- From: Christoph Päper <christoph.paeper@crissov.de>
- Date: Mon, 7 Apr 2008 22:45:37 +0200
- To: CSS Style <www-style@w3.org>
L. David Baron: > > The 'resolution' media feature has two new units, 'dpi' and 'dpcm'. > Are these "dots" supposed to be device pixels or CSS pixels? I think it's obvious that the intention was to have the query refer to device pixels. I might make sense to call device pixels 'dots' in CSS context, which is what the 'd' is representing here. Anyhow, I believe the unit abbreviated by 'dpcm' here is virtually unused elsewhere. When asked for the device resolution in metric measures, one usually gives the diameter or width (equals height in many cases) of one dot measured in micrometres (µm) or millimetres (mm). I would much prefer this reciprocal method in the spec, although I admit that 'dpi' is seen more frequently. It doesn't need a new type of units, because any absolute length unit could be used, but 'um', the ASCII-compatible representation of 'µm', would be a nice addition.
Received on Monday, 7 April 2008 20:46:12 UTC