| /* |
| * Copyright (c) 2001, 2008, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.awt.image; |
| |
| import java.awt.Point; |
| import java.awt.Rectangle; |
| import java.awt.Image; |
| import java.awt.image.DataBuffer; |
| import java.awt.image.DataBufferByte; |
| import java.awt.image.DataBufferUShort; |
| import java.awt.image.DataBufferInt; |
| import java.awt.image.SampleModel; |
| import java.awt.image.WritableRaster; |
| |
| import sun.java2d.StateTrackable.State; |
| import sun.java2d.SurfaceData; |
| import sun.java2d.StateTrackableDelegate; |
| |
| /** |
| * This class exists as a middle layer between WritableRaster and its |
| * implementation specific subclasses (ByteComponentRaster, ShortBandedRaster, |
| * etc). |
| * It provides utilities to steal the data arrays from the standard DataBuffer |
| * types and also steals the StateTrackableDelegate from the associated |
| * DataBuffer so that it can be updated when the data is changed. |
| */ |
| public class SunWritableRaster extends WritableRaster { |
| private static DataStealer stealer; |
| |
| public static interface DataStealer { |
| public byte[] getData(DataBufferByte dbb, int bank); |
| public short[] getData(DataBufferUShort dbus, int bank); |
| public int[] getData(DataBufferInt dbi, int bank); |
| public StateTrackableDelegate getTrackable(DataBuffer db); |
| public void setTrackable(DataBuffer db, StateTrackableDelegate trackable); |
| } |
| |
| public static void setDataStealer(DataStealer ds) { |
| if (stealer != null) { |
| throw new InternalError("Attempt to set DataStealer twice"); |
| } |
| stealer = ds; |
| } |
| |
| public static byte[] stealData(DataBufferByte dbb, int bank) { |
| return stealer.getData(dbb, bank); |
| } |
| |
| public static short[] stealData(DataBufferUShort dbus, int bank) { |
| return stealer.getData(dbus, bank); |
| } |
| |
| public static int[] stealData(DataBufferInt dbi, int bank) { |
| return stealer.getData(dbi, bank); |
| } |
| |
| public static StateTrackableDelegate stealTrackable(DataBuffer db) { |
| return stealer.getTrackable(db); |
| } |
| |
| public static void setTrackable(DataBuffer db, StateTrackableDelegate trackable) { |
| stealer.setTrackable(db, trackable); |
| } |
| |
| public static void makeTrackable(DataBuffer db) { |
| stealer.setTrackable(db, StateTrackableDelegate.createInstance(State.STABLE)); |
| } |
| |
| public static void markDirty(DataBuffer db) { |
| stealer.getTrackable(db).markDirty(); |
| } |
| |
| public static void markDirty(WritableRaster wr) { |
| if (wr instanceof SunWritableRaster) { |
| ((SunWritableRaster) wr).markDirty(); |
| } else { |
| markDirty(wr.getDataBuffer()); |
| } |
| } |
| |
| public static void markDirty(Image img) { |
| SurfaceData.getPrimarySurfaceData(img).markDirty(); |
| } |
| |
| private StateTrackableDelegate theTrackable; |
| |
| public SunWritableRaster(SampleModel sampleModel, Point origin) { |
| super(sampleModel, origin); |
| theTrackable = stealTrackable(dataBuffer); |
| } |
| |
| public SunWritableRaster(SampleModel sampleModel, |
| DataBuffer dataBuffer, |
| Point origin) |
| { |
| super(sampleModel, dataBuffer, origin); |
| theTrackable = stealTrackable(dataBuffer); |
| } |
| |
| public SunWritableRaster(SampleModel sampleModel, |
| DataBuffer dataBuffer, |
| Rectangle aRegion, |
| Point sampleModelTranslate, |
| WritableRaster parent) |
| { |
| super(sampleModel, dataBuffer, aRegion, sampleModelTranslate, parent); |
| theTrackable = stealTrackable(dataBuffer); |
| } |
| |
| /** |
| * Mark the TrackableDelegate of the associated DataBuffer dirty. |
| */ |
| public final void markDirty() { |
| theTrackable.markDirty(); |
| } |
| } |