1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 1997 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1988 AT&T */ 28 /* All Rights Reserved */ 29 30 /* 31 * University Copyright- Copyright (c) 1982, 1986, 1988 32 * The Regents of the University of California 33 * All Rights Reserved 34 * 35 * University Acknowledgment- Portions of this document are derived from 36 * software developed by the University of California, Berkeley, and its 37 * contributors. 38 */ 39 40 #pragma ident "%Z%%M% %I% %E% SMI" 41 42 /*LINTLIBRARY*/ 43 44 #include <sys/types.h> 45 #include "curses_inc.h" 46 47 /* Scroll the given window up/down n lines. */ 48 int 49 wscrl(WINDOW *win, int n) 50 { 51 short curx, cury; 52 bool savimmed, savsync; 53 54 #ifdef DEBUG 55 if (outf) 56 if (win == stdscr) 57 fprintf(outf, "scroll(stdscr, %d)\n", n); 58 else 59 if (win == curscr) 60 fprintf(outf, "scroll(curscr, %d)\n", n); 61 else 62 fprintf(outf, "scroll(%x, %d)\n", win, n); 63 #endif /* DEBUG */ 64 if (!win->_scroll || (win->_flags & _ISPAD)) 65 return (ERR); 66 67 savimmed = win->_immed; 68 savsync = win->_sync; 69 win->_immed = win->_sync = FALSE; 70 71 curx = win->_curx; cury = win->_cury; 72 73 if (cury >= win->_tmarg && cury <= win->_bmarg) 74 win->_cury = win->_tmarg; 75 else 76 win->_cury = 0; 77 78 (void) winsdelln(win, -n); 79 win->_curx = curx; 80 win->_cury = cury; 81 82 win->_sync = savsync; 83 84 if (win->_sync) 85 wsyncup(win); 86 87 return ((win->_immed = savimmed) ? wrefresh(win) : OK); 88 } 89