/*
============================================================================
The Apache Software License, Version 1.1
============================================================================
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tion, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
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this list of conditions and the following disclaimer in the documentation
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3. The end-user documentation included with the redistribution, if any, must
include the following acknowledgment: "This product includes software
developed by the Apache Software Foundation (http://www.apache.org/)."
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and wherever such third-party acknowledgments normally appear.
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
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*/
package jogamp.graph.font.typecast.ot;
import java.io.DataInputStream;
import java.io.IOException;
import jogamp.graph.font.typecast.ot.table.CmapTable;
import jogamp.graph.font.typecast.ot.table.DirectoryEntry;
import jogamp.graph.font.typecast.ot.table.GlyfDescript;
import jogamp.graph.font.typecast.ot.table.GlyfTable;
import jogamp.graph.font.typecast.ot.table.HdmxTable;
import jogamp.graph.font.typecast.ot.table.HeadTable;
import jogamp.graph.font.typecast.ot.table.HheaTable;
import jogamp.graph.font.typecast.ot.table.HmtxTable;
import jogamp.graph.font.typecast.ot.table.LocaTable;
import jogamp.graph.font.typecast.ot.table.MaxpTable;
import jogamp.graph.font.typecast.ot.table.NameTable;
import jogamp.graph.font.typecast.ot.table.Os2Table;
import jogamp.graph.font.typecast.ot.table.PostTable;
import jogamp.graph.font.typecast.ot.table.Table;
import jogamp.graph.font.typecast.ot.table.TableDirectory;
import jogamp.graph.font.typecast.ot.table.TableFactory;
import jogamp.graph.font.typecast.ot.table.VheaTable;
/**
* The TrueType font.
* @version $Id: OTFont.java,v 1.6 2007-01-31 01:49:18 davidsch Exp $
* @author <a href="mailto:davidsch@dev.java.net">David Schweinsberg</a>, Sven Gothel
*/
public class OTFont {
private final OTFontCollection _fc;
private TableDirectory _tableDirectory = null;
private Table[] _tables;
private Os2Table _os2;
private CmapTable _cmap;
private GlyfTable _glyf;
private HeadTable _head;
private HheaTable _hhea;
private HdmxTable _hdmx;
private HmtxTable _hmtx;
private LocaTable _loca;
private MaxpTable _maxp;
private NameTable _name;
private PostTable _post;
private VheaTable _vhea;
/**
* Constructor
*/
public OTFont(final OTFontCollection fc) {
_fc = fc;
}
public StringBuilder getName(final int nameIndex, StringBuilder sb) {
if(null == sb) {
sb = new StringBuilder();
}
return _name.getRecordsRecordString(sb, nameIndex);
}
public StringBuilder getAllNames(StringBuilder sb, final String separator) {
if(null != _name) {
if(null == sb) {
sb = new StringBuilder();
}
for(int i=0; i<_name.getNumberOfNameRecords(); i++) {
_name.getRecord(i).getRecordString(sb).append(separator);
}
}
return sb;
}
public Table getTable(final int tableType) {
for (int i = 0; i < _tables.length; i++) {
if ((_tables[i] != null) && (_tables[i].getType() == tableType)) {
return _tables[i];
}
}
return null;
}
public Os2Table getOS2Table() {
return _os2;
}
public CmapTable getCmapTable() {
return _cmap;
}
public HeadTable getHeadTable() {
return _head;
}
public HheaTable getHheaTable() {
return _hhea;
}
public HdmxTable getHdmxTable() {
return _hdmx;
}
public HmtxTable getHmtxTable() {
return _hmtx;
}
public LocaTable getLocaTable() {
return _loca;
}
public MaxpTable getMaxpTable() {
return _maxp;
}
public NameTable getNameTable() {
return _name;
}
public PostTable getPostTable() {
return _post;
}
public VheaTable getVheaTable() {
return _vhea;
}
public int getAscent() {
return _hhea.getAscender();
}
public int getDescent() {
return _hhea.getDescender();
}
public int getNumGlyphs() {
return _maxp.getNumGlyphs();
}
public OTGlyph getGlyph(final int i) {
final GlyfDescript _glyfDescr = _glyf.getDescription(i);
return (null != _glyfDescr)
? new OTGlyph(
_glyfDescr,
_hmtx.getLeftSideBearing(i),
_hmtx.getAdvanceWidth(i))
: null;
}
public TableDirectory getTableDirectory() {
return _tableDirectory;
}
private Table readTable(
final DataInputStream dis,
final int tablesOrigin,
final int tag) throws IOException {
dis.reset();
final DirectoryEntry entry = _tableDirectory.getEntryByTag(tag);
if (entry == null) {
return null;
}
dis.skip(tablesOrigin + entry.getOffset());
return TableFactory.create(_fc, this, entry, dis);
}
/**
* @param dis OpenType/TrueType font file data.
* @param directoryOffset The Table Directory offset within the file. For a
* regular TTF/OTF file this will be zero, but for a TTC (Font Collection)
* the offset is retrieved from the TTC header. For a Mac font resource,
* offset is retrieved from the resource headers.
* @param tablesOrigin The point the table offsets are calculated from.
* Once again, in a regular TTF file, this will be zero. In a TTC is is
* also zero, but within a Mac resource, it is the beggining of the
* individual font resource data.
*/
protected void read(
final DataInputStream dis,
final int directoryOffset,
final int tablesOrigin) throws IOException {
// Load the table directory
dis.reset();
dis.skip(directoryOffset);
_tableDirectory = new TableDirectory(dis);
_tables = new Table[_tableDirectory.getNumTables()];
// Load some prerequisite tables
_head = (HeadTable) readTable(dis, tablesOrigin, Table.head);
_hhea = (HheaTable) readTable(dis, tablesOrigin, Table.hhea);
_maxp = (MaxpTable) readTable(dis, tablesOrigin, Table.maxp);
_loca = (LocaTable) readTable(dis, tablesOrigin, Table.loca);
_vhea = (VheaTable) readTable(dis, tablesOrigin, Table.vhea);
int index = 0;
_tables[index++] = _head;
_tables[index++] = _hhea;
_tables[index++] = _maxp;
if (_loca != null) {
_tables[index++] = _loca;
}
if (_vhea != null) {
_tables[index++] = _vhea;
}
// Load all other tables
for (int i = 0; i < _tableDirectory.getNumTables(); i++) {
final DirectoryEntry entry = _tableDirectory.getEntry(i);
if (entry.getTag() == Table.head
|| entry.getTag() == Table.hhea
|| entry.getTag() == Table.maxp
|| entry.getTag() == Table.loca
|| entry.getTag() == Table.vhea) {
continue;
}
dis.reset();
dis.skip(tablesOrigin + entry.getOffset());
_tables[index] = TableFactory.create(_fc, this, entry, dis);
++index;
}
// Get references to commonly used tables (these happen to be all the
// required tables)
_cmap = (CmapTable) getTable(Table.cmap);
_hdmx = (HdmxTable) getTable(Table.hdmx);
_hmtx = (HmtxTable) getTable(Table.hmtx);
_name = (NameTable) getTable(Table.name);
_os2 = (Os2Table) getTable(Table.OS_2);
_post = (PostTable) getTable(Table.post);
// If this is a TrueType outline, then we'll have at least the
// 'glyf' table (along with the 'loca' table)
_glyf = (GlyfTable) getTable(Table.glyf);
}
@Override
public String toString() {
if (_tableDirectory != null) {
return _tableDirectory.toString();
} else {
return "Empty font";
}
}
}