1 /* $NetBSD: insch.c,v 1.16 2002/01/02 10:38:28 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)insch.c 8.2 (Berkeley) 5/4/94"; 40 #else 41 __RCSID("$NetBSD: insch.c,v 1.16 2002/01/02 10:38:28 blymn Exp $"); 42 #endif 43 #endif /* not lint */ 44 45 #include <string.h> 46 47 #include "curses.h" 48 #include "curses_private.h" 49 50 #ifndef _CURSES_USE_MACROS 51 52 /* 53 * insch -- 54 * Do an insert-char on the line, leaving (cury, curx) unchanged. 55 */ 56 int 57 insch(chtype ch) 58 { 59 return winsch(stdscr, ch); 60 } 61 62 /* 63 * mvinsch -- 64 * Do an insert-char on the line at (y, x). 65 */ 66 int 67 mvinsch(int y, int x, chtype ch) 68 { 69 return mvwinsch(stdscr, y, x, ch); 70 } 71 72 /* 73 * mvwinsch -- 74 * Do an insert-char on the line at (y, x) in the given window. 75 */ 76 int 77 mvwinsch(WINDOW *win, int y, int x, chtype ch) 78 { 79 if (wmove(win, y, x) == ERR) 80 return ERR; 81 82 return winsch(stdscr, ch); 83 } 84 85 #endif 86 87 /* 88 * winsch -- 89 * Do an insert-char on the line, leaving (cury, curx) unchanged. 90 */ 91 int 92 winsch(WINDOW *win, chtype ch) 93 { 94 95 __LDATA *end, *temp1, *temp2; 96 97 end = &win->lines[win->cury]->line[win->curx]; 98 temp1 = &win->lines[win->cury]->line[win->maxx - 1]; 99 temp2 = temp1 - 1; 100 while (temp1 > end) { 101 (void) memcpy(temp1, temp2, sizeof(__LDATA)); 102 temp1--, temp2--; 103 } 104 temp1->ch = (wchar_t) ch & __CHARTEXT; 105 temp1->bch = win->bch; 106 temp1->attr = (attr_t) ch & __ATTRIBUTES; 107 temp1->battr = win->battr; 108 __touchline(win, (int) win->cury, (int) win->curx, (int) win->maxx - 1); 109 if (win->cury == LINES - 1 && 110 (win->lines[LINES - 1]->line[COLS - 1].ch != ' ' || 111 win->lines[LINES - 1]->line[COLS - 1].bch != ' ' || 112 win->lines[LINES - 1]->line[COLS - 1].attr != 0 || 113 win->lines[LINES - 1]->line[COLS - 1].battr != 0)) { 114 if (win->flags & __SCROLLOK) { 115 wrefresh(win); 116 scroll(win); 117 win->cury--; 118 } else 119 return (ERR); 120 } 121 return (OK); 122 } 123