01 /*
02 * Copyright 1997-1999 Sun Microsystems, Inc. All Rights Reserved.
03 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04 *
05 * This code is free software; you can redistribute it and/or modify it
06 * under the terms of the GNU General Public License version 2 only, as
07 * published by the Free Software Foundation. Sun designates this
08 * particular file as subject to the "Classpath" exception as provided
09 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
25
26 package java.awt;
27
28 /**
29 * The <code>Transparency</code> interface defines the common transparency
30 * modes for implementing classes.
31 * @version 1.27, 05/05/07
32 */
33 public interface Transparency {
34
35 /**
36 * Represents image data that is guaranteed to be completely opaque,
37 * meaning that all pixels have an alpha value of 1.0.
38 */
39 public final static int OPAQUE = 1;
40
41 /**
42 * Represents image data that is guaranteed to be either completely
43 * opaque, with an alpha value of 1.0, or completely transparent,
44 * with an alpha value of 0.0.
45 */
46 public final static int BITMASK = 2;
47
48 /**
49 * Represents image data that contains or might contain arbitrary
50 * alpha values between and including 0.0 and 1.0.
51 */
52 public final static int TRANSLUCENT = 3;
53
54 /**
55 * Returns the type of this <code>Transparency</code>.
56 * @return the field type of this <code>Transparency</code>, which is
57 * either OPAQUE, BITMASK or TRANSLUCENT.
58 */
59 public int getTransparency();
60 }
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