1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.fontbox.ttf;
18
19 import java.io.IOException;
20
21 /**
22 * A table in a true type font.
23 *
24 * @author Ben Litchfield (ben@benlitchfield.com)
25 * @version $Revision: 1.1 $
26 */
27 public class HorizontalMetricsTable extends TTFTable
28 {
29 /**
30 * A tag that identifies this table type.
31 */
32 public static final String TAG = "hmtx";
33
34 private int[] advanceWidth;
35 private short[] leftSideBearing;
36 private short[] nonHorizontalLeftSideBearing;
37
38 /**
39 * This will read the required data from the stream.
40 *
41 * @param ttf The font that is being read.
42 * @param data The stream to read the data from.
43 * @throws IOException If there is an error reading the data.
44 */
45 public void initData( TrueTypeFont ttf, TTFDataStream data ) throws IOException
46 {
47 HorizontalHeaderTable hHeader = ttf.getHorizontalHeader();
48 MaximumProfileTable maxp = ttf.getMaximumProfile();
49 int numHMetrics = hHeader.getNumberOfHMetrics();
50 int numGlyphs = maxp.getNumGlyphs();
51
52 advanceWidth = new int[ numHMetrics ];
53 leftSideBearing = new short[ numHMetrics ];
54 for( int i=0; i<numHMetrics; i++ )
55 {
56 advanceWidth[i] = data.readUnsignedShort();
57 leftSideBearing[i] = data.readSignedShort();
58 }
59
60 int numberNonHorizontal = numGlyphs - numHMetrics;
61 nonHorizontalLeftSideBearing = new short[ numberNonHorizontal ];
62 for( int i=0; i<numberNonHorizontal; i++ )
63 {
64 nonHorizontalLeftSideBearing[i] = data.readSignedShort();
65 }
66 }
67 /**
68 * @return Returns the advanceWidth.
69 */
70 public int[] getAdvanceWidth()
71 {
72 return advanceWidth;
73 }
74 /**
75 * @param advanceWidthValue The advanceWidth to set.
76 */
77 public void setAdvanceWidth(int[] advanceWidthValue)
78 {
79 this.advanceWidth = advanceWidthValue;
80 }
81 }