lib/curses/wclrtobot.c

   1 #include <curses.h>
   2 #include "curspriv.h"
   3
   4 /****************************************************************/
   5 /* Wclrtobot() fills the right half of the cursor line of       */
   6 /* Window 'win', and all lines below it with blanks.            */
   7 /****************************************************************/
   8
   9 int wclrtobot(win)
  10 WINDOW *win;
  11 {
  12   int y, minx, startx, *ptr, *end, *maxx, blank;
  13
  14   blank = ' ' | (win->_attrs & ATR_MSK);
  15   startx = win->_curx;
  16   for (y = win->_cury; y <= win->_regbottom; y++) {
  17         minx = _NO_CHANGE;
  18         end = &win->_line[y][win->_maxx];
  19         for (ptr = &win->_line[y][startx]; ptr <= end; ptr++) {
  20                 if (*ptr != blank) {
  21                         maxx = ptr;
  22                         if (minx == _NO_CHANGE) minx = ptr - win->_line[y];
  23                         *ptr = blank;
  24                 }               /* if */
  25         }                       /* for */
  26         if (minx != _NO_CHANGE) {
  27                 if ((win->_minchng[y] > minx) || (win->_minchng[y] == _NO_CHANGE))
  28                         win->_minchng[y] = minx;
  29                 if (win->_maxchng[y] < maxx - win->_line[y])
  30                         win->_maxchng[y] = maxx - win->_line[y];
  31         }                       /* if */
  32         startx = 0;
  33   }
  34   return(OK);
  35 }