ncurses/lib_bkgd.c

   1
   2 /***************************************************************************
   3 *                            COPYRIGHT NOTICE                              *
   4 ****************************************************************************
   5 *                ncurses is copyright (C) 1992-1995                        *
   6 *                          Zeyd M. Ben-Halim                               *
   7 *                          zmbenhal@netcom.com                             *
   8 *                          Eric S. Raymond                                 *
   9 *                          esr@snark.thyrsus.com                           *
  10 *                                                                          *
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  20 ***************************************************************************/
  21
  22 #include <curses.priv.h>
  23
  24 MODULE_ID("$Id: lib_bkgd.c,v 1.7 1997/04/12 17:44:37 tom Exp $")
  25
  26 int wbkgd(WINDOW *win, const chtype ch)
  27 {
  28 int x, y;
  29 chtype old_bkgd = getbkgd(win);
  30 chtype new_bkgd = ch;
  31
  32         T((T_CALLED("wbkgd(%p,%s)"), win, _tracechtype(new_bkgd)));
  33
  34         if (TextOf(new_bkgd) == 0)
  35                 new_bkgd |= BLANK;
  36         wbkgdset(win, new_bkgd);
  37         wattrset(win, AttrOf(new_bkgd));
  38
  39         for (y = 0; y <= win->_maxy; y++) {
  40                 for (x = 0; x <= win->_maxx; x++) {
  41                         if (win->_line[y].text[x] == old_bkgd)
  42                                 win->_line[y].text[x] = new_bkgd;
  43                         else
  44                                 win->_line[y].text[x] =
  45                                         TextOf(win->_line[y].text[x])
  46                                         | AttrOf(new_bkgd);
  47                 }
  48         }
  49         touchwin(win);
  50         _nc_synchook(win);
  51         returnCode(OK);
  52 }