Pfthb

I am an SQL/ETL(PowerCenter)/bash/Python developer with a very little experience in Java. I have a task - I need to take a .pptx template, customize it and convert to a .pdf file. I've decided to start from the second step, so I took this as an example. I've got latest versions of libraries (iText7 and POI4), so I had to modify this code in order to compile it. I was able to find moved packages in an Import part but then I stuck here:

slideImage = Image.getInstance(img, null);

My new libraries say that getInstance is not supported anymore (cannot find symbol). I'm trying to skip this step and use an analogue of

table.addCell(new PdfPCell(slideImage, true));

which I've changed to

table.addCell(new Cell(img, true));

to add this bufferedImage directly to a cell, it throws conversion errors, like "BufferedImage cannot be converted to int). How can I convert BufferedImage to Image? I read that the 1st is a child of the 2nd, so there's no need to convert it, but it doesn't work. Below I'm providing the code adjusted by me. Thank you in advance!

import java.io.FileOutputStream;
import java.io.*;
import java.io.IOException;


import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics2D;
import java.awt.geom.AffineTransform;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

import org.apache.poi.hslf.record.Slide;
import org.apache.poi.sl.usermodel.SlideShow;
import org.apache.poi.xslf.usermodel.XMLSlideShow;
import org.apache.poi.xslf.usermodel.XSLFSlide;

import com.itextpdf.layout.Document;

import com.itextpdf.layout.element.Image;
import com.itextpdf.kernel.geom.Rectangle;
import com.itextpdf.layout.element.Cell;
import com.itextpdf.layout.element.Table;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.geom.PageSize;

public void createPdf(String inFileName, String outFileName)
 throws IOException 

 FileInputStream inputStream = new FileInputStream(inFileName);
 double zoom = 2;
 AffineTransform at = new AffineTransform();
 at.setToScale(zoom, zoom);

 Table table = new Table(1);
 Dimension pgsize = null;
 Image slideImage = null;
 BufferedImage img = null;

 XMLSlideShow ppt = new XMLSlideShow(inputStream);
 pgsize = ppt.getPageSize();

// PDF part
// Initialize PDF writer
 PdfWriter writer = new PdfWriter(outFileName);
// Initialize PDF document
 PdfDocument pdf = new PdfDocument(writer);
// Initialize document
 Rectangle srcPageSize = new Rectangle((float) pgsize.getWidth(), (float) pgsize.getHeight());
 Document doc = new Document(pdf, new PageSize(srcPageSize));

 List<XSLFSlide> slides = ppt.getSlides();
// writer.open();
// pdfDocument.open();
 for (XSLFSlide slide : ppt.getSlides()) 
 img = new BufferedImage((int) Math.ceil(pgsize.width * zoom), (int) Math.ceil(pgsize.height * zoom), BufferedImage.TYPE_INT_RGB);
 Graphics2D graphics = img.createGraphics();
 graphics.setTransform(at);

 graphics.setPaint(Color.white);
 graphics.fill(new Rectangle2D.Float(0, 0, pgsize.width, pgsize.height));
 slide.draw(graphics);
 graphics.getPaint();

// Original start
// slideImage = Image.getInstance(img, null);
// table.addCell(new PdfPCell(slideImage, true));
// Original end


 table.addCell(new Cell(img, true)); 
 
// pdfDocument.add(table);
// pdfDocument.close();
// pdfWriter.close();
 System.out.println("Powerpoint file converted to PDF successfully");

// catch (IOException e) 
// 
// System.err.println("FileStreamsReadnWrite: " + e);
// 

You may try the following , which uses the current API :

// you need to convert the BufferedImage to a byte array
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ImageIO.write(img, "png", baos);

ImageData image = ImageDataFactory.create(baos.toByteArray());

table.addCell(new Image(image));

There are other interesting methods like ImageDataFactory.create(String filename) .