release/src/router/libncurses/ncurses/base/lib_clrbot.c

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  28
  29 /****************************************************************************
  30  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
  31  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
  32  ****************************************************************************/
  33
  34 /*
  35 **      lib_clrbot.c
  36 **
  37 **      The routine wclrtobot().
  38 **
  39 */
  40
  41 #include <curses.priv.h>
  42
  43 MODULE_ID("$Id: lib_clrbot.c,v 1.21 2009/10/24 22:33:19 tom Exp $")
  44
  45 NCURSES_EXPORT(int)
  46 wclrtobot(WINDOW *win)
  47 {
  48     int code = ERR;
  49
  50     T((T_CALLED("wclrtobot(%p)"), (void *) win));
  51
  52     if (win) {
  53         NCURSES_SIZE_T y;
  54         NCURSES_SIZE_T startx = win->_curx;
  55         NCURSES_CH_T blank = win->_nc_bkgd;
  56
  57         T(("clearing from y = %ld to y = %ld with maxx =  %ld",
  58            (long) win->_cury, (long) win->_maxy, (long) win->_maxx));
  59
  60         for (y = win->_cury; y <= win->_maxy; y++) {
  61             struct ldat *line = &(win->_line[y]);
  62             NCURSES_CH_T *ptr = &(line->text[startx]);
  63             NCURSES_CH_T *end = &(line->text[win->_maxx]);
  64
  65             CHANGED_TO_EOL(line, startx, win->_maxx);
  66
  67             while (ptr <= end)
  68                 *ptr++ = blank;
  69
  70             startx = 0;
  71         }
  72         _nc_synchook(win);
  73         code = OK;
  74     }
  75     returnCode(code);
  76 }