org.jpedal.fonts.tt.Head Maven / Gradle / Ivy

/*
 * ===========================================
 * Java Pdf Extraction Decoding Access Library
 * ===========================================
 *
 * Project Info:  http://www.idrsolutions.com
 * Help section for developers at http://www.idrsolutions.com/support/
 *
 * (C) Copyright 1997-2017 IDRsolutions and Contributors.
 *
 * This file is part of JPedal/JPDF2HTML5
 *
     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 {

    /**
     * format used
     */
    protected int glyphDataFormat; //default for otf

    protected int indexToLocFormat;

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

    protected int flags; //default for otf

    protected int unitsPerEm = 1024;  //default for otf

    public Head(final FontFile2 currentFontFile) {

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

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

            currentFontFile.getNextUint32(); //id

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

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

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

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

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

            indexToLocFormat = currentFontFile.getNextUint16();

            glyphDataFormat = currentFontFile.getNextUint16();

        }
    }

    public Head() {
    }


    public int getIndexToLocFormat() {
        return indexToLocFormat;
    }

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

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

}