From: Chen, Cindy (C)(STP) (Cindy.Chen@guidant.com)
Date: Fri May 07 2004 - 11:43:06 PDT
Hi Alexander,
Thank you very much for the answer. That explains a lot.
Cindy
-----Original Message-----
From: Alexander Peshkov [mailto:peshkov@renderx.com]
Sent: Friday, May 07, 2004 9:52 AM
To: Chen, Cindy (C)(STP)
Subject: Re[2]: [xep-support] Another image scaling question
Hello Cindy,
We are hitting one obscure limitation of XEP here. When image height
is specified as a percentage, XEP calculates actual number using width
as a base. This limitation should be described in our documentation -
we will add appropriate note in the next version. As a workaround you
can set height equal to the real height of the page (in your example
it is '150mm').
Note that you should specify text/display-align on the fo:block, not
on the fo:external-graphic element. You also have to remove border
from fo:region-body since it also requires some space (or specify
image height as page-height minus border-width).
This is modified version of your example:
<fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format">
<fo:layout-master-set>
<fo:simple-page-master page-width="110mm" page-height="150mm" master-name="sample">
<fo:region-body region-name="xsl-region-body"/>
</fo:simple-page-master>
</fo:layout-master-set>
<fo:page-sequence master-reference="sample">
<fo:flow flow-name="xsl-region-body">
<fo:block display-align="center" text-align="center" line-height="0pt">
<fo:external-graphic src="url(Images/spots.jpg)"
content-width="scale-to-fit"
width="100%"
content-height="scale-to-fit"
height="150mm"/>
</fo:block>
</fo:flow>
</fo:page-sequence>
</fo:root>
Sorry for inconvenience.
Best regards,
Alexander Peshkov mailto:peshkov@renderx.com
RenderX
CCCS> Hi Alexander,
CCCS> I have tried to set line-height="0pt" on the block, I am still getting the error stating:
CCCS> [warning] no space for an element, trying to recover
CCCS> As a result, I am still not seeing the image on the result. My changed code is attatched.
CCCS> BTW, I am running XEP 3.7.5.
CCCS> Thanks,
CCCS> Cindy
CCCS> -----Original Message-----
CCCS> From: Alexander Peshkov [mailto:peshkov@renderx.com]
CCCS> Sent: Thursday, May 06, 2004 4:28 AM
CCCS> To: Chen, Cindy (C)(STP)
CCCS> Subject: Re: [xep-support] Another image scaling question
CCCS> Hello Cindy,
CCCS> In cases when image is taller than available space and vertical
CCCS> scaling is performed you get an overflow. The reason is simple:
CCCS> height="100%" means "as high as parent reference area content
CCCS> rectangle", however fo:external-graphic is an inline-level element and
CCCS> thus preceded and followed by empty-space known as half-leading. As a
CCCS> result the whole content is higher then available space and XEP drops
CCCS> overflowed image. In order to fix this problem you can simply set
CCCS> line-height="0pt" on the block that enclose image.
CCCS> Best regards,
CCCS> Alexander Peshkov mailto:peshkov@renderx.com
CCCS> RenderX
CCCS>> Hi all,
CCCS>> I have another question regarding image scaling. I am trying to scale and place an image into one page. So I defined FO like following:
CCCS>> <fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format">
CCCS>> <fo:layout-master-set>
CCCS>> <fo:simple-page-master page-width="110mm" page-height="150mm" master-name="sample">
CCCS>> <fo:region-body border="solid" region-name="xsl-region-body"/>
CCCS>> </fo:simple-page-master>
CCCS>> </fo:layout-master-set>
CCCS>> <fo:page-sequence master-reference="sample">
CCCS>> <fo:flow flow-name="xsl-region-body">
CCCS>> <fo:block>
CCCS>> <fo:external-graphic src="url(Images/spots.jpg)" display-align="center" text-align="center"
CCCS>> content-width="scale-to-fit" width="100%" content-height="scale-to-fit" height="100%"/>
CCCS>> </fo:block>
CCCS>> </fo:flow>
CCCS>> </fo:page-sequence>
CCCS>> </fo:root>
CCCS>> It worked fine as I expected. But one thing is that if I make the page width bigger than page height, I got an error stating:
CCCS>> [warning] no space for an element, trying to recover
CCCS>> Following is the two cases that will both cause the error:
CCCS>> <fo:simple-page-master page-width="110mm" page-height="150mm" master-name="sample" reference-orientation="90">
CCCS>> <fo:simple-page-master page-width="150mm" page-height="110mm" master-name="sample">
CCCS>> The image I am using is the one comes with the XEP sample code.
CCCS>> How could I avoid the error?
CCCS>> Thanks,
CCCS>> Cindy Chen
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