1 /* $OpenBSD: lib_mvwin.c,v 1.4 2023/10/17 09:52:08 nicm Exp $ */ 2 3 /**************************************************************************** 4 * Copyright 2020,2021 Thomas E. Dickey * 5 * Copyright 1998-2009,2010 Free Software Foundation, Inc. * 6 * * 7 * Permission is hereby granted, free of charge, to any person obtaining a * 8 * copy of this software and associated documentation files (the * 9 * "Software"), to deal in the Software without restriction, including * 10 * without limitation the rights to use, copy, modify, merge, publish, * 11 * distribute, distribute with modifications, sublicense, and/or sell * 12 * copies of the Software, and to permit persons to whom the Software is * 13 * furnished to do so, subject to the following conditions: * 14 * * 15 * The above copyright notice and this permission notice shall be included * 16 * in all copies or substantial portions of the Software. * 17 * * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 21 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 24 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 25 * * 26 * Except as contained in this notice, the name(s) of the above copyright * 27 * holders shall not be used in advertising or otherwise to promote the * 28 * sale, use or other dealings in this Software without prior written * 29 * authorization. * 30 ****************************************************************************/ 31 32 /**************************************************************************** 33 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * 34 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 35 * and: Thomas E. Dickey 1996-on * 36 * and: Juergen Pfeifer * 37 ****************************************************************************/ 38 39 /* 40 ** lib_mvwin.c 41 ** 42 ** The routine mvwin(). 43 ** 44 */ 45 46 #include <curses.priv.h> 47 48 MODULE_ID("$Id: lib_mvwin.c,v 1.4 2023/10/17 09:52:08 nicm Exp $") 49 50 NCURSES_EXPORT(int) 51 mvwin(WINDOW *win, int by, int bx) 52 { 53 #if NCURSES_SP_FUNCS 54 SCREEN *sp = _nc_screen_of(win); 55 #endif 56 57 T((T_CALLED("mvwin(%p,%d,%d)"), (void *) win, by, bx)); 58 59 if (!win || IS_PAD(win)) 60 returnCode(ERR); 61 62 /* 63 * mvwin() should only modify the indices. See test/demo_menus.c and 64 * test/movewindow.c for examples. 65 */ 66 #if 0 67 /* Copying subwindows is allowed, but it is expensive... */ 68 if (IS_SUBWIN(win)) { 69 int err = ERR; 70 WINDOW *parent = win->_parent; 71 if (parent) { /* Now comes the complicated and costly part, you should really 72 * try to avoid to move subwindows. Because a subwindow shares 73 * the text buffers with its parent, one can't do a simple 74 * memmove of the text buffers. One has to create a copy, then 75 * to relocate the subwindow and then to do a copy. 76 */ 77 if ((by - parent->_begy == win->_pary) && 78 (bx - parent->_begx == win->_parx)) 79 err = OK; /* we don't actually move */ 80 else { 81 WINDOW *clone = dupwin(win); 82 if (clone) { 83 /* now we have the clone, so relocate win */ 84 85 werase(win); /* Erase the original place */ 86 /* fill with parents background */ 87 wbkgrnd(win, CHREF(parent->_nc_bkgd)); 88 wsyncup(win); /* Tell the parent(s) */ 89 90 err = mvderwin(win, 91 by - parent->_begy, 92 bx - parent->_begx); 93 if (err != ERR) { 94 err = copywin(clone, win, 95 0, 0, 0, 0, win->_maxy, win->_maxx, 0); 96 if (ERR != err) 97 wsyncup(win); 98 } 99 if (ERR == delwin(clone)) 100 err = ERR; 101 } 102 } 103 } 104 returnCode(err); 105 } 106 #endif 107 108 if (by + win->_maxy > screen_lines(SP_PARM) - 1 109 || bx + win->_maxx > screen_columns(SP_PARM) - 1 110 || by < 0 111 || bx < 0) 112 returnCode(ERR); 113 114 /* 115 * Whether or not the window is moved, touch the window's contents so 116 * that a following call to 'wrefresh()' will paint the window at the 117 * new location. This ensures that if the caller has refreshed another 118 * window at the same location, that this one will be displayed. 119 */ 120 win->_begy = (NCURSES_SIZE_T) by; 121 win->_begx = (NCURSES_SIZE_T) bx; 122 returnCode(touchwin(win)); 123 } 124