org.pentaho.reporting.libraries.pixie.wmf

Class MfHeader

java.lang.Object

org.pentaho.reporting.libraries.pixie.wmf.Buffer

org.pentaho.reporting.libraries.pixie.wmf.MfHeader

public class MfHeader
extends Buffer

A buffer which represents a Metafile header.

The meta file header has the following structure

offset	length in bytes	name	meaning
0x00	2	mfType	MetaFile type: 0x1 = memory based meta file, 0x2 = disk based meta file
0x02	2	mfHeader	length of header in words (16bit)
0x04	2	mfVersion	Windows version used to save the file as BCD number. 0x30 for windows 3.0, 0x31 for win3.1 etc.
0x06	4	mfSize	File length in words
0x0A	2	mfNoObj	maximum number of objects in the file
0x0c	4	mfMaxRec	Maximum record length
0x10	2	mfnoPar	Not used

Field Summary

Fields

Modifier and Type	Field and Description
static int	QUALITY_MAYBE A constant stating that the given file could be a Wmf-File.
static int	QUALITY_NO A constant stating that the given file is not Wmf-File at all.
static int	QUALITY_YES A constant stating that the given file is a Wmf-File.

Constructor Summary

Constructors

Constructor and Description
MfHeader()

Method Summary

Modifier and Type	Method and Description
Rectangle	getBBox() Return the bounding box of this metafile.
int	getFileSize() Gets the file size of the WmfFile.
int	getHeaderSize() Gets the header size.
int	getMaxRecordSize() Gets the size of the largest Record.
int	getObjectsSize() Gets the number of records stored in this metafile.
int	getUnitsPerInch() Gets the defined resolution, if this is an Aldus-File, null otherwise.
static int	isMetafile(String inName, InputStream in) Is the given input a metafile? We have to guess by reading the header and/or by looking at the file name.
boolean	isValid() Returns true if it looks like a real metafile.
void	read(InputStream in) Read the header from the given input.

Methods inherited from class org.pentaho.reporting.libraries.pixie.wmf.Buffer

getByte, getInputStream, getInt, getLength, getShort, getString, read, setByte, setInt, setShort, setString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

QUALITY_NO

public static final int QUALITY_NO

A constant stating that the given file is not Wmf-File at all.

See Also:

Constant Field Values

QUALITY_MAYBE

public static final int QUALITY_MAYBE

A constant stating that the given file could be a Wmf-File.

See Also:

Constant Field Values

QUALITY_YES

public static final int QUALITY_YES

A constant stating that the given file is a Wmf-File.

See Also:

Constant Field Values

Constructor Detail

MfHeader

public MfHeader()

Method Detail

isMetafile

public static int isMetafile(String inName,
                             InputStream in)
                      throws IOException

Is the given input a metafile? We have to guess by reading the header and/or by looking at the file name.

Parameters:

inName - the file name of the stream source

in - the input stream.

Returns:

either QUALITY_NO, QUALITY_MAYBE or QUALITY_YES.

Throws:

IOException - if an error occured.

read

public void read(InputStream in)
          throws IOException

Read the header from the given input.

Parameters:

in - the input stream

Throws:

IOException - if an error occured.

isValid

public boolean isValid()

Returns true if it looks like a real metafile. This implementation does not support Memory-WmfFiles.

Returns:

true, if this file is valid, false otherwise.

getBBox

public Rectangle getBBox()

Return the bounding box of this metafile. This returns an empty (0,0,0,0) rectangle if this file is not placeable.

Returns:

the bounding box of the metafile.

getUnitsPerInch

public int getUnitsPerInch()

Gets the defined resolution, if this is an Aldus-File, null otherwise.

Returns:

the image resolution or 0 if not defined.

getFileSize

public int getFileSize()

Gets the file size of the WmfFile.

Returns:

the filesize in bytes.

getObjectsSize

public int getObjectsSize()

Gets the number of records stored in this metafile.

Returns:

the number of records.

getMaxRecordSize

public int getMaxRecordSize()

Gets the size of the largest Record.

Returns:

the maximum record size.

getHeaderSize

public int getHeaderSize()

Gets the header size.

Returns:

the header size.