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Java > Open Source Codes > org > pdfbox > ttf > HorizontalMetricsTable


1 /**
2  * Copyright (c) 2004, www.pdfbox.org
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions are met:
7  *
8  * 1. Redistributions of source code must retain the above copyright notice,
9  * this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright notice,
11  * this list of conditions and the following disclaimer in the documentation
12  * and/or other materials provided with the distribution.
13  * 3. Neither the name of pdfbox; nor the names of its
14  * contributors may be used to endorse or promote products derived from this
15  * software without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20  * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
24  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
26  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  *
28  * http://www.pdfbox.org
29  *
30  */
31 package org.pdfbox.ttf;
32
33 import java.io.IOException JavaDoc;
34
35 /**
36  * A table in a true type font.
37  *
38  * @author Ben Litchfield (ben@csh.rit.edu)
39  * @version $Revision: 1.1 $
40  */
41 public class HorizontalMetricsTable extends TTFTable
42 {
43     /**
44      * A tag that identifies this table type.
45      */
46     public static final String JavaDoc TAG = "hmtx";
47     
48     private int[] advanceWidth;
49     private short[] leftSideBearing;
50     private short[] nonHorizontalLeftSideBearing;
51     
52     /**
53      * This will read the required data from the stream.
54      *
55      * @param ttf The font that is being read.
56      * @param data The stream to read the data from.
57      * @throws IOException If there is an error reading the data.
58      */
59     public void initData( TrueTypeFont ttf, TTFDataStream data ) throws IOException JavaDoc
60     {
61         HorizontalHeaderTable hHeader = ttf.getHorizontalHeader();
62         MaximumProfileTable maxp = ttf.getMaximumProfile();
63         int numHMetrics = hHeader.getNumberOfHMetrics();
64         int numGlyphs = maxp.getNumGlyphs();
65         
66         advanceWidth = new int[ numHMetrics ];
67         leftSideBearing = new short[ numHMetrics ];
68         for( int i=0; i<numHMetrics; i++ )
69         {
70             advanceWidth[i] = data.readUnsignedShort();
71             leftSideBearing[i] = data.readSignedShort();
72         }
73         
74         int numberNonHorizontal = numGlyphs - numHMetrics;
75         nonHorizontalLeftSideBearing = new short[ numberNonHorizontal ];
76         for( int i=0; i<numberNonHorizontal; i++ )
77         {
78             nonHorizontalLeftSideBearing[i] = data.readSignedShort();
79         }
80     }
81     /**
82      * @return Returns the advanceWidth.
83      */
84     public int[] getAdvanceWidth()
85     {
86         return advanceWidth;
87     }
88     /**
89      * @param advanceWidthValue The advanceWidth to set.
90      */
91     public void setAdvanceWidth(int[] advanceWidthValue)
92     {
93         this.advanceWidth = advanceWidthValue;
94     }
95 }
96
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