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, by Sun Microsystems, Inc.
24 * All rights reserved.
25 */
26
27 /*
28 * prefresh.c
29 *
30 * XCurses Library
31 *
32 * Copyright 1990, 1995 by Mortice Kern Systems Inc. All rights reserved.
33 *
34 */
35
36 #ifdef M_RCSID
37 #ifndef lint
38 static char rcsID[] = "$Header: /rd/src/libc/xcurses/rcs/prefresh.c 1.3 1995/06/20 14:34:10 ant Exp $";
39 #endif
40 #endif
41
42 #include <private.h>
43
44 /*f
45 * Update newscr with the given pad then display to the terminal.
46 */
47 int
prefresh(w,pminr,pminc,sminr,sminc,smaxr,smaxc)48 prefresh(w, pminr, pminc, sminr, sminc, smaxr, smaxc)
49 WINDOW *w;
50 int pminr, pminc, sminr, sminc, smaxr, smaxc;
51 {
52 int code;
53
54 #ifdef M_CURSES_TRACE
55 __m_trace(
56 "prefresh(%p, %d, %d, %d, %d, %d, %d)",
57 w, pminr, pminc, sminr, sminc, smaxr, smaxc
58 );
59 #endif
60
61 code = pnoutrefresh(w, pminr, pminc, sminr, sminc, smaxr, smaxc);
62 if (code == OK)
63 code = doupdate();
64
65 return __m_return_code("prefresh", code);
66 }
67
68 /*f
69 * Update newscr with the given pad. This allows newscr to
70 * be updated with several windows before doing a doupdate().
71 *
72 * MKS extension permits windows that are not pads to be refreshed
73 * using this function.
74 */
75 int
pnoutrefresh(pad,pminr,pminc,sminr,sminc,smaxr,smaxc)76 pnoutrefresh(pad, pminr, pminc, sminr, sminc, smaxr, smaxc)
77 WINDOW *pad;
78 int pminr, pminc, sminr, sminc, smaxr, smaxc;
79 {
80 WINDOW *ns;
81 int row, dy, dx;
82
83 #ifdef M_CURSES_TRACE
84 __m_trace(
85 "pnoutrefresh(%p, %d, %d, %d, %d, %d, %d)",
86 pad, pminr, pminc, sminr, sminc, smaxr, smaxc
87 );
88 #endif
89
90 ns = __m_screen->_newscr;
91
92 /* Adjust regions to be within bounds. */
93 if (pminr < 0)
94 pminr = 0;
95 if (pminc < 0)
96 pminc = 0;
97 if (sminr < 0)
98 sminr = 0;
99 if (sminc < 0)
100 sminc = 0;
101 if (ns->_maxy <= smaxr)
102 smaxr = ns->_maxy-1;
103 if (ns->_maxx <= smaxc)
104 smaxr = ns->_maxx-1;
105
106 if (pad->_maxy <= pminr || pad->_maxx <= pminc
107 || smaxr < sminr || smaxc < sminc)
108 return __m_return_code("pnoutrefresh", ERR);
109
110 /* Clear displayed region. */
111 for (row = sminr; row <= smaxr; ++row)
112 (void) __m_cc_erase(ns, row, sminc, row, smaxc);
113
114 /* Determine the proper maximums in case smaxr and smaxc mapped
115 * beyond the bottom and right-hand edges of the pad.
116 */
117 if (pad->_maxx <= pminc + smaxc-sminc+1)
118 smaxc = sminc + pad->_maxx - 1 - pminc;
119 if (pad->_maxy <= pminr + smaxr-sminr+1)
120 smaxr = sminr + pad->_maxy - 1 - pminr;
121
122 /* Remember refresh region (inclusive). */
123 pad->_refy = (short) pminr;
124 pad->_refx = (short) pminc;
125 pad->_sminy = (short) sminr;
126 pad->_sminx = (short) sminc;
127 pad->_smaxy = (short) smaxr;
128 pad->_smaxx = (short) smaxc;
129
130 (void) copywin(pad, ns, pminr, pminc, sminr, sminc, smaxr, smaxc, 0);
131
132 /* Last refreshed window controls W_LEAVE_CURSOR flag. */
133 ns->_flags &= ~W_LEAVE_CURSOR;
134 ns->_flags |= pad->_flags
135 & (W_CLEAR_WINDOW | W_REDRAW_WINDOW | W_LEAVE_CURSOR);
136 pad->_flags &= ~(W_CLEAR_WINDOW | W_REDRAW_WINDOW);
137
138 /* Figure out where to leave the cursor. */
139 dy = pad->_cury - pminr + pad->_begy;
140 dx = pad->_curx - pminc + pad->_begx;
141
142 ns->_cury = dy < 0 ? 0 : ns->_maxy <= dy ? ns->_maxy-1 : dy;
143 ns->_curx = dx < 0 ? 0 : ns->_maxx <= dx ? ns->_maxx-1 : dx;
144
145 return __m_return_code("pnoutrefresh", OK);
146 }
147