page layout bug

[Mark Volkmann]

According to the W3C XSL-FO recommendation, region-before and region-
after should extend horizontally all the way across the page. region-
start and region-end should extend vertically, consuming whatever  
space remains after region-before and region-after claim their space.

FOP doesn't do this. In FOP, region-start and region-end extend  
vertically all the way down the page. region-before and region-end  
extend horizontally, consuming whatever space remains after region-
start and region-end claim their space.

I'm seen some emails saying that this can be corrected by setting  
precedence attributes. However, I think what's in the recommendation  
should be the default behavior.

Is this considered a bug in FOP?

---
Mark Volkmann

[Manuel Mall-2]

Mark,

It is my understanding that the question "who gets the corners of the page"
is controlled by the precedence property which applies only to the
region-before and region-after. This property is by default false which
means if not set the start and end regions extend into the corners of the
page.

Manuel

> -----Original Message-----
> From: Mark Volkmann [mailto:mark@...]
> Sent: Sunday, 6 July 2008 11:17 AM
> To: fop-users@...
> Subject: page layout bug
>
> According to the W3C XSL-FO recommendation, region-before and region-
> after should extend horizontally all the way across the page. region-
> start and region-end should extend vertically, consuming whatever
> space remains after region-before and region-after claim their space.
>
> FOP doesn't do this. In FOP, region-start and region-end extend
> vertically all the way down the page. region-before and region-end
> extend horizontally, consuming whatever space remains after region-
> start and region-end claim their space.
>
> I'm seen some emails saying that this can be corrected by setting
> precedence attributes. However, I think what's in the recommendation
> should be the default behavior.
>
> Is this considered a bug in FOP?
>
> ---
> Mark Volkmann
>
>
>

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[Andreas Delmelle-2]

On Jul 6, 2008, at 05:59, Manuel Mall wrote:

>> -----Original Message-----
>> From: Mark Volkmann [mailto:mark@...]
>> Sent: Sunday, 6 July 2008 11:17 AM
>> To: fop-users@...
>> Subject: page layout bug
>>
>> According to the W3C XSL-FO recommendation, region-before and region-
>> after should extend horizontally all the way across the page. region-
>> start and region-end should extend vertically, consuming whatever
>> space remains after region-before and region-after claim their space.
>>
> It is my understanding that the question "who gets the corners of  
> the page"
> is controlled by the precedence property which applies only to the
> region-before and region-after. This property is by default false  
> which
> means if not set the start and end regions extend into the corners  
> of the
> page.

Yep. It's only rather unfortunate that the 'clarifying' images in the  
Recommendation (like in 6.4.13 simple-page-master) show the behavior  
Mark is describing (corresponds to non-default values for  
'precedence' on region-before and region-after...), thus giving the  
impression that this is the default behavior.


Cheers

Andreas


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[Mark Volkmann]

On Jul 6, 2008, at 2:44 AM, Andreas Delmelle wrote:

> On Jul 6, 2008, at 05:59, Manuel Mall wrote:
>
>>> -----Original Message-----
>>> From: Mark Volkmann [mailto:mark@...]
>>> Sent: Sunday, 6 July 2008 11:17 AM
>>> To: fop-users@...
>>> Subject: page layout bug
>>>
>>> According to the W3C XSL-FO recommendation, region-before and  
>>> region-
>>> after should extend horizontally all the way across the page.  
>>> region-
>>> start and region-end should extend vertically, consuming whatever
>>> space remains after region-before and region-after claim their  
>>> space.
>>>
>> It is my understanding that the question "who gets the corners of  
>> the page"
>> is controlled by the precedence property which applies only to the
>> region-before and region-after. This property is by default false  
>> which
>> means if not set the start and end regions extend into the corners  
>> of the
>> page.
>
> Yep. It's only rather unfortunate that the 'clarifying' images in  
> the Recommendation (like in 6.4.13 simple-page-master) show the  
> behavior Mark is describing (corresponds to non-default values for  
> 'precedence' on region-before and region-after...), thus giving the  
> impression that this is the default behavior.

It's quite a puzzle to determine the default behaviour from the XSL-FO  
1.1 Recommendation. Are you saying that the correct default behavior  
is for region-before and region-after to default to a precedence of  
false and therefore region-start and region-end will default to true?  
Is there a section in the Recommendation that makes this clear?

---
Mark Volkmann

[Andreas Delmelle-2]

>----- Oorspronkelijk bericht -----
>Van: Mark Volkmann [mailto:mark@...]
>Verzonden: zondag, juli 6, 2008 02:19 PM
>
>On Jul 6, 2008, at 2:44 AM, Andreas Delmelle wrote:

Hi Mark

>> Yep. It's only rather unfortunate that the 'clarifying' images in
>> the Recommendation (like in 6.4.13 simple-page-master) show the
>> behavior Mark is describing (corresponds to non-default values for
>> 'precedence' on region-before and region-after...), thus giving the
>> impression that this is the default behavior.
>
>
>It's quite a puzzle to determine the default behaviour from the XSL-FO  
>1.1 Recommendation. Are you saying that the correct default behavior
>is for region-before and region-after to default to a precedence of
>false and therefore region-start and region-end will default to true?

Not entirely. The 'precedence' property only applies to region-before and region-after, and there it defaults to a value of 'false'. You can specify it on region-start or region-end, but there it has no effect.

The example given under fo:simple-page-master therefore reflects the situation where the author has specified an explicit value of 'true' for both region-before and -after...

>Is there a section in the Recommendation that makes this clear?

Not really a section. It follows from the definition of the property:
http://www.w3.org/TR/xsl/#precedence

HTH!

Cheers

Andreas



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