org.extex.font.format.xtf.tables.gps
Class DeviceTable

java.lang.Object
  org.extex.font.format.xtf.tables.gps.DeviceTable

All Implemented Interfaces:

XMLWriterConvertible

public class DeviceTable
extends java.lang.Object
implements XMLWriterConvertible

Class for a Device Tables.

The DeltaValue array lists the number of pixels to adjust specified points on the glyph, or the entire glyph, at each ppem size in the targeted range. In the array, the first index position specifies the number of pixels to add or subtract from the coordinate at the smallest ppem size that needs correction, the second index position specifies the number of pixels to add or subtract from the coordinate at the next ppem size, and so on for each ppem size in the range.

Type	Name	Description
uint16	StartSize	Smallest size to correct-in ppem
uint16	EndSize	Largest size to correct-in ppem
uint16	DeltaFormat	Format of DeltaValue array data: 1, 2, or 3
uint16	DeltaValue[ ]	Array of compressed data

DeltaFormat

The 2-, 4-, or 8-bit signed values are packed into uint16's most significant bits first. For example, using a DeltaFormat of 2 (4-bit values), an array of values equal to {1, 2, 3, -1} would be represented by the DeltaValue 0x123F.

Type	Name	Description
1	2	Signed 2-bit value, 8 values per uint16
2	4	Signed 4-bit value, 4 values per uint16
3	8	Signed 8-bit value, 2 values per uint16

Version:

$Revision: 6678 $

Author:

Michael Niedermair

Constructor Summary

DeviceTable(RandomAccessR rar, int offset)
Creates a new object.

Method Summary

void	writeXML(XMLStreamWriter writer) Write the data to a XMLStreamWriter.

Methods inherited from class java.lang.Object

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

Constructor Detail

DeviceTable

public DeviceTable(RandomAccessR rar,
                   int offset)
            throws java.io.IOException

Creates a new object.

Parameters:

rar - The input.

offset - The offset.

Throws:

java.io.IOException - if a IO-error occurred.

Method Detail

writeXML

public void writeXML(XMLStreamWriter writer)
              throws java.io.IOException

Write the data to a XMLStreamWriter.

Specified by:

writeXML in interface XMLWriterConvertible

Parameters:

writer - the XML-Writer

Throws:

java.io.IOException - if an IO-error occurs.

See Also:

XMLWriterConvertible.writeXML(org.extex.util.xml.XMLStreamWriter)