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93 lines
3.5 KiB
C
93 lines
3.5 KiB
C
/****************************************************************************
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* Copyright (c) 1998,2000,2001 Free Software Foundation, Inc. *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, distribute with modifications, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included *
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* in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************/
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/****************************************************************************
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* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
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* and: Eric S. Raymond <esr@snark.thyrsus.com> *
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* and: Thomas E. Dickey 1996-on *
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****************************************************************************/
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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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MODULE_ID("$Id: lib_erase.c,v 1.16 2005/10/30 00:36:36 tom Exp $")
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NCURSES_EXPORT(int)
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werase(WINDOW *win)
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{
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int code = ERR;
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int y;
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NCURSES_CH_T blank;
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NCURSES_CH_T *sp, *end, *start;
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T((T_CALLED("werase(%p)"), win));
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if (win) {
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blank = win->_nc_bkgd;
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for (y = 0; y <= win->_maxy; y++) {
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start = win->_line[y].text;
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end = &start[win->_maxx];
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/*
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* If this is a derived window, we have to handle the case where
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* a multicolumn character extends into the window that we are
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* erasing.
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*/
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if_WIDEC({
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if (isWidecExt(start[0])) {
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int x = (win->_parent != 0) ? (win->_begx) : 0;
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while (x-- > 0) {
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if (isWidecBase(start[-1])) {
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--start;
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break;
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}
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--start;
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}
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}
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});
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for (sp = start; sp <= end; sp++)
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*sp = blank;
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win->_line[y].firstchar = 0;
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win->_line[y].lastchar = win->_maxx;
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}
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win->_curx = win->_cury = 0;
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win->_flags &= ~_WRAPPED;
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_nc_synchook(win);
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code = OK;
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}
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returnCode(code);
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}
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