For you specifying an absolute height in the block-container or in the external-graphic should be the same (in terms of complexity). So I don't see the need for a workaround. But I will confirm whether the fact that content-height does not seem to take the height from the block-container is a bug, and then I will create a Jira ticket if needed.

On 2/25/14, 2:18 PM, wrote:

Ok. But scaling has in our case to be dynamic.

So I even can calulate the maximum availiable space.

Will there be a bug created in the Jira?

What I mean is, will it be fixed by the apache team or
should I build a workaround?

*Von:*Luis Bernardo []
*Gesendet:* Dienstag, 25. Februar 2014 14:05
*Betreff:* Re: Scaling images

Add the height attribute to the external-graphic element. Now, I was expecting that height="100%" would work in this case but it doesn't seem to be the case so either there is a bug in the code or in my understanding. But if you specify an absolute value, say height="150mm", then it works.

On Mon, Feb 24, 2014 at 2:54 PM, < <>> wrote:

But it fails also.

Is there really a support of content-height="scale-to-fit"    ?

*Von:*Luis Bernardo [ <>]
*Gesendet:* Montag, 24. Februar 2014 15:46

*An:* <>
*Betreff:* Re: Scaling images

Yes, that is the best approach. You can even check now that a percentage for the height attribute in the external-graphic element works since the height of the containing block is being explicitly set.

On Mon, Feb 24, 2014 at 2:25 PM, < <>> wrote:

Ok should I use something like this?

<fo:block-container width="100mm" height="150mm" border="solid solid solid solid" border-color="pink" background-color="violet" >

<fo:block id="id1049528" border="solid solid solid solid" border-color="red" background-color="blue">

<fo:external-graphic src="url(file:///c:/temp/SernaPlugin/Source/draft/draft/hoch.jpg <file:///c:%5Ctemp%5CSernaPlugin%5CSource%5Cdraft%5Cdraft%5Choch.jpg>)" content-height="scale-to-fit" scaling="uniform"/>



*Von:*Luis Bernardo [ <>]
*Gesendet:* Montag, 24. Februar 2014 14:33
*An:* <>
*Betreff:* Re: Scaling images

I think the issue is height="100%", which doesn't work the way you probably expect... When you specify 100%, you want 100% of what? Width does not suffer from the same "problem" because the width is constrained by the page width. Since the height is not constrained by the page height, as you maybe expected, then you get the behavior you noticed.

From the spec for height:


Specifies a percentage height. The percentage is calculated with respect to the height of the

generated box's containing block. If the height of the containing block is not specified explicitly

(i.e., it depends on content height), the value is interpreted like "auto".

So that's what you get, i.e., you get auto.

On Mon, Feb 24, 2014 at 1:09 PM, < <>> wrote:

Hello FOP,

I've got an issue about scalling images.

The target is to scale images so they fit to the space on the page.

Scaling the width works fine.

I set this ("breit.png" is a picture with extreme width):

<fo:external-graphic src="url(file:///c:/temp/SernaPlugin/Source/draft/draft/breit.png <file:///c:%5Ctemp%5CSernaPlugin%5CSource%5Cdraft%5Cdraft%5Cbreit.png>)" content-width="scale-to-fit" width="100%" height="100%" inline-progression-dimension.maximum="100%" inline-progression-dimension.minimum="1%" scaling="uniform" />

So I tried this ("hoch.png" is a picture with extreme height) :

<fo:external-graphic src="url(file:///c:/temp/SernaPlugin/Source/draft/draft/hoch.png <file:///c:%5Ctemp%5CSernaPlugin%5CSource%5Cdraft%5Cdraft%5Choch.png>)" content-height="scale-to-fit" width="100%" height="100%" inline-progression-dimension.maximum="100%" inline-progression-dimension.minimum="1%" scaling="uniform"/>

àThat failed àThe image was not scaled.

So what's wrong ?

Thanks and
Kind regards

Markus Sticker
Forschung und Entwicklung ZF Konzern/Research and Development ZF Group
Infrastruktur/Infrastructure (DTEP4)

*ZF **Friedrichshafen AG*
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