docbook-apps

As can be seen from the screenshot, the composed page-numbers are not
right aligned. Where do I have to look (adjust) that this will take place?

Regards

Bernhard

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I don't think there is anything wrong the the fo coding by the
stylesheet.  Here is a similar report for the DITA Open Toolkit on the
fop-users mailing list:

http://apache-fop.1065347.n5.nabble.com/White-space-in-FO-causes-PDF-TOC-problem-td46410.html

It isn't clear that your problem is caused by whitespace around the
title.  Your misaligned entries all seem to have short dot leaders.  But
it seems the fop algorithm has a problem with right alignments with dot
leaders.

Bob Stayton
Sagehill Enterprises
bobs@sagehill.net

On 11/25/2018 10:03 AM, Bernhard Kleine wrote:
>
> As can be seen from the screenshot, the composed page-numbers are not
> right aligned. Where do I have to look (adjust) that this will take place?
>
> Regards
>
> Bernhard
>
> --
> spitzhalde9
> D-79853 lenzkirch
> bernhard.kleine@gmx.net
> www.b-kleine.com,www.urseetal.net
> -
> thunderbird mit enigmail
> GPG schlüssel: D5257409
> fingerprint:
> 08 B7 F8 70 22 7A FC C1 15 49 CA A6 C7 6F A0 2E D5 25 74 09

Hi Bob,

Unfortunately the case you cite is not applicable in my example. I
looked for the spacing e.g. for this line:

<sect1 xml:id="hesperiidaeHaeufigkeit" xreflabel="Die Häufigkeit der
Hesperiidae">
           

There is not any extra space in the coding nor is there an unusual
whitespace. IMHO I see these irregularities only when the leader is very
short. Maybe one get rid of the leader dots. But I have not found it in
your book.

Regards

Bernhard

Am 26.11.2018 um 05:35 schrieb Bob Stayton:
>
> I don't think there is anything wrong the the fo coding by the
> stylesheet.  Here is a similar report for the DITA Open Toolkit on the
> fop-users mailing list:
>
> http://apache-fop.1065347.n5.nabble.com/White-space-in-FO-causes-PDF-TOC-problem-td46410.html
>
> It isn't clear that your problem is caused by whitespace around the
> title.  Your misaligned entries all seem to have short dot leaders. 
> But it seems the fop algorithm has a problem with right alignments
> with dot leaders.
>
> Bob Stayton
> Sagehill Enterprises
> bobs@sagehill.net
> On 11/25/2018 10:03 AM, Bernhard Kleine wrote:
>>
>> As can be seen from the screenshot, the composed page-numbers are not
>> right aligned. Where do I have to look (adjust) that this will take
>> place?
>>
>> Regards
>>
>> Bernhard
>>
>> --
>> spitzhalde9
>> D-79853 lenzkirch
>> bernhard.kleine@gmx.net
>> www.b-kleine.com, www.urseetal.net
>> -
>> thunderbird mit enigmail
>> GPG schlüssel: D5257409
>> fingerprint:
>> 08 B7 F8 70 22 7A FC C1 15 49 CA A6 C7 6F A0 2E D5 25 74 09

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</sect1>

The more general case with dot leaders and right alignment is an
inresolved FOP bug:

https://issues.apache.org/jira/browse/FOP-1839

The section on customizing table of contents entries is here:

http://www.sagehill.net/docbookxsl/PrintToc.html#PrintTocEntries

The template named 'toc.line' generates an <fo:leader> element that
produces the dot leaders.

Bob Stayton
Sagehill Enterprises
bobs@sagehill.net

On 11/26/2018 12:19 AM, Bernhard Kleine wrote:
>
> Hi Bob,
>
> Unfortunately the case you cite is not applicable in my example. I
> looked for the spacing e.g. for this line:
>
> <sect1 xml:id="hesperiidaeHaeufigkeit" xreflabel="Die Häufigkeit der
> Hesperiidae">
>            
>
> There is not any extra space in the coding nor is there an unusual
> whitespace. IMHO I see these irregularities only when the leader is
> very short. Maybe one get rid of the leader dots. But I have not found
> it in your book.
>
> Regards
>
> Bernhard
>
> Am 26.11.2018 um 05:35 schrieb Bob Stayton:
>>
>> I don't think there is anything wrong the the fo coding by the
>> stylesheet.  Here is a similar report for the DITA Open Toolkit on
>> the fop-users mailing list:
>>
>> http://apache-fop.1065347.n5.nabble.com/White-space-in-FO-causes-PDF-TOC-problem-td46410.html
>>
>> It isn't clear that your problem is caused by whitespace around the
>> title.  Your misaligned entries all seem to have short dot leaders. 
>> But it seems the fop algorithm has a problem with right alignments
>> with dot leaders.
>>
>> Bob Stayton
>> Sagehill Enterprises
>> bobs@sagehill.net
>> On 11/25/2018 10:03 AM, Bernhard Kleine wrote:
>>>
>>> As can be seen from the screenshot, the composed page-numbers are
>>> not right aligned. Where do I have to look (adjust) that this will
>>> take place?
>>>
>>> Regards
>>>
>>> Bernhard
>>>
>>> --
>>> spitzhalde9
>>> D-79853 lenzkirch
>>> bernhard.kleine@gmx.net
>>> www.b-kleine.com,www.urseetal.net
>>> -
>>> thunderbird mit enigmail
>>> GPG schlüssel: D5257409
>>> fingerprint:
>>> 08 B7 F8 70 22 7A FC C1 15 49 CA A6 C7 6F A0 2E D5 25 74 09
> --
> spitzhalde9
> D-79853 lenzkirch
> bernhard.kleine@gmx.net
> www.b-kleine.com,www.urseetal.net
> -
> thunderbird mit enigmail
> GPG schlüssel: D5257409
> fingerprint:
> 08 B7 F8 70 22 7A FC C1 15 49 CA A6 C7 6F A0 2E D5 25 74 09

</sect1></fo:leader>

I have changed the "dots" to space. this aligned everything but this
line in the TOC:

<sect2>
               
           

Obviously no whitespace involved. Maybe you have an idea.

Regards

Bernhard


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</sect2>

I was too fast: The misalignment is only then when the space between the
title and the number is too small.

Once it it distributed over two lines, there is no longer a
misalignment: Compare this from the general TOC to the one below from a
chapter TOC:

Am 26.11.2018 um 22:21 schrieb Bernhard Kleine:
>
> I have changed the "dots" to space. this aligned everything but this
> line in the TOC:
>
> <sect2>
>                
>            
>
> Obviously no whitespace involved. Maybe you have an idea.
>
> Regards
>
> Bernhard
>
>
> --
> spitzhalde9
> D-79853 lenzkirch
> bernhard.kleine@gmx.net
> www.b-kleine.com, www.urseetal.net
> -
> thunderbird mit enigmail
> GPG schlüssel: D5257409
> fingerprint:
> 08 B7 F8 70 22 7A FC C1 15 49 CA A6 C7 6F A0 2E D5 25 74 09

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</sect2>

On 2018-11-26 Bob Stayton wrote:
> The more general case with dot leaders and right alignment is an
> inresolved FOP bug:
>
> https://issues.apache.org/jira/browse/FOP-1839
>

IIRC this problem can be eliminated if outer spaces around the dots are replaced with leaders of fixed width. The standard space is stretching element thus hard to calculate properly if there are too many variables to handle.


So in <xsl:template name="toc.line"> it could be modified like this:

<fo:basic-link internal-destination="{$id}">
<xsl:apply-templates select="." mode="titleabbrev.markup"/>
</fo:basic-link>
<fo:leader leader-length="3pt"/>
<fo:leader leader-alignment="reference-area">
<xsl:attribute name="leader-pattern">dots</xsl:attribute>
<xsl:attribute name="leader-pattern-width">3pt</xsl:attribute>
<xsl:attribute name="rule-thickness">0.5pt</xsl:attribute>
</fo:leader>
<fo:leader leader-length="3pt"/>
<fo:basic-link internal-destination="{$id}">
<fo:page-number-citation ref-id="{$id}"/>
</fo:basic-link>


Regards,

Jan

I got interested and made a little working example:


    schematypens="http://relaxng.org/ns/structure/1.0"?>
    type="application/xml"
    schematypens="http://purl.oclc.org/dsdl/schematron"?>
<book xmlns="http://docbook.org/ns/docbook" xml:lang="de"></book>
xmlns:xi="http://www.w3.org/2001/XInclude"
    xmlns:ns5="http://www.w3.org/2000/svg"
xmlns:ns="http://docbook.org/ns/docbook"
    xmlns:xlink="http://www.w3.org/1999/xlink" version="5.1">
<part>
   
    <chapter>
        <sect1></sect1>
        <sect1></sect1>
        <sect1></sect1>
        <sect1></sect1>
        <sect1></sect1>
        <sect1></sect1>
        <sect1></sect1>
    </chapter>
</part>


This transforms to the following TOC:


Maybe someone can explain why all numbers are not right aligned. IMHO
the problem is not with dots, but how the remaining whitespace between
title and number is calculated.

Regards

Bernhard

Am 26.11.2018 um 22:42 schrieb Jan Tosovsky:
> On 2018-11-26 Bob Stayton wrote:
>> The more general case with dot leaders and right alignment is an
>> inresolved FOP bug:
>>
>> https://issues.apache.org/jira/browse/FOP-1839
>>
>>
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the .fo file for the respective part of the TOC is

<fo:block text-align-last="justify" end-indent="24pt"></fo:block>
last-line-end-indent="-24pt"><fo:inline></fo:inline>
keep-with-next.within-line="always"><fo:basic-link></fo:basic-link>
internal-destination="d0e13">Section Section Section Section Section
Section Section<fo:inline></fo:inline>
keep-together.within-line="always"><fo:leader leader-pattern="space"></fo:leader>
leader-pattern-width="5pt" leader-alignment="reference-area"
keep-with-next.within-line="always"/><fo:basic-link></fo:basic-link>
internal-destination="d0e13">1–<fo:page-number-citation></fo:page-number-citation>
ref-id="d0e13"/><fo:block></fo:block>
text-align-last="justify" end-indent="24pt"
last-line-end-indent="-24pt"><fo:inline></fo:inline>
keep-with-next.within-line="always"><fo:basic-link></fo:basic-link>
internal-destination="d0e16">Section Section Section Section Section
Section Section <fo:inline></fo:inline>
keep-together.within-line="always"><fo:leader leader-pattern="space"></fo:leader>
leader-pattern-width="5pt" leader-alignment="reference-area"
keep-with-next.within-line="always"/><fo:basic-link></fo:basic-link>
internal-destination="d0e16">1–<fo:page-number-citation></fo:page-number-citation>
ref-id="d0e16"/><fo:block></fo:block>
text-align-last="justify" end-indent="24pt"
last-line-end-indent="-24pt"><fo:inline></fo:inline>
keep-with-next.within-line="always"><fo:basic-link></fo:basic-link>
internal-destination="d0e19">Section Section Section Section Section
Section Section S<fo:inline></fo:inline>
keep-together.within-line="always"><fo:leader leader-pattern="space"></fo:leader>
leader-pattern-width="5pt" leader-alignment="reference-area"
keep-with-next.within-line="always"/><fo:basic-link></fo:basic-link>
internal-destination="d0e19">1–<fo:page-number-citation></fo:page-number-citation>
ref-id="d0e19"/><fo:block></fo:block>
text-align-last="justify" end-indent="24pt"
last-line-end-indent="-24pt"><fo:inline></fo:inline>
keep-with-next.within-line="always"><fo:basic-link></fo:basic-link>
internal-destination="d0e22">Section Section Section Section Section
Section Section Se<fo:inline></fo:inline>
keep-together.within-line="always"><fo:leader leader-pattern="space"></fo:leader>
leader-pattern-width="5pt" leader-alignment="reference-area"
keep-with-next.within-line="always"/><fo:basic-link></fo:basic-link>
internal-destination="d0e22">1–<fo:page-number-citation></fo:page-number-citation>
ref-id="d0e22"/><fo:block></fo:block>
text-align-last="justify" end-indent="24pt"
last-line-end-indent="-24pt"><fo:inline></fo:inline>
keep-with-next.within-line="always"><fo:basic-link></fo:basic-link>
internal-destination="d0e25">Section Section Section Section Section
Section Section Sec<fo:inline></fo:inline>
keep-together.within-line="always"><fo:leader leader-pattern="space"></fo:leader>
leader-pattern-width="5pt" leader-alignment="reference-area"
keep-with-next.within-line="always"/><fo:basic-link></fo:basic-link>
internal-destination="d0e25">1–<fo:page-number-citation></fo:page-number-citation>
ref-id="d0e25"/><fo:block></fo:block>
text-align-last="justify" end-indent="24pt"
last-line-end-indent="-24pt"><fo:inline></fo:inline>
keep-with-next.within-line="always"><fo:basic-link></fo:basic-link>
internal-destination="d0e28">Section Section Section Section Section
Section Section Sect<fo:inline></fo:inline>
keep-together.within-line="always"><fo:leader leader-pattern="space"></fo:leader>
leader-pattern-width="5pt" leader-alignment="reference-area"
keep-with-next.within-line="always"/><fo:basic-link></fo:basic-link>
internal-destination="d0e28">1–<fo:page-number-citation></fo:page-number-citation>
ref-id="d0e28"/>

Am 27.11.2018 um 08:59 schrieb Bernhard Kleine:
>
> I got interested and made a little working example:
>
>
> >     schematypens="http://relaxng.org/ns/structure/1.0"?>
> >     type="application/xml"
>     schematypens="http://purl.oclc.org/dsdl/schematron"?>
> <book xmlns="http://docbook.org/ns/docbook" xml:lang="de"></book>
> xmlns:xi="http://www.w3.org/2001/XInclude"
>     xmlns:ns5="http://www.w3.org/2000/svg"
> xmlns:ns="http://docbook.org/ns/docbook"
>     xmlns:xlink="http://www.w3.org/1999/xlink" version="5.1">
> <part>
>    
>     <chapter>
>         <sect1></sect1>
>         <sect1></sect1>
>         <sect1></sect1>
>         <sect1></sect1>
>         <sect1></sect1>
>         <sect1></sect1>
>         <sect1></sect1>
>     </chapter>
> </part>
>
>
> This transforms to the following TOC:
>
>
> Maybe someone can explain why all numbers are not right aligned. IMHO
> the problem is not with dots, but how the remaining whitespace between
> title and number is calculated.
>
> Regards
>
> Bernhard
>
> Am 26.11.2018 um 22:42 schrieb Jan Tosovsky:
>> On 2018-11-26 Bob Stayton wrote:
>>> The more general case with dot leaders and right alignment is an
>>> inresolved FOP bug:
>>>
>>> https://issues.apache.org/jira/browse/FOP-1839
>>>
>>>
> --
> spitzhalde9
> D-79853 lenzkirch
> bernhard.kleine@gmx.net
> www.b-kleine.com, www.urseetal.net
> -
> thunderbird mit enigmail
> GPG schlüssel: D5257409
> fingerprint:
> 08 B7 F8 70 22 7A FC C1 15 49 CA A6 C7 6F A0 2E D5 25 74 09

--
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D-79853 lenzkirch
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