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