DO NOT REPLY [Bug 45027] Color 'blue' does not render correctly when 'fo: external-graphic' is present

[bu...@apache.org]

https://issues.apache.org/bugzilla/show_bug.cgi?id=45027


Jeremias Maerki <je...@apache.org> changed:

           What    |Removed                     |Added
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             Status|NEEDINFO                    |ASSIGNED




--- Comment #7 from Jeremias Maerki <je...@apache.org>  2008-06-02 09:04:22 PST ---
Thanks for the test files. I can now reproduce the effect. This is really
strange. What I can tell you is that the text painting code in PDF doesn't
change if I remove the opacity from the rectangle being painted AFTER the text.
But what's important to note is that I've seen the effect only on Acrobat 8 but
not on Acrobat 5 or GhostScript/GhostView. At the moment I have absolutely no
clue why this happens. I'm attaching the two PDF files (with compression turned
off) to demonstrate the difference. Maybe someone could check if the effect
occurs on other Acrobat versions like 6 or 7 and report back here.

As a side-note: It's a bit strange that Batik paints the transparent rectangle
as a bitmap as this is such a simple element. That could probably be improved
somehow. That accounts for the increase in size when opacity is turned used,
but it doesn't explain why the text color changes to a darker blue. There's
also an inconsistency about how the coordinate system for the rectangle is set
up between the two variants. But again, this doesn't account for the color
change.


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