org.apache.fontbox.ttf.HorizontalMetricsTable 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.io.IOException;
/**
* A table in a true type font.
*
* @author Ben Litchfield
*/
public class HorizontalMetricsTable extends TTFTable
{
/**
* A tag that identifies this table type.
*/
public static final String TAG = "hmtx";
private int[] advanceWidth;
private short[] leftSideBearing;
private short[] nonHorizontalLeftSideBearing;
private int numHMetrics;
HorizontalMetricsTable(TrueTypeFont font)
{
super(font);
}
/**
* 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.
*/
void read(TrueTypeFont ttf, TTFDataStream data) throws IOException
{
HorizontalHeaderTable hHeader = ttf.getHorizontalHeader();
if (hHeader == null)
{
throw new IOException("Could not get hhea table");
}
numHMetrics = hHeader.getNumberOfHMetrics();
int numGlyphs = ttf.getNumberOfGlyphs();
int bytesRead = 0;
advanceWidth = new int[ numHMetrics ];
leftSideBearing = new short[ numHMetrics ];
for( int i=0; i