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Diffstat (limited to 'libjava/classpath/java/awt/image/WritableRaster.java')
| -rw-r--r-- | libjava/classpath/java/awt/image/WritableRaster.java | 265 |
1 files changed, 265 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 00000000000..2e5462fd92e --- /dev/null +++ b/libjava/classpath/java/awt/image/WritableRaster.java @@ -0,0 +1,265 @@ +/* Copyright (C) 2000, 2002, 2003 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; + +/** + * @author Rolf W. Rasmussen (rolfwr@ii.uib.no) + */ +public class WritableRaster extends Raster +{ + protected WritableRaster(SampleModel sampleModel, Point origin) + { + this(sampleModel, sampleModel.createDataBuffer(), 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); + } + + protected WritableRaster(SampleModel sampleModel, + DataBuffer dataBuffer, + Rectangle aRegion, + Point sampleModelTranslate, + WritableRaster parent) + { + super(sampleModel, dataBuffer, aRegion, sampleModelTranslate, + parent); + } + + public WritableRaster getWritableParent() + { + return (WritableRaster) getParent(); + } + + public WritableRaster createWritableTranslatedChild(int childMinX, + int childMinY) + { + // This mirrors the code from the super class + int tcx = sampleModelTranslateX - minX + childMinX; + int tcy = sampleModelTranslateY - minY + childMinY; + + return new WritableRaster(sampleModel, dataBuffer, + new Rectangle(childMinX, childMinY, + width, height), + new Point(tcx, tcy), + this); + } + + 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 + + // FIXME: Throw RasterFormatException if child bounds extends + // beyond the bounds of this raster. + + SampleModel sm = (bandList == null) ? + sampleModel : + sampleModel.createSubsetSampleModel(bandList); + + return new + WritableRaster(sm, dataBuffer, + new Rectangle(childMinX, childMinY, + w, h), + 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); + } + + public void setRect(Raster srcRaster) + { + setRect(0, 0, 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); + } + + public void setPixel(int x, int y, int[] iArray) + { + sampleModel.setPixel(x-sampleModelTranslateX, + y-sampleModelTranslateY, + iArray, dataBuffer); + } + + public void setPixel(int x, int y, float[] fArray) + { + sampleModel.setPixel(x-sampleModelTranslateX, + y-sampleModelTranslateY, + fArray, dataBuffer); + } + + public void setPixel(int x, int y, double[] dArray) + { + sampleModel.setPixel(x-sampleModelTranslateX, + y-sampleModelTranslateY, + dArray, dataBuffer); + } + + public void setPixels(int x, int y, int w, int h, int[] iArray) + { + sampleModel.setPixels(x-sampleModelTranslateX, + y-sampleModelTranslateY, + w, h, iArray, dataBuffer); + } + + public void setPixels(int x, int y, int w, int h, float[] fArray) + { + sampleModel.setPixels(x-sampleModelTranslateX, + y-sampleModelTranslateY, + w, h, fArray, dataBuffer); + } + + public void setPixels(int x, int y, int w, int h, double[] dArray) + { + sampleModel.setPixels(x-sampleModelTranslateX, + y-sampleModelTranslateY, + w, h, dArray, dataBuffer); + } + + public void setSample(int x, int y, int b, int s) + { + sampleModel.setSample(x-sampleModelTranslateX, + y-sampleModelTranslateY, + b, s, dataBuffer); + } + + public void setSample(int x, int y, int b, float s) + { + sampleModel.setSample(x-sampleModelTranslateX, + y-sampleModelTranslateY, + b, s, dataBuffer); + } + + public void setSample(int x, int y, int b, double s) + { + sampleModel.setSample(x-sampleModelTranslateX, + y-sampleModelTranslateY, + b, s, dataBuffer); + } + + 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); + } + + 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); + } + + 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); + } +} |