Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
/*
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.idrsolutions.com
* Help section for developers at http://www.idrsolutions.com/support/
*
* (C) Copyright 1997-2016 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
*
* ---------------
* PDFtoImageConvertor.java
* ---------------
*/
package org.jpedal.parser;
import java.awt.Graphics2D;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import org.jpedal.PdfDecoderInt;
import org.jpedal.display.GUIModes;
import org.jpedal.exception.PdfException;
import org.jpedal.external.ExternalHandlers;
import org.jpedal.io.ObjectStore;
import org.jpedal.io.PdfObjectReader;
import org.jpedal.objects.PdfPageData;
import org.jpedal.objects.PdfResources;
import org.jpedal.objects.acroforms.AcroRenderer;
import org.jpedal.objects.raw.PageObject;
import org.jpedal.objects.raw.PdfDictionary;
import org.jpedal.objects.raw.PdfObject;
import org.jpedal.parser.swing.PDFtoImageConvertorSwing;
import org.jpedal.render.DynamicVectorRenderer;
/**
*
*/
public abstract class PDFtoImageConvertor {
//non-static version
private final Integer instance_bestQualityMaxScaling;
final Boolean instance_allowPagesSmallerThanPageSize;
final DecoderOptions options;
/**custom upscale val for JPedal settings*/
public float multiplyer = 1;
//force to generate images smaller than page size
public static Boolean allowPagesSmallerThanPageSize=Boolean.FALSE;
//stop scaling to silly figures
public static Integer bestQualityMaxScaling;
public DynamicVectorRenderer imageDisplay;
public AffineTransform imageScaling;
public int mediaH,w,h;
public int rotation;
public double crw,crh,crx,cry;
public boolean rotated;
// Temporarily lock FX out of form rendering (breaks thumbnail generation)
protected boolean isFX;
public PDFtoImageConvertor(final float multiplyer, final DecoderOptions options) {
this.multiplyer=multiplyer;
this.instance_allowPagesSmallerThanPageSize=options.getInstance_allowPagesSmallerThanPageSize();
this.instance_bestQualityMaxScaling=options.getInstance_bestQualityMaxScaling();
this.options = options;
}
public BufferedImage convert(final DecoderResults resultsFromDecode, final int displayRotation, final PdfResources res,
final ExternalHandlers externalHandlers, final int renderMode, final PdfPageData pageData,
final AcroRenderer formRenderer, final float scaling, final PdfObjectReader currentPdfFile, final int pageIndex,
final boolean imageIsTransparent,
final String currentPageOffset) throws PdfException {
final ObjectStore localStore = new ObjectStore();
/* read page or next pages */
final PdfObject pdfObject=new PageObject(currentPageOffset);
currentPdfFile.readObject(pdfObject);
currentPdfFile.checkParentForResources(pdfObject);
//ensure set (needed for XFA)
pdfObject.setPageNumber(pageIndex);
final PdfObject Resources=pdfObject.getDictionary(PdfDictionary.Resources);
imageDisplay=getDisplay(pageIndex, localStore,imageIsTransparent);
if(!imageDisplay.isHTMLorSVG()){
if(options.getPageColor()!=null) {
imageDisplay.setValue(DynamicVectorRenderer.ALT_BACKGROUND_COLOR, options.getPageColor().getRGB());
}
if(options.getTextColor()!=null){
imageDisplay.setValue(DynamicVectorRenderer.ALT_FOREGROUND_COLOR, options.getTextColor().getRGB());
if(options.getChangeTextAndLine()) {
imageDisplay.setValue(DynamicVectorRenderer.FOREGROUND_INCLUDE_LINEART, 1);
} else {
imageDisplay.setValue(DynamicVectorRenderer.FOREGROUND_INCLUDE_LINEART, 0);
}
imageDisplay.setValue(DynamicVectorRenderer.COLOR_REPLACEMENT_THRESHOLD, options.getReplacementColorThreshold());
}
//Method accepts int so use 1 for true and 0 for false
if (options.isEnhanceFractionalLines()) {
imageDisplay.setValue(DynamicVectorRenderer.ENHANCE_FRACTIONAL_LINES, 1);
} else {
imageDisplay.setValue(DynamicVectorRenderer.ENHANCE_FRACTIONAL_LINES, 0);
}
}else{
imageDisplay.setValue(DynamicVectorRenderer.ENHANCE_FRACTIONAL_LINES, 0);
}
final PdfStreamDecoder currentImageDecoder = formRenderer.getStreamDecoder(currentPdfFile,null,true);
currentImageDecoder.setParameters(true, true, renderMode, PdfDecoderInt.TEXT,false,externalHandlers.getMode().equals(GUIModes.JAVAFX));
externalHandlers.addHandlers(currentImageDecoder);
//currentImageDecoder.setObjectValue(ValueTypes.Name, filename);
currentImageDecoder.setObjectValue(ValueTypes.ObjectStore,localStore);
currentImageDecoder.setMultiplyer(multiplyer);
currentImageDecoder.setObjectValue(ValueTypes.PDFPageData,pageData);
currentImageDecoder.setIntValue(ValueTypes.PageNum, pageIndex);
currentImageDecoder.setRenderer(imageDisplay);
externalHandlers.addHandlers(currentImageDecoder);
res.setupResources(currentImageDecoder, true, Resources,pageIndex,currentPdfFile);
//can for max
if(multiplyer==-2){
multiplyer=-1;
currentImageDecoder.setMultiplyer(multiplyer);
final PdfStreamDecoderForSampling currentImageDecoder2 = new PdfStreamDecoderForSampling(currentPdfFile);
currentImageDecoder2.setParameters(true, true, renderMode,0,false,externalHandlers.getMode().equals(GUIModes.JAVAFX));
//currentImageDecoder2.setObjectValue(ValueTypes.Name, filename);
currentImageDecoder2.setObjectValue(ValueTypes.ObjectStore,localStore);
currentImageDecoder2.setMultiplyer(multiplyer);
currentImageDecoder2.setObjectValue(ValueTypes.PDFPageData,pageData);
currentImageDecoder2.setIntValue(ValueTypes.PageNum, pageIndex);
currentImageDecoder2.setRenderer(imageDisplay);
res.setupResources(currentImageDecoder2, true, Resources,pageIndex,currentPdfFile);
externalHandlers.addHandlers(currentImageDecoder2);
/* bare minimum to get value*/
multiplyer=currentImageDecoder2.decodePageContentForImageSampling(pdfObject);
int bestQualityMaxScalingToUse = 0;
if(instance_bestQualityMaxScaling != null) {
bestQualityMaxScalingToUse = instance_bestQualityMaxScaling;
} else if (bestQualityMaxScaling != null) {
bestQualityMaxScalingToUse = bestQualityMaxScaling;
}
if (bestQualityMaxScalingToUse > 0 && multiplyer > bestQualityMaxScalingToUse) {
multiplyer = bestQualityMaxScalingToUse;
}
currentImageDecoder2.setMultiplyer(multiplyer);
currentImageDecoder.setMultiplyer(multiplyer);
}
if(!allowPagesSmallerThanPageSize &&
!instance_allowPagesSmallerThanPageSize &&
multiplyer<1 && multiplyer>0) {
multiplyer = 1;
}
//allow for value not set
if(multiplyer==-1) {
multiplyer = 1;
}
/*
* setup positions,transformations and image
*/
imageScaling = PDFtoImageConvertorSwing.setPageParametersForImage(scaling*multiplyer, pageIndex,pageData);
setParams(scaling, pageData, pageIndex);
final BufferedImage image=pageToImage(imageIsTransparent,currentImageDecoder,scaling,pdfObject,formRenderer);
resultsFromDecode.update(currentImageDecoder, false);
/*
* draw acroform data onto Panel
*/
if (formRenderer != null && formRenderer.hasFormsOnPage(pageIndex) && !formRenderer.ignoreForms()) {
resultsFromDecode.resetColorSpaces();
if(!formRenderer.getCompData().hasformsOnPageDecoded(pageIndex)){
formRenderer.createDisplayComponentsForPage(pageIndex,currentImageDecoder);
}
if(isFX){
//done in fx image code
}else if (!formRenderer.getCompData().formsRasterizedForDisplay()) {
if (!formRenderer.useXFA()) {
java.util.List[] formsOrdered = formRenderer.getCompData().getFormList(true);
//get unsorted components and iterate over forms
for (Object nextVal : formsOrdered[pageIndex]) {
if (nextVal != null) {
formRenderer.getFormFlattener().drawFlattenedForm(currentImageDecoder, (PdfObject) nextVal, false, (PdfObject) formRenderer.getFormResources()[0]);
}
}
} else {
Graphics2D g2 = (Graphics2D)image.getGraphics();
g2.scale(imageScaling.getScaleX(), -imageScaling.getScaleY());
formRenderer.getCompData().renderFormsOntoG2(g2, pageIndex, 0, displayRotation, null, null, pageData.getMediaBoxHeight(pageIndex));
}
} else {
final java.util.List[] formsOrdered=formRenderer.getCompData().getFormList(true);
//get unsorted components and iterate over forms
for (final Object nextVal : formsOrdered[pageIndex]) {
if (nextVal !=null) {
formRenderer.getFormFlattener().drawFlattenedForm(currentImageDecoder, (PdfObject) nextVal, false, (PdfObject) formRenderer.getFormResources()[0]);
}
}
}
}
if(currentImageDecoder!=null){
currentImageDecoder.dispose();
}
localStore.flush();
return image;
}
public float getMultiplyer() {
return multiplyer;
}
public DynamicVectorRenderer getDisplay(final int pageIndex, final ObjectStore localStore, boolean isTransparent) {
throw new UnsupportedOperationException(this+" Code should never be called ");
}
public BufferedImage pageToImage(final boolean imageIsTransparent, final PdfStreamDecoder currentImageDecoder, final float scaling,
final PdfObject pdfObject,final AcroRenderer formRenderer) throws PdfException {
throw new UnsupportedOperationException(this+" Code should never be called ");
}
public void setParams(final float scaling, final PdfPageData pageData, final int pageIndex) {
//include scaling in size
mediaH = (int) (scaling*pageData.getMediaBoxHeight(pageIndex));
rotation = pageData.getRotation(pageIndex);
crw = (scaling*pageData.getCropBoxWidth2D(pageIndex));
crh = (scaling*pageData.getCropBoxHeight2D(pageIndex));
crx = (scaling*pageData.getCropBoxX(pageIndex));
cry = (scaling*pageData.getCropBoxY(pageIndex));
if ((rotation == 90) || (rotation == 270)) {
h = (int) (crw*multiplyer); // * scaling);
w = (int) (crh*multiplyer); // * scaling);
rotated = true;
} else {
w = (int) (crw*multiplyer); // * scaling);
h = (int) (crh*multiplyer); // * scaling);
}
}
}
