/*
* 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.io.IOException;
/**
* A table in a true type font.
*
* @author Ben Litchfield (ben@benlitchfield.com)
* @version $Revision: 1.1 $
*/
public class IndexToLocationTable extends TTFTable
{
private static final short SHORT_OFFSETS = 0;
private static final short LONG_OFFSETS = 1;
/**
* A tag that identifies this table type.
*/
public static final String TAG = "loca";
private long[] offsets;
/**
* This will read the required data from the stream.
*
* @param ttf The font that is being read.
* @param data The stream to read the data from.
* @throws IOException If there is an error reading the data.
*/
public void initData( TrueTypeFont ttf, TTFDataStream data ) throws IOException
{
HeaderTable head = ttf.getHeader();
MaximumProfileTable maxp = ttf.getMaximumProfile();
int numGlyphs = maxp.getNumGlyphs();
offsets = new long[ numGlyphs +1];
for( int i=0; i<numGlyphs+1; i++ )
{
if( head.getIndexToLocFormat() == SHORT_OFFSETS )
{
offsets[i] = data.readUnsignedShort() * 2;
}
else if( head.getIndexToLocFormat() == LONG_OFFSETS )
{
offsets[i] = data.readUnsignedInt();
}
else
{
throw new IOException( "Error:TTF.loca unknown offset format.");
}
}
}
/**
* @return Returns the offsets.
*/
public long[] getOffsets()
{
return offsets;
}
/**
* @param offsetsValue The offsets to set.
*/
public void setOffsets(long[] offsetsValue)
{
this.offsets = offsetsValue;
}
}
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