1 /* $NetBSD: mvwin.c,v 1.16 2011/09/15 11:58:05 blymn Exp $ */ 2 3 /* 4 * Copyright (c) 1981, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)mvwin.c 8.2 (Berkeley) 5/4/94"; 36 #else 37 __RCSID("$NetBSD: mvwin.c,v 1.16 2011/09/15 11:58:05 blymn Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #include "curses.h" 42 #include "curses_private.h" 43 44 /* 45 * mvderwin -- 46 * Move a derived window. This does not change the physical screen 47 * coordinates of the subwin, rather maps the characters in the subwin 48 * sized part of the parent window starting at dy, dx into the subwin. 49 * 50 */ 51 int 52 mvderwin(WINDOW *win, int dy, int dx) 53 { 54 WINDOW *parent; 55 int ox, oy, i; 56 57 if (win == NULL) 58 return ERR; 59 60 parent = win->orig; 61 62 if (parent == NULL) 63 return ERR; 64 65 if (((win->maxx + dx) > parent->maxx) || 66 ((win->maxy + dy) > parent->maxy)) 67 return ERR; 68 69 ox = win->begx; 70 oy = win->begy; 71 72 win->begx = parent->begx + dx; 73 win->begy = parent->begy + dy; 74 75 __set_subwin(parent, win); 76 77 win->begx = ox; 78 win->begy = oy; 79 80 for (i = 0; i < win->maxy; i++) 81 win->alines[i]->flags = __ISDIRTY; 82 83 return OK; 84 } 85 86 /* 87 * mvwin -- 88 * Relocate the starting position of a window. 89 */ 90 int 91 mvwin(WINDOW *win, int by, int bx) 92 { 93 WINDOW *orig; 94 int dy, dx; 95 96 if (by < 0 || by + win->maxy > LINES || bx < 0 || bx + win->maxx > COLS) 97 return (ERR); 98 dy = by - win->begy; 99 dx = bx - win->begx; 100 orig = win->orig; 101 if (orig == NULL) { 102 orig = win; 103 do { 104 win->begy += dy; 105 win->begx += dx; 106 __swflags(win); 107 win = win->nextp; 108 } while (win != orig); 109 } else { 110 if (by < orig->begy || win->maxy + dy > orig->maxy) 111 return (ERR); 112 if (bx < orig->begx || win->maxx + dx > orig->maxx) 113 return (ERR); 114 win->begy = by; 115 win->begx = bx; 116 __swflags(win); 117 __set_subwin(orig, win); 118 } 119 __touchwin(win); 120 return (OK); 121 } 122