/*
* $Id$
*
* Copyright (C) 2003-2015 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.awt.font.truetype;
import java.awt.Font;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import org.jnode.awt.font.spi.FontData;
import org.jnode.awt.font.spi.Glyph;
import org.jnode.awt.font.truetype.tables.CMapTable;
import org.jnode.awt.font.truetype.tables.GlyphTable;
import org.jnode.awt.font.truetype.tables.HeadTable;
import org.jnode.awt.font.truetype.tables.HorizontalHeaderTable;
import org.jnode.awt.font.truetype.tables.HorizontalMetricsTable;
import org.jnode.awt.font.truetype.tables.LocationsTable;
import org.jnode.awt.font.truetype.tables.MaxPTable;
import org.jnode.awt.font.truetype.tables.NameTable;
import org.jnode.awt.font.truetype.tables.OS2Table;
import org.jnode.awt.font.truetype.tables.TTFTable;
/**
* TrueType Font with all its tables.
*
* @author Simon Fischer
* @version $Id$
*/
public abstract class TTFFontData implements FontData {
/**
* Tables indexed by tag
*/
private final Map<TableClass, TTFTable> tables = new HashMap<TableClass, TTFTable>();
/**
* Initialize this instance.
*/
protected TTFFontData() {
}
public Glyph getGlyph(char c) throws IOException {
final GlyphTable glyphTable = getGlyphTable();
final CMapTable cmapTable = getCMapTable();
if (!(cmapTable.getNrEncodingTables() > 0)) {
throw new RuntimeException("No Encoding is found!");
}
final CMapTable.EncodingTable encTable = cmapTable.getEncodingTable(0);
if (encTable.getTableFormat() == null) {
throw new RuntimeException("The table is NUll!!");
}
//get the index for the needed glyph
final int index = encTable.getTableFormat().getGlyphIndex(c);
return glyphTable.getGlyph(index);
}
/**
* Gets the version of this font data.
*
* @return the version number
*/
public abstract int getFontVersion();
/**
* Create a new table with a given table.
*
* @param tc
* @param input
* @throws IOException
*/
protected final void newTable(TableClass tc, TTFInput input) throws IOException {
final TTFTable tbl = tc.create(this, input);
tables.put(tc, tbl);
}
/**
* Show the contents of this font data.
*/
public void show() {
// FIXME ... ick ... pass an OutputStream parameter or return a String
System.out.println("Tables:");
for (Object v : tables.values()) {
System.out.println(v);
}
}
/**
* ************************************************************************
* Returns the table with the given tag and reads it if necessary.
*
* @param tag
* @return The table
* @throws IOException
*/
private final TTFTable getTable(TableClass tag) throws IOException {
final TTFTable table = tables.get(tag);
if (table == null) throw new IOException("table is null for tag " + tag.getTag());
table.read();
return table;
}
/**
* Returns the glyph table and reads it if necessary.
*
* @return The glyph table
* @throws IOException
*/
public GlyphTable getGlyphTable() throws IOException {
return (GlyphTable) getTable(TableClass.GLYF);
}
/**
* Gets the maximum profile table
*
* @return The maximum profile table
* @throws IOException
*/
public MaxPTable getMaxPTable() throws IOException {
return (MaxPTable) getTable(TableClass.MAXP);
}
/**
* Gets the name table
*
* @return The name table
* @throws IOException
*/
public NameTable getNameTable() throws IOException {
return (NameTable) getTable(TableClass.NAME);
}
/**
* Gets the horizontal header table
*
* @return The horizontal header table
* @throws IOException
*/
public HorizontalHeaderTable getHorizontalHeaderTable()
throws IOException {
return (HorizontalHeaderTable) getTable(TableClass.HHEA);
}
/**
* Gets the horizontal metrics table
*
* @return The horizontal metrics table
* @throws IOException
*/
public HorizontalMetricsTable getHorizontalMetricsTable()
throws IOException {
return (HorizontalMetricsTable) getTable(TableClass.HMTX);
}
/**
* Gets the font header table
*
* @return The header table
* @throws IOException
*/
public HeadTable getHeaderTable() throws IOException {
return (HeadTable) getTable(TableClass.HEAD);
}
/**
* Gets the OS/2 / Windows metrics table
*
* @return The OS/2 / Windows metrics table
* @throws IOException
*/
public OS2Table getOS2Table() throws IOException {
return (OS2Table) getTable(TableClass.OS2);
}
/**
* Gets the location table
*
* @return The location table
* @throws IOException
*/
public LocationsTable getLocationsTable() throws IOException {
return (LocationsTable) getTable(TableClass.LOCA);
}
/**
* Gets the character to glyph mapping table
*
* @return The CMap table
* @throws IOException
*/
public CMapTable getCMapTable() throws IOException {
return (CMapTable) getTable(TableClass.CMAP);
}
/**
* Reads all tables. This method does not need to be called since the tables
* are read on demand ( <tt>getTable()</tt>. It might be useful to call
* it in order to print out all available information.
*
* @throws IOException
*/
public void readAll() throws IOException {
for (TTFTable table : tables.values()) {
if (table != null) {
table.read();
}
}
}
public void close() throws IOException {
}
/**
* Gets the style (in AWT terms) of this font
*
* @return The style
* @throws IOException
* @see Font#BOLD
* @see Font#ITALIC
* @see Font#PLAIN
*/
public int getStyle() throws IOException {
final OS2Table t = getOS2Table();
if (t != null) {
final int fsSel;
fsSel = t.getFsSelection();
int style = 0;
if ((fsSel & 0x01) != 0) {
style |= Font.ITALIC;
}
if ((fsSel & 0x20) != 0) {
style |= Font.BOLD;
}
return style;
} else {
return Font.PLAIN;
}
}
}