Petr Slaby created PDFBOX-2104:
----------------------------------
Summary: Implement transparency groups
Key: PDFBOX-2104
URL: https://issues.apache.org/jira/browse/PDFBOX-2104
Project: PDFBox
Issue Type: Improvement
Components: Rendering
Affects Versions: 2.0.0
Reporter: Petr Slaby
The attached PDF uses transparency groups, blending and soft masks to create
the rounded corners and shades behind images. It appears that these features
are not implemented in PDFBox. An implementation proposal is attached in the
TransparencyGroup.patch. The basic idea is to create a buffered image, draw the
transparency group content onto it and then use the result to produce the soft
mask or draw the image on the original g2d.
Note: I am not the (only) author of the proposed change. It was developed in
our company few years ago in sources based on a 1.7.x version of PDFBox, mostly
by a guy who already left. Over the years, merging of the work done in PDFBox
main stream into our source base has become impossible due to many refactorings
and other deep going changes done. Now we would like to go the opposite way -
where possible - bring the changes and fixes we have done into PDFBox main
stream and start to use it in our installations.
--
This message was sent by Atlassian JIRA
(v6.2#6252)
