| /* RasterOp.java -- |
| Copyright (C) 2000, 2002, 2004, 2005, 2006, Free Software Foundation |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package java.awt.image; |
| |
| import java.awt.RenderingHints; |
| import java.awt.geom.Point2D; |
| import java.awt.geom.Rectangle2D; |
| |
| /** |
| * An operation that is performed on one raster (the source) producing a new |
| * raster (the destination). |
| */ |
| public interface RasterOp |
| { |
| /** |
| * Performs an operation on the source raster, returning the result in a |
| * writable raster. If <code>dest</code> is <code>null</code>, a new |
| * <code>WritableRaster</code> will be created by calling the |
| * {@link #createCompatibleDestRaster(Raster)} method. If <code>dest</code> |
| * is not <code>null</code>, the result is written to <code>dest</code> then |
| * returned (this avoids creating a new <code>WritableRaster</code> each |
| * time this method is called). |
| * |
| * @param src the source raster. |
| * @param dest the destination raster (<code>null</code> permitted). |
| * |
| * @return The filtered raster. |
| */ |
| WritableRaster filter(Raster src, WritableRaster dest); |
| |
| /** |
| * Returns the bounds of the destination raster on the basis of this |
| * <code>RasterOp</code> being applied to the specified source raster. |
| * |
| * @param src the source raster. |
| * |
| * @return The destination bounds. |
| */ |
| Rectangle2D getBounds2D(Raster src); |
| |
| /** |
| * Returns a raster that can be used by this <code>RasterOp</code> as the |
| * destination raster when operating on the specified source raster. |
| * |
| * @param src the source raster. |
| * |
| * @return A new writable raster that can be used as the destination raster. |
| */ |
| WritableRaster createCompatibleDestRaster(Raster src); |
| |
| /** |
| * Returns the point on the destination raster that corresponds to the given |
| * point on the source raster. |
| * |
| * @param srcPoint the source point. |
| * @param destPoint the destination point (<code>null</code> permitted). |
| * |
| * @return The destination point. |
| */ |
| Point2D getPoint2D(Point2D srcPoint, Point2D destPoint); |
| |
| /** |
| * Returns the rendering hints for this operation. |
| * |
| * @return The rendering hints. |
| */ |
| RenderingHints getRenderingHints(); |
| } |
| |