org.jpedal.fonts.tt.FontFile2 Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of OpenViewerFX Show documentation
Show all versions of OpenViewerFX Show documentation
An Open Source JavaFX PDF Viewer
/*
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.idrsolutions.com
* Help section for developers at http://www.idrsolutions.com/support/
*
* (C) Copyright 1997-2015 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
*
* ---------------
* FontFile2.java
* ---------------
*/
package org.jpedal.fonts.tt;
import org.jpedal.fonts.objects.FontData;
import java.io.Serializable;
import java.util.ArrayList;
/**
* @author markee
*
* To change the template for this generated type comment go to
* Window - Preferences - Java - Code Generation - Code and Comments
*/
@SuppressWarnings("UnusedDeclaration")
public class FontFile2 implements Serializable{
private static final long serialVersionUID = -3097990864237320960L;
public static final int HEAD=0;
public static final int MAXP =1;
public static final int CMAP=2;
public static final int LOCA=3;
public static final int GLYF=4;
public static final int HHEA=5;
public static final int HMTX=6;
public static final int NAME=7;
public static final int POST=8;
public static final int CVT=9;
public static final int FPGM=10;
public static final int HDMX=11;
public static final int KERN=12;
public static final int OS2=13;
public static final int PREP=14;
public static final int DSIG=15;
public static final int CFF=16;
public static final int GSUB=17;
public static final int BASE=18;
public static final int EBDT=19;
public static final int EBLC=20;
public static final int GASP=21;
public static final int VHEA=22;
public static final int VMTX=23;
public static final int GDEF=24;
public static final int JSTF=25;
public static final int LTSH=26;
public static final int PCLT=27;
public static final int VDMX=28;
public static final int BSLN=29;
public static final int MORT=30;
public static final int FDSC=31;
public static final int FFTM=32;
public static final int GPOS=33;
public static final int FEAT=34;
public static final int JUST=35;
public static final int PROP=36;
public static final int LCCL=37;
public static final int Zapf=38;
protected static final int tableCount=39;
//location of tables
protected int checksums[][];
protected int tables[][];
protected int tableLength[][];
/**holds embedded font*/
private FontData fontDataAsObject;
private byte[] fontDataAsArray;
private boolean useArray=true;
protected ArrayList tableList=new ArrayList(32);
/**current location in fontDataArray*/
private int pointer;
public static final int OPENTYPE = 1;
public static final int TRUETYPE = 2;
public static final int TTC = 3;
/**subtypes used in conversion*/
public static final int PS=10;
public static final int TTF=11;
protected int subType=PS;
protected int type=TRUETYPE;
//if several fonts, selects which font
public int currentFontID;
private int fontCount=1;
//defaults are for OTF write
protected int numTables=11,searchRange=128,entrySelector=3,rangeShift=48;
public FontFile2(final FontData data){
useArray=false;
this.fontDataAsObject=data;
readHeader();
}
public FontFile2(final byte[] data){
useArray=true;
this.fontDataAsArray=data;
readHeader();
}
public FontFile2(final byte[] data, final boolean ignoreHeaders){
useArray=true;
this.fontDataAsArray=data;
if(!ignoreHeaders) {
readHeader();
}
}
public FontFile2() {
}
/**
* set selected font as a number in TTC
* ie if 4 fonts, use 0,1,2,3
* if less than fontCount. Otherwise does
* nothing
*/
public void setSelectedFontIndex(final int currentFontID) {
if(currentFontID32768) {
number -= 65536;
}
pointer += 2;
if(useArray) {
dec = ((fontDataAsArray[pointer] & 0xff) * 256) + (fontDataAsArray[pointer + 1] & 0xff);
} else {
dec = ((fontDataAsObject.getByte(pointer) & 0xff) * 256) + (fontDataAsObject.getByte(pointer + 1) & 0xff);
}
pointer += 2;
return (number+(dec/65536f));
}
/**
* get a pascal string
*/
public String getString() {
final int length;
//catch bug in odd file
if(useArray && pointer==fontDataAsArray.length) {
return "";
}
if(useArray) {
length = fontDataAsArray[pointer] & 255;
} else {
length = fontDataAsObject.getByte(pointer) & 255;
}
final char[] chars=new char[length];
//StringBuilder value=new StringBuilder();
//value.setLength(length);
pointer++;
for(int i=0;i=fontDataAsArray.length) {
i = length;
}
}
return String.copyValueOf(chars);
//return value.toString();
}
/**
* get a pascal string
*/
public byte[] getStringBytes() {
final int length;
//catch bug in odd file
if(useArray && pointer==fontDataAsArray.length) {
return new byte[1];
}
if(useArray) {
length = fontDataAsArray[pointer] & 255;
} else {
length = fontDataAsObject.getByte(pointer) & 255;
}
final byte[] value=new byte[length];
pointer++;
for(int i=0;i=fontDataAsArray.length) {
i = length;
}
}
return value;
}
public float getF2Dot14() {
final int firstValue;
if(useArray) {
firstValue = ((fontDataAsArray[pointer] & 0xff) << 8) + (fontDataAsArray[pointer + 1] & 0xff);
} else {
firstValue = ((fontDataAsObject.getByte(pointer) & 0xff) << 8) + (fontDataAsObject.getByte(pointer + 1) & 0xff);
}
pointer += 2;
if(firstValue==49152){
return -1.0f;
}else if(firstValue==16384){
return 1.0f;
}else{
return (firstValue - (2 * (firstValue & 32768))) / 16384f;
}
}
public byte[] readBytes(final int startPointer, final int length) {
if(useArray){
final byte[] block=new byte[length];
System.arraycopy(fontDataAsArray,startPointer,block,0,length);
return block;
}else {
return fontDataAsObject.getBytes(startPointer, length);
}
}
public byte[] getTableBytes(final int tableID){
final int startPointer=tables[tableID][currentFontID];
int length= tableLength[tableID][currentFontID];
if(useArray){
if (fontDataAsArray.length - startPointer < length) {
length = fontDataAsArray.length - startPointer;
}
final byte[] block=new byte[length];
System.arraycopy(fontDataAsArray,startPointer,block,0,length);
return block;
}else {
return fontDataAsObject.getBytes(startPointer, length);
}
}
//number of fonts - 1 for Open/True, can be more for TTC
public int getFontCount() {
return fontCount;
}
/**
* used to test if table too short so need to stop reading
* @return
*/
public boolean hasValuesLeft() {
final int size;
if(useArray) {
size = fontDataAsArray.length;
} else {
size = fontDataAsObject.length();
}
return pointer