| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* $Id$ */ |
| |
| package org.apache.fop.complexscripts.fonts; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collections; |
| 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 |
| |
| /** |
| * <p>The <code>GlyphPositioningTable</code> class is a glyph table that implements |
| * <code>GlyphPositioning</code> functionality.</p> |
| * |
| * <p>This work was originally authored by Glenn Adams (gadams@apache.org).</p> |
| */ |
| public class GlyphPositioningTable extends GlyphTable { |
| |
| /** logging instance */ |
| private static final Log log = LogFactory.getLog(GlyphPositioningTable.class); |
| |
| /** 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, |
| Map<String, ScriptProcessor> processors) { |
| super(gdef, lookups, processors); |
| if ((subtables == null) || (subtables.size() == 0)) { |
| throw new AdvancedTypographicTableFormatException("subtables must be non-empty"); |
| } else { |
| for (Object o : subtables) { |
| 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, processors); |
| return sp.position(this, gs, script, language, fontSize, lookups, widths, adjustments); |
| } else { |
| return false; |
| } |
| } |
| |
| private abstract static class SingleSubtable extends GlyphPositioningSubtable { |
| SingleSubtable(String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries) { |
| super(id, sequence, flags, format, coverage); |
| } |
| /** {@inheritDoc} */ |
| public int getType() { |
| return GPOS_LOOKUP_TYPE_SINGLE; |
| } |
| /** {@inheritDoc} */ |
| public boolean isCompatible(GlyphSubtable subtable) { |
| return subtable instanceof SingleSubtable; |
| } |
| /** {@inheritDoc} */ |
| public boolean position(GlyphPositioningState ps) { |
| int gi = ps.getGlyph(); |
| int ci; |
| if ((ci = getCoverageIndex(gi)) < 0) { |
| return false; |
| } else { |
| Value v = getValue(ci, gi); |
| if (v != null) { |
| if (ps.adjust(v)) { |
| ps.setAdjusted(true); |
| } |
| ps.consume(1); |
| } |
| return true; |
| } |
| } |
| /** |
| * Obtain positioning value for coverage index. |
| * @param ci coverage index |
| * @param gi input glyph index |
| * @return positioning value or null if none applies |
| */ |
| public abstract Value getValue(int ci, int gi); |
| static GlyphPositioningSubtable create(String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries) { |
| if (format == 1) { |
| return new SingleSubtableFormat1(id, sequence, flags, format, coverage, entries); |
| } else if (format == 2) { |
| return new SingleSubtableFormat2(id, sequence, flags, format, coverage, entries); |
| } else { |
| throw new UnsupportedOperationException(); |
| } |
| } |
| } |
| |
| private static class SingleSubtableFormat1 extends SingleSubtable { |
| private Value value; |
| private int ciMax; |
| SingleSubtableFormat1(String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries) { |
| super(id, sequence, flags, format, coverage, entries); |
| populate(entries); |
| } |
| /** {@inheritDoc} */ |
| public List getEntries() { |
| if (value != null) { |
| List entries = new ArrayList(1); |
| entries.add(value); |
| return entries; |
| } else { |
| return null; |
| } |
| } |
| /** {@inheritDoc} */ |
| public Value getValue(int ci, int gi) { |
| if ((value != null) && (ci <= ciMax)) { |
| return value; |
| } else { |
| return null; |
| } |
| } |
| private void populate(List entries) { |
| if ((entries == null) || (entries.size() != 1)) { |
| throw new AdvancedTypographicTableFormatException("illegal entries, must be non-null and contain exactly one entry"); |
| } else { |
| Value v; |
| Object o = entries.get(0); |
| if (o instanceof Value) { |
| v = (Value) o; |
| } else { |
| throw new AdvancedTypographicTableFormatException("illegal entries entry, must be Value, but is: " + ((o != null) ? o.getClass() : null)); |
| } |
| assert this.value == null; |
| this.value = v; |
| this.ciMax = getCoverageSize() - 1; |
| } |
| } |
| } |
| |
| private static class SingleSubtableFormat2 extends SingleSubtable { |
| private Value[] values; |
| SingleSubtableFormat2(String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries) { |
| super(id, sequence, flags, format, coverage, entries); |
| populate(entries); |
| } |
| /** {@inheritDoc} */ |
| public List getEntries() { |
| if (values != null) { |
| List entries = new ArrayList(values.length); |
| Collections.addAll(entries, values); |
| return entries; |
| } else { |
| return null; |
| } |
| } |
| /** {@inheritDoc} */ |
| public Value getValue(int ci, int gi) { |
| if ((values != null) && (ci < values.length)) { |
| return values [ ci ]; |
| } else { |
| return null; |
| } |
| } |
| private void populate(List entries) { |
| if (entries == null) { |
| throw new AdvancedTypographicTableFormatException("illegal entries, must be non-null"); |
| } else if (entries.size() != 1) { |
| throw new AdvancedTypographicTableFormatException("illegal entries, " + entries.size() + " entries present, but requires 1 entry"); |
| } else { |
| Object o; |
| if (((o = entries.get(0)) == null) || !(o instanceof Value[])) { |
| throw new AdvancedTypographicTableFormatException("illegal entries, single entry must be a Value[], but is: " + ((o != null) ? o.getClass() : null)); |
| } else { |
| Value[] va = (Value[]) o; |
| if (va.length != getCoverageSize()) { |
| throw new AdvancedTypographicTableFormatException("illegal values array, " + entries.size() + " values present, but requires " + getCoverageSize() + " values"); |
| } else { |
| assert this.values == null; |
| this.values = va; |
| } |
| } |
| } |
| } |
| } |
| |
| private abstract static class PairSubtable extends GlyphPositioningSubtable { |
| PairSubtable(String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries) { |
| super(id, sequence, flags, format, coverage); |
| } |
| /** {@inheritDoc} */ |
| public int getType() { |
| return GPOS_LOOKUP_TYPE_PAIR; |
| } |
| /** {@inheritDoc} */ |
| public boolean isCompatible(GlyphSubtable subtable) { |
| return subtable instanceof PairSubtable; |
| } |
| /** {@inheritDoc} */ |
| public boolean position(GlyphPositioningState ps) { |
| boolean applied = false; |
| int gi = ps.getGlyph(0); |
| int ci; |
| if ((ci = getCoverageIndex(gi)) >= 0) { |
| int[] counts = ps.getGlyphsAvailable(0); |
| int nga = counts[0]; |
| if (nga > 1) { |
| int[] iga = ps.getGlyphs(0, 2, null, counts); |
| if ((iga != null) && (iga.length == 2)) { |
| PairValues pv = getPairValues(ci, iga[0], iga[1]); |
| if (pv != null) { |
| int offset = 0; |
| int offsetLast = counts[0] + counts[1]; |
| // skip any ignored glyphs prior to first non-ignored glyph |
| for ( ; offset < offsetLast; ++offset) { |
| if (!ps.isIgnoredGlyph(offset)) { |
| break; |
| } else { |
| ps.consume(1); |
| } |
| } |
| // adjust first non-ignored glyph if first value isn't null |
| Value v1 = pv.getValue1(); |
| if (v1 != null) { |
| if (ps.adjust(v1, offset)) { |
| ps.setAdjusted(true); |
| } |
| ps.consume(1); // consume first non-ignored glyph |
| ++offset; |
| } |
| // skip any ignored glyphs prior to second non-ignored glyph |
| for ( ; offset < offsetLast; ++offset) { |
| if (!ps.isIgnoredGlyph(offset)) { |
| break; |
| } else { |
| ps.consume(1); |
| } |
| } |
| // adjust second non-ignored glyph if second value isn't null |
| Value v2 = pv.getValue2(); |
| if (v2 != null) { |
| if (ps.adjust(v2, offset)) { |
| ps.setAdjusted(true); |
| } |
| ps.consume(1); // consume second non-ignored glyph |
| ++offset; |
| } |
| 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 (PairValues pv : pvt) { |
| 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(nc1); |
| entries.add(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); |
| } |
| 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); |
| } |
| if (((o = entries.get(4)) == null) || !(o instanceof PairValues[][])) { |
| throw new AdvancedTypographicTableFormatException("illegal entries, fifth entry must be a PairValues[][], but is: " + ((o != null) ? o.getClass() : null)); |
| } else { |
| pvm = (PairValues[][]) o; |
| } |
| } |
| } |
| } |
| |
| private abstract static class CursiveSubtable extends GlyphPositioningSubtable { |
| CursiveSubtable(String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries) { |
| super(id, sequence, flags, format, coverage); |
| } |
| /** {@inheritDoc} */ |
| public int getType() { |
| return GPOS_LOOKUP_TYPE_CURSIVE; |
| } |
| /** {@inheritDoc} */ |
| public boolean isCompatible(GlyphSubtable subtable) { |
| return subtable instanceof CursiveSubtable; |
| } |
| /** {@inheritDoc} */ |
| public boolean position(GlyphPositioningState ps) { |
| boolean applied = false; |
| int gi = ps.getGlyph(0); |
| int ci; |
| if ((ci = getCoverageIndex(gi)) >= 0) { |
| int[] counts = ps.getGlyphsAvailable(0); |
| int nga = counts[0]; |
| if (nga > 1) { |
| int[] iga = ps.getGlyphs(0, 2, null, counts); |
| if ((iga != null) && (iga.length == 2)) { |
| // int gi1 = gi; |
| int ci1 = ci; |
| int gi2 = iga [ 1 ]; |
| int ci2 = getCoverageIndex(gi2); |
| Anchor[] aa = getExitEntryAnchors(ci1, ci2); |
| if (aa != null) { |
| Anchor exa = aa [ 0 ]; |
| Anchor ena = aa [ 1 ]; |
| // int exw = ps.getWidth ( gi1 ); |
| int enw = ps.getWidth(gi2); |
| if ((exa != null) && (ena != null)) { |
| Value v = ena.getAlignmentAdjustment(exa); |
| v.adjust(-enw, 0, 0, 0); |
| if (ps.adjust(v)) { |
| ps.setAdjusted(true); |
| } |
| } |
| // consume only first glyph of exit/entry glyph pair |
| ps.consume(1); |
| applied = true; |
| } |
| } |
| } |
| } |
| return applied; |
| } |
| /** |
| * Obtain exit anchor for first glyph with coverage index <code>ci1</code> and entry anchor for second |
| * glyph with coverage index <code>ci2</code>. |
| * @param ci1 coverage index of first glyph (may be negative) |
| * @param ci2 coverage index of second glyph (may be negative) |
| * @return array of two anchors or null if either coverage index is negative or corresponding anchor is |
| * missing, where the first entry is the exit anchor of the first glyph and the second entry is the |
| * entry anchor of the second glyph |
| */ |
| public abstract Anchor[] getExitEntryAnchors(int ci1, int ci2); |
| static GlyphPositioningSubtable create(String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries) { |
| if (format == 1) { |
| return new CursiveSubtableFormat1(id, sequence, flags, format, coverage, entries); |
| } else { |
| throw new UnsupportedOperationException(); |
| } |
| } |
| } |
| |
| private static class CursiveSubtableFormat1 extends CursiveSubtable { |
| private Anchor[] aa; // anchor array, where even entries are entry anchors, and odd entries are exit anchors |
| CursiveSubtableFormat1(String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries) { |
| super(id, sequence, flags, format, coverage, entries); |
| populate(entries); |
| } |
| /** {@inheritDoc} */ |
| public List getEntries() { |
| if (aa != null) { |
| List entries = new ArrayList(1); |
| entries.add(aa); |
| return entries; |
| } else { |
| return null; |
| } |
| } |
| /** {@inheritDoc} */ |
| public Anchor[] getExitEntryAnchors(int ci1, int ci2) { |
| if ((ci1 >= 0) && (ci2 >= 0)) { |
| int ai1 = (ci1 * 2) + 1; // ci1 denotes glyph with exit anchor |
| int ai2 = (ci2 * 2) + 0; // ci2 denotes glyph with entry anchor |
| if ((aa != null) && (ai1 < aa.length) && (ai2 < aa.length)) { |
| Anchor exa = aa [ ai1 ]; |
| Anchor ena = aa [ ai2 ]; |
| if ((exa != null) && (ena != null)) { |
| return new Anchor[] { exa, ena }; |
| } |
| } |
| } |
| return null; |
| } |
| private void populate(List entries) { |
| if (entries == null) { |
| throw new AdvancedTypographicTableFormatException("illegal entries, must be non-null"); |
| } else if (entries.size() != 1) { |
| throw new AdvancedTypographicTableFormatException("illegal entries, " + entries.size() + " entries present, but requires 1 entry"); |
| } else { |
| Object o; |
| if (((o = entries.get(0)) == null) || !(o instanceof Anchor[])) { |
| throw new AdvancedTypographicTableFormatException("illegal entries, first (and only) entry must be a Anchor[], but is: " + ((o != null) ? o.getClass() : null)); |
| } else if ((((Anchor[]) o) .length % 2) != 0) { |
| throw new AdvancedTypographicTableFormatException("illegal entries, Anchor[] array must have an even number of entries, but has: " + ((Anchor[]) o) .length); |
| } else { |
| aa = (Anchor[]) o; |
| } |
| } |
| } |
| } |
| |
| private abstract static class MarkToBaseSubtable extends GlyphPositioningSubtable { |
| MarkToBaseSubtable(String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries) { |
| super(id, sequence, flags, format, coverage); |
| } |
| /** {@inheritDoc} */ |
| public int getType() { |
| return GPOS_LOOKUP_TYPE_MARK_TO_BASE; |
| } |
| /** {@inheritDoc} */ |
| public boolean isCompatible(GlyphSubtable subtable) { |
| return subtable instanceof MarkToBaseSubtable; |
| } |
| /** {@inheritDoc} */ |
| public boolean position(GlyphPositioningState ps) { |
| boolean applied = false; |
| int giMark = ps.getGlyph(); |
| int ciMark; |
| if ((ciMark = getCoverageIndex(giMark)) >= 0) { |
| MarkAnchor ma = getMarkAnchor(ciMark, giMark); |
| if (ma != null) { |
| for (int i = 0, n = ps.getPosition(); i < n; i++) { |
| int gi = ps.getGlyph(-(i + 1)); |
| int unprocessedGlyph = ps.getUnprocessedGlyph(-(i + 1)); |
| if (ps.isMark(gi) && ps.isMark(unprocessedGlyph)) { |
| 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 (OTFScript.KHMER.equals(ps.script)) { |
| v.adjust(-ps.getWidth(gi), -v.yPlacement, 0, 0); |
| } |
| 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(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); |
| } |
| if (((o = entries.get(2)) == null) || !(o instanceof MarkAnchor[])) { |
| throw new AdvancedTypographicTableFormatException("illegal entries, third entry must be a MarkAnchor[], but is: " + ((o != null) ? o.getClass() : null)); |
| } else { |
| maa = (MarkAnchor[]) o; |
| } |
| if (((o = entries.get(3)) == null) || !(o instanceof Anchor[][])) { |
| throw new AdvancedTypographicTableFormatException("illegal entries, fourth entry must be a Anchor[][], but is: " + ((o != null) ? o.getClass() : null)); |
| } else { |
| bam = (Anchor[][]) o; |
| } |
| } |
| } |
| } |
| |
| private abstract static class MarkToLigatureSubtable extends GlyphPositioningSubtable { |
| MarkToLigatureSubtable(String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries) { |
| super(id, sequence, flags, format, coverage); |
| } |
| /** {@inheritDoc} */ |
| public int getType() { |
| return GPOS_LOOKUP_TYPE_MARK_TO_LIGATURE; |
| } |
| /** {@inheritDoc} */ |
| public boolean isCompatible(GlyphSubtable subtable) { |
| return subtable instanceof MarkToLigatureSubtable; |
| } |
| /** {@inheritDoc} */ |
| public boolean position(GlyphPositioningState ps) { |
| boolean applied = false; |
| int giMark = ps.getGlyph(); |
| int ciMark; |
| if ((ciMark = getCoverageIndex(giMark)) >= 0) { |
| MarkAnchor ma = getMarkAnchor(ciMark, giMark); |
| int mxc = getMaxComponentCount(); |
| if (ma != null) { |
| for (int i = 0, n = ps.getPosition(); i < n; i++) { |
| int glyphIndex = ps.getUnprocessedGlyph(-(i + 1)); |
| if (ps.isMark(glyphIndex)) { |
| continue; |
| } else { |
| Anchor anchor = getLigatureAnchor(glyphIndex, mxc, i, ma.getMarkClass()); |
| if (anchor != null) { |
| if (ps.adjust(anchor.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(nmc); |
| entries.add(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); |
| } |
| 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); |
| } |
| if (((o = entries.get(3)) == null) || !(o instanceof MarkAnchor[])) { |
| throw new AdvancedTypographicTableFormatException("illegal entries, fourth entry must be a MarkAnchor[], but is: " + ((o != null) ? o.getClass() : null)); |
| } else { |
| maa = (MarkAnchor[]) o; |
| } |
| if (((o = entries.get(4)) == null) || !(o instanceof Anchor[][][])) { |
| throw new AdvancedTypographicTableFormatException("illegal entries, fifth entry must be a Anchor[][][], but is: " + ((o != null) ? o.getClass() : null)); |
| } else { |
| lam = (Anchor[][][]) o; |
| } |
| } |
| } |
| } |
| |
| private abstract static class MarkToMarkSubtable extends GlyphPositioningSubtable { |
| MarkToMarkSubtable(String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries) { |
| super(id, sequence, flags, format, coverage); |
| } |
| /** {@inheritDoc} */ |
| public int getType() { |
| return GPOS_LOOKUP_TYPE_MARK_TO_MARK; |
| } |
| /** {@inheritDoc} */ |
| public boolean isCompatible(GlyphSubtable subtable) { |
| return subtable instanceof MarkToMarkSubtable; |
| } |
| /** {@inheritDoc} */ |
| public boolean position(GlyphPositioningState ps) { |
| boolean applied = false; |
| int giMark1 = ps.getGlyph(); |
| int ciMark1; |
| if ((ciMark1 = getCoverageIndex(giMark1)) >= 0) { |
| MarkAnchor ma = getMark1Anchor(ciMark1, giMark1); |
| if (ma != null) { |
| if (ps.hasPrev()) { |
| Anchor anchor = getMark2Anchor(ps.getUnprocessedGlyph(-1), ma.getMarkClass()); |
| if (anchor != null) { |
| if (ps.adjust(anchor.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(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); |
| } |
| if (((o = entries.get(2)) == null) || !(o instanceof MarkAnchor[])) { |
| throw new AdvancedTypographicTableFormatException("illegal entries, third entry must be a MarkAnchor[], but is: " + ((o != null) ? o.getClass() : null)); |
| } else { |
| maa = (MarkAnchor[]) o; |
| } |
| if (((o = entries.get(3)) == null) || !(o instanceof Anchor[][])) { |
| throw new AdvancedTypographicTableFormatException("illegal entries, fourth entry must be a Anchor[][], but is: " + ((o != null) ? o.getClass() : null)); |
| } else { |
| mam = (Anchor[][]) o; |
| } |
| } |
| } |
| } |
| |
| private abstract static class ContextualSubtable extends GlyphPositioningSubtable { |
| ContextualSubtable(String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries) { |
| super(id, sequence, flags, format, coverage); |
| } |
| /** {@inheritDoc} */ |
| public int getType() { |
| return GPOS_LOOKUP_TYPE_CONTEXTUAL; |
| } |
| /** {@inheritDoc} */ |
| public boolean isCompatible(GlyphSubtable subtable) { |
| return subtable instanceof ContextualSubtable; |
| } |
| /** {@inheritDoc} */ |
| public boolean position(GlyphPositioningState ps) { |
| boolean applied = false; |
| int gi = ps.getGlyph(); |
| int ci; |
| if ((ci = getCoverageIndex(gi)) >= 0) { |
| int[] rv = new int[1]; |
| RuleLookup[] la = getLookups(ci, gi, ps, rv); |
| if (la != null) { |
| ps.apply(la, rv[0]); |
| applied = true; |
| } |
| } |
| return applied; |
| } |
| /** |
| * Obtain rule lookups set associated current input glyph context. |
| * @param ci coverage index of glyph at current position |
| * @param gi glyph index of glyph at current position |
| * @param ps glyph positioning state |
| * @param rv array of ints used to receive multiple return values, must be of length 1 or greater, |
| * where the first entry is used to return the input sequence length of the matched rule |
| * @return array of rule lookups or null if none applies |
| */ |
| public abstract RuleLookup[] getLookups(int ci, int gi, GlyphPositioningState ps, int[] rv); |
| static GlyphPositioningSubtable create(String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries) { |
| if (format == 1) { |
| return new ContextualSubtableFormat1(id, sequence, flags, format, coverage, entries); |
| } else if (format == 2) { |
| return new ContextualSubtableFormat2(id, sequence, flags, format, coverage, entries); |
| } else if (format == 3) { |
| return new ContextualSubtableFormat3(id, sequence, flags, format, coverage, entries); |
| } else { |
| throw new UnsupportedOperationException(); |
| } |
| } |
| } |
| |
| private static class ContextualSubtableFormat1 extends ContextualSubtable { |
| private RuleSet[] rsa; // rule set array, ordered by glyph coverage index |
| ContextualSubtableFormat1(String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries) { |
| super(id, sequence, flags, format, coverage, entries); |
| populate(entries); |
| } |
| /** {@inheritDoc} */ |
| public List getEntries() { |
| if (rsa != null) { |
| List entries = new ArrayList(1); |
| entries.add(rsa); |
| return entries; |
| } else { |
| return null; |
| } |
| } |
| /** {@inheritDoc} */ |
| public void resolveLookupReferences(Map<String, LookupTable> lookupTables) { |
| GlyphTable.resolveLookupReferences(rsa, lookupTables); |
| } |
| /** {@inheritDoc} */ |
| public RuleLookup[] getLookups(int ci, int gi, GlyphPositioningState ps, int[] rv) { |
| assert ps != null; |
| assert (rv != null) && (rv.length > 0); |
| assert rsa != null; |
| if (rsa.length > 0) { |
| RuleSet rs = rsa [ 0 ]; |
| if (rs != null) { |
| Rule[] ra = rs.getRules(); |
| for (Rule r : ra) { |
| 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(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 (Rule r : ra) { |
| 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); |
| } |
| 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 (Rule r : ra) { |
| if ((r != null) && (r instanceof ChainedCoverageSequenceRule)) { |
| ChainedCoverageSequenceRule cr = (ChainedCoverageSequenceRule) r; |
| GlyphCoverageTable[] gca = cr.getCoverages(); |
| if (matches(ps, gca, 0, rv)) { |
| return r.getLookups(); |
| } |
| } |
| } |
| } |
| } |
| return null; |
| } |
| static boolean matches(GlyphPositioningState ps, GlyphCoverageTable[] gca, int offset, int[] rv) { |
| if ((gca == null) || (gca.length == 0)) { |
| return true; // match null or empty coverage array |
| } else { |
| boolean reverse = offset < 0; |
| GlyphTester ignores = ps.getIgnoreDefault(); |
| int[] counts = ps.getGlyphsAvailable(offset, reverse, ignores); |
| int nga = counts[0]; |
| int ngm = gca.length; |
| if (nga < ngm) { |
| return false; // insufficient glyphs available to match |
| } else { |
| int[] ga = ps.getGlyphs(offset, ngm, reverse, ignores, null, counts); |
| for (int k = 0; k < ngm; k++) { |
| GlyphCoverageTable ct = gca [ k ]; |
| if (ct != null) { |
| if (ct.getCoverageIndex(ga [ k ]) < 0) { |
| return false; // match fails at ga [ k ] |
| } |
| } |
| } |
| if (rv != null) { |
| rv[0] = counts[0] + counts[1]; |
| } |
| return true; // all glyphs match |
| } |
| } |
| } |
| private void populate(List entries) { |
| if (entries == null) { |
| throw new AdvancedTypographicTableFormatException("illegal entries, must be non-null"); |
| } else if (entries.size() != 1) { |
| throw new AdvancedTypographicTableFormatException("illegal entries, " + entries.size() + " entries present, but requires 1 entry"); |
| } else { |
| Object o; |
| if (((o = entries.get(0)) == null) || !(o instanceof RuleSet[])) { |
| throw new AdvancedTypographicTableFormatException("illegal entries, first entry must be an RuleSet[], but is: " + ((o != null) ? o.getClass() : null)); |
| } else { |
| rsa = (RuleSet[]) o; |
| } |
| } |
| } |
| } |
| |
| private abstract static class ChainedContextualSubtable extends GlyphPositioningSubtable { |
| ChainedContextualSubtable(String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries) { |
| super(id, sequence, flags, format, coverage); |
| } |
| /** {@inheritDoc} */ |
| public int getType() { |
| return GPOS_LOOKUP_TYPE_CHAINED_CONTEXTUAL; |
| } |
| /** {@inheritDoc} */ |
| public boolean isCompatible(GlyphSubtable subtable) { |
| return subtable instanceof ChainedContextualSubtable; |
| } |
| /** {@inheritDoc} */ |
| public boolean position(GlyphPositioningState ps) { |
| boolean applied = false; |
| int gi = ps.getGlyph(); |
| int ci; |
| if ((ci = getCoverageIndex(gi)) >= 0) { |
| int[] rv = new int[1]; |
| RuleLookup[] la = getLookups(ci, gi, ps, rv); |
| if (la != null) { |
| ps.apply(la, rv[0]); |
| applied = true; |
| } |
| } |
| return applied; |
| } |
| /** |
| * Obtain rule lookups set associated current input glyph context. |
| * @param ci coverage index of glyph at current position |
| * @param gi glyph index of glyph at current position |
| * @param ps glyph positioning state |
| * @param rv array of ints used to receive multiple return values, must be of length 1 or greater, |
| * where the first entry is used to return the input sequence length of the matched rule |
| * @return array of rule lookups or null if none applies |
| */ |
| public abstract RuleLookup[] getLookups(int ci, int gi, GlyphPositioningState ps, int[] rv); |
| static GlyphPositioningSubtable create(String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries) { |
| if (format == 1) { |
| return new ChainedContextualSubtableFormat1(id, sequence, flags, format, coverage, entries); |
| } else if (format == 2) { |
| return new ChainedContextualSubtableFormat2(id, sequence, flags, format, coverage, entries); |
| } else if (format == 3) { |
| return new ChainedContextualSubtableFormat3(id, sequence, flags, format, coverage, entries); |
| } else { |
| throw new UnsupportedOperationException(); |
| } |
| } |
| } |
| |
| private static class ChainedContextualSubtableFormat1 extends ChainedContextualSubtable { |
| private RuleSet[] rsa; // rule set array, ordered by glyph coverage index |
| ChainedContextualSubtableFormat1(String id, int sequence, int flags, int format, GlyphCoverageTable coverage, List entries) { |
| super(id, sequence, flags, format, coverage, entries); |
| populate(entries); |
| } |
| /** {@inheritDoc} */ |
| public List getEntries() { |
| if (rsa != null) { |
| List entries = new ArrayList(1); |
| entries.add(rsa); |
| return entries; |
| } else { |
| return null; |
| } |
| } |
| /** {@inheritDoc} */ |
| public void resolveLookupReferences(Map<String, LookupTable> lookupTables) { |
| GlyphTable.resolveLookupReferences(rsa, lookupTables); |
| } |
| /** {@inheritDoc} */ |
| public RuleLookup[] getLookups(int ci, int gi, GlyphPositioningState ps, int[] rv) { |
| assert ps != null; |
| assert (rv != null) && (rv.length > 0); |
| assert rsa != null; |
| if (rsa.length > 0) { |
| RuleSet rs = rsa [ 0 ]; |
| if (rs != null) { |
| Rule[] ra = rs.getRules(); |
| for (Rule r : ra) { |
| 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(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 (Rule r : ra) { |
| 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); |
| } |
| 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 (Rule r : ra) { |
| 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 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. asf.todo at present, assumes that 1 device unit equals one point |
| * @param fontSize the font size to search for |
| * @return an adjustment if font size matches an entry |
| */ |
| public int findAdjustment(int fontSize) { |
| // [TODO] at present, assumes that 1 device unit equals one point |
| int fs = fontSize / 1000; |
| if (fs < startSize) { |
| return 0; |
| } else if (fs <= endSize) { |
| return deltas [ fs - startSize ] * 1000; |
| } else { |
| return 0; |
| } |
| } |
| |
| /** {@inheritDoc} */ |
| public String toString() { |
| return "{ start = " + startSize + ", end = " + endSize + ", deltas = " + Arrays.toString(deltas) + "}"; |
| } |
| |
| } |
| |
| /** |
| * The <code>Value</code> class implements a positioning value record, comprising placement |
| * and advancement information in X and Y axes, and optionally including device data used to |
| * perform device (grid-fitted) specific fine grain adjustments. |
| */ |
| public static class Value { |
| |
| /** X_PLACEMENT value format flag */ |
| public static final int X_PLACEMENT = 0x0001; |
| /** Y_PLACEMENT value format flag */ |
| public static final int Y_PLACEMENT = 0x0002; |
| /** X_ADVANCE value format flag */ |
| public static final int X_ADVANCE = 0x0004; |
| /** Y_ADVANCE value format flag */ |
| public static final int Y_ADVANCE = 0x0008; |
| /** X_PLACEMENT_DEVICE value format flag */ |
| public static final int X_PLACEMENT_DEVICE = 0x0010; |
| /** Y_PLACEMENT_DEVICE value format flag */ |
| public static final int Y_PLACEMENT_DEVICE = 0x0020; |
| /** X_ADVANCE_DEVICE value format flag */ |
| public static final int X_ADVANCE_DEVICE = 0x0040; |
| /** Y_ADVANCE_DEVICE value format flag */ |
| public static final int Y_ADVANCE_DEVICE = 0x0080; |
| |
| /** X_PLACEMENT value index (within adjustments arrays) */ |
| public static final int IDX_X_PLACEMENT = 0; |
| /** Y_PLACEMENT value index (within adjustments arrays) */ |
| public static final int IDX_Y_PLACEMENT = 1; |
| /** X_ADVANCE value index (within adjustments arrays) */ |
| public static final int IDX_X_ADVANCE = 2; |
| /** Y_ADVANCE value index (within adjustments arrays) */ |
| public static final int IDX_Y_ADVANCE = 3; |
| |
| private int xPlacement; // x placement |
| private int yPlacement; // y placement |
| private int xAdvance; // x advance |
| private int yAdvance; // y advance |
| private final DeviceTable xPlaDevice; // x placement device table |
| private final DeviceTable yPlaDevice; // y placement device table |
| private final DeviceTable xAdvDevice; // x advance device table |
| private final DeviceTable yAdvDevice; // x advance device table |
| |
| /** |
| * Instantiate a Value. |
| * @param xPlacement the x placement or zero |
| * @param yPlacement the y placement or zero |
| * @param xAdvance the x advance or zero |
| * @param yAdvance the y advance or zero |
| * @param xPlaDevice the x placement device table or null |
| * @param yPlaDevice the y placement device table or null |
| * @param xAdvDevice the x advance device table or null |
| * @param yAdvDevice the y advance device table or null |
| */ |
| public Value(int xPlacement, int yPlacement, int xAdvance, int yAdvance, DeviceTable xPlaDevice, DeviceTable yPlaDevice, DeviceTable xAdvDevice, DeviceTable yAdvDevice) { |
| this.xPlacement = xPlacement; |
| this.yPlacement = yPlacement; |
| this.xAdvance = xAdvance; |
| this.yAdvance = yAdvance; |
| this.xPlaDevice = xPlaDevice; |
| this.yPlaDevice = yPlaDevice; |
| this.xAdvDevice = xAdvDevice; |
| this.yAdvDevice = yAdvDevice; |
| } |
| |
| /** @return the x placement */ |
| public int getXPlacement() { |
| return xPlacement; |
| } |
| |
| /** @return the y placement */ |
| public int getYPlacement() { |
| return yPlacement; |
| } |
| |
| /** @return the x advance */ |
| public int getXAdvance() { |
| return xAdvance; |
| } |
| |
| /** @return the y advance */ |
| public int getYAdvance() { |
| return yAdvance; |
| } |
| |
| /** @return the x placement device table */ |
| public DeviceTable getXPlaDevice() { |
| return xPlaDevice; |
| } |
| |
| /** @return the y placement device table */ |
| public DeviceTable getYPlaDevice() { |
| return yPlaDevice; |
| } |
| |
| /** @return the x advance device table */ |
| public DeviceTable getXAdvDevice() { |
| return xAdvDevice; |
| } |
| |
| /** @return the y advance device table */ |
| public DeviceTable getYAdvDevice() { |
| return yAdvDevice; |
| } |
| |
| /** |
| * Apply value to specific adjustments to without use of device table adjustments. |
| * @param xPlacement the x placement or zero |
| * @param yPlacement the y placement or zero |
| * @param xAdvance the x advance or zero |
| * @param yAdvance the y advance or zero |
| */ |
| public void adjust(int xPlacement, int yPlacement, int xAdvance, int yAdvance) { |
| this.xPlacement += xPlacement; |
| this.yPlacement += yPlacement; |
| this.xAdvance += xAdvance; |
| this.yAdvance += yAdvance; |
| } |
| |
| /** |
| * Apply value to adjustments using font size for device table adjustments. |
| * @param adjustments array of four integers containing X,Y placement and X,Y advance adjustments |
| * @param fontSize font size for device table adjustments |
| * @return true if some adjustment was made |
| */ |
| public boolean adjust(int[] adjustments, int fontSize) { |
| boolean adjust = false; |
| int dv; |
| if ((dv = xPlacement) != 0) { |
| adjustments [ IDX_X_PLACEMENT ] += dv; |
| adjust = true; |
| } |
| if ((dv = yPlacement) != 0) { |
| adjustments [ IDX_Y_PLACEMENT ] += dv; |
| adjust = true; |
| } |
| if ((dv = xAdvance) != 0) { |
| adjustments [ IDX_X_ADVANCE ] += dv; |
| adjust = true; |
| } |
| if ((dv = yAdvance) != 0) { |
| adjustments [ IDX_Y_ADVANCE ] += dv; |
| adjust = true; |
| } |
| if (fontSize != 0) { |
| DeviceTable dt; |
| if ((dt = xPlaDevice) != null) { |
| if ((dv = dt.findAdjustment(fontSize)) != 0) { |
| adjustments [ IDX_X_PLACEMENT ] += dv; |
| adjust = true; |
| } |
| } |
| if ((dt = yPlaDevice) != null) { |
| if ((dv = dt.findAdjustment(fontSize)) != 0) { |
| adjustments [ IDX_Y_PLACEMENT ] += dv; |
| adjust = true; |
| } |
| } |
| if ((dt = xAdvDevice) != null) { |
| if ((dv = dt.findAdjustment(fontSize)) != 0) { |
| adjustments [ IDX_X_ADVANCE ] += dv; |
| adjust = true; |
| } |
| } |
| if ((dt = yAdvDevice) != null) { |
| if ((dv = dt.findAdjustment(fontSize)) != 0) { |
| adjustments [ IDX_Y_ADVANCE ] += dv; |
| adjust = true; |
| } |
| } |
| } |
| return adjust; |
| } |
| |
| /** {@inheritDoc} */ |
| public String toString() { |
| StringBuffer sb = new StringBuffer(); |
| boolean first = true; |
| sb.append("{ "); |
| if (xPlacement != 0) { |
| if (!first) { |
| sb.append(", "); |
| } else { |
| first = false; |
| } |
| sb.append("xPlacement = " + xPlacement); |
| } |
| if (yPlacement != 0) { |
| if (!first) { |
| sb.append(", "); |
| } else { |
| first = false; |
| } |
| sb.append("yPlacement = " + yPlacement); |
| } |
| if (xAdvance != 0) { |
| if (!first) { |
| sb.append(", "); |
| } else { |
| first = false; |
| } |
| sb.append("xAdvance = " + xAdvance); |
| } |
| if (yAdvance != 0) { |
| if (!first) { |
| sb.append(", "); |
| } else { |
| first = false; |
| } |
| sb.append("yAdvance = " + yAdvance); |
| } |
| if (xPlaDevice != null) { |
| if (!first) { |
| sb.append(", "); |
| } else { |
| first = false; |
| } |
| sb.append("xPlaDevice = " + xPlaDevice); |
| } |
| if (yPlaDevice != null) { |
| if (!first) { |
| sb.append(", "); |
| } else { |
| first = false; |
| } |
| sb.append("xPlaDevice = " + yPlaDevice); |
| } |
| if (xAdvDevice != null) { |
| if (!first) { |
| sb.append(", "); |
| } else { |
| first = false; |
| } |
| sb.append("xAdvDevice = " + xAdvDevice); |
| } |
| if (yAdvDevice != null) { |
| if (!first) { |
| sb.append(", "); |
| } else { |
| first = false; |
| } |
| sb.append("xAdvDevice = " + yAdvDevice); |
| } |
| sb.append(" }"); |
| return sb.toString(); |
| } |
| |
| } |
| |
| /** |
| * The <code>PairValues</code> class implements a pair value record, comprising a glyph id (or zero) |
| * and two optional positioning values. |
| */ |
| public static class PairValues { |
| |
| private final int glyph; // glyph id (or 0) |
| private final Value value1; // value for first glyph in pair (or null) |
| private final Value value2; // value for second glyph in pair (or null) |
| |
| /** |
| * Instantiate a PairValues. |
| * @param glyph the glyph id (or zero) |
| * @param value1 the value of the first glyph in pair (or null) |
| * @param value2 the value of the second glyph in pair (or null) |
| */ |
| public PairValues(int glyph, Value value1, Value value2) { |
| assert glyph >= 0; |
| this.glyph = glyph; |
| this.value1 = value1; |
| this.value2 = value2; |
| } |
| |
| /** @return the glyph id */ |
| public int getGlyph() { |
| return glyph; |
| } |
| |
| /** @return the first value */ |
| public Value getValue1() { |
| return value1; |
| } |
| |
| /** @return the second value */ |
| public Value getValue2() { |
| return value2; |
| } |
| |
| /** {@inheritDoc} */ |
| public String toString() { |
| StringBuffer sb = new StringBuffer(); |
| boolean first = true; |
| sb.append("{ "); |
| if (glyph != 0) { |
| if (!first) { |
| sb.append(", "); |
| } else { |
| first = false; |
| } |
| sb.append("glyph = " + glyph); |
| } |
| if (value1 != null) { |
| if (!first) { |
| sb.append(", "); |
| } else { |
| first = false; |
| } |
| sb.append("value1 = " + value1); |
| } |
| if (value2 != null) { |
| if (!first) { |
| sb.append(", "); |
| } else { |
| first = false; |
| } |
| sb.append("value2 = " + value2); |
| } |
| sb.append(" }"); |
| return sb.toString(); |
| } |
| |
| } |
| |
| /** |
| * The <code>Anchor</code> class implements a anchor record, comprising an X,Y coordinate pair, |
| * an optional anchor point index (or -1), and optional X or Y device tables (or null if absent). |
| */ |
| public static class Anchor { |
| |
| private final int x; // xCoordinate (in design units) |
| private final int y; // yCoordinate (in design units) |
| private final int anchorPoint; // anchor point index (or -1) |
| private final DeviceTable xDevice; // x device table |
| private final DeviceTable yDevice; // y device table |
| |
| /** |
| * Instantiate an Anchor (format 1). |
| * @param x the x coordinate |
| * @param y the y coordinate |
| */ |
| public Anchor(int x, int y) { |
| this (x, y, -1, null, null); |
| } |
| |
| /** |
| * Instantiate an Anchor (format 2). |
| * @param x the x coordinate |
| * @param y the y coordinate |
| * @param anchorPoint anchor index (or -1) |
| */ |
| public Anchor(int x, int y, int anchorPoint) { |
| this (x, y, anchorPoint, null, null); |
| } |
| |
| /** |
| * Instantiate an Anchor (format 3). |
| * @param x the x coordinate |
| * @param y the y coordinate |
| * @param xDevice the x device table (or null if not present) |
| * @param yDevice the y device table (or null if not present) |
| */ |
| public Anchor(int x, int y, DeviceTable xDevice, DeviceTable yDevice) { |
| this (x, y, -1, xDevice, yDevice); |
| } |
| |
| /** |
| * Instantiate an Anchor based on an existing anchor. |
| * @param a the existing anchor |
| */ |
| protected Anchor(Anchor a) { |
| this (a.x, a.y, a.anchorPoint, a.xDevice, a.yDevice); |
| } |
| |
| private Anchor(int x, int y, int anchorPoint, DeviceTable xDevice, DeviceTable yDevice) { |
| assert (anchorPoint >= 0) || (anchorPoint == -1); |
| this.x = x; |
| this.y = y; |
| this.anchorPoint = anchorPoint; |
| this.xDevice = xDevice; |
| this.yDevice = yDevice; |
| } |
| |
| /** @return the x coordinate */ |
| public int getX() { |
| return x; |
| } |
| |
| /** @return the y coordinate */ |
| public int getY() { |
| return y; |
| } |
| |
| /** @return the anchor point index (or -1 if not specified) */ |
| public int getAnchorPoint() { |
| return anchorPoint; |
| } |
| |
| /** @return the x device table (or null if not specified) */ |
| public DeviceTable getXDevice() { |
| return xDevice; |
| } |
| |
| /** @return the y device table (or null if not specified) */ |
| public DeviceTable getYDevice() { |
| return yDevice; |
| } |
| |
| /** |
| * Obtain adjustment value required to align the specified anchor |
| * with this anchor. |
| * @param a the anchor to align |
| * @return the adjustment value needed to effect alignment |
| */ |
| public Value getAlignmentAdjustment(Anchor a) { |
| assert a != null; |
| // TODO - handle anchor point |
| // TODO - handle device tables |
| return new Value(x - a.x, y - a.y, 0, 0, null, null, null, null); |
| } |
| |
| /** {@inheritDoc} */ |
| public String toString() { |
| StringBuffer sb = new StringBuffer(); |
| sb.append("{ [" + x + "," + y + "]"); |
| if (anchorPoint != -1) { |
| sb.append(", anchorPoint = " + anchorPoint); |
| } |
| if (xDevice != null) { |
| sb.append(", xDevice = " + xDevice); |
| } |
| if (yDevice != null) { |
| sb.append(", yDevice = " + yDevice); |
| } |
| sb.append(" }"); |
| return sb.toString(); |
| } |
| |
| } |
| |
| /** |
| * The <code>MarkAnchor</code> class is a subclass of the <code>Anchor</code> class, adding a mark |
| * class designation. |
| */ |
| public static class MarkAnchor extends Anchor { |
| |
| private final int markClass; // mark class |
| |
| /** |
| * Instantiate a MarkAnchor |
| * @param markClass the mark class |
| * @param a the underlying anchor (whose fields are copied) |
| */ |
| public MarkAnchor(int markClass, Anchor a) { |
| super(a); |
| this.markClass = markClass; |
| } |
| |
| /** @return the mark class */ |
| public int getMarkClass() { |
| return markClass; |
| } |
| |
| /** {@inheritDoc} */ |
| public String toString() { |
| return "{ markClass = " + markClass + ", anchor = " + super.toString() + " }"; |
| } |
| |
| } |
| |
| } |
