Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
NetBSD/lib/libcurses/refresh.c

329 lines
7.9 KiB
C
Raw Blame History

/*
* Copyright (c) 1981 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
/*static char sccsid[] = "from: @(#)refresh.c 5.8 (Berkeley) 8/31/92";*/
static char rcsid[] = "$Id: refresh.c,v 1.4 1993/08/07 05:49:04 mycroft Exp $";
#endif /* not lint */
#include <curses.h>
#include <string.h>
static int curwin;
static short ly, lx;
WINDOW *_win;
static void domvcur __P((int, int, int, int));
static int makech __P((WINDOW *, int));
/*
* wrefresh --
* Make the current screen look like "win" over the area coverd by
* win.
*/
int
wrefresh(win)
register WINDOW *win;
{
register int retval;
register short wy;
/* Make sure were in visual state. */
if (__endwin) {
tputs(VS, 0, __cputchar);
tputs(TI, 0, __cputchar);
__endwin = 0;
}
/* Initialize loop parameters. */
ly = curscr->_cury;
lx = curscr->_curx;
wy = 0;
_win = win;
curwin = (win == curscr);
if (win->_clear || curscr->_clear || curwin) {
if ((win->_flags & _FULLWIN) || curscr->_clear) {
tputs(CL, 0, __cputchar);
ly = 0;
lx = 0;
if (!curwin) {
curscr->_clear = 0;
curscr->_cury = 0;
curscr->_curx = 0;
werase(curscr);
}
touchwin(win);
}
win->_clear = 0;
}
if (!CA) {
if (win->_curx != 0)
putchar('\n');
if (!curwin)
werase(curscr);
}
#ifdef DEBUG
__TRACE("wrefresh: (%0.2o): curwin = %d\n", win, curwin);
__TRACE("wrefresh: \tfirstch\tlastch\n");
#endif
for (wy = 0; wy < win->_maxy; wy++) {
#ifdef DEBUG
__TRACE("%d\t%d\t%d\n",
wy, win->_firstch[wy], win->_lastch[wy]);
#endif
if (win->_firstch[wy] != _NOCHANGE)
if (makech(win, wy) == ERR)
return (ERR);
else {
if (win->_firstch[wy] >= win->_ch_off)
win->_firstch[wy] = win->_maxx +
win->_ch_off;
if (win->_lastch[wy] < win->_maxx +
win->_ch_off)
win->_lastch[wy] = win->_ch_off;
if (win->_lastch[wy] < win->_firstch[wy])
win->_firstch[wy] = _NOCHANGE;
}
#ifdef DEBUG
__TRACE("\t%d\t%d\n", win->_firstch[wy], win->_lastch[wy]);
#endif
}
if (win == curscr)
domvcur(ly, lx, win->_cury, win->_curx);
else {
if (win->_leave) {
curscr->_cury = ly;
curscr->_curx = lx;
ly -= win->_begy;
lx -= win->_begx;
if (ly >= 0 && ly < win->_maxy && lx >= 0 &&
lx < win->_maxx) {
win->_cury = ly;
win->_curx = lx;
} else
win->_cury = win->_curx = 0;
} else {
domvcur(ly, lx, win->_cury + win->_begy,
win->_curx + win->_begx);
curscr->_cury = win->_cury + win->_begy;
curscr->_curx = win->_curx + win->_begx;
}
}
retval = OK;
_win = NULL;
(void)fflush(stdout);
return (retval);
}
/*
* makech --
* Make a change on the screen.
*/
static int
makech(win, wy)
register WINDOW *win;
int wy;
{
register int nlsp, clsp; /* Last space in lines. */
register short wx, lch, y;
register char *nsp, *csp, *ce;
wx = win->_firstch[wy] - win->_ch_off;
if (wx >= win->_maxx)
return (OK);
else if (wx < 0)
wx = 0;
lch = win->_lastch[wy] - win->_ch_off;
if (lch < 0)
return (OK);
else if (lch >= win->_maxx)
lch = win->_maxx - 1;;
y = wy + win->_begy;
if (curwin)
csp = " ";
else
csp = &curscr->_y[wy + win->_begy][wx + win->_begx];
nsp = &win->_y[wy][wx];
if (CE && !curwin) {
for (ce = &win->_y[wy][win->_maxx - 1]; *ce == ' '; ce--)
if (ce <= win->_y[wy])
break;
nlsp = ce - win->_y[wy];
}
if (!curwin)
ce = CE;
else
ce = NULL;
while (wx <= lch) {
if (*nsp == *csp) {
if (wx <= lch) {
while (*nsp == *csp && wx <= lch) {
nsp++;
if (!curwin)
csp++;
++wx;
}
continue;
}
break;
}
domvcur(ly, lx, y, wx + win->_begx);
#ifdef DEBUG
__TRACE("makech: 1: wx = %d, lx = %d, newy = %d, newx = %d\n",
wx, lx, y, wx + win->_begx);
#endif
ly = y;
lx = wx + win->_begx;
while (*nsp != *csp && wx <= lch) {
if (ce != NULL && wx >= nlsp && *nsp == ' ') {
/* Check for clear to end-of-line. */
ce = &curscr->_y[ly][COLS - 1];
while (*ce == ' ')
if (ce-- <= csp)
break;
clsp = ce - curscr->_y[ly] - win->_begx;
#ifdef DEBUG
__TRACE("makech: clsp = %d, nlsp = %d\n", clsp, nlsp);
#endif
if (clsp - nlsp >= strlen(CE) &&
clsp < win->_maxx) {
#ifdef DEBUG
__TRACE("makech: using CE\n");
#endif
tputs(CE, 0, __cputchar);
lx = wx + win->_begx;
while (wx++ <= clsp)
*csp++ = ' ';
return (OK);
}
ce = NULL;
}
/* Enter/exit standout mode as appropriate. */
if (SO && (*nsp & _STANDOUT) !=
(curscr->_flags & _STANDOUT)) {
if (*nsp & _STANDOUT) {
tputs(SO, 0, __cputchar);
curscr->_flags |= _STANDOUT;
} else {
tputs(SE, 0, __cputchar);
curscr->_flags &= ~_STANDOUT;
}
}
wx++;
if (wx >= win->_maxx && wy == win->_maxy - 1)
if (win->_scroll) {
if (curscr->_flags & _STANDOUT
&& win->_flags & _ENDLINE)
if (!MS) {
tputs(SE, 0,
__cputchar);
curscr->_flags &=
~_STANDOUT;
}
if (!curwin)
putchar((*csp = *nsp) & 0177);
else
putchar(*nsp & 0177);
if (win->_flags & _FULLWIN && !curwin)
scroll(curscr);
ly = win->_begy + win->_cury;
lx = win->_begx + win->_curx;
return (OK);
} else
if (win->_flags & _SCROLLWIN) {
lx = --wx;
return (ERR);
}
if (!curwin)
putchar((*csp++ = *nsp) & 0177);
else
putchar(*nsp & 0177);
#ifdef DEBUG
__TRACE("makech: putchar(%c)\n", *nsp & 0177);
#endif
if (UC && (*nsp & _STANDOUT)) {
putchar('\b');
tputs(UC, 0, __cputchar);
}
nsp++;
}
#ifdef DEBUG
__TRACE("makech: 2: wx = %d, lx = %d\n", wx, lx);
#endif
if (lx == wx + win->_begx) /* If no change. */
break;
lx = wx + win->_begx;
if (lx >= COLS && AM) {
lx = 0;
ly++;
/*
* xn glitch: chomps a newline after auto-wrap.
* we just feed it now and forget about it.
*/
if (XN) {
putchar('\n');
putchar('\r');
}
}
#ifdef DEBUG
__TRACE("makech: 3: wx = %d, lx = %d\n", wx, lx);
#endif
}
return (OK);
}
/*
* domvcur --
* Do a mvcur, leaving standout mode if necessary.
*/
static void
domvcur(oy, ox, ny, nx)
int oy, ox, ny, nx;
{
if (curscr->_flags & _STANDOUT && !MS) {
tputs(SE, 0, __cputchar);
curscr->_flags &= ~_STANDOUT;
}
mvcur(oy, ox, ny, nx);
}
Reference in New Issue View Git Blame Copy Permalink