/*
* Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* 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.Raster;
import java.awt.image.ColorModel;
/**
* The <code>PaintContext</code> interface defines the encapsulated
* and optimized environment to generate color patterns in device
* space for fill or stroke operations on a
* {@link Graphics2D}. The <code>PaintContext</code> provides
* the necessary colors for <code>Graphics2D</code> operations in the
* form of a {@link Raster} associated with a {@link ColorModel}.
* The <code>PaintContext</code> maintains state for a particular paint
* operation. In a multi-threaded environment, several
* contexts can exist simultaneously for a single {@link Paint} object.
* @see Paint
*/
public interface PaintContext {
/**
* Releases the resources allocated for the operation.
*/
public void dispose();
/**
* Returns the <code>ColorModel</code> of the output. Note that
* this <code>ColorModel</code> might be different from the hint
* specified in the
* {@link Paint#createContext(ColorModel, Rectangle, Rectangle2D,
AffineTransform, RenderingHints) createContext} method of
* <code>Paint</code>. Not all <code>PaintContext</code> objects are
* capable of generating color patterns in an arbitrary
* <code>ColorModel</code>.
* @return the <code>ColorModel</code> of the output.
*/
ColorModel getColorModel();
/**
* Returns a <code>Raster</code> containing the colors generated for
* the graphics operation.
* @param x the x coordinate of the area in device space
* for which colors are generated.
* @param y the y coordinate of the area in device space
* for which colors are generated.
* @param w the width of the area in device space
* @param h the height of the area in device space
* @return a <code>Raster</code> representing the specified
* rectangular area and containing the colors generated for
* the graphics operation.
*/
Raster getRaster(int x,
int y,
int w,
int h);
}