org.jpedal.fonts.tt.Hhea 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
*
* ---------------
* Hhea.java
* ---------------
*/
package org.jpedal.fonts.tt;
public class Hhea extends Table {
public static final int VERSION = 0;
public static final int ASCENDER = 1;
public static final int DESCENDER = 2;
public static final int LINEGAP = 3;
public static final int ADVANCEWIDTHMAX = 4;
public static final int MINIMUMLEFTSIDEBEARING = 5;
public static final int MINIMUMRIGHTSIDEBEARING = 6;
public static final int XMAXEXTENT = 7;
public static final int CARETSLOPERISING = 8;
public static final int CARETSLOPERUN = 9;
public static final int CARETOFFSET = 10;
public static final int METRICDATAFORMAT = 11;
public static final int NUMBEROFMETRICS = 12;
private int version = 65536;
private int ascender = 1;
private int descender = -1;
private int lineGap;
private int advancedWidthMax;
private int minimumLeftSideBearing;
private int minimumRightSideBearing;
private int xMaxExtent;
private int caretSlopeRise;
private int caretSlopeRun;
private int caretOffset;
private int metricDataFormat;
private int numberOfHMetrics;
public Hhea(final FontFile2 currentFontFile) {
//move to start and check exists
final int startPointer = currentFontFile.selectTable(FontFile2.HHEA);
//read 'head' table
if (startPointer != 0) {
version = currentFontFile.getNextUint32(); //version 65536
ascender = currentFontFile.getFWord(); //ascender 1972
descender = currentFontFile.getFWord(); //descender -483
lineGap = currentFontFile.getFWord(); //lineGap 0
advancedWidthMax = currentFontFile.readUFWord(); //advanceWidthMax 2513
minimumLeftSideBearing = currentFontFile.getFWord(); //minLeftSideBearing -342
minimumRightSideBearing = currentFontFile.getFWord(); //minRightSideBearing -340
xMaxExtent = currentFontFile.getFWord(); //xMaxExtent 2454
caretSlopeRise = currentFontFile.getNextInt16(); //caretSlopeRise 1
caretSlopeRun = currentFontFile.getNextInt16(); //caretSlopeRun 0
caretOffset = currentFontFile.getFWord(); //caretOffset 0
//reserved values
for (int i = 0; i < 4; i++) {
currentFontFile.getNextUint16(); //0
}
metricDataFormat = currentFontFile.getNextInt16(); //metricDataFormat
numberOfHMetrics = currentFontFile.getNextUint16(); //261
}
}
public Hhea() {
}
public int getNumberOfHMetrics() {
return numberOfHMetrics;
}
/**
* returns the value of given int number of variable
*
* @param key is the key value
* @return value of the variable
*/
public int getIntValue(final int key) {
switch (key) {
case VERSION:
return version;
case ASCENDER:
return ascender;
case DESCENDER:
return descender;
case LINEGAP:
return lineGap;
case ADVANCEWIDTHMAX:
return advancedWidthMax;
case MINIMUMLEFTSIDEBEARING:
return minimumLeftSideBearing;
case MINIMUMRIGHTSIDEBEARING:
return minimumRightSideBearing;
case XMAXEXTENT:
return xMaxExtent;
case CARETSLOPERISING:
return caretSlopeRise;
case CARETSLOPERUN:
return caretSlopeRun;
case CARETOFFSET:
return caretOffset;
case METRICDATAFORMAT:
return metricDataFormat;
case NUMBEROFMETRICS:
return numberOfHMetrics;
default:
return 0;
}
}
}