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68 lines
2.7 KiB
Java
68 lines
2.7 KiB
Java
/*
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* Copyright (c) 1997, 1998, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package java.awt;
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import java.awt.image.Raster;
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import java.awt.image.WritableRaster;
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/**
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* The {@code CompositeContext} interface defines the encapsulated
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* and optimized environment for a compositing operation.
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* {@code CompositeContext} objects maintain state for
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* compositing operations. In a multi-threaded environment, several
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* contexts can exist simultaneously for a single {@link Composite}
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* object.
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* @see Composite
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*/
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public interface CompositeContext {
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/**
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* Releases resources allocated for a context.
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*/
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public void dispose();
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/**
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* Composes the two source {@link Raster} objects and
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* places the result in the destination
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* {@link WritableRaster}. Note that the destination
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* can be the same object as either the first or second
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* source. Note that {@code dstIn} and
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* {@code dstOut} must be compatible with the
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* {@code dstColorModel} passed to the
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* {@link Composite#createContext(java.awt.image.ColorModel, java.awt.image.ColorModel, java.awt.RenderingHints) createContext}
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* method of the {@code Composite} interface.
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* @param src the first source for the compositing operation
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* @param dstIn the second source for the compositing operation
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* @param dstOut the {@code WritableRaster} into which the
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* result of the operation is stored
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* @see Composite
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*/
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public void compose(Raster src,
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Raster dstIn,
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WritableRaster dstOut);
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}
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