+/****************************************************************************
+ * Copyright (c) 1998 Free Software Foundation, Inc. *
+ * *
+ * Permission is hereby granted, free of charge, to any person obtaining a *
+ * copy of this software and associated documentation files (the *
+ * "Software"), to deal in the Software without restriction, including *
+ * without limitation the rights to use, copy, modify, merge, publish, *
+ * distribute, distribute with modifications, sublicense, and/or sell *
+ * copies of the Software, and to permit persons to whom the Software is *
+ * furnished to do so, subject to the following conditions: *
+ * *
+ * The above copyright notice and this permission notice shall be included *
+ * in all copies or substantial portions of the Software. *
+ * *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
+ * *
+ * Except as contained in this notice, the name(s) of the above copyright *
+ * holders shall not be used in advertising or otherwise to promote the *
+ * sale, use or other dealings in this Software without prior written *
+ * authorization. *
+ ****************************************************************************/
-/***************************************************************************
-* COPYRIGHT NOTICE *
-****************************************************************************
-* ncurses is copyright (C) 1992-1995 *
-* Zeyd M. Ben-Halim *
-* zmbenhal@netcom.com *
-* Eric S. Raymond *
-* esr@snark.thyrsus.com *
-* *
-* Permission is hereby granted to reproduce and distribute ncurses *
-* by any means and for any fee, whether alone or as part of a *
-* larger distribution, in source or in binary form, PROVIDED *
-* this notice is included with any such distribution, and is not *
-* removed from any of its header files. Mention of ncurses in any *
-* applications linked with it is highly appreciated. *
-* *
-* ncurses comes AS IS with no warranty, implied or expressed. *
-* *
-***************************************************************************/
+/****************************************************************************
+ * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
+ * and: Eric S. Raymond <esr@snark.thyrsus.com> *
+ ****************************************************************************/
#include <curses.priv.h>
-MODULE_ID("$Id: lib_mvwin.c,v 1.3 1997/02/02 00:20:41 tom Exp $")
+MODULE_ID("$Id: lib_mvwin.c,v 1.7 1998/02/11 12:13:55 tom Exp $")
int mvwin(WINDOW *win, int by, int bx)
{
T((T_CALLED("mvwin(%p,%d,%d)"), win, by, bx));
- if (win->_flags & _SUBWIN)
+ if (!win || (win->_flags & _ISPAD))
returnCode(ERR);
+ /* Copying subwindows is allowed, but it is expensive... */
+ if (win->_flags & _SUBWIN) {
+ int err = ERR;
+ WINDOW *parent = win->_parent;
+ if (parent)
+ { /* Now comes the complicated and costly part, you should really
+ * try to avoid to move subwindows. Because a subwindow shares
+ * the text buffers with its parent, one can't do a simple
+ * memmove of the text buffers. One has to create a copy, then
+ * to relocate the subwindow and then to do a copy.
+ */
+ if ((by - parent->_begy == win->_pary) &&
+ (bx - parent->_begx == win->_parx))
+ err=OK; /* we don't actually move */
+ else {
+ WINDOW* clone = dupwin(win);
+ if (clone) {
+ /* now we have the clone, so relocate win */
+
+ werase(win); /* Erase the original place */
+ wbkgd(win,parent->_bkgd);/* fill with parents background */
+ wsyncup(win); /* Tell the parent(s) */
+
+ err = mvderwin(win,
+ by - parent->_begy,
+ bx - parent->_begx);
+ if (err!=ERR) {
+ err = copywin(clone,win,
+ 0, 0, 0, 0, win->_maxy, win->_maxx, 0);
+ if (ERR!=err)
+ wsyncup(win);
+ }
+ if (ERR==delwin(clone))
+ err=ERR;
+ }
+ }
+ }
+ returnCode(err);
+ }
+
if (by + win->_maxy > screen_lines - 1
|| bx + win->_maxx > screen_columns - 1
|| by < 0
* that a following call to 'wrefresh()' will paint the window at the
* new location. This ensures that if the caller has refreshed another
* window at the same location, that this one will be displayed.
- */
+ */
win->_begy = by;
win->_begx = bx;
returnCode(touchwin(win));