xref: /illumos-gate/usr/src/lib/libeti/menu/common/post.c (revision 1da57d55)
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 /*	Copyright (c) 1988 AT&T	*/
23 /*	  All Rights Reserved  	*/
24 
25 
26 /*
27  * Copyright (c) 1997, by Sun Mircrosystems, Inc.
28  * All rights reserved.
29  */
30 
31 /*LINTLIBRARY*/
32 
33 #include <sys/types.h>
34 #include "private.h"
35 
36 void
_post_item(MENU * m,ITEM * k)37 _post_item(MENU *m, ITEM *k)
38 {
39 	int foreon = FALSE;
40 	int backon = FALSE;
41 	int greyon = FALSE;
42 	chtype c;
43 	int i;
44 
45 	/* Display the mark region of the item */
46 
47 	if (!Selectable(k)) {
48 		(void) wattron(Win(m), Grey(m));
49 		greyon = TRUE;
50 		for (i = Marklen(m); i > 0; i--) {
51 			(void) waddch(Win(m), ' ');
52 		}
53 	} else {
54 		if (Value(k) || k == Current(m)) {
55 			(void) wattron(Win(m), Fore(m));
56 			foreon = TRUE;
57 		} else {
58 			(void) wattron(Win(m), Back(m));
59 			backon = TRUE;
60 		}
61 
62 		/* Display the mark */
63 		if (Value(k) || (OneValue(m) && k == Current(m))) {
64 			if (Marklen(m)) {
65 				(void) waddstr(Win(m), Mark(m));
66 			}
67 		} else {
68 			for (i = Marklen(m); i > 0; i--) {
69 				(void) waddch(Win(m), ' ');
70 			}
71 		}
72 	}
73 
74 	/* Display the name */
75 
76 	(void) waddnstr(Win(m), Name(k), MaxName(m));
77 	if (ShowDesc(m) && MaxDesc(m) != 0) {
78 		c = Pad(m);
79 	} else {
80 		c = ' ';
81 	}
82 	for (i = MaxName(m) - NameLen(k); i > 0; i--) {
83 		(void) waddch(Win(m), c);
84 	}
85 
86 	/* Display the description */
87 
88 	if (ShowDesc(m) && MaxDesc(m) != 0) {
89 		(void) waddch(Win(m), Pad(m));
90 		if (DescriptionLen(k) != 0) {
91 			(void) waddstr(Win(m), Description(k));
92 		}
93 		for (i = MaxDesc(m) - DescriptionLen(k); i > 0; i--) {
94 			(void) waddch(Win(m), ' ');
95 		}
96 	}
97 	if (foreon) {
98 		(void) wattroff(Win(m), Fore(m));
99 	}
100 	if (backon) {
101 		(void) wattroff(Win(m), Back(m));
102 	}
103 	if (greyon) {
104 		(void) wattroff(Win(m), Grey(m));
105 	}
106 }
107 
108 void
_move_post_item(MENU * m,ITEM * k)109 _move_post_item(MENU *m, ITEM *k)
110 {
111 	(void) wmove(Win(m), Y(k), X(k) * (Itemlen(m)+1));
112 	_post_item(m, k);
113 }
114 
115 int
unpost_menu(MENU * m)116 unpost_menu(MENU *m)
117 {
118 	if (!m) {
119 		return (E_BAD_ARGUMENT);
120 	}
121 	if (Indriver(m)) {
122 		return (E_BAD_STATE);
123 	}
124 	if (!Posted(m)) {
125 		return (E_NOT_POSTED);
126 	}
127 	Iterm(m);
128 	Mterm(m);
129 	(void) werase(US(m));
130 	wsyncup(US(m));
131 	(void) delwin(Sub(m));
132 	Sub(m) = (WINDOW *) NULL;
133 	(void) delwin(Win(m));
134 	Win(m) = (WINDOW *) NULL;
135 	ResetPost(m);
136 	return (E_OK);
137 }
138 
139 /*
140  * This routine draws the item indicated by oldcur first and then
141  * draws the item indicated by Current.  This will have the affect
142  * of unselecting the first item and selecting the next.
143  */
144 void
_movecurrent(MENU * m,ITEM * oldcur)145 _movecurrent(MENU *m, ITEM *oldcur)
146 {
147 	if (oldcur != Current(m)) {
148 		_move_post_item(m, oldcur);
149 		_move_post_item(m, Current(m));
150 	}
151 }
152 
153 /*
154  * Draw the entire menu into the super window
155  * This routine assumes all items have been linked and
156  * that the menu is in at least a pre-post state.
157  */
158 
159 void
_draw(MENU * m)160 _draw(MENU *m)
161 {
162 	int k;
163 	ITEM *i, *j;
164 	ITEM *si, *sj;
165 
166 	k = 0;		/* Line number */
167 	i = IthItem(m, 0);
168 	si = Cyclic(m) ? i : (ITEM *) NULL;
169 	do {
170 		(void) wmove(Win(m), k++, 0);
171 		j = i;
172 		sj = Cyclic(m) ? j : (ITEM *) NULL;
173 		do {
174 			_post_item(m, j);
175 			if ((j = Right(j)) != sj) {
176 				(void) waddch(Win(m), ' ');
177 			}
178 		} while (j != sj);
179 	} while ((i = Down(i)) != si);
180 }
181 
182 int
post_menu(MENU * m)183 post_menu(MENU *m)
184 {
185 	ITEM **ip;
186 	int r, c;		/* visible # of rows and cols */
187 
188 	if (!m) {
189 		return (E_BAD_ARGUMENT);
190 	}
191 	if (Indriver(m)) {
192 		return (E_BAD_STATE);
193 	}
194 	if (Posted(m)) {
195 		return (E_POSTED);
196 	}
197 	/* Make sure there is at least one item present */
198 	if (Items(m) && IthItem(m, 0)) {
199 		getmaxyx(US(m), r, c);
200 
201 		/* Make sure the menu fits into the window horizontally */
202 		if (c < Width(m) || r < Height(m)) {
203 			return (E_NO_ROOM);
204 		}
205 
206 		/* Create the menu window and derived windows */
207 		if ((Win(m) = newwin(Rows(m), Width(m), 0, 0)) ==
208 		    (WINDOW *) NULL) {
209 			return (E_SYSTEM_ERROR);
210 		}
211 
212 		/*
213 		 * Take the minimum of the height of the menu (Height), the
214 		 * physical height of the window (r), and the number of rows
215 		 * in the menu (Rows).
216 		 */
217 		r = min(min(r, Rows(m)), Height(m));
218 
219 		if ((Sub(m) = derwin(Win(m), r, Width(m), 0, 0)) ==
220 		    (WINDOW *)  NULL) {
221 			return (E_SYSTEM_ERROR);
222 		}
223 
224 		/* If needed, link all items in the menu */
225 		if (LinkNeeded(m)) {
226 			_link_items(m);
227 		}
228 
229 		SetPost(m);
230 
231 		/* If only one value can be set then unset all values */
232 		/* to start. */
233 		if (OneValue(m)) {
234 			for (ip = Items(m); *ip; ip++) {
235 				Value(*ip) = FALSE;
236 			}
237 		}
238 
239 		/* Go do the drawing of the menu */
240 		_draw(m);
241 
242 		Minit(m);
243 		Iinit(m);
244 		_show(m);		/* Display the menu */
245 		return (E_OK);
246 	}
247 	return (E_NOT_CONNECTED);
248 }
249