org.extex.language.ligature
Interface LigatureBuilder

All Superinterfaces:

java.io.Serializable

All Known Subinterfaces:

Language, ManagedLanguage, ModifiableLanguage

All Known Implementing Classes:

BaseHyphenationTable, CompressedLiangsHyphenationTable, EmptyLigatureBuilder, FutureLanguage, LiangsHyphenationTable, LigatureBuilderImpl

public interface LigatureBuilder
extends java.io.Serializable

This interface describes the capability of a ligature builder. The ligature builder inserts kerning nodes and constructs ligature nodes. It might use the information from the font.

Version:

$Revision: 4737 $

Author:

Gerd Neugebauer

Method Summary

UnicodeChar	getLigature(UnicodeChar c1, UnicodeChar c2, Font f) Get a single ligature of to characters.
int	insertLigatures(NodeList list, int start) Take a node list and transform character sequences into ligatures where appropriate.

Method Detail

insertLigatures

int insertLigatures(NodeList list,
                    int start)
                    throws HyphenationException

Take a node list and transform character sequences into ligatures where appropriate. The processing should extend over all characters with the same font and non-character nodes. It should return the control to the caller as soon as a character node with another font is found.

Parameters:

list - the node list to create ligatures for

start - the index in the list to start processing

Returns:

the index after last node processed

Throws:

HyphenationException - in case of an error

getLigature

UnicodeChar getLigature(UnicodeChar c1,
                        UnicodeChar c2,
                        Font f)
                        throws HyphenationException

Get a single ligature of to characters.

Parameters:

c1 - the first character

c2 - the second character

f - the current font

Returns:

the ligature of c1 and c2 or null if none exists

Throws:

HyphenationException - in case of an error