1 /**************************************************************************** 2 * Copyright (c) 1998-2001,2006 Free Software Foundation, Inc. * 3 * * 4 * Permission is hereby granted, free of charge, to any person obtaining a * 5 * copy of this software and associated documentation files (the * 6 * "Software"), to deal in the Software without restriction, including * 7 * without limitation the rights to use, copy, modify, merge, publish, * 8 * distribute, distribute with modifications, sublicense, and/or sell * 9 * copies of the Software, and to permit persons to whom the Software is * 10 * furnished to do so, subject to the following conditions: * 11 * * 12 * The above copyright notice and this permission notice shall be included * 13 * in all copies or substantial portions of the Software. * 14 * * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 22 * * 23 * Except as contained in this notice, the name(s) of the above copyright * 24 * holders shall not be used in advertising or otherwise to promote the * 25 * sale, use or other dealings in this Software without prior written * 26 * authorization. * 27 ****************************************************************************/ 28 29 /**************************************************************************** 30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * 31 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 32 ****************************************************************************/ 33 34 /* 35 ** lib_mvwin.c 36 ** 37 ** The routine mvwin(). 38 ** 39 */ 40 41 #include <curses.priv.h> 42 43 MODULE_ID("$Id: lib_mvwin.c,v 1.14 2006/02/25 22:53:46 tom Exp $") 44 45 NCURSES_EXPORT(int) 46 mvwin(WINDOW *win, int by, int bx) 47 { 48 T((T_CALLED("mvwin(%p,%d,%d)"), win, by, bx)); 49 50 if (!win || (win->_flags & _ISPAD)) 51 returnCode(ERR); 52 53 /* 54 * mvwin() should only modify the indices. See test/demo_menus.c and 55 * test/movewindow.c for examples. 56 */ 57 #if 0 58 /* Copying subwindows is allowed, but it is expensive... */ 59 if (win->_flags & _SUBWIN) { 60 int err = ERR; 61 WINDOW *parent = win->_parent; 62 if (parent) { /* Now comes the complicated and costly part, you should really 63 * try to avoid to move subwindows. Because a subwindow shares 64 * the text buffers with its parent, one can't do a simple 65 * memmove of the text buffers. One has to create a copy, then 66 * to relocate the subwindow and then to do a copy. 67 */ 68 if ((by - parent->_begy == win->_pary) && 69 (bx - parent->_begx == win->_parx)) 70 err = OK; /* we don't actually move */ 71 else { 72 WINDOW *clone = dupwin(win); 73 if (clone) { 74 /* now we have the clone, so relocate win */ 75 76 werase(win); /* Erase the original place */ 77 /* fill with parents background */ 78 wbkgrnd(win, CHREF(parent->_nc_bkgd)); 79 wsyncup(win); /* Tell the parent(s) */ 80 81 err = mvderwin(win, 82 by - parent->_begy, 83 bx - parent->_begx); 84 if (err != ERR) { 85 err = copywin(clone, win, 86 0, 0, 0, 0, win->_maxy, win->_maxx, 0); 87 if (ERR != err) 88 wsyncup(win); 89 } 90 if (ERR == delwin(clone)) 91 err = ERR; 92 } 93 } 94 } 95 returnCode(err); 96 } 97 #endif 98 99 if (by + win->_maxy > screen_lines - 1 100 || bx + win->_maxx > screen_columns - 1 101 || by < 0 102 || bx < 0) 103 returnCode(ERR); 104 105 /* 106 * Whether or not the window is moved, touch the window's contents so 107 * that a following call to 'wrefresh()' will paint the window at the 108 * new location. This ensures that if the caller has refreshed another 109 * window at the same location, that this one will be displayed. 110 */ 111 win->_begy = by; 112 win->_begx = bx; 113 returnCode(touchwin(win)); 114 } 115