1 /*
2 * Copyright (c) 1997, 2000, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25 package javax.swing;
26
27
28 /**
29 * A collection of constants generally used for positioning and orienting
30 * components on the screen.
31 *
32 * @author Jeff Dinkins
33 * @author Ralph Kar (orientation support)
34 */
35 public interface SwingConstants {
36
37 /**
38 * The central position in an area. Used for
39 * both compass-direction constants (NORTH, etc.)
40 * and box-orientation constants (TOP, etc.).
41 */
42 public static final int CENTER = 0;
43
44 //
45 // Box-orientation constant used to specify locations in a box.
46 //
47 /**
48 * Box-orientation constant used to specify the top of a box.
49 */
50 public static final int TOP = 1;
51 /**
52 * Box-orientation constant used to specify the left side of a box.
53 */
54 public static final int LEFT = 2;
55 /**
56 * Box-orientation constant used to specify the bottom of a box.
57 */
58 public static final int BOTTOM = 3;
59 /**
60 * Box-orientation constant used to specify the right side of a box.
61 */
62 public static final int RIGHT = 4;
63
64 //
65 // Compass-direction constants used to specify a position.
66 //
67 /**
68 * Compass-direction North (up).
69 */
70 public static final int NORTH = 1;
71 /**
72 * Compass-direction north-east (upper right).
73 */
74 public static final int NORTH_EAST = 2;
75 /**
76 * Compass-direction east (right).
77 */
78 public static final int EAST = 3;
79 /**
80 * Compass-direction south-east (lower right).
81 */
82 public static final int SOUTH_EAST = 4;
83 /**
84 * Compass-direction south (down).
85 */
86 public static final int SOUTH = 5;
87 /**
88 * Compass-direction south-west (lower left).
89 */
90 public static final int SOUTH_WEST = 6;
91 /**
92 * Compass-direction west (left).
93 */
94 public static final int WEST = 7;
95 /**
96 * Compass-direction north west (upper left).
97 */
98 public static final int NORTH_WEST = 8;
99
100 //
101 // These constants specify a horizontal or
102 // vertical orientation. For example, they are
103 // used by scrollbars and sliders.
104 //
105 /** Horizontal orientation. Used for scrollbars and sliders. */
106 public static final int HORIZONTAL = 0;
107 /** Vertical orientation. Used for scrollbars and sliders. */
108 public static final int VERTICAL = 1;
109
110 //
111 // Constants for orientation support, since some languages are
112 // left-to-right oriented and some are right-to-left oriented.
113 // This orientation is currently used by buttons and labels.
114 //
115 /**
116 * Identifies the leading edge of text for use with left-to-right
117 * and right-to-left languages. Used by buttons and labels.
118 */
119 public static final int LEADING = 10;
120 /**
121 * Identifies the trailing edge of text for use with left-to-right
122 * and right-to-left languages. Used by buttons and labels.
123 */
124 public static final int TRAILING = 11;
125 /**
126 * Identifies the next direction in a sequence.
127 *
128 * @since 1.4
129 */
130 public static final int NEXT = 12;
131
132 /**
133 * Identifies the previous direction in a sequence.
134 *
135 * @since 1.4
136 */
137 public static final int PREVIOUS = 13;
138 }