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Java > Open Source Codes > org > pdfbox > examples > util > PrintTextLocations


1 /**
2  * Copyright (c) 2005, 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.examples.util;
32
33 import org.pdfbox.exceptions.InvalidPasswordException;
34
35
36 import org.pdfbox.pdmodel.PDDocument;
37 import org.pdfbox.pdmodel.PDPage;
38 import org.pdfbox.util.PDFTextStripper;
39 import org.pdfbox.util.TextPosition;
40
41 import java.io.IOException JavaDoc;
42
43 import java.util.List JavaDoc;
44
45 /**
46  * This is an example on how to get some x/y coordinates of text.
47  *
48  * Usage: java org.pdfbox.examples.util.PrintTextLocations <input-pdf>
49  *
50  * @author <a HREF="mailto:ben@benlitchfield.com">Ben Litchfield</a>
51  * @version $Revision: 1.6 $
52  */
53 public class PrintTextLocations extends PDFTextStripper
54 {
55     /**
56      * Default constructor.
57      *
58      * @throws IOException If there is an error loading text stripper properties.
59      */
60     public PrintTextLocations() throws IOException JavaDoc
61     {
62         super.setSortByPosition( true );
63     }
64     
65     /**
66      * This will print the documents data.
67      *
68      * @param args The command line arguments.
69      *
70      * @throws Exception If there is an error parsing the document.
71      */
72     public static void main( String JavaDoc[] args ) throws Exception JavaDoc
73     {
74         if( args.length != 1 )
75         {
76             usage();
77         }
78         else
79         {
80             PDDocument document = null;
81             try
82             {
83                 document = PDDocument.load( args[0] );
84                 if( document.isEncrypted() )
85                 {
86                     try
87                     {
88                         document.decrypt( "" );
89                     }
90                     catch( InvalidPasswordException e )
91                     {
92                         System.err.println( "Error: Document is encrypted with a password." );
93                         System.exit( 1 );
94                     }
95                 }
96                 PrintTextLocations printer = new PrintTextLocations();
97                 List JavaDoc allPages = document.getDocumentCatalog().getAllPages();
98                 for( int i=0; i<allPages.size(); i++ )
99                 {
100                     PDPage page = (PDPage)allPages.get( i );
101                     System.out.println( "Processing page: " + i );
102                     printer.processStream( page, page.findResources(), page.getContents().getStream() );
103                 }
104             }
105             finally
106             {
107                 if( document != null )
108                 {
109                     document.close();
110                 }
111             }
112         }
113     }
114     
115     /**
116      * A method provided as an event interface to allow a subclass to perform
117      * some specific functionality when a character needs to be displayed.
118      *
119      * @param text The character to be displayed.
120      */
121     protected void showCharacter( TextPosition text )
122     {
123         System.out.println( "String[" + text.getX() + "," +
124                 text.getY() + " fs=" + text.getFontSize() + " xscale=" +
125                 text.getXScale() + " height=" + text.getHeight() + " width=" +
126                 text.getWidth() + "]" + text.getCharacter() );
127     }
128
129     /**
130      * This will print the usage for this document.
131      */
132     private static void usage()
133     {
134         System.err.println( "Usage: java org.pdfbox.examples.pdmodel.PrintTextLocations <input-pdf>" );
135     }
136
137 }
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