/*
* Copyright 2015 The Apache Software Foundation.
*
* Licensed 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.fontbox.ttf;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.Map.Entry;
import org.apache.fontbox.util.autodetect.FontFileFinder;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import org.junit.Test;
/**
*
* @author Tilman Hausherr
*/
public class TTFSubsetterTest
{
/**
* Test of PDFBOX-2854: empty subset with all tables.
*
* @throws java.io.IOException
*/
@Test
public void testEmptySubset() throws IOException
{
final File testFile = new File("src/test/resources/ttf/LiberationSans-Regular.ttf");
TrueTypeFont x = new TTFParser().parse(testFile);
TTFSubsetter ttfSubsetter = new TTFSubsetter(x);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ttfSubsetter.writeToStream(baos);
try (TrueTypeFont subset = new TTFParser(true).parse(new ByteArrayInputStream(baos.toByteArray())))
{
assertEquals(1, subset.getNumberOfGlyphs());
assertEquals(0, subset.nameToGID(".notdef"));
assertNotNull(subset.getGlyph().getGlyph(0));
}
}
/**
* Test of PDFBOX-2854: empty subset with selected tables.
*
* @throws java.io.IOException
*/
@Test
public void testEmptySubset2() throws IOException
{
final File testFile = new File("src/test/resources/ttf/LiberationSans-Regular.ttf");
TrueTypeFont x = new TTFParser().parse(testFile);
// List copied from TrueTypeEmbedder.java
List<String> tables = new ArrayList<>();
tables.add("head");
tables.add("hhea");
tables.add("loca");
tables.add("maxp");
tables.add("cvt ");
tables.add("prep");
tables.add("glyf");
tables.add("hmtx");
tables.add("fpgm");
tables.add("gasp");
TTFSubsetter ttfSubsetter = new TTFSubsetter(x, tables);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ttfSubsetter.writeToStream(baos);
try (TrueTypeFont subset = new TTFParser(true).parse(new ByteArrayInputStream(baos.toByteArray())))
{
assertEquals(1, subset.getNumberOfGlyphs());
assertEquals(0, subset.nameToGID(".notdef"));
assertNotNull(subset.getGlyph().getGlyph(0));
}
}
/**
* Test of PDFBOX-2854: subset with one glyph.
*
* @throws java.io.IOException
*/
@Test
public void testNonEmptySubset() throws IOException
{
final File testFile = new File("src/test/resources/ttf/LiberationSans-Regular.ttf");
TrueTypeFont full = new TTFParser().parse(testFile);
TTFSubsetter ttfSubsetter = new TTFSubsetter(full);
ttfSubsetter.add('a');
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ttfSubsetter.writeToStream(baos);
try (TrueTypeFont subset = new TTFParser(true).parse(new ByteArrayInputStream(baos.toByteArray())))
{
assertEquals(2, subset.getNumberOfGlyphs());
assertEquals(0, subset.nameToGID(".notdef"));
assertEquals(1, subset.nameToGID("a"));
assertNotNull(subset.getGlyph().getGlyph(0));
assertNotNull(subset.getGlyph().getGlyph(1));
assertNull(subset.getGlyph().getGlyph(2));
assertEquals(full.getAdvanceWidth(full.nameToGID("a")),
subset.getAdvanceWidth(subset.nameToGID("a")));
assertEquals(full.getHorizontalMetrics().getLeftSideBearing(full.nameToGID("a")),
subset.getHorizontalMetrics().getLeftSideBearing(subset.nameToGID("a")));
}
}
/**
* Test of PDFBOX-3319: check that widths and left side bearings in partially monospaced font
* are kept.
*
* @throws java.io.IOException
*/
@Test
public void testPDFBox3319() throws IOException
{
System.out.println("Searching for SimHei font...");
FontFileFinder fontFileFinder = new FontFileFinder();
List<URI> files = fontFileFinder.find();
File simhei = null;
for (URI uri : files)
{
if (uri.getPath() != null && uri.getPath().toLowerCase().endsWith("simhei.ttf"))
{
simhei = new File(uri);
}
}
if (simhei == null)
{
System.err.println("SimHei font not available on this machine, test skipped");
return;
}
System.out.println("SimHei font found!");
TrueTypeFont full = new TTFParser().parse(simhei);
// List copied from TrueTypeEmbedder.java
// Without it, the test would fail because of missing post table in source font
List<String> tables = new ArrayList<>();
tables.add("head");
tables.add("hhea");
tables.add("loca");
tables.add("maxp");
tables.add("cvt ");
tables.add("prep");
tables.add("glyf");
tables.add("hmtx");
tables.add("fpgm");
tables.add("gasp");
TTFSubsetter ttfSubsetter = new TTFSubsetter(full, tables);
String chinese = "中国你好!";
for (int offset = 0; offset < chinese.length();)
{
int codePoint = chinese.codePointAt(offset);
ttfSubsetter.add(codePoint);
offset += Character.charCount(codePoint);
}
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ttfSubsetter.writeToStream(baos);
try (TrueTypeFont subset = new TTFParser(true).parse(new ByteArrayInputStream(baos.toByteArray())))
{
assertEquals(6, subset.getNumberOfGlyphs());
for (Entry<Integer, Integer> entry : ttfSubsetter.getGIDMap().entrySet())
{
Integer newGID = entry.getKey();
Integer oldGID = entry.getValue();
assertEquals(full.getAdvanceWidth(oldGID), subset.getAdvanceWidth(newGID));
assertEquals(full.getHorizontalMetrics().getLeftSideBearing(oldGID),
subset.getHorizontalMetrics().getLeftSideBearing(newGID));
}
}
}
/**
* Test of PDFBOX-3379: check that left side bearings in partially monospaced font are kept.
*
* @throws java.io.IOException
*/
@Test
public void testPDFBox3379() throws IOException
{
InputStream is;
try
{
// don't want to include this font into source download (300KB)
System.out.println("Downloading DejaVuSansMono font...");
is = new URL("https://issues.apache.org/jira/secure/attachment/12809395/DejaVuSansMono.ttf").openStream();
System.out.println("Download finished!");
}
catch (IOException ex)
{
System.err.println("DejaVuSansMono font could not be downloaded, test skipped");
return;
}
TrueTypeFont full = new TTFParser().parse(is);
TTFSubsetter ttfSubsetter = new TTFSubsetter(full);
ttfSubsetter.add('A');
ttfSubsetter.add(' ');
ttfSubsetter.add('B');
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ttfSubsetter.writeToStream(baos);
try (TrueTypeFont subset = new TTFParser().parse(new ByteArrayInputStream(baos.toByteArray())))
{
assertEquals(4, subset.getNumberOfGlyphs());
assertEquals(0, subset.nameToGID(".notdef"));
assertEquals(1, subset.nameToGID("space"));
assertEquals(2, subset.nameToGID("A"));
assertEquals(3, subset.nameToGID("B"));
String [] names = new String[]{"A","B","space"};
for (String name : names)
{
assertEquals(full.getAdvanceWidth(full.nameToGID(name)),
subset.getAdvanceWidth(subset.nameToGID(name)));
assertEquals(full.getHorizontalMetrics().getLeftSideBearing(full.nameToGID(name)),
subset.getHorizontalMetrics().getLeftSideBearing(subset.nameToGID(name)));
}
}
}
/**
* Test of PDFBOX-3757: check that postcript names that are not part of WGL4Names don't get
* shuffled in buildPostTable().
*
* @throws java.io.IOException
*/
@Test
public void testPDFBox3757() throws IOException
{
final File testFile = new File("src/test/resources/ttf/LiberationSans-Regular.ttf");
TrueTypeFont ttf = new TTFParser().parse(testFile);
TTFSubsetter ttfSubsetter = new TTFSubsetter(ttf);
ttfSubsetter.add('Ö');
ttfSubsetter.add('\u200A');
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ttfSubsetter.writeToStream(baos);
try (TrueTypeFont subset = new TTFParser(true).parse(new ByteArrayInputStream(baos.toByteArray())))
{
assertEquals(5, subset.getNumberOfGlyphs());
assertEquals(0, subset.nameToGID(".notdef"));
assertEquals(1, subset.nameToGID("O"));
assertEquals(2, subset.nameToGID("Odieresis"));
assertEquals(3, subset.nameToGID("uni200A"));
assertEquals(4, subset.nameToGID("dieresis.uc"));
PostScriptTable pst = subset.getPostScript();
assertEquals(pst.getName(0), ".notdef");
assertEquals(pst.getName(1), "O");
assertEquals(pst.getName(2), "Odieresis");
assertEquals(pst.getName(3), "uni200A");
assertEquals(pst.getName(4), "dieresis.uc");
assertTrue("Hair space path should be empty", subset.getPath("uni200A").getBounds2D().isEmpty());
assertFalse("UC dieresis path should not be empty", subset.getPath("dieresis.uc").getBounds2D().isEmpty());
}
}
}