[xep-support] Re: Fw: external-graphic doesn't fit?!

[Alexander Peshkov]

Hello Brice,

your message bounced from xep-support list because of attachment. Big
attachments are not allowed in our public list. When you need to send us
some files it is recommended to use support at renderx.com

You hit a well known problem here :-) An fo:external-graphic is an
inline-level element. When it is hosted in a block, there is always a
bit of white space before and after each inline element known as
half-leading. It's this space that leads to increased height of the
block-container content and thus to the overflow. It's enough to
specify line-height="0pt" on the block that encloses the image in
order to achieve correct behavior.

However in your case the better technique would be to place
printer-marks.pdf into the region-body background rather then employ
absolutely-positioned container. The following code demonstrates this
approach:

<?xml version="1.0"?>
<fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format">
        <fo:layout-master-set>
                <fo:simple-page-master master-name="main"
                                       page-width="4.42in" page-height="2.92in">
                        <fo:region-body background-image="url('printer-marks.pdf')"
                                        padding-top="((2.92in - 2in) div 2) + 0.165in"
                                        padding-left="((4.42in - 3.5in) div 2) + 0.18in"/>
                </fo:simple-page-master>
        </fo:layout-master-set>
        <fo:page-sequence master-reference="main">
                <fo:flow flow-name="xsl-region-body">
                    <fo:block>
                      <fo:external-graphic src="url('content.pdf')"/>
                    </fo:block>
                </fo:flow>
        </fo:page-sequence>
</fo:root>

(note that I reproduced spacing that appeared in your original code
using region-body padding)

Regarding your question about the best way to "marry" varying data
with static image: the answer depend on the nature of the data.
Since you haven't send us content.pdf I have no idea what kind of
content you are trying to add to your boiler-plate PDF so it's hard to
make any reasoned suggestions. In general you will place boiler-plate
image in the background and then cover it with content which can be
positioned in a number of ways (using margins/paddings, absolute
containers, tables, etc.). 

Best regards,
Alexander Peshkov                             mailto:peshkov at renderx.com
RenderX

P.S.: I'm not the only one responsible for support of XEP but all of
      us have other tasks also.

RB> ----- Original Message -----
RB> From: "Ruth, Brice" <bruth at Fiskars.com>
RB> To: <xep-support at renderx.com>
RB> Sent: Tuesday, June 01, 2004 10:42 PM
RB> Subject: external-graphic doesn't fit?!


RB> I have a simple-page-master setup with a width of 4.42in and height of
RB> 2.92in. I have placed a block-container, absolutely positioned, which
RB> contains an external-graphic (within a block), whose width & height is
RB> exactly 4.42in x 2.92in. Unfortunately, I have to scale the height of
RB> the graphic to 2.84in for XEP not to 'overflow' ...

RB> What's going on here?!

RB> <?xml version="1.0"?>
RB> <fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format">
RB>         <fo:layout-master-set>
RB>                 <fo:simple-page-master master-name="main"
RB>                     page-width="4.42in" page-height="2.92in"
RB>                     margin-top="((2.92in - 2in) div 2) + 0.165in"
RB>                     margin-left="((4.42in - 3.5in) div 2) + 0.18in">
RB>                         <fo:region-body/>
RB>                 </fo:simple-page-master>
RB>         </fo:layout-master-set>
RB>         <fo:page-sequence master-reference="main">
RB>                 <fo:flow flow-name="xsl-region-body">
RB>                     <fo:block>
RB>                       <fo:external-graphic src="url('content.pdf')"/>
RB>                     </fo:block>
RB>                     <fo:block-container
RB>                         absolute-position="fixed">
RB>                         <fo:block>
RB>                           <fo:external-graphic
RB> src="url('printer-marks.pdf')"
RB>                           width="4.42in" height="2.84in"/>
RB>                         </fo:block>
RB>                     </fo:block-container>
RB>                 </fo:flow>
RB>         </fo:page-sequence>
RB> </fo:root>

RB> Setting the height on the 'printer-marks.pdf' to 2.92in, provides the
RB> following error on output:

RB> [warning] content overflow in an absolutely positioned block-container

RB> I've attached the 'printer-marks.pdf' if it helps.

RB> Many thanks!

RB> Brice Ruth


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