insdelln.c revision 1.18
1 /* $NetBSD: insdelln.c,v 1.18 2017/01/06 13:53:18 roy Exp $ */ 2 3 /* 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Julian Coleman. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 __RCSID("$NetBSD: insdelln.c,v 1.18 2017/01/06 13:53:18 roy Exp $"); 35 #endif /* not lint */ 36 37 /* 38 * Based on deleteln.c and insertln.c - 39 * Copyright (c) 1981, 1993, 1994 40 * The Regents of the University of California. All rights reserved. 41 */ 42 43 #include <string.h> 44 #include <stdlib.h> 45 46 #include "curses.h" 47 #include "curses_private.h" 48 49 #ifndef _CURSES_USE_MACROS 50 51 /* 52 * insdelln -- 53 * Insert or delete lines on stdscr, leaving (cury, curx) unchanged. 54 */ 55 int 56 insdelln(int nlines) 57 { 58 59 return winsdelln(stdscr, nlines); 60 } 61 62 #endif 63 64 /* 65 * winsdelln -- 66 * Insert or delete lines on the window, leaving (cury, curx) unchanged. 67 */ 68 int 69 winsdelln(WINDOW *win, int nlines) 70 { 71 int y, i, last; 72 __LINE *temp; 73 #ifdef HAVE_WCHAR 74 __LDATA *lp; 75 #endif /* HAVE_WCHAR */ 76 attr_t attr; 77 78 #ifdef DEBUG 79 __CTRACE(__CTRACE_LINE, 80 "winsdelln: (%p) cury=%d lines=%d\n", win, win->cury, nlines); 81 #endif 82 83 if (!nlines) 84 return OK; 85 86 if (__using_color && win != curscr) 87 attr = win->battr & __COLOR; 88 else 89 attr = 0; 90 91 if (nlines > 0) { 92 /* Insert lines */ 93 if (win->cury < win->scr_t || win->cury > win->scr_b) { 94 /* Outside scrolling region */ 95 if (nlines > win->maxy - win->cury) 96 nlines = win->maxy - win->cury; 97 last = win->maxy - 1; 98 } else { 99 /* Inside scrolling region */ 100 if (nlines > win->scr_b + 1 - win->cury) 101 nlines = win->scr_b + 1 - win->cury; 102 last = win->scr_b; 103 } 104 for (y = last - nlines; y >= win->cury; --y) { 105 win->alines[y]->flags &= ~__ISPASTEOL; 106 win->alines[y + nlines]->flags &= ~__ISPASTEOL; 107 if (win->orig == NULL) { 108 temp = win->alines[y + nlines]; 109 win->alines[y + nlines] = win->alines[y]; 110 win->alines[y] = temp; 111 } else { 112 (void)memcpy(win->alines[y + nlines]->line, 113 win->alines[y]->line, 114 (size_t)win->maxx * __LDATASIZE); 115 } 116 } 117 for (y = win->cury - 1 + nlines; y >= win->cury; --y) 118 for (i = 0; i < win->maxx; i++) { 119 win->alines[y]->line[i].ch = win->bch; 120 win->alines[y]->line[i].attr = attr; 121 #ifndef HAVE_WCHAR 122 win->alines[y]->line[i].ch = win->bch; 123 #else 124 win->alines[y]->line[i].ch 125 = (wchar_t)btowc((int)win->bch ); 126 lp = &win->alines[y]->line[i]; 127 if (_cursesi_copy_nsp(win->bnsp, lp) == ERR) 128 return ERR; 129 SET_WCOL(*lp, 1); 130 #endif /* HAVE_WCHAR */ 131 } 132 for (y = last; y >= win->cury; --y) 133 __touchline(win, y, 0, (int)win->maxx - 1); 134 } else { 135 /* Delete nlines */ 136 nlines = 0 - nlines; 137 if (win->cury < win->scr_t || win->cury > win->scr_b) { 138 /* Outside scrolling region */ 139 if (nlines > win->maxy - win->cury) 140 nlines = win->maxy - win->cury; 141 last = win->maxy; 142 } else { 143 /* Inside scrolling region */ 144 if (nlines > win->scr_b + 1 - win->cury) 145 nlines = win->scr_b + 1 - win->cury; 146 last = win->scr_b + 1; 147 } 148 for (y = win->cury; y < last - nlines; y++) { 149 win->alines[y]->flags &= ~__ISPASTEOL; 150 win->alines[y + nlines]->flags &= ~__ISPASTEOL; 151 if (win->orig == NULL) { 152 temp = win->alines[y]; 153 win->alines[y] = win->alines[y + nlines]; 154 win->alines[y + nlines] = temp; 155 } else { 156 (void)memcpy(win->alines[y]->line, 157 win->alines[y + nlines]->line, 158 (size_t)win->maxx * __LDATASIZE); 159 } 160 } 161 for (y = last - nlines; y < last; y++) 162 for (i = 0; i < win->maxx; i++) { 163 win->alines[y]->line[i].ch = win->bch; 164 win->alines[y]->line[i].attr = attr; 165 #ifndef HAVE_WCHAR 166 win->alines[y]->line[i].ch = win->bch; 167 #else 168 win->alines[y]->line[i].ch 169 = (wchar_t)btowc((int)win->bch); 170 lp = &win->alines[y]->line[i]; 171 SET_WCOL( *lp, 1 ); 172 if (_cursesi_copy_nsp(win->bnsp, lp) == ERR) 173 return ERR; 174 #endif /* HAVE_WCHAR */ 175 } 176 for (y = win->cury; y < last; y++) 177 __touchline(win, y, 0, (int)win->maxx - 1); 178 } 179 if (win->orig != NULL) 180 __id_subwins(win->orig); 181 __sync(win); 182 return OK; 183 } 184
Indexes created Tue Oct 14 11:09:46 GMT 2025