diff options
Diffstat (limited to 'ncurses-5.3/ncurses/base/lib_mvwin.c')
| -rw-r--r-- | ncurses-5.3/ncurses/base/lib_mvwin.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/ncurses-5.3/ncurses/base/lib_mvwin.c b/ncurses-5.3/ncurses/base/lib_mvwin.c new file mode 100644 index 0000000..04c3f6c --- /dev/null +++ b/ncurses-5.3/ncurses/base/lib_mvwin.c @@ -0,0 +1,108 @@ +/**************************************************************************** + * Copyright (c) 1998,2000,2001 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("$Id$") + +NCURSES_EXPORT(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 */ + /* fill with parents background */ + wbkgrnd(win, CHREF(parent->_nc_bkgd)); + 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)); +} |