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Subject: Re: [docbook-apps] Image overflows



is a new feature in XSL-FO version 1.1.  Do you know of any XSL-FO 
processors that support it?  I can't seem to find it mentioned in any 
documentation of the processors.

Bob Stayton
Sagehill Enterprises

----- Original Message ----- 
From: "Vincent Hennebert" <vhennebert@gmail.com>
To: "docbook-apps" <docbook-apps@lists.oasis-open.org>
Sent: Friday, November 13, 2009 2:53 AM
Subject: Re: [docbook-apps] Image overflows

> Hi Tobias,
> Tobias Anstett [k15t.com] wrote:
>> Hi,
>> Recently I had a problem with image overflows using Apache as well as 
>> XEP.
>> I use both very wide and very high images in my documentation. When
>> applying my customization layers they are always scaled to match the
>> width of the page but I have problems if the image is still to high to
>> match the available page space/size.
>> Using Apache images are just rendered on top of the page ignoring the
>> page master setup (so above header, body, footer, starter ...) not
>> fitting into the available area in the body.
>> Using XEP there is just some information in the logs stating that XEP
>> was not able to satisfy the constraints and (!!!) does not print the
>> image at all.
>> I use <d:imagedata width="100%" contentdepth="100%" .../> in docbook.
>> Is there a way to enable some kind of auto-fit functionality? In a
>> customization layer producing some kind of powerpoint slide layout I
>> overwrote the graphic template to set the (maximum) height. Now,
>> i) very wide but not that high images are scaled to fit the available 
>> width (OK)
>> ii) very high but not very wide images are scaled to fit the available
>> height (OK)
>> iii) small images are upscaled to match height or respectively the
>> width (NOT REALLY OK)
>> Do somebody have a solution for point iii ?
> Not sure of what needs to be done at the DocBook level, but at the
> XSL-FO level you should generate something like this:
>    <fo:external-graphic src="url('path/to/the/image')"
>        inline-progression-dimension.maximum="100%"
>        content-width="scale-down-to-fit"
>        block-progression-dimension.maximum="<height of region-body>"
>        content-height="scale-down-to-fit"/>
> That should keep small images to their natural widths and scale down
> bigger images.
> HTH,
> Vincent
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