60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
/* Copyright (c) 1984 AT&T */
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/* All Rights Reserved */
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/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */
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/* The copyright notice above does not evidence any */
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/* actual or intended publication of such source code. */
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#ifndef lint
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static char sccsid[] = "@(#)erase.c 1.1 94/10/31 SMI"; /* from S5R3 1.3 */
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#endif
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# include "curses.ext"
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/*
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* This routine erases everything on the _window.
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*
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*/
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werase(win)
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register WINDOW *win;
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{
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register int y;
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register chtype *sp, *end, *start, *maxx;
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register int minx;
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# ifdef DEBUG
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if(outf) fprintf(outf, "WERASE(%0.2o), _maxx %d\n", win, win->_maxx);
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# endif
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for (y = 0; y < win->_maxy; y++) {
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minx = _NOCHANGE;
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maxx = NULL;
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start = win->_y[y];
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end = &start[win->_maxx];
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for (sp = start; sp < end; sp++) {
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#ifdef DEBUG
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if (y == 23) if(outf) fprintf(outf,
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"sp %x, *sp %c %o\n", sp, *sp, *sp);
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#endif
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if (*sp != ' ') {
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maxx = sp;
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if (minx == _NOCHANGE)
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minx = sp - start;
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*sp = ' ';
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}
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}
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if (minx != _NOCHANGE) {
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if (win->_firstch[y] > minx
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|| win->_firstch[y] == _NOCHANGE)
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win->_firstch[y] = minx;
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if (win->_lastch[y] < maxx - win->_y[y])
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win->_lastch[y] = maxx - win->_y[y];
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}
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# ifdef DEBUG
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if(outf) fprintf(outf, "WERASE: minx %d maxx %d _firstch[%d] %d, start %x, end %x\n",
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minx, maxx ? maxx-start : NULL, y, win->_firstch[y], start, end);
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# endif
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}
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win->_curx = win->_cury = 0;
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win->_flags |= _WINCHANGED;
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}
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