java.lang.Object

org.apache.fop.complexscripts.fonts.GlyphTable

org.apache.fop.complexscripts.fonts.GlyphPositioningTable

public class GlyphPositioningTable extends GlyphTable

The GlyphPositioningTable class is a glyph table that implements GlyphPositioning functionality.

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

Nested Class Summary

Nested Classes

Modifier and Type

Class

Description

static class

GlyphPositioningTable.Anchor

The Anchor class implements a anchor record, comprising an X,Y coordinate pair, an optional anchor point index (or -1), and optional X or Y device tables (or null if absent).

static class

GlyphPositioningTable.DeviceTable

The DeviceTable class implements a positioning device table record, comprising adjustments to be made to scaled design units according to the scaled size.

static class

GlyphPositioningTable.MarkAnchor

The MarkAnchor class is a subclass of the Anchor class, adding a mark class designation.

static class

GlyphPositioningTable.PairValues

The PairValues class implements a pair value record, comprising a glyph id (or zero) and two optional positioning values.

static class

GlyphPositioningTable.Value

The Value class implements a positioning value record, comprising placement and advancement information in X and Y axes, and optionally including device data used to perform device (grid-fitted) specific fine grain adjustments.

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

Description

static final int

GPOS_LOOKUP_TYPE_CHAINED_CONTEXTUAL

chained contextual positioning subtable type

static final int

GPOS_LOOKUP_TYPE_CONTEXTUAL

contextual positioning subtable type

static final int

GPOS_LOOKUP_TYPE_CURSIVE

cursive positioning subtable type

static final int

GPOS_LOOKUP_TYPE_EXTENSION_POSITIONING

extension positioning subtable type

static final int

GPOS_LOOKUP_TYPE_MARK_TO_BASE

mark to base positioning subtable type

static final int

GPOS_LOOKUP_TYPE_MARK_TO_LIGATURE

mark to ligature positioning subtable type

static final int

GPOS_LOOKUP_TYPE_MARK_TO_MARK

mark to mark positioning subtable type

static final int

GPOS_LOOKUP_TYPE_PAIR

multiple positioning subtable type

static final int

GPOS_LOOKUP_TYPE_SINGLE

single positioning 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

Description

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

Instantiate a GlyphPositioningTable object using the specified lookups and subtables.
Method Summary

Modifier and Type

Method

Description

static GlyphSubtable

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

Create a positioning subtable according to the specified arguments.

static GlyphSubtable

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

Create a positioning 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.

boolean

position(GlyphSequence gs, String script, String language, int fontSize, int[] widths, int[][] adjustments)

Perform positioning 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 Details
- GPOS_LOOKUP_TYPE_SINGLE
  
  public static final int GPOS_LOOKUP_TYPE_SINGLE
  
  single positioning subtable type
  See Also:
  
  Constant Field Values
- GPOS_LOOKUP_TYPE_PAIR
  
  public static final int GPOS_LOOKUP_TYPE_PAIR
  
  multiple positioning subtable type
  See Also:
  
  Constant Field Values
- GPOS_LOOKUP_TYPE_CURSIVE
  
  public static final int GPOS_LOOKUP_TYPE_CURSIVE
  
  cursive positioning subtable type
  See Also:
  
  Constant Field Values
- GPOS_LOOKUP_TYPE_MARK_TO_BASE
  
  public static final int GPOS_LOOKUP_TYPE_MARK_TO_BASE
  
  mark to base positioning subtable type
  See Also:
  
  Constant Field Values
- GPOS_LOOKUP_TYPE_MARK_TO_LIGATURE
  
  public static final int GPOS_LOOKUP_TYPE_MARK_TO_LIGATURE
  
  mark to ligature positioning subtable type
  See Also:
  
  Constant Field Values
- GPOS_LOOKUP_TYPE_MARK_TO_MARK
  
  public static final int GPOS_LOOKUP_TYPE_MARK_TO_MARK
  
  mark to mark positioning subtable type
  See Also:
  
  Constant Field Values
- GPOS_LOOKUP_TYPE_CONTEXTUAL
  
  public static final int GPOS_LOOKUP_TYPE_CONTEXTUAL
  
  contextual positioning subtable type
  See Also:
  
  Constant Field Values
- GPOS_LOOKUP_TYPE_CHAINED_CONTEXTUAL
  
  public static final int GPOS_LOOKUP_TYPE_CHAINED_CONTEXTUAL
  
  chained contextual positioning subtable type
  See Also:
  
  Constant Field Values
- GPOS_LOOKUP_TYPE_EXTENSION_POSITIONING
  
  public static final int GPOS_LOOKUP_TYPE_EXTENSION_POSITIONING
  
  extension positioning subtable type
  See Also:
  
  Constant Field Values
Constructor Details
- GlyphPositioningTable
  
  public GlyphPositioningTable(GlyphDefinitionTable gdef, Map lookups, List subtables, Map<String,ScriptProcessor> processors)
  
  Instantiate a GlyphPositioningTable 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 Details
- 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 positioning 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 positioning 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
- position
  
  public boolean position(GlyphSequence gs, String script, String language, int fontSize, int[] widths, int[][] adjustments)
  
  Perform positioning processing using all matching lookups.
  
  Parameters:
  
  gs - an input glyph sequence
  
  script - a script identifier
  
  language - a language identifier
  
  fontSize - size in device units
  
  widths - array of default advancements for each glyph
  
  adjustments - accumulated adjustments array (sequence) of 4-tuples of placement [PX,PY] and advance [AX,AY] adjustments, in that order, with one 4-tuple for each element of glyph sequence
  
  Returns:
  
  true if some adjustment is not zero; otherwise, false

Class GlyphPositioningTable

Nested Class Summary

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

Field Summary

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

Constructor Summary

Method Summary

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

Methods inherited from class java.lang.Object

Field Details

GPOS_LOOKUP_TYPE_SINGLE

GPOS_LOOKUP_TYPE_PAIR

GPOS_LOOKUP_TYPE_CURSIVE

GPOS_LOOKUP_TYPE_MARK_TO_BASE

GPOS_LOOKUP_TYPE_MARK_TO_LIGATURE

GPOS_LOOKUP_TYPE_MARK_TO_MARK

GPOS_LOOKUP_TYPE_CONTEXTUAL

GPOS_LOOKUP_TYPE_CHAINED_CONTEXTUAL

GPOS_LOOKUP_TYPE_EXTENSION_POSITIONING

Constructor Details

GlyphPositioningTable

Method Details

getLookupTypeFromName

getLookupTypeName

createSubtable

createSubtable

position