/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* $Id$ */
package org.apache.fop.complexscripts.fonts;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.fop.complexscripts.scripts.ScriptProcessor;
import org.apache.fop.complexscripts.util.GlyphSequence;
import org.apache.fop.complexscripts.util.GlyphTester;
// CSOFF: LineLengthCheck
// CSOFF: InnerAssignmentCheck
// CSOFF: NoWhitespaceAfterCheck
// CSOFF: ParameterNumberCheck
/**
* <p>The <code>GlyphPositioningTable</code> class is a glyph table that implements
* <code>GlyphPositioning</code> functionality.</p>
*
* <p>This work was originally authored by Glenn Adams (gadams@apache.org).</p>
*/
public class GlyphPositioningTable extends GlyphTable {
/** logging instance */
private static final Log log = LogFactory.getLog(GlyphPositioningTable.class); // CSOK: ConstantNameCheck
/** single positioning subtable type */
public static final int GPOS_LOOKUP_TYPE_SINGLE = 1;
/** multiple positioning subtable type */
public static final int GPOS_LOOKUP_TYPE_PAIR = 2;
/** cursive positioning subtable type */
public static final int GPOS_LOOKUP_TYPE_CURSIVE = 3;
/** mark to base positioning subtable type */
public static final int GPOS_LOOKUP_TYPE_MARK_TO_BASE = 4;
/** mark to ligature positioning subtable type */
public static final int GPOS_LOOKUP_TYPE_MARK_TO_LIGATURE = 5;
/** mark to mark positioning subtable type */
public static final int GPOS_LOOKUP_TYPE_MARK_TO_MARK = 6;
/** contextual positioning subtable type */
public static final int GPOS_LOOKUP_TYPE_CONTEXTUAL = 7;
/** chained contextual positioning subtable type */
public static final int GPOS_LOOKUP_TYPE_CHAINED_CONTEXTUAL = 8;
/** extension positioning subtable type */
public static final int GPOS_LOOKUP_TYPE_EXTENSION_POSITIONING = 9;
/**
* Instantiate a <code>GlyphPositioningTable</code> object using the specified lookups
* and subtables.
* @param gdef glyph definition table that applies
* @param lookups a map of lookup specifications to subtable identifier strings
* @param subtables a list of identified subtables
*/
public GlyphPositioningTable ( GlyphDefinitionTable gdef, Map lookups, List subtables ) {
super ( gdef, lookups );
if ( ( subtables == null ) || ( subtables.size() == 0 ) ) {
throw new AdvancedTypographicTableFormatException ( "subtables must be non-empty" );
} else {
for ( Iterator it = subtables.iterator(); it.hasNext();) {
Object o = it.next();
if ( o instanceof GlyphPositioningSubtable ) {
addSubtable ( (GlyphSubtable) o );
} else {
throw new AdvancedTypographicTableFormatException ( "subtable must be a glyph positioning subtable" );
}
}
freezeSubtables();
}
}
/**
* Map a lookup type name to its constant (integer) value.
* @param name lookup type name
* @return lookup type
*/
public static int getLookupTypeFromName ( String name ) {
int t;
String s = name.toLowerCase();
if ( "single".equals ( s ) ) {
t = GPOS_LOOKUP_TYPE_SINGLE;
} else if ( "pair".equals ( s ) ) {
t = GPOS_LOOKUP_TYPE_PAIR;
} else if ( "cursive".equals ( s ) ) {
t = GPOS_LOOKUP_TYPE_CURSIVE;
} else if ( "marktobase".equals ( s ) ) {
t = GPOS_LOOKUP_TYPE_MARK_TO_BASE;
} else if ( "marktoligature".equals ( s ) ) {
t = GPOS_LOOKUP_TYPE_MARK_TO_LIGATURE;
} else if ( "marktomark".equals ( s ) ) {
t = GPOS_LOOKUP_TYPE_MARK_TO_MARK;
} else if ( "contextual".equals ( s ) ) {
t = GPOS_LOOKUP_TYPE_CONTEXTUAL;
} else if ( "chainedcontextual".equals ( s ) ) {
t = GPOS_LOOKUP_TYPE_CHAINED_CONTEXTUAL;
} else if ( "extensionpositioning".equals ( s ) ) {
t = GPOS_LOOKUP_TYPE_EXTENSION_POSITIONING;
} else {
t = -1;
}
return t;
}
/**
* Map a lookup type constant (integer) value to its name.
* @param type lookup type
* @return lookup type name
*/
public static String getLookupTypeName ( int type ) {
String tn;
switch ( type ) {
case GPOS_LOOKUP_TYPE_SINGLE:
tn = "single";
break;
case GPOS_LOOKUP_TYPE_PAIR:
tn = "pair";
break;
case GPOS_LOOKUP_TYPE_CURSIVE:
tn = "cursive";
break;
case GPOS_LOOKUP_TYPE_MARK_TO_BASE:
tn = "marktobase";
break;
case GPOS_LOOKUP_TYPE_MARK_TO_LIGATURE:
tn = "marktoligature";
break;
case GPOS_LOOKUP_TYPE_MARK_TO_MARK:
tn = "marktomark";
break;
case GPOS_LOOKUP_TYPE_CONTEXTUAL:
tn = "contextual";
break;
case GPOS_LOOKUP_TYPE_CHAINED_CONTEXTUAL:
tn = "chainedcontextual";
break;
case GPOS_LOOKUP_TYPE_EXTENSION_POSITIONING:
tn = "extensionpositioning";
break;
default:
tn = "unknown";
break;
}
return tn;
}
/**
* Create a positioning subtable according to the specified arguments.
* @param type subtable type
* @param id subtable identifier
* @param sequence subtable sequence
* @param flags subtable flags
* @param format subtable format
* @param coverage subtable coverage table
* @param entries subtable entries
* @return a glyph subtable instance
*/
public static GlyphSubtable createSubtable ( int type, String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
GlyphSubtable st = null;
switch ( type ) {
case GPOS_LOOKUP_TYPE_SINGLE:
st = SingleSubtable.create ( id, sequence, flags, format, coverage, entries );
break;
case GPOS_LOOKUP_TYPE_PAIR:
st = PairSubtable.create ( id, sequence, flags, format, coverage, entries );
break;
case GPOS_LOOKUP_TYPE_CURSIVE:
st = CursiveSubtable.create ( id, sequence, flags, format, coverage, entries );
break;
case GPOS_LOOKUP_TYPE_MARK_TO_BASE:
st = MarkToBaseSubtable.create ( id, sequence, flags, format, coverage, entries );
break;
case GPOS_LOOKUP_TYPE_MARK_TO_LIGATURE:
st = MarkToLigatureSubtable.create ( id, sequence, flags, format, coverage, entries );
break;
case GPOS_LOOKUP_TYPE_MARK_TO_MARK:
st = MarkToMarkSubtable.create ( id, sequence, flags, format, coverage, entries );
break;
case GPOS_LOOKUP_TYPE_CONTEXTUAL:
st = ContextualSubtable.create ( id, sequence, flags, format, coverage, entries );
break;
case GPOS_LOOKUP_TYPE_CHAINED_CONTEXTUAL:
st = ChainedContextualSubtable.create ( id, sequence, flags, format, coverage, entries );
break;
default:
break;
}
return st;
}
/**
* Create a positioning subtable according to the specified arguments.
* @param type subtable type
* @param id subtable identifier
* @param sequence subtable sequence
* @param flags subtable flags
* @param format subtable format
* @param coverage list of coverage table entries
* @param entries subtable entries
* @return a glyph subtable instance
*/
public static GlyphSubtable createSubtable ( int type, String id, int sequence, int flags, int format, List coverage, List entries ) {
return createSubtable ( type, id, sequence, flags, format, GlyphCoverageTable.createCoverageTable ( coverage ), entries );
}
/**
* Perform positioning processing using all matching lookups.
* @param gs an input glyph sequence
* @param script a script identifier
* @param language a language identifier
* @param fontSize size in device units
* @param widths array of default advancements for each glyph
* @param 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
* @return true if some adjustment is not zero; otherwise, false
*/
public boolean position ( GlyphSequence gs, String script, String language, int fontSize, int[] widths, int[][] adjustments ) {
Map/*<LookupSpec,List<LookupTable>>*/ lookups = matchLookups ( script, language, "*" );
if ( ( lookups != null ) && ( lookups.size() > 0 ) ) {
ScriptProcessor sp = ScriptProcessor.getInstance ( script );
return sp.position ( this, gs, script, language, fontSize, lookups, widths, adjustments );
} else {
return false;
}
}
private abstract static class SingleSubtable extends GlyphPositioningSubtable {
SingleSubtable ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
super ( id, sequence, flags, format, coverage );
}
/** {@inheritDoc} */
public int getType() {
return GPOS_LOOKUP_TYPE_SINGLE;
}
/** {@inheritDoc} */
public boolean isCompatible ( GlyphSubtable subtable ) {
return subtable instanceof SingleSubtable;
}
/** {@inheritDoc} */
public boolean position ( GlyphPositioningState ps ) {
int gi = ps.getGlyph();
int ci;
if ( ( ci = getCoverageIndex ( gi ) ) < 0 ) {
return false;
} else {
Value v = getValue ( ci, gi );
if ( v != null ) {
if ( ps.adjust(v) ) {
ps.setAdjusted ( true );
}
ps.consume(1);
}
return true;
}
}
/**
* Obtain positioning value for coverage index.
* @param ci coverage index
* @param gi input glyph index
* @return positioning value or null if none applies
*/
public abstract Value getValue ( int ci, int gi );
static GlyphPositioningSubtable create ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
if ( format == 1 ) {
return new SingleSubtableFormat1 ( id, sequence, flags, format, coverage, entries );
} else if ( format == 2 ) {
return new SingleSubtableFormat2 ( id, sequence, flags, format, coverage, entries );
} else {
throw new UnsupportedOperationException();
}
}
}
private static class SingleSubtableFormat1 extends SingleSubtable {
private Value value;
private int ciMax;
SingleSubtableFormat1 ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
super ( id, sequence, flags, format, coverage, entries );
populate ( entries );
}
/** {@inheritDoc} */
public List getEntries() {
if ( value != null ) {
List entries = new ArrayList ( 1 );
entries.add ( value );
return entries;
} else {
return null;
}
}
/** {@inheritDoc} */
public Value getValue ( int ci, int gi ) {
if ( ( value != null ) && ( ci <= ciMax ) ) {
return value;
} else {
return null;
}
}
private void populate ( List entries ) {
if ( ( entries == null ) || ( entries.size() != 1 ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, must be non-null and contain exactly one entry" );
} else {
Value v;
Object o = entries.get(0);
if ( o instanceof Value ) {
v = (Value) o;
} else {
throw new AdvancedTypographicTableFormatException ( "illegal entries entry, must be Value, but is: " + ( ( o != null ) ? o.getClass() : null ) );
}
assert this.value == null;
this.value = v;
this.ciMax = getCoverageSize() - 1;
}
}
}
private static class SingleSubtableFormat2 extends SingleSubtable {
private Value[] values;
SingleSubtableFormat2 ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
super ( id, sequence, flags, format, coverage, entries );
populate ( entries );
}
/** {@inheritDoc} */
public List getEntries() {
if ( values != null ) {
List entries = new ArrayList ( values.length );
for ( int i = 0, n = values.length; i < n; i++ ) {
entries.add ( values[i] );
}
return entries;
} else {
return null;
}
}
/** {@inheritDoc} */
public Value getValue ( int ci, int gi ) {
if ( ( values != null ) && ( ci < values.length ) ) {
return values [ ci ];
} else {
return null;
}
}
private void populate ( List entries ) {
if ( entries == null ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, must be non-null" );
} else if ( entries.size() != 1 ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, " + entries.size() + " entries present, but requires 1 entry" );
} else {
Object o;
if ( ( ( o = entries.get(0) ) == null ) || ! ( o instanceof Value[] ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, single entry must be a Value[], but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
Value[] va = (Value[]) o;
if ( va.length != getCoverageSize() ) {
throw new AdvancedTypographicTableFormatException ( "illegal values array, " + entries.size() + " values present, but requires " + getCoverageSize() + " values" );
} else {
assert this.values == null;
this.values = va;
}
}
}
}
}
private abstract static class PairSubtable extends GlyphPositioningSubtable {
PairSubtable ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
super ( id, sequence, flags, format, coverage );
}
/** {@inheritDoc} */
public int getType() {
return GPOS_LOOKUP_TYPE_PAIR;
}
/** {@inheritDoc} */
public boolean isCompatible ( GlyphSubtable subtable ) {
return subtable instanceof PairSubtable;
}
/** {@inheritDoc} */
public boolean position ( GlyphPositioningState ps ) {
boolean applied = false;
int gi = ps.getGlyph(0);
int ci;
if ( ( ci = getCoverageIndex ( gi ) ) >= 0 ) {
int[] counts = ps.getGlyphsAvailable ( 0 );
int nga = counts[0];
if ( nga > 1 ) {
int[] iga = ps.getGlyphs ( 0, 2, null, counts );
if ( ( iga != null ) && ( iga.length == 2 ) ) {
PairValues pv = getPairValues ( ci, iga[0], iga[1] );
if ( pv != null ) {
Value v1 = pv.getValue1();
if ( v1 != null ) {
if ( ps.adjust(v1, 0) ) {
ps.setAdjusted ( true );
}
}
Value v2 = pv.getValue2();
if ( v2 != null ) {
if ( ps.adjust(v2, 1) ) {
ps.setAdjusted ( true );
}
}
ps.consume ( counts[0] + counts[1] );
applied = true;
}
}
}
}
return applied;
}
/**
* Obtain associated pair values.
* @param ci coverage index
* @param gi1 first input glyph index
* @param gi2 second input glyph index
* @return pair values or null if none applies
*/
public abstract PairValues getPairValues ( int ci, int gi1, int gi2 );
static GlyphPositioningSubtable create ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
if ( format == 1 ) {
return new PairSubtableFormat1 ( id, sequence, flags, format, coverage, entries );
} else if ( format == 2 ) {
return new PairSubtableFormat2 ( id, sequence, flags, format, coverage, entries );
} else {
throw new UnsupportedOperationException();
}
}
}
private static class PairSubtableFormat1 extends PairSubtable {
private PairValues[][] pvm; // pair values matrix
PairSubtableFormat1 ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
super ( id, sequence, flags, format, coverage, entries );
populate ( entries );
}
/** {@inheritDoc} */
public List getEntries() {
if ( pvm != null ) {
List entries = new ArrayList ( 1 );
entries.add ( pvm );
return entries;
} else {
return null;
}
}
/** {@inheritDoc} */
public PairValues getPairValues ( int ci, int gi1, int gi2 ) {
if ( ( pvm != null ) && ( ci < pvm.length ) ) {
PairValues[] pvt = pvm [ ci ];
for ( int i = 0, n = pvt.length; i < n; i++ ) {
PairValues pv = pvt [ i ];
if ( pv != null ) {
int g = pv.getGlyph();
if ( g < gi2 ) {
continue;
} else if ( g == gi2 ) {
return pv;
} else {
break;
}
}
}
}
return null;
}
private void populate ( List entries ) {
if ( entries == null ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, must be non-null" );
} else if ( entries.size() != 1 ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, " + entries.size() + " entries present, but requires 1 entry" );
} else {
Object o;
if ( ( ( o = entries.get(0) ) == null ) || ! ( o instanceof PairValues[][] ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, first (and only) entry must be a PairValues[][], but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
pvm = (PairValues[][]) o;
}
}
}
}
private static class PairSubtableFormat2 extends PairSubtable {
private GlyphClassTable cdt1; // class def table 1
private GlyphClassTable cdt2; // class def table 2
private int nc1; // class 1 count
private int nc2; // class 2 count
private PairValues[][] pvm; // pair values matrix
PairSubtableFormat2 ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
super ( id, sequence, flags, format, coverage, entries );
populate ( entries );
}
/** {@inheritDoc} */
public List getEntries() {
if ( pvm != null ) {
List entries = new ArrayList ( 5 );
entries.add ( cdt1 );
entries.add ( cdt2 );
entries.add ( Integer.valueOf ( nc1 ) );
entries.add ( Integer.valueOf ( nc2 ) );
entries.add ( pvm );
return entries;
} else {
return null;
}
}
/** {@inheritDoc} */
public PairValues getPairValues ( int ci, int gi1, int gi2 ) {
if ( pvm != null ) {
int c1 = cdt1.getClassIndex ( gi1, 0 );
if ( ( c1 >= 0 ) && ( c1 < nc1 ) && ( c1 < pvm.length ) ) {
PairValues[] pvt = pvm [ c1 ];
if ( pvt != null ) {
int c2 = cdt2.getClassIndex ( gi2, 0 );
if ( ( c2 >= 0 ) && ( c2 < nc2 ) && ( c2 < pvt.length ) ) {
return pvt [ c2 ];
}
}
}
}
return null;
}
private void populate ( List entries ) {
if ( entries == null ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, must be non-null" );
} else if ( entries.size() != 5 ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, " + entries.size() + " entries present, but requires 5 entries" );
} else {
Object o;
if ( ( ( o = entries.get(0) ) == null ) || ! ( o instanceof GlyphClassTable ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, first entry must be an GlyphClassTable, but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
cdt1 = (GlyphClassTable) o;
}
if ( ( ( o = entries.get(1) ) == null ) || ! ( o instanceof GlyphClassTable ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, second entry must be an GlyphClassTable, but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
cdt2 = (GlyphClassTable) o;
}
if ( ( ( o = entries.get(2) ) == null ) || ! ( o instanceof Integer ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, third entry must be an Integer, but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
nc1 = ((Integer)(o)).intValue();
}
if ( ( ( o = entries.get(3) ) == null ) || ! ( o instanceof Integer ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, fourth entry must be an Integer, but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
nc2 = ((Integer)(o)).intValue();
}
if ( ( ( o = entries.get(4) ) == null ) || ! ( o instanceof PairValues[][] ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, fifth entry must be a PairValues[][], but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
pvm = (PairValues[][]) o;
}
}
}
}
private abstract static class CursiveSubtable extends GlyphPositioningSubtable {
CursiveSubtable ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
super ( id, sequence, flags, format, coverage );
}
/** {@inheritDoc} */
public int getType() {
return GPOS_LOOKUP_TYPE_CURSIVE;
}
/** {@inheritDoc} */
public boolean isCompatible ( GlyphSubtable subtable ) {
return subtable instanceof CursiveSubtable;
}
/** {@inheritDoc} */
public boolean position ( GlyphPositioningState ps ) {
boolean applied = false;
int gi = ps.getGlyph(0);
int ci;
if ( ( ci = getCoverageIndex ( gi ) ) >= 0 ) {
int[] counts = ps.getGlyphsAvailable ( 0 );
int nga = counts[0];
if ( nga > 1 ) {
int[] iga = ps.getGlyphs ( 0, 2, null, counts );
if ( ( iga != null ) && ( iga.length == 2 ) ) {
// int gi1 = gi;
int ci1 = ci;
int gi2 = iga [ 1 ];
int ci2 = getCoverageIndex ( gi2 );
Anchor[] aa = getExitEntryAnchors ( ci1, ci2 );
if ( aa != null ) {
Anchor exa = aa [ 0 ];
Anchor ena = aa [ 1 ];
// int exw = ps.getWidth ( gi1 );
int enw = ps.getWidth ( gi2 );
if ( ( exa != null ) && ( ena != null ) ) {
Value v = ena.getAlignmentAdjustment ( exa );
v.adjust ( - enw, 0, 0, 0 );
if ( ps.adjust ( v ) ) {
ps.setAdjusted ( true );
}
}
// consume only first glyph of exit/entry glyph pair
ps.consume ( 1 );
applied = true;
}
}
}
}
return applied;
}
/**
* Obtain exit anchor for first glyph with coverage index <code>ci1</code> and entry anchor for second
* glyph with coverage index <code>ci2</code>.
* @param ci1 coverage index of first glyph (may be negative)
* @param ci2 coverage index of second glyph (may be negative)
* @return array of two anchors or null if either coverage index is negative or corresponding anchor is
* missing, where the first entry is the exit anchor of the first glyph and the second entry is the
* entry anchor of the second glyph
*/
public abstract Anchor[] getExitEntryAnchors ( int ci1, int ci2 );
static GlyphPositioningSubtable create ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
if ( format == 1 ) {
return new CursiveSubtableFormat1 ( id, sequence, flags, format, coverage, entries );
} else {
throw new UnsupportedOperationException();
}
}
}
private static class CursiveSubtableFormat1 extends CursiveSubtable {
private Anchor[] aa; // anchor array, where even entries are entry anchors, and odd entries are exit anchors
CursiveSubtableFormat1 ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
super ( id, sequence, flags, format, coverage, entries );
populate ( entries );
}
/** {@inheritDoc} */
public List getEntries() {
if ( aa != null ) {
List entries = new ArrayList ( 1 );
entries.add ( aa );
return entries;
} else {
return null;
}
}
/** {@inheritDoc} */
public Anchor[] getExitEntryAnchors ( int ci1, int ci2 ) {
if ( ( ci1 >= 0 ) && ( ci2 >= 0 ) ) {
int ai1 = ( ci1 * 2 ) + 1; // ci1 denotes glyph with exit anchor
int ai2 = ( ci2 * 2 ) + 0; // ci2 denotes glyph with entry anchor
if ( ( aa != null ) && ( ai1 < aa.length ) && ( ai2 < aa.length ) ) {
Anchor exa = aa [ ai1 ];
Anchor ena = aa [ ai2 ];
if ( ( exa != null ) && ( ena != null ) ) {
return new Anchor[] { exa, ena };
}
}
}
return null;
}
private void populate ( List entries ) {
if ( entries == null ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, must be non-null" );
} else if ( entries.size() != 1 ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, " + entries.size() + " entries present, but requires 1 entry" );
} else {
Object o;
if ( ( ( o = entries.get(0) ) == null ) || ! ( o instanceof Anchor[] ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, first (and only) entry must be a Anchor[], but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else if ( ( ( (Anchor[]) o ) . length % 2 ) != 0 ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, Anchor[] array must have an even number of entries, but has: " + ( (Anchor[]) o ) . length );
} else {
aa = (Anchor[]) o;
}
}
}
}
private abstract static class MarkToBaseSubtable extends GlyphPositioningSubtable {
MarkToBaseSubtable ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
super ( id, sequence, flags, format, coverage );
}
/** {@inheritDoc} */
public int getType() {
return GPOS_LOOKUP_TYPE_MARK_TO_BASE;
}
/** {@inheritDoc} */
public boolean isCompatible ( GlyphSubtable subtable ) {
return subtable instanceof MarkToBaseSubtable;
}
/** {@inheritDoc} */
public boolean position ( GlyphPositioningState ps ) {
boolean applied = false;
int giMark = ps.getGlyph();
int ciMark;
if ( ( ciMark = getCoverageIndex ( giMark ) ) >= 0 ) {
MarkAnchor ma = getMarkAnchor ( ciMark, giMark );
if ( ma != null ) {
for ( int i = 0, n = ps.getPosition(); i < n; i++ ) {
int gi = ps.getGlyph ( - ( i + 1 ) );
if ( ps.isMark ( gi ) ) {
continue;
} else {
Anchor a = getBaseAnchor ( gi, ma.getMarkClass() );
if ( a != null ) {
Value v = a.getAlignmentAdjustment ( ma );
// start experimental fix for END OF AYAH in Lateef/Scheherazade
int[] aa = ps.getAdjustment();
if ( aa[2] == 0 ) {
v.adjust ( 0, 0, - ps.getWidth ( giMark ), 0 );
}
// end experimental fix for END OF AYAH in Lateef/Scheherazade
if ( ps.adjust ( v ) ) {
ps.setAdjusted ( true );
}
}
ps.consume(1);
applied = true;
break;
}
}
}
}
return applied;
}
/**
* Obtain mark anchor associated with mark coverage index.
* @param ciMark coverage index
* @param giMark input glyph index of mark glyph
* @return mark anchor or null if none applies
*/
public abstract MarkAnchor getMarkAnchor ( int ciMark, int giMark );
/**
* Obtain anchor associated with base glyph index and mark class.
* @param giBase input glyph index of base glyph
* @param markClass class number of mark glyph
* @return anchor or null if none applies
*/
public abstract Anchor getBaseAnchor ( int giBase, int markClass );
static GlyphPositioningSubtable create ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
if ( format == 1 ) {
return new MarkToBaseSubtableFormat1 ( id, sequence, flags, format, coverage, entries );
} else {
throw new UnsupportedOperationException();
}
}
}
private static class MarkToBaseSubtableFormat1 extends MarkToBaseSubtable {
private GlyphCoverageTable bct; // base coverage table
private int nmc; // mark class count
private MarkAnchor[] maa; // mark anchor array, ordered by mark coverage index
private Anchor[][] bam; // base anchor matrix, ordered by base coverage index, then by mark class
MarkToBaseSubtableFormat1 ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
super ( id, sequence, flags, format, coverage, entries );
populate ( entries );
}
/** {@inheritDoc} */
public List getEntries() {
if ( ( bct != null ) && ( maa != null ) && ( nmc > 0 ) && ( bam != null ) ) {
List entries = new ArrayList ( 4 );
entries.add ( bct );
entries.add ( Integer.valueOf ( nmc ) );
entries.add ( maa );
entries.add ( bam );
return entries;
} else {
return null;
}
}
/** {@inheritDoc} */
public MarkAnchor getMarkAnchor ( int ciMark, int giMark ) {
if ( ( maa != null ) && ( ciMark < maa.length ) ) {
return maa [ ciMark ];
} else {
return null;
}
}
/** {@inheritDoc} */
public Anchor getBaseAnchor ( int giBase, int markClass ) {
int ciBase;
if ( ( bct != null ) && ( ( ciBase = bct.getCoverageIndex ( giBase ) ) >= 0 ) ) {
if ( ( bam != null ) && ( ciBase < bam.length ) ) {
Anchor[] ba = bam [ ciBase ];
if ( ( ba != null ) && ( markClass < ba.length ) ) {
return ba [ markClass ];
}
}
}
return null;
}
private void populate ( List entries ) {
if ( entries == null ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, must be non-null" );
} else if ( entries.size() != 4 ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, " + entries.size() + " entries present, but requires 4 entries" );
} else {
Object o;
if ( ( ( o = entries.get(0) ) == null ) || ! ( o instanceof GlyphCoverageTable ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, first entry must be an GlyphCoverageTable, but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
bct = (GlyphCoverageTable) o;
}
if ( ( ( o = entries.get(1) ) == null ) || ! ( o instanceof Integer ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, second entry must be an Integer, but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
nmc = ((Integer)(o)).intValue();
}
if ( ( ( o = entries.get(2) ) == null ) || ! ( o instanceof MarkAnchor[] ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, third entry must be a MarkAnchor[], but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
maa = (MarkAnchor[]) o;
}
if ( ( ( o = entries.get(3) ) == null ) || ! ( o instanceof Anchor[][] ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, fourth entry must be a Anchor[][], but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
bam = (Anchor[][]) o;
}
}
}
}
private abstract static class MarkToLigatureSubtable extends GlyphPositioningSubtable {
MarkToLigatureSubtable ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
super ( id, sequence, flags, format, coverage );
}
/** {@inheritDoc} */
public int getType() {
return GPOS_LOOKUP_TYPE_MARK_TO_LIGATURE;
}
/** {@inheritDoc} */
public boolean isCompatible ( GlyphSubtable subtable ) {
return subtable instanceof MarkToLigatureSubtable;
}
/** {@inheritDoc} */
public boolean position ( GlyphPositioningState ps ) {
boolean applied = false;
int giMark = ps.getGlyph();
int ciMark;
if ( ( ciMark = getCoverageIndex ( giMark ) ) >= 0 ) {
MarkAnchor ma = getMarkAnchor ( ciMark, giMark );
int mxc = getMaxComponentCount();
if ( ma != null ) {
for ( int i = 0, n = ps.getPosition(); i < n; i++ ) {
int gi = ps.getGlyph ( - ( i + 1 ) );
if ( ps.isMark ( gi ) ) {
continue;
} else {
Anchor a = getLigatureAnchor ( gi, mxc, i, ma.getMarkClass() );
if ( a != null ) {
if ( ps.adjust ( a.getAlignmentAdjustment ( ma ) ) ) {
ps.setAdjusted ( true );
}
}
ps.consume(1);
applied = true;
break;
}
}
}
}
return applied;
}
/**
* Obtain mark anchor associated with mark coverage index.
* @param ciMark coverage index
* @param giMark input glyph index of mark glyph
* @return mark anchor or null if none applies
*/
public abstract MarkAnchor getMarkAnchor ( int ciMark, int giMark );
/**
* Obtain maximum component count.
* @return maximum component count (>=0)
*/
public abstract int getMaxComponentCount();
/**
* Obtain anchor associated with ligature glyph index and mark class.
* @param giLig input glyph index of ligature glyph
* @param maxComponents maximum component count
* @param component component number (0...maxComponents-1)
* @param markClass class number of mark glyph
* @return anchor or null if none applies
*/
public abstract Anchor getLigatureAnchor ( int giLig, int maxComponents, int component, int markClass );
static GlyphPositioningSubtable create ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
if ( format == 1 ) {
return new MarkToLigatureSubtableFormat1 ( id, sequence, flags, format, coverage, entries );
} else {
throw new UnsupportedOperationException();
}
}
}
private static class MarkToLigatureSubtableFormat1 extends MarkToLigatureSubtable {
private GlyphCoverageTable lct; // ligature coverage table
private int nmc; // mark class count
private int mxc; // maximum ligature component count
private MarkAnchor[] maa; // mark anchor array, ordered by mark coverage index
private Anchor[][][] lam; // ligature anchor matrix, ordered by ligature coverage index, then ligature component, then mark class
MarkToLigatureSubtableFormat1 ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
super ( id, sequence, flags, format, coverage, entries );
populate ( entries );
}
/** {@inheritDoc} */
public List getEntries() {
if ( lam != null ) {
List entries = new ArrayList ( 5 );
entries.add ( lct );
entries.add ( Integer.valueOf ( nmc ) );
entries.add ( Integer.valueOf ( mxc ) );
entries.add ( maa );
entries.add ( lam );
return entries;
} else {
return null;
}
}
/** {@inheritDoc} */
public MarkAnchor getMarkAnchor ( int ciMark, int giMark ) {
if ( ( maa != null ) && ( ciMark < maa.length ) ) {
return maa [ ciMark ];
} else {
return null;
}
}
/** {@inheritDoc} */
public int getMaxComponentCount() {
return mxc;
}
/** {@inheritDoc} */
public Anchor getLigatureAnchor ( int giLig, int maxComponents, int component, int markClass ) {
int ciLig;
if ( ( lct != null ) && ( ( ciLig = lct.getCoverageIndex ( giLig ) ) >= 0 ) ) {
if ( ( lam != null ) && ( ciLig < lam.length ) ) {
Anchor[][] lcm = lam [ ciLig ];
if ( component < maxComponents ) {
Anchor[] la = lcm [ component ];
if ( ( la != null ) && ( markClass < la.length ) ) {
return la [ markClass ];
}
}
}
}
return null;
}
private void populate ( List entries ) {
if ( entries == null ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, must be non-null" );
} else if ( entries.size() != 5 ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, " + entries.size() + " entries present, but requires 5 entries" );
} else {
Object o;
if ( ( ( o = entries.get(0) ) == null ) || ! ( o instanceof GlyphCoverageTable ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, first entry must be an GlyphCoverageTable, but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
lct = (GlyphCoverageTable) o;
}
if ( ( ( o = entries.get(1) ) == null ) || ! ( o instanceof Integer ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, second entry must be an Integer, but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
nmc = ((Integer)(o)).intValue();
}
if ( ( ( o = entries.get(2) ) == null ) || ! ( o instanceof Integer ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, third entry must be an Integer, but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
mxc = ((Integer)(o)).intValue();
}
if ( ( ( o = entries.get(3) ) == null ) || ! ( o instanceof MarkAnchor[] ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, fourth entry must be a MarkAnchor[], but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
maa = (MarkAnchor[]) o;
}
if ( ( ( o = entries.get(4) ) == null ) || ! ( o instanceof Anchor[][][] ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, fifth entry must be a Anchor[][][], but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
lam = (Anchor[][][]) o;
}
}
}
}
private abstract static class MarkToMarkSubtable extends GlyphPositioningSubtable {
MarkToMarkSubtable ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
super ( id, sequence, flags, format, coverage );
}
/** {@inheritDoc} */
public int getType() {
return GPOS_LOOKUP_TYPE_MARK_TO_MARK;
}
/** {@inheritDoc} */
public boolean isCompatible ( GlyphSubtable subtable ) {
return subtable instanceof MarkToMarkSubtable;
}
/** {@inheritDoc} */
public boolean position ( GlyphPositioningState ps ) {
boolean applied = false;
int giMark1 = ps.getGlyph();
int ciMark1;
if ( ( ciMark1 = getCoverageIndex ( giMark1 ) ) >= 0 ) {
MarkAnchor ma = getMark1Anchor ( ciMark1, giMark1 );
if ( ma != null ) {
if ( ps.hasPrev() ) {
Anchor a = getMark2Anchor ( ps.getGlyph(-1), ma.getMarkClass() );
if ( a != null ) {
if ( ps.adjust ( a.getAlignmentAdjustment ( ma ) ) ) {
ps.setAdjusted ( true );
}
}
ps.consume(1);
applied = true;
}
}
}
return applied;
}
/**
* Obtain mark 1 anchor associated with mark 1 coverage index.
* @param ciMark1 mark 1 coverage index
* @param giMark1 input glyph index of mark 1 glyph
* @return mark 1 anchor or null if none applies
*/
public abstract MarkAnchor getMark1Anchor ( int ciMark1, int giMark1 );
/**
* Obtain anchor associated with mark 2 glyph index and mark 1 class.
* @param giMark2 input glyph index of mark 2 glyph
* @param markClass class number of mark 1 glyph
* @return anchor or null if none applies
*/
public abstract Anchor getMark2Anchor ( int giBase, int markClass );
static GlyphPositioningSubtable create ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
if ( format == 1 ) {
return new MarkToMarkSubtableFormat1 ( id, sequence, flags, format, coverage, entries );
} else {
throw new UnsupportedOperationException();
}
}
}
private static class MarkToMarkSubtableFormat1 extends MarkToMarkSubtable {
private GlyphCoverageTable mct2; // mark 2 coverage table
private int nmc; // mark class count
private MarkAnchor[] maa; // mark1 anchor array, ordered by mark1 coverage index
private Anchor[][] mam; // mark2 anchor matrix, ordered by mark2 coverage index, then by mark1 class
MarkToMarkSubtableFormat1 ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
super ( id, sequence, flags, format, coverage, entries );
populate ( entries );
}
/** {@inheritDoc} */
public List getEntries() {
if ( ( mct2 != null ) && ( maa != null ) && ( nmc > 0 ) && ( mam != null ) ) {
List entries = new ArrayList ( 4 );
entries.add ( mct2 );
entries.add ( Integer.valueOf ( nmc ) );
entries.add ( maa );
entries.add ( mam );
return entries;
} else {
return null;
}
}
/** {@inheritDoc} */
public MarkAnchor getMark1Anchor ( int ciMark1, int giMark1 ) {
if ( ( maa != null ) && ( ciMark1 < maa.length ) ) {
return maa [ ciMark1 ];
} else {
return null;
}
}
/** {@inheritDoc} */
public Anchor getMark2Anchor ( int giMark2, int markClass ) {
int ciMark2;
if ( ( mct2 != null ) && ( ( ciMark2 = mct2.getCoverageIndex ( giMark2 ) ) >= 0 ) ) {
if ( ( mam != null ) && ( ciMark2 < mam.length ) ) {
Anchor[] ma = mam [ ciMark2 ];
if ( ( ma != null ) && ( markClass < ma.length ) ) {
return ma [ markClass ];
}
}
}
return null;
}
private void populate ( List entries ) {
if ( entries == null ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, must be non-null" );
} else if ( entries.size() != 4 ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, " + entries.size() + " entries present, but requires 4 entries" );
} else {
Object o;
if ( ( ( o = entries.get(0) ) == null ) || ! ( o instanceof GlyphCoverageTable ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, first entry must be an GlyphCoverageTable, but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
mct2 = (GlyphCoverageTable) o;
}
if ( ( ( o = entries.get(1) ) == null ) || ! ( o instanceof Integer ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, second entry must be an Integer, but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
nmc = ((Integer)(o)).intValue();
}
if ( ( ( o = entries.get(2) ) == null ) || ! ( o instanceof MarkAnchor[] ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, third entry must be a MarkAnchor[], but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
maa = (MarkAnchor[]) o;
}
if ( ( ( o = entries.get(3) ) == null ) || ! ( o instanceof Anchor[][] ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, fourth entry must be a Anchor[][], but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
mam = (Anchor[][]) o;
}
}
}
}
private abstract static class ContextualSubtable extends GlyphPositioningSubtable {
ContextualSubtable ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
super ( id, sequence, flags, format, coverage );
}
/** {@inheritDoc} */
public int getType() {
return GPOS_LOOKUP_TYPE_CONTEXTUAL;
}
/** {@inheritDoc} */
public boolean isCompatible ( GlyphSubtable subtable ) {
return subtable instanceof ContextualSubtable;
}
/** {@inheritDoc} */
public boolean position ( GlyphPositioningState ps ) {
boolean applied = false;
int gi = ps.getGlyph();
int ci;
if ( ( ci = getCoverageIndex ( gi ) ) >= 0 ) {
int[] rv = new int[1];
RuleLookup[] la = getLookups ( ci, gi, ps, rv );
if ( la != null ) {
ps.apply ( la, rv[0] );
applied = true;
}
}
return applied;
}
/**
* Obtain rule lookups set associated current input glyph context.
* @param ci coverage index of glyph at current position
* @param gi glyph index of glyph at current position
* @param ps glyph positioning state
* @param rv array of ints used to receive multiple return values, must be of length 1 or greater,
* where the first entry is used to return the input sequence length of the matched rule
* @return array of rule lookups or null if none applies
*/
public abstract RuleLookup[] getLookups ( int ci, int gi, GlyphPositioningState ps, int[] rv );
static GlyphPositioningSubtable create ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
if ( format == 1 ) {
return new ContextualSubtableFormat1 ( id, sequence, flags, format, coverage, entries );
} else if ( format == 2 ) {
return new ContextualSubtableFormat2 ( id, sequence, flags, format, coverage, entries );
} else if ( format == 3 ) {
return new ContextualSubtableFormat3 ( id, sequence, flags, format, coverage, entries );
} else {
throw new UnsupportedOperationException();
}
}
}
private static class ContextualSubtableFormat1 extends ContextualSubtable {
private RuleSet[] rsa; // rule set array, ordered by glyph coverage index
ContextualSubtableFormat1 ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
super ( id, sequence, flags, format, coverage, entries );
populate ( entries );
}
/** {@inheritDoc} */
public List getEntries() {
if ( rsa != null ) {
List entries = new ArrayList ( 1 );
entries.add ( rsa );
return entries;
} else {
return null;
}
}
/** {@inheritDoc} */
public void resolveLookupReferences ( Map/*<String,LookupTable>*/ lookupTables ) {
GlyphTable.resolveLookupReferences ( rsa, lookupTables );
}
/** {@inheritDoc} */
public RuleLookup[] getLookups ( int ci, int gi, GlyphPositioningState ps, int[] rv ) {
assert ps != null;
assert ( rv != null ) && ( rv.length > 0 );
assert rsa != null;
if ( rsa.length > 0 ) {
RuleSet rs = rsa [ 0 ];
if ( rs != null ) {
Rule[] ra = rs.getRules();
for ( int i = 0, n = ra.length; i < n; i++ ) {
Rule r = ra [ i ];
if ( ( r != null ) && ( r instanceof ChainedGlyphSequenceRule ) ) {
ChainedGlyphSequenceRule cr = (ChainedGlyphSequenceRule) r;
int[] iga = cr.getGlyphs ( gi );
if ( matches ( ps, iga, 0, rv ) ) {
return r.getLookups();
}
}
}
}
}
return null;
}
static boolean matches ( GlyphPositioningState ps, int[] glyphs, int offset, int[] rv ) {
if ( ( glyphs == null ) || ( glyphs.length == 0 ) ) {
return true; // match null or empty glyph sequence
} else {
boolean reverse = offset < 0;
GlyphTester ignores = ps.getIgnoreDefault();
int[] counts = ps.getGlyphsAvailable ( offset, reverse, ignores );
int nga = counts[0];
int ngm = glyphs.length;
if ( nga < ngm ) {
return false; // insufficient glyphs available to match
} else {
int[] ga = ps.getGlyphs ( offset, ngm, reverse, ignores, null, counts );
for ( int k = 0; k < ngm; k++ ) {
if ( ga [ k ] != glyphs [ k ] ) {
return false; // match fails at ga [ k ]
}
}
if ( rv != null ) {
rv[0] = counts[0] + counts[1];
}
return true; // all glyphs match
}
}
}
private void populate ( List entries ) {
if ( entries == null ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, must be non-null" );
} else if ( entries.size() != 1 ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, " + entries.size() + " entries present, but requires 1 entry" );
} else {
Object o;
if ( ( ( o = entries.get(0) ) == null ) || ! ( o instanceof RuleSet[] ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, first entry must be an RuleSet[], but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
rsa = (RuleSet[]) o;
}
}
}
}
private static class ContextualSubtableFormat2 extends ContextualSubtable {
private GlyphClassTable cdt; // class def table
private int ngc; // class set count
private RuleSet[] rsa; // rule set array, ordered by class number [0...ngc - 1]
ContextualSubtableFormat2 ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
super ( id, sequence, flags, format, coverage, entries );
populate ( entries );
}
/** {@inheritDoc} */
public List getEntries() {
if ( rsa != null ) {
List entries = new ArrayList ( 3 );
entries.add ( cdt );
entries.add ( Integer.valueOf ( ngc ) );
entries.add ( rsa );
return entries;
} else {
return null;
}
}
/** {@inheritDoc} */
public void resolveLookupReferences ( Map/*<String,LookupTable>*/ lookupTables ) {
GlyphTable.resolveLookupReferences ( rsa, lookupTables );
}
/** {@inheritDoc} */
public RuleLookup[] getLookups ( int ci, int gi, GlyphPositioningState ps, int[] rv ) {
assert ps != null;
assert ( rv != null ) && ( rv.length > 0 );
assert rsa != null;
if ( rsa.length > 0 ) {
RuleSet rs = rsa [ 0 ];
if ( rs != null ) {
Rule[] ra = rs.getRules();
for ( int i = 0, n = ra.length; i < n; i++ ) {
Rule r = ra [ i ];
if ( ( r != null ) && ( r instanceof ChainedClassSequenceRule ) ) {
ChainedClassSequenceRule cr = (ChainedClassSequenceRule) r;
int[] ca = cr.getClasses ( cdt.getClassIndex ( gi, ps.getClassMatchSet ( gi ) ) );
if ( matches ( ps, cdt, ca, 0, rv ) ) {
return r.getLookups();
}
}
}
}
}
return null;
}
static boolean matches ( GlyphPositioningState ps, GlyphClassTable cdt, int[] classes, int offset, int[] rv ) {
if ( ( cdt == null ) || ( classes == null ) || ( classes.length == 0 ) ) {
return true; // match null class definitions, null or empty class sequence
} else {
boolean reverse = offset < 0;
GlyphTester ignores = ps.getIgnoreDefault();
int[] counts = ps.getGlyphsAvailable ( offset, reverse, ignores );
int nga = counts[0];
int ngm = classes.length;
if ( nga < ngm ) {
return false; // insufficient glyphs available to match
} else {
int[] ga = ps.getGlyphs ( offset, ngm, reverse, ignores, null, counts );
for ( int k = 0; k < ngm; k++ ) {
int gi = ga [ k ];
int ms = ps.getClassMatchSet ( gi );
int gc = cdt.getClassIndex ( gi, ms );
if ( ( gc < 0 ) || ( gc >= cdt.getClassSize ( ms ) ) ) {
return false; // none or invalid class fails mat ch
} else if ( gc != classes [ k ] ) {
return false; // match fails at ga [ k ]
}
}
if ( rv != null ) {
rv[0] = counts[0] + counts[1];
}
return true; // all glyphs match
}
}
}
private void populate ( List entries ) {
if ( entries == null ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, must be non-null" );
} else if ( entries.size() != 3 ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, " + entries.size() + " entries present, but requires 3 entries" );
} else {
Object o;
if ( ( ( o = entries.get(0) ) == null ) || ! ( o instanceof GlyphClassTable ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, first entry must be an GlyphClassTable, but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
cdt = (GlyphClassTable) o;
}
if ( ( ( o = entries.get(1) ) == null ) || ! ( o instanceof Integer ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, second entry must be an Integer, but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
ngc = ((Integer)(o)).intValue();
}
if ( ( ( o = entries.get(2) ) == null ) || ! ( o instanceof RuleSet[] ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, third entry must be an RuleSet[], but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
rsa = (RuleSet[]) o;
if ( rsa.length != ngc ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, RuleSet[] length is " + rsa.length + ", but expected " + ngc + " glyph classes" );
}
}
}
}
}
private static class ContextualSubtableFormat3 extends ContextualSubtable {
private RuleSet[] rsa; // rule set array, containing a single rule set
ContextualSubtableFormat3 ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
super ( id, sequence, flags, format, coverage, entries );
populate ( entries );
}
/** {@inheritDoc} */
public List getEntries() {
if ( rsa != null ) {
List entries = new ArrayList ( 1 );
entries.add ( rsa );
return entries;
} else {
return null;
}
}
/** {@inheritDoc} */
public void resolveLookupReferences ( Map/*<String,LookupTable>*/ lookupTables ) {
GlyphTable.resolveLookupReferences ( rsa, lookupTables );
}
/** {@inheritDoc} */
public RuleLookup[] getLookups ( int ci, int gi, GlyphPositioningState ps, int[] rv ) {
assert ps != null;
assert ( rv != null ) && ( rv.length > 0 );
assert rsa != null;
if ( rsa.length > 0 ) {
RuleSet rs = rsa [ 0 ];
if ( rs != null ) {
Rule[] ra = rs.getRules();
for ( int i = 0, n = ra.length; i < n; i++ ) {
Rule r = ra [ i ];
if ( ( r != null ) && ( r instanceof ChainedCoverageSequenceRule ) ) {
ChainedCoverageSequenceRule cr = (ChainedCoverageSequenceRule) r;
GlyphCoverageTable[] gca = cr.getCoverages();
if ( matches ( ps, gca, 0, rv ) ) {
return r.getLookups();
}
}
}
}
}
return null;
}
static boolean matches ( GlyphPositioningState ps, GlyphCoverageTable[] gca, int offset, int[] rv ) {
if ( ( gca == null ) || ( gca.length == 0 ) ) {
return true; // match null or empty coverage array
} else {
boolean reverse = offset < 0;
GlyphTester ignores = ps.getIgnoreDefault();
int[] counts = ps.getGlyphsAvailable ( offset, reverse, ignores );
int nga = counts[0];
int ngm = gca.length;
if ( nga < ngm ) {
return false; // insufficient glyphs available to match
} else {
int[] ga = ps.getGlyphs ( offset, ngm, reverse, ignores, null, counts );
for ( int k = 0; k < ngm; k++ ) {
GlyphCoverageTable ct = gca [ k ];
if ( ct != null ) {
if ( ct.getCoverageIndex ( ga [ k ] ) < 0 ) {
return false; // match fails at ga [ k ]
}
}
}
if ( rv != null ) {
rv[0] = counts[0] + counts[1];
}
return true; // all glyphs match
}
}
}
private void populate ( List entries ) {
if ( entries == null ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, must be non-null" );
} else if ( entries.size() != 1 ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, " + entries.size() + " entries present, but requires 1 entry" );
} else {
Object o;
if ( ( ( o = entries.get(0) ) == null ) || ! ( o instanceof RuleSet[] ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, first entry must be an RuleSet[], but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
rsa = (RuleSet[]) o;
}
}
}
}
private abstract static class ChainedContextualSubtable extends GlyphPositioningSubtable {
ChainedContextualSubtable ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
super ( id, sequence, flags, format, coverage );
}
/** {@inheritDoc} */
public int getType() {
return GPOS_LOOKUP_TYPE_CHAINED_CONTEXTUAL;
}
/** {@inheritDoc} */
public boolean isCompatible ( GlyphSubtable subtable ) {
return subtable instanceof ChainedContextualSubtable;
}
/** {@inheritDoc} */
public boolean position ( GlyphPositioningState ps ) {
boolean applied = false;
int gi = ps.getGlyph();
int ci;
if ( ( ci = getCoverageIndex ( gi ) ) >= 0 ) {
int[] rv = new int[1];
RuleLookup[] la = getLookups ( ci, gi, ps, rv );
if ( la != null ) {
ps.apply ( la, rv[0] );
applied = true;
}
}
return applied;
}
/**
* Obtain rule lookups set associated current input glyph context.
* @param ci coverage index of glyph at current position
* @param gi glyph index of glyph at current position
* @param ps glyph positioning state
* @param rv array of ints used to receive multiple return values, must be of length 1 or greater,
* where the first entry is used to return the input sequence length of the matched rule
* @return array of rule lookups or null if none applies
*/
public abstract RuleLookup[] getLookups ( int ci, int gi, GlyphPositioningState ps, int[] rv );
static GlyphPositioningSubtable create ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
if ( format == 1 ) {
return new ChainedContextualSubtableFormat1 ( id, sequence, flags, format, coverage, entries );
} else if ( format == 2 ) {
return new ChainedContextualSubtableFormat2 ( id, sequence, flags, format, coverage, entries );
} else if ( format == 3 ) {
return new ChainedContextualSubtableFormat3 ( id, sequence, flags, format, coverage, entries );
} else {
throw new UnsupportedOperationException();
}
}
}
private static class ChainedContextualSubtableFormat1 extends ChainedContextualSubtable {
private RuleSet[] rsa; // rule set array, ordered by glyph coverage index
ChainedContextualSubtableFormat1 ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
super ( id, sequence, flags, format, coverage, entries );
populate ( entries );
}
/** {@inheritDoc} */
public List getEntries() {
if ( rsa != null ) {
List entries = new ArrayList ( 1 );
entries.add ( rsa );
return entries;
} else {
return null;
}
}
/** {@inheritDoc} */
public void resolveLookupReferences ( Map/*<String,LookupTable>*/ lookupTables ) {
GlyphTable.resolveLookupReferences ( rsa, lookupTables );
}
/** {@inheritDoc} */
public RuleLookup[] getLookups ( int ci, int gi, GlyphPositioningState ps, int[] rv ) {
assert ps != null;
assert ( rv != null ) && ( rv.length > 0 );
assert rsa != null;
if ( rsa.length > 0 ) {
RuleSet rs = rsa [ 0 ];
if ( rs != null ) {
Rule[] ra = rs.getRules();
for ( int i = 0, n = ra.length; i < n; i++ ) {
Rule r = ra [ i ];
if ( ( r != null ) && ( r instanceof ChainedGlyphSequenceRule ) ) {
ChainedGlyphSequenceRule cr = (ChainedGlyphSequenceRule) r;
int[] iga = cr.getGlyphs ( gi );
if ( matches ( ps, iga, 0, rv ) ) {
int[] bga = cr.getBacktrackGlyphs();
if ( matches ( ps, bga, -1, null ) ) {
int[] lga = cr.getLookaheadGlyphs();
if ( matches ( ps, lga, rv[0], null ) ) {
return r.getLookups();
}
}
}
}
}
}
}
return null;
}
private boolean matches ( GlyphPositioningState ps, int[] glyphs, int offset, int[] rv ) {
return ContextualSubtableFormat1.matches ( ps, glyphs, offset, rv );
}
private void populate ( List entries ) {
if ( entries == null ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, must be non-null" );
} else if ( entries.size() != 1 ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, " + entries.size() + " entries present, but requires 1 entry" );
} else {
Object o;
if ( ( ( o = entries.get(0) ) == null ) || ! ( o instanceof RuleSet[] ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, first entry must be an RuleSet[], but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
rsa = (RuleSet[]) o;
}
}
}
}
private static class ChainedContextualSubtableFormat2 extends ChainedContextualSubtable {
private GlyphClassTable icdt; // input class def table
private GlyphClassTable bcdt; // backtrack class def table
private GlyphClassTable lcdt; // lookahead class def table
private int ngc; // class set count
private RuleSet[] rsa; // rule set array, ordered by class number [0...ngc - 1]
ChainedContextualSubtableFormat2 ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
super ( id, sequence, flags, format, coverage, entries );
populate ( entries );
}
/** {@inheritDoc} */
public List getEntries() {
if ( rsa != null ) {
List entries = new ArrayList ( 5 );
entries.add ( icdt );
entries.add ( bcdt );
entries.add ( lcdt );
entries.add ( Integer.valueOf ( ngc ) );
entries.add ( rsa );
return entries;
} else {
return null;
}
}
/** {@inheritDoc} */
public void resolveLookupReferences ( Map/*<String,LookupTable>*/ lookupTables ) {
GlyphTable.resolveLookupReferences ( rsa, lookupTables );
}
/** {@inheritDoc} */
public RuleLookup[] getLookups ( int ci, int gi, GlyphPositioningState ps, int[] rv ) {
assert ps != null;
assert ( rv != null ) && ( rv.length > 0 );
assert rsa != null;
if ( rsa.length > 0 ) {
RuleSet rs = rsa [ 0 ];
if ( rs != null ) {
Rule[] ra = rs.getRules();
for ( int i = 0, n = ra.length; i < n; i++ ) {
Rule r = ra [ i ];
if ( ( r != null ) && ( r instanceof ChainedClassSequenceRule ) ) {
ChainedClassSequenceRule cr = (ChainedClassSequenceRule) r;
int[] ica = cr.getClasses ( icdt.getClassIndex ( gi, ps.getClassMatchSet ( gi ) ) );
if ( matches ( ps, icdt, ica, 0, rv ) ) {
int[] bca = cr.getBacktrackClasses();
if ( matches ( ps, bcdt, bca, -1, null ) ) {
int[] lca = cr.getLookaheadClasses();
if ( matches ( ps, lcdt, lca, rv[0], null ) ) {
return r.getLookups();
}
}
}
}
}
}
}
return null;
}
private boolean matches ( GlyphPositioningState ps, GlyphClassTable cdt, int[] classes, int offset, int[] rv ) {
return ContextualSubtableFormat2.matches ( ps, cdt, classes, offset, rv );
}
private void populate ( List entries ) {
if ( entries == null ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, must be non-null" );
} else if ( entries.size() != 5 ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, " + entries.size() + " entries present, but requires 5 entries" );
} else {
Object o;
if ( ( ( o = entries.get(0) ) == null ) || ! ( o instanceof GlyphClassTable ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, first entry must be an GlyphClassTable, but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
icdt = (GlyphClassTable) o;
}
if ( ( ( o = entries.get(1) ) != null ) && ! ( o instanceof GlyphClassTable ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, second entry must be an GlyphClassTable, but is: " + o.getClass() );
} else {
bcdt = (GlyphClassTable) o;
}
if ( ( ( o = entries.get(2) ) != null ) && ! ( o instanceof GlyphClassTable ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, third entry must be an GlyphClassTable, but is: " + o.getClass() );
} else {
lcdt = (GlyphClassTable) o;
}
if ( ( ( o = entries.get(3) ) == null ) || ! ( o instanceof Integer ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, fourth entry must be an Integer, but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
ngc = ((Integer)(o)).intValue();
}
if ( ( ( o = entries.get(4) ) == null ) || ! ( o instanceof RuleSet[] ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, fifth entry must be an RuleSet[], but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
rsa = (RuleSet[]) o;
if ( rsa.length != ngc ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, RuleSet[] length is " + rsa.length + ", but expected " + ngc + " glyph classes" );
}
}
}
}
}
private static class ChainedContextualSubtableFormat3 extends ChainedContextualSubtable {
private RuleSet[] rsa; // rule set array, containing a single rule set
ChainedContextualSubtableFormat3 ( String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries ) {
super ( id, sequence, flags, format, coverage, entries );
populate ( entries );
}
/** {@inheritDoc} */
public List getEntries() {
if ( rsa != null ) {
List entries = new ArrayList ( 1 );
entries.add ( rsa );
return entries;
} else {
return null;
}
}
/** {@inheritDoc} */
public void resolveLookupReferences ( Map/*<String,LookupTable>*/ lookupTables ) {
GlyphTable.resolveLookupReferences ( rsa, lookupTables );
}
/** {@inheritDoc} */
public RuleLookup[] getLookups ( int ci, int gi, GlyphPositioningState ps, int[] rv ) {
assert ps != null;
assert ( rv != null ) && ( rv.length > 0 );
assert rsa != null;
if ( rsa.length > 0 ) {
RuleSet rs = rsa [ 0 ];
if ( rs != null ) {
Rule[] ra = rs.getRules();
for ( int i = 0, n = ra.length; i < n; i++ ) {
Rule r = ra [ i ];
if ( ( r != null ) && ( r instanceof ChainedCoverageSequenceRule ) ) {
ChainedCoverageSequenceRule cr = (ChainedCoverageSequenceRule) r;
GlyphCoverageTable[] igca = cr.getCoverages();
if ( matches ( ps, igca, 0, rv ) ) {
GlyphCoverageTable[] bgca = cr.getBacktrackCoverages();
if ( matches ( ps, bgca, -1, null ) ) {
GlyphCoverageTable[] lgca = cr.getLookaheadCoverages();
if ( matches ( ps, lgca, rv[0], null ) ) {
return r.getLookups();
}
}
}
}
}
}
}
return null;
}
private boolean matches ( GlyphPositioningState ps, GlyphCoverageTable[] gca, int offset, int[] rv ) {
return ContextualSubtableFormat3.matches ( ps, gca, offset, rv );
}
private void populate ( List entries ) {
if ( entries == null ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, must be non-null" );
} else if ( entries.size() != 1 ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, " + entries.size() + " entries present, but requires 1 entry" );
} else {
Object o;
if ( ( ( o = entries.get(0) ) == null ) || ! ( o instanceof RuleSet[] ) ) {
throw new AdvancedTypographicTableFormatException ( "illegal entries, first entry must be an RuleSet[], but is: " + ( ( o != null ) ? o.getClass() : null ) );
} else {
rsa = (RuleSet[]) o;
}
}
}
}
/**
* The <code>DeviceTable</code> class implements a positioning device table record, comprising
* adjustments to be made to scaled design units according to the scaled size.
*/
public static class DeviceTable {
private final int startSize;
private final int endSize;
private final int[] deltas;
/**
* Instantiate a DeviceTable.
* @param startSize the
* @param endSize the ending (scaled) size
* @param deltas adjustments for each scaled size
*/
public DeviceTable ( int startSize, int endSize, int[] deltas ) {
assert startSize >= 0;
assert startSize <= endSize;
assert deltas != null;
assert deltas.length == ( endSize - startSize ) + 1;
this.startSize = startSize;
this.endSize = endSize;
this.deltas = deltas;
}
/** @return the start size */
public int getStartSize() {
return startSize;
}
/** @return the end size */
public int getEndSize() {
return endSize;
}
/** @return the deltas */
public int[] getDeltas() {
return deltas;
}
/**
* Find device adjustment.
* @param fontSize the font size to search for
* @return an adjustment if font size matches an entry
*/
public int findAdjustment ( int fontSize ) {
// [TODO] at present, assumes that 1 device unit equals one point
int fs = fontSize / 1000;
if ( fs < startSize ) {
return 0;
} else if ( fs <= endSize ) {
return deltas [ fs - startSize ] * 1000;
} else {
return 0;
}
}
/** {@inheritDoc} */
public String toString() {
return "{ start = " + startSize + ", end = " + endSize + ", deltas = " + Arrays.toString ( deltas ) + "}";
}
}
/**
* The <code>Value</code> 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.
*/
public static class Value {
/** X_PLACEMENT value format flag */
public static final int X_PLACEMENT = 0x0001;
/** Y_PLACEMENT value format flag */
public static final int Y_PLACEMENT = 0x0002;
/** X_ADVANCE value format flag */
public static final int X_ADVANCE = 0x0004;
/** Y_ADVANCE value format flag */
public static final int Y_ADVANCE = 0x0008;
/** X_PLACEMENT_DEVICE value format flag */
public static final int X_PLACEMENT_DEVICE = 0x0010;
/** Y_PLACEMENT_DEVICE value format flag */
public static final int Y_PLACEMENT_DEVICE = 0x0020;
/** X_ADVANCE_DEVICE value format flag */
public static final int X_ADVANCE_DEVICE = 0x0040;
/** Y_ADVANCE_DEVICE value format flag */
public static final int Y_ADVANCE_DEVICE = 0x0080;
/** X_PLACEMENT value index (within adjustments arrays) */
public static final int IDX_X_PLACEMENT = 0;
/** Y_PLACEMENT value index (within adjustments arrays) */
public static final int IDX_Y_PLACEMENT = 1;
/** X_ADVANCE value index (within adjustments arrays) */
public static final int IDX_X_ADVANCE = 2;
/** Y_ADVANCE value index (within adjustments arrays) */
public static final int IDX_Y_ADVANCE = 3;
private int xPlacement; // x placement
private int yPlacement; // y placement
private int xAdvance; // x advance
private int yAdvance; // y advance
private final DeviceTable xPlaDevice; // x placement device table
private final DeviceTable yPlaDevice; // y placement device table
private final DeviceTable xAdvDevice; // x advance device table
private final DeviceTable yAdvDevice; // x advance device table
/**
* Instantiate a Value.
* @param xPlacement the x placement or zero
* @param yPlacement the y placement or zero
* @param xAdvance the x advance or zero
* @param yAdvance the y advance or zero
* @param xPlaDevice the x placement device table or null
* @param yPlaDevice the y placement device table or null
* @param xAdvDevice the x advance device table or null
* @param yAdvDevice the y advance device table or null
*/
public Value ( int xPlacement, int yPlacement, int xAdvance, int yAdvance, DeviceTable xPlaDevice, DeviceTable yPlaDevice, DeviceTable xAdvDevice, DeviceTable yAdvDevice ) {
this.xPlacement = xPlacement;
this.yPlacement = yPlacement;
this.xAdvance = xAdvance;
this.yAdvance = yAdvance;
this.xPlaDevice = xPlaDevice;
this.yPlaDevice = yPlaDevice;
this.xAdvDevice = xAdvDevice;
this.yAdvDevice = yAdvDevice;
}
/** @return the x placement */
public int getXPlacement() {
return xPlacement;
}
/** @return the y placement */
public int getYPlacement() {
return yPlacement;
}
/** @return the x advance */
public int getXAdvance() {
return xAdvance;
}
/** @return the y advance */
public int getYAdvance() {
return yAdvance;
}
/** @return the x placement device table */
public DeviceTable getXPlaDevice() {
return xPlaDevice;
}
/** @return the y placement device table */
public DeviceTable getYPlaDevice() {
return yPlaDevice;
}
/** @return the x advance device table */
public DeviceTable getXAdvDevice() {
return xAdvDevice;
}
/** @return the y advance device table */
public DeviceTable getYAdvDevice() {
return yAdvDevice;
}
/**
* Apply value to specific adjustments to without use of device table adjustments.
* @param xPlacement the x placement or zero
* @param yPlacement the y placement or zero
* @param xAdvance the x advance or zero
* @param yAdvance the y advance or zero
*/
public void adjust ( int xPlacement, int yPlacement, int xAdvance, int yAdvance ) {
this.xPlacement += xPlacement;
this.yPlacement += yPlacement;
this.xAdvance += xAdvance;
this.yAdvance += yAdvance;
}
/**
* Apply value to adjustments using font size for device table adjustments.
* @param adjustments array of four integers containing X,Y placement and X,Y advance adjustments
* @param fontSize font size for device table adjustments
* @return true if some adjustment was made
*/
public boolean adjust ( int[] adjustments, int fontSize ) {
boolean adjust = false;
int dv;
if ( ( dv = xPlacement ) != 0 ) {
adjustments [ IDX_X_PLACEMENT ] += dv;
adjust = true;
}
if ( ( dv = yPlacement ) != 0 ) {
adjustments [ IDX_Y_PLACEMENT ] += dv;
adjust = true;
}
if ( ( dv = xAdvance ) != 0 ) {
adjustments [ IDX_X_ADVANCE ] += dv;
adjust = true;
}
if ( ( dv = yAdvance ) != 0 ) {
adjustments [ IDX_Y_ADVANCE ] += dv;
adjust = true;
}
if ( fontSize != 0 ) {
DeviceTable dt;
if ( ( dt = xPlaDevice ) != null ) {
if ( ( dv = dt.findAdjustment ( fontSize ) ) != 0 ) {
adjustments [ IDX_X_PLACEMENT ] += dv;
adjust = true;
}
}
if ( ( dt = yPlaDevice ) != null ) {
if ( ( dv = dt.findAdjustment ( fontSize ) ) != 0 ) {
adjustments [ IDX_Y_PLACEMENT ] += dv;
adjust = true;
}
}
if ( ( dt = xAdvDevice ) != null ) {
if ( ( dv = dt.findAdjustment ( fontSize ) ) != 0 ) {
adjustments [ IDX_X_ADVANCE ] += dv;
adjust = true;
}
}
if ( ( dt = yAdvDevice ) != null ) {
if ( ( dv = dt.findAdjustment ( fontSize ) ) != 0 ) {
adjustments [ IDX_Y_ADVANCE ] += dv;
adjust = true;
}
}
}
return adjust;
}
/** {@inheritDoc} */
public String toString() {
StringBuffer sb = new StringBuffer();
boolean first = true;
sb.append ( "{ " );
if ( xPlacement != 0 ) {
if ( ! first ) {
sb.append ( ", " );
} else {
first = false;
}
sb.append ( "xPlacement = " + xPlacement );
}
if ( yPlacement != 0 ) {
if ( ! first ) {
sb.append ( ", " );
} else {
first = false;
}
sb.append ( "yPlacement = " + yPlacement );
}
if ( xAdvance != 0 ) {
if ( ! first ) {
sb.append ( ", " );
} else {
first = false;
}
sb.append ( "xAdvance = " + xAdvance );
}
if ( yAdvance != 0 ) {
if ( ! first ) {
sb.append ( ", " );
} else {
first = false;
}
sb.append ( "yAdvance = " + yAdvance );
}
if ( xPlaDevice != null ) {
if ( ! first ) {
sb.append ( ", " );
} else {
first = false;
}
sb.append ( "xPlaDevice = " + xPlaDevice );
}
if ( yPlaDevice != null ) {
if ( ! first ) {
sb.append ( ", " );
} else {
first = false;
}
sb.append ( "xPlaDevice = " + yPlaDevice );
}
if ( xAdvDevice != null ) {
if ( ! first ) {
sb.append ( ", " );
} else {
first = false;
}
sb.append ( "xAdvDevice = " + xAdvDevice );
}
if ( yAdvDevice != null ) {
if ( ! first ) {
sb.append ( ", " );
} else {
first = false;
}
sb.append ( "xAdvDevice = " + yAdvDevice );
}
sb.append(" }");
return sb.toString();
}
}
/**
* The <code>PairValues</code> class implements a pair value record, comprising a glyph id (or zero)
* and two optional positioning values.
*/
public static class PairValues {
private final int glyph; // glyph id (or 0)
private final Value value1; // value for first glyph in pair (or null)
private final Value value2; // value for second glyph in pair (or null)
/**
* Instantiate a PairValues.
* @param glyph the glyph id (or zero)
* @param value1 the value of the first glyph in pair (or null)
* @param value2 the value of the second glyph in pair (or null)
*/
public PairValues ( int glyph, Value value1, Value value2 ) {
assert glyph >= 0;
this.glyph = glyph;
this.value1 = value1;
this.value2 = value2;
}
/** @return the glyph id */
public int getGlyph() {
return glyph;
}
/** @return the first value */
public Value getValue1() {
return value1;
}
/** @return the second value */
public Value getValue2() {
return value2;
}
/** {@inheritDoc} */
public String toString() {
StringBuffer sb = new StringBuffer();
boolean first = true;
sb.append ( "{ " );
if ( glyph != 0 ) {
if ( ! first ) {
sb.append ( ", " );
} else {
first = false;
}
sb.append ( "glyph = " + glyph );
}
if ( value1 != null ) {
if ( ! first ) {
sb.append ( ", " );
} else {
first = false;
}
sb.append ( "value1 = " + value1 );
}
if ( value2 != null ) {
if ( ! first ) {
sb.append ( ", " );
} else {
first = false;
}
sb.append ( "value2 = " + value2 );
}
sb.append(" }");
return sb.toString();
}
}
/**
* The <code>Anchor</code> 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).
*/
public static class Anchor {
private final int x; // xCoordinate (in design units)
private final int y; // yCoordinate (in design units)
private final int anchorPoint; // anchor point index (or -1)
private final DeviceTable xDevice; // x device table
private final DeviceTable yDevice; // y device table
/**
* Instantiate an Anchor (format 1).
* @param x the x coordinate
* @param y the y coordinate
*/
public Anchor ( int x, int y ) {
this ( x, y, -1, null, null );
}
/**
* Instantiate an Anchor (format 2).
* @param x the x coordinate
* @param y the y coordinate
* @param anchorPoint anchor index (or -1)
*/
public Anchor ( int x, int y, int anchorPoint ) {
this ( x, y, anchorPoint, null, null );
}
/**
* Instantiate an Anchor (format 3).
* @param x the x coordinate
* @param y the y coordinate
* @param xDevice the x device table (or null if not present)
* @param yDevice the y device table (or null if not present)
*/
public Anchor ( int x, int y, DeviceTable xDevice, DeviceTable yDevice ) {
this ( x, y, -1, xDevice, yDevice );
}
/**
* Instantiate an Anchor based on an existing anchor.
* @param a the existing anchor
*/
protected Anchor ( Anchor a ) {
this ( a.x, a.y, a.anchorPoint, a.xDevice, a.yDevice );
}
private Anchor ( int x, int y, int anchorPoint, DeviceTable xDevice, DeviceTable yDevice ) {
assert ( anchorPoint >= 0 ) || ( anchorPoint == -1 );
this.x = x;
this.y = y;
this.anchorPoint = anchorPoint;
this.xDevice = xDevice;
this.yDevice = yDevice;
}
/** @return the x coordinate */
public int getX() {
return x;
}
/** @return the y coordinate */
public int getY() {
return y;
}
/** @return the anchor point index (or -1 if not specified) */
public int getAnchorPoint() {
return anchorPoint;
}
/** @return the x device table (or null if not specified) */
public DeviceTable getXDevice() {
return xDevice;
}
/** @return the y device table (or null if not specified) */
public DeviceTable getYDevice() {
return yDevice;
}
/**
* Obtain adjustment value required to align the specified anchor
* with this anchor.
* @param a the anchor to align
* @return the adjustment value needed to effect alignment
*/
public Value getAlignmentAdjustment ( Anchor a ) {
assert a != null;
// TODO - handle anchor point
// TODO - handle device tables
return new Value ( x - a.x, y - a.y, 0, 0, null, null, null, null );
}
/** {@inheritDoc} */
public String toString() {
StringBuffer sb = new StringBuffer();
sb.append ( "{ [" + x + "," + y + "]" );
if ( anchorPoint != -1 ) {
sb.append ( ", anchorPoint = " + anchorPoint );
}
if ( xDevice != null ) {
sb.append ( ", xDevice = " + xDevice );
}
if ( yDevice != null ) {
sb.append ( ", yDevice = " + yDevice );
}
sb.append(" }");
return sb.toString();
}
}
/**
* The <code>MarkAnchor</code> class is a subclass of the <code>Anchor</code> class, adding a mark
* class designation.
*/
public static class MarkAnchor extends Anchor {
private final int markClass; // mark class
/**
* Instantiate a MarkAnchor
* @param markClass the mark class
* @param a the underlying anchor (whose fields are copied)
*/
public MarkAnchor ( int markClass, Anchor a ) {
super ( a );
this.markClass = markClass;
}
/** @return the mark class */
public int getMarkClass() {
return markClass;
}
/** {@inheritDoc} */
public String toString() {
return "{ markClass = " + markClass + ", anchor = " + super.toString() + " }";
}
}
}