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Subject: Re: [cgmo-webcgm] convert-to-absolute [was: Re[2]: [cgmo-webcgm] Style properties]


Hi Lofton,

Please note that section 5.4.1.3 still has a TO DO. I'm not sure we
have the concept of Used Values in WebCGM. I couldn't come up with an
example.

The CSS 2.1 text is this:
"Computed values can be relative to each other; for example a width
could be set as a percentage, which is dependent on the containing
block's width. The used value is the result of taking the computed
value and resolving these dependencies into a final absolute value
used for the actual layout."

Can you think of a scenario that would demonstrate we do have Used
Values?

In general, I think this sub issue is a very minor one and should be
ignored for now. We may want to adjust the wording, but that can be
done later (in my opinion).

-- 
 Benoit   mailto:benoit@itedo.com


Tuesday, May 17, 2005, 7:40:13 PM, Lofton wrote:

LH> At 02:58 PM 5/17/2005 -0400, Benoit Bezaire wrote:
>>[...]
>>
>>LH> Btw, do we have a contradiction within 5.4?  The 1st pgph of
>>LH> 5.4.1.2 says, "[computed values] ... for example relative units (%)
>>LH> are computed to absolute values (NVDC)."  But the 2nd pgph of
>>LH> 5.4.1 says, "...then resolved into a value that is used for
>>LH> inheritance(the computed value), then converted into an absolute
>>LH> value if necessary(the used value), then..."  [...later
>>LH> addition... I just checked CSS2 -- same confusing overloading of
>>LH> the term "absolute" there.]
>>I don't see the contradiction, could you explain.

LH> -- 5.4.1.2:  "relative units are computed to absolute values", at the
LH> Computed Value stage
LH> -- 5.4.1:  "converted to an absolute value if necessary", at the Used Value
LH> stage

LH> Having checked CSS2,
LH> -- the first convert-to-absolute (5.4.1.2) refers to things like % to NVDC.
LH> -- the second convert-to-absolute (5.4.1) refers, for example, to things
LH> that are defined as a percent of the actual display box to be used.

LH> There isn't any contradiction.  But it's confusing (and that's the way it's
LH> written in CSS2).

LH> -Lofton.




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