2004-04-09 09:05:39 -04:00
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/* ====================================================================
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Copyright 2002-2004 Apache Software Foundation
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==================================================================== */
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2004-04-09 07:45:38 -04:00
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package org.apache.poi.ddf;
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import org.apache.poi.util.HexDump;
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import org.apache.poi.util.LittleEndian;
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/**
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* This record simply holds the number of shapes in the drawing group and the
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* last shape id used for this drawing group.
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*
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* @author Glen Stampoultzis
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*/
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public class EscherDgRecord
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extends EscherRecord
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{
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public static final short RECORD_ID = (short) 0xF008;
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public static final String RECORD_DESCRIPTION = "MsofbtDg";
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private int field_1_numShapes;
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private int field_2_lastMSOSPID;
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/**
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* This method deserializes the record from a byte array.
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*
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* @param data The byte array containing the escher record information
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* @param offset The starting offset into <code>data</code>.
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* @param recordFactory May be null since this is not a container record.
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* @return The number of bytes read from the byte array.
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*/
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public int fillFields( byte[] data, int offset, EscherRecordFactory recordFactory )
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{
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int bytesRemaining = readHeader( data, offset );
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int pos = offset + 8;
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int size = 0;
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field_1_numShapes = LittleEndian.getInt( data, pos + size ); size += 4;
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field_2_lastMSOSPID = LittleEndian.getInt( data, pos + size ); size += 4;
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// bytesRemaining -= size;
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// remainingData = new byte[bytesRemaining];
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// System.arraycopy( data, pos + size, remainingData, 0, bytesRemaining );
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return getRecordSize();
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}
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/**
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* This method serializes this escher record into a byte array.
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*
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* @param offset The offset into <code>data</code> to start writing the record data to.
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* @param data The byte array to serialize to.
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* @param listener A listener to retrieve start and end callbacks. Use a <code>NullEscherSerailizationListener</code> to ignore these events.
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* @return The number of bytes written.
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* @see NullEscherSerializationListener
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*/
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public int serialize( int offset, byte[] data, EscherSerializationListener listener )
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{
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listener.beforeRecordSerialize( offset, getRecordId(), this );
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LittleEndian.putShort( data, offset, getOptions() );
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LittleEndian.putShort( data, offset + 2, getRecordId() );
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LittleEndian.putInt( data, offset + 4, 8 );
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LittleEndian.putInt( data, offset + 8, field_1_numShapes );
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LittleEndian.putInt( data, offset + 12, field_2_lastMSOSPID );
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// System.arraycopy( remainingData, 0, data, offset + 26, remainingData.length );
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// int pos = offset + 8 + 18 + remainingData.length;
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listener.afterRecordSerialize( offset + 16, getRecordId(), getRecordSize(), this );
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return getRecordSize();
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}
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/**
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* Returns the number of bytes that are required to serialize this record.
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*
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* @return Number of bytes
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*/
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public int getRecordSize()
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{
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return 8 + 8;
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}
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public short getRecordId()
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{
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return RECORD_ID;
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}
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/**
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* The short name for this record
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*/
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public String getRecordName()
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{
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return "Dg";
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}
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/**
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* Returns the string representation of this record.
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*/
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public String toString()
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{
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String nl = System.getProperty("line.separator");
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// String extraData;
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// ByteArrayOutputStream b = new ByteArrayOutputStream();
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// try
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// {
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// HexDump.dump(this.remainingData, 0, b, 0);
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// extraData = b.toString();
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// }
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// catch ( Exception e )
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// {
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// extraData = "error";
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// }
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return getClass().getName() + ":" + nl +
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" RecordId: 0x" + HexDump.toHex(RECORD_ID) + nl +
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" Options: 0x" + HexDump.toHex(getOptions()) + nl +
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" NumShapes: " + field_1_numShapes + nl +
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" LastMSOSPID: " + field_2_lastMSOSPID + nl;
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}
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/**
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* The number of shapes in this drawing group.
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*/
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public int getNumShapes()
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{
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return field_1_numShapes;
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}
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/**
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* The number of shapes in this drawing group.
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*/
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public void setNumShapes( int field_1_numShapes )
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{
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this.field_1_numShapes = field_1_numShapes;
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}
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/**
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* The last shape id used in this drawing group.
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*/
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public int getLastMSOSPID()
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{
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return field_2_lastMSOSPID;
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}
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/**
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* The last shape id used in this drawing group.
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*/
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public void setLastMSOSPID( int field_2_lastMSOSPID )
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{
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this.field_2_lastMSOSPID = field_2_lastMSOSPID;
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}
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/**
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* Gets the drawing group id for this record. This is encoded in the
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* instance part of the option record.
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*
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* @return a drawing group id.
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*/
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public short getDrawingGroupId()
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{
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return (short) ( getOptions() >> 4 );
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}
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public void incrementShapeCount()
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{
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this.field_1_numShapes++;
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}
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}
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