diff options
Diffstat (limited to 'contrib/ncurses/ncurses/base/lib_mvwin.c')
| -rw-r--r-- | contrib/ncurses/ncurses/base/lib_mvwin.c | 112 |
1 files changed, 55 insertions, 57 deletions
diff --git a/contrib/ncurses/ncurses/base/lib_mvwin.c b/contrib/ncurses/ncurses/base/lib_mvwin.c index 9774d9f..28b78f8 100644 --- a/contrib/ncurses/ncurses/base/lib_mvwin.c +++ b/contrib/ncurses/ncurses/base/lib_mvwin.c @@ -1,5 +1,5 @@ /**************************************************************************** - * Copyright (c) 1998 Free Software Foundation, Inc. * + * Copyright (c) 1998,2000 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 * @@ -31,8 +31,6 @@ * and: Eric S. Raymond <esr@snark.thyrsus.com> * ****************************************************************************/ - - /* ** lib_mvwin.c ** @@ -42,68 +40,68 @@ #include <curses.priv.h> -MODULE_ID("$Id: lib_mvwin.c,v 1.7 1998/02/11 12:13:55 tom Exp $") +MODULE_ID("$Id: lib_mvwin.c,v 1.9 2000/12/10 02:43:27 tom Exp $") -int mvwin(WINDOW *win, int by, int bx) +NCURSES_EXPORT(int) +mvwin(WINDOW *win, int by, int bx) { - T((T_CALLED("mvwin(%p,%d,%d)"), win, by, bx)); + T((T_CALLED("mvwin(%p,%d,%d)"), win, by, bx)); - if (!win || (win->_flags & _ISPAD)) - returnCode(ERR); + 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); + /* 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; + /* 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); } + returnCode(err); + } - if (by + win->_maxy > screen_lines - 1 - || bx + win->_maxx > screen_columns - 1 - || by < 0 - || bx < 0) - 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)); + /* + * 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)); } |
