src/share/classes/sun/awt/image/ShortBandedRaster.java

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   1 /*
   2  * Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any


 148             int xOffset = aRegion.x - origin.x;
 149             int yOffset = aRegion.y - origin.y;
 150             for (int i = 0; i < bankIndices.length; i++) {
 151                data[i] = stealData(dbus, bankIndices[i]);
 152                dataOffsets[i] = dOffsets[bankIndices[i]] +
 153                    xOffset + yOffset*scanlineStride + bandOffsets[i];
 154             }
 155         } else {
 156             throw new RasterFormatException("ShortBandedRasters must have "+
 157                 "BandedSampleModels");
 158         }
 159         verify();
 160     }
 161 
 162     /**
 163      * Returns a copy of the data offsets array. For each band the data offset
 164      * is the index into the band's data array, of the first sample of the
 165      * band.
 166      */
 167     public int[] getDataOffsets() {
 168         return (int[]) dataOffsets.clone();
 169     }
 170 
 171     /**
 172      * Returns the data offset for the specified band.  The data offset
 173      * is the index into the band's data array
 174      * in which the first sample of the first scanline is stored.
 175      * @param   The band whose offset is returned.
 176      */
 177     public int getDataOffset(int band) {
 178         return dataOffsets[band];
 179     }
 180 
 181     /**
 182      * Returns the scanline stride -- the number of data array elements between
 183      * a given sample and the sample in the same column
 184      * of the next row in the same band.
 185      */
 186     public int getScanlineStride() {
 187         return scanlineStride;
 188     }


   1 /*
   2  * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any


 148             int xOffset = aRegion.x - origin.x;
 149             int yOffset = aRegion.y - origin.y;
 150             for (int i = 0; i < bankIndices.length; i++) {
 151                data[i] = stealData(dbus, bankIndices[i]);
 152                dataOffsets[i] = dOffsets[bankIndices[i]] +
 153                    xOffset + yOffset*scanlineStride + bandOffsets[i];
 154             }
 155         } else {
 156             throw new RasterFormatException("ShortBandedRasters must have "+
 157                 "BandedSampleModels");
 158         }
 159         verify();
 160     }
 161 
 162     /**
 163      * Returns a copy of the data offsets array. For each band the data offset
 164      * is the index into the band's data array, of the first sample of the
 165      * band.
 166      */
 167     public int[] getDataOffsets() {
 168         return dataOffsets.clone();
 169     }
 170 
 171     /**
 172      * Returns the data offset for the specified band.  The data offset
 173      * is the index into the band's data array
 174      * in which the first sample of the first scanline is stored.
 175      * @param   The band whose offset is returned.
 176      */
 177     public int getDataOffset(int band) {
 178         return dataOffsets[band];
 179     }
 180 
 181     /**
 182      * Returns the scanline stride -- the number of data array elements between
 183      * a given sample and the sample in the same column
 184      * of the next row in the same band.
 185      */
 186     public int getScanlineStride() {
 187         return scanlineStride;
 188     }