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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
*
* ---------------
* DO.java
* ---------------
*/
package org.jpedal.parser.image;
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;
import java.awt.image.BufferedImage;
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 int formLevel, final PdfPageData pageData, final String imagesInFile, final String formName) {
super(imageCount, currentPdfFile, errorTracker, customImageHandler, objectStoreStreamRef, pdfImages, formLevel, pageData, imagesInFile, formName);
}
/**
* process image in XObject (XForm handled in PdfStreamDecoder)
*/
@Override
public int processImage(String name, final int dataPointer, final PdfObject XObject) throws PdfException {
//name is not unique if in form so we add form level to separate out
if(formLevel>0) {
name = formName + '_' + formLevel + '_' + name;
}
//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 (renderImages || finalImagesExtracted || clippedImagesExtracted || rawImagesExtracted) {
//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, false, details);
//fix for oddity in Annotation
if (image != null && image.getWidth() == 1 && image.getHeight() == 1 && isType3Font) {
image.flush();
image = null;
}
//save transformed image
if (image != null) {
if (!isForHTML && (parserOptions.renderDirectly() || useHiResImageForDisplay)) {
gs.x = gs.CTM[2][0];
gs.y = gs.CTM[2][1];
/**save details if we are tracking*/
if(finalImagesExtracted || rawImagesExtracted){
int w=(int)Math.abs(gs.CTM[0][0]);
if(w==0) {
w = (int) Math.abs(gs.CTM[0][1]);
}
int h=(int)Math.abs(gs.CTM[1][1]);
if(h==0) {
h = (int) Math.abs(gs.CTM[1][0]);
}
pdfImages.setImageInfo(currentImage, parserOptions.getPageNumber(), gs.x, gs.y, w, h);
}
if(parserOptions.renderDirectly()){ //in own bit as other code not needed
current.drawImage(parserOptions.getPageNumber(), image, gs, false, name, -1);
}else{
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);
}
}
} else {
if (clippedImagesExtracted || isForHTML) {
generateTransformedImage(image, name);
} else {
try {
generateTransformedImageSingle(image, name);
} catch (final Exception e) {
LogWriter.writeLog("Exception " + e + " on transforming image in file");
}
}
}
image.flush();
}
}
}
}
}