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Posted to fop-commits@xmlgraphics.apache.org by ga...@apache.org on 2012/02/26 03:29:29 UTC
svn commit: r1293736 [7/38] - in /xmlgraphics/fop/trunk: ./
src/codegen/java/org/apache/fop/tools/
src/codegen/unicode/java/org/apache/fop/complexscripts/
src/codegen/unicode/java/org/apache/fop/complexscripts/bidi/
src/documentation/content/xdocs/trun...
Added: xmlgraphics/fop/trunk/src/java/org/apache/fop/complexscripts/fonts/GlyphPositioningTable.java
URL: http://svn.apache.org/viewvc/xmlgraphics/fop/trunk/src/java/org/apache/fop/complexscripts/fonts/GlyphPositioningTable.java?rev=1293736&view=auto
==============================================================================
--- xmlgraphics/fop/trunk/src/java/org/apache/fop/complexscripts/fonts/GlyphPositioningTable.java (added)
+++ xmlgraphics/fop/trunk/src/java/org/apache/fop/complexscripts/fonts/GlyphPositioningTable.java Sun Feb 26 02:29:01 2012
@@ -0,0 +1,2264 @@
+/*
+ * 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.Arrays;
+import java.util.ArrayList;
+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
+
+/**
+ * The <code>GlyphPositioningTable</code> class is a glyph table that implements
+ * <code>GlyphPositioning</code> functionality.
+ * @author Glenn Adams
+ */
+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(), 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), 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), 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(), 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(), 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(), 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(), 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(), 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
+ * @asf.todo at present, assumes that 1 device unit equals one point
+ */
+ public int findAdjustment ( int fontSize ) {
+ 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) */
[... 438 lines stripped ...]
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