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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.
- */
-
- /* $Id$ */
-
- package org.apache.fop.render.pcl.fonts.truetype;
-
- import java.io.ByteArrayOutputStream;
- import java.io.IOException;
- import java.io.InputStream;
- import java.io.UnsupportedEncodingException;
- import java.util.ArrayList;
- import java.util.HashMap;
- import java.util.List;
- import java.util.Map;
- import java.util.Map.Entry;
-
- import org.apache.fop.fonts.CustomFont;
- import org.apache.fop.fonts.MultiByteFont;
- import org.apache.fop.fonts.SingleByteFont;
- import org.apache.fop.fonts.Typeface;
- import org.apache.fop.fonts.truetype.FontFileReader;
- import org.apache.fop.fonts.truetype.OFDirTabEntry;
- import org.apache.fop.fonts.truetype.OFFontLoader;
- import org.apache.fop.fonts.truetype.OFMtxEntry;
- import org.apache.fop.fonts.truetype.OFTableName;
- import org.apache.fop.fonts.truetype.OpenFont;
- import org.apache.fop.fonts.truetype.TTFFile;
- import org.apache.fop.render.java2d.CustomFontMetricsMapper;
- import org.apache.fop.render.pcl.fonts.PCLByteWriterUtil;
- import org.apache.fop.render.pcl.fonts.PCLFontReader;
- import org.apache.fop.render.pcl.fonts.PCLFontSegment;
- import org.apache.fop.render.pcl.fonts.PCLFontSegment.SegmentID;
- import org.apache.fop.render.pcl.fonts.PCLSymbolSet;
-
- public class PCLTTFFontReader extends PCLFontReader {
- protected TTFFile ttfFont;
- protected InputStream fontStream;
- protected FontFileReader reader;
- private PCLTTFPCLTFontTable pcltTable;
- private PCLTTFOS2FontTable os2Table;
- private PCLTTFPOSTFontTable postTable;
- private PCLTTFTableFactory ttfTableFactory;
- private Map<Integer, int[]> charOffsets;
- private Map<Integer, Integer> charMtxOffsets;
-
- private static final int HMTX_RESTRICT_SIZE = 50000;
-
- private static final Map<Integer, Integer> FONT_WEIGHT = new HashMap<Integer, Integer>() {
- private static final long serialVersionUID = 1L;
- {
- put(100, -6); // 100 Thin
- put(200, -4); // 200 Extra-Light
- put(300, -3); // 300 Light
- put(400, 0); // 400 Normal (Regular)
- put(500, 0); // 500 Medium
- put(600, 2); // 600 Semi-bold
- put(700, 3); // 700 Bold
- put(800, 4); // 800 Extra-bold
- put(900, 5); // 900 Black (Heavy)
- }
- };
-
- private static final Map<Integer, Integer> FONT_SERIF = new HashMap<Integer, Integer>() {
- private static final long serialVersionUID = 1L;
- {
- /** The following are the best guess conversion between serif styles. Unfortunately
- * there appears to be no standard and so each specification has it's own set of values.
- * Please change if better fit found. **/
- put(0, 0); // Any = Normal Sans
- put(1, 64); // No Fit = Sans Serif
- put(2, 9); // Cove = Script Nonconnecting
- put(3, 12); // Obtuse Cove = Script Broken Letter
- put(4, 10); // Square Cove = Script Joining
- put(5, 0); // Obtuse Square Cove = Sans Serif Square
- put(6, 128); // Square = Serif
- put(7, 2); // Thin = Serif Line
- put(8, 7); // Bone = Rounded Bracket
- put(9, 11); // Exeraggerated = Script Calligraphic
- put(10, 3); // Triangle = Serif Triangle
- put(11, 0); // Normal Sans = Sans Serif Square
- put(12, 4); // Obtuse Sans = Serif Swath
- put(13, 6); // Perp Sans = Serif Bracket
- put(14, 8); // Flared = Flair Serif
- put(15, 1); // Rounded = Sans Serif Round
- }
- };
-
- private static final Map<Integer, Integer> FONT_WIDTH = new HashMap<Integer, Integer>() {
- private static final long serialVersionUID = 1L;
- {
- /** The conversions between TTF and PCL are not 1 to 1 **/
- put(1, -5); // 1 = Ultra Compressed
- put(2, -4); // 2 = Extra Compressed
- put(3, -3); // 3 = Compresses
- put(4, -2); // 4 = Condensed
- put(5, 0); // 5 = Normal
- put(6, 2); // 6 = Expanded
- put(7, 3); // 5 = Extra Expanded
- }
- };
-
- private int scaleFactor = -1;
- private PCLSymbolSet symbolSet = PCLSymbolSet.Bound_Generic;
-
- public PCLTTFFontReader(Typeface font) throws IOException {
- super(font);
- loadFont();
- }
-
- protected void loadFont() throws IOException {
- if (typeface instanceof CustomFontMetricsMapper) {
- CustomFontMetricsMapper fontMetrics = (CustomFontMetricsMapper) typeface;
- CustomFont font = (CustomFont) fontMetrics.getRealFont();
- setFont((CustomFont) fontMetrics.getRealFont());
- String fontName = font.getFullName();
- fontStream = font.getInputStream();
- reader = new FontFileReader(fontStream);
-
- ttfFont = new TTFFile();
- String header = OFFontLoader.readHeader(reader);
- ttfFont.readFont(reader, header, fontName);
- readFontTables();
- } else {
- // TODO - Handle when typeface is not in the expected format for a PCL TrueType object
- }
- }
-
- protected void readFontTables() throws IOException {
- PCLTTFTable fontTable;
- fontTable = readFontTable(OFTableName.PCLT);
- if (fontTable instanceof PCLTTFPCLTFontTable) {
- pcltTable = (PCLTTFPCLTFontTable) fontTable;
- }
- fontTable = readFontTable(OFTableName.OS2);
- if (fontTable instanceof PCLTTFOS2FontTable) {
- os2Table = (PCLTTFOS2FontTable) fontTable;
- }
- fontTable = readFontTable(OFTableName.POST);
- if (fontTable instanceof PCLTTFPOSTFontTable) {
- postTable = (PCLTTFPOSTFontTable) fontTable;
- }
- }
-
- private PCLTTFTable readFontTable(OFTableName tableName) throws IOException {
- if (ttfFont.seekTab(reader, tableName, 0)) {
- return getTTFTableFactory().newInstance(tableName);
- }
- return null;
- }
-
- private PCLTTFTableFactory getTTFTableFactory() {
- if (ttfTableFactory == null) {
- ttfTableFactory = PCLTTFTableFactory.getInstance(reader);
- }
- return ttfTableFactory;
- }
-
- @Override
- public int getDescriptorSize() {
- return 72; // Descriptor size (leave at 72 for our purposes)
- }
-
- @Override
- public int getHeaderFormat() {
- return 15; // TrueType Scalable Font
- }
-
- @Override
- public int getFontType() {
- if (symbolSet == PCLSymbolSet.Unbound) {
- return 11; // Font Type - Unbound TrueType Scalable font
- } else {
- return 2; // 0-255 (except 0, 7 and 27)
- }
- }
-
- @Override
- public int getStyleMSB() {
- if (pcltTable != null) {
- return getMSB(pcltTable.getStyle());
- }
- return 3;
- }
-
- @Override
- public int getBaselinePosition() {
- return 0; // Baseline position must be set to 0 for TTF fonts
- }
-
- @Override
- public int getCellWidth() {
- int[] bbox = ttfFont.getBBoxRaw();
- return bbox[2] - bbox[0];
- }
-
- @Override
- public int getCellHeight() {
- int[] bbox = ttfFont.getBBoxRaw();
- return bbox[3] - bbox[1];
- }
-
- @Override
- public int getOrientation() {
- return 0; // Scalable fonts (TrueType) must be 0
- }
-
- @Override
- public int getSpacing() {
- if (os2Table != null) {
- return (os2Table.getPanose()[4] == 9) ? 0 : 1;
- } else if (postTable != null) {
- return postTable.getIsFixedPitch();
- }
- return 1;
- }
-
- @Override
- public int getSymbolSet() {
- if (pcltTable != null) {
- return pcltTable.getSymbolSet();
- } else {
- return symbolSet.getKind1();
- }
- }
-
- @Override
- public int getPitch() {
- int pitch = ttfFont.getCharWidthRaw(0x20);
- if (pitch < 0) {
- // No advance width found for the space character
- return 0;
- }
- return pitch;
- }
-
- @Override
- public int getHeight() {
- return 0; // Fixed zero value for TrueType fonts
- }
-
- @Override
- public int getXHeight() {
- if (pcltTable != null) {
- return pcltTable.getXHeight();
- } else if (os2Table != null) {
- return os2Table.getXHeight();
- }
- return 0;
- }
-
- @Override
- public int getWidthType() {
- if (pcltTable != null) {
- return pcltTable.getWidthType();
- } else if (os2Table != null) {
- return convertTTFWidthClass(os2Table.getWidthClass());
- }
- return 0;
- }
-
- private int convertTTFWidthClass(int widthClass) {
- if (FONT_WIDTH.containsKey(widthClass)) {
- return FONT_WIDTH.get(widthClass);
- } else {
- return 0; // No match - return normal
- }
- }
-
- @Override
- public int getStyleLSB() {
- if (pcltTable != null) {
- return getLSB(pcltTable.getStyle());
- }
- return 224;
- }
-
- @Override
- public int getStrokeWeight() {
- if (pcltTable != null) {
- return pcltTable.getStrokeWeight();
- } else if (os2Table != null) {
- return convertTTFWeightClass(os2Table.getWeightClass());
- }
- return 0;
- }
-
- private int convertTTFWeightClass(int weightClass) {
- if (FONT_WEIGHT.containsKey(weightClass)) {
- return FONT_WEIGHT.get(weightClass);
- } else {
- return 0; // No match - return normal
- }
- }
-
- @Override
- public int getTypefaceLSB() {
- if (pcltTable != null) {
- return getLSB(pcltTable.getTypeFamily());
- }
- return 254;
- }
-
- @Override
- public int getTypefaceMSB() {
- if (pcltTable != null) {
- return getMSB(pcltTable.getTypeFamily());
- }
- return 0;
- }
-
- @Override
- public int getSerifStyle() {
- if (pcltTable != null) {
- return pcltTable.getSerifStyle();
- } else {
- return convertFromTTFSerifStyle();
- }
- }
-
- private int convertFromTTFSerifStyle() {
- if (os2Table != null) {
- int serifStyle = os2Table.getPanose()[1];
- return FONT_SERIF.get(serifStyle);
- }
- return 0;
- }
-
- @Override
- public int getQuality() {
- return 2; // Letter quality
- }
-
- @Override
- public int getPlacement() {
- return 0; // Fixed value of 0 for TrueType (scalable fonts)
- }
-
- @Override
- public int getUnderlinePosition() {
- return 0; // Scalable fonts has a fixed value of 0 - See Master Underline Position
- }
-
- @Override
- public int getUnderlineThickness() {
- return 0; // Scalable fonts has a fixed value of 0 - See Master Underline Thickness
- }
-
- @Override
- public int getTextHeight() {
- return 2048;
- }
-
- @Override
- public int getTextWidth() {
- if (os2Table != null) {
- return os2Table.getAvgCharWidth();
- }
- return 0;
- }
-
- @Override
- public int getFirstCode() {
- return 32;
- }
-
- @Override
- public int getLastCode() {
- return 255; // Bound font with a maximum of 255 characters
- }
-
- @Override
- public int getPitchExtended() {
- return 0; // Zero for Scalable fonts
- }
-
- @Override
- public int getHeightExtended() {
- return 0; // Zero for Scalable fonts
- }
-
- @Override
- public int getCapHeight() {
- if (pcltTable != null) {
- return pcltTable.getStrokeWeight();
- } else if (os2Table != null) {
- return os2Table.getCapHeight();
- }
- return 0;
- }
-
- @Override
- public int getFontNumber() {
- if (pcltTable != null) {
- return (int) pcltTable.getFontNumber();
- }
- return 0;
- }
-
- @Override
- public String getFontName() {
- if (pcltTable != null) {
- return pcltTable.getTypeface();
- } else {
- return ttfFont.getFullName();
- }
- }
-
- @Override
- public int getScaleFactor() throws IOException {
- if (scaleFactor == -1) {
- OFTableName headTag = OFTableName.HEAD;
- if (ttfFont.seekTab(reader, headTag, 0)) {
- reader.readTTFLong(); // Version
- reader.readTTFLong(); // Font revision
- reader.readTTFLong(); // Check sum adjustment
- reader.readTTFLong(); // Magic number
- reader.readTTFShort(); // Flags
- scaleFactor = reader.readTTFUShort(); // Units per em
- return scaleFactor;
- }
- } else {
- return scaleFactor;
- }
- return 0;
- }
-
- @Override
- public int getMasterUnderlinePosition() throws IOException {
- return (int) Math.round(getScaleFactor() * 0.2);
- }
-
- @Override
- public int getMasterUnderlineThickness() throws IOException {
- return (int) Math.round(getScaleFactor() * 0.05);
- }
-
- @Override
- public int getFontScalingTechnology() {
- return 1; // TrueType scalable font
- }
-
- @Override
- public int getVariety() {
- return 0; // TrueType fonts must be set to zero
- }
-
- public List<PCLFontSegment> getFontSegments(Map<Character, Integer> mappedGlyphs)
- throws IOException {
- List<PCLFontSegment> fontSegments = new ArrayList<PCLFontSegment>();
- fontSegments.add(new PCLFontSegment(SegmentID.CC, getCharacterComplement()));
- fontSegments.add(new PCLFontSegment(SegmentID.PA, PCLByteWriterUtil.toByteArray(os2Table.getPanose())));
- fontSegments.add(new PCLFontSegment(SegmentID.GT, getGlobalTrueTypeData(mappedGlyphs)));
- fontSegments.add(new PCLFontSegment(SegmentID.CP, ttfFont.getCopyrightNotice().getBytes("US-ASCII")));
- fontSegments.add(new PCLFontSegment(SegmentID.NULL, new byte[0]));
- return fontSegments;
- }
-
- /**
- * See Font Header Format 11-35 (Character Complement Array) in the PCL 5 Specification. Defined as an array of 8
- * bytes specific to certain character sets. In this case specifying 0 for all values (default complement) means the
- * font is compatible with any character sets. '110' on least significant bits signifies unicode. See specification
- * for further customization.
- */
- private byte[] getCharacterComplement() {
- byte[] ccUnicode = new byte[8];
- ccUnicode[7] = 6;
- return ccUnicode;
- }
-
- private byte[] getGlobalTrueTypeData(Map<Character, Integer> mappedGlyphs) throws IOException {
- ByteArrayOutputStream baos = new ByteArrayOutputStream();
- List<TableOffset> tableOffsets = new ArrayList<TableOffset>();
- // Version
- baos.write(PCLByteWriterUtil.unsignedInt(1)); // Major
- baos.write(PCLByteWriterUtil.unsignedInt(0)); // Minor
- int numTables = 5; // head, hhea, hmtx, maxp and gdir
- // Optional Hint Tables
- OFDirTabEntry headTable = ttfFont.getDirectoryEntry(OFTableName.CVT);
- if (headTable != null) {
- numTables++;
- }
- OFDirTabEntry fpgmTable = ttfFont.getDirectoryEntry(OFTableName.FPGM);
- if (fpgmTable != null) {
- numTables++;
- }
- OFDirTabEntry prepTable = ttfFont.getDirectoryEntry(OFTableName.PREP);
- if (prepTable != null) {
- numTables++;
- }
- baos.write(PCLByteWriterUtil.unsignedInt(numTables)); // numTables
- int maxPowerNumTables = PCLByteWriterUtil.maxPower2(numTables);
- int searchRange = maxPowerNumTables * 16;
- baos.write(PCLByteWriterUtil.unsignedInt(searchRange));
- baos.write(PCLByteWriterUtil.unsignedInt(PCLByteWriterUtil.log(maxPowerNumTables, 2))); // Entry Selector
- baos.write(PCLByteWriterUtil.unsignedInt(numTables * 16 - searchRange)); // Range shift
-
- // Add default data tables
- writeTrueTypeTable(baos, OFTableName.HEAD, tableOffsets);
- writeTrueTypeTable(baos, OFTableName.HHEA, tableOffsets);
- byte[] hmtxTable = createHmtx(mappedGlyphs);
- writeSubsetHMTX(baos, OFTableName.HMTX, tableOffsets, hmtxTable);
- writeTrueTypeTable(baos, OFTableName.MAXP, tableOffsets);
- // Write the blank GDIR directory which is built in memory on the printer
- writeGDIR(baos);
-
- // Add optional data tables (for hints)
- writeTrueTypeTable(baos, OFTableName.CVT, tableOffsets);
- writeTrueTypeTable(baos, OFTableName.FPGM, tableOffsets);
- writeTrueTypeTable(baos, OFTableName.PREP, tableOffsets);
-
- baos = copyTables(tableOffsets, baos, hmtxTable, mappedGlyphs.size());
-
- return baos.toByteArray();
- }
-
- private static class TableOffset {
- private long originOffset;
- private long originLength;
- private int newOffset;
-
- public TableOffset(long originOffset, long originLength, int newOffset) {
- this.originOffset = originOffset;
- this.originLength = originLength;
- this.newOffset = newOffset;
- }
-
- public long getOriginOffset() {
- return originOffset;
- }
-
- public long getOriginLength() {
- return originLength;
- }
-
- public int getNewOffset() {
- return newOffset;
- }
- }
-
- private void writeTrueTypeTable(ByteArrayOutputStream baos, OFTableName table,
- List<TableOffset> tableOffsets) throws IOException, UnsupportedEncodingException {
- OFDirTabEntry tabEntry = ttfFont.getDirectoryEntry(table);
- if (tabEntry != null) {
- baos.write(tabEntry.getTag());
- baos.write(PCLByteWriterUtil.unsignedLongInt(tabEntry.getChecksum()));
- TableOffset newTableOffset = new TableOffset(tabEntry.getOffset(),
- tabEntry.getLength(), baos.size());
- tableOffsets.add(newTableOffset);
- baos.write(PCLByteWriterUtil.unsignedLongInt(0)); // Offset to be set later
- baos.write(PCLByteWriterUtil.unsignedLongInt(tabEntry.getLength()));
- }
- }
-
- private void writeGDIR(ByteArrayOutputStream baos) throws UnsupportedEncodingException, IOException {
- baos.write("gdir".getBytes("ISO-8859-1"));
- baos.write(PCLByteWriterUtil.unsignedLongInt(0)); // Checksum
- baos.write(PCLByteWriterUtil.unsignedLongInt(0)); // Offset
- baos.write(PCLByteWriterUtil.unsignedLongInt(0)); // Length
- }
-
- private ByteArrayOutputStream copyTables(List<TableOffset> tableOffsets,
- ByteArrayOutputStream baos, byte[] hmtxTable, int hmtxSize)
- throws IOException {
- Map<Integer, byte[]> offsetValues = new HashMap<Integer, byte[]>();
- for (TableOffset tableOffset : tableOffsets) {
- offsetValues.put(tableOffset.getNewOffset(), PCLByteWriterUtil.unsignedLongInt(baos.size()));
- if (tableOffset.getOriginOffset() == -1) { // Update the offset in the table directory
- baos.write(hmtxTable);
- } else {
- byte[] tableData = reader.getBytes((int) tableOffset.getOriginOffset(),
- (int) tableOffset.getOriginLength());
- int index = tableOffsets.indexOf(tableOffset);
- if (index == 1) {
- tableData = updateHHEA(tableData, hmtxSize + 33);
- }
-
- // Write the table data to the end of the TrueType segment output
- baos.write(tableData);
- }
- }
- baos = updateOffsets(baos, offsetValues);
- return baos;
- }
-
- private byte[] updateHHEA(byte[] tableData, int hmtxSize) {
- writeUShort(tableData, tableData.length - 2, hmtxSize);
- return tableData;
- }
-
- private ByteArrayOutputStream updateOffsets(ByteArrayOutputStream baos, Map<Integer, byte[]> offsets)
- throws IOException {
- byte[] softFont = baos.toByteArray();
- for (Entry<Integer, byte[]> integerEntry : offsets.entrySet()) {
- PCLByteWriterUtil.updateDataAtLocation(softFont, integerEntry.getValue(), integerEntry.getKey());
- }
- baos = new ByteArrayOutputStream();
- baos.write(softFont);
- return baos;
- }
-
- @Override
- public Map<Integer, int[]> getCharacterOffsets() throws IOException {
- if (charOffsets == null) {
- List<OFMtxEntry> mtx = ttfFont.getMtx();
- OFTableName glyfTag = OFTableName.GLYF;
- charOffsets = new HashMap<Integer, int[]>();
- OFDirTabEntry tabEntry = ttfFont.getDirectoryEntry(glyfTag);
- if (ttfFont.seekTab(reader, glyfTag, 0)) {
- for (int i = 1; i < mtx.size(); i++) {
- OFMtxEntry entry = mtx.get(i);
- OFMtxEntry nextEntry;
- int nextOffset = 0;
- int charCode = 0;
- if (entry.getUnicodeIndex().size() > 0) {
- charCode = entry.getUnicodeIndex().get(0);
- } else {
- charCode = entry.getIndex();
- }
-
- if (i < mtx.size() - 1) {
- nextEntry = mtx.get(i + 1);
- nextOffset = (int) nextEntry.getOffset();
- } else {
- nextOffset = (int) ttfFont.getLastGlyfLocation();
- }
- int glyphOffset = (int) entry.getOffset();
- int glyphLength = nextOffset - glyphOffset;
-
- charOffsets.put(charCode, new int[]{(int) tabEntry.getOffset() + glyphOffset, glyphLength});
- }
- }
- }
- return charOffsets;
- }
-
- @Override
- public OpenFont getFontFile() {
- return ttfFont;
- }
-
- @Override
- public FontFileReader getFontFileReader() {
- return reader;
- }
-
- private void writeSubsetHMTX(ByteArrayOutputStream baos, OFTableName table,
- List<TableOffset> tableOffsets, byte[] hmtxTable) throws IOException {
- OFDirTabEntry tabEntry = ttfFont.getDirectoryEntry(table);
- if (tabEntry != null) {
- baos.write(tabEntry.getTag());
- // Override the original checksum for the subset version
- baos.write(PCLByteWriterUtil.unsignedLongInt(getCheckSum(hmtxTable, 0, hmtxTable.length)));
- TableOffset newTableOffset = new TableOffset(-1, hmtxTable.length, baos.size());
- tableOffsets.add(newTableOffset);
- baos.write(PCLByteWriterUtil.unsignedLongInt(0)); // Offset to be set later
- baos.write(PCLByteWriterUtil.unsignedLongInt(hmtxTable.length));
- }
- }
-
- protected static int getCheckSum(byte[] data, int start, int size) {
- // All the tables here are aligned on four byte boundaries
- // Add remainder to size if it's not a multiple of 4
- int remainder = size % 4;
- if (remainder != 0) {
- size += remainder;
- }
-
- long sum = 0;
-
- for (int i = 0; i < size; i += 4) {
- long l = 0;
- for (int j = 0; j < 4; j++) {
- l <<= 8;
- if (data.length > (start + i + j)) {
- l |= data[start + i + j] & 0xff;
- }
- }
- sum += l;
- }
- return (int) sum;
- }
-
- protected byte[] createHmtx(Map<Character, Integer> mappedGlyphs) throws IOException {
- byte[] hmtxTable = new byte[((mappedGlyphs.size() + 32) * 4)];
- OFDirTabEntry entry = ttfFont.getDirectoryEntry(OFTableName.HMTX);
-
- if (entry != null) {
- for (Entry<Character, Integer> glyphSubset : mappedGlyphs.entrySet()) {
- char unicode = glyphSubset.getKey();
- int originalIndex = 0;
- int softFontGlyphIndex = glyphSubset.getValue();
- if (font instanceof MultiByteFont) {
- originalIndex = ((MultiByteFont) font).getGIDFromChar(unicode);
-
- writeUShort(hmtxTable, (softFontGlyphIndex) * 4,
- ttfFont.getMtx().get(originalIndex).getWx());
- writeUShort(hmtxTable, (softFontGlyphIndex) * 4 + 2,
- ttfFont.getMtx().get(originalIndex).getLsb());
- } else {
- originalIndex = ((SingleByteFont) font).getGIDFromChar(unicode);
-
- writeUShort(hmtxTable, (softFontGlyphIndex) * 4,
- font.getWidth(originalIndex, 1));
- writeUShort(hmtxTable, (softFontGlyphIndex) * 4 + 2, 0);
- }
- }
- }
- return hmtxTable;
- }
-
- /**
- * Appends a USHORT to the output array, updates currentPost but not realSize
- */
- private void writeUShort(byte[] out, int offset, int s) {
- byte b1 = (byte) ((s >> 8) & 0xff);
- byte b2 = (byte) (s & 0xff);
- out[offset] = b1;
- out[offset + 1] = b2;
- }
-
- public Map<Integer, Integer> scanMtxCharacters() throws IOException {
- if (charMtxOffsets == null) {
- charMtxOffsets = new HashMap<Integer, Integer>();
- List<OFMtxEntry> mtx = ttfFont.getMtx();
- OFTableName glyfTag = OFTableName.GLYF;
- if (ttfFont.seekTab(reader, glyfTag, 0)) {
- for (int i = 1; i < mtx.size(); i++) {
- OFMtxEntry entry = mtx.get(i);
- int charCode = 0;
- if (entry.getUnicodeIndex().size() > 0) {
- charCode = entry.getUnicodeIndex().get(0);
- } else {
- charCode = entry.getIndex();
- }
- charMtxOffsets.put(charCode, i);
- }
- }
- }
- return charMtxOffsets;
- }
- }
-
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