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/*
 * ===========================================
 * Java Pdf Extraction Decoding Access Library
 * ===========================================
 *
 * Project Info:  http://www.idrsolutions.com
 * Help section for developers at http://www.idrsolutions.com/java-pdf-library-support/
 *
 * (C) Copyright 1997-2013, IDRsolutions and Contributors.
 *
 * 	This file is part of JPedal
 *
     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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA


 *
 * ---------------
 * Head.java
 * ---------------
 */
package org.jpedal.fonts.tt;

import org.jpedal.utils.LogWriter;

public class Head extends Table {

	private static final long serialVersionUID = 628739364123537763L;

	/** format used */
	protected int format = 0; // default for otf

	/** bounds on font */
	protected float[] FontBBox = new float[4];

	protected int flags = 0; // default for otf

	protected int unitsPerEm = 1024; // default for otf

	public Head(FontFile2 currentFontFile) {

		// move to start and check exists
		int startPointer = currentFontFile.selectTable(FontFile2.HEAD);

		// read 'head' table
		if (startPointer == 0) {
			if (LogWriter.isOutput()) LogWriter.writeLog("No head table found");
		}
		else {

			currentFontFile.getNextUint32(); // id

			// ignore values
			for (int i = 0; i < 3; i++)
				currentFontFile.getNextUint32();

			this.flags = currentFontFile.getNextUint16();
			this.unitsPerEm = currentFontFile.getNextUint16();

			// ignore dates
			for (int i = 0; i < 2; i++)
				currentFontFile.getNextUint64();

			// bounds
			for (int i = 0; i < 4; i++)
				this.FontBBox[i] = currentFontFile.getNextSignedInt16();

			// ignore more flags
			for (int i = 0; i < 3; i++)
				currentFontFile.getNextUint16();

			// finally the bit we want indicating size of chunks in mapx
			this.format = currentFontFile.getNextUint16();

		}
	}

	public Head() {}

	public int getFormat() {
		return this.format;
	}

	public float[] getFontBBox() {
		return this.FontBBox;
	}

	/**
	 * get flags in Head
	 */
	public int getFlags() {
		return this.flags;
	}

	/**
	 * Returns the unitsPerEm.
	 */
	public int getUnitsPerEm() {
		return this.unitsPerEm;
	}

}