[jira] [Updated] (PDFBOX-2949) Rendering to ARGB brings black background

["Tilman Hausherr (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PDFBOX-2949?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tilman Hausherr updated PDFBOX-2949:
------------------------------------
    Attachment: doraargb.png
                dorargb.png
                dora.pdf

> Rendering to ARGB brings black background
> -----------------------------------------
>
>                 Key: PDFBOX-2949
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-2949
>             Project: PDFBox
>          Issue Type: Bug
>    Affects Versions: 2.0.0
>            Reporter: Tilman Hausherr
>         Attachments: dora.pdf, doraargb.png, dorargb.png
>
>
> As reported by [~jon_wu] in the user mailing list... instead of the somewhat long thread, here's code I tried:
> {code}
> try (PDDocument document = PDDocument.load(new File(dir, "dora.pdf")))
>         {
>             PDFRenderer pdfRenderer = new PDFRenderer(document);
>             BufferedImage bim = pdfRenderer.renderImageWithDPI(0, 300, ImageType.RGB);
>             ImageIO.write(bim, "png", new File(dir, "dorargb.png"));
>             bim = pdfRenderer.renderImageWithDPI(0, 300, ImageType.ARGB);
>             ImageIO.write(bim, "png", new File(dir, "doraargb.png"));
>         }
> {code}
> PDFRenderer has this:
> {code}
>         Graphics2D g = image.createGraphics();
>         if (imageType != ImageType.ARGB)
>         {
>             g.setBackground(Color.WHITE);
>         }
> {code}
> We could just remove the line with the "if" and the braces. The question is, is the current behaviour a fault or a feature?



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