APIdia Launch Partner

Top Description Inners Fields Constructors Methods

com.badlogic.gdx.tools.hiero

public Class Kerning

Class Inheritance

extends Object

java.lang.Object
com.badlogic.gdx.tools.hiero.Kerning

Imports

com.badlogic.gdx.utils.IntArray, .IntIntMap, java.io.ByteArrayInputStream, .ByteArrayOutputStream, .EOFException, .IOException, .InputStream

Reads a TTF font file and provides access to kerning information. Thanks to the Apache FOP project for their inspiring work!

Author: Nathan Sweet

Nested and Inner Type Summary

Modifier and Type	Class and Description
private static class	Kerning.TTFInputStream

Field Summary

Modifier and Type	Field and Description
private int	gposOffset
private int	headOffset
private Kerning.TTFInputStream	input
private IntIntMap	kernings
private int	kernOffset
private float	scale

Constructor Summary

Access	Constructor and Description
public	Kerning()

Method Summary

Modifier and Type	Method and Description
public IntIntMap	getKernings() Returns: A map from pairs of glyph codes to their kerning in pixels.
public void	load(InputStream The data for the TTF font. inputStream, int The font size to use to determine kerning pixel offsets. fontSize)
private IntArray[]	readClassDefinition(int position, int classCount)
private void	readClassDefinitionFormat1(IntArray[] glyphsByClass)
private void	readClassDefinitionFormat2(IntArray[] glyphsByClass)
private int[]	readCoverageTable()
private void	readExtensionPositioningFormat1(int subTablePosition)
private void	readExtensionPositioningSubtable(int subTablePosition)
private void	readGPOS()
private void	readHEAD(int fontSize)
private void	readKERN()
private void	readPairAdjustmentSubtable(int subTablePosition)
private void	readPairPositioningAdjustmentFormat1(long subTablePosition)
private void	readPairPositioningAdjustmentFormat2(int subTablePosition)
private void	readSubtable(int type, int subTablePosition)
private void	readSubtables(int type, int lookupPosition)
private void	readTableDirectory()
private int	readXAdvanceFromValueRecord(int valueFormat)
private void	storeKerningOffset(int firstGlyphCode, int secondGlyphCode, int offset)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

gposOffset	back to summary
private int gposOffset

headOffset	back to summary
private int headOffset

input	back to summary
private Kerning.TTFInputStream input

kernings	back to summary
private IntIntMap kernings

kernOffset	back to summary
private int kernOffset

scale	back to summary
private float scale

Constructor Detail

Kerning	back to summary
public Kerning()

Method Detail

getKernings	back to summary
public IntIntMap getKernings() Returns:IntIntMap A map from pairs of glyph codes to their kerning in pixels. Each map key encodes two glyph codes: the high 16 bits form the first glyph code, and the low 16 bits form the second.

load	back to summary
public void load(InputStream inputStream, int fontSize) throws IOException Parameters inputStream:InputStream The data for the TTF font. fontSize:int The font size to use to determine kerning pixel offsets. Exceptions IOException: If the font could not be read.

readClassDefinition	back to summary
private IntArray[] readClassDefinition(int position, int classCount) throws IOException

readClassDefinitionFormat1	back to summary
private void readClassDefinitionFormat1(IntArray[] glyphsByClass) throws IOException

readClassDefinitionFormat2	back to summary
private void readClassDefinitionFormat2(IntArray[] glyphsByClass) throws IOException

readCoverageTable	back to summary
private int[] readCoverageTable() throws IOException

readExtensionPositioningFormat1	back to summary
private void readExtensionPositioningFormat1(int subTablePosition) throws IOException

readExtensionPositioningSubtable	back to summary
private void readExtensionPositioningSubtable(int subTablePosition) throws IOException

readGPOS	back to summary
private void readGPOS() throws IOException

readHEAD	back to summary
private void readHEAD(int fontSize) throws IOException

readKERN	back to summary
private void readKERN() throws IOException

readPairAdjustmentSubtable	back to summary
private void readPairAdjustmentSubtable(int subTablePosition) throws IOException

readPairPositioningAdjustmentFormat1	back to summary
private void readPairPositioningAdjustmentFormat1(long subTablePosition) throws IOException

readPairPositioningAdjustmentFormat2	back to summary
private void readPairPositioningAdjustmentFormat2(int subTablePosition) throws IOException

readSubtable	back to summary
private void readSubtable(int type, int subTablePosition) throws IOException

readSubtables	back to summary
private void readSubtables(int type, int lookupPosition) throws IOException

readTableDirectory	back to summary
private void readTableDirectory() throws IOException

readXAdvanceFromValueRecord	back to summary
private int readXAdvanceFromValueRecord(int valueFormat) throws IOException

storeKerningOffset	back to summary
private void storeKerningOffset(int firstGlyphCode, int secondGlyphCode, int offset)

com.badlogic.gdx.tools.hiero back to summary

private Class Kerning.TTFInputStream

Class Inheritance

extends ByteArrayInputStream

java.lang.Object
java.io.InputStream
java.io.ByteArrayInputStream
com.badlogic.gdx.tools.hiero.Kerning.TTFInputStream

Field Summary

Inherited from java.io.ByteArrayInputStream:: buf count mark pos

Constructor Summary

Access	Constructor and Description
public	TTFInputStream(InputStream input)

Method Summary

Modifier and Type	Method and Description
public int	getPosition()
private static byte[]	readAllBytes(InputStream input)
public byte	readByte()
public short	readShort()
public int	readUnsignedByte()
public long	readUnsignedLong()
public int	readUnsignedShort()
public int[]	readUnsignedShortArray(int count)
public void	seek(int position)

Inherited from java.io.ByteArrayInputStream:: available close mark markSupported read read readAllBytes readNBytes reset skip transferTo

Constructor Detail

TTFInputStream	back to summary
public TTFInputStream(InputStream input) throws IOException

Method Detail

getPosition	back to summary
public int getPosition()

readAllBytes	back to summary
private static byte[] readAllBytes(InputStream input) throws IOException

readByte	back to summary
public byte readByte() throws IOException

readShort	back to summary
public short readShort() throws IOException

readUnsignedByte	back to summary
public int readUnsignedByte() throws IOException

readUnsignedLong	back to summary
public long readUnsignedLong() throws IOException

readUnsignedShort	back to summary
public int readUnsignedShort() throws IOException

readUnsignedShortArray	back to summary
public int[] readUnsignedShortArray(int count) throws IOException

seek	back to summary
public void seek(int position)