New cover scheme

[unix-history] / usr / src / usr.bin / window / wwunframe.c

#ifndef lint
static  char *sccsid = "@(#)wwunframe.c 3.9 83/11/23";
#endif

#include "ww.h"

wwunframe(w)
register struct ww *w;
{
       register i, j;
       register char *win;
       register char *fmap;
       register struct ww *wp;

       for (i = w->ww_i.t; i < w->ww_i.b; i++) {
               j = w->ww_i.l;
               win = &w->ww_win[i][j];
               if (w->ww_fmap)
                       fmap = &w->ww_fmap[i][j];
               for (; j < w->ww_i.r; j++) {
                       if (*win & WWM_GLS) {
                               win++;
                               fmap++;
                               continue;
                       }
                       *win++ |= WWM_GLS;
                       if (w->ww_fmap)
                               *fmap++ = 0;
                       if (wwsmap[i][j] == w->ww_index) {
                               wwsmap[i][j] = WWX_NOBODY;
                               wwns[i][j].c_w = ' ';
                               wwtouched[i] = 1;
                       }
               }
               w->ww_nvis[i] = 0;
       }
       for (wp = w->ww_forw; wp != &wwhead; wp = wp->ww_forw) {
               int i1, i2, j1, j2;

               i1 = MAX(w->ww_i.t, wp->ww_i.t);
               i2 = MIN(w->ww_i.b, wp->ww_i.b);
               j1 = MAX(w->ww_i.l, wp->ww_i.l);
               j2 = MIN(w->ww_i.r, wp->ww_i.r);
               for (i = i1; i < i2; i++) {
                       for (j = j1; j < j2; j++) {
                               if (wwsmap[i][j] != WWX_NOBODY)
                                       continue;
                               if ((wp->ww_win[i][j] & WWM_GLS) == 0) {
                                       wwsmap[i][j] = wp->ww_index;
                                       wwns[i][j].c_w = wp->ww_buf[i][j].c_w ^
                                               wp->ww_win[i][j] << WWC_MSHIFT;
                                       wwtouched[i] = 1;
                                       if (wp->ww_win[i][j] == 0)
                                               wp->ww_nvis[i]++;
                               }
                       }
               }
       }
}