1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate *
4*7c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate * with the License.
8*7c478bd9Sstevel@tonic-gate *
9*7c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate *
14*7c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate *
20*7c478bd9Sstevel@tonic-gate * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate */
22*7c478bd9Sstevel@tonic-gate /*
23*7c478bd9Sstevel@tonic-gate * Copyright 1997 Sun Microsystems, Inc. All rights reserved.
24*7c478bd9Sstevel@tonic-gate * Use is subject to license terms.
25*7c478bd9Sstevel@tonic-gate */
26*7c478bd9Sstevel@tonic-gate
27*7c478bd9Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */
28*7c478bd9Sstevel@tonic-gate /* All Rights Reserved */
29*7c478bd9Sstevel@tonic-gate
30*7c478bd9Sstevel@tonic-gate /*
31*7c478bd9Sstevel@tonic-gate * University Copyright- Copyright (c) 1982, 1986, 1988
32*7c478bd9Sstevel@tonic-gate * The Regents of the University of California
33*7c478bd9Sstevel@tonic-gate * All Rights Reserved
34*7c478bd9Sstevel@tonic-gate *
35*7c478bd9Sstevel@tonic-gate * University Acknowledgment- Portions of this document are derived from
36*7c478bd9Sstevel@tonic-gate * software developed by the University of California, Berkeley, and its
37*7c478bd9Sstevel@tonic-gate * contributors.
38*7c478bd9Sstevel@tonic-gate */
39*7c478bd9Sstevel@tonic-gate
40*7c478bd9Sstevel@tonic-gate /*LINTLIBRARY*/
41*7c478bd9Sstevel@tonic-gate
42*7c478bd9Sstevel@tonic-gate #include <sys/types.h>
43*7c478bd9Sstevel@tonic-gate #include "curses_inc.h"
44*7c478bd9Sstevel@tonic-gate
45*7c478bd9Sstevel@tonic-gate /*
46*7c478bd9Sstevel@tonic-gate * Make a derived window of an existing window. The two windows
47*7c478bd9Sstevel@tonic-gate * share the same character image.
48*7c478bd9Sstevel@tonic-gate * orig: the original window
49*7c478bd9Sstevel@tonic-gate * nl, nc: numbers of lines and columns
50*7c478bd9Sstevel@tonic-gate * by, bx: coordinates for upper-left corner of the derived
51*7c478bd9Sstevel@tonic-gate * window in the coord system of the parent window.
52*7c478bd9Sstevel@tonic-gate */
53*7c478bd9Sstevel@tonic-gate
54*7c478bd9Sstevel@tonic-gate WINDOW *
derwin(WINDOW * orig,int num_lines,int nc,int by,int bx)55*7c478bd9Sstevel@tonic-gate derwin(WINDOW *orig, int num_lines, int nc, int by, int bx)
56*7c478bd9Sstevel@tonic-gate {
57*7c478bd9Sstevel@tonic-gate int y;
58*7c478bd9Sstevel@tonic-gate WINDOW *win = (WINDOW *) NULL, *par;
59*7c478bd9Sstevel@tonic-gate chtype **w_y, **o_y;
60*7c478bd9Sstevel@tonic-gate #ifdef _VR3_COMPAT_CODE
61*7c478bd9Sstevel@tonic-gate _ochtype **w_y16, **o_y16;
62*7c478bd9Sstevel@tonic-gate #endif /* _VR3_COMPAT_CODE */
63*7c478bd9Sstevel@tonic-gate
64*7c478bd9Sstevel@tonic-gate /* make sure window fits inside the original one */
65*7c478bd9Sstevel@tonic-gate if (by < 0 || (by + num_lines) > orig->_maxy || bx < 0 ||
66*7c478bd9Sstevel@tonic-gate (bx + nc) > orig->_maxx)
67*7c478bd9Sstevel@tonic-gate goto done;
68*7c478bd9Sstevel@tonic-gate if (nc == 0)
69*7c478bd9Sstevel@tonic-gate nc = orig->_maxx - bx;
70*7c478bd9Sstevel@tonic-gate if (num_lines == 0)
71*7c478bd9Sstevel@tonic-gate num_lines = orig->_maxy - by;
72*7c478bd9Sstevel@tonic-gate
73*7c478bd9Sstevel@tonic-gate /* Create the window skeleton */
74*7c478bd9Sstevel@tonic-gate if ((win = _makenew(num_lines, nc, by + orig->_begy,
75*7c478bd9Sstevel@tonic-gate bx + orig->_begx)) == NULL)
76*7c478bd9Sstevel@tonic-gate goto done;
77*7c478bd9Sstevel@tonic-gate
78*7c478bd9Sstevel@tonic-gate /* inheritance */
79*7c478bd9Sstevel@tonic-gate /*LINTED*/
80*7c478bd9Sstevel@tonic-gate win->_parx = (short) bx;
81*7c478bd9Sstevel@tonic-gate /*LINTED*/
82*7c478bd9Sstevel@tonic-gate win->_pary = (short) by;
83*7c478bd9Sstevel@tonic-gate win->_bkgd = orig->_bkgd;
84*7c478bd9Sstevel@tonic-gate win->_attrs = orig->_attrs;
85*7c478bd9Sstevel@tonic-gate w_y = win->_y;
86*7c478bd9Sstevel@tonic-gate o_y = orig->_y;
87*7c478bd9Sstevel@tonic-gate
88*7c478bd9Sstevel@tonic-gate #ifdef _VR3_COMPAT_CODE
89*7c478bd9Sstevel@tonic-gate if (_y16update) {
90*7c478bd9Sstevel@tonic-gate int hby = by;
91*7c478bd9Sstevel@tonic-gate
92*7c478bd9Sstevel@tonic-gate w_y16 = win ->_y16;
93*7c478bd9Sstevel@tonic-gate o_y16 = orig->_y16;
94*7c478bd9Sstevel@tonic-gate
95*7c478bd9Sstevel@tonic-gate for (y = 0; y < num_lines; y++, hby++)
96*7c478bd9Sstevel@tonic-gate w_y16[y] = o_y16[hby] + bx;
97*7c478bd9Sstevel@tonic-gate }
98*7c478bd9Sstevel@tonic-gate #endif /* _VR3_COMPAT_CODE */
99*7c478bd9Sstevel@tonic-gate
100*7c478bd9Sstevel@tonic-gate for (y = 0; y < num_lines; y++, by++)
101*7c478bd9Sstevel@tonic-gate w_y[y] = o_y[by] + bx;
102*7c478bd9Sstevel@tonic-gate
103*7c478bd9Sstevel@tonic-gate win->_yoffset = orig->_yoffset;
104*7c478bd9Sstevel@tonic-gate
105*7c478bd9Sstevel@tonic-gate /* update descendant number of ancestors */
106*7c478bd9Sstevel@tonic-gate win->_parent = orig;
107*7c478bd9Sstevel@tonic-gate for (par = win->_parent; par != NULL; par = par->_parent)
108*7c478bd9Sstevel@tonic-gate par->_ndescs += 1;
109*7c478bd9Sstevel@tonic-gate
110*7c478bd9Sstevel@tonic-gate done:
111*7c478bd9Sstevel@tonic-gate return (win);
112*7c478bd9Sstevel@tonic-gate }
113