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29 /****************************************************************************
30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
31 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
32 ****************************************************************************/
37 ** The routine mvwin().
41 #include <curses.priv.h>
43 MODULE_ID("$Id: lib_mvwin.c,v 1.14 2006/02/25 22:53:46 tom Exp $")
46 mvwin(WINDOW *win, int by, int bx)
48 T((T_CALLED("mvwin(%p,%d,%d)"), win, by, bx));
50 if (!win || (win->_flags & _ISPAD))
54 * mvwin() should only modify the indices. See test/demo_menus.c and
55 * test/movewindow.c for examples.
58 /* Copying subwindows is allowed, but it is expensive... */
59 if (win->_flags & _SUBWIN) {
61 WINDOW *parent = win->_parent;
62 if (parent) { /* Now comes the complicated and costly part, you should really
63 * try to avoid to move subwindows. Because a subwindow shares
64 * the text buffers with its parent, one can't do a simple
65 * memmove of the text buffers. One has to create a copy, then
66 * to relocate the subwindow and then to do a copy.
68 if ((by - parent->_begy == win->_pary) &&
69 (bx - parent->_begx == win->_parx))
70 err = OK; /* we don't actually move */
72 WINDOW *clone = dupwin(win);
74 /* now we have the clone, so relocate win */
76 werase(win); /* Erase the original place */
77 /* fill with parents background */
78 wbkgrnd(win, CHREF(parent->_nc_bkgd));
79 wsyncup(win); /* Tell the parent(s) */
85 err = copywin(clone, win,
86 0, 0, 0, 0, win->_maxy, win->_maxx, 0);
90 if (ERR == delwin(clone))
99 if (by + win->_maxy > screen_lines - 1
100 || bx + win->_maxx > screen_columns - 1
106 * Whether or not the window is moved, touch the window's contents so
107 * that a following call to 'wrefresh()' will paint the window at the
108 * new location. This ensures that if the caller has refreshed another
109 * window at the same location, that this one will be displayed.
113 returnCode(touchwin(win));