Re: [docbook-apps] Image overflows

["Bob Stayton" <bobs@sagehill.net>]

Hi Vincent,
If you don't mind my asking, how did you learn that FOP 0.95 supports it? 
The FOP compliance page does not mention it:

http://xmlgraphics.apache.org/fop/compliance.html

The only 1.1 property it mentions is for bookmarks.  I suspect the 
compliance page needs to be updated.

Bob Stayton
Sagehill Enterprises
bobs@sagehill.net


----- Original Message ----- 
From: "Vincent Hennebert" <vhennebert@gmail.com>
To: "docbook-apps" <docbook-apps@lists.oasis-open.org>
Sent: Friday, November 13, 2009 9:16 AM
Subject: Re: [docbook-apps] Image overflows


> Hi Bob,
>
> Bob Stayton wrote:
>> Hi,
>>
>> content-width="scale-down-to-fit"
>>
>> 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.
>
> Apache FOP supports it since version 0.95. I don’t know about other
> XSL-FO processors.
>
>
> Vincent
>
>
>> Bob Stayton
>> Sagehill Enterprises
>> bobs@sagehill.net
>>
>>
>> ----- 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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