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From Jan Buschtöns (JIRA) <j...@apache.org>
Subject [jira] [Commented] (PDFBOX-4583) Drawing only a portion of a PDF (Graphics.clip is ignored/overwritten)
Date Mon, 01 Jul 2019 07:38:00 GMT

    [ https://issues.apache.org/jira/browse/PDFBOX-4583?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16875988#comment-16875988
] 

Jan Buschtöns commented on PDFBOX-4583:
---------------------------------------

No, now nothing gets drawn. Both in my original application and in the reproducing project
I attached to this issue.

> Drawing only a portion of a PDF (Graphics.clip is ignored/overwritten)
> ----------------------------------------------------------------------
>
>                 Key: PDFBOX-4583
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-4583
>             Project: PDFBox
>          Issue Type: Bug
>          Components: Rendering
>    Affects Versions: 2.0.15
>            Reporter: Jan Buschtöns
>            Assignee: Tilman Hausherr
>            Priority: Major
>             Fix For: 2.0.17, 3.0.0 PDFBox
>
>         Attachments: clip_PDFBox_FORMGEN-2184-master.zip
>
>
> I want to use PDFBox to draw PDFs in a swing application.
> I want to draw only a portion of the PDF. As far as I know, the way to do this in swing
is with the "clip"-method on the Graphics object. However, no matter what clip I set, the
whole PDF is drawn.
> PDFRenderer calls "setClip", when it probably should use "clip". The latter sets the
current clip to the intersection of the old current clip and the provided shape, whereas the
former resets the current clip
> I've attached an example maven project, but the gist is:
> {code:java}
>           @Override 
>           public void paint(final Graphics g) { 
>  
>               final Graphics2D g2 = (Graphics2D) g; 
>               try { 
>                   PDDocument pdDocument = DDocument.load(App.class.getResourceAsStream("somepdf.pdf"));

>                   g2.clip(new Rectangle(20, 20)); 
>                   final PDFRenderer pdfRenderer = new org.apache.pdfbox.rendering.PDFRenderer(pdDocument);

>                   pdfRenderer.renderPageToGraphics(0, g2); 
>               } catch (final IOException e) { 
>                   throw new RuntimeException(e); 
>               } 
>           }
>   {code}



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