org.apache.fop.complexscripts.fonts

Class GlyphSubstitutionTable

java.lang.Object

org.apache.fop.complexscripts.fonts.GlyphTable

org.apache.fop.complexscripts.fonts.GlyphSubstitutionTable

public class GlyphSubstitutionTable
extends GlyphTable

The GlyphSubstitutionTable class is a glyph table that implements GlyphSubstitution functionality.

This work was originally authored by Glenn Adams (gadams@apache.org).

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	GlyphSubstitutionTable.Ligature The Ligature class implements a ligature lookup result in terms of a ligature glyph (code) and the N+1...
static class	GlyphSubstitutionTable.LigatureSet The LigatureSet class implements a set of ligatures.

Nested classes/interfaces inherited from class org.apache.fop.complexscripts.fonts.GlyphTable

GlyphTable.ChainedClassSequenceRule, GlyphTable.ChainedCoverageSequenceRule, GlyphTable.ChainedGlyphSequenceRule, GlyphTable.ClassSequenceRule, GlyphTable.CoverageSequenceRule, GlyphTable.GlyphSequenceRule, GlyphTable.HomogeneousRuleSet, GlyphTable.LookupSpec, GlyphTable.LookupTable, GlyphTable.Rule, GlyphTable.RuleLookup, GlyphTable.RuleSet, GlyphTable.UseSpec

Field Summary

Fields

Modifier and Type	Field and Description
static int	GSUB_LOOKUP_TYPE_ALTERNATE alternate substitution subtable type
static int	GSUB_LOOKUP_TYPE_CHAINED_CONTEXTUAL chained contextual substitution subtable type
static int	GSUB_LOOKUP_TYPE_CONTEXTUAL contextual substitution subtable type
static int	GSUB_LOOKUP_TYPE_EXTENSION_SUBSTITUTION extension substitution substitution subtable type
static int	GSUB_LOOKUP_TYPE_LIGATURE ligature substitution subtable type
static int	GSUB_LOOKUP_TYPE_MULTIPLE multiple substitution subtable type
static int	GSUB_LOOKUP_TYPE_REVERSE_CHAINED_SINGLE reverse chained contextual single substitution subtable type
static int	GSUB_LOOKUP_TYPE_SINGLE single substitution subtable type

Fields inherited from class org.apache.fop.complexscripts.fonts.GlyphTable

GLYPH_TABLE_TYPE_BASELINE, GLYPH_TABLE_TYPE_DEFINITION, GLYPH_TABLE_TYPE_JUSTIFICATION, GLYPH_TABLE_TYPE_POSITIONING, GLYPH_TABLE_TYPE_SUBSTITUTION, processors

Constructor Summary

Constructors

Constructor and Description
GlyphSubstitutionTable(GlyphDefinitionTable gdef, Map lookups, List subtables, Map<String,ScriptProcessor> processors) Instantiate a GlyphSubstitutionTable object using the specified lookups and subtables.

Method Summary

Methods

Modifier and Type	Method and Description
static GlyphSubtable	createSubtable(int type, String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries) Create a substitution subtable according to the specified arguments.
static GlyphSubtable	createSubtable(int type, String id, int sequence, int flags, int format, List coverage, List entries) Create a substitution subtable according to the specified arguments.
static int	getLookupTypeFromName(String name) Map a lookup type name to its constant (integer) value.
static String	getLookupTypeName(int type) Map a lookup type constant (integer) value to its name.
CharSequence	preProcess(CharSequence charSequence, String script, MultiByteFont font, List associations)
GlyphSequence	substitute(GlyphSequence gs, String script, String language) Perform substitution processing using all matching lookups.

Methods inherited from class org.apache.fop.complexscripts.fonts.GlyphTable

addSubtable, assembleLookups, findLookupTables, freezeSubtables, getGlyphDefinitions, getLookups, getLookupTable, getLookupTables, getTableTypeFromName, hasFeature, matchLookups, matchLookupSpecs, resolveLookupReferences, toString

Methods inherited from class java.lang.Object

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

Field Detail

GSUB_LOOKUP_TYPE_SINGLE

public static final int GSUB_LOOKUP_TYPE_SINGLE

single substitution subtable type

See Also:

Constant Field Values

GSUB_LOOKUP_TYPE_MULTIPLE

public static final int GSUB_LOOKUP_TYPE_MULTIPLE

multiple substitution subtable type

See Also:

Constant Field Values

GSUB_LOOKUP_TYPE_ALTERNATE

public static final int GSUB_LOOKUP_TYPE_ALTERNATE

alternate substitution subtable type

See Also:

Constant Field Values

GSUB_LOOKUP_TYPE_LIGATURE

public static final int GSUB_LOOKUP_TYPE_LIGATURE

ligature substitution subtable type

See Also:

Constant Field Values

GSUB_LOOKUP_TYPE_CONTEXTUAL

public static final int GSUB_LOOKUP_TYPE_CONTEXTUAL

contextual substitution subtable type

See Also:

Constant Field Values

GSUB_LOOKUP_TYPE_CHAINED_CONTEXTUAL

public static final int GSUB_LOOKUP_TYPE_CHAINED_CONTEXTUAL

chained contextual substitution subtable type

See Also:

Constant Field Values

GSUB_LOOKUP_TYPE_EXTENSION_SUBSTITUTION

public static final int GSUB_LOOKUP_TYPE_EXTENSION_SUBSTITUTION

extension substitution substitution subtable type

See Also:

Constant Field Values

GSUB_LOOKUP_TYPE_REVERSE_CHAINED_SINGLE

public static final int GSUB_LOOKUP_TYPE_REVERSE_CHAINED_SINGLE

reverse chained contextual single substitution subtable type

See Also:

Constant Field Values

Constructor Detail

GlyphSubstitutionTable

public GlyphSubstitutionTable(GlyphDefinitionTable gdef,
                      Map lookups,
                      List subtables,
                      Map<String,ScriptProcessor> processors)

Instantiate a GlyphSubstitutionTable object using the specified lookups and subtables.

Parameters:

gdef - glyph definition table that applies

lookups - a map of lookup specifications to subtable identifier strings

subtables - a list of identified subtables

Method Detail

substitute

public GlyphSequence substitute(GlyphSequence gs,
                       String script,
                       String language)

Perform substitution processing using all matching lookups.

Parameters:

gs - an input glyph sequence

script - a script identifier

language - a language identifier

Returns:

the substituted (output) glyph sequence

preProcess

public CharSequence preProcess(CharSequence charSequence,
                      String script,
                      MultiByteFont font,
                      List associations)

getLookupTypeFromName

public static int getLookupTypeFromName(String name)

Map a lookup type name to its constant (integer) value.

Parameters:

name - lookup type name

Returns:

lookup type

getLookupTypeName

public static String getLookupTypeName(int type)

Map a lookup type constant (integer) value to its name.

Parameters:

type - lookup type

Returns:

lookup type name

createSubtable

public static GlyphSubtable createSubtable(int type,
                           String id,
                           int sequence,
                           int flags,
                           int format,
                           GlyphCoverageTable coverage,
                           List entries)

Create a substitution subtable according to the specified arguments.

Parameters:

type - subtable type

id - subtable identifier

sequence - subtable sequence

flags - subtable flags

format - subtable format

coverage - subtable coverage table

entries - subtable entries

Returns:

a glyph subtable instance

createSubtable

public static GlyphSubtable createSubtable(int type,
                           String id,
                           int sequence,
                           int flags,
                           int format,
                           List coverage,
                           List entries)

Create a substitution subtable according to the specified arguments.

Parameters:

type - subtable type

id - subtable identifier

sequence - subtable sequence

flags - subtable flags

format - subtable format

coverage - list of coverage table entries

entries - subtable entries

Returns:

a glyph subtable instance