/*
* 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.pdfbox.pdmodel.font;
import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.apache.fontbox.afm.AFMParser;
import org.apache.fontbox.afm.CharMetric;
import org.apache.fontbox.afm.FontMetric;
import org.apache.fontbox.pfb.PfbParser;
import org.apache.pdfbox.cos.COSArray;
import org.apache.pdfbox.cos.COSDictionary;
import org.apache.pdfbox.cos.COSInteger;
import org.apache.pdfbox.cos.COSName;
import org.apache.pdfbox.encoding.AFMEncoding;
import org.apache.pdfbox.encoding.DictionaryEncoding;
import org.apache.pdfbox.encoding.Encoding;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.common.PDRectangle;
import org.apache.pdfbox.pdmodel.common.PDStream;
/**
* This is implementation of the Type1 Font with a afm and a pfb file.
*
* @author <a href="mailto:m.g.n@gmx.de">Michael Niedermair</a>
* @version $Revision: 1.5 $
*/
public class PDType1AfmPfbFont extends PDType1Font
{
/**
* the buffersize.
*/
private static final int BUFFERSIZE = 0xffff;
/**
* The font metric.
*/
private FontMetric metric;
/**
* Create a new object.
*
* @param doc The PDF document that will hold the embedded font.
* @param afmname The font filename.
* @throws IOException If there is an error loading the data.
*/
public PDType1AfmPfbFont(final PDDocument doc, final String afmname) throws IOException
{
super();
InputStream afmin = new BufferedInputStream(new FileInputStream(afmname), BUFFERSIZE);
String pfbname = afmname.replaceAll(".AFM", "").replaceAll(".afm", "") + ".pfb";
InputStream pfbin = new BufferedInputStream(new FileInputStream(pfbname), BUFFERSIZE);
load(doc, afmin, pfbin);
}
/**
* Create a new object.
*
* @param doc The PDF document that will hold the embedded font.
* @param afm The afm input.
* @param pfb The pfb input.
* @throws IOException If there is an error loading the data.
*/
public PDType1AfmPfbFont(final PDDocument doc, final InputStream afm, final InputStream pfb) throws IOException
{
super();
load(doc, afm, pfb);
}
/**
* This will load a afm and pfb to be embedding into a document.
*
* @param doc The PDF document that will hold the embedded font.
* @param afm The afm input.
* @param pfb The pfb input.
* @throws IOException If there is an error loading the data.
*/
private void load(final PDDocument doc, final InputStream afm, final InputStream pfb) throws IOException
{
PDFontDescriptorDictionary fd = new PDFontDescriptorDictionary();
setFontDescriptor(fd);
// read the pfb
PfbParser pfbparser = new PfbParser(pfb);
pfb.close();
PDStream fontStream = new PDStream(doc, pfbparser.getInputStream(), false);
fontStream.getStream().setInt("Length", pfbparser.size());
for (int i = 0; i < pfbparser.getLengths().length; i++)
{
fontStream.getStream().setInt("Length" + (i + 1), pfbparser.getLengths()[i]);
}
fontStream.addCompression();
fd.setFontFile(fontStream);
// read the afm
AFMParser parser = new AFMParser(afm);
parser.parse();
metric = parser.getResult();
setFontEncoding(afmToDictionary(new AFMEncoding(metric)));
// set the values
setBaseFont(metric.getFontName());
fd.setFontName(metric.getFontName());
fd.setFontFamily(metric.getFamilyName());
fd.setNonSymbolic(true);
fd.setFontBoundingBox(new PDRectangle(metric.getFontBBox()));
fd.setItalicAngle(metric.getItalicAngle());
fd.setAscent(metric.getAscender());
fd.setDescent(metric.getDescender());
fd.setCapHeight(metric.getCapHeight());
fd.setXHeight(metric.getXHeight());
fd.setAverageWidth(metric.getAverageCharacterWidth());
fd.setCharacterSet(metric.getCharacterSet());
// get firstchar, lastchar
int firstchar = 255;
int lastchar = 0;
// widths
List<CharMetric> listmetric = metric.getCharMetrics();
Encoding encoding = getFontEncoding();
int maxWidths = 256;
List<Float> widths = new ArrayList<Float>(maxWidths);
int zero = 250;
Iterator<CharMetric> iter = listmetric.iterator();
for (int i = 0; i < maxWidths; i++)
{
widths.add((float)zero);
}
while (iter.hasNext())
{
CharMetric m = iter.next();
int n = m.getCharacterCode();
if (n > 0)
{
firstchar = Math.min(firstchar, n);
lastchar = Math.max(lastchar, n);
if (m.getWx() > 0)
{
int width = Math.round(m.getWx());
widths.set(n, (float)width);
// germandbls has 2 character codes !! Don't ask me why .....
// StandardEncoding = 0373 = 251
// WinANSIEncoding = 0337 = 223
if (m.getName().equals("germandbls") && n != 223)
{
widths.set(0337, (float)width);
}
}
}
else
{
// my AFMPFB-Fonts has no character-codes for german umlauts
// so that I've to add them here by hand
if (m.getName().equals("adieresis"))
{
widths.set(0344, widths.get(encoding.getCode("a")));
}
else if (m.getName().equals("odieresis"))
{
widths.set(0366, widths.get(encoding.getCode("o")));
}
else if (m.getName().equals("udieresis"))
{
widths.set(0374, widths.get(encoding.getCode("u")));
}
else if (m.getName().equals("Adieresis"))
{
widths.set(0304, widths.get(encoding.getCode("A")));
}
else if (m.getName().equals("Odieresis"))
{
widths.set(0326, widths.get(encoding.getCode("O")));
}
else if (m.getName().equals("Udieresis"))
{
widths.set(0334, widths.get(encoding.getCode("U")));
}
}
}
setFirstChar(0);
setLastChar(255);
setWidths(widths);
}
/*
* This will generate a Encoding from the AFM-Encoding, because the AFM-Enconding isn't exported to the pdf and
* consequently the StandardEncoding is used so that any special character is missing I've copied the code from the
* pdfbox-forum posted by V0JT4 and made some additions concerning german umlauts see also
* https://sourceforge.net/forum/message.php?msg_id=4705274
*/
private DictionaryEncoding afmToDictionary(AFMEncoding encoding) throws java.io.IOException
{
COSArray array = new COSArray();
array.add(COSInteger.ZERO);
for (int i = 0; i < 256; i++)
{
array.add(COSName.getPDFName(encoding.getName(i)));
}
// my AFMPFB-Fonts has no character-codes for german umlauts
// so that I've to add them here by hand
array.set(0337 + 1, COSName.getPDFName("germandbls"));
array.set(0344 + 1, COSName.getPDFName("adieresis"));
array.set(0366 + 1, COSName.getPDFName("odieresis"));
array.set(0374 + 1, COSName.getPDFName("udieresis"));
array.set(0304 + 1, COSName.getPDFName("Adieresis"));
array.set(0326 + 1, COSName.getPDFName("Odieresis"));
array.set(0334 + 1, COSName.getPDFName("Udieresis"));
COSDictionary dictionary = new COSDictionary();
dictionary.setItem(COSName.NAME, COSName.ENCODING);
dictionary.setItem(COSName.DIFFERENCES, array);
dictionary.setItem(COSName.BASE_ENCODING, COSName.STANDARD_ENCODING);
return new DictionaryEncoding(dictionary);
}
@Override
public void clear()
{
super.clear();
metric = null;
}
}