| /* |
| |
| 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.batik.svggen.font.table; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.IOException; |
| import java.io.RandomAccessFile; |
| |
| /** |
| * @version $Id$ |
| * @author <a href="mailto:david@steadystate.co.uk">David Schweinsberg</a> |
| */ |
| public class HmtxTable implements Table { |
| |
| private byte[] buf = null; |
| private int[] hMetrics = null; |
| private short[] leftSideBearing = null; |
| |
| protected HmtxTable(DirectoryEntry de,RandomAccessFile raf) throws IOException { |
| raf.seek(de.getOffset()); |
| buf = new byte[de.getLength()]; |
| raf.read(buf); |
| /* |
| TableMaxp t_maxp = (TableMaxp) td.getEntryByTag(maxp).getTable(); |
| TableHhea t_hhea = (TableHhea) td.getEntryByTag(hhea).getTable(); |
| int lsbCount = t_maxp.getNumGlyphs() - t_hhea.getNumberOfHMetrics(); |
| hMetrics = new int[t_hhea.getNumberOfHMetrics()]; |
| for (int i = 0; i < t_hhea.getNumberOfHMetrics(); i++) { |
| hMetrics[i] = raf.readInt(); |
| } |
| if (lsbCount > 0) { |
| leftSideBearing = new short[lsbCount]; |
| for (int i = 0; i < lsbCount; i++) { |
| leftSideBearing[i] = raf.readShort(); |
| } |
| } |
| */ |
| } |
| |
| public void init(int numberOfHMetrics, int lsbCount) { |
| if (buf == null) { |
| return; |
| } |
| hMetrics = new int[numberOfHMetrics]; |
| ByteArrayInputStream bais = new ByteArrayInputStream(buf); |
| for (int i = 0; i < numberOfHMetrics; i++) { |
| // pack 4 bytes from bais into an int and store in hMetrics[] |
| // bais.read() returns an int 0..255, so no need to worry for sign-extension here |
| hMetrics[i] = (bais.read()<<24 | bais.read()<<16 | |
| bais.read()<< 8 | bais.read()); |
| } |
| if (lsbCount > 0) { |
| leftSideBearing = new short[lsbCount]; |
| for (int i = 0; i < lsbCount; i++) { |
| leftSideBearing[i] = (short)(bais.read()<<8 | bais.read()); |
| } |
| } |
| buf = null; |
| } |
| |
| public int getAdvanceWidth(int i) { |
| if (hMetrics == null) { |
| return 0; |
| } |
| if (i < hMetrics.length) { |
| return hMetrics[i] >> 16; |
| } else { |
| return hMetrics[hMetrics.length - 1] >> 16; |
| } |
| } |
| |
| public short getLeftSideBearing(int i) { |
| if (hMetrics == null) { |
| return 0; |
| } |
| if (i < hMetrics.length) { |
| return (short)(hMetrics[i] & 0xffff); |
| } else { |
| return leftSideBearing[i - hMetrics.length]; |
| } |
| } |
| |
| public int getType() { |
| return hmtx; |
| } |
| } |