; + +#if USE_SIZECHANGE + if (SP_PARM->_endwin || _nc_handle_sigwinch(SP_PARM)) { + /* + * This is a transparent extension: XSI does not address it, + * and applications need not know that ncurses can do it. + * + * Check if the terminal size has changed while curses was off + * (this can happen in an xterm, for example), and resize the + * ncurses data structures accordingly. + */ + _nc_update_screensize(SP_PARM); + } +#endif + + if (SP_PARM->_endwin) { + + T(("coming back from shell mode")); + NCURSES_SP_NAME(reset_prog_mode) (NCURSES_SP_ARG); + + NCURSES_SP_NAME(_nc_mvcur_resume) (NCURSES_SP_ARG); + NCURSES_SP_NAME(_nc_screen_resume) (NCURSES_SP_ARG); + SP_PARM->_mouse_resume(SP_PARM); + + SP_PARM->_endwin = FALSE; + } +#if USE_TRACE_TIMES + /* zero the metering machinery */ + RESET_OUTCHARS(); + (void) times(&before); +#endif /* USE_TRACE_TIMES */ + + /* + * This is the support for magic-cookie terminals. The theory: we scan + * the virtual screen looking for attribute turnons. Where we find one, + * check to make sure it's realizable by seeing if the required number of + * un-attributed blanks are present before and after the attributed range; + * try to shift the range boundaries over blanks (not changing the screen + * display) so this becomes true. If it is, shift the beginning attribute + * change appropriately (the end one, if we've gotten this far, is + * guaranteed room for its cookie). If not, nuke the added attributes out + * of the span. + */ +#if USE_XMC_SUPPORT + if (magic_cookie_glitch > 0) { + int j, k; + attr_t rattr = A_NORMAL; + + for (i = 0; i < screen_lines(SP_PARM); i++) { + for (j = 0; j < screen_columns(SP_PARM); j++) { + bool failed = FALSE; + NCURSES_CH_T *thisline = NewScreen(SP_PARM)->_line[i].text; + attr_t thisattr = AttrOf(thisline[j]) & SP_PARM->_xmc_triggers; + attr_t turnon = thisattr & ~rattr; + + /* is an attribute turned on here? */ + if (turnon == 0) { + rattr = thisattr; + continue; + } + + TR(TRACE_ATTRS, ("At (%d, %d): from %s...", i, j, _traceattr(rattr))); + TR(TRACE_ATTRS, ("...to %s", _traceattr(turnon))); + + /* + * If the attribute change location is a blank with a "safe" + * attribute, undo the attribute turnon. This may ensure + * there's enough room to set the attribute before the first + * non-blank in the run. + */ +#define SAFE(scr,a) (!((a) & (scr)->_xmc_triggers)) + if (ISBLANK(thisline[j]) && SAFE(SP_PARM, turnon)) { + RemAttr(thisline[j], turnon); + continue; + } + + /* check that there's enough room at start of span */ + for (k = 1; k <= magic_cookie_glitch; k++) { + if (j - k < 0 + || !ISBLANK(thisline[j - k]) + || !SAFE(SP_PARM, AttrOf(thisline[j - k]))) { + failed = TRUE; + TR(TRACE_ATTRS, ("No room at start in %d,%d%s%s", + i, j - k, + (ISBLANK(thisline[j - k]) + ? "" + : ":nonblank"), + (SAFE(SP_PARM, AttrOf(thisline[j - k])) + ? "" + : ":unsafe"))); + break; + } + } + if (!failed) { + bool end_onscreen = FALSE; + int m, n = j; + + /* find end of span, if it's onscreen */ + for (m = i; m < screen_lines(SP_PARM); m++) { + for (; n < screen_columns(SP_PARM); n++) { + attr_t testattr = + AttrOf(NewScreen(SP_PARM)->_line[m].text[n]); + if ((testattr & SP_PARM->_xmc_triggers) == rattr) { + end_onscreen = TRUE; + TR(TRACE_ATTRS, + ("Range attributed with %s ends at (%d, %d)", + _traceattr(turnon), m, n)); + goto foundit; + } + } + n = 0; + } + TR(TRACE_ATTRS, + ("Range attributed with %s ends offscreen", + _traceattr(turnon))); + foundit:; + + if (end_onscreen) { + NCURSES_CH_T *lastline = + NewScreen(SP_PARM)->_line[m].text; + + /* + * If there are safely-attributed blanks at the end of + * the range, shorten the range. This will help ensure + * that there is enough room at end of span. + */ + while (n >= 0 + && ISBLANK(lastline[n]) + && SAFE(SP_PARM, AttrOf(lastline[n]))) { + RemAttr(lastline[n--], turnon); + } + + /* check that there's enough room at end of span */ + for (k = 1; k <= magic_cookie_glitch; k++) { + if (n + k >= screen_columns(SP_PARM) + || !ISBLANK(lastline[n + k]) + || !SAFE(SP_PARM, AttrOf(lastline[n + k]))) { + failed = TRUE; + TR(TRACE_ATTRS, + ("No room at end in %d,%d%s%s", + i, j - k, + (ISBLANK(lastline[n + k]) + ? "" + : ":nonblank"), + (SAFE(SP_PARM, AttrOf(lastline[n + k])) + ? "" + : ":unsafe"))); + break; + } + } + } + } + + if (failed) { + int p, q = j; + + TR(TRACE_ATTRS, + ("Clearing %s beginning at (%d, %d)", + _traceattr(turnon), i, j)); + + /* turn off new attributes over span */ + for (p = i; p < screen_lines(SP_PARM); p++) { + for (; q < screen_columns(SP_PARM); q++) { + attr_t testattr = AttrOf(newscr->_line[p].text[q]); + if ((testattr & SP_PARM->_xmc_triggers) == rattr) + goto foundend; + RemAttr(NewScreen(SP_PARM)->_line[p].text[q], turnon); + } + q = 0; + } + foundend:; + } else { + TR(TRACE_ATTRS, + ("Cookie space for %s found before (%d, %d)", + _traceattr(turnon), i, j)); + + /* + * Back up the start of range so there's room for cookies + * before the first nonblank character. + */ + for (k = 1; k <= magic_cookie_glitch; k++) + AddAttr(thisline[j - k], turnon); + } + + rattr = thisattr; + } + } + +#ifdef TRACE + /* show altered highlights after magic-cookie check */ + if (USE_TRACEF(TRACE_UPDATE)) { + _tracef("After magic-cookie check..."); + _tracedump("newscr", NewScreen(SP_PARM)); + _nc_unlock_global(tracef); + } +#endif /* TRACE */ + } +#endif /* USE_XMC_SUPPORT */ + + nonempty = 0; + if (CurScreen(SP_PARM)->_clear || NewScreen(SP_PARM)->_clear) { /* force refresh ? */ + ClrUpdate(NCURSES_SP_ARG); + CurScreen(SP_PARM)->_clear = FALSE; /* reset flag */ + NewScreen(SP_PARM)->_clear = FALSE; /* reset flag */ + } else { + int changedlines = CHECK_INTERVAL; + + if (check_pending(NCURSES_SP_ARG)) + goto cleanup; + + nonempty = min(screen_lines(SP_PARM), NewScreen(SP_PARM)->_maxy + 1); + + if (SP_PARM->_scrolling) { + NCURSES_SP_NAME(_nc_scroll_optimize) (NCURSES_SP_ARG); + } + + nonempty = ClrBottom(NCURSES_SP_ARGx nonempty); + + TR(TRACE_UPDATE, ("Transforming lines, nonempty %d", nonempty)); + for (i = 0; i < nonempty; i++) { + /* + * Here is our line-breakout optimization. + */ + if (changedlines == CHECK_INTERVAL) { + if (check_pending(NCURSES_SP_ARG)) + goto cleanup; + changedlines = 0; + } + + /* + * newscr->line[i].firstchar is normally set + * by wnoutrefresh. curscr->line[i].firstchar + * is normally set by _nc_scroll_window in the + * vertical-movement optimization code, + */ + if (NewScreen(SP_PARM)->_line[i].firstchar != _NOCHANGE + || CurScreen(SP_PARM)->_line[i].firstchar != _NOCHANGE) { + TransformLine(NCURSES_SP_ARGx i); + changedlines++; + } + + /* mark line changed successfully */ + if (i <= NewScreen(SP_PARM)->_maxy) { + MARK_NOCHANGE(NewScreen(SP_PARM), i); + } + if (i <= CurScreen(SP_PARM)->_maxy) { + MARK_NOCHANGE(CurScreen(SP_PARM), i); + } + } + } + + /* put everything back in sync */ + for (i = nonempty; i <= NewScreen(SP_PARM)->_maxy; i++) { + MARK_NOCHANGE(NewScreen(SP_PARM), i); + } + for (i = nonempty; i <= CurScreen(SP_PARM)->_maxy; i++) { + MARK_NOCHANGE(CurScreen(SP_PARM), i); + } + + if (!NewScreen(SP_PARM)->_leaveok) { + CurScreen(SP_PARM)->_curx = NewScreen(SP_PARM)->_curx; + CurScreen(SP_PARM)->_cury = NewScreen(SP_PARM)->_cury; + + GoTo(NCURSES_SP_ARGx CurScreen(SP_PARM)->_cury, CurScreen(SP_PARM)->_curx); + } + + cleanup: + /* + * We would like to keep the physical screen in normal mode in case we get + * other processes writing to the screen. This goal cannot be met for + * magic cookies since it interferes with attributes that may propagate + * past the current position. + */ +#if USE_XMC_SUPPORT + if (magic_cookie_glitch != 0) +#endif + UpdateAttrs(SP_PARM, normal); + + NCURSES_SP_NAME(_nc_flush) (NCURSES_SP_ARG); + WINDOW_ATTRS(CurScreen(SP_PARM)) = WINDOW_ATTRS(NewScreen(SP_PARM)); + +#if USE_TRACE_TIMES + (void) times(&after); + TR(TRACE_TIMES, + ("Update cost: %ld chars, %ld clocks system time, %ld clocks user time", + _nc_outchars, + (long) (after.tms_stime - before.tms_stime), + (long) (after.tms_utime - before.tms_utime))); +#endif /* USE_TRACE_TIMES */ + + _nc_signal_handler(TRUE); + + returnCode(OK); +} + +#if NCURSES_SP_FUNCS && !defined(USE_TERM_DRIVER) +NCURSES_EXPORT(int) +doupdate(void) +{ + return TINFO_DOUPDATE(CURRENT_SCREEN); +} +#endif + +/* + * ClrBlank(win) + * + * Returns the attributed character that corresponds to the "cleared" + * screen. If the terminal has the back-color-erase feature, this will be + * colored according to the wbkgd() call. + * + * We treat 'curscr' specially because it isn't supposed to be set directly + * in the wbkgd() call. Assume 'stdscr' for this case. + */ +#define BCE_ATTRS (A_NORMAL|A_COLOR) +#define BCE_BKGD(sp,win) (((win) == CurScreen(sp) ? StdScreen(sp) : (win))->_nc_bkgd) + +static NCURSES_INLINE NCURSES_CH_T +ClrBlank(NCURSES_SP_DCLx WINDOW *win) +{ + NCURSES_CH_T blank = blankchar; + if (back_color_erase) + AddAttr(blank, (AttrOf(BCE_BKGD(SP_PARM, win)) & BCE_ATTRS)); + return blank; +} + +/* +** ClrUpdate() +** +** Update by clearing and redrawing the entire screen. +** +*/ + +static void +ClrUpdate(NCURSES_SP_DCL0) +{ + TR(TRACE_UPDATE, (T_CALLED("ClrUpdate"))); + if (0 != SP_PARM) { + int i; + NCURSES_CH_T blank = ClrBlank(NCURSES_SP_ARGx StdScreen(SP_PARM)); + int nonempty = min(screen_lines(SP_PARM), + NewScreen(SP_PARM)->_maxy + 1); + + ClearScreen(NCURSES_SP_ARGx blank); + + TR(TRACE_UPDATE, ("updating screen from scratch")); + + nonempty = ClrBottom(NCURSES_SP_ARGx nonempty); + + for (i = 0; i < nonempty; i++) + TransformLine(NCURSES_SP_ARGx i); + } + TR(TRACE_UPDATE, (T_RETURN(""))); +} + +/* +** ClrToEOL(blank) +** +** Clear to end of current line, starting at the cursor position +*/ + +static void +ClrToEOL(NCURSES_SP_DCLx NCURSES_CH_T blank, bool needclear) +{ + int j; + + if (SP_PARM != 0) { + if (CurScreen(SP_PARM) != 0 + && SP_PARM->_cursrow >= 0) { + for (j = SP_PARM->_curscol; j < screen_columns(SP_PARM); j++) { + if (j >= 0) { + NCURSES_CH_T *cp = + &(CurScreen(SP_PARM)->_line[SP_PARM->_cursrow].text[j]); + + if (!CharEq(*cp, blank)) { + *cp = blank; + needclear = TRUE; + } + } + } + } + } + + if (needclear && (SP_PARM != 0)) { + UpdateAttrs(SP_PARM, blank); + TPUTS_TRACE("clr_eol"); + if (clr_eol && SP_PARM->_el_cost <= (screen_columns(SP_PARM) - SP_PARM->_curscol)) { + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx clr_eol); + } else { + int count = (screen_columns(SP_PARM) - SP_PARM->_curscol); + while (count-- > 0) + PutChar(NCURSES_SP_ARGx CHREF(blank)); + } + } +} + +/* +** ClrToEOS(blank) +** +** Clear to end of screen, starting at the cursor position +*/ + +static void +ClrToEOS(NCURSES_SP_DCLx NCURSES_CH_T blank) +{ + int row, col; + + if (0 == SP_PARM) + return; + + row = SP_PARM->_cursrow; + col = SP_PARM->_curscol; + + UpdateAttrs(SP_PARM, blank); + TPUTS_TRACE("clr_eos"); + NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx + clr_eos, + screen_lines(SP_PARM) - row, + NCURSES_SP_NAME(_nc_outch)); + + while (col < screen_columns(SP_PARM)) + CurScreen(SP_PARM)->_line[row].text[col++] = blank; + + for (row++; row < screen_lines(SP_PARM); row++) { + for (col = 0; col < screen_columns(SP_PARM); col++) + CurScreen(SP_PARM)->_line[row].text[col] = blank; + } +} + +/* + * ClrBottom(total) + * + * Test if clearing the end of the screen would satisfy part of the + * screen-update. Do this by scanning backwards through the lines in the + * screen, checking if each is blank, and one or more are changed. + */ +static int +ClrBottom(NCURSES_SP_DCLx int total) +{ + int row; + int col; + int top = total; + int last = min(screen_columns(SP_PARM), NewScreen(SP_PARM)->_maxx + 1); + NCURSES_CH_T blank = NewScreen(SP_PARM)->_line[total - 1].text[last - 1]; + bool ok; + + if (clr_eos && can_clear_with(NCURSES_SP_ARGx CHREF(blank))) { + + for (row = total - 1; row >= 0; row--) { + for (col = 0, ok = TRUE; ok && col < last; col++) { + ok = (CharEq(NewScreen(SP_PARM)->_line[row].text[col], blank)); + } + if (!ok) + break; + + for (col = 0; ok && col < last; col++) { + ok = (CharEq(CurScreen(SP_PARM)->_line[row].text[col], blank)); + } + if (!ok) + top = row; + } + + /* don't use clr_eos for just one line if clr_eol available */ + if (top < total) { + GoTo(NCURSES_SP_ARGx top, 0); + ClrToEOS(NCURSES_SP_ARGx blank); + if (SP_PARM->oldhash && SP_PARM->newhash) { + for (row = top; row < screen_lines(SP_PARM); row++) + SP_PARM->oldhash[row] = SP_PARM->newhash[row]; + } + } + } + return top; +} + +#if USE_XMC_SUPPORT +#if USE_WIDEC_SUPPORT +#define check_xmc_transition(sp, a, b) \ + ((((a)->attr ^ (b)->attr) & ~((a)->attr) & (sp)->_xmc_triggers) != 0) +#define xmc_turn_on(sp,a,b) check_xmc_transition(sp,&(a), &(b)) +#else +#define xmc_turn_on(sp,a,b) ((((a)^(b)) & ~(a) & (sp)->_xmc_triggers) != 0) +#endif + +#define xmc_new(sp,r,c) NewScreen(sp)->_line[r].text[c] +#define xmc_turn_off(sp,a,b) xmc_turn_on(sp,b,a) +#endif /* USE_XMC_SUPPORT */ + +/* +** TransformLine(lineno) +** +** Transform the given line in curscr to the one in newscr, using +** Insert/Delete Character if idcok && has_ic(). +** +** firstChar = position of first different character in line +** oLastChar = position of last different character in old line +** nLastChar = position of last different character in new line +** +** move to firstChar +** overwrite chars up to min(oLastChar, nLastChar) +** if oLastChar < nLastChar +** insert newLine[oLastChar+1..nLastChar] +** else +** delete oLastChar - nLastChar spaces +*/ + +static void +TransformLine(NCURSES_SP_DCLx int const lineno) +{ + int firstChar, oLastChar, nLastChar; + NCURSES_CH_T *newLine = NewScreen(SP_PARM)->_line[lineno].text; + NCURSES_CH_T *oldLine = CurScreen(SP_PARM)->_line[lineno].text; + int n; + bool attrchanged = FALSE; + + TR(TRACE_UPDATE, (T_CALLED("TransformLine(%p, %d)"), (void *) SP_PARM, lineno)); + + /* copy new hash value to old one */ + if (SP_PARM->oldhash && SP_PARM->newhash) + SP_PARM->oldhash[lineno] = SP_PARM->newhash[lineno]; + + /* + * If we have colors, there is the possibility of having two color pairs + * that display as the same colors. For instance, Lynx does this. Check + * for this case, and update the old line with the new line's colors when + * they are equivalent. + */ + if (SP_PARM->_coloron) { + int oldPair; + int newPair; + + for (n = 0; n < screen_columns(SP_PARM); n++) { + if (!CharEq(newLine[n], oldLine[n])) { + oldPair = GetPair(oldLine[n]); + newPair = GetPair(newLine[n]); + if (oldPair != newPair + && unColor(oldLine[n]) == unColor(newLine[n])) { + if (oldPair < SP_PARM->_pair_limit + && newPair < SP_PARM->_pair_limit + && (SP_PARM->_color_pairs[oldPair] == + SP_PARM->_color_pairs[newPair])) { + SetPair(oldLine[n], GetPair(newLine[n])); + } + } + } + } + } + + if (ceol_standout_glitch && clr_eol) { + firstChar = 0; + while (firstChar < screen_columns(SP_PARM)) { + if (!SameAttrOf(newLine[firstChar], oldLine[firstChar])) { + attrchanged = TRUE; + break; + } + firstChar++; + } + } + + firstChar = 0; + + if (attrchanged) { /* we may have to disregard the whole line */ + GoTo(NCURSES_SP_ARGx lineno, firstChar); + ClrToEOL(NCURSES_SP_ARGx + ClrBlank(NCURSES_SP_ARGx + CurScreen(SP_PARM)), FALSE); + PutRange(NCURSES_SP_ARGx + oldLine, newLine, lineno, 0, + screen_columns(SP_PARM) - 1); +#if USE_XMC_SUPPORT + + /* + * This is a very simple loop to paint characters which may have the + * magic cookie glitch embedded. It doesn't know much about video + * attributes which are continued from one line to the next. It + * assumes that we have filtered out requests for attribute changes + * that do not get mapped to blank positions. + * + * FIXME: we are not keeping track of where we put the cookies, so this + * will work properly only once, since we may overwrite a cookie in a + * following operation. + */ + } else if (magic_cookie_glitch > 0) { + GoTo(NCURSES_SP_ARGx lineno, firstChar); + for (n = 0; n < screen_columns(SP_PARM); n++) { + int m = n + magic_cookie_glitch; + + /* check for turn-on: + * If we are writing an attributed blank, where the + * previous cell is not attributed. + */ + if (ISBLANK(newLine[n]) + && ((n > 0 + && xmc_turn_on(SP_PARM, newLine[n - 1], newLine[n])) + || (n == 0 + && lineno > 0 + && xmc_turn_on(SP_PARM, + xmc_new(SP_PARM, lineno - 1, + screen_columns(SP_PARM) - 1), + newLine[n])))) { + n = m; + } + + PutChar(NCURSES_SP_ARGx CHREF(newLine[n])); + + /* check for turn-off: + * If we are writing an attributed non-blank, where the + * next cell is blank, and not attributed. + */ + if (!ISBLANK(newLine[n]) + && ((n + 1 < screen_columns(SP_PARM) + && xmc_turn_off(SP_PARM, newLine[n], newLine[n + 1])) + || (n + 1 >= screen_columns(SP_PARM) + && lineno + 1 < screen_lines(SP_PARM) + && xmc_turn_off(SP_PARM, + newLine[n], + xmc_new(SP_PARM, lineno + 1, 0))))) { + n = m; + } + + } +#endif + } else { + NCURSES_CH_T blank; + + /* it may be cheap to clear leading whitespace with clr_bol */ + blank = newLine[0]; + if (clr_bol && can_clear_with(NCURSES_SP_ARGx CHREF(blank))) { + int oFirstChar, nFirstChar; + + for (oFirstChar = 0; + oFirstChar < screen_columns(SP_PARM); + oFirstChar++) + if (!CharEq(oldLine[oFirstChar], blank)) + break; + for (nFirstChar = 0; + nFirstChar < screen_columns(SP_PARM); + nFirstChar++) + if (!CharEq(newLine[nFirstChar], blank)) + break; + + if (nFirstChar == oFirstChar) { + firstChar = nFirstChar; + /* find the first differing character */ + while (firstChar < screen_columns(SP_PARM) + && CharEq(newLine[firstChar], oldLine[firstChar])) + firstChar++; + } else if (oFirstChar > nFirstChar) { + firstChar = nFirstChar; + } else { /* oFirstChar < nFirstChar */ + firstChar = oFirstChar; + if (SP_PARM->_el1_cost < nFirstChar - oFirstChar) { + if (nFirstChar >= screen_columns(SP_PARM) + && SP_PARM->_el_cost <= SP_PARM->_el1_cost) { + GoTo(NCURSES_SP_ARGx lineno, 0); + UpdateAttrs(SP_PARM, blank); + TPUTS_TRACE("clr_eol"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx clr_eol); + } else { + GoTo(NCURSES_SP_ARGx lineno, nFirstChar - 1); + UpdateAttrs(SP_PARM, blank); + TPUTS_TRACE("clr_bol"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx clr_bol); + } + + while (firstChar < nFirstChar) + oldLine[firstChar++] = blank; + } + } + } else { + /* find the first differing character */ + while (firstChar < screen_columns(SP_PARM) + && CharEq(newLine[firstChar], oldLine[firstChar])) + firstChar++; + } + /* if there wasn't one, we're done */ + if (firstChar >= screen_columns(SP_PARM)) { + TR(TRACE_UPDATE, (T_RETURN(""))); + return; + } + + blank = newLine[screen_columns(SP_PARM) - 1]; + + if (!can_clear_with(NCURSES_SP_ARGx CHREF(blank))) { + /* find the last differing character */ + nLastChar = screen_columns(SP_PARM) - 1; + + while (nLastChar > firstChar + && CharEq(newLine[nLastChar], oldLine[nLastChar])) + nLastChar--; + + if (nLastChar >= firstChar) { + GoTo(NCURSES_SP_ARGx lineno, firstChar); + PutRange(NCURSES_SP_ARGx + oldLine, + newLine, + lineno, + firstChar, + nLastChar); + memcpy(oldLine + firstChar, + newLine + firstChar, + (unsigned) (nLastChar - firstChar + 1) * sizeof(NCURSES_CH_T)); + } + TR(TRACE_UPDATE, (T_RETURN(""))); + return; + } + + /* find last non-blank character on old line */ + oLastChar = screen_columns(SP_PARM) - 1; + while (oLastChar > firstChar && CharEq(oldLine[oLastChar], blank)) + oLastChar--; + + /* find last non-blank character on new line */ + nLastChar = screen_columns(SP_PARM) - 1; + while (nLastChar > firstChar && CharEq(newLine[nLastChar], blank)) + nLastChar--; + + if ((nLastChar == firstChar) + && (SP_PARM->_el_cost < (oLastChar - nLastChar))) { + GoTo(NCURSES_SP_ARGx lineno, firstChar); + if (!CharEq(newLine[firstChar], blank)) + PutChar(NCURSES_SP_ARGx CHREF(newLine[firstChar])); + ClrToEOL(NCURSES_SP_ARGx blank, FALSE); + } else if ((nLastChar != oLastChar) + && (!CharEq(newLine[nLastChar], oldLine[oLastChar]) + || !(SP_PARM->_nc_sp_idcok + && NCURSES_SP_NAME(has_ic) (NCURSES_SP_ARG)))) { + GoTo(NCURSES_SP_ARGx lineno, firstChar); + if ((oLastChar - nLastChar) > SP_PARM->_el_cost) { + if (PutRange(NCURSES_SP_ARGx + oldLine, + newLine, + lineno, + firstChar, + nLastChar)) { + GoTo(NCURSES_SP_ARGx lineno, nLastChar + 1); + } + ClrToEOL(NCURSES_SP_ARGx blank, FALSE); + } else { + n = max(nLastChar, oLastChar); + PutRange(NCURSES_SP_ARGx + oldLine, + newLine, + lineno, + firstChar, + n); + } + } else { + int nLastNonblank = nLastChar; + int oLastNonblank = oLastChar; + + /* find the last characters that really differ */ + /* can be -1 if no characters differ */ + while (CharEq(newLine[nLastChar], oldLine[oLastChar])) { + /* don't split a wide char */ + if (isWidecExt(newLine[nLastChar]) && + !CharEq(newLine[nLastChar - 1], oldLine[oLastChar - 1])) + break; + nLastChar--; + oLastChar--; + if (nLastChar == -1 || oLastChar == -1) + break; + } + + n = min(oLastChar, nLastChar); + if (n >= firstChar) { + GoTo(NCURSES_SP_ARGx lineno, firstChar); + PutRange(NCURSES_SP_ARGx + oldLine, + newLine, + lineno, + firstChar, + n); + } + + if (oLastChar < nLastChar) { + int m = max(nLastNonblank, oLastNonblank); +#if USE_WIDEC_SUPPORT + while (isWidecExt(newLine[n + 1]) && n) { + --n; + --oLastChar; + } +#endif + GoTo(NCURSES_SP_ARGx lineno, n + 1); + if ((nLastChar < nLastNonblank) + || InsCharCost(SP_PARM, nLastChar - oLastChar) > (m - n)) { + PutRange(NCURSES_SP_ARGx + oldLine, + newLine, + lineno, + n + 1, + m); + } else { + InsStr(NCURSES_SP_ARGx &newLine[n + 1], nLastChar - oLastChar); + } + } else if (oLastChar > nLastChar) { + GoTo(NCURSES_SP_ARGx lineno, n + 1); + if (DelCharCost(SP_PARM, oLastChar - nLastChar) + > SP_PARM->_el_cost + nLastNonblank - (n + 1)) { + if (PutRange(NCURSES_SP_ARGx oldLine, newLine, lineno, + n + 1, nLastNonblank)) + GoTo(NCURSES_SP_ARGx lineno, nLastNonblank + 1); + ClrToEOL(NCURSES_SP_ARGx blank, FALSE); + } else { + /* + * The delete-char sequence will + * effectively shift in blanks from the + * right margin of the screen. Ensure + * that they are the right color by + * setting the video attributes from + * the last character on the row. + */ + UpdateAttrs(SP_PARM, blank); + DelChar(NCURSES_SP_ARGx oLastChar - nLastChar); + } + } + } + } + + /* update the code's internal representation */ + if (screen_columns(SP_PARM) > firstChar) + memcpy(oldLine + firstChar, + newLine + firstChar, + (unsigned) (screen_columns(SP_PARM) - firstChar) * sizeof(NCURSES_CH_T)); + TR(TRACE_UPDATE, (T_RETURN(""))); + return; +} + +/* +** ClearScreen(blank) +** +** Clear the physical screen and put cursor at home +** +*/ + +static void +ClearScreen(NCURSES_SP_DCLx NCURSES_CH_T blank) +{ + int i, j; + bool fast_clear = (clear_screen || clr_eos || clr_eol); + + TR(TRACE_UPDATE, ("ClearScreen() called")); + +#if NCURSES_EXT_FUNCS + if (SP_PARM->_coloron + && !SP_PARM->_default_color) { + NCURSES_SP_NAME(_nc_do_color) (NCURSES_SP_ARGx + (short) GET_SCREEN_PAIR(SP_PARM), + 0, + FALSE, + NCURSES_SP_NAME(_nc_outch)); + if (!back_color_erase) { + fast_clear = FALSE; + } + } +#endif + + if (fast_clear) { + if (clear_screen) { + UpdateAttrs(SP_PARM, blank); + TPUTS_TRACE("clear_screen"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx clear_screen); + SP_PARM->_cursrow = SP_PARM->_curscol = 0; + position_check(SP_PARM, + SP_PARM->_cursrow, + SP_PARM->_curscol, + "ClearScreen"); + } else if (clr_eos) { + SP_PARM->_cursrow = SP_PARM->_curscol = -1; + GoTo(NCURSES_SP_ARGx 0, 0); + UpdateAttrs(SP_PARM, blank); + TPUTS_TRACE("clr_eos"); + NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx + clr_eos, + screen_lines(SP_PARM), + NCURSES_SP_NAME(_nc_outch)); + } else if (clr_eol) { + SP_PARM->_cursrow = SP_PARM->_curscol = -1; + UpdateAttrs(SP_PARM, blank); + for (i = 0; i < screen_lines(SP_PARM); i++) { + GoTo(NCURSES_SP_ARGx i, 0); + TPUTS_TRACE("clr_eol"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx clr_eol); + } + GoTo(NCURSES_SP_ARGx 0, 0); + } + } else { + UpdateAttrs(SP_PARM, blank); + for (i = 0; i < screen_lines(SP_PARM); i++) { + GoTo(NCURSES_SP_ARGx i, 0); + for (j = 0; j < screen_columns(SP_PARM); j++) + PutChar(NCURSES_SP_ARGx CHREF(blank)); + } + GoTo(NCURSES_SP_ARGx 0, 0); + } + + for (i = 0; i < screen_lines(SP_PARM); i++) { + for (j = 0; j < screen_columns(SP_PARM); j++) + CurScreen(SP_PARM)->_line[i].text[j] = blank; + } + + TR(TRACE_UPDATE, ("screen cleared")); +} + +/* +** InsStr(line, count) +** +** Insert the count characters pointed to by line. +** +*/ + +static void +InsStr(NCURSES_SP_DCLx NCURSES_CH_T * line, int count) +{ + TR(TRACE_UPDATE, ("InsStr(%p, %p,%d) called", + (void *) SP_PARM, + (void *) line, count)); + + /* Prefer parm_ich as it has the smallest cost - no need to shift + * the whole line on each character. */ + /* The order must match that of InsCharCost. */ + if (parm_ich) { + TPUTS_TRACE("parm_ich"); + NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx + TPARM_1(parm_ich, count), + count, + NCURSES_SP_NAME(_nc_outch)); + while (count) { + PutAttrChar(NCURSES_SP_ARGx CHREF(*line)); + line++; + count--; + } + } else if (enter_insert_mode && exit_insert_mode) { + TPUTS_TRACE("enter_insert_mode"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx enter_insert_mode); + while (count) { + PutAttrChar(NCURSES_SP_ARGx CHREF(*line)); + if (insert_padding) { + TPUTS_TRACE("insert_padding"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx insert_padding); + } + line++; + count--; + } + TPUTS_TRACE("exit_insert_mode"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx exit_insert_mode); + } else { + while (count) { + TPUTS_TRACE("insert_character"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx insert_character); + PutAttrChar(NCURSES_SP_ARGx CHREF(*line)); + if (insert_padding) { + TPUTS_TRACE("insert_padding"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx insert_padding); + } + line++; + count--; + } + } + position_check(SP_PARM, SP_PARM->_cursrow, SP_PARM->_curscol, "InsStr"); +} + +/* +** DelChar(count) +** +** Delete count characters at current position +** +*/ + +static void +DelChar(NCURSES_SP_DCLx int count) +{ + int n; + + TR(TRACE_UPDATE, ("DelChar(%p, %d) called, position = (%ld,%ld)", + (void *) SP_PARM, count, + (long) NewScreen(SP_PARM)->_cury, + (long) NewScreen(SP_PARM)->_curx)); + + if (parm_dch) { + TPUTS_TRACE("parm_dch"); + NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx + TPARM_1(parm_dch, count), + count, + NCURSES_SP_NAME(_nc_outch)); + } else { + for (n = 0; n < count; n++) { + TPUTS_TRACE("delete_character"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx delete_character); + } + } +} + +/* + * Physical-scrolling support + * + * This code was adapted from Keith Bostic's hardware scrolling + * support for 4.4BSD curses. I (esr) translated it to use terminfo + * capabilities, narrowed the call interface slightly, and cleaned + * up some convoluted tests. I also added support for the memory_above + * memory_below, and non_dest_scroll_region capabilities. + * + * For this code to work, we must have either + * change_scroll_region and scroll forward/reverse commands, or + * insert and delete line capabilities. + * When the scrolling region has been set, the cursor has to + * be at the last line of the region to make the scroll up + * happen, or on the first line of region to scroll down. + * + * This code makes one aesthetic decision in the opposite way from + * BSD curses. BSD curses preferred pairs of il/dl operations + * over scrolls, allegedly because il/dl looked faster. We, on + * the other hand, prefer scrolls because (a) they're just as fast + * on many terminals and (b) using them avoids bouncing an + * unchanged bottom section of the screen up and down, which is + * visually nasty. + * + * (lav): added more cases, used dl/il when bot==maxy and in csr case. + * + * I used assumption that capabilities il/il1/dl/dl1 work inside + * changed scroll region not shifting screen contents outside of it. + * If there are any terminals behaving different way, it would be + * necessary to add some conditions to scroll_csr_forward/backward. + */ + +/* Try to scroll up assuming given csr (miny, maxy). Returns ERR on failure */ +static int +scroll_csr_forward(NCURSES_SP_DCLx + int n, + int top, + int bot, + int miny, + int maxy, + NCURSES_CH_T blank) +{ + int i; + + if (n == 1 && scroll_forward && top == miny && bot == maxy) { + GoTo(NCURSES_SP_ARGx bot, 0); + UpdateAttrs(SP_PARM, blank); + TPUTS_TRACE("scroll_forward"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx scroll_forward); + } else if (n == 1 && delete_line && bot == maxy) { + GoTo(NCURSES_SP_ARGx top, 0); + UpdateAttrs(SP_PARM, blank); + TPUTS_TRACE("delete_line"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx delete_line); + } else if (parm_index && top == miny && bot == maxy) { + GoTo(NCURSES_SP_ARGx bot, 0); + UpdateAttrs(SP_PARM, blank); + TPUTS_TRACE("parm_index"); + NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx + TPARM_2(parm_index, n, 0), + n, + NCURSES_SP_NAME(_nc_outch)); + } else if (parm_delete_line && bot == maxy) { + GoTo(NCURSES_SP_ARGx top, 0); + UpdateAttrs(SP_PARM, blank); + TPUTS_TRACE("parm_delete_line"); + NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx + TPARM_2(parm_delete_line, n, 0), + n, + NCURSES_SP_NAME(_nc_outch)); + } else if (scroll_forward && top == miny && bot == maxy) { + GoTo(NCURSES_SP_ARGx bot, 0); + UpdateAttrs(SP_PARM, blank); + for (i = 0; i < n; i++) { + TPUTS_TRACE("scroll_forward"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx scroll_forward); + } + } else if (delete_line && bot == maxy) { + GoTo(NCURSES_SP_ARGx top, 0); + UpdateAttrs(SP_PARM, blank); + for (i = 0; i < n; i++) { + TPUTS_TRACE("delete_line"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx delete_line); + } + } else + return ERR; + +#if NCURSES_EXT_FUNCS + if (FILL_BCE(SP_PARM)) { + int j; + for (i = 0; i < n; i++) { + GoTo(NCURSES_SP_ARGx bot - i, 0); + for (j = 0; j < screen_columns(SP_PARM); j++) + PutChar(NCURSES_SP_ARGx CHREF(blank)); + } + } +#endif + return OK; +} + +/* Try to scroll down assuming given csr (miny, maxy). Returns ERR on failure */ +/* n > 0 */ +static int +scroll_csr_backward(NCURSES_SP_DCLx + int n, + int top, + int bot, + int miny, + int maxy, + NCURSES_CH_T blank) +{ + int i; + + if (n == 1 && scroll_reverse && top == miny && bot == maxy) { + GoTo(NCURSES_SP_ARGx top, 0); + UpdateAttrs(SP_PARM, blank); + TPUTS_TRACE("scroll_reverse"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx scroll_reverse); + } else if (n == 1 && insert_line && bot == maxy) { + GoTo(NCURSES_SP_ARGx top, 0); + UpdateAttrs(SP_PARM, blank); + TPUTS_TRACE("insert_line"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx insert_line); + } else if (parm_rindex && top == miny && bot == maxy) { + GoTo(NCURSES_SP_ARGx top, 0); + UpdateAttrs(SP_PARM, blank); + TPUTS_TRACE("parm_rindex"); + NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx + TPARM_2(parm_rindex, n, 0), + n, + NCURSES_SP_NAME(_nc_outch)); + } else if (parm_insert_line && bot == maxy) { + GoTo(NCURSES_SP_ARGx top, 0); + UpdateAttrs(SP_PARM, blank); + TPUTS_TRACE("parm_insert_line"); + NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx + TPARM_2(parm_insert_line, n, 0), + n, + NCURSES_SP_NAME(_nc_outch)); + } else if (scroll_reverse && top == miny && bot == maxy) { + GoTo(NCURSES_SP_ARGx top, 0); + UpdateAttrs(SP_PARM, blank); + for (i = 0; i < n; i++) { + TPUTS_TRACE("scroll_reverse"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx scroll_reverse); + } + } else if (insert_line && bot == maxy) { + GoTo(NCURSES_SP_ARGx top, 0); + UpdateAttrs(SP_PARM, blank); + for (i = 0; i < n; i++) { + TPUTS_TRACE("insert_line"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx insert_line); + } + } else + return ERR; + +#if NCURSES_EXT_FUNCS + if (FILL_BCE(SP_PARM)) { + int j; + for (i = 0; i < n; i++) { + GoTo(NCURSES_SP_ARGx top + i, 0); + for (j = 0; j < screen_columns(SP_PARM); j++) + PutChar(NCURSES_SP_ARGx CHREF(blank)); + } + } +#endif + return OK; +} + +/* scroll by using delete_line at del and insert_line at ins */ +/* n > 0 */ +static int +scroll_idl(NCURSES_SP_DCLx int n, int del, int ins, NCURSES_CH_T blank) +{ + int i; + + if (!((parm_delete_line || delete_line) && (parm_insert_line || insert_line))) + return ERR; + + GoTo(NCURSES_SP_ARGx del, 0); + UpdateAttrs(SP_PARM, blank); + if (n == 1 && delete_line) { + TPUTS_TRACE("delete_line"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx delete_line); + } else if (parm_delete_line) { + TPUTS_TRACE("parm_delete_line"); + NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx + TPARM_2(parm_delete_line, n, 0), + n, + NCURSES_SP_NAME(_nc_outch)); + } else { /* if (delete_line) */ + for (i = 0; i < n; i++) { + TPUTS_TRACE("delete_line"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx delete_line); + } + } + + GoTo(NCURSES_SP_ARGx ins, 0); + UpdateAttrs(SP_PARM, blank); + if (n == 1 && insert_line) { + TPUTS_TRACE("insert_line"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx insert_line); + } else if (parm_insert_line) { + TPUTS_TRACE("parm_insert_line"); + NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx + TPARM_2(parm_insert_line, n, 0), + n, + NCURSES_SP_NAME(_nc_outch)); + } else { /* if (insert_line) */ + for (i = 0; i < n; i++) { + TPUTS_TRACE("insert_line"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx insert_line); + } + } + + return OK; +} + +/* + * Note: some terminals require the cursor to be within the scrolling margins + * before setting them. Generally, the cursor must be at the appropriate end + * of the scrolling margins when issuing an indexing operation (it is not + * apparent whether it must also be at the left margin; we do this just to be + * safe). To make the related cursor movement a little faster, we use the + * save/restore cursor capabilities if the terminal has them. + */ +NCURSES_EXPORT(int) +NCURSES_SP_NAME(_nc_scrolln) (NCURSES_SP_DCLx + int n, + int top, + int bot, + int maxy) +/* scroll region from top to bot by n lines */ +{ + NCURSES_CH_T blank; + int i; + bool cursor_saved = FALSE; + int res; + + TR(TRACE_MOVE, ("_nc_scrolln(%p, %d, %d, %d, %d)", + (void *) SP_PARM, n, top, bot, maxy)); + + if (!IsValidScreen(SP_PARM)) + return (ERR); + + blank = ClrBlank(NCURSES_SP_ARGx StdScreen(SP_PARM)); + +#if USE_XMC_SUPPORT + /* + * If we scroll, we might remove a cookie. + */ + if (magic_cookie_glitch > 0) { + return (ERR); + } +#endif + + if (n > 0) { /* scroll up (forward) */ + /* + * Explicitly clear if stuff pushed off top of region might + * be saved by the terminal. + */ + res = scroll_csr_forward(NCURSES_SP_ARGx n, top, bot, 0, maxy, blank); + + if (res == ERR && change_scroll_region) { + if ((((n == 1 && scroll_forward) || parm_index) + && (SP_PARM->_cursrow == bot || SP_PARM->_cursrow == bot - 1)) + && save_cursor && restore_cursor) { + cursor_saved = TRUE; + TPUTS_TRACE("save_cursor"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx save_cursor); + } + TPUTS_TRACE("change_scroll_region"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx + TPARM_2(change_scroll_region, top, bot)); + if (cursor_saved) { + TPUTS_TRACE("restore_cursor"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx restore_cursor); + } else { + SP_PARM->_cursrow = SP_PARM->_curscol = -1; + } + + res = scroll_csr_forward(NCURSES_SP_ARGx n, top, bot, top, bot, blank); + + TPUTS_TRACE("change_scroll_region"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx + TPARM_2(change_scroll_region, 0, maxy)); + SP_PARM->_cursrow = SP_PARM->_curscol = -1; + } + + if (res == ERR && SP_PARM->_nc_sp_idlok) + res = scroll_idl(NCURSES_SP_ARGx n, top, bot - n + 1, blank); + + /* + * Clear the newly shifted-in text. + */ + if (res != ERR + && (non_dest_scroll_region || (memory_below && bot == maxy))) { + static const NCURSES_CH_T blank2 = NewChar(BLANK_TEXT); + if (bot == maxy && clr_eos) { + GoTo(NCURSES_SP_ARGx bot - n + 1, 0); + ClrToEOS(NCURSES_SP_ARGx blank2); + } else { + for (i = 0; i < n; i++) { + GoTo(NCURSES_SP_ARGx bot - i, 0); + ClrToEOL(NCURSES_SP_ARGx blank2, FALSE); + } + } + } + + } else { /* (n < 0) - scroll down (backward) */ + res = scroll_csr_backward(NCURSES_SP_ARGx -n, top, bot, 0, maxy, blank); + + if (res == ERR && change_scroll_region) { + if (top != 0 + && (SP_PARM->_cursrow == top || + SP_PARM->_cursrow == top - 1) + && save_cursor && restore_cursor) { + cursor_saved = TRUE; + TPUTS_TRACE("save_cursor"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx save_cursor); + } + TPUTS_TRACE("change_scroll_region"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx + TPARM_2(change_scroll_region, top, bot)); + if (cursor_saved) { + TPUTS_TRACE("restore_cursor"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx restore_cursor); + } else { + SP_PARM->_cursrow = SP_PARM->_curscol = -1; + } + + res = scroll_csr_backward(NCURSES_SP_ARGx + -n, top, bot, top, bot, blank); + + TPUTS_TRACE("change_scroll_region"); + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx + TPARM_2(change_scroll_region, 0, maxy)); + SP_PARM->_cursrow = SP_PARM->_curscol = -1; + } + + if (res == ERR && SP_PARM->_nc_sp_idlok) + res = scroll_idl(NCURSES_SP_ARGx -n, bot + n + 1, top, blank); + + /* + * Clear the newly shifted-in text. + */ + if (res != ERR + && (non_dest_scroll_region || (memory_above && top == 0))) { + static const NCURSES_CH_T blank2 = NewChar(BLANK_TEXT); + for (i = 0; i < -n; i++) { + GoTo(NCURSES_SP_ARGx i + top, 0); + ClrToEOL(NCURSES_SP_ARGx blank2, FALSE); + } + } + } + + if (res == ERR) + return (ERR); + + _nc_scroll_window(CurScreen(SP_PARM), n, + (NCURSES_SIZE_T) top, + (NCURSES_SIZE_T) bot, + blank); + + /* shift hash values too - they can be reused */ + NCURSES_SP_NAME(_nc_scroll_oldhash) (NCURSES_SP_ARGx n, top, bot); + + return (OK); +} + +#if NCURSES_SP_FUNCS +NCURSES_EXPORT(int) +_nc_scrolln(int n, int top, int bot, int maxy) +{ + return NCURSES_SP_NAME(_nc_scrolln) (CURRENT_SCREEN, n, top, bot, maxy); +} +#endif + +NCURSES_EXPORT(void) +NCURSES_SP_NAME(_nc_screen_resume) (NCURSES_SP_DCL0) +{ + assert(SP_PARM); + + /* make sure terminal is in a sane known state */ + SetAttr(SCREEN_ATTRS(SP_PARM), A_NORMAL); + NewScreen(SP_PARM)->_clear = TRUE; + + /* reset color pairs and definitions */ + if (SP_PARM->_coloron || SP_PARM->_color_defs) + NCURSES_SP_NAME(_nc_reset_colors) (NCURSES_SP_ARG); + + /* restore user-defined colors, if any */ + if (SP_PARM->_color_defs < 0) { + int n; + SP_PARM->_color_defs = -(SP_PARM->_color_defs); + for (n = 0; n < SP_PARM->_color_defs; ++n) { + if (SP_PARM->_color_table[n].init) { + NCURSES_SP_NAME(init_color) (NCURSES_SP_ARGx + (short) n, + SP_PARM->_color_table[n].r, + SP_PARM->_color_table[n].g, + SP_PARM->_color_table[n].b); + } + } + } + + if (exit_attribute_mode) + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx exit_attribute_mode); + else { + /* turn off attributes */ + if (exit_alt_charset_mode) + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx exit_alt_charset_mode); + if (exit_standout_mode) + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx exit_standout_mode); + if (exit_underline_mode) + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx exit_underline_mode); + } + if (exit_insert_mode) + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx exit_insert_mode); + if (enter_am_mode && exit_am_mode) + NCURSES_SP_NAME(putp) (NCURSES_SP_ARGx + (auto_right_margin + ? enter_am_mode + : exit_am_mode)); +} + +#if NCURSES_SP_FUNCS +NCURSES_EXPORT(void) +_nc_screen_resume(void) +{ + NCURSES_SP_NAME(_nc_screen_resume) (CURRENT_SCREEN); +} +#endif + +NCURSES_EXPORT(void) +NCURSES_SP_NAME(_nc_screen_init) (NCURSES_SP_DCL0) +{ + NCURSES_SP_NAME(_nc_screen_resume) (NCURSES_SP_ARG); +} + +#if NCURSES_SP_FUNCS +NCURSES_EXPORT(void) +_nc_screen_init(void) +{ + NCURSES_SP_NAME(_nc_screen_init) (CURRENT_SCREEN); +} +#endif + +/* wrap up screen handling */ +NCURSES_EXPORT(void) +NCURSES_SP_NAME(_nc_screen_wrap) (NCURSES_SP_DCL0) +{ + if (SP_PARM == 0) + return; + + UpdateAttrs(SP_PARM, normal); +#if NCURSES_EXT_FUNCS + if (SP_PARM->_coloron + && !SP_PARM->_default_color) { + static const NCURSES_CH_T blank = NewChar(BLANK_TEXT); + SP_PARM->_default_color = TRUE; + NCURSES_SP_NAME(_nc_do_color) (NCURSES_SP_ARGx + -1, + 0, + FALSE, + NCURSES_SP_NAME(_nc_outch)); + SP_PARM->_default_color = FALSE; + + TINFO_MVCUR(NCURSES_SP_ARGx + SP_PARM->_cursrow, + SP_PARM->_curscol, + screen_lines(SP_PARM) - 1, + 0); + + ClrToEOL(NCURSES_SP_ARGx blank, TRUE); + } +#endif + if (SP_PARM->_color_defs) { + NCURSES_SP_NAME(_nc_reset_colors) (NCURSES_SP_ARG); + } +} + +#if NCURSES_SP_FUNCS +NCURSES_EXPORT(void) +_nc_screen_wrap(void) +{ + NCURSES_SP_NAME(_nc_screen_wrap) (CURRENT_SCREEN); +} +#endif + +#if USE_XMC_SUPPORT +NCURSES_EXPORT(void) +NCURSES_SP_NAME(_nc_do_xmc_glitch) (NCURSES_SP_DCLx attr_t previous) +{ + if (SP_PARM != 0) { + attr_t chg = XMC_CHANGES(previous ^ AttrOf(SCREEN_ATTRS(SP_PARM))); + + while (chg != 0) { + if (chg & 1) { + SP_PARM->_curscol += magic_cookie_glitch; + if (SP_PARM->_curscol >= SP_PARM->_columns) + wrap_cursor(NCURSES_SP_ARG); + TR(TRACE_UPDATE, ("bumped to %d,%d after cookie", + SP_PARM->_cursrow, SP_PARM->_curscol)); + } + chg >>= 1; + } + } +} + +#if NCURSES_SP_FUNCS +NCURSES_EXPORT(void) +_nc_do_xmc_glitch(attr_t previous) +{ + NCURSES_SP_NAME(_nc_do_xmc_glitch) (CURRENT_SCREEN, previous); +} +#endif + +#endif /* USE_XMC_SUPPORT */ |