1 /* $OpenBSD: lib_mvwin.c,v 1.1 1999/01/18 19:09:53 millert Exp $ */ 2 3 /**************************************************************************** 4 * Copyright (c) 1998 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 38 /* 39 ** lib_mvwin.c 40 ** 41 ** The routine mvwin(). 42 ** 43 */ 44 45 #include <curses.priv.h> 46 47 MODULE_ID("$From: lib_mvwin.c,v 1.7 1998/02/11 12:13:55 tom Exp $") 48 49 int mvwin(WINDOW *win, int by, int bx) 50 { 51 T((T_CALLED("mvwin(%p,%d,%d)"), win, by, bx)); 52 53 if (!win || (win->_flags & _ISPAD)) 54 returnCode(ERR); 55 56 /* Copying subwindows is allowed, but it is expensive... */ 57 if (win->_flags & _SUBWIN) { 58 int err = ERR; 59 WINDOW *parent = win->_parent; 60 if (parent) 61 { /* Now comes the complicated and costly part, you should really 62 * try to avoid to move subwindows. Because a subwindow shares 63 * the text buffers with its parent, one can't do a simple 64 * memmove of the text buffers. One has to create a copy, then 65 * to relocate the subwindow and then to do a copy. 66 */ 67 if ((by - parent->_begy == win->_pary) && 68 (bx - parent->_begx == win->_parx)) 69 err=OK; /* we don't actually move */ 70 else { 71 WINDOW* clone = dupwin(win); 72 if (clone) { 73 /* now we have the clone, so relocate win */ 74 75 werase(win); /* Erase the original place */ 76 wbkgd(win,parent->_bkgd);/* fill with parents background */ 77 wsyncup(win); /* Tell the parent(s) */ 78 79 err = mvderwin(win, 80 by - parent->_begy, 81 bx - parent->_begx); 82 if (err!=ERR) { 83 err = copywin(clone,win, 84 0, 0, 0, 0, win->_maxy, win->_maxx, 0); 85 if (ERR!=err) 86 wsyncup(win); 87 } 88 if (ERR==delwin(clone)) 89 err=ERR; 90 } 91 } 92 } 93 returnCode(err); 94 } 95 96 if (by + win->_maxy > screen_lines - 1 97 || bx + win->_maxx > screen_columns - 1 98 || by < 0 99 || bx < 0) 100 returnCode(ERR); 101 102 /* 103 * Whether or not the window is moved, touch the window's contents so 104 * that a following call to 'wrefresh()' will paint the window at the 105 * new location. This ensures that if the caller has refreshed another 106 * window at the same location, that this one will be displayed. 107 */ 108 win->_begy = by; 109 win->_begx = bx; 110 returnCode(touchwin(win)); 111 } 112