Re: [XSL-FO] Waht is default / what determines z-index of xsl-regions / static content?

[Mike Trotman <mi...@datalucid.com>]

Thanks Chris.

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 
when I'm
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 
script
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 
the region.
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 <mi...@datalucid.com>
>>
>>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 
>been implemented.
>
>  
>
>>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
>
>Chris
>
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Re: [XSL-FO] Waht is default / what determines z-index of xsl-regions / static content?

["J.Pietschmann" <j3...@yahoo.de>]

Glen Mazza wrote:
> implementation-dependent.  Currently, the
> fo:region-body has coded precedence in 1.0 I believe.

Well, if "precedence" means "static content is draw on
top of the body" then this is correct.

J.Pietschmann


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Re: [XSL-FO] Waht is default / what determines z-index of xsl-regions / static content?

[Glen Mazza <gr...@yahoo.com>]

--- Mike Trotman <mi...@datalucid.com> wrote:
> 
> 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 believe you're correct on this--the spec is vague on
this point, so you should take this issue as
implementation-dependent.  Currently, the
fo:region-body has coded precedence in 1.0 I believe.

Glen



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