| /* |
| * Copyright (c) 1998, 2008, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * 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. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * 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). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* ******************************************************************** |
| ********************************************************************** |
| ********************************************************************** |
| *** 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| *** As an unpublished work pursuant to Title 17 of the United *** |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.geom.Rectangle2D; |
| import java.awt.image.RenderedImage; |
| |
| /** |
| * ContextualRenderedImageFactory provides an interface for the |
| * functionality that may differ between instances of |
| * RenderableImageOp. Thus different operations on RenderableImages |
| * may be performed by a single class such as RenderedImageOp through |
| * the use of multiple instances of ContextualRenderedImageFactory. |
| * The name ContextualRenderedImageFactory is commonly shortened to |
| * "CRIF." |
| * |
| * <p> All operations that are to be used in a rendering-independent |
| * chain must implement ContextualRenderedImageFactory. |
| * |
| * <p> Classes that implement this interface must provide a |
| * constructor with no arguments. |
| */ |
| public interface ContextualRenderedImageFactory extends RenderedImageFactory { |
| |
| /** |
| * Maps the operation's output RenderContext into a RenderContext |
| * for each of the operation's sources. This is useful for |
| * operations that can be expressed in whole or in part simply as |
| * alterations in the RenderContext, such as an affine mapping, or |
| * operations that wish to obtain lower quality renderings of |
| * their sources in order to save processing effort or |
| * transmission bandwith. Some operations, such as blur, can also |
| * use this mechanism to avoid obtaining sources of higher quality |
| * than necessary. |
| * |
| * @param i the index of the source image. |
| * @param renderContext the RenderContext being applied to the operation. |
| * @param paramBlock a ParameterBlock containing the operation's |
| * sources and parameters. |
| * @param image the RenderableImage being rendered. |
| * @return a <code>RenderContext</code> for |
| * the source at the specified index of the parameters |
| * Vector contained in the specified ParameterBlock. |
| */ |
| RenderContext mapRenderContext(int i, |
| RenderContext renderContext, |
| ParameterBlock paramBlock, |
| RenderableImage image); |
| |
| /** |
| * Creates a rendering, given a RenderContext and a ParameterBlock |
| * containing the operation's sources and parameters. The output |
| * is a RenderedImage that takes the RenderContext into account to |
| * determine its dimensions and placement on the image plane. |
| * This method houses the "intelligence" that allows a |
| * rendering-independent operation to adapt to a specific |
| * RenderContext. |
| * |
| * @param renderContext The RenderContext specifying the rendering |
| * @param paramBlock a ParameterBlock containing the operation's |
| * sources and parameters |
| * @return a <code>RenderedImage</code> from the sources and parameters |
| * in the specified ParameterBlock and according to the |
| * rendering instructions in the specified RenderContext. |
| */ |
| RenderedImage create(RenderContext renderContext, |
| ParameterBlock paramBlock); |
| |
| /** |
| * Returns the bounding box for the output of the operation, |
| * performed on a given set of sources, in rendering-independent |
| * space. The bounds are returned as a Rectangle2D, that is, an |
| * axis-aligned rectangle with floating-point corner coordinates. |
| * |
| * @param paramBlock a ParameterBlock containing the operation's |
| * sources and parameters. |
| * @return a Rectangle2D specifying the rendering-independent |
| * bounding box of the output. |
| */ |
| Rectangle2D getBounds2D(ParameterBlock paramBlock); |
| |
| /** |
| * Gets the appropriate instance of the property specified by the name |
| * parameter. This method must determine which instance of a property to |
| * return when there are multiple sources that each specify the property. |
| * |
| * @param paramBlock a ParameterBlock containing the operation's |
| * sources and parameters. |
| * @param name a String naming the desired property. |
| * @return an object reference to the value of the property requested. |
| */ |
| Object getProperty(ParameterBlock paramBlock, String name); |
| |
| /** |
| * Returns a list of names recognized by getProperty. |
| * @return the list of property names. |
| */ |
| String[] getPropertyNames(); |
| |
| /** |
| * Returns true if successive renderings (that is, calls to |
| * create(RenderContext, ParameterBlock)) with the same arguments |
| * may produce different results. This method may be used to |
| * determine whether an existing rendering may be cached and |
| * reused. It is always safe to return true. |
| * @return <code>true</code> if successive renderings with the |
| * same arguments might produce different results; |
| * <code>false</code> otherwise. |
| */ |
| boolean isDynamic(); |
| } |