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 (c) 1995-1998 by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* LINTLIBRARY */ 30 31 /* 32 * wdelch.c 33 * 34 * XCurses Library 35 * 36 * Copyright 1990, 1995 by Mortice Kern Systems Inc. All rights reserved. 37 * 38 */ 39 40 #ifdef M_RCSID 41 #ifndef lint 42 static char rcsID[] = 43 "$Header: /team/ps/sun_xcurses/archive/local_changes/xcurses/src/lib/" 44 "libxcurses/src/libc/xcurses/rcs/wdelch.c 1.3 1998/05/26 14:22:13 " 45 "cbates Exp $"; 46 #endif 47 #endif 48 49 #include <private.h> 50 #include <string.h> 51 52 /* 53 * Delete the character under the cursor; all characters to the right of 54 * the cursor on the same line are moved to the left by one position and 55 * the last character on the line is filled with a blank. The cursor 56 * position does not change. 57 */ 58 int 59 wdelch(WINDOW *w) 60 { 61 int next, width, y, x; 62 63 y = w->_cury; 64 x = w->_curx; 65 66 next = __m_cc_next(w, y, x); 67 x = __m_cc_first(w, y, x); 68 69 /* Determine the character width to delete. */ 70 width = __m_cc_width(&w->_line[y][x]); 71 72 /* Shift line left to erase the character under the cursor. */ 73 (void) memcpy(&w->_line[y][x], &w->_line[y][next], 74 (w->_maxx - next) * sizeof (**w->_line)); 75 76 /* 77 * Add blank(s) to the end of line based on the width 78 * of the character that was deleted. 79 */ 80 (void) __m_cc_erase(w, y, w->_maxx - width, y, w->_maxx - 1); 81 82 /* Set dity region markers. */ 83 if (x < w->_first[y]) 84 w->_first[y] = (short) x; 85 w->_last[y] = w->_maxx; 86 87 WSYNC(w); 88 89 return (WFLUSH(w)); 90 } 91