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158 changes: 158 additions & 0 deletions
158
src/main/java/org/apache/fop/complexscripts/scripts/DefaultScriptProcessor.java
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| Original file line number | Diff line number | Diff line change |
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| /* | ||
| * 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. | ||
| */ | ||
|
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| /* $Id$ */ | ||
|
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| package org.apache.fop.complexscripts.scripts; | ||
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| import org.apache.fop.complexscripts.fonts.GlyphDefinitionTable; | ||
| import org.apache.fop.complexscripts.util.CharAssociation; | ||
| import org.apache.fop.complexscripts.util.GlyphSequence; | ||
| import org.apache.fop.complexscripts.util.ScriptContextTester; | ||
|
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| // CSOFF: LineLengthCheck | ||
|
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| /** | ||
| * <p>Default script processor, which enables default glyph composition/decomposition, common ligatures, localized forms | ||
| * and kerning.</p> | ||
| * | ||
| * <p>This work was originally authored by Glenn Adams (gadams@apache.org).</p> | ||
| */ | ||
| public class DefaultScriptProcessor extends ScriptProcessor { | ||
|
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| /** features to use for substitutions */ | ||
| private static final String[] GSUB_FEATURES = | ||
| { | ||
| "ccmp", // glyph composition/decomposition | ||
| "liga", // common ligatures | ||
| "locl" // localized forms | ||
| }; | ||
|
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| /** features to use for positioning */ | ||
| private static final String[] GPOS_FEATURES = | ||
| { | ||
| "kern", // kerning | ||
| "mark", // mark to base or ligature positioning | ||
| "mkmk" // mark to mark positioning | ||
| }; | ||
|
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| DefaultScriptProcessor(String script) { | ||
| super(script); | ||
| } | ||
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| @Override | ||
| /** {@inheritDoc} */ | ||
| public String[] getSubstitutionFeatures() { | ||
| return GSUB_FEATURES; | ||
| } | ||
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| @Override | ||
| /** {@inheritDoc} */ | ||
| public ScriptContextTester getSubstitutionContextTester() { | ||
| return null; | ||
| } | ||
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| @Override | ||
| /** {@inheritDoc} */ | ||
| public String[] getPositioningFeatures() { | ||
| return GPOS_FEATURES; | ||
| } | ||
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| @Override | ||
| /** {@inheritDoc} */ | ||
| public ScriptContextTester getPositioningContextTester() { | ||
| return null; | ||
| } | ||
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| @Override | ||
| /** {@inheritDoc} */ | ||
| public GlyphSequence reorderCombiningMarks(GlyphDefinitionTable gdef, GlyphSequence gs, int[] unscaledWidths, int[][] gpa, String script, String language) { | ||
| int ng = gs.getGlyphCount(); | ||
| int[] ga = gs.getGlyphArray(false); | ||
| int nm = 0; | ||
| // count combining marks | ||
| for (int i = 0; i < ng; i++) { | ||
| int gid = ga [ i ]; | ||
| int gw = unscaledWidths [ i ]; | ||
| if (isReorderedMark(gdef, ga, unscaledWidths, i)) { | ||
| nm++; | ||
| } | ||
| } | ||
| // only reorder if there is at least one mark and at least one non-mark glyph | ||
| if ((nm > 0) && ((ng - nm) > 0)) { | ||
| CharAssociation[] aa = gs.getAssociations(0, -1); | ||
| int[] nga = new int [ ng ]; | ||
| int[][] npa = (gpa != null) ? new int [ ng ][] : null; | ||
| CharAssociation[] naa = new CharAssociation [ ng ]; | ||
| int k = 0; | ||
| CharAssociation ba = null; | ||
| int bg = -1; | ||
| int[] bpa = null; | ||
| for (int i = 0; i < ng; i++) { | ||
| int gid = ga [ i ]; | ||
| int[] pa = (gpa != null) ? gpa [ i ] : null; | ||
| CharAssociation ca = aa [ i ]; | ||
| if (isReorderedMark(gdef, ga, unscaledWidths, i)) { | ||
| nga [ k ] = gid; | ||
| naa [ k ] = ca; | ||
| if (npa != null) { | ||
| npa [ k ] = pa; | ||
| } | ||
| k++; | ||
| } else { | ||
| if (bg != -1) { | ||
| nga [ k ] = bg; | ||
| naa [ k ] = ba; | ||
| if (npa != null) { | ||
| npa [ k ] = bpa; | ||
| } | ||
| k++; | ||
| bg = -1; | ||
| ba = null; | ||
| bpa = null; | ||
| } | ||
| if (bg == -1) { | ||
| bg = gid; | ||
| ba = ca; | ||
| bpa = pa; | ||
| } | ||
| } | ||
| } | ||
| if (bg != -1) { | ||
| nga [ k ] = bg; | ||
| naa [ k ] = ba; | ||
| if (npa != null) { | ||
| npa [ k ] = bpa; | ||
| } | ||
| k++; | ||
| } | ||
| assert k == ng; | ||
| if (npa != null) { | ||
| System.arraycopy(npa, 0, gpa, 0, ng); | ||
| } | ||
| return new GlyphSequence(gs, null, nga, null, null, naa, null); | ||
| } else { | ||
| return gs; | ||
| } | ||
| } | ||
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| protected boolean isReorderedMark(GlyphDefinitionTable gdef, int[] glyphs, int[] unscaledWidths, int index) { | ||
| //return gdef.isGlyphClass(glyphs[index], GlyphDefinitionTable.GLYPH_CLASS_MARK) && (unscaledWidths[index] != 0); | ||
| return gdef.isGlyphClass(glyphs[index], GlyphDefinitionTable.GLYPH_CLASS_MARK); | ||
| } | ||
|
|
||
| } |
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31
src/main/java/org/apache/fop/complexscripts/scripts/HebrewScriptProcessor.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
|
|
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| /* $Id$ */ | ||
| package org.apache.fop.complexscripts.scripts; | ||
|
|
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| import org.apache.fop.complexscripts.fonts.GlyphDefinitionTable; | ||
|
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| public class HebrewScriptProcessor extends DefaultScriptProcessor { | ||
| HebrewScriptProcessor(String script) { | ||
| super(script); | ||
| } | ||
|
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| protected boolean isReorderedMark(GlyphDefinitionTable gdef, int[] glyphs, int[] unscaledWidths, int index) { | ||
| return gdef.isGlyphClass(glyphs[index], GlyphDefinitionTable.GLYPH_CLASS_MARK) && (unscaledWidths[index] != 0); | ||
| } | ||
| } |
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