insdelln.c revision 1.8
1 /* $NetBSD: insdelln.c,v 1.8 2001/04/20 12:56:08 jdc 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 #ifndef lint 41 __RCSID("$NetBSD: insdelln.c,v 1.8 2001/04/20 12:56:08 jdc Exp $"); 42 #endif /* not lint */ 43 44 /* 45 * Based on deleteln.c and insertln.c - 46 * Copyright (c) 1981, 1993, 1994 47 * The Regents of the University of California. All rights reserved. 48 */ 49 50 #include <string.h> 51 52 #include "curses.h" 53 #include "curses_private.h" 54 55 #ifndef _CURSES_USE_MACROS 56 57 /* 58 * insdelln -- 59 * Insert or delete lines on stdscr, leaving (cury, curx) unchanged. 60 */ 61 int 62 insdelln(int lines) 63 { 64 return winsdelln(stdscr, lines); 65 } 66 67 #endif 68 69 /* 70 * winsdelln -- 71 * Insert or delete lines on the window, leaving (cury, curx) unchanged. 72 */ 73 int 74 winsdelln(WINDOW *win, int lines) 75 { 76 int y, i, last; 77 __LINE *temp; 78 79 #ifdef DEBUG 80 __CTRACE("winsdelln: (%0.2o) cury=%d lines=%d\n", win, win->cury, 81 lines); 82 #endif 83 84 if (!lines) 85 return(OK); 86 87 if (lines > 0) { 88 /* Insert lines */ 89 if (win->cury < win->scr_t || win->cury > win->scr_b) { 90 /* Outside scrolling region */ 91 if (lines > win->maxy - win->cury) 92 lines = win->maxy - win->cury; 93 last = win->maxy - 1; 94 } else { 95 /* Inside scrolling region */ 96 if (lines > win->scr_b + 1 - win->cury) 97 lines = win->scr_b + 1 - win->cury; 98 last = win->scr_b; 99 } 100 for (y = last - lines; y >= win->cury; --y) { 101 win->lines[y]->flags &= ~__ISPASTEOL; 102 win->lines[y + lines]->flags &= ~__ISPASTEOL; 103 if (win->orig == NULL) { 104 temp = win->lines[y + lines]; 105 win->lines[y + lines] = win->lines[y]; 106 win->lines[y] = temp; 107 } else { 108 (void) memcpy(win->lines[y + lines]->line, 109 win->lines[y]->line, 110 (size_t) win->maxx * __LDATASIZE * lines); 111 temp = win->lines[y]; 112 } 113 } 114 for (y = win->cury - 1 + lines; y >= win->cury; --y) 115 for (i = 0; i < win->maxx; i++) { 116 win->lines[y]->line[i].ch = ' '; 117 win->lines[y]->line[i].bch = win->bch; 118 win->lines[y]->line[i].attr = 0; 119 win->lines[y]->line[i].battr = win->battr; 120 } 121 for (y = last; y >= win->cury; --y) 122 __touchline(win, y, 0, (int) win->maxx - 1); 123 } else { 124 /* Delete lines */ 125 lines = 0 - lines; 126 if (win->cury < win->scr_t || win->cury > win->scr_b) { 127 /* Outside scrolling region */ 128 if (lines > win->maxy - win->cury) 129 lines = win->maxy - win->cury; 130 last = win->maxy; 131 } else { 132 /* Inside scrolling region */ 133 if (lines > win->scr_b + 1 - win->cury) 134 lines = win->scr_b + 1 - win->cury; 135 last = win->scr_b + 1; 136 } 137 for (y = win->cury; y < last - lines; y++) { 138 win->lines[y]->flags &= ~__ISPASTEOL; 139 win->lines[y + lines]->flags &= ~__ISPASTEOL; 140 if (win->orig == NULL) { 141 temp = win->lines[y]; 142 win->lines[y] = win->lines[y + lines]; 143 win->lines[y + lines] = temp; 144 } else { 145 (void) memcpy(win->lines[y]->line, 146 win->lines[y + lines]->line, 147 (size_t) win->maxx * __LDATASIZE * lines); 148 temp = win->lines[y + lines]; 149 } 150 } 151 for (y = last - lines; y < last; y++) 152 for (i = 0; i < win->maxx; i++) { 153 win->lines[y]->line[i].ch = ' '; 154 win->lines[y]->line[i].bch = win->bch; 155 win->lines[y]->line[i].attr = 0; 156 win->lines[y]->line[i].battr = win->battr; 157 } 158 for (y = win->cury; y < last; y++) 159 __touchline(win, y, 0, (int) win->maxx - 1); 160 } 161 if (win->orig != NULL) 162 __id_subwins(win->orig); 163 return (OK); 164 } 165
Indexes created Tue Sep 23 20:09:58 GMT 2025