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1   /*
2    * Copyright (c) 1997, 2013, 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
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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
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19   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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24   */
25  
26  package java.awt;
27  
28  import java.lang.annotation.Native;
29  
30  /**
31   * The <code>Transparency</code> interface defines the common transparency
32   * modes for implementing classes.
33   */
34  public interface Transparency {
35  
36      /**
37       * Represents image data that is guaranteed to be completely opaque,
38       * meaning that all pixels have an alpha value of 1.0.
39       */
40      @Native public final static int OPAQUE            = 1;
41  
42      /**
43       * Represents image data that is guaranteed to be either completely
44       * opaque, with an alpha value of 1.0, or completely transparent,
45       * with an alpha value of 0.0.
46       */
47      @Native public final static int BITMASK = 2;
48  
49      /**
50       * Represents image data that contains or might contain arbitrary
51       * alpha values between and including 0.0 and 1.0.
52       */
53      @Native public final static int TRANSLUCENT        = 3;
54  
55      /**
56       * Returns the type of this <code>Transparency</code>.
57       * @return the field type of this <code>Transparency</code>, which is
58       *          either OPAQUE, BITMASK or TRANSLUCENT.
59       */
60      public int getTransparency();
61  }