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449 lines
16 KiB
Java
449 lines
16 KiB
Java
/* Copyright (C) 2000, 2002, 2003, 2006, Free Software Foundation
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.awt.image;
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import java.awt.Point;
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import java.awt.Rectangle;
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/**
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* A raster with methods to support updating pixel values.
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*
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* @author Rolf W. Rasmussen (rolfwr@ii.uib.no)
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*/
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public class WritableRaster extends Raster
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{
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/**
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* Creates a new <code>WritableRaster</code>.
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*
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* @param sampleModel the sample model.
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* @param origin the origin.
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*/
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protected WritableRaster(SampleModel sampleModel, Point origin)
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{
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this(sampleModel, sampleModel.createDataBuffer(), origin);
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}
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/**
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* Creates a new <code>WritableRaster</code> instance.
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*
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* @param sampleModel the sample model.
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* @param dataBuffer the data buffer.
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* @param origin the origin.
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*/
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protected WritableRaster(SampleModel sampleModel, DataBuffer dataBuffer,
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Point origin)
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{
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this(sampleModel, dataBuffer,
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new Rectangle(origin != null ? origin.x : 0,
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origin != null ? origin.y : 0,
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sampleModel.getWidth(), sampleModel.getHeight()),
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origin, null);
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}
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/**
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* Creates a new <code>WritableRaster</code> instance.
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*
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* @param sampleModel the sample model.
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* @param dataBuffer the data buffer.
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* @param aRegion the raster's bounds.
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* @param sampleModelTranslate the translation.
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* @param parent the parent.
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*/
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protected WritableRaster(SampleModel sampleModel,
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DataBuffer dataBuffer,
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Rectangle aRegion,
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Point sampleModelTranslate,
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WritableRaster parent)
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{
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super(sampleModel, dataBuffer, aRegion, sampleModelTranslate, parent);
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}
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/**
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* Returns the raster's parent, cast as a {@link WritableRaster}.
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*
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* @return The raster's parent.
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*/
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public WritableRaster getWritableParent()
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{
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return (WritableRaster) getParent();
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}
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/**
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* @param childMinX
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* @param childMinY
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* @return
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*/
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public WritableRaster createWritableTranslatedChild(int childMinX,
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int childMinY)
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{
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return createWritableChild(minX, minY, width, height,
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childMinX, childMinY, null);
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}
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/**
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*
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* @param parentX
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* @param parentY
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* @param w
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* @param h
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* @param childMinX
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* @param childMinY
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* @param bandList
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* @return
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*/
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public WritableRaster createWritableChild(int parentX, int parentY,
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int w, int h, int childMinX, int childMinY, int[] bandList)
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{
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// This mirrors the code from the super class
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if (parentX < minX || parentX + w > minX + width
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|| parentY < minY || parentY + h > minY + height)
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throw new RasterFormatException("Child raster extends beyond parent");
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SampleModel sm = (bandList == null) ?
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sampleModel :
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sampleModel.createSubsetSampleModel(bandList);
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return new WritableRaster(sm, getDataBuffer(),
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new Rectangle(childMinX, childMinY, w, h),
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new Point(sampleModelTranslateX + childMinX -
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parentX,
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sampleModelTranslateY + childMinY -
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parentY),
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this);
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}
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public Raster createChild(int parentX, int parentY, int width,
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int height, int childMinX, int childMinY,
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int[] bandList)
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{
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if (parentX < minX || parentX + width > minX + this.width
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|| parentY < minY || parentY + height > minY + this.height)
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throw new RasterFormatException("Child raster extends beyond parent");
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SampleModel sm = (bandList == null) ?
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sampleModel :
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sampleModel.createSubsetSampleModel(bandList);
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return new WritableRaster(sm, dataBuffer,
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new Rectangle(childMinX, childMinY, width, height),
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new Point(sampleModelTranslateX + childMinX - parentX,
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sampleModelTranslateY + childMinY - parentY),
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this);
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}
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public void setDataElements(int x, int y, Object inData)
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{
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sampleModel.setDataElements(x - sampleModelTranslateX,
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y - sampleModelTranslateY, inData, dataBuffer);
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}
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public void setDataElements(int x, int y, Raster inRaster)
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{
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Object dataElements = getDataElements(0, 0, inRaster.getWidth(),
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inRaster.getHeight(), null);
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setDataElements(x, y, dataElements);
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}
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public void setDataElements(int x, int y, int w, int h, Object inData)
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{
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sampleModel.setDataElements(x - sampleModelTranslateX,
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y - sampleModelTranslateY, w, h, inData, dataBuffer);
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}
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/**
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*
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* @param srcRaster
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*/
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public void setRect(Raster srcRaster)
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{
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setRect(0, 0, srcRaster);
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}
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/**
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*
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* @param dx
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* @param dy
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* @param srcRaster
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*/
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public void setRect(int dx, int dy, Raster srcRaster)
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{
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Rectangle targetUnclipped = new Rectangle(srcRaster.getMinX() + dx,
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srcRaster.getMinY() + dy, srcRaster.getWidth(), srcRaster.getHeight());
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Rectangle target = getBounds().intersection(targetUnclipped);
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if (target.isEmpty()) return;
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int sx = target.x - dx;
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int sy = target.y - dy;
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// FIXME: Do tests on rasters and use get/set data instead.
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/* The JDK documentation seems to imply this implementation.
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(the trucation of higher bits), but an implementation using
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get/setDataElements would be more efficient. None of the
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implementations would do anything sensible when the sample
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models don't match.
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But this is probably not the place to consider such
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optimizations.*/
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int[] pixels = srcRaster.getPixels(sx, sy, target.width, target.height,
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(int[]) null);
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setPixels(target.x, target.y, target.width, target.height, pixels);
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}
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/**
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* Sets the samples for the pixel at (x, y) in the raster to the specified
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* values.
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*
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* @param x the x-coordinate of the pixel.
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* @param y the y-coordinate of the pixel.
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* @param iArray the sample values (<code>null</code> not permitted).
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*
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* @throws NullPointerException if <code>iArray</code> is <code>null</code>.
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*/
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public void setPixel(int x, int y, int[] iArray)
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{
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sampleModel.setPixel(x - sampleModelTranslateX, y - sampleModelTranslateY,
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iArray, dataBuffer);
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}
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/**
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* Sets the samples for the pixel at (x, y) in the raster to the specified
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* values.
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*
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* @param x the x-coordinate of the pixel.
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* @param y the y-coordinate of the pixel.
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* @param fArray the sample values (<code>null</code> not permitted).
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*
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* @throws NullPointerException if <code>fArray</code> is <code>null</code>.
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*/
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public void setPixel(int x, int y, float[] fArray)
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{
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sampleModel.setPixel(x - sampleModelTranslateX, y - sampleModelTranslateY,
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fArray, dataBuffer);
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}
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/**
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* Sets the samples for the pixel at (x, y) in the raster to the specified
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* values.
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*
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* @param x the x-coordinate of the pixel.
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* @param y the y-coordinate of the pixel.
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* @param dArray the sample values (<code>null</code> not permitted).
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*
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* @throws NullPointerException if <code>dArray</code> is <code>null</code>.
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*/
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public void setPixel(int x, int y, double[] dArray)
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{
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sampleModel.setPixel(x - sampleModelTranslateX, y - sampleModelTranslateY,
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dArray, dataBuffer);
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}
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/**
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* Sets the sample values for the pixels in the region specified by
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* (x, y, w, h) in the raster. The array is ordered by pixels (that is, all
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* the samples for the first pixel are grouped together, followed by all the
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* samples for the second pixel, and so on).
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*
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* @param x the x-coordinate of the top-left pixel.
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* @param y the y-coordinate of the top-left pixel.
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* @param w the width of the region of pixels.
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* @param h the height of the region of pixels.
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* @param iArray the pixel sample values (<code>null</code> not permitted).
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*
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* @throws NullPointerException if <code>iArray</code> is <code>null</code>.
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*/
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public void setPixels(int x, int y, int w, int h, int[] iArray)
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{
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sampleModel.setPixels(x - sampleModelTranslateX, y - sampleModelTranslateY,
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w, h, iArray, dataBuffer);
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}
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/**
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* Sets the sample values for the pixels in the region specified by
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* (x, y, w, h) in the raster. The array is ordered by pixels (that is, all
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* the samples for the first pixel are grouped together, followed by all the
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* samples for the second pixel, and so on).
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*
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* @param x the x-coordinate of the top-left pixel.
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* @param y the y-coordinate of the top-left pixel.
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* @param w the width of the region of pixels.
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* @param h the height of the region of pixels.
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* @param fArray the pixel sample values (<code>null</code> not permitted).
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*
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* @throws NullPointerException if <code>fArray</code> is <code>null</code>.
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*/
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public void setPixels(int x, int y, int w, int h, float[] fArray)
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{
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sampleModel.setPixels(x - sampleModelTranslateX, y - sampleModelTranslateY,
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w, h, fArray, dataBuffer);
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}
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/**
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* Sets the sample values for the pixels in the region specified by
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* (x, y, w, h) in the raster. The array is ordered by pixels (that is, all
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* the samples for the first pixel are grouped together, followed by all the
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* samples for the second pixel, and so on).
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*
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* @param x the x-coordinate of the top-left pixel.
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* @param y the y-coordinate of the top-left pixel.
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* @param w the width of the region of pixels.
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* @param h the height of the region of pixels.
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* @param dArray the pixel sample values (<code>null</code> not permitted).
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*
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* @throws NullPointerException if <code>dArray</code> is <code>null</code>.
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*/
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public void setPixels(int x, int y, int w, int h, double[] dArray)
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{
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sampleModel.setPixels(x - sampleModelTranslateX, y - sampleModelTranslateY,
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w, h, dArray, dataBuffer);
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}
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/**
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* Sets the sample value for a band for the pixel at (x, y) in the raster.
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*
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* @param x the x-coordinate of the pixel.
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* @param y the y-coordinate of the pixel.
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* @param b the band (in the range <code>0</code> to
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* <code>getNumBands() - 1</code>).
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* @param s the sample value.
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*/
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public void setSample(int x, int y, int b, int s)
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{
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sampleModel.setSample(x - sampleModelTranslateX, y - sampleModelTranslateY,
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b, s, dataBuffer);
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}
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/**
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* Sets the sample value for a band for the pixel at (x, y) in the raster.
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*
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* @param x the x-coordinate of the pixel.
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* @param y the y-coordinate of the pixel.
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* @param b the band (in the range <code>0</code> to
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* <code>getNumBands() - 1</code>).
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* @param s the sample value.
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*/
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public void setSample(int x, int y, int b, float s)
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{
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sampleModel.setSample(x - sampleModelTranslateX, y - sampleModelTranslateY,
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b, s, dataBuffer);
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}
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/**
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* Sets the sample value for a band for the pixel at (x, y) in the raster.
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*
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* @param x the x-coordinate of the pixel.
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* @param y the y-coordinate of the pixel.
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* @param b the band (in the range <code>0</code> to
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* <code>getNumBands() - 1</code>).
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* @param s the sample value.
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*/
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public void setSample(int x, int y, int b, double s)
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{
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sampleModel.setSample(x - sampleModelTranslateX, y - sampleModelTranslateY,
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b, s, dataBuffer);
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}
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/**
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* Sets the sample values for one band for the pixels in the region
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* specified by (x, y, w, h) in the raster.
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*
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* @param x the x-coordinate of the top-left pixel.
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* @param y the y-coordinate of the top-left pixel.
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* @param w the width of the region of pixels.
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* @param h the height of the region of pixels.
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* @param b the band (in the range <code>0</code> to
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* </code>getNumBands() - 1</code>).
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* @param iArray the sample values (<code>null</code> not permitted).
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*
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* @throws NullPointerException if <code>iArray</code> is <code>null</code>.
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*/
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public void setSamples(int x, int y, int w, int h, int b,
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int[] iArray)
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{
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sampleModel.setSamples(x - sampleModelTranslateX, y - sampleModelTranslateY,
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w, h, b, iArray, dataBuffer);
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}
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/**
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* Sets the sample values for one band for the pixels in the region
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* specified by (x, y, w, h) in the raster.
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*
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* @param x the x-coordinate of the top-left pixel.
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* @param y the y-coordinate of the top-left pixel.
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* @param w the width of the region of pixels.
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* @param h the height of the region of pixels.
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* @param b the band (in the range <code>0</code> to
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* </code>getNumBands() - 1</code>).
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* @param fArray the sample values (<code>null</code> not permitted).
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*
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* @throws NullPointerException if <code>fArray</code> is <code>null</code>.
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*/
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public void setSamples(int x, int y, int w, int h, int b,
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float[] fArray)
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{
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sampleModel.setSamples(x - sampleModelTranslateX, y - sampleModelTranslateY,
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w, h, b, fArray, dataBuffer);
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}
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/**
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* Sets the sample values for one band for the pixels in the region
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* specified by (x, y, w, h) in the raster.
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*
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* @param x the x-coordinate of the top-left pixel.
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* @param y the y-coordinate of the top-left pixel.
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* @param w the width of the region of pixels.
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* @param h the height of the region of pixels.
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* @param b the band (in the range <code>0</code> to
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* </code>getNumBands() - 1</code>).
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* @param dArray the sample values (<code>null</code> not permitted).
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*
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* @throws NullPointerException if <code>dArray</code> is <code>null</code>.
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*/
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public void setSamples(int x, int y, int w, int h, int b,
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double[] dArray)
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{
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sampleModel.setSamples(x - sampleModelTranslateX, y - sampleModelTranslateY,
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w, h, b, dArray, dataBuffer);
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}
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}
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