It looks like 'precedence' (when implemented) behaves to alter the
dimensions of the region boundaries.
What I was looking for is - when content overflows the region (and
overflow='visible' - which looks like FOPs default)
into another region - which region is given the higher z-index?
I can't find any mentions of this (but may have missed them) so my
current impression is that this is undefined / implementation dependent.
I'm checking because I want to know when I'm applying a fix for an
incorrect / missing feature (which other renderers may implement) - and
looking for a feature that XSL-FO does not support.
I mentioned the FOP 'background-image' non-use as I need to dynamically
determine the position of logo's etc (for HTML and / or PDF) in a CGI
and FOP doesn't support background-image positioning.
The page sizes will vary and there may be several logos + watermark
text, so I have several elements to layout and using overflow regions
looks like the natural method
(and creating an image of these for each invocation is more programming
and processing than I care to do if it can be avoided.)
(I'm also trying to implement border decorations - for which background
image is suitable.)
FOP (and XEP) currently places region-before content on top of region-body
FOP places region-after on top of region-before.
XEP places region-after under region-before and on top of region-before.
(Incidentally FOP interprets 'top' for region-after to be the start of
XEP interprets 'top' for region-after to be the top of the page area.)
What I want is to place non-region-body content behind region-body.
Chris Bowditch wrote:
>>From: Mike Trotman <mike.trotman@...>
>>What determines the relative z-index layering of content in
>>xsl-region-before, xsl-region-after, xsl-region-body ?
>>If content in these regions overlaps what determines which appears on
>>top and which gets overwritten?
>region-before and region-after have a precedence property that defaults to
>false. Set it to true if you want region-before/after to be on-top of
>start/end in the corners.
>Unfortunately, the FOP compliance page indicates that this property has not
>>Any information / pointers appreciated.
>>(This question was triggered by trying to get underlaid Watermark
>>effects with images / text.
>>I'm using FOP-0.20.5 and so can't achieve the effect I want using
>>'background-image' in the page-master definition).
>Why not? background-image is implemented on fo:region-* elements
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