1 /* $NetBSD: insch.c,v 1.22 2009/07/22 16:57:15 roy 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 1.22 2009/07/22 16:57:15 roy Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #include <string.h> 42 #include <stdlib.h> 43 44 #include "curses.h" 45 #include "curses_private.h" 46 47 #ifndef _CURSES_USE_MACROS 48 49 /* 50 * insch -- 51 * Do an insert-char on the line, leaving (cury, curx) unchanged. 52 */ 53 int 54 insch(chtype ch) 55 { 56 return winsch(stdscr, ch); 57 } 58 59 /* 60 * mvinsch -- 61 * Do an insert-char on the line at (y, x). 62 */ 63 int 64 mvinsch(int y, int x, chtype ch) 65 { 66 return mvwinsch(stdscr, y, x, ch); 67 } 68 69 /* 70 * mvwinsch -- 71 * Do an insert-char on the line at (y, x) in the given window. 72 */ 73 int 74 mvwinsch(WINDOW *win, int y, int x, chtype ch) 75 { 76 if (wmove(win, y, x) == ERR) 77 return ERR; 78 79 return winsch(stdscr, ch); 80 } 81 82 #endif 83 84 /* 85 * winsch -- 86 * Do an insert-char on the line, leaving (cury, curx) unchanged. 87 */ 88 int 89 winsch(WINDOW *win, chtype ch) 90 { 91 92 __LDATA *end, *temp1, *temp2; 93 attr_t attr; 94 95 if (__using_color) 96 attr = win->battr & __COLOR; 97 else 98 attr = 0; 99 end = &win->alines[win->cury]->line[win->curx]; 100 temp1 = &win->alines[win->cury]->line[win->maxx - 1]; 101 temp2 = temp1 - 1; 102 while (temp1 > end) { 103 (void) memcpy(temp1, temp2, sizeof(__LDATA)); 104 temp1--, temp2--; 105 } 106 temp1->ch = (wchar_t) ch & __CHARTEXT; 107 if (temp1->ch == ' ') 108 temp1->ch = win->bch; 109 temp1->attr = (attr_t) ch & __ATTRIBUTES; 110 if (temp1->attr & __COLOR) 111 temp1->attr |= (win->battr & ~__COLOR); 112 else 113 temp1->attr |= win->battr; 114 #ifdef HAVE_WCHAR 115 if (_cursesi_copy_nsp(win->bnsp, temp1) == ERR) 116 return ERR; 117 SET_WCOL(*temp1, 1); 118 #endif /* HAVE_WCHAR */ 119 __touchline(win, (int) win->cury, (int) win->curx, (int) win->maxx - 1); 120 if (win->cury == LINES - 1 && 121 (win->alines[LINES - 1]->line[COLS - 1].ch != ' ' || 122 win->alines[LINES - 1]->line[COLS - 1].attr != attr)) { 123 if (win->flags & __SCROLLOK) { 124 wrefresh(win); 125 scroll(win); 126 win->cury--; 127 } else 128 return (ERR); 129 } 130 return (OK); 131 } 132