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Annotation of 43BSDReno/lib/libcurses/id_subwins.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1981 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: (1) source distributions retain this entire copyright
        !             7:  * notice and comment, and (2) distributions including binaries display
        !             8:  * the following acknowledgement:  ``This product includes software
        !             9:  * developed by the University of California, Berkeley and its contributors''
        !            10:  * in the documentation or other materials provided with the distribution
        !            11:  * and in all advertising materials mentioning features or use of this
        !            12:  * software. Neither the name of the University nor the names of its
        !            13:  * contributors may be used to endorse or promote products derived
        !            14:  * from this software without specific prior written permission.
        !            15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            18:  */
        !            19: 
        !            20: #ifndef lint
        !            21: static char sccsid[] = "@(#)id_subwins.c       5.4 (Berkeley) 6/1/90";
        !            22: #endif /* not lint */
        !            23: 
        !            24: # include      "curses.ext"
        !            25: 
        !            26: /*
        !            27:  * _id_subwins:
        !            28:  *     Re-sync the pointers to _y for all the subwindows.
        !            29:  *
        !            30:  */
        !            31: _id_subwins(orig)
        !            32: register WINDOW        *orig;
        !            33: {
        !            34:        register WINDOW *win;
        !            35:        register int    realy;
        !            36:        register int    y, oy, x;
        !            37: 
        !            38:        realy = orig->_begy + orig->_cury;
        !            39:        for (win = orig->_nextp; win != orig; win = win->_nextp) {
        !            40:                /*
        !            41:                 * If the window ends before our current position,
        !            42:                 * don't need to do anything.
        !            43:                 */
        !            44:                if (win->_begy + win->_maxy <= realy)
        !            45:                        continue;
        !            46: 
        !            47:                oy = orig->_cury;
        !            48:                for (y = realy - win->_begy; y < win->_maxy; y++, oy++)
        !            49:                        win->_y[y] = &orig->_y[oy][win->_ch_off];
        !            50:        }
        !            51: }

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