com.itextpdf.io.font.otf.lookuptype6

Class SubTableLookup6Format3.SubstRuleFormat3

java.lang.Object

com.itextpdf.io.font.otf.ContextualRule

com.itextpdf.io.font.otf.ContextualSubstRule

com.itextpdf.io.font.otf.lookuptype6.SubTableLookup6Format3.SubstRuleFormat3

Enclosing class:

SubTableLookup6Format3

public static class SubTableLookup6Format3.SubstRuleFormat3
extends ContextualSubstRule

Constructor Summary

Constructors

Constructor and Description
SubstRuleFormat3(List<Set<Integer>> backtrackCoverages, List<Set<Integer>> inputCoverages, List<Set<Integer>> lookaheadCoverages, SubstLookupRecord[] substLookupRecords)

Method Summary

Modifier and Type	Method and Description
int	getBacktrackContextLength() Gets the length of the backtrack context glyph sequence defined by this rule
int	getContextLength() Gets the length of the context glyph sequence defined by this rule
int	getLookaheadContextLength() Gets the length of the lookahead context glyph sequence defined by this rule
SubstLookupRecord[]	getSubstLookupRecords() Retrieves the substitution lookup records.
boolean	isGlyphMatchesBacktrack(int glyphId, int atIdx) Checks if glyph line element matches element from backtrack sequence of the rule.
boolean	isGlyphMatchesInput(int glyphId, int atIdx) Checks if glyph line element matches element from input sequence of the rule.
boolean	isGlyphMatchesLookahead(int glyphId, int atIdx) Checks if glyph line element matches element from lookahead sequence of the rule.

Methods inherited from class java.lang.Object

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

Constructor Detail

SubstRuleFormat3

public SubstRuleFormat3(List<Set<Integer>> backtrackCoverages,
                        List<Set<Integer>> inputCoverages,
                        List<Set<Integer>> lookaheadCoverages,
                        SubstLookupRecord[] substLookupRecords)

Method Detail

getContextLength

public int getContextLength()

Description copied from class: ContextualRule

Gets the length of the context glyph sequence defined by this rule

Specified by:

getContextLength in class ContextualRule

Returns:

length of the context

getLookaheadContextLength

public int getLookaheadContextLength()

Description copied from class: ContextualRule

Gets the length of the lookahead context glyph sequence defined by this rule

Overrides:

getLookaheadContextLength in class ContextualRule

Returns:

length of the lookahead context

getBacktrackContextLength

public int getBacktrackContextLength()

Description copied from class: ContextualRule

Gets the length of the backtrack context glyph sequence defined by this rule

Overrides:

getBacktrackContextLength in class ContextualRule

Returns:

length of the backtrack context

getSubstLookupRecords

public SubstLookupRecord[] getSubstLookupRecords()

Description copied from class: ContextualSubstRule

Retrieves the substitution lookup records. Each record specifies a position in the context glyph sequence and a LookupListIndex to the substitution lookup that is applied at that position.

Specified by:

getSubstLookupRecords in class ContextualSubstRule

Returns:

an array of SubstLookupRecord.

isGlyphMatchesInput

public boolean isGlyphMatchesInput(int glyphId,
                                   int atIdx)

Description copied from class: ContextualRule

Checks if glyph line element matches element from input sequence of the rule.

NOTE: rules do not contain the first element of the input sequence, the first element is defined by rule position in substitution table. Therefore atIdx shall not be 0.

Specified by:

isGlyphMatchesInput in class ContextualRule

Parameters:

glyphId - glyph code id

atIdx - index in the rule sequence. Shall be: 0 < atIdx < ContextualRule.getContextLength()

Returns:

true if glyph matches element

isGlyphMatchesLookahead

public boolean isGlyphMatchesLookahead(int glyphId,
                                       int atIdx)

Description copied from class: ContextualRule

Checks if glyph line element matches element from lookahead sequence of the rule.

Overrides:

isGlyphMatchesLookahead in class ContextualRule

Parameters:

glyphId - glyph code id

atIdx - index in rule sequence. Shall be: 0 <= atIdx < ContextualRule.getLookaheadContextLength()

Returns:

true if glyph matches element from lookahead sequence

isGlyphMatchesBacktrack

public boolean isGlyphMatchesBacktrack(int glyphId,
                                       int atIdx)

Description copied from class: ContextualRule

Checks if glyph line element matches element from backtrack sequence of the rule.

Overrides:

isGlyphMatchesBacktrack in class ContextualRule

Parameters:

glyphId - glyph code id

atIdx - index in rule sequence. Shall be: 0 <= atIdx < ContextualRule.getBacktrackContextLength()

Returns:

true if glyph matches element from backtrack sequence