| |
| /* ==================================================================== |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You under the Apache License, Version 2.0 |
| (the "License"); you may not use this file except in compliance with |
| the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| ==================================================================== */ |
| |
| |
| package org.apache.poi.hssf.record; |
| |
| import org.apache.poi.util.LittleEndian; |
| |
| /** |
| * Title: Delta Record<P> |
| * Description: controls the accuracy of the calculations<P> |
| * REFERENCE: PG 303 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P> |
| * @author Andrew C. Oliver (acoliver at apache dot org) |
| * @author Jason Height (jheight at chariot dot net dot au) |
| * @version 2.0-pre |
| */ |
| |
| public class DeltaRecord |
| extends Record |
| { |
| public final static short sid = 0x10; |
| public final static double DEFAULT_VALUE = 0.0010; // should be .001 |
| |
| // a double is an IEEE 8-byte float...damn IEEE and their goofy standards an |
| // ambiguous numeric identifiers |
| private double field_1_max_change; |
| |
| public DeltaRecord() |
| { |
| } |
| |
| public DeltaRecord(RecordInputStream in) |
| { |
| field_1_max_change = in.readDouble(); |
| } |
| |
| /** |
| * set the maximum change |
| * @param maxChange - maximum rounding error |
| */ |
| |
| public void setMaxChange(double maxChange) |
| { |
| field_1_max_change = maxChange; |
| } |
| |
| /** |
| * get the maximum change |
| * @return maxChange - maximum rounding error |
| */ |
| |
| public double getMaxChange() |
| { |
| return field_1_max_change; |
| } |
| |
| public String toString() |
| { |
| StringBuffer buffer = new StringBuffer(); |
| |
| buffer.append("[DELTA]\n"); |
| buffer.append(" .maxchange = ").append(getMaxChange()) |
| .append("\n"); |
| buffer.append("[/DELTA]\n"); |
| return buffer.toString(); |
| } |
| |
| public int serialize(int offset, byte [] data) |
| { |
| LittleEndian.putShort(data, 0 + offset, sid); |
| LittleEndian.putShort(data, 2 + offset, ( short ) 0x8); |
| LittleEndian.putDouble(data, 4 + offset, getMaxChange()); |
| return getRecordSize(); |
| } |
| |
| public int getRecordSize() |
| { |
| return 12; |
| } |
| |
| public short getSid() |
| { |
| return sid; |
| } |
| |
| public Object clone() { |
| DeltaRecord rec = new DeltaRecord(); |
| rec.field_1_max_change = field_1_max_change; |
| return rec; |
| } |
| } |