org.apache.fontbox.ttf.SubstitutingCmapLookup 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.
*/
package org.apache.fontbox.ttf;
import java.util.List;
/**
* A cmap lookup that performs substitution via the 'GSUB' table.
*
* @author Aaron Madlon-Kay
*/
public class SubstitutingCmapLookup implements CmapLookup
{
private final CmapSubtable cmap;
private final GlyphSubstitutionTable gsub;
private final List enabledFeatures;
public SubstitutingCmapLookup(CmapSubtable cmap, GlyphSubstitutionTable gsub,
List enabledFeatures)
{
this.cmap = cmap;
this.gsub = gsub;
this.enabledFeatures = enabledFeatures;
}
@Override
public int getGlyphId(int characterCode)
{
int gid = cmap.getGlyphId(characterCode);
String[] scriptTags = OpenTypeScript.getScriptTags(characterCode);
return gsub.getSubstitution(gid, scriptTags, enabledFeatures);
}
@Override
public List getCharCodes(int gid)
{
return cmap.getCharCodes(gsub.getUnsubstitution(gid));
}
}