1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 1997 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1988 AT&T */ 28 /* All Rights Reserved */ 29 30 /* 31 * University Copyright- Copyright (c) 1982, 1986, 1988 32 * The Regents of the University of California 33 * All Rights Reserved 34 * 35 * University Acknowledgment- Portions of this document are derived from 36 * software developed by the University of California, Berkeley, and its 37 * contributors. 38 */ 39 40 /*LINTLIBRARY*/ 41 42 #include <sys/types.h> 43 #include <stdlib.h> 44 #include "curses_inc.h" 45 46 /* 47 * Pad refresh. These routines are provided for upward compatibility 48 * with the 'pad' structure of Sys V.2. Since windows now can be of 49 * arbitrary size and derived windows can be moved within their 50 * parent windows effortlessly, a separate notion of 'pad' as 51 * a larger-than-screen window is no longer necessary. 52 * 53 * pminy, pminx: the area (pminy, pminx, maxy, maxx) of pad is refreshed 54 * sminy, sminx, smaxy, smaxx: the screen area to be affected. 55 */ 56 57 int 58 prefresh(WINDOW *pad, int pminy, int pminx, int sminy, 59 int sminx, int smaxy, int smaxx) 60 { 61 return (_prefresh(wrefresh, pad, pminy, pminx, sminy, 62 sminx, smaxy, smaxx)); 63 } 64 65 int 66 _prefresh(int (*func)(WINDOW *), WINDOW *pad, int pminy, int pminx, 67 int sminy, int sminx, int smaxy, int smaxx) 68 { 69 70 /* 71 * If pad->_padwin doesn't exist(meaning that this is 72 * the first call to p*refresh) create it as a derived window 73 */ 74 75 if (!pad->_padwin) { 76 if ((pad->_padwin = derwin(pad, pad->_maxy, pad->_maxx, 77 0, 0)) == NULL) { 78 goto bad; 79 } 80 /* else pad->_padwin->_use_idl = TRUE; */ 81 82 /* 83 * The following makes parent window to run in fast mode 84 * by creating an illusion that it has no derived windows 85 */ 86 87 pad->_ndescs--; 88 } 89 90 if (_padjust(pad, pminy, pminx, sminy, sminx, smaxy, smaxx) == ERR) 91 bad: 92 return (ERR); 93 94 (*func)(pad->_padwin); 95 return (OK); 96 } 97 98 int 99 _padjust(WINDOW *pad, int pminy, int pminx, int sminy, 100 int sminx, int smaxy, int smaxx) 101 { 102 short prows, pcols, y; 103 WINDOW *padwin = pad->_padwin; 104 chtype **p_y, **o_y; 105 106 /* make sure the area requested to be updated is on the pad */ 107 108 if ((pminy >= pad->_maxy) || (pminx >= pad->_maxx)) 109 return (ERR); 110 111 /* determine the area of the pad to be updated */ 112 113 if (pminy < 0) 114 pminy = 0; 115 if (pminx < 0) 116 pminx = 0; 117 118 /* determine the screen area affected */ 119 120 if (sminy < 0) 121 sminy = 0; 122 if (sminx < 0) 123 sminx = 0; 124 if (smaxy < sminy) 125 smaxy = LINES - 1; 126 if (smaxx < sminx) 127 smaxx = COLS - 1; 128 129 /* 130 * Modify the area of the pad to be updated taking into 131 * consideration screen parameters. 132 */ 133 134 if ((prows = (smaxy - sminy) + 1) > (y = pad->_maxy - pminy)) 135 prows = y; 136 if ((pcols = (smaxx - sminx) + 1) > (y = pad->_maxx - pminx)) 137 pcols = y; 138 139 if (((padwin->_cury = pad->_cury - pminy) < 0) || 140 (padwin->_cury >= prows)) 141 padwin->_cury = 0; 142 if (((padwin->_curx = pad->_curx - pminx) < 0) || 143 (padwin->_curx >= pcols)) 144 padwin->_curx = 0; 145 146 padwin->_leave = pad->_leave; 147 padwin->_use_idl = pad->_use_idl; 148 149 150 /* 151 * If padwin refers to the same derwin, return. Otherwise 152 * update the coordinates and malloc'ed areas of the padwin 153 */ 154 155 if ((padwin->_begy == sminy) && (padwin->_begx == sminx) && 156 (padwin->_maxy == prows) && (padwin->_maxx == pcols) && 157 (padwin->_y[0] == (pad->_y[pminy] + pminx)) && 158 (!(pad->_flags & _WINSDEL))) { 159 goto good; 160 } 161 162 /* update the coordinates of the pad */ 163 164 padwin->_maxy = prows; 165 padwin->_maxx = pcols; 166 /* LINTED */ 167 padwin->_begy = (short)sminy; 168 /* LINTED */ 169 padwin->_begx = (short)sminx; 170 /* LINTED */ 171 padwin->_pary = (short)pminy; 172 /* LINTED */ 173 padwin->_parx = (short)pminx; 174 175 /* update the malloc'ed areas */ 176 177 p_y = padwin->_y; 178 o_y = pad->_y; 179 180 for (y = 0; y < prows; y++, pminy++) 181 p_y[y] = o_y[pminy] + pminx; 182 183 (void) wtouchln(padwin, 0, prows, TRUE); 184 good: 185 return (OK); 186 } 187