/*
* 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: TTFFontLoader.java 629131 2008-02-19 15:47:48Z jeremias $ */
package org.apache.fop.fonts.truetype;
import java.io.IOException;
import java.io.InputStream;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.apache.commons.io.IOUtils;
import org.apache.fop.fonts.BFEntry;
import org.apache.fop.fonts.CIDFontType;
import org.apache.fop.fonts.FontLoader;
import org.apache.fop.fonts.FontResolver;
import org.apache.fop.fonts.MultiByteFont;
/**
* Loads a font into memory directly from the original font file.
*/
public class TTFFontLoader extends FontLoader {
private MultiByteFont multiFont;
/**
* Default constructor
* @param fontFileURI the URI representing the font file
* @param resolver the FontResolver for font URI resolution
*/
public TTFFontLoader(String fontFileURI, FontResolver resolver) {
super(fontFileURI, resolver);
}
/** {@inheritDoc} */
protected void read() throws IOException {
InputStream in = openFontUri(resolver, this.fontFileURI);
try {
TTFFile ttf = new TTFFile();
FontFileReader reader = new FontFileReader(in);
boolean supported = ttf.readFont(reader, null);
if (!supported) {
throw new IOException("TrueType font is not supported: " + fontFileURI);
}
buildFont(ttf);
loaded = true;
} finally {
IOUtils.closeQuietly(in);
}
}
private void buildFont(TTFFile ttf) {
if (ttf.isCFF()) {
throw new UnsupportedOperationException(
"OpenType fonts with CFF data are not supported, yet");
}
multiFont = new MultiByteFont();
multiFont.setResolver(this.resolver);
returnFont = multiFont;
returnFont.setFontName(ttf.getPostScriptName());
returnFont.setFullName(ttf.getFullName());
returnFont.setFamilyNames(ttf.getFamilyNames());
returnFont.setFontSubFamilyName(ttf.getSubFamilyName());
//multiFont.setTTCName(ttcName)
returnFont.setCapHeight(ttf.getCapHeight());
returnFont.setXHeight(ttf.getXHeight());
returnFont.setAscender(ttf.getLowerCaseAscent());
returnFont.setDescender(ttf.getLowerCaseDescent());
returnFont.setFontBBox(ttf.getFontBBox());
//returnFont.setFirstChar(ttf.getFirstChar();)
returnFont.setFlags(ttf.getFlags());
returnFont.setStemV(Integer.parseInt(ttf.getStemV())); //not used for TTF
returnFont.setItalicAngle(Integer.parseInt(ttf.getItalicAngle()));
returnFont.setMissingWidth(0);
returnFont.setWeight(ttf.getWeightClass());
multiFont.setCIDType(CIDFontType.CIDTYPE2);
int[] wx = ttf.getWidths();
multiFont.setWidthArray(wx);
List entries = ttf.getCMaps();
BFEntry[] bfentries = new BFEntry[entries.size()];
int pos = 0;
Iterator iter = ttf.getCMaps().listIterator();
while (iter.hasNext()) {
TTFCmapEntry ce = (TTFCmapEntry)iter.next();
bfentries[pos] = new BFEntry(ce.getUnicodeStart(), ce.getUnicodeEnd(),
ce.getGlyphStartIndex());
pos++;
}
multiFont.setBFEntries(bfentries);
copyKerning(ttf, true);
multiFont.setEmbedFileName(this.fontFileURI);
}
/**
* Copy kerning information.
*/
private void copyKerning(TTFFile ttf, boolean isCid) {
// Get kerning
Iterator iter;
if (isCid) {
iter = ttf.getKerning().keySet().iterator();
} else {
iter = ttf.getAnsiKerning().keySet().iterator();
}
while (iter.hasNext()) {
Integer kpx1 = (Integer)iter.next();
Map h2;
if (isCid) {
h2 = (Map)ttf.getKerning().get(kpx1);
} else {
h2 = (Map)ttf.getAnsiKerning().get(kpx1);
}
returnFont.putKerningEntry(kpx1, h2);
}
}
}