Mark Williams wrote:
I don't know if this is an xsl problem or a fop problem. What I am first
trying to establish is what should be the default xsl behaviour for a
transparent png in this context. Should the grey background underneath show
through the transparent sections of the png?
XSLFO doesn't go into much of a detail when it comes to handling
external graphics. Basically, it states "processor specific".
Well, PDF can handle transparent PNG, and I thought Jimi (used
by FOP) is able to transform PNG with alpha channel into the
corresponding PDF data. You might have hit a PNG subformat which
isn't supported by Jimi (it's old), or a bug. Try converting
the PNG into a GIF first and see whether it works, or into
another PNG subformat (preferably 16 bit color).
J.Pietschmann
XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list