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/****************************************************************************
* 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. *
****************************************************************************/
/****************************************************************************
* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
****************************************************************************/
/*
** lib_mvwin.c
**
** The routine mvwin().
**
*/
#include <curses.priv.h>
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 || (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
|| bx < 0)
returnCode(ERR);
/*
* Whether or not the window is moved, touch the window's contents so
* 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));
}
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