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* Copyright ( c ) 1997 , 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 .
*
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*/
package java.awt;
import java.awt.image.ColorModel;
import java.awt.geom.AffineTransform;
import java.awt.geom.Rectangle2D;
/**
* This { @ code Paint } interface defines how color patterns
* can be generated for { @ link Graphics2D } operations . A class
* implementing the { @ code Paint } interface is added to the
* { @ code Graphics2D } context in order to define the color
* pattern used by the { @ code draw } and { @ code fill } methods .
* < p >
* Instances of classes implementing { @ code Paint } must be
* read - only because the { @ code Graphics2D } does not clone
* these objects when they are set as an attribute with the
* { @ code setPaint } method or when the { @ code Graphics2D }
* object is itself cloned .
* @ see PaintContext
* @ see Color
* @ see GradientPaint
* @ see TexturePaint
* @ see Graphics2D # setPaint
* @ version 1 . 36 , 06 / 05 / 07
*/
public interface Paint extends Transparency {
/**
* Creates and returns a { @ link PaintContext } used to
* generate the color pattern .
* The arguments to this method convey additional information
* about the rendering operation that may be
* used or ignored on various implementations of the { @ code Paint } interface .
* A caller must pass non - { @ code null } values for all of the arguments
* except for the { @ code ColorModel } argument which may be { @ code null } to
* indicate that no specific { @ code ColorModel } type is preferred .
* Implementations of the { @ code Paint } interface are allowed to use or ignore
* any of the arguments as makes sense for their function , and are
* not constrained to use the specified { @ code ColorModel } for the returned
* { @ code PaintContext } , even if it is not { @ code null } .
* Implementations are allowed to throw { @ code NullPointerException } for
* any { @ code null } argument other than the { @ code ColorModel } argument ,
* but are not required to do so .
*
* @ param cm the preferred { @ link ColorModel } which represents the most convenient
* format for the caller to receive the pixel data , or { @ code null }
* if there is no preference .
* @ param deviceBounds the device space bounding box
* of the graphics primitive being rendered .
* Implementations of the { @ code Paint } interface
* are allowed to throw { @ code NullPointerException }
* for a { @ code null deviceBounds } .
* @ param userBounds the user space bounding box
* of the graphics primitive being rendered .
* Implementations of the { @ code Paint } interface
* are allowed to throw { @ code NullPointerException }
* for a { @ code null userBounds } .
* @ param xform the { @ link AffineTransform } from user
* space into device space .
* Implementations of the { @ code Paint } interface
* are allowed to throw { @ code NullPointerException }
* for a { @ code null xform } .
* @ param hints the set of hints that the context object can use to
* choose between rendering alternatives .
* Implementations of the { @ code Paint } interface
* are allowed to throw { @ code NullPointerException }
* for a { @ code null hints } .
* @ return the { @ code PaintContext } for
* generating color patterns .
* @ see PaintContext
* @ see ColorModel
* @ see Rectangle
* @ see Rectangle2D
* @ see AffineTransform
* @ see RenderingHints
*/
public PaintContext createContext(ColorModel cm,
Rectangle deviceBounds,
Rectangle2D userBounds,
AffineTransform xform,
RenderingHints hints);
}
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