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JDK8/Java8源码在线阅读 / java / awt / image / renderable / RenderedImageFactory.java
/*
 * Copyright (c) 1998, 2008, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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/* ********************************************************************
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 *** COPYRIGHT (c) Eastman Kodak Company, 1997                      ***
 *** As  an unpublished  work pursuant to Title 17 of the United    ***
 *** States Code.  All rights reserved.                             ***
 **********************************************************************
 **********************************************************************
 **********************************************************************/

package java.awt.image.renderable;
import java.awt.image.RenderedImage;
import java.awt.RenderingHints;

/**
 * The RenderedImageFactory interface (often abbreviated RIF) is
 * intended to be implemented by classes that wish to act as factories
 * to produce different renderings, for example by executing a series
 * of BufferedImageOps on a set of sources, depending on a specific
 * set of parameters, properties, and rendering hints.
 */
public interface RenderedImageFactory {

  /**
   * Creates a RenderedImage representing the results of an imaging
   * operation (or chain of operations) for a given ParameterBlock and
   * RenderingHints.  The RIF may also query any source images
   * referenced by the ParameterBlock for their dimensions,
   * SampleModels, properties, etc., as necessary.
   *
   * <p> The create() method can return null if the
   * RenderedImageFactory is not capable of producing output for the
   * given set of source images and parameters.  For example, if a
   * RenderedImageFactory is only capable of performing a 3x3
   * convolution on single-banded image data, and the source image has
   * multiple bands or the convolution Kernel is 5x5, null should be
   * returned.
   *
   * <p> Hints should be taken into account, but can be ignored.
   * The created RenderedImage may have a property identified
   * by the String HINTS_OBSERVED to indicate which RenderingHints
   * were used to create the image.  In addition any RenderedImages
   * that are obtained via the getSources() method on the created

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