210 lines
6.6 KiB
Java
Executable File
210 lines
6.6 KiB
Java
Executable File
/* ====================================================================
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. 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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package org.apache.poi.hslf.record;
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import java.io.ByteArrayInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.util.zip.InflaterInputStream;
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import org.apache.poi.util.LittleEndian;
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import org.apache.poi.util.POILogger;
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/**
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* Ruler of a text as it differs from the style's ruler settings.
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*
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* @author Yegor Kozlov
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*/
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public class TextRulerAtom extends RecordAtom {
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/**
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* Record header.
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*/
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private byte[] _header;
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/**
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* Record data.
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*/
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private byte[] _data;
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//ruler internals
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private int defaultTabSize;
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private int numLevels;
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private int[] tabStops;
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private int[] bulletOffsets = new int[5];
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private int[] textOffsets = new int[5];
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/**
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* Constructs a new empty ruler atom.
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*/
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public TextRulerAtom() {
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_header = new byte[8];
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_data = new byte[0];
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LittleEndian.putShort(_header, 2, (short)getRecordType());
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LittleEndian.putInt(_header, 4, _data.length);
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}
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/**
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* Constructs the ruler atom record from its
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* source data.
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*
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* @param source the source data as a byte array.
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* @param start the start offset into the byte array.
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* @param len the length of the slice in the byte array.
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*/
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protected TextRulerAtom(byte[] source, int start, int len) {
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// Get the header.
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_header = new byte[8];
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System.arraycopy(source,start,_header,0,8);
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// Get the record data.
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_data = new byte[len-8];
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System.arraycopy(source,start+8,_data,0,len-8);
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try {
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read();
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} catch (Exception e){
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logger.log(POILogger.ERROR, "Failed to parse TextRulerAtom: " + e.getMessage());
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e.printStackTrace();
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}
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}
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/**
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* Gets the record type.
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*
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* @return the record type.
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*/
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public long getRecordType() {
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return RecordTypes.TextRulerAtom.typeID;
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}
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/**
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* Write the contents of the record back, so it can be written
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* to disk.
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*
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* @param out the output stream to write to.
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* @throws java.io.IOException if an error occurs.
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*/
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public void writeOut(OutputStream out) throws IOException {
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out.write(_header);
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out.write(_data);
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}
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/**
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* Read the record bytes and initialize the internal variables
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*/
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private void read(){
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int pos = 0;
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short mask = LittleEndian.getShort(_data); pos += 4;
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short val;
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int[] bits = {1, 0, 2, 3, 8, 4, 9, 5, 10, 6, 11, 7, 12};
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for (int i = 0; i < bits.length; i++) {
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if((mask & 1 << bits[i]) != 0){
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switch (bits[i]){
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case 0:
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//defaultTabSize
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defaultTabSize = LittleEndian.getShort(_data, pos); pos += 2;
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break;
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case 1:
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//numLevels
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numLevels = LittleEndian.getShort(_data, pos); pos += 2;
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break;
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case 2:
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//tabStops
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val = LittleEndian.getShort(_data, pos); pos += 2;
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tabStops = new int[val*2];
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for (int j = 0; j < tabStops.length; j++) {
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tabStops[j] = LittleEndian.getUShort(_data, pos); pos += 2;
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}
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break;
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case 3:
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case 4:
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case 5:
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case 6:
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case 7:
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//bullet.offset
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val = LittleEndian.getShort(_data, pos); pos += 2;
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bulletOffsets[bits[i]-3] = val;
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break;
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case 8:
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case 9:
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case 10:
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case 11:
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case 12:
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//text.offset
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val = LittleEndian.getShort(_data, pos); pos += 2;
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textOffsets[bits[i]-8] = val;
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break;
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}
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}
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}
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}
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/**
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* Default distance between tab stops, in master coordinates (576 dpi).
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*/
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public int getDefaultTabSize(){
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return defaultTabSize;
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}
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/**
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* Number of indent levels (maximum 5).
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*/
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public int getNumberOfLevels(){
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return numLevels;
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}
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/**
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* Default distance between tab stops, in master coordinates (576 dpi).
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*/
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public int[] getTabStops(){
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return tabStops;
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}
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/**
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* Paragraph's distance from shape's left margin, in master coordinates (576 dpi).
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*/
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public int[] getTextOffsets(){
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return textOffsets;
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}
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/**
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* First line of paragraph's distance from shape's left margin, in master coordinates (576 dpi).
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*/
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public int[] getBulletOffsets(){
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return bulletOffsets;
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}
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public static TextRulerAtom getParagraphInstance(){
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byte[] data = new byte[] {
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0x00, 0x00, (byte)0xA6, 0x0F, 0x0A, 0x00, 0x00, 0x00,
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0x10, 0x03, 0x00, 0x00, (byte)0xF9, 0x00, 0x41, 0x01, 0x41, 0x01
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};
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TextRulerAtom ruler = new TextRulerAtom(data, 0, data.length);
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return ruler;
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}
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public void setParagraphIndent(short tetxOffset, short bulletOffset){
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LittleEndian.putShort(_data, 4, tetxOffset);
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LittleEndian.putShort(_data, 6, bulletOffset);
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LittleEndian.putShort(_data, 8, bulletOffset);
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}
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}
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