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Annotation of 43BSDReno/usr.bin/window/wwredrawwin.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1983 Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * This code is derived from software contributed to Berkeley by
                      6:  * Edward Wang at The University of California, Berkeley.
                      7:  *
                      8:  * Redistribution and use in source and binary forms are permitted provided
                      9:  * that: (1) source distributions retain this entire copyright notice and
                     10:  * comment, and (2) distributions including binaries display the following
                     11:  * acknowledgement:  ``This product includes software developed by the
                     12:  * University of California, Berkeley and its contributors'' in the
                     13:  * documentation or other materials provided with the distribution and in
                     14:  * all advertising materials mentioning features or use of this software.
                     15:  * Neither the name of the University nor the names of its contributors may
                     16:  * be used to endorse or promote products derived from this software without
                     17:  * specific prior written permission.
                     18:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     19:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     20:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     21:  */
                     22: 
                     23: #ifndef lint
                     24: static char sccsid[] = "@(#)wwredrawwin.c      3.16 (Berkeley) 6/6/90";
                     25: #endif /* not lint */
                     26: 
                     27: #include "ww.h"
                     28: 
                     29: wwredrawwin1(w, row1, row2, offset)
                     30: register struct ww *w;
                     31: int row1, row2, offset;
                     32: {
                     33:        int row;
                     34:        register col;
                     35:        register char *smap;
                     36:        register union ww_char *buf;
                     37:        register char *win;
                     38:        register union ww_char *ns;
                     39:        int x;
                     40:        int nchanged;
                     41: 
                     42:        for (row = row1; row < row2; row++) {
                     43:                col = w->ww_i.l;
                     44:                ns = wwns[row];
                     45:                smap = &wwsmap[row][col];
                     46:                buf = w->ww_buf[row + offset];
                     47:                win = w->ww_win[row];
                     48:                nchanged = 0;
                     49:                for (; col < w->ww_i.r; col++)
                     50:                        if (*smap++ == w->ww_index &&
                     51:                            ns[col].c_w !=
                     52:                            (x = buf[col].c_w ^ win[col] << WWC_MSHIFT)) {
                     53:                                nchanged++;
                     54:                                ns[col].c_w = x;
                     55:                        }
                     56:                if (nchanged > 0)
                     57:                        wwtouched[row] |= WWU_TOUCHED;
                     58:        }
                     59: }

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