1 /* $NetBSD: insch.c,v 1.20 2006/02/05 17:04:46 jdc 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[] = "@(#)insch.c 8.2 (Berkeley) 5/4/94"; 36 #else 37 __RCSID("$NetBSD: insch.c,v 1.20 2006/02/05 17:04:46 jdc Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #include <string.h> 42 43 #include "curses.h" 44 #include "curses_private.h" 45 46 #ifndef _CURSES_USE_MACROS 47 48 /* 49 * insch -- 50 * Do an insert-char on the line, leaving (cury, curx) unchanged. 51 */ 52 int 53 insch(chtype ch) 54 { 55 return winsch(stdscr, ch); 56 } 57 58 /* 59 * mvinsch -- 60 * Do an insert-char on the line at (y, x). 61 */ 62 int 63 mvinsch(int y, int x, chtype ch) 64 { 65 return mvwinsch(stdscr, y, x, ch); 66 } 67 68 /* 69 * mvwinsch -- 70 * Do an insert-char on the line at (y, x) in the given window. 71 */ 72 int 73 mvwinsch(WINDOW *win, int y, int x, chtype ch) 74 { 75 if (wmove(win, y, x) == ERR) 76 return ERR; 77 78 return winsch(stdscr, ch); 79 } 80 81 #endif 82 83 /* 84 * winsch -- 85 * Do an insert-char on the line, leaving (cury, curx) unchanged. 86 */ 87 int 88 winsch(WINDOW *win, chtype ch) 89 { 90 91 __LDATA *end, *temp1, *temp2; 92 attr_t attr; 93 94 if (__using_color) 95 attr = win->battr & __COLOR; 96 else 97 attr = 0; 98 end = &win->lines[win->cury]->line[win->curx]; 99 temp1 = &win->lines[win->cury]->line[win->maxx - 1]; 100 temp2 = temp1 - 1; 101 while (temp1 > end) { 102 (void) memcpy(temp1, temp2, sizeof(__LDATA)); 103 temp1--, temp2--; 104 } 105 temp1->ch = (wchar_t) ch & __CHARTEXT; 106 if (temp1->ch == ' ') 107 temp1->ch = win->bch; 108 temp1->attr = (attr_t) ch & __ATTRIBUTES; 109 if (temp1->attr & __COLOR) 110 temp1->attr |= (win->battr & ~__COLOR); 111 else 112 temp1->attr |= win->battr; 113 __touchline(win, (int) win->cury, (int) win->curx, (int) win->maxx - 1); 114 if (win->cury == LINES - 1 && 115 (win->lines[LINES - 1]->line[COLS - 1].ch != ' ' || 116 win->lines[LINES - 1]->line[COLS - 1].attr != attr)) { 117 if (win->flags & __SCROLLOK) { 118 wrefresh(win); 119 scroll(win); 120 win->cury--; 121 } else 122 return (ERR); 123 } 124 return (OK); 125 } 126