[xep-support] Implementation of overlayed absolutely positioned blocks

[W. Eliot Kimber]

Here is an FO sample that overlays one block on another. When I render 
this with XSL Formatter, the two blocks are overlayed such that their 
before-start corners are at the same position.

When I render with XEP 3.02 the overlayed block is aligned with the 
before and start edges of the page.

I believe that the XSL Formatter behavior is correct per the XSL 1.0 spec.

Thanks,

Eliot.

FO Instance:

<?xml version="1.0" encoding="UTF-8"?>
<fo:root
xmlns:axf="http://www.antennahouse.com/names/XSL/Extensions" 
xmlns:saxon="http://icl.com/saxon" 
xmlns:fo="http://www.w3.org/1999/XSL/Format">
<fo:layout-master-set>
<fo:simple-page-master page-height="11in" margin-right="1.25in" 
margin-top="0.25in" margin-left="1in" master-name="title-page" 
margin-bottom="0.25in" page-width="8.5in">
<fo:region-body region-name="main" margin-top="1in" margin-bottom="1in"/>
<fo:region-before region-name="header" extent="2in"/>
<fo:region-after region-name="footer" 
extent="1.5in"/></fo:simple-page-master>
<fo:simple-page-master page-height="11in" margin-right="1.25in" 
margin-top="0.25in" margin-left="1in" master-name="main" 
margin-bottom="0.25in" page-width="8.5in"><fo:region-body 
region-name="main" margin-top="1in" 
margin-bottom="1in"/><fo:region-before region-name="header" 
extent="2in"/><fo:region-after region-name="footer" 
extent="0.5in"/></fo:simple-page-master><fo:page-sequence-master 
master-name="title"><fo:repeatable-page-master-reference 
master-reference="title-page"/></fo:page-sequence-master><fo:page-sequence-master 
master-name="body"><fo:repeatable-page-master-reference 
master-reference="main"/></fo:page-sequence-master></fo:layout-master-set>
<fo:page-sequence master-reference="body"><fo:flow flow-name="main" 
font-size="10pt" line-height="12pt" 
font-family="Helvetica"><fo:block><fo:block break-before="page" 
font-family="Helvetica">
<fo:block>
<fo:block-container>
<fo:block><fo:external-graphic content-width="scale-to-fit" 
src="url(graphics/graphic-test-01.eps)"/>
</fo:block>
<fo:block-container absolute-position="absolute" 
reference-orientation="90" block-progression-dimension="6in" 
inline-progression-dimension="4in"
text-align="center" display-align="center"
border-style="solid" border-width="1pt" border-color="red">
<fo:block color="red" font-size="24pt" line-height="110%">
This is overlay text
</fo:block>
</fo:block-container>
</fo:block-container>
</fo:block>
</fo:block>
</fo:block>
</fo:flow>
</fo:page-sequence>
</fo:root>
-- 
W. Eliot Kimber, eliot at isogen.com
Consultant, ISOGEN International

1016 La Posada Dr., Suite 240
Austin, TX  78752 Phone: 512.656.4139



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