Package com.itextpdf.io.font.otf

Class ChainingContextualTableContextualRule>

java.lang.Object

com.itextpdf.io.font.otf.ContextualTable

com.itextpdf.io.font.otf.ChainingContextualTable

Type Parameters:

T - the contextual rule type stored by this table

Direct Known Subclasses:

PosTableLookup8Format1, PosTableLookup8Format2, PosTableLookup8Format3, SubTableLookup6Format1, SubTableLookup6Format2, SubTableLookup6Format3

       public abstract class ChainingContextualTableContextualRule> extends ContextualTable
      

Represents the chaining contextual table component of an OpenType font.

Field Summary

Fields inherited from class com.itextpdf.io.font.otf.ContextualTable

lookupFlag, openReader

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ChainingContextualTable(OpenTypeFontTableReader openReader, int lookupFlag)	Creates a new chaining contextual table.

Method Summary

Modifier and Type	Method	Description
protected boolean	checkIfBacktrackContextMatch(GlyphLine line, T rule)	Checks if given glyph line at the given position matches given rule.
protected boolean	checkIfLookaheadContextMatch(GlyphLine line, T rule, int startIdx)	Checks if given glyph line at the given position matches given rule.
T	getMatchingContextRule(GlyphLine line)	Returns the matching context rule.

Methods inherited from class com.itextpdf.io.font.otf.ContextualTable

checkIfContextMatch, getSetOfRulesForStartGlyph

Methods inherited from class java.lang.Object

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

Constructor Details

ChainingContextualTable

             protected ChainingContextualTable
             (OpenTypeFontTableReader openReader, int lookupFlag)
            

Creates a new chaining contextual table.

Parameters:

openReader - the OpenType font reader

lookupFlag - specifies processing options, e.g. whether to skip base glyphs, marks or ligatures during glyph substitution or positioning. See Lookup table

Method Details

getMatchingContextRule

             public T getMatchingContextRule
             (GlyphLine line)
            

Returns the matching context rule.

Overrides:

getMatchingContextRule in class ContextualTable<T extends ContextualRule>

Parameters:

line - the glyph line

Returns:

the matching context rule

checkIfLookaheadContextMatch

             protected boolean checkIfLookaheadContextMatch
             (GlyphLine line, T rule, int startIdx)
            

Checks if given glyph line at the given position matches given rule.

Parameters:

line - glyph line to be checked

rule - rule to be compared with a given line

startIdx - glyph line position

Returns:

true if given glyph line at the given position matches given rule

checkIfBacktrackContextMatch

             protected boolean checkIfBacktrackContextMatch
             (GlyphLine line, T rule)
            

Checks if given glyph line at the given position matches given rule.

Parameters:

line - glyph line to be checked

rule - rule to be compared with a given line

Returns:

true if given glyph line matches given rule