[jira] [Created] (PDFBOX-5450) Create Opaque PDFRenderer example

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

Tilman Hausherr created PDFBOX-5450:
---------------------------------------

             Summary: Create Opaque PDFRenderer example
                 Key: PDFBOX-5450
                 URL: https://issues.apache.org/jira/browse/PDFBOX-5450
             Project: PDFBox
          Issue Type: Improvement
    Affects Versions: 2.0.26
            Reporter: Tilman Hausherr
            Assignee: Tilman Hausherr
             Fix For: 2.0.27, 3.0.0 PDFBox


To solve the troubles from PDFBOX-4123 (low print quality of PDFs with unneeded transparency groups)
As mentioned in the mailing list in [this thread|https://lists.apache.org/list?users@pdfbox.apache.org:2022-3]
{quote}
Both options are related to transparency groups. These are an extension of XObject forms. I thought about ignoring them, i.e. treat them like ordinary forms.
So I looked at PDXobject.createXObject(); this one is called by PDResources.getXObject(), which is called by DrawObject.process(). That one class can officially be replaced if you extend PageDrawer and call "addOperator(new DrawObject());" in the constructor; that class should have  a slightly modified code that does NOT call showTransparencyGroup(), but only showForm() (there are 3 DrawObject classes, copy the one in org.apache.pdfbox.contentstream.operator.graphics). You can extend PageDrawer, but you'll have to extend PDFRenderer as well, see class comment of PageDrawer. 
{quote}
and implemented by [~tresf] in [this commit|https://github.com/qzind/tray/blob/2a275bb729a3cf4b909fd683fbe23f7c1f8d4c2b/src/qz/printer/action/pdf/OpaquePDFRenderer.java].



--
This message was sent by Atlassian Jira
(v8.20.7#820007)

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@pdfbox.apache.org
For additional commands, e-mail: dev-help@pdfbox.apache.org