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Annotation of 43BSDTahoe/usr.lib/libcurses/id_subwins.c, revision 1.1.1.1

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 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[] = "@(#)id_subwins.c       5.3 (Berkeley) 6/30/88";
                     20: #endif /* not lint */
                     21: 
                     22: # include      "curses.ext"
                     23: 
                     24: /*
                     25:  * _id_subwins:
                     26:  *     Re-sync the pointers to _y for all the subwindows.
                     27:  *
                     28:  */
                     29: _id_subwins(orig)
                     30: register WINDOW        *orig;
                     31: {
                     32:        register WINDOW *win;
                     33:        register int    realy;
                     34:        register int    y, oy, x;
                     35: 
                     36:        realy = orig->_begy + orig->_cury;
                     37:        for (win = orig->_nextp; win != orig; win = win->_nextp) {
                     38:                /*
                     39:                 * If the window ends before our current position,
                     40:                 * don't need to do anything.
                     41:                 */
                     42:                if (win->_begy + win->_maxy <= realy)
                     43:                        continue;
                     44: 
                     45:                oy = orig->_cury;
                     46:                for (y = realy - win->_begy; y < win->_maxy; y++, oy++)
                     47:                        win->_y[y] = &orig->_y[oy][win->_ch_off];
                     48:        }
                     49: }

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