| /* |
| * 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.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; |
| |
| // 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) */ |
| 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() + " }"; |
| } |
| |
| } |
| |
| } |