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 * @since 1.2
35 */
36 public interface SwingConstants {
37
38 /**
39 * The central position in an area. Used for
40 * both compass-direction constants (NORTH, etc.)
41 * and box-orientation constants (TOP, etc.).
42 */
43 public static final int CENTER = 0;
44
45 //
46 // Box-orientation constant used to specify locations in a box.
47 //
48 /**
49 * Box-orientation constant used to specify the top of a box.
50 */
51 public static final int TOP = 1;
52 /**
53 * Box-orientation constant used to specify the left side of a box.
54 */
55 public static final int LEFT = 2;
56 /**
57 * Box-orientation constant used to specify the bottom of a box.
58 */
59 public static final int BOTTOM = 3;
60 /**
61 * Box-orientation constant used to specify the right side of a box.
62 */
63 public static final int RIGHT = 4;
64
65 //
66 // Compass-direction constants used to specify a position.
67 //
68 /**
69 * Compass-direction North (up).
70 */
71 public static final int NORTH = 1;
72 /**
73 * Compass-direction north-east (upper right).
74 */
75 public static final int NORTH_EAST = 2;
76 /**
77 * Compass-direction east (right).
78 */
79 public static final int EAST = 3;
80 /**
81 * Compass-direction south-east (lower right).
82 */
83 public static final int SOUTH_EAST = 4;
84 /**
85 * Compass-direction south (down).
86 */
87 public static final int SOUTH = 5;
88 /**
89 * Compass-direction south-west (lower left).
90 */
91 public static final int SOUTH_WEST = 6;
92 /**
93 * Compass-direction west (left).
94 */
95 public static final int WEST = 7;
96 /**
97 * Compass-direction north west (upper left).
98 */
99 public static final int NORTH_WEST = 8;
100
101 //
102 // These constants specify a horizontal or
103 // vertical orientation. For example, they are
104 // used by scrollbars and sliders.
105 //
106 /** Horizontal orientation. Used for scrollbars and sliders. */
107 public static final int HORIZONTAL = 0;
108 /** Vertical orientation. Used for scrollbars and sliders. */
109 public static final int VERTICAL = 1;
110
111 //
112 // Constants for orientation support, since some languages are
113 // left-to-right oriented and some are right-to-left oriented.
114 // This orientation is currently used by buttons and labels.
115 //
116 /**
117 * Identifies the leading edge of text for use with left-to-right
118 * and right-to-left languages. Used by buttons and labels.
119 */
120 public static final int LEADING = 10;
121 /**
122 * Identifies the trailing edge of text for use with left-to-right
123 * and right-to-left languages. Used by buttons and labels.
124 */
125 public static final int TRAILING = 11;
126 /**
127 * Identifies the next direction in a sequence.
128 *
129 * @since 1.4
130 */
131 public static final int NEXT = 12;
132
133 /**
134 * Identifies the previous direction in a sequence.
135 *
136 * @since 1.4
137 */
138 public static final int PREVIOUS = 13;
139 }