/*
* $Id: HdmxTable.java,v 1.2 2007-07-26 11:12:30 davidsch Exp $
*
* Typecast - The Font Development Environment
*
* Copyright (c) 2004-2007 David Schweinsberg
*
* Licensed 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.
*/
package jogamp.graph.font.typecast.ot.table;
import java.io.DataInput;
import java.io.IOException;
/**
* The Horizontal Device Metrics table for TrueType outlines. This stores
* integer advance widths scaled to specific pixel sizes.
* @author <a href="mailto:davidsch@dev.java.net">David Schweinsberg</a>
* @version $Id: HdmxTable.java,v 1.2 2007-07-26 11:12:30 davidsch Exp $
*/
public class HdmxTable implements Table {
public static class DeviceRecord {
private final short _pixelSize;
private final short _maxWidth;
private final short[] _widths;
protected DeviceRecord(final int numGlyphs, final DataInput di) throws IOException {
_pixelSize = di.readByte();
_maxWidth = di.readByte();
_widths = new short[numGlyphs];
for (int i = 0; i < numGlyphs; ++i) {
_widths[i] = di.readByte();
}
}
public short getPixelSize() {
return _pixelSize;
}
public short getMaxWidth() {
return _maxWidth;
}
public short[] getWidths() {
return _widths;
}
public short getWidth(final int glyphidx) {
return _widths[glyphidx];
}
}
private final DirectoryEntry _de;
private final int _version;
private final short _numRecords;
private final int _sizeDeviceRecords;
private final DeviceRecord[] _records;
/** Creates a new instance of HdmxTable */
protected HdmxTable(final DirectoryEntry de, final DataInput di, final MaxpTable maxp)
throws IOException {
_de = (DirectoryEntry) de.clone();
_version = di.readUnsignedShort();
_numRecords = di.readShort();
_sizeDeviceRecords = di.readInt();
_records = new DeviceRecord[_numRecords];
// Read the device records
for (int i = 0; i < _numRecords; ++i) {
_records[i] = new DeviceRecord(maxp.getNumGlyphs(), di);
}
}
public int getNumberOfRecords() {
return _numRecords;
}
public DeviceRecord getRecord(final int i) {
return _records[i];
}
@Override
public int getType() {
return hdmx;
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder();
sb.append("'hdmx' Table - Horizontal Device Metrics\n----------------------------------------\n");
sb.append("Size = ").append(_de.getLength()).append(" bytes\n")
.append("\t'hdmx' version: ").append(_version).append("\n")
.append("\t# device records: ").append(_numRecords).append("\n")
.append("\tRecord length: ").append(_sizeDeviceRecords).append("\n");
for (int i = 0; i < _numRecords; ++i) {
sb.append("\tDevRec ").append(i)
.append(": ppem = ").append(_records[i].getPixelSize())
.append(", maxWid = ").append(_records[i].getMaxWidth())
.append("\n");
for (int j = 0; j < _records[i].getWidths().length; ++j) {
sb.append(" ").append(j).append(". ")
.append(_records[i].getWidths()[j]).append("\n");
}
sb.append("\n\n");
}
return sb.toString();
}
/**
* Get a directory entry for this table. This uniquely identifies the
* table in collections where there may be more than one instance of a
* particular table.
* @return A directory entry
*/
@Override
public DirectoryEntry getDirectoryEntry() {
return _de;
}
}