| Amit Daniel Kachhap | e6a01f5 | 2011-07-20 11:45:59 +0530 | [diff] [blame] | 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 | } |