1994-10-07 08:58:58 +00:00
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/* This work is copyrighted. See COPYRIGHT.OLD & COPYRIGHT.NEW for *
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* details. If they are missing then this copy is in violation of *
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* the copyright conditions. */
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/*
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** lib_erase.c
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**
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** The routine werase().
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**
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*/
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#include "curses.priv.h"
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1994-12-02 06:40:24 +00:00
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#include "terminfo.h"
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1994-10-07 08:58:58 +00:00
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#define BLANK ' '
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int werase(WINDOW *win)
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{
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int y;
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chtype *sp, *end, *start, *maxx = NULL;
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int minx;
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T(("werase(%x) called", win));
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for (y = win->_regtop; y <= win->_regbottom; y++) {
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minx = _NOCHANGE;
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start = win->_line[y];
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end = &start[win->_maxx];
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1995-05-30 05:51:47 +00:00
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1994-10-07 08:58:58 +00:00
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maxx = start;
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for (sp = start; sp <= end; 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 = BLANK;
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}
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if (minx != _NOCHANGE) {
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if (win->_firstchar[y] > minx ||
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win->_firstchar[y] == _NOCHANGE)
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win->_firstchar[y] = minx;
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if (win->_lastchar[y] < maxx - win->_line[y])
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win->_lastchar[y] = maxx - win->_line[y];
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}
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}
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win->_curx = win->_cury = 0;
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return OK;
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}
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