| /* |
| * Copyright (c) 2010, 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.java2d.xr; |
| |
| import java.util.*; |
| |
| /** |
| * Growable int array, designed to allow subclasses to emulate |
| * the behaviour of value types. |
| * |
| * @author Clemens Eisserer |
| */ |
| |
| public class GrowableByteArray |
| { |
| |
| byte[] array; |
| int size; |
| int cellSize; |
| |
| public GrowableByteArray(int cellSize, int initialSize) |
| { |
| array = new byte[initialSize]; |
| size = 0; |
| this.cellSize = cellSize; |
| } |
| |
| private int getNextCellIndex() |
| { |
| int oldSize = size; |
| size += cellSize; |
| |
| if (size >= array.length) |
| { |
| growArray(); |
| } |
| |
| return oldSize; |
| } |
| |
| /** |
| * @return a direct reference to the backing array. |
| */ |
| public byte[] getArray() |
| { |
| return array; |
| } |
| |
| /** |
| * @return a copy of the backing array. |
| */ |
| public byte[] getSizedArray() |
| { |
| return Arrays.copyOf(array, getSize()); |
| } |
| |
| public final int getByte(int index) |
| { |
| return array[getCellIndex(index)]; |
| } |
| |
| /** |
| * Returns the index of the next free cell, |
| * and grows the backing arrays if required. |
| */ |
| public final int getNextIndex() |
| { |
| return getNextCellIndex() / cellSize; |
| } |
| |
| protected final int getCellIndex(int cellIndex) |
| { |
| return cellSize * cellIndex; |
| } |
| |
| public final void addByte(byte i) |
| { |
| int nextIndex = getNextIndex(); |
| array[nextIndex] = i; |
| } |
| |
| /** |
| * @return The number of stored cells. |
| */ |
| public final int getSize() |
| { |
| return size / cellSize; |
| } |
| |
| public void clear() |
| { |
| size = 0; |
| } |
| |
| protected void growArray() |
| { |
| int newSize = Math.max(array.length * 2, 10); |
| byte[] oldArray = array; |
| array = new byte[newSize]; |
| |
| System.arraycopy(oldArray, 0, array, 0, oldArray.length); |
| } |
| |
| } |