Package org.apache.fop.complexscripts.fonts

Class GlyphPositioningTable.PairSubtable

java.lang.Object

org.apache.fop.complexscripts.fonts.GlyphSubtable

org.apache.fop.complexscripts.fonts.GlyphPositioningSubtable

org.apache.fop.complexscripts.fonts.GlyphPositioningTable.PairSubtable

All Implemented Interfaces:

Comparable, GlyphPositioning

Direct Known Subclasses:

GlyphPositioningTable.PairSubtableFormat1, GlyphPositioningTable.PairSubtableFormat2

Enclosing class:

GlyphPositioningTable

private abstract static class GlyphPositioningTable.PairSubtable
extends GlyphPositioningSubtable

Field Summary

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

LF_IGNORE_BASE, LF_IGNORE_LIGATURE, LF_IGNORE_MARK, LF_INTERNAL_USE_REVERSE_SCAN, LF_MARK_ATTACHMENT_TYPE, LF_RESERVED, LF_RIGHT_TO_LEFT, LF_USE_MARK_FILTERING_SET

Constructor Summary

Constructors

Constructor	Description
PairSubtable(String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries)

Method Summary

Modifier and Type	Method	Description
(package private) static GlyphPositioningSubtable	create(String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries)
abstract GlyphPositioningTable.PairValues	getPairValues(int ci, int gi1, int gi2)	Obtain associated pair values.
int	getType()
boolean	isCompatible(GlyphSubtable subtable)	Determine if a glyph subtable is compatible with this glyph subtable.
boolean	position(GlyphPositioningState ps)	Perform glyph positioning at the current index, mutating the positioning state object as required.

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

getTableType, getTypeName, position, position, usesReverseScan

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

compareTo, equals, getClasses, getCoverage, getCoverageIndex, getCoverageSize, getEntries, getFlags, getFlags, getFormat, getGDEF, getLookupId, getSequence, getTable, hashCode, resolveLookupReferences, setTable, usesReverseScan

Methods inherited from class java.lang.Object

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

Constructor Details

PairSubtable

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

Method Details

getType

public int getType()

Specified by:

getType in class GlyphSubtable

Returns:

this subtable's type

isCompatible

public boolean isCompatible(GlyphSubtable subtable)

Determine if a glyph subtable is compatible with this glyph subtable. Two glyph subtables are compatible if the both may appear in a single lookup table.

Overrides:

isCompatible in class GlyphPositioningSubtable

Parameters:

subtable - a glyph subtable to determine compatibility

Returns:

true if specified subtable is compatible with this glyph subtable, where by compatible is meant that they share the same lookup type

position

public boolean position(GlyphPositioningState ps)

Perform glyph positioning at the current index, mutating the positioning state object as required. Only the context associated with the current index is processed.

Specified by:

position in interface GlyphPositioning

Overrides:

position in class GlyphPositioningSubtable

Parameters:

ps - glyph positioning state object

Returns:

true if the glyph subtable applies, meaning that the current context matches the associated input context glyph coverage table; note that returning true does not mean any position adjustment occurred; it only means that no further glyph subtables for the current lookup table should be applied.

getPairValues

public abstract GlyphPositioningTable.PairValues getPairValues(int ci,
 int gi1,
 int gi2)

Obtain associated pair values.

Parameters:

ci - coverage index

gi1 - first input glyph index

gi2 - second input glyph index

Returns:

pair values or null if none applies

create

static GlyphPositioningSubtable create(String id,
 int sequence,
 int flags,
 int format,
 GlyphCoverageTable coverage,
 List entries)