documentation for powerpoint support
git-svn-id: https://svn.apache.org/repos/asf/jakarta/poi/trunk@353702 13f79535-47bb-0310-9956-ffa450edef68
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Avik Sengupta
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<menu-item label="HSSF" href="hssf/index.html"/>
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<menu-item label="HWPF" href="hwpf/index.html"/>
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<menu-item label="HPSF" href="hpsf/index.html"/>
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<menu-item label="POI-Ruby" href="poi-ruby.html"/>
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<menu-item label="HSLF" href="hslf/index.html"/>
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<menu-item label="POI-Ruby" href="poi-ruby.html"/>
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<menu-item label="POI-Utils" href="utils/index.html"/>
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<menu-item label="Download" href="ext:download"/>
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</menu>
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src/documentation/content/xdocs/hslf/book.xml
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src/documentation/content/xdocs/hslf/book.xml
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<?xml version="1.0"?>
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<!-- Copyright (C) 2005 The Apache Software Foundation. All rights reserved. -->
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<!DOCTYPE book PUBLIC "-//APACHE//DTD Cocoon Documentation Book V1.0//EN" "../dtd/book-cocoon-v10.dtd">
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<book software="POI Project"
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title="HSSF"
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copyright="@year@ POI Project">
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<menu label="Jakarta POI">
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<menu-item label="Top" href="../index.html"/>
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</menu>
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<menu label="HSLF">
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<menu-item label="Overview" href="index.html"/>
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<menu-item label="Quick Guide" href="quick-guide.html"/>
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</menu>
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</book>
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src/documentation/content/xdocs/hslf/index.xml
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src/documentation/content/xdocs/hslf/index.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<!-- Copyright (C) 2004 The Apache Software Foundation. All rights reserved. -->
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<!DOCTYPE document PUBLIC "-//APACHE//DTD Documentation V1.1//EN" "../dtd/document-v11.dtd">
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<document>
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<header>
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<title>POI-HSLF - Java API To Access Microsoft Powerpoint Format Files</title>
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<subtitle>Overview</subtitle>
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<authors>
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<person name="Avik Sengupta" email="avik at apache dot org"/>
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</authors>
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</header>
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<body>
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<section>
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<title>Overview</title>
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<p>HSLF is the POI Project's pure Java implementation of the Powerpoint file format.</p>
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<p>HSSF provides a way to read powerpoint presentations, and extract text from it.
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It also provides some (currently limited) edit capabilities.
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</p>
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<note> This code currently lives the scratchpad area of the POI CVS repository.
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Ensure that you have the scratchpad jar or the scratchpad build area in your
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classpath before experimenting with this code.
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</note>
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<p>The <link href="./quick-guide.html">quick guide</link> documentation provides
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information on using this API. Comments and fixes gratefully accepted on the POI
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dev mailing lists.</p>
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</section>
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</body>
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</document>
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src/documentation/content/xdocs/hslf/quick-guide.xml
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src/documentation/content/xdocs/hslf/quick-guide.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<!-- Copyright (C) 2004 The Apache Software Foundation. All rights reserved. -->
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<!DOCTYPE document PUBLIC "-//APACHE//DTD Documentation V1.1//EN" "../dtd/document-v11.dtd">
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<document>
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<header>
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<title>POI-HSLF - A Quick Guide</title>
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<subtitle>Overview</subtitle>
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<authors>
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<person name="Nick Burch" email="nick at torchbox dot com"/>
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</authors>
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</header>
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<body>
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<section><title>Basic Text Extraction</title>
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<p>For basic text extraction, make use of
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<code>org.apache.poi.extractor.PowerPointExtractor</code>. It accepts a file or an input
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stream. The <code>getText()</code> method can be used to get the text from the slides,
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from the notes, or from both.
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</p>
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</section>
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<section><title>Specific Text Extraction</title>
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<p>To get specific bits of text, first create a <code>org.apache.poi.usermodel.SlideShow</code>
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(from a <code>org.apache.poi.HSLFSlideShow</code>, which accepts a file or an input
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stream). Use <code>getSlides()</code> and <code>getNotes()</code> to get the slides and notes.
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These can be queried to get their page ID (though they should be returned
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in the right order). You can also call <code>getTextRuns()</code> on these, to get their
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blocks of text. From the <code>TextRun</code>, you can extract the text, and check
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what type of text it is (eg Body, Title)
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</p>
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</section>
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<section><title>Changing Text</title>
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<p>It is possible to change the text via <code>TextRun.setText(String)</code>. However, if
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the length of the text is changed, things will break because PowerPoint has
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internal file references in byte offsets, which are not yet all updated when
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the size changes.
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</p>
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</section>
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<section><title>Guide to key classes</title>
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<ul>
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<li><code>org.apache.poi.hslf.HSLFSlideShow</code>
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Handles reading in and writing out files. Generates a tree of the records
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in the file
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</li>
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<li><code>org.apache.poi.hslf.usermode.SlideShow</code>
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Builds up model entries from the records, and presents a user facing
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view of the file
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</li>
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<li><code>org.apache.poi.hslf.extractor.PowerPointExtractor</code>
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Uses the model code to allow extraction of text from files
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</li>
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</ul>
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</section>
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</body>
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</document>
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