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Annotation of 43BSDTahoe/ucb/window/wwredrawwin.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1983 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that the above copyright notice and this paragraph are
        !             7:  * duplicated in all such forms and that any documentation,
        !             8:  * advertising materials, and other materials related to such
        !             9:  * distribution and use acknowledge that the software was developed
        !            10:  * by the University of California, Berkeley.  The name of the
        !            11:  * University may not be used to endorse or promote products derived
        !            12:  * from this software without specific prior written permission.
        !            13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            16:  */
        !            17: 
        !            18: #ifndef lint
        !            19: static char sccsid[] = "@(#)wwredrawwin.c      3.13 (Berkeley) 6/29/88";
        !            20: #endif /* not lint */
        !            21: 
        !            22: #include "ww.h"
        !            23: 
        !            24: wwredrawwin1(w, row1, row2, offset)
        !            25: register struct ww *w;
        !            26: int row1, row2, offset;
        !            27: {
        !            28:        int row;
        !            29:        register col;
        !            30:        register char *smap;
        !            31:        register union ww_char *buf;
        !            32:        register char *win;
        !            33:        register union ww_char *ns;
        !            34:        int x;
        !            35:        int nchanged;
        !            36: 
        !            37:        for (row = row1; row < row2; row++) {
        !            38:                col = w->ww_i.l;
        !            39:                ns = wwns[row];
        !            40:                smap = &wwsmap[row][col];
        !            41:                buf = w->ww_buf[row + offset];
        !            42:                win = w->ww_win[row];
        !            43:                nchanged = 0;
        !            44:                for (; col < w->ww_i.r; col++)
        !            45:                        if (*smap++ == w->ww_index &&
        !            46:                            ns[col].c_w !=
        !            47:                            (x = buf[col].c_w ^ win[col] << WWC_MSHIFT)) {
        !            48:                                nchanged++;
        !            49:                                ns[col].c_w = x;
        !            50:                        }
        !            51:                if (nchanged > 4)
        !            52:                        wwtouched[row] |= WWU_MAJOR|WWU_TOUCHED;
        !            53:                else if (nchanged > 0)
        !            54:                        wwtouched[row] |= WWU_TOUCHED;
        !            55:        }
        !            56: }

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