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 (c) 1995-1998 by Sun Microsystems, Inc.
24 * All rights reserved.
25 */
26
27 #pragma ident "%Z%%M% %I% %E% SMI"
28
29 /* LINTLIBRARY */
30
31 /*
32 * prefresh.c
33 *
34 * XCurses Library
35 *
36 * Copyright 1990, 1995 by Mortice Kern Systems Inc. All rights reserved.
37 *
38 */
39
40 #ifdef M_RCSID
41 #ifndef lint
42 static char rcsID[] =
43 "$Header: /team/ps/sun_xcurses/archive/local_changes/xcurses/src/lib/"
44 "libxcurses/src/libc/xcurses/rcs/prefresh.c 1.4 1998/06/03 16:06:14 "
45 "cbates Exp $";
46 #endif
47 #endif
48
49 #include <private.h>
50
51 /*
52 * Update newscr with the given pad then display to the terminal.
53 */
54 int
prefresh(WINDOW * w,int pminr,int pminc,int sminr,int sminc,int smaxr,int smaxc)55 prefresh(WINDOW *w, int pminr, int pminc, int sminr, int sminc,
56 int smaxr, int smaxc)
57 {
58 int code;
59
60 code = pnoutrefresh(w, pminr, pminc, sminr, sminc, smaxr, smaxc);
61 if (code == OK)
62 code = doupdate();
63
64 return (code);
65 }
66
67 /*
68 * Update newscr with the given pad. This allows newscr to
69 * be updated with several windows before doing a doupdate().
70 *
71 * MKS extension permits windows that are not pads to be refreshed
72 * using this function.
73 */
74 int
pnoutrefresh(WINDOW * pad,int pminr,int pminc,int sminr,int sminc,int smaxr,int smaxc)75 pnoutrefresh(WINDOW *pad, int pminr, int pminc, int sminr, int sminc,
76 int smaxr, int smaxc)
77 {
78 WINDOW *ns;
79 int row, dy, dx;
80
81 ns = __m_screen->_newscr;
82
83 /* Adjust regions to be within bounds. */
84 if (pminr < 0)
85 pminr = 0;
86 if (pminc < 0)
87 pminc = 0;
88 if (sminr < 0)
89 sminr = 0;
90 if (sminc < 0)
91 sminc = 0;
92 if (ns->_maxy <= smaxr)
93 smaxr = ns->_maxy-1;
94 if (ns->_maxx <= smaxc)
95 smaxc = ns->_maxx-1;
96
97 if (pad->_maxy <= pminr || pad->_maxx <= pminc ||
98 smaxr < sminr || smaxc < sminc)
99 return (ERR);
100
101 /* Clear displayed region. */
102 for (row = sminr; row < smaxr; ++row) {
103 (void) __m_cc_erase(ns, row, sminc, row, smaxc);
104 }
105
106 /*
107 * Determine the proper maximums in case smaxr and smaxc mapped
108 * beyond the bottom and right-hand edges of the pad.
109 */
110 if (pad->_maxx <= pminc + smaxc-sminc + 1)
111 smaxc = sminc + pad->_maxx - 1 - pminc;
112 if (pad->_maxy <= pminr + smaxr-sminr + 1)
113 smaxr = sminr + pad->_maxy - 1 - pminr;
114
115 /* Remember refresh region (inclusive). */
116 pad->_refy = (short) pminr;
117 pad->_refx = (short) pminc;
118 pad->_sminy = (short) sminr;
119 pad->_sminx = (short) sminc;
120 pad->_smaxy = (short) smaxr;
121 pad->_smaxx = (short) smaxc;
122
123 (void) copywin(pad, ns, pminr, pminc, sminr, sminc, smaxr, smaxc, 0);
124
125 /* Last refreshed window controls W_LEAVE_CURSOR flag. */
126 ns->_flags &= ~W_LEAVE_CURSOR;
127 ns->_flags |= pad->_flags &
128 (W_CLEAR_WINDOW | W_REDRAW_WINDOW | W_LEAVE_CURSOR);
129 pad->_flags &= ~(W_CLEAR_WINDOW | W_REDRAW_WINDOW);
130
131 /* Figure out where to leave the cursor. */
132 dy = pad->_cury - pminr + pad->_begy;
133 dx = pad->_curx - pminc + pad->_begx;
134
135 ns->_cury = (dy < 0) ? 0 :
136 ((ns->_maxy <= dy) ? ns->_maxy - 1 : (short) dy);
137 ns->_curx = (dx < 0) ? 0 :
138 ((ns->_maxx <= dx) ? ns->_maxx - 1 : (short) dx);
139
140 return (OK);
141 }
142