com.itextpdf.io.font.otf.lookuptype6

Class SubTableLookup6Format1.SubstRuleFormat1

java.lang.Object

com.itextpdf.io.font.otf.ContextualSubstRule

com.itextpdf.io.font.otf.lookuptype6.SubTableLookup6Format1.SubstRuleFormat1

All Implemented Interfaces:

Serializable

Enclosing class:

SubTableLookup6Format1

public static class SubTableLookup6Format1.SubstRuleFormat1
extends ContextualSubstRule

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
SubstRuleFormat1(int[] backtrackGlyphIds, int[] inputGlyphIds, int[] lookAheadGlyphIds, SubstLookupRecord[] substLookupRecords)

Method Summary

Modifier and Type	Method and Description
int	getBacktrackContextLength()
int	getContextLength()
int	getLookaheadContextLength()
SubstLookupRecord[]	getSubstLookupRecords()
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

SubstRuleFormat1

public SubstRuleFormat1(int[] backtrackGlyphIds,
                        int[] inputGlyphIds,
                        int[] lookAheadGlyphIds,
                        SubstLookupRecord[] substLookupRecords)

Method Detail

getContextLength

public int getContextLength()

Specified by:

getContextLength in class ContextualSubstRule

Returns:

length of the context glyph sequence defined by this rule.

getLookaheadContextLength

public int getLookaheadContextLength()

Overrides:

getLookaheadContextLength in class ContextualSubstRule

Returns:

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

getBacktrackContextLength

public int getBacktrackContextLength()

Overrides:

getBacktrackContextLength in class ContextualSubstRule

Returns:

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

getSubstLookupRecords

public SubstLookupRecord[] getSubstLookupRecords()

Specified by:

getSubstLookupRecords in class ContextualSubstRule

Returns:

an array of SubstLookupRecord. Each record specifies a position in the context glyph sequence and a LookupListIndex to the substitution lookup that is applied at that position.

isGlyphMatchesInput

public boolean isGlyphMatchesInput(int glyphId,
                                   int atIdx)

Description copied from class: ContextualSubstRule

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 ContextualSubstRule

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

isGlyphMatchesLookahead

public boolean isGlyphMatchesLookahead(int glyphId,
                                       int atIdx)

Description copied from class: ContextualSubstRule

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

Overrides:

isGlyphMatchesLookahead in class ContextualSubstRule

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

isGlyphMatchesBacktrack

public boolean isGlyphMatchesBacktrack(int glyphId,
                                       int atIdx)

Description copied from class: ContextualSubstRule

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

Overrides:

isGlyphMatchesBacktrack in class ContextualSubstRule

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