Re: [xsl] XSL-FO Property Resolution / Expressions

Subject: Re: [xsl] XSL-FO Property Resolution / Expressions
From: "G. Ken Holman" <gkholman@xxxxxxxxxxxxxxxxxxxx>
Date: Sun, 19 Oct 2003 20:56:07 -0400
At 2003-10-19 21:07 +0200, Stefan Hermann wrote:
I have some questions concerning the property resolution when using
What is the result of calling the function "max" (of the core function
library) with percentage arguments ( e.g. max(100%,120%) ) when
a) calling it while evaluating the font-size property
b) calling it while evaluating the border-top-width property

I observe in the first Note in section 5.11 that a <percentage> value that is not interpreted as "auto" is a valid <length> value. Section 5.10.1 states that both arguments to max() must have the same unit power, which is true for two <length> arguments because they have a unit power of one.

The font-size= property is inherited, so the resulting length would be relative to the inherited font-size value.

The border-top-width= property is not inherited, but the specification does not allow the percentage data type to be used for this property. Where percentages are allowed for non-inherited properties, explicit documentation covers the interpretation of what a percentage means.

So I'm assuming that for font-size= you would get 1.2em and for border-top-width it would be ignored or throw an error.

But I'm only a stylesheet writer, not an engine implementer, so it might be best to hear definitively from a member of the committee.

I hope this helps.

............................ Ken

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