src/share/classes/java/awt/Transparency.java

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   1 /*
   2  * Copyright (c) 1997, 1999, 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 
  26 package java.awt;
  27 
  28 import javax.tools.annotation.GenerateNativeHeader;
  29 
  30 /**
  31  * The <code>Transparency</code> interface defines the common transparency
  32  * modes for implementing classes.
  33  */
  34 /* No native methods here, but the constants are needed in the supporting JNI code */
  35 @GenerateNativeHeader
  36 public interface Transparency {
  37 
  38     /**
  39      * Represents image data that is guaranteed to be completely opaque,
  40      * meaning that all pixels have an alpha value of 1.0.
  41      */
  42     public final static int OPAQUE            = 1;
  43 
  44     /**
  45      * Represents image data that is guaranteed to be either completely
  46      * opaque, with an alpha value of 1.0, or completely transparent,
  47      * with an alpha value of 0.0.
  48      */
  49     public final static int BITMASK = 2;
  50 
  51     /**
  52      * Represents image data that contains or might contain arbitrary
  53      * alpha values between and including 0.0 and 1.0.
  54      */
  55     public final static int TRANSLUCENT        = 3;
  56 
  57     /**
  58      * Returns the type of this <code>Transparency</code>.
  59      * @return the field type of this <code>Transparency</code>, which is
  60      *          either OPAQUE, BITMASK or TRANSLUCENT.
  61      */
  62     public int getTransparency();
  63 }
   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
   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 
  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 }