libjava/java/awt/image/WritableRaster.java

   1 /* Copyright (C) 2000, 2002, 2003  Free Software Foundation
   2
   3 This file is part of GNU Classpath.
   4
   5 GNU Classpath is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation; either version 2, or (at your option)
   8 any later version.
   9
  10 GNU Classpath is distributed in the hope that it will be useful, but
  11 WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with GNU Classpath; see the file COPYING.  If not, write to the
  17 Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18 02111-1307 USA.
  19
  20 Linking this library statically or dynamically with other modules is
  21 making a combined work based on this library.  Thus, the terms and
  22 conditions of the GNU General Public License cover the whole
  23 combination.
  24
  25 As a special exception, the copyright holders of this library give you
  26 permission to link this library with independent modules to produce an
  27 executable, regardless of the license terms of these independent
  28 modules, and to copy and distribute the resulting executable under
  29 terms of your choice, provided that you also meet, for each linked
  30 independent module, the terms and conditions of the license of that
  31 module.  An independent module is a module which is not derived from
  32 or based on this library.  If you modify this library, you may extend
  33 this exception to your version of the library, but you are not
  34 obligated to do so.  If you do not wish to do so, delete this
  35 exception statement from your version. */
  36
  37
  38 package java.awt.image;
  39
  40 import java.awt.Point;
  41 import java.awt.Rectangle;
  42
  43 /**
  44  * @author Rolf W. Rasmussen (rolfwr@ii.uib.no)
  45  */
  46 public class WritableRaster extends Raster
  47 {
  48   protected WritableRaster(SampleModel sampleModel, Point origin)
  49   {
  50     this(sampleModel, sampleModel.createDataBuffer(), origin);
  51   }
  52
  53   protected WritableRaster(SampleModel sampleModel,
  54                            DataBuffer dataBuffer, Point origin)
  55   {
  56     this(sampleModel, dataBuffer,
  57          new Rectangle(origin != null ? origin.x : 0,
  58                        origin != null ? origin.y : 0,
  59                        sampleModel.getWidth(), sampleModel.getHeight()),
  60          origin,
  61          null);
  62   }
  63
  64   protected WritableRaster(SampleModel sampleModel,
  65                            DataBuffer dataBuffer,
  66                            Rectangle aRegion,
  67                            Point sampleModelTranslate,
  68                            WritableRaster parent)
  69   {
  70     super(sampleModel, dataBuffer, aRegion, sampleModelTranslate,
  71           parent);
  72   }
  73
  74   public WritableRaster getWritableParent()
  75   {
  76     return (WritableRaster) getParent();
  77   }
  78
  79   public WritableRaster createWritableTranslatedChild(int childMinX,
  80                                                       int childMinY)
  81   {
  82     // This mirrors the code from the super class
  83     int tcx = sampleModelTranslateX - minX + childMinX;
  84     int tcy = sampleModelTranslateY - minY + childMinY;
  85
  86     return new WritableRaster(sampleModel, dataBuffer,
  87                               new Rectangle(childMinX, childMinY,
  88                                             width, height),
  89                               new Point(tcx, tcy),
  90                               this);
  91   }
  92
  93   public WritableRaster createWritableChild(int parentX,
  94                                             int parentY,
  95                                             int w, int h,
  96                                             int childMinX,
  97                                             int childMinY,
  98                                             int[] bandList)
  99   {
 100     // This mirrors the code from the super class
 101
 102     // FIXME: Throw RasterFormatException if child bounds extends
 103     // beyond the bounds of this raster.
 104
 105     SampleModel sm = (bandList == null) ?
 106       sampleModel :
 107       sampleModel.createSubsetSampleModel(bandList);
 108
 109     return new
 110       WritableRaster(sm, dataBuffer,
 111                      new Rectangle(childMinX, childMinY,
 112                                    w, h),
 113                      new Point(sampleModelTranslateX+childMinX-parentX,
 114                                sampleModelTranslateY+childMinY-parentY),
 115                      this);
 116   }
 117
 118   public void setDataElements(int x, int y, Object inData)
 119   {
 120     sampleModel.setDataElements(x-sampleModelTranslateX,
 121                                 y-sampleModelTranslateY,
 122                                 inData, dataBuffer);
 123   }
 124
 125   public void setDataElements(int x, int y, Raster inRaster)
 126   {
 127     Object dataElements = getDataElements(0, 0,
 128                                           inRaster.getWidth(),
 129                                           inRaster.getHeight(),
 130                                           null);
 131     setDataElements(x, y, dataElements);
 132   }
 133
 134   public void setDataElements(int x, int y, int w, int h,
 135                               Object inData)
 136   {
 137     sampleModel.setDataElements(x-sampleModelTranslateX,
 138                                 y-sampleModelTranslateY,
 139                                 w, h, inData, dataBuffer);
 140   }
 141
 142   public void setRect(Raster srcRaster)
 143   {
 144     setRect(0, 0, srcRaster);
 145   }
 146
 147   public void setRect(int dx, int dy, Raster srcRaster)
 148   {
 149     Rectangle targetUnclipped = new Rectangle(srcRaster.getMinX()+dx,
 150                                               srcRaster.getMinY()+dy,
 151                                               srcRaster.getWidth(),
 152                                               srcRaster.getHeight());
 153
 154     Rectangle target = getBounds().intersection(targetUnclipped);
 155
 156     if (target.isEmpty()) return;
 157
 158     int sx = target.x - dx;
 159     int sy = target.y - dy;
 160
 161     // FIXME: Do tests on rasters and use get/set data instead.
 162
 163     /* The JDK documentation seems to imply this implementation.
 164        (the trucation of higher bits), but an implementation using
 165        get/setDataElements would be more efficient. None of the
 166        implementations would do anything sensible when the sample
 167        models don't match.
 168
 169        But this is probably not the place to consider such
 170        optimizations.*/
 171
 172     int[] pixels = srcRaster.getPixels(sx, sy,
 173                                        target.width, target.height,
 174                                        (int[]) null);
 175
 176     setPixels(target.x, target.y, target.width, target.height, pixels);
 177   }
 178
 179   public void setPixel(int x, int y, int[] iArray)
 180   {
 181     sampleModel.setPixel(x-sampleModelTranslateX,
 182                          y-sampleModelTranslateY,
 183                          iArray, dataBuffer);
 184   }
 185
 186   public void setPixel(int x, int y, float[] fArray)
 187   {
 188     sampleModel.setPixel(x-sampleModelTranslateX,
 189                          y-sampleModelTranslateY,
 190                          fArray, dataBuffer);
 191   }
 192
 193   public void setPixel(int x, int y, double[] dArray)
 194   {
 195     sampleModel.setPixel(x-sampleModelTranslateX,
 196                          y-sampleModelTranslateY,
 197                          dArray, dataBuffer);
 198   }
 199
 200   public void setPixels(int x, int y, int w, int h, int[] iArray)
 201   {
 202     sampleModel.setPixels(x-sampleModelTranslateX,
 203                           y-sampleModelTranslateY,
 204                           w, h, iArray, dataBuffer);
 205   }
 206
 207   public void setPixels(int x, int y, int w, int h, float[] fArray)
 208   {
 209     sampleModel.setPixels(x-sampleModelTranslateX,
 210                           y-sampleModelTranslateY,
 211                           w, h, fArray, dataBuffer);
 212   }
 213
 214   public void setPixels(int x, int y, int w, int h, double[] dArray)
 215   {
 216     sampleModel.setPixels(x-sampleModelTranslateX,
 217                           y-sampleModelTranslateY,
 218                           w, h, dArray, dataBuffer);
 219   }
 220
 221   public void setSample(int x, int y, int b, int s)
 222   {
 223     sampleModel.setSample(x-sampleModelTranslateX,
 224                           y-sampleModelTranslateY,
 225                           b, s, dataBuffer);
 226   }
 227
 228   public void setSample(int x, int y, int b, float s)
 229   {
 230     sampleModel.setSample(x-sampleModelTranslateX,
 231                           y-sampleModelTranslateY,
 232                           b, s, dataBuffer);
 233   }
 234
 235   public void setSample(int x, int y, int b, double s)
 236   {
 237     sampleModel.setSample(x-sampleModelTranslateX,
 238                           y-sampleModelTranslateY,
 239                           b, s, dataBuffer);
 240   }
 241
 242   public void setSamples(int x, int y, int w, int h, int b,
 243                          int[] iArray)
 244   {
 245     sampleModel.setSamples(x-sampleModelTranslateX,
 246                            y-sampleModelTranslateY,
 247                            w, h, b, iArray, dataBuffer);
 248   }
 249
 250   public void setSamples(int x, int y, int w, int h, int b,
 251                          float[] fArray)
 252   {
 253     sampleModel.setSamples(x-sampleModelTranslateX,
 254                            y-sampleModelTranslateY,
 255                            w, h, b, fArray, dataBuffer);
 256   }
 257
 258   public void setSamples(int x, int y, int w, int h, int b,
 259                          double[] dArray)
 260   {
 261     sampleModel.setSamples(x-sampleModelTranslateX,
 262                            y-sampleModelTranslateY,
 263                            w, h, b, dArray, dataBuffer);
 264   }
 265 }