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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/java/awt/image/WritableRaster.java | |
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Diffstat (limited to 'libjava/classpath/java/awt/image/WritableRaster.java')
-rw-r--r-- | libjava/classpath/java/awt/image/WritableRaster.java | 448 |
1 files changed, 448 insertions, 0 deletions
diff --git a/libjava/classpath/java/awt/image/WritableRaster.java b/libjava/classpath/java/awt/image/WritableRaster.java new file mode 100644 index 000000000..68774f785 --- /dev/null +++ b/libjava/classpath/java/awt/image/WritableRaster.java @@ -0,0 +1,448 @@ +/* Copyright (C) 2000, 2002, 2003, 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.Point; +import java.awt.Rectangle; + +/** + * A raster with methods to support updating pixel values. + * + * @author Rolf W. Rasmussen (rolfwr@ii.uib.no) + */ +public class WritableRaster extends Raster +{ + /** + * Creates a new <code>WritableRaster</code>. + * + * @param sampleModel the sample model. + * @param origin the origin. + */ + protected WritableRaster(SampleModel sampleModel, Point origin) + { + this(sampleModel, sampleModel.createDataBuffer(), origin); + } + + /** + * Creates a new <code>WritableRaster</code> instance. + * + * @param sampleModel the sample model. + * @param dataBuffer the data buffer. + * @param origin the origin. + */ + protected WritableRaster(SampleModel sampleModel, DataBuffer dataBuffer, + Point origin) + { + this(sampleModel, dataBuffer, + new Rectangle(origin != null ? origin.x : 0, + origin != null ? origin.y : 0, + sampleModel.getWidth(), sampleModel.getHeight()), + origin, null); + } + + /** + * Creates a new <code>WritableRaster</code> instance. + * + * @param sampleModel the sample model. + * @param dataBuffer the data buffer. + * @param aRegion the raster's bounds. + * @param sampleModelTranslate the translation. + * @param parent the parent. + */ + protected WritableRaster(SampleModel sampleModel, + DataBuffer dataBuffer, + Rectangle aRegion, + Point sampleModelTranslate, + WritableRaster parent) + { + super(sampleModel, dataBuffer, aRegion, sampleModelTranslate, parent); + } + + /** + * Returns the raster's parent, cast as a {@link WritableRaster}. + * + * @return The raster's parent. + */ + public WritableRaster getWritableParent() + { + return (WritableRaster) getParent(); + } + + /** + * @param childMinX + * @param childMinY + * @return + */ + public WritableRaster createWritableTranslatedChild(int childMinX, + int childMinY) + { + return createWritableChild(minX, minY, width, height, + childMinX, childMinY, null); + } + + /** + * + * @param parentX + * @param parentY + * @param w + * @param h + * @param childMinX + * @param childMinY + * @param bandList + * @return + */ + public WritableRaster createWritableChild(int parentX, int parentY, + int w, int h, int childMinX, int childMinY, int[] bandList) + { + // This mirrors the code from the super class + + if (parentX < minX || parentX + w > minX + width + || parentY < minY || parentY + h > minY + height) + throw new RasterFormatException("Child raster extends beyond parent"); + + SampleModel sm = (bandList == null) ? + sampleModel : + sampleModel.createSubsetSampleModel(bandList); + + return new WritableRaster(sm, getDataBuffer(), + new Rectangle(childMinX, childMinY, w, h), + new Point(sampleModelTranslateX + childMinX - + parentX, + sampleModelTranslateY + childMinY - + parentY), + this); + } + + public Raster createChild(int parentX, int parentY, int width, + int height, int childMinX, int childMinY, + int[] bandList) + { + if (parentX < minX || parentX + width > minX + this.width + || parentY < minY || parentY + height > minY + this.height) + throw new RasterFormatException("Child raster extends beyond parent"); + + SampleModel sm = (bandList == null) ? + sampleModel : + sampleModel.createSubsetSampleModel(bandList); + + return new WritableRaster(sm, dataBuffer, + new Rectangle(childMinX, childMinY, width, height), + new Point(sampleModelTranslateX + childMinX - parentX, + sampleModelTranslateY + childMinY - parentY), + this); + } + + public void setDataElements(int x, int y, Object inData) + { + sampleModel.setDataElements(x - sampleModelTranslateX, + y - sampleModelTranslateY, inData, dataBuffer); + } + + public void setDataElements(int x, int y, Raster inRaster) + { + Object dataElements = getDataElements(0, 0, inRaster.getWidth(), + inRaster.getHeight(), null); + setDataElements(x, y, dataElements); + } + + public void setDataElements(int x, int y, int w, int h, Object inData) + { + sampleModel.setDataElements(x - sampleModelTranslateX, + y - sampleModelTranslateY, w, h, inData, dataBuffer); + } + + /** + * + * @param srcRaster + */ + public void setRect(Raster srcRaster) + { + setRect(0, 0, srcRaster); + } + + /** + * + * @param dx + * @param dy + * @param srcRaster + */ + public void setRect(int dx, int dy, Raster srcRaster) + { + Rectangle targetUnclipped = new Rectangle(srcRaster.getMinX() + dx, + srcRaster.getMinY() + dy, srcRaster.getWidth(), srcRaster.getHeight()); + + Rectangle target = getBounds().intersection(targetUnclipped); + + if (target.isEmpty()) return; + + int sx = target.x - dx; + int sy = target.y - dy; + + // FIXME: Do tests on rasters and use get/set data instead. + + /* The JDK documentation seems to imply this implementation. + (the trucation of higher bits), but an implementation using + get/setDataElements would be more efficient. None of the + implementations would do anything sensible when the sample + models don't match. + + But this is probably not the place to consider such + optimizations.*/ + + int[] pixels = srcRaster.getPixels(sx, sy, target.width, target.height, + (int[]) null); + + setPixels(target.x, target.y, target.width, target.height, pixels); + } + + /** + * Sets the samples for the pixel at (x, y) in the raster to the specified + * values. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param iArray the sample values (<code>null</code> not permitted). + * + * @throws NullPointerException if <code>iArray</code> is <code>null</code>. + */ + public void setPixel(int x, int y, int[] iArray) + { + sampleModel.setPixel(x - sampleModelTranslateX, y - sampleModelTranslateY, + iArray, dataBuffer); + } + + /** + * Sets the samples for the pixel at (x, y) in the raster to the specified + * values. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param fArray the sample values (<code>null</code> not permitted). + * + * @throws NullPointerException if <code>fArray</code> is <code>null</code>. + */ + public void setPixel(int x, int y, float[] fArray) + { + sampleModel.setPixel(x - sampleModelTranslateX, y - sampleModelTranslateY, + fArray, dataBuffer); + } + + /** + * Sets the samples for the pixel at (x, y) in the raster to the specified + * values. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param dArray the sample values (<code>null</code> not permitted). + * + * @throws NullPointerException if <code>dArray</code> is <code>null</code>. + */ + public void setPixel(int x, int y, double[] dArray) + { + sampleModel.setPixel(x - sampleModelTranslateX, y - sampleModelTranslateY, + dArray, dataBuffer); + } + + /** + * Sets the sample values for the pixels in the region specified by + * (x, y, w, h) in the raster. The array is ordered by pixels (that is, all + * the samples for the first pixel are grouped together, followed by all the + * samples for the second pixel, and so on). + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param iArray the pixel sample values (<code>null</code> not permitted). + * + * @throws NullPointerException if <code>iArray</code> is <code>null</code>. + */ + public void setPixels(int x, int y, int w, int h, int[] iArray) + { + sampleModel.setPixels(x - sampleModelTranslateX, y - sampleModelTranslateY, + w, h, iArray, dataBuffer); + } + + /** + * Sets the sample values for the pixels in the region specified by + * (x, y, w, h) in the raster. The array is ordered by pixels (that is, all + * the samples for the first pixel are grouped together, followed by all the + * samples for the second pixel, and so on). + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param fArray the pixel sample values (<code>null</code> not permitted). + * + * @throws NullPointerException if <code>fArray</code> is <code>null</code>. + */ + public void setPixels(int x, int y, int w, int h, float[] fArray) + { + sampleModel.setPixels(x - sampleModelTranslateX, y - sampleModelTranslateY, + w, h, fArray, dataBuffer); + } + + /** + * Sets the sample values for the pixels in the region specified by + * (x, y, w, h) in the raster. The array is ordered by pixels (that is, all + * the samples for the first pixel are grouped together, followed by all the + * samples for the second pixel, and so on). + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param dArray the pixel sample values (<code>null</code> not permitted). + * + * @throws NullPointerException if <code>dArray</code> is <code>null</code>. + */ + public void setPixels(int x, int y, int w, int h, double[] dArray) + { + sampleModel.setPixels(x - sampleModelTranslateX, y - sampleModelTranslateY, + w, h, dArray, dataBuffer); + } + + /** + * Sets the sample value for a band for the pixel at (x, y) in the raster. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param b the band (in the range <code>0</code> to + * <code>getNumBands() - 1</code>). + * @param s the sample value. + */ + public void setSample(int x, int y, int b, int s) + { + sampleModel.setSample(x - sampleModelTranslateX, y - sampleModelTranslateY, + b, s, dataBuffer); + } + + /** + * Sets the sample value for a band for the pixel at (x, y) in the raster. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param b the band (in the range <code>0</code> to + * <code>getNumBands() - 1</code>). + * @param s the sample value. + */ + public void setSample(int x, int y, int b, float s) + { + sampleModel.setSample(x - sampleModelTranslateX, y - sampleModelTranslateY, + b, s, dataBuffer); + } + + /** + * Sets the sample value for a band for the pixel at (x, y) in the raster. + * + * @param x the x-coordinate of the pixel. + * @param y the y-coordinate of the pixel. + * @param b the band (in the range <code>0</code> to + * <code>getNumBands() - 1</code>). + * @param s the sample value. + */ + public void setSample(int x, int y, int b, double s) + { + sampleModel.setSample(x - sampleModelTranslateX, y - sampleModelTranslateY, + b, s, dataBuffer); + } + + /** + * Sets the sample values for one band for the pixels in the region + * specified by (x, y, w, h) in the raster. + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param b the band (in the range <code>0</code> to + * </code>getNumBands() - 1</code>). + * @param iArray the sample values (<code>null</code> not permitted). + * + * @throws NullPointerException if <code>iArray</code> is <code>null</code>. + */ + public void setSamples(int x, int y, int w, int h, int b, + int[] iArray) + { + sampleModel.setSamples(x - sampleModelTranslateX, y - sampleModelTranslateY, + w, h, b, iArray, dataBuffer); + } + + /** + * Sets the sample values for one band for the pixels in the region + * specified by (x, y, w, h) in the raster. + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param b the band (in the range <code>0</code> to + * </code>getNumBands() - 1</code>). + * @param fArray the sample values (<code>null</code> not permitted). + * + * @throws NullPointerException if <code>fArray</code> is <code>null</code>. + */ + public void setSamples(int x, int y, int w, int h, int b, + float[] fArray) + { + sampleModel.setSamples(x - sampleModelTranslateX, y - sampleModelTranslateY, + w, h, b, fArray, dataBuffer); + } + + /** + * Sets the sample values for one band for the pixels in the region + * specified by (x, y, w, h) in the raster. + * + * @param x the x-coordinate of the top-left pixel. + * @param y the y-coordinate of the top-left pixel. + * @param w the width of the region of pixels. + * @param h the height of the region of pixels. + * @param b the band (in the range <code>0</code> to + * </code>getNumBands() - 1</code>). + * @param dArray the sample values (<code>null</code> not permitted). + * + * @throws NullPointerException if <code>dArray</code> is <code>null</code>. + */ + public void setSamples(int x, int y, int w, int h, int b, + double[] dArray) + { + sampleModel.setSamples(x - sampleModelTranslateX, y - sampleModelTranslateY, + w, h, b, dArray, dataBuffer); + } +} |