Hi Erik,
You have run into a feature of XSL-FO. The space-before property is
purposely ignored at the top of a page unless it is also accompanied by
space-before.conditionality="retain"
That is because when a block element is bumped to the next page during
pagination, its text will start at the top of the body area as you would
expect, rather than pushed down by its space-before property. In the case
of a chapter title that you know starts at the top of a page and you want
the space, you have to override that feature with this property.
Bob Stayton
Sagehill Enterprises
[email protected]
--------------------------------------------------
From: "Erik Leunissen" <[email protected]>
Sent: Saturday, October 05, 2013 10:20 AM
To: <[email protected]>
Subject: [docbook-apps] impotent "space-before.*" in attribute set
component.title.properties
I'm customizing the appearance of chapter titles using the attribute set
below in my customization layer.
No matter to what extreme values I set the "space-before.*" attributes,
they don't make any difference at all in the fo output (PDF). This as
opposed to the "space-after.*" attributes, to which the output is
sensitive as expected.
I'm clueless about what's going wrong: my logic, xsl or fop processing,
...
Any help in directing me where to look for something inappropriate is much
appreciated.
Thanks in advance,
Erik Leunissen.
--
Processing system
-----------------
docbook stylesheets version 1.78
FOP Version 1.1
Customization
-------------
<xsl:attribute-set name="component.title.properties">
<xsl:attribute name="font-size">
<xsl:value-of select="$body.font.master * 4.0"></xsl:value-of>
<xsl:text>pt</xsl:text>
</xsl:attribute>
<!-- The following lines don't have any effect at all -->
<xsl:attribute name="space-before.minimum">12.0em</xsl:attribute>
<xsl:attribute name="space-before.optimum">13.0em</xsl:attribute>
<xsl:attribute name="space-before.maximum">14.0em</xsl:attribute>
<!-- These do affect the output -->
<xsl:attribute name="space-after.minimum">2.5em</xsl:attribute>
<xsl:attribute name="space-after.optimum">3.0em</xsl:attribute>
<xsl:attribute name="space-after.maximum">3.5em</xsl:attribute>
</xsl:attribute-set>
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