Converting pptx to pdf

[Jessy Ping <te...@gmail.com>]

HI all,

I am trying to convert pptx file containing a custom theme and two text
boxes to pdf. I am able to convert into PDF, but the theme  size is reduced
and the two text box is printed on a white background.Any insights will be
helpful.
Code below,

static void convertToPdf(String fileName) throws IOException,
DocumentException {
>     FileInputStream inputStream = new FileInputStream(pptLocation + fileName + PPT);
>     double zoom = 2;
>     AffineTransform at = new AffineTransform();
>     at.setToScale(zoom, zoom);
>     Document pdfDocument = new Document();
>     PdfWriter pdfWriter = PdfWriter.getInstance(pdfDocument, new FileOutputStream(pdfLocation + fileName + PDF));
>     PdfPTable table = new PdfPTable(1);
>     pdfWriter.open();
>     pdfDocument.open();
>     Dimension pgsize = null;
>     Image slideImage = null;
>     BufferedImage img = null;
>
>
>     XMLSlideShow ppt = new XMLSlideShow(inputStream);
>     pgsize = ppt.getPageSize();
>     List<XSLFSlide> slides = ppt.getSlides();
>     pdfDocument.setPageSize(new Rectangle((float) pgsize.getWidth(), (float) pgsize.getHeight()));
>     pdfWriter.open();
>     pdfDocument.open();
>     for (int i = 0; i < slides.size(); i++) {
>         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));
>         slides.get(i).draw(graphics);
>         graphics.getPaint();
>         slideImage = Image.getInstance(img, null);
>         table.addCell(new PdfPCell(slideImage, false));
>
>     }
>     pdfDocument.add(table);
>     pdfDocument.close();
>     pdfWriter.close();
>
> }
>
>

Re: Converting pptx to pdf

[Andreas Beeker <ki...@apache.org>]

Hi Jessy,

here a few points about this issue:
* PDF support is relatively new and there are a few/lot (?) of cases which work differently opposed to PPTX->PNG
* I can have a look at your input file and try to figure out what's wrong - either send it to the list or to me privately
* Cascaded properties from themes are a source of errors - POIs handling is a bit shirtsleeved in this area
* Please try out the convenience tool PPTX2PNG (http://poi.apache.org/components/slideshow/ppt-wmf-emf-renderer.html)
* Also check the nightly - description about how to use the nightly is also in the above link. In case I fix something, it would be cool, if you could verify it

Andi


On 29.05.21 12:41, Jessy Ping wrote:
> HI all,
>
> I am trying to convert pptx file containing a custom theme and two text
> boxes to pdf. I am able to convert into PDF, but the theme  size is reduced
> and the two text box is printed on a white background.Any insights will be
> helpful.
> Code below,
>
> static void convertToPdf(String fileName) throws IOException,
> DocumentException {
>>      FileInputStream inputStream = new FileInputStream(pptLocation + fileName + PPT);
>>      double zoom = 2;
>>      AffineTransform at = new AffineTransform();
>>      at.setToScale(zoom, zoom);
>>      Document pdfDocument = new Document();
>>      PdfWriter pdfWriter = PdfWriter.getInstance(pdfDocument, new FileOutputStream(pdfLocation + fileName + PDF));
>>      PdfPTable table = new PdfPTable(1);
>>      pdfWriter.open();
>>      pdfDocument.open();
>>      Dimension pgsize = null;
>>      Image slideImage = null;
>>      BufferedImage img = null;
>>
>>
>>      XMLSlideShow ppt = new XMLSlideShow(inputStream);
>>      pgsize = ppt.getPageSize();
>>      List<XSLFSlide> slides = ppt.getSlides();
>>      pdfDocument.setPageSize(new Rectangle((float) pgsize.getWidth(), (float) pgsize.getHeight()));
>>      pdfWriter.open();
>>      pdfDocument.open();
>>      for (int i = 0; i < slides.size(); i++) {
>>          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));
>>          slides.get(i).draw(graphics);
>>          graphics.getPaint();
>>          slideImage = Image.getInstance(img, null);
>>          table.addCell(new PdfPCell(slideImage, false));
>>
>>      }
>>      pdfDocument.add(table);
>>      pdfDocument.close();
>>      pdfWriter.close();
>>
>> }
>>
>>


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