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

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

All Implemented Interfaces:

XMLWriterConvertible

public class XtfFeatureList
extends java.lang.Object
implements XMLWriterConvertible

List of Feature.

future list table

The headers of the GSUB and GPOS tables contain offsets to Feature List tables (FeatureList) that enumerate all the features in a font. Features in a particular FeatureList are not limited to any single script. A FeatureList contains the entire list of either the GSUB or GPOS features that are used to render the glyphs in all the scripts in the font.
The FeatureList table enumerates features in an array of records (FeatureRecord) and specifies the total number of features (FeatureCount). Every feature must have a FeatureRecord, which consists of a FeatureTag that identifies the feature and an offset to a Feature table (described next). The FeatureRecord array is arranged alphabetically by FeatureTag names.
Note: The values stored in the FeatureIndex array of a LangSys table are used to locate records in the FeatureRecord array of a FeatureList table.

FeatureList table

Type	Name	Description
uint16	FeatureCount	Number of FeatureRecords in this table
struct	FeatureRecord[FeatureCount]	Array of FeatureRecords-zero-based (first feature has FeatureIndex = 0)-listed alphabetically by FeatureTag

FeatureRecord

Type	Name	Description
Tag	FeatureTag	4-byte feature identification tag
Offset	Feature	Offset to Feature table-from beginning of FeatureList

Version:

$Revision: 6604 $

Author:

Michael Niedermair

Nested Class Summary

class	XtfFeatureList.Feature The feature name table allows you to include the font's text features, the settings for each text feature, and the name table indices for common (human-readable) names for the features and settings.
class	XtfFeatureList.Record record

Constructor Summary

XtfFeatureList(RandomAccessR rar, int offset, AbstractXtfSFLTable gsub)
Create a new object

Method Summary

XtfFeatureList.Feature	findFeature(FeatureTag tag) Find a feature.
int	getFeatureCount() Returns the featureCount.
XtfFeatureList.Record[]	getFeatureRecords() Returns the featureRecords.
XtfFeatureList.Feature[]	getFeatures() Returns the features.
java.lang.String	getFeatureTag(int idx) Returns the tag string for feature.
java.lang.String	toString() Returns the info for this class
void	writeXML(XMLStreamWriter writer) Write the data to a XMLStreamWriter.

Methods inherited from class java.lang.Object

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

Constructor Detail

XtfFeatureList

public XtfFeatureList(RandomAccessR rar,
                      int offset,
                      AbstractXtfSFLTable gsub)
               throws java.io.IOException

Create a new object

Parameters:

rar - input

offset - offset

gsub - The gsub table.

Throws:

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

Method Detail

findFeature

public XtfFeatureList.Feature findFeature(FeatureTag tag)

Find a feature.

Parameters:

tag - the tag

Returns:

Returns a feature or null, if not found.

getFeatureCount

public int getFeatureCount()

Returns the featureCount.

Returns:

Returns the featureCount.

getFeatureRecords

public XtfFeatureList.Record[] getFeatureRecords()

Returns the featureRecords.

Returns:

Returns the featureRecords.

getFeatures

public XtfFeatureList.Feature[] getFeatures()

Returns the features.

Returns:

Returns the features.

getFeatureTag

public java.lang.String getFeatureTag(int idx)

Returns the tag string for feature.

Parameters:

idx - The index.

Returns:

Returns the tag string for feature.

toString

public java.lang.String toString()

Returns the info for this class

Overrides:

toString in class java.lang.Object

Returns:

Returns the info for this class

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)