DO NOT REPLY [Bug 28842] New: - FOP SVG2PDF Transcoder: Opacity attributes supporting issue

[bu...@apache.org]

DO NOT REPLY TO THIS EMAIL, BUT PLEASE POST YOUR BUG 
RELATED COMMENTS THROUGH THE WEB INTERFACE AVAILABLE AT
<http://issues.apache.org/bugzilla/show_bug.cgi?id=28842>.
ANY REPLY MADE TO THIS MESSAGE WILL NOT BE COLLECTED AND 
INSERTED IN THE BUG DATABASE.

http://issues.apache.org/bugzilla/show_bug.cgi?id=28842

FOP SVG2PDF Transcoder: Opacity attributes supporting issue

           Summary: FOP SVG2PDF Transcoder: Opacity attributes supporting
                    issue
           Product: Fop
           Version: all
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: Major
          Priority: Other
         Component: svg
        AssignedTo: fop-dev@xml.apache.org
        ReportedBy: lzhou@actuate.com
                CC: lzhou@actuate.com


When transforming the SVG file with opacity attributes into PDF file, the 
result displays the opacification well, but also with some regular grid lines 
across all the PDF canvas, the colors of those grid lines are just the "real" 
colors of thoes original objects being opacified. 
It is doubtful that this issue was caused by the inaccurate calculation when 
doing the opacification in block based and then blending the result with those 
original objects.

This issue exists in all the recent versions of Fop. The SVG file and 
transformed PDF file are attached as reference.