Home » openjdk-7 » java » awt » [javadoc | source]

    1   /*
    2    * Copyright (c) 1997, 1998, 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.awt.image.Raster;
   29   import java.awt.image.WritableRaster;
   30   
   31   /**
   32    * The <code>CompositeContext</code> interface defines the encapsulated
   33    * and optimized environment for a compositing operation.
   34    * <code>CompositeContext</code> objects maintain state for
   35    * compositing operations.  In a multi-threaded environment, several
   36    * contexts can exist simultaneously for a single {@link Composite}
   37    * object.
   38    * @see Composite
   39    */
   40   
   41   public interface CompositeContext {
   42       /**
   43        * Releases resources allocated for a context.
   44        */
   45       public void dispose();
   46   
   47       /**
   48        * Composes the two source {@link Raster} objects and
   49        * places the result in the destination
   50        * {@link WritableRaster}.  Note that the destination
   51        * can be the same object as either the first or second
   52        * source. Note that <code>dstIn</code> and
   53        * <code>dstOut</code> must be compatible with the
   54        * <code>dstColorModel</code> passed to the
   55        * {@link Composite#createContext(java.awt.image.ColorModel, java.awt.image.ColorModel, java.awt.RenderingHints) createContext}
   56        * method of the <code>Composite</code> interface.
   57        * @param src the first source for the compositing operation
   58        * @param dstIn the second source for the compositing operation
   59        * @param dstOut the <code>WritableRaster</code> into which the
   60        * result of the operation is stored
   61        * @see Composite
   62        */
   63       public void compose(Raster src,
   64                           Raster dstIn,
   65                           WritableRaster dstOut);
   66   
   67   
   68   }

Home » openjdk-7 » java » awt » [javadoc | source]