Source for java.awt.Transparency

   1: /* Transparency.java -- common transparency modes in graphics
   2:    Copyright (C) 2000, 2002, 2005 Free Software Foundation
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
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  34: this exception to your version of the library, but you are not
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  36: exception statement from your version. */
  37: 
  38: package java.awt;
  39: 
  40: /**
  41:  * A common transparency mode for layering graphics.
  42:  *
  43:  * @author Warren Levy (warrenl@cygnus.com)
  44:  * @since 1.1
  45:  * @status updated to 1.4
  46:  */
  47: public interface Transparency
  48: {
  49:   /** Image data which is completely opaque, for an alpha value of 1.0. */
  50:   int OPAQUE = 1;
  51: 
  52:   /**
  53:    * Image data which is either completely opaque or transparent, for an
  54:    * exact integer alpha value.
  55:    */
  56:   int BITMASK = 2;
  57: 
  58:   /** Image data which is translucent, for a non-integer alpha value. */
  59:   int TRANSLUCENT = 3;
  60: 
  61:   /**
  62:    * Return the transparency type.
  63:    *
  64:    * @return One of {@link #OPAQUE}, {@link #BITMASK}, or {@link #TRANSLUCENT}.
  65:    */
  66:   int getTransparency();
  67: } // interface Transparency