1 /**************************************************************************** 2 * Copyright (c) 1998-2009,2010 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 * and: Thomas E. Dickey 1996-on * 33 * and: Juergen Pfeifer * 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 1.18 2010/12/19 01:22:58 tom Exp $") 46 47 NCURSES_EXPORT(int) 48 mvwin(WINDOW *win, int by, int bx) 49 { 50 #if NCURSES_SP_FUNCS 51 SCREEN *sp = _nc_screen_of(win); 52 #endif 53 54 T((T_CALLED("mvwin(%p,%d,%d)"), (void *) win, by, bx)); 55 56 if (!win || (win->_flags & _ISPAD)) 57 returnCode(ERR); 58 59 /* 60 * mvwin() should only modify the indices. See test/demo_menus.c and 61 * test/movewindow.c for examples. 62 */ 63 #if 0 64 /* Copying subwindows is allowed, but it is expensive... */ 65 if (win->_flags & _SUBWIN) { 66 int err = ERR; 67 WINDOW *parent = win->_parent; 68 if (parent) { /* Now comes the complicated and costly part, you should really 69 * try to avoid to move subwindows. Because a subwindow shares 70 * the text buffers with its parent, one can't do a simple 71 * memmove of the text buffers. One has to create a copy, then 72 * to relocate the subwindow and then to do a copy. 73 */ 74 if ((by - parent->_begy == win->_pary) && 75 (bx - parent->_begx == win->_parx)) 76 err = OK; /* we don't actually move */ 77 else { 78 WINDOW *clone = dupwin(win); 79 if (clone) { 80 /* now we have the clone, so relocate win */ 81 82 werase(win); /* Erase the original place */ 83 /* fill with parents background */ 84 wbkgrnd(win, CHREF(parent->_nc_bkgd)); 85 wsyncup(win); /* Tell the parent(s) */ 86 87 err = mvderwin(win, 88 by - parent->_begy, 89 bx - parent->_begx); 90 if (err != ERR) { 91 err = copywin(clone, win, 92 0, 0, 0, 0, win->_maxy, win->_maxx, 0); 93 if (ERR != err) 94 wsyncup(win); 95 } 96 if (ERR == delwin(clone)) 97 err = ERR; 98 } 99 } 100 } 101 returnCode(err); 102 } 103 #endif 104 105 if (by + win->_maxy > screen_lines(SP_PARM) - 1 106 || bx + win->_maxx > screen_columns(SP_PARM) - 1 107 || by < 0 108 || bx < 0) 109 returnCode(ERR); 110 111 /* 112 * Whether or not the window is moved, touch the window's contents so 113 * that a following call to 'wrefresh()' will paint the window at the 114 * new location. This ensures that if the caller has refreshed another 115 * window at the same location, that this one will be displayed. 116 */ 117 win->_begy = (NCURSES_SIZE_T) by; 118 win->_begx = (NCURSES_SIZE_T) bx; 119 returnCode(touchwin(win)); 120 } 121