[xep-support] Re: How do I use bleeds

At 2014-09-15 10:22 -0500, Daniel Boughton wrote:
>One of our customers sent us background images
>for there documents which are 8.75" x 11.25"
>including a 1/8" bleed so that the finished page
>size is 8.5" x 11". Â I have tried several
>scenarios and I cannot get the effect I am looking for. Â
>
>If I define my page size as 8.5" x 11" with a
>1/8" bleed, I also have to use a negative 1/8"
>horizontal and vertical position on the
>background to get it centered on the page. Â
>This is close, but I actually want the contents
>of the image to "spill" into the bleed area so
>that when the page is trimmed there is no chance
>of white space showing up on the borders of the page.
>
>I also tried defining my page size as 8.75" x
>11.25" and used a negative 1/8" bleed. Â The
>problem is that XEP trimmed the image in the
>bleed area so we still run the risk of getting
>white edges on the document when it gets
>trimmed. Does anyone know if there is a way to
>get XEP to leave the image alone in the bleed area?

The following code will work, but it is not
portable to other XSL-FO processors:

<?xml version="1.0" encoding="US-ASCII"?><!--bleed.fo-->
<root xmlns="http://www.w3.org/1999/XSL/Format"
       font-family="Times" font-size="20pt">

   <layout-master-set>
     <simple-page-master master-name="frame"
                         page-height="11.25in" page-width="8.75in">
       <region-body region-name="frame-body"
                         margin-top=".125in" margin-bottom=".125in"
                         margin-left=".125in" margin-right=".125in"/>
       <region-end region-name="frame-end" extent="8.75in"
                    background-image='url("harbour.jpg")'/>
     </simple-page-master>
   </layout-master-set>

   <page-sequence master-reference="frame">
     <flow flow-name="frame-body">
       <block>This is a test</block>
       <block>This is a test</block>
       <block>This is a test</block>
       <block>This is a test</block>
       <block>This is a test</block>
     </flow>
   </page-sequence>
</root>

It happens that XEP places the perimeter regions
on the page before placing the body region on the
page and so the body region shows on top. Other
processors place the perimeter regions after the
body region and so the above approach doesn't
work because the end region's background obscures the body region.

The specification does not prescribe a Z-level
for regions and so all processors are conformant
in this regard regardless of their choice of order.

In the above the body useable area is 8.5x11
within the margins, but the end region is the
full page size and thus occupies the edge for the
bleed. Note that I chose the end region just
because it is a region I seldom use and I can
focus on the before/after regions for
headers/footers (while accommodating the bleed
space!) without thinking about their backgrounds.

I hope this helps.

. . . . . . . . . Ken

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