1 /* $OpenBSD: lib_mvwin.c,v 1.3 2010/01/12 23:22:06 nicm Exp $ */ 2 3 /**************************************************************************** 4 * Copyright (c) 1998-2001,2006 Free Software Foundation, Inc. * 5 * * 6 * Permission is hereby granted, free of charge, to any person obtaining a * 7 * copy of this software and associated documentation files (the * 8 * "Software"), to deal in the Software without restriction, including * 9 * without limitation the rights to use, copy, modify, merge, publish, * 10 * distribute, distribute with modifications, sublicense, and/or sell * 11 * copies of the Software, and to permit persons to whom the Software is * 12 * furnished to do so, subject to the following conditions: * 13 * * 14 * The above copyright notice and this permission notice shall be included * 15 * in all copies or substantial portions of the Software. * 16 * * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 20 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 23 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 24 * * 25 * Except as contained in this notice, the name(s) of the above copyright * 26 * holders shall not be used in advertising or otherwise to promote the * 27 * sale, use or other dealings in this Software without prior written * 28 * authorization. * 29 ****************************************************************************/ 30 31 /**************************************************************************** 32 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * 33 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 34 ****************************************************************************/ 35 36 /* 37 ** lib_mvwin.c 38 ** 39 ** The routine mvwin(). 40 ** 41 */ 42 43 #include <curses.priv.h> 44 45 MODULE_ID("$Id: lib_mvwin.c,v 1.3 2010/01/12 23:22:06 nicm Exp $") 46 47 NCURSES_EXPORT(int) 48 mvwin(WINDOW *win, int by, int bx) 49 { 50 T((T_CALLED("mvwin(%p,%d,%d)"), win, by, bx)); 51 52 if (!win || (win->_flags & _ISPAD)) 53 returnCode(ERR); 54 55 /* 56 * mvwin() should only modify the indices. See test/demo_menus.c and 57 * test/movewindow.c for examples. 58 */ 59 #if 0 60 /* Copying subwindows is allowed, but it is expensive... */ 61 if (win->_flags & _SUBWIN) { 62 int err = ERR; 63 WINDOW *parent = win->_parent; 64 if (parent) { /* Now comes the complicated and costly part, you should really 65 * try to avoid to move subwindows. Because a subwindow shares 66 * the text buffers with its parent, one can't do a simple 67 * memmove of the text buffers. One has to create a copy, then 68 * to relocate the subwindow and then to do a copy. 69 */ 70 if ((by - parent->_begy == win->_pary) && 71 (bx - parent->_begx == win->_parx)) 72 err = OK; /* we don't actually move */ 73 else { 74 WINDOW *clone = dupwin(win); 75 if (clone) { 76 /* now we have the clone, so relocate win */ 77 78 werase(win); /* Erase the original place */ 79 /* fill with parents background */ 80 wbkgrnd(win, CHREF(parent->_nc_bkgd)); 81 wsyncup(win); /* Tell the parent(s) */ 82 83 err = mvderwin(win, 84 by - parent->_begy, 85 bx - parent->_begx); 86 if (err != ERR) { 87 err = copywin(clone, win, 88 0, 0, 0, 0, win->_maxy, win->_maxx, 0); 89 if (ERR != err) 90 wsyncup(win); 91 } 92 if (ERR == delwin(clone)) 93 err = ERR; 94 } 95 } 96 } 97 returnCode(err); 98 } 99 #endif 100 101 if (by + win->_maxy > screen_lines - 1 102 || bx + win->_maxx > screen_columns - 1 103 || by < 0 104 || bx < 0) 105 returnCode(ERR); 106 107 /* 108 * Whether or not the window is moved, touch the window's contents so 109 * that a following call to 'wrefresh()' will paint the window at the 110 * new location. This ensures that if the caller has refreshed another 111 * window at the same location, that this one will be displayed. 112 */ 113 win->_begy = by; 114 win->_begx = bx; 115 returnCode(touchwin(win)); 116 } 117