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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 1997-2017 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
*
* ---------------
* DO.java
* ---------------
*/
package org.jpedal.parser.image;
import java.awt.image.BufferedImage;
import org.jpedal.exception.PdfException;
import org.jpedal.external.ErrorTracker;
import org.jpedal.external.ImageHandler;
import org.jpedal.io.ObjectStore;
import org.jpedal.io.PdfObjectReader;
import org.jpedal.objects.PdfImageData;
import org.jpedal.objects.PdfPageData;
import org.jpedal.objects.raw.PdfObject;
import org.jpedal.utils.LogWriter;
public class DO extends ImageDecoder {
public DO(final int imageCount, final PdfObjectReader currentPdfFile, final ErrorTracker errorTracker, final ImageHandler customImageHandler, final ObjectStore objectStoreStreamRef, final PdfImageData pdfImages, final PdfPageData pageData, final String imagesInFile) {
super(imageCount, currentPdfFile, errorTracker, customImageHandler, objectStoreStreamRef, pdfImages, pageData, imagesInFile);
}
/**
* process image in XObject (XForm handled in PdfStreamDecoder)
*/
@Override
public int processImage(final String name, final int dataPointer, final PdfObject XObject) throws PdfException {
//set if we need
String key = null;
if (ImageCommands.rejectSuperimposedImages) {
key = ((int) gs.CTM[2][0]) + "-" + ((int) gs.CTM[2][1]) + '-'
+ ((int) gs.CTM[0][0]) + '-' + ((int) gs.CTM[1][1]) + '-'
+ ((int) gs.CTM[0][1]) + '-' + ((int) gs.CTM[1][0]);
}
try {
// Internal tests can disable images to speed up conversion
if (System.getProperty("testsDisableImages") == null) {
processXImage(name, name, key, XObject);
}
} catch (final Error e) {
LogWriter.writeLog("Error: " + e.getMessage());
parserOptions.imagesProcessedFully=false;
errorTracker.addPageFailureMessage("Error " + e + " in DO");
} catch (final Exception e) {
LogWriter.writeLog("Exception " + e);
parserOptions.imagesProcessedFully=false;
errorTracker.addPageFailureMessage("Error " + e + " in DO");
}
return dataPointer;
}
private void processXImage(final String name, String details, final String key, final PdfObject XObject) throws PdfException {
final int previousUse = -1;
if(ImageCommands.trackImages){
details += " Image";
if(imagesInFile==null) {
imagesInFile = "";
}
}
final boolean isForHTML= current.isHTMLorSVG();
/*don't process unless needed*/
if (parserOptions.imagesNeeded()) {
//read stream for image
final byte[] objectData= currentPdfFile.readStream(XObject, true, true, false, false, false, XObject.getCacheName(currentPdfFile.getObjectReader()));
//flag issue
if(objectData==null){
parserOptions.imagesProcessedFully=false;
}else{
//generate name including filename to make it unique less /
currentImage = parserOptions.getFileName() + '-' + name;
//process the image and save raw version
BufferedImage image = processImageXObject(XObject, name, objectData, details);
//fix for oddity in Annotation
if (image != null && image.getWidth() == 1 && image.getHeight() == 1 && parserOptions.isType3Font()) {
image.flush();
image = null;
}
//save transformed image
if (image != null) {
if(isForHTML){
current.drawImage(parserOptions.getPageNumber(),image,gs,false,name, -2);
}else{
if(parserOptions.renderImages()){
gs.x = gs.CTM[2][0];
gs.y = gs.CTM[2][1];
final int id = current.drawImage(parserOptions.getPageNumber(), image, gs, false, name, previousUse);
/*
* store last usage in case it reappears unless it is transparent
*/
if (ImageCommands.rejectSuperimposedImages && key != null) {
cache.setImposedKey(key, id);
}
}
if(parserOptions.isPageContent() && ImageCommands.isExtractionAllowed(currentPdfFile)){
if (parserOptions.isClippedImagesExtracted()) {
generateClippedImage(image);
} else if(parserOptions.isFinalImagesExtracted() || parserOptions.isRawImagesExtracted()){
try {
generateTransformedImageSingle(image);
} catch (final Exception e) {
LogWriter.writeLog("Exception " + e + " on transforming image in file");
}
}
}
}
image.flush();
}
}
}
}
}