1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */
23*0Sstevel@tonic-gate /* All Rights Reserved */
24*0Sstevel@tonic-gate
25*0Sstevel@tonic-gate
26*0Sstevel@tonic-gate /*
27*0Sstevel@tonic-gate * Copyright (c) 1997, by Sun Mircrosystems, Inc.
28*0Sstevel@tonic-gate * All rights reserved.
29*0Sstevel@tonic-gate */
30*0Sstevel@tonic-gate
31*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.6 */
32*0Sstevel@tonic-gate
33*0Sstevel@tonic-gate /*LINTLIBRARY*/
34*0Sstevel@tonic-gate
35*0Sstevel@tonic-gate #include <sys/types.h>
36*0Sstevel@tonic-gate #include "private.h"
37*0Sstevel@tonic-gate
38*0Sstevel@tonic-gate static void
link_col_major(MENU * m)39*0Sstevel@tonic-gate link_col_major(MENU *m)
40*0Sstevel@tonic-gate {
41*0Sstevel@tonic-gate ITEM *i;
42*0Sstevel@tonic-gate int n;
43*0Sstevel@tonic-gate short c, r;
44*0Sstevel@tonic-gate int left, up;
45*0Sstevel@tonic-gate
46*0Sstevel@tonic-gate r = 0;
47*0Sstevel@tonic-gate c = 0;
48*0Sstevel@tonic-gate for (i = IthItem(m, 0), n = 0; i; i = IthItem(m, ++n)) {
49*0Sstevel@tonic-gate X(i) = c;
50*0Sstevel@tonic-gate Y(i) = r;
51*0Sstevel@tonic-gate Left(i) = c ? IthItem(m, n-Rows(m)) : (ITEM *) NULL;
52*0Sstevel@tonic-gate if (n + Rows(m) >= Nitems(m)) {
53*0Sstevel@tonic-gate Right(i) = (ITEM *) NULL;
54*0Sstevel@tonic-gate } else {
55*0Sstevel@tonic-gate Right(i) = IthItem(m, n + Rows(m));
56*0Sstevel@tonic-gate }
57*0Sstevel@tonic-gate Up(i) = r ? IthItem(m, n-1) : (ITEM *) NULL;
58*0Sstevel@tonic-gate Down(i) = (r == Rows(m)-1) ? (ITEM *)0 : IthItem(m, n+1);
59*0Sstevel@tonic-gate if (++r == Rows(m)) {
60*0Sstevel@tonic-gate r = 0;
61*0Sstevel@tonic-gate c += 1;
62*0Sstevel@tonic-gate }
63*0Sstevel@tonic-gate }
64*0Sstevel@tonic-gate if (r) {
65*0Sstevel@tonic-gate Down(IthItem(m, n-1)) = IthItem(m, n - Rows(m));
66*0Sstevel@tonic-gate }
67*0Sstevel@tonic-gate
68*0Sstevel@tonic-gate if (Cyclic(m)) {
69*0Sstevel@tonic-gate /* Set up left and right links at edge of menu */
70*0Sstevel@tonic-gate
71*0Sstevel@tonic-gate r = Rows(m) * (Nitems(m)/Rows(m));
72*0Sstevel@tonic-gate for (n = 0; n < Rows(m); n++) {
73*0Sstevel@tonic-gate left = n + r;
74*0Sstevel@tonic-gate if (left >= Nitems(m)) {
75*0Sstevel@tonic-gate left -= Rows(m);
76*0Sstevel@tonic-gate }
77*0Sstevel@tonic-gate Left(IthItem(m, n)) = IthItem(m, left);
78*0Sstevel@tonic-gate Right(IthItem(m, left)) = IthItem(m, n);
79*0Sstevel@tonic-gate }
80*0Sstevel@tonic-gate
81*0Sstevel@tonic-gate /* Setup up and down links at edge of menu */
82*0Sstevel@tonic-gate
83*0Sstevel@tonic-gate for (n = 0; n < Nitems(m); n += Rows(m)) {
84*0Sstevel@tonic-gate up = n + Rows(m) - 1;
85*0Sstevel@tonic-gate if (up >= Nitems(m)) {
86*0Sstevel@tonic-gate Up(IthItem(m, n)) = IthItem(m, n-1);
87*0Sstevel@tonic-gate } else {
88*0Sstevel@tonic-gate Up(IthItem(m, n)) = IthItem(m, up);
89*0Sstevel@tonic-gate Down(IthItem(m, up)) = IthItem(m, n);
90*0Sstevel@tonic-gate }
91*0Sstevel@tonic-gate }
92*0Sstevel@tonic-gate }
93*0Sstevel@tonic-gate }
94*0Sstevel@tonic-gate
95*0Sstevel@tonic-gate static void
link_row_major(MENU * m)96*0Sstevel@tonic-gate link_row_major(MENU *m)
97*0Sstevel@tonic-gate {
98*0Sstevel@tonic-gate int n;
99*0Sstevel@tonic-gate short c, r;
100*0Sstevel@tonic-gate ITEM *i;
101*0Sstevel@tonic-gate int left, up;
102*0Sstevel@tonic-gate
103*0Sstevel@tonic-gate r = 0;
104*0Sstevel@tonic-gate c = 0;
105*0Sstevel@tonic-gate for (i = IthItem(m, 0), n = 0; i; i = IthItem(m, ++n)) {
106*0Sstevel@tonic-gate X(i) = c;
107*0Sstevel@tonic-gate Y(i) = r;
108*0Sstevel@tonic-gate Left(i) = c ? IthItem(m, n-1) : (ITEM *) NULL;
109*0Sstevel@tonic-gate Right(i) = (c == Cols(m)-1 || n == Nitems(m)-1) ? (ITEM *)0 :
110*0Sstevel@tonic-gate IthItem(m, n+1);
111*0Sstevel@tonic-gate Up(i) = r ? IthItem(m, n-Cols(m)) : (ITEM *) NULL;
112*0Sstevel@tonic-gate
113*0Sstevel@tonic-gate if (n+Cols(m) < Nitems(m)) {
114*0Sstevel@tonic-gate Down(i) = IthItem(m, n + Cols(m));
115*0Sstevel@tonic-gate } else {
116*0Sstevel@tonic-gate if (r == Rows(m)-1) {
117*0Sstevel@tonic-gate /* Down is undefined if this is a complete */
118*0Sstevel@tonic-gate /* last column */
119*0Sstevel@tonic-gate Down(i) = (ITEM *) NULL;
120*0Sstevel@tonic-gate } else {
121*0Sstevel@tonic-gate /* Down is set to last item if the last */
122*0Sstevel@tonic-gate /* column isn't full */
123*0Sstevel@tonic-gate Down(i) = IthItem(m, Nitems(m)-1);
124*0Sstevel@tonic-gate }
125*0Sstevel@tonic-gate }
126*0Sstevel@tonic-gate if (++c == Cols(m)) {
127*0Sstevel@tonic-gate c = 0;
128*0Sstevel@tonic-gate r += 1;
129*0Sstevel@tonic-gate }
130*0Sstevel@tonic-gate }
131*0Sstevel@tonic-gate
132*0Sstevel@tonic-gate if (Cyclic(m)) {
133*0Sstevel@tonic-gate
134*0Sstevel@tonic-gate /* Setup left and right links at edge of menu */
135*0Sstevel@tonic-gate
136*0Sstevel@tonic-gate for (n = 0; n < Nitems(m); n += Cols(m)) {
137*0Sstevel@tonic-gate left = n + Cols(m) - 1;
138*0Sstevel@tonic-gate if (left >= Nitems(m)) {
139*0Sstevel@tonic-gate left = Nitems(m) - 1;
140*0Sstevel@tonic-gate }
141*0Sstevel@tonic-gate Left(IthItem(m, n)) = IthItem(m, left);
142*0Sstevel@tonic-gate Right(IthItem(m, left)) = IthItem(m, n);
143*0Sstevel@tonic-gate }
144*0Sstevel@tonic-gate
145*0Sstevel@tonic-gate /* Setup up and down links at edge of menu */
146*0Sstevel@tonic-gate
147*0Sstevel@tonic-gate r = (Rows(m) - 1) * Cols(m);
148*0Sstevel@tonic-gate for (n = 0; n < Cols(m); n++) {
149*0Sstevel@tonic-gate up = n + r;
150*0Sstevel@tonic-gate
151*0Sstevel@tonic-gate /* If there is an incomplete line below this one */
152*0Sstevel@tonic-gate /* the point to the last item in the menu. */
153*0Sstevel@tonic-gate
154*0Sstevel@tonic-gate if (up >= Nitems(m)) {
155*0Sstevel@tonic-gate Up(IthItem(m, n)) = IthItem(m, Nitems(m)-1);
156*0Sstevel@tonic-gate } else {
157*0Sstevel@tonic-gate Up(IthItem(m, n)) = IthItem(m, up);
158*0Sstevel@tonic-gate Down(IthItem(m, up)) = IthItem(m, n);
159*0Sstevel@tonic-gate }
160*0Sstevel@tonic-gate }
161*0Sstevel@tonic-gate }
162*0Sstevel@tonic-gate }
163*0Sstevel@tonic-gate
164*0Sstevel@tonic-gate void
_link_items(MENU * m)165*0Sstevel@tonic-gate _link_items(MENU *m)
166*0Sstevel@tonic-gate {
167*0Sstevel@tonic-gate if (Items(m) && IthItem(m, 0)) {
168*0Sstevel@tonic-gate ResetLink(m);
169*0Sstevel@tonic-gate if (RowMajor(m)) {
170*0Sstevel@tonic-gate link_row_major(m);
171*0Sstevel@tonic-gate } else {
172*0Sstevel@tonic-gate link_col_major(m);
173*0Sstevel@tonic-gate }
174*0Sstevel@tonic-gate }
175*0Sstevel@tonic-gate }
176