1 2 /* ==================================================================== 3 * The Apache Software License, Version 1.1 4 * 5 * Copyright (c) 2002 The Apache Software Foundation. All rights 6 * reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in 17 * the documentation and/or other materials provided with the 18 * distribution. 19 * 20 * 3. The end-user documentation included with the redistribution, 21 * if any, must include the following acknowledgment: 22 * "This product includes software developed by the 23 * Apache Software Foundation (http://www.apache.org/)." 24 * Alternately, this acknowledgment may appear in the software itself, 25 * if and wherever such third-party acknowledgments normally appear. 26 * 27 * 4. The names "Apache" and "Apache Software Foundation" and 28 * "Apache POI" must not be used to endorse or promote products 29 * derived from this software without prior written permission. For 30 * written permission, please contact apache@apache.org. 31 * 32 * 5. Products derived from this software may not be called "Apache", 33 * "Apache POI", nor may "Apache" appear in their name, without 34 * prior written permission of the Apache Software Foundation. 35 * 36 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 37 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 38 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 39 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 42 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 43 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 44 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 45 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 46 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 47 * SUCH DAMAGE. 48 * ==================================================================== 49 * 50 * This software consists of voluntary contributions made by many 51 * individuals on behalf of the Apache Software Foundation. For more 52 * information on the Apache Software Foundation, please see 53 * <http://www.apache.org/>. 54 */ 55 56 package org.apache.poi.hssf.record; 57 58 import java.util.ArrayList; 59 import java.util.List; 60 61 import org.apache.poi.util.LittleEndian; 62 63 /** 64 * PaletteRecord - Supports custom palettes. 65 * @author Andrew C. Oliver (acoliver at apache dot org) 66 * @version 2.0-pre 67 */ 68 69 public class PaletteRecord 70 extends Record 71 { 72 public final static short sid = 0x92; 73 74 private short field_1_numcolors; 75 private List field_2_colors; 76 77 public PaletteRecord() 78 { 79 } 80 81 /** 82 * Constructs a PaletteRecord record and sets its fields appropriately. 83 * 84 * @param id id must be 0x92 or an exception will be throw upon validation 85 * @param size the size of the data area of the record 86 * @param data data of the record (should not contain sid/len) 87 */ 88 89 public PaletteRecord(short id, short size, byte [] data) 90 { 91 super(id, size, data); 92 } 93 94 /** 95 * Constructs a PaletteRecord record and sets its fields appropriately. 96 * 97 * @param id id must be 0x0A or an exception will be throw upon validation 98 * @param size the size of the data area of the record 99 * @param data data of the record (should not contain sid/len) 100 * @param offset of the record's data 101 */ 102 103 public PaletteRecord(short id, short size, byte [] data, int offset) 104 { 105 super(id, size, data, offset); 106 } 107 108 protected void validateSid(short id) 109 { 110 if (id != sid) 111 { 112 throw new RecordFormatException("NOT An Palette RECORD"); 113 } 114 } 115 116 protected void fillFields(byte [] data, short size, int offset) 117 { 118 field_1_numcolors = LittleEndian.getShort(data,offset+0); 119 field_2_colors = new ArrayList(field_1_numcolors); 120 for (int k = 0; k < field_1_numcolors; k++) { 121 field_2_colors.add(new PColor( 122 data[2+ offset+(k * 4) +0], 123 data[2+ offset+(k * 4) +1], 124 data[2+ offset+(k * 4) +2] 125 ) 126 ); 127 } 128 } 129 130 public String toString() 131 { 132 StringBuffer buffer = new StringBuffer(); 133 134 buffer.append("[Palette]\n"); 135 buffer.append(" numcolors = ").append(field_1_numcolors) 136 .append('\n'); 137 for (int k = 0; k < field_1_numcolors; k++) { 138 PColor c = (PColor) field_2_colors.get(k); 139 buffer.append("* colornum = ").append(k) 140 .append('\n'); 141 buffer.append(c.toString()); 142 buffer.append("/*colornum = ").append(k) 143 .append('\n'); 144 } 145 buffer.append("[/Palette]\n"); 146 return buffer.toString(); 147 } 148 149 public int serialize(int offset, byte [] data) 150 { 151 LittleEndian.putShort(data, 0 + offset, sid); 152 for (int k = 0; k < field_1_numcolors; k++) { 153 PColor c = (PColor)field_2_colors.get(k); 154 c.serialize(data, (2+offset+(k*4))); 155 } 156 157 return getRecordSize(); 158 } 159 160 public int getRecordSize() 161 { 162 return 2 + (field_1_numcolors * 4); 163 } 164 165 public short getSid() 166 { 167 return this.sid; 168 } 169 170 } 171 172 /** 173 * PColor - element in the list of colors - consider it a "struct" 174 */ 175 class PColor { 176 public byte red; 177 public byte green; 178 public byte blue; 179 public PColor(byte red, byte green, byte blue) { 180 this.red=red; 181 this.green=green; 182 this.blue=blue; 183 } 184 185 public void serialize(byte[] data, int offset) { 186 data[offset + 0] = red; 187 data[offset + 1] = green; 188 data[offset + 2] = blue; 189 data[offset + 3] = 0; 190 } 191 192 public String toString() { 193 StringBuffer buffer = new StringBuffer(); 194 buffer.append(" red = ").append(red).append('\n'); 195 buffer.append(" green = ").append(green).append('\n'); 196 buffer.append(" blue = ").append(blue).append('\n'); 197 return buffer.toString(); 198 } 199 } 200