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 #pragma ident "%Z%%M% %I% %E% SMI" 41 42 /*LINTLIBRARY*/ 43 44 #include <sys/types.h> 45 #include <stdlib.h> 46 #include "curses_inc.h" 47 48 /* 49 * Pad refresh. These routines are provided for upward compatibility 50 * with the 'pad' structure of Sys V.2. Since windows now can be of 51 * arbitrary size and derived windows can be moved within their 52 * parent windows effortlessly, a separate notion of 'pad' as 53 * a larger-than-screen window is no longer necessary. 54 * 55 * pminy, pminx: the area (pminy, pminx, maxy, maxx) of pad is refreshed 56 * sminy, sminx, smaxy, smaxx: the screen area to be affected. 57 */ 58 59 int 60 prefresh(WINDOW *pad, int pminy, int pminx, int sminy, 61 int sminx, int smaxy, int smaxx) 62 { 63 return (_prefresh(wrefresh, pad, pminy, pminx, sminy, 64 sminx, smaxy, smaxx)); 65 } 66 67 int 68 _prefresh(int (*func)(WINDOW *), WINDOW *pad, int pminy, int pminx, 69 int sminy, int sminx, int smaxy, int smaxx) 70 { 71 72 /* 73 * If pad->_padwin doesn't exist(meaning that this is 74 * the first call to p*refresh) create it as a derived window 75 */ 76 77 if (!pad->_padwin) { 78 if ((pad->_padwin = derwin(pad, pad->_maxy, pad->_maxx, 79 0, 0)) == NULL) { 80 goto bad; 81 } 82 /* else pad->_padwin->_use_idl = TRUE; */ 83 84 /* 85 * The following makes parent window to run in fast mode 86 * by creating an illusion that it has no derived windows 87 */ 88 89 pad->_ndescs--; 90 } 91 92 if (_padjust(pad, pminy, pminx, sminy, sminx, smaxy, smaxx) == ERR) 93 bad: 94 return (ERR); 95 96 (*func)(pad->_padwin); 97 return (OK); 98 } 99 100 int 101 _padjust(WINDOW *pad, int pminy, int pminx, int sminy, 102 int sminx, int smaxy, int smaxx) 103 { 104 short prows, pcols, y; 105 WINDOW *padwin = pad->_padwin; 106 chtype **p_y, **o_y; 107 108 /* make sure the area requested to be updated is on the pad */ 109 110 if ((pminy >= pad->_maxy) || (pminx >= pad->_maxx)) 111 return (ERR); 112 113 /* determine the area of the pad to be updated */ 114 115 if (pminy < 0) 116 pminy = 0; 117 if (pminx < 0) 118 pminx = 0; 119 120 /* determine the screen area affected */ 121 122 if (sminy < 0) 123 sminy = 0; 124 if (sminx < 0) 125 sminx = 0; 126 if (smaxy < sminy) 127 smaxy = LINES - 1; 128 if (smaxx < sminx) 129 smaxx = COLS - 1; 130 131 /* 132 * Modify the area of the pad to be updated taking into 133 * consideration screen parameters. 134 */ 135 136 if ((prows = (smaxy - sminy) + 1) > (y = pad->_maxy - pminy)) 137 prows = y; 138 if ((pcols = (smaxx - sminx) + 1) > (y = pad->_maxx - pminx)) 139 pcols = y; 140 141 if (((padwin->_cury = pad->_cury - pminy) < 0) || 142 (padwin->_cury >= prows)) 143 padwin->_cury = 0; 144 if (((padwin->_curx = pad->_curx - pminx) < 0) || 145 (padwin->_curx >= pcols)) 146 padwin->_curx = 0; 147 148 padwin->_leave = pad->_leave; 149 padwin->_use_idl = pad->_use_idl; 150 151 152 /* 153 * If padwin refers to the same derwin, return. Otherwise 154 * update the coordinates and malloc'ed areas of the padwin 155 */ 156 157 if ((padwin->_begy == sminy) && (padwin->_begx == sminx) && 158 (padwin->_maxy == prows) && (padwin->_maxx == pcols) && 159 (padwin->_y[0] == (pad->_y[pminy] + pminx)) && 160 (!(pad->_flags & _WINSDEL))) { 161 goto good; 162 } 163 164 /* update the coordinates of the pad */ 165 166 padwin->_maxy = prows; 167 padwin->_maxx = pcols; 168 /* LINTED */ 169 padwin->_begy = (short)sminy; 170 /* LINTED */ 171 padwin->_begx = (short)sminx; 172 /* LINTED */ 173 padwin->_pary = (short)pminy; 174 /* LINTED */ 175 padwin->_parx = (short)pminx; 176 177 /* update the malloc'ed areas */ 178 179 p_y = padwin->_y; 180 o_y = pad->_y; 181 182 for (y = 0; y < prows; y++, pminy++) 183 p_y[y] = o_y[pminy] + pminx; 184 185 (void) wtouchln(padwin, 0, prows, TRUE); 186 good: 187 return (OK); 188 } 189