org.apache.fop.pdf.PDFWArray Maven / Gradle / Ivy
/*
* 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.
*/
/* $Id: PDFWArray.java 1761020 2016-09-16 11:17:35Z ssteiner $ */
package org.apache.fop.pdf;
import java.util.List;
/**
* Class representing a W array for CID fonts.
*/
public class PDFWArray {
/**
* The metrics
*/
private List entries = new java.util.ArrayList();
/**
* Default constructor
*/
public PDFWArray() {
}
/**
* Convenience constructor
* @param metrics the metrics array to initially add
*/
public PDFWArray(int[] metrics) {
addEntry(0, metrics);
}
/**
* Add an entry for single starting CID.
* i.e. in the form "c [w ...]"
*
* @param start the starting CID value.
* @param metrics the metrics array.
*/
public void addEntry(int start, int[] metrics) {
entries.add(new Entry(start, metrics));
}
/**
* Add an entry for a range of CIDs (/W element on p 213)
*
* @param first the first CID in the range
* @param last the last CID in the range
* @param width the width for all CIDs in the range
*/
public void addEntry(int first, int last, int width) {
entries.add(new int[] {
first, last, width
});
}
/**
* Add an entry for a range of CIDs (/W2 element on p 210)
*
* @param first the first CID in the range
* @param last the last CID in the range
* @param width the width for all CIDs in the range
* @param posX the x component for the vertical position vector
* @param posY the y component for the vertical position vector
*/
public void addEntry(int first, int last, int width, int posX, int posY) {
entries.add(new int[] {
first, last, width, posX, posY
});
}
/**
* Convert this object to PDF code.
* @return byte[] the PDF code
*/
public byte[] toPDF() {
return PDFDocument.encode(toPDFString());
}
/**
* Convert this object to PDF code.
* @return String the PDF code
*/
public String toPDFString() {
StringBuffer p = new StringBuffer();
p.append("[ ");
int len = entries.size();
for (Object entry : entries) {
if (entry instanceof int[]) {
int[] line = (int[]) entry;
for (int aLine : line) {
p.append(aLine);
p.append(" ");
}
} else {
((Entry) entry).fillInPDF(p);
}
}
p.append("]");
return p.toString();
}
/**
* Inner class for entries in the form "c [w ...]"
*/
private static class Entry {
private int start;
private int[] metrics;
public Entry(int s, int[] m) {
start = s;
metrics = m;
}
public void fillInPDF(StringBuffer p) {
// p.setLength(0);
p.append(start);
p.append(" [");
for (int metric : metrics) {
p.append(metric);
p.append(" ");
}
p.append("] ");
}
}
}