[Webkit-unassigned] [Bug 11644] Absolute lengths assume 96.0 DPI

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Tue Jun 24 14:13:05 PDT 2008


------- Comment #12 from andrejohn.mas at gmail.com  2008-06-24 14:13 PDT -------
It is now 2008 and MacOS X 10.5 has resolution independence, but from my tests
I still see that specifying 6cm in a style sheet does not result in 6cm on

A quick test with Opera 9.5, Firefox 3 and Safari 3 shows that a table
specified to have width of 8cm is rendered to be 6.9cm, so at least they are
consistent with each other. I tested on a 15" MacBook Pro (Core Duo) at native
resolution. I assume they are all following the 96dpi assumption. I don't know
the actual dpi of my screen, so I can't check.

I see the section in the specifications where it is indicated the resolution
assumption for a pixel (CSS2 section 4.3.2), but for cm all I see is section
4.3.2 of CSS2 where it says:

  "Absolute length units are only useful when the physical 
   properties of the output medium are known."

CSS1 says the same thing in section 6.1.

For this reason I ask myself if the not rendering a cm as a real world cm is
indeed an issue of misinterpretation? 

Are there any plans to address this issue?

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