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## org.apache.poi.hdgf
Class HDGFDiagram

    java.lang.Object
      org.apache.poi.POIDocument
          org.apache.poi.POIReadOnlyDocument
              org.apache.poi.hdgf.HDGFDiagram

All Implemented Interfaces:
  java.io.Closeable

    public final class HDGFDiagram

extends POIReadOnlyDocument

See http://www.redferni.uklinux.net/visio/ http://www.gnome.ru/projects/docs/vsdocs.html http://www.gnome.ru/projects/docs/slide1.png http://www.gnome.ru/projects/docs/slide2.png

Constructor Summary
`HDGFDiagram(DirectoryNode dir)`
`HDGFDiagram(NPOIFSFileSystem fs)`
`HDGFDiagram(POIFSFileSystem fs)`

Method Summary
`void` | `debug()` Prints out some simple debug on the base contents of the file.
`long` | `getDocumentSize()`
`Stream[]` | `getTopLevelStreams()` Returns all the top level streams, which are the streams pointed to by the TrailerStream.
`TrailerStream` | `getTrailerStream()` Returns the TrailerStream, which is at the root of the tree of Streams.
`static void` | `main(java.lang.String[] args)` For testing only

Methods inherited from class org.apache.poi.POIReadOnlyDocument
`write, write, write`

Methods inherited from class org.apache.poi.POIDocument
`clearDirectory, close, createInformationProperties, getDirectory, getDocumentSummaryInformation, getEncryptedPropertyStreamName, getEncryptionInfo, getPropertySet, getPropertySet, getSummaryInformation, initDirectory, readProperties, replaceDirectory, validateInPlaceWritePossible, writeProperties, writeProperties, writeProperties, writePropertySet`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### HDGFDiagram

    public HDGFDiagram(POIFSFileSystem fs)
                throws java.io.IOException

Throws:
  `java.io.IOException`

### HDGFDiagram

    public HDGFDiagram(NPOIFSFileSystem fs)
                throws java.io.IOException

Throws:
  `java.io.IOException`

### HDGFDiagram

    public HDGFDiagram(DirectoryNode dir)
                throws java.io.IOException

Throws:
  `java.io.IOException`

Method Detail

### getTrailerStream

    public TrailerStream getTrailerStream()

  Returns the TrailerStream, which is at the root of the tree of Streams.

### getTopLevelStreams

    public Stream[] getTopLevelStreams()

  Returns all the top level streams, which are the streams pointed to by the TrailerStream.

### getDocumentSize

    public long getDocumentSize()

### debug

    public void debug()

  Prints out some simple debug on the base contents of the file.

  See Also:
    `VSDDumper`

### main

    public static void main(java.lang.String[] args)
                     throws java.lang.Exception

  For testing only

  Throws:
    `java.lang.Exception`

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Copyright 2017 The Apache Software Foundation or its licensors, as applicable.