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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
*
* ---------------
* FunctionFactory.java
* ---------------
*/
package org.jpedal.function;
import org.jpedal.io.*;
import org.jpedal.objects.raw.PdfDictionary;
import org.jpedal.objects.raw.FunctionObject;
import org.jpedal.objects.raw.PdfObject;
/**
* return the correct PDF function - all implement PDF function interface
*/
public class FunctionFactory {
/**
* Get the correct Function for the shading objct
* @param currentPdfFile :: Current PDF File data
* @return The required function
*/
public static PDFFunction getFunction(final PdfObject functionObj, final PdfObjectReader currentPdfFile) {
PDFFunction newFunction=null;
/**
* get values and handle reference
**/
final byte[] stream=functionObj.getDecodedStream();
final float[] domain=functionObj.getFloatArray(PdfDictionary.Domain);
final float[] range=functionObj.getFloatArray(PdfDictionary.Range);
final int type =functionObj.getInt(PdfDictionary.FunctionType);
final int bits=functionObj.getInt(PdfDictionary.BitsPerSample);
final float[] decode=functionObj.getFloatArray(PdfDictionary.Decode);
final float[] C0=functionObj.getFloatArray(PdfDictionary.C0);
final float[] C1=functionObj.getFloatArray(PdfDictionary.C1);
final int[] size=functionObj.getIntArray(PdfDictionary.Size);
final float[] encode=functionObj.getFloatArray(PdfDictionary.Encode);
final float[] bounds=functionObj.getFloatArray(PdfDictionary.Bounds);
//set order
float N=0;
final float newN=functionObj.getFloatNumber(PdfDictionary.N);
if(newN!=-1) {
N = newN;
}
final byte[][] keys=functionObj.getKeyArray(PdfDictionary.Functions);
int functionCount=0;
if(keys!=null) {
functionCount = keys.length;
}
PDFFunction[] functions=null;
PdfObject function;
if(keys!=null){
final PdfObject[] subFunction=new PdfObject[functionCount];
String id;
for(int i=0;i