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Subject: Re: [docbook-apps] Centering chapter titles with fop
Le 7 déc. 2005 à 01:54, Glen Mazza a écrit :
> I think more detective work is needed:
>
> 1.) Can you show us your xml snippet you use to get the chapter
> centered (just chapter is OK, I suspect the problem & answer is the
> same for all preface and appendix.)
Actually I discover that this is not the same for chapter, preface
and appendix.
This a book with multiple files, double-sided .
There is a customization of titlepage-template, mainly to reduce the
space before and after:
A - For preface:
<t:titlepage t:element="preface" t:wrapper="fo:block">
<t:titlepage-content t:side="recto">
<title
t:force="1"
t:named-template="component.title"
param:node="ancestor-or-self::preface[1]"
margin-left="{$title.margin.left}"
font-size="&hsize5;"
font-family="{$title.fontset}"
font-weight="bold"
text-align="center"
start-indent="0pt"
space-before.minimum="0em"
space-before.optimum="0em"
space-before.maximum="0em"
space-after="0em"/>
B - For Appendix
<t:titlepage t:element="appendix" t:wrapper="fo:block">
<t:titlepage-content t:side="recto">
<title
t:named-template="component.title"
param:node="ancestor-or-self::appendix[1]"
margin-left="{$title.margin.left}"
font-size="&hsize4;"
font-weight="bold"
text-align="center"
space-before.minimum="0em"
space-before.optimum="0em"
space-before.maximum="0em"
font-family="{$title.fontset}"/>
(Notice the lack of start-indent="0pt" here, a mistake from my part).
Without it, Appendix is not centered, in both versions of stylesheet,
with it, it is centered in 1.68.1 only.
C - For Chapter
<t:titlepage t:element="chapter" t:wrapper="fo:block"
font-family="{$title.fontset}">
<t:titlepage-content t:side="recto" margin-
left="{$title.margin.left}">
<title t:named-template="component.title"
param:node="ancestor-or-self::chapter[1]"
font-size="&hsize5;"
font-weight="bold"
text-align="center"
start-indent="0pt"
space-before.minimum="0em"
space-before.optimum="0em"
space-before.maximum="0em"
space-after="0em"/>
There is also a custom layer:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
xmlns:fo="http://www.w3.org/1999/XSL/Format";>
<xsl:import href="http://docbook.sourceforge.net/release/xsl/current/
fo/docbook.xsl"/>
(Actually this is resolved locally to 1.68.1 or 1.69.1 depending of
which version I install)
<xsl:import href="titlepage-a4.xsl"/>
<!-- Allow to use extensions -->
<xsl:param name="use.extensions" select="'1'"></xsl:param>
<!-- For bookmarks -->
<xsl:param name="fop.extensions" select="1"></xsl:param>
<!-- Ensure the page orientation is portrait -->
<xsl:param name="page.orientation" select="portrait"></xsl:param>
<!-- A4 format -->
<xsl:param name="paper.type" select="'A4'"></xsl:param>
<xsl:param name="page.width" select="'210mm'"></xsl:param>
<xsl:param name="page.height" select="'297mm'"></xsl:param>
<!-- Double-sided -->
<xsl:param name="double.sided" select="1"></xsl:param>
<!-- Margins -->
<xsl:param name="page.margin.top" select="'7.5mm'"></xsl:param>
<xsl:param name="page.margin.bottom" select="'7.5mm'"></xsl:param>
<xsl:param name="region.before.extent" select="'5mm'"></xsl:param>
<xsl:param name="region.after.extent" select="'5mm'"></xsl:param>
<xsl:param name="body.margin.top" select="'10mm'"></xsl:param>
<xsl:param name="body.margin.bottom" select="'10mm'"></xsl:param>
<xsl:param name="page.margin.inner" select="'15mm'"></xsl:param>
<xsl:param name="page.margin.outer" select="'12mm'"></xsl:param>
<!-- No headers on blank pages -->
<xsl:param name="headers.on.blank.pages" select="0"></xsl:param>
<!-- Indentation of the titles for sections -->
<xsl:param name="title.margin.left" select="'-1pc'"/>
<!-- Chapter autolabelling -->
<xsl:param name="chapter.autolabel" select="'I'"/>
<!-- Section autolabelling -->
<xsl:param name="section.autolabel" select="'1'"/>
<!-- Size of body font -->
<xsl:param name="body.font.master">10</xsl:param>
<xsl:param name="body.font.size">
<xsl:value-of select="$body.font.master"/><xsl:text>pt</xsl:text>
</xsl:param>
<!-- Prohibites hyphenation -->
<xsl:param name="hyphenate">false</xsl:param>
...
</xsl:stylesheet>
>
> 2.) Next, show us a minimal snippet of the output .fo (not the PDF)
> created from that with 1.68 and 1.69.1 for the chapter. They
> should be different, because as you say the former works but the
> latter doesn't.
I've redone the production of pdf with exactly the same customized
stylesheets for 1.68.1 and 1.69.1, because actually there were
differences in the versions (keep-with-next for 1.68.1 and keep-with-
next-within-columns for 1.69.1 in official template) and also a
difference in start-indent in appendix or chapter.
So, now preface, chapters are centered in 1.68.1 but not appendix
(unless I put start-indent="0pt" as stated above); None are centered
in 1.69.1.
I - Here are the differences for appendix:
a - Appendix not centered in 1.68.1 (lack of start-indent="0pt)
<fo:flow flow-name="xsl-region-body"
start-indent="4pc"
end-indent="0pt">
<fo:block id="bluefish-appb">
<fo:block>
<fo:block>
<fo:block
margin-left="-1pc"
font-size="20.736pt"
font-weight="bold"
space-before.minimum="0em"
space-before.optimum="0em"
space-before.maximum="0em"
font-family="sans-serif,Symbol,ZapfDingbats">
<fo:block
keep-with-next.within-column="always"
space-before.optimum="10pt"
space-before.minimum="10pt * 0.8"
space-before.maximum="10pt * 1.2"
hyphenate="false"
start-indent="0pt"
hyphenation-character="-"
hyphenation-push-character-count="2"
hyphenation-remain-character-count="2">Appendix B. Bluefish change
history</fo:block>
</fo:block>
</fo:block>
</fo:block>
</fo:block>
b - Appendix centered in 1.68.1 (with start-indent="0pt")
<fo:flow flow-name="xsl-region-body"
start-indent="4pc"
end-indent="0pt">
<fo:block id="bluefish-appa">
<fo:block>
<fo:block>
<fo:block margin-left="-1pc"
font-size="20.736pt"
font-weight="bold"
text-align="center" (change here)
start-indent="0pt" (change here)
space-before.minimum="0em"
space-before.optimum="0em"
space-before.maximum="0em"
font-family="sans-serif,Symbol,ZapfDingbats">
<fo:block keep-with-next.within-column="always"
space-before.optimum="10pt"
space-before.minimum="10pt * 0.8"
space-before.maximum="10pt * 1.2"
hyphenate="false"
start-indent="0pt"
hyphenation-character="-"
hyphenation-push-character-count="2"
hyphenation-remain-character-count="2">Appendix A. Credits<fo:block>
</fo:block>
</fo:block>
</fo:block>
</fo:block>
Notice the integration of text-align and start-indent in the first
fo:block.
c - Appendix not centered on 1.69.1 (without start-indent)
<fo:flow flow-name="xsl-region-body"> (change here)
<fo:block id="bluefish-appb">
<fo:block>
<fo:block>
<fo:block
margin-left="-1pc"
font-size="20.736pt"
font-weight="bold"
space-before.minimum="0em"
space-before.optimum="0em"
space-before.maximum="0em"
font-family="sans-serif,Symbol,ZapfDingbats">
<fo:block
keep-with-next.within-column="always"
space-before.optimum="10pt"
space-before.minimum="10pt * 0.8"
space-before.maximum="10pt * 1.2"
hyphenate="false"
text-align="left" (change here)
start-indent="-1pc" (change here)
hyphenation-character="-"
hyphenation-push-character-count="2"
hyphenation-remain-character-count="2">Appendix B. Bluefish change
history</fo:block></fo:block>
</fo:block>
</fo:block>
</fo:block>
So, basically, two changes: one for the pc thing, and a text-
align="left" introduced in 1.69.1 (I cannot understand where it comes
from).
d - Appendix not centered on 1.69.1 (with start-indent-
<fo:flow flow-name="xsl-region-body"> (change here-
<fo:block id="bluefish-appa">
<fo:block>
<fo:block>
<fo:block margin-left="-1pc"
font-size="20.736pt"
font-weight="bold"
text-align="center"
start-indent="0pt"
space-before.minimum="0em"
space-before.optimum="0em"
space-before.maximum="0em"
font-family="sans-serif,Symbol,ZapfDingbats">
<fo:block keep-with-next.within-column="always"
space-before.optimum="10pt"
space-before.minimum="10pt * 0.8"
space-before.maximum="10pt * 1.2"
hyphenate="false"
text-align="left" (change here)
start-indent="-1pc" (change here)
hyphenation-character="-"
hyphenation-push-character-count="2"
hyphenation-remain-character-count="2">Appendix A. Credits</fo:block>
</fo:block>
</fo:block>
</fo:block>
</fo:block>
It seems that 1.69.1 overrides whichever change is made to alignement
and start-indent with what is defined for title-margin-left. (i.e. no
distinction between chapter, preface, appendix and section titles).
II - chapter:
a - Chapter centered on 1.68.1
<fo:flow flow-name="xsl-region-body"
start-indent="4pc"
end-indent="0pt">
<fo:block id="debugging-bluefish">
<fo:block font-family="sans-serif,Symbol,ZapfDingbats">
<fo:block margin-left="-1pc">
<fo:block font-size="24.8832pt"
font-weight="bold"
text-align="center"
space-before.minimum="0em"
space-before.optimum="0em"
space-before.maximum="0em"
space-after="0em">
<fo:block keep-with-next.within-column="always"
space-before.optimum="10pt"
space-before.minimum="10pt * 0.8"
space-before.maximum="10pt * 1.2"
hyphenate="false"
start-indent="0pt"
hyphenation-character="-"
hyphenation-push-character-count="2"
hyphenation-remain-character-count="2">Chapter 4. Debugging
Bluefish</fo:block>
</fo:block>
</fo:block>
</fo:block>
</fo:block>
b - Chapter not centered on 1.69.1
<fo:flow flow-name="xsl-region-body"> (change here)
<fo:block id="debugging-bluefish">
<fo:block font-family="sans-serif,Symbol,ZapfDingbats">
<fo:block margin-left="-1pc">
<fo:block font-size="24.8832pt"
font-weight="bold"
text-align="center"
space-before.minimum="0em"
space-before.optimum="0em"
space-before.maximum="0em"
space-after="0em">
<fo:block keep-with-next.within-column="always"
space-before.optimum="10pt"
space-before.minimum="10pt * 0.8"
space-before.maximum="10pt * 1.2"
hyphenate="false"
text-align="left" (change here)
start-indent="-1pc" (change here)
hyphenation-character="-"
hyphenation-push-character-count="2"
hyphenation-remain-character-count="2">Chapter IV. Debugging
Bluefish</fo:block>
</fo:block>
</fo:block>
</fo:block>
</fo:block>
So, there changes: two related to pc, and the same text-align="left"
introduced. Same observation that above for appendix.
>
> 3.) If they are different, confirm that the template for chapters
> have changed between 1.68 and 1.69.1 for the FO docbook stylesheets.
I cannot find anything meaningfull different (at least for me). So
apart from the keep-with-next.within-column or keep-with-next and the
pc thing (margin), I don't see anything changing.
> Once you drill down to this level, it is just a question of
> inquiring why the templates changed between 1.68 and 1.69.1 for
> chapters.
The question is more for me, how do I persuade fop to take my desires
into account :-)
> Michèle Garoche wrote:
>> I'm using docbook 4.4, docbook-xsl 1.69.1 and fop 0.25.
>>
>> I try to get the preface, chapter and appendix titles centered,
>> while section titles are left-margined, but cannot. It used to
>> work with docbook-xsl 1.68.
>>
>> Is there something I missed?
Cheers,
Michèle
<http://micmacfr.homeunix.org>
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