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Posted to dev@pdfbox.apache.org by "Tilman Hausherr (Jira)" <ji...@apache.org> on 2023/02/18 04:23:00 UTC

[jira] [Resolved] (PDFBOX-5567) Font gets smaller for each rendered page

     [ https://issues.apache.org/jira/browse/PDFBOX-5567?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tilman Hausherr resolved PDFBOX-5567.
-------------------------------------
      Assignee: Tilman Hausherr
    Resolution: Fixed

Thank you [~Schmidor] for your report and solution!

> Font gets smaller for each rendered page
> ----------------------------------------
>
>                 Key: PDFBOX-5567
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-5567
>             Project: PDFBox
>          Issue Type: Bug
>          Components: Rendering
>    Affects Versions: 2.0.27, 3.0.0 PDFBox
>            Reporter: Oliver Schmidtmer
>            Assignee: Tilman Hausherr
>            Priority: Major
>             Fix For: 2.0.28, 3.0.0 PDFBox
>
>         Attachments: Rechnung_001 (1).pdf, image-2023-02-17-20-06-11-031.png, image-2023-02-17-20-06-41-326.png
>
>
> Every time the page in the attached document is re-rendered, the font gets smaller.
> First rendering:
>  !image-2023-02-17-20-06-11-031.png! 
> Second rendering:
>  !image-2023-02-17-20-06-41-326.png! 
> Reloading the complete document resets the font size.
> This is probably caused in TTFGlyph2D.getPathForGID
> The problematic text rendering uses scaling,
> so the path gotten in the line
> {code:java}
> GeneralPath glyph = vectorFont.getPath(code);
> {code}
> is rescaled in
> {code:java}
>                 if (hasScaling)
>                 {
>                     AffineTransform atScale = AffineTransform.getScaleInstance(scale, scale);
>                     glyphPath.transform(atScale);
>                 }
> {code}
> This should probably be done on a cloned path.



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