| Thread Previous • Date Previous • Date Next • Thread Next |
On 06/12/2012 08:59 PM, Alan Bell wrote:
At 204 DPI the unity launcher will be by default 48/204 inches, or 6mm wide (tweakable to sizes between 4mm and 8mm). The top panel would be 3mm high. Do we have a design plan for dealing with the challenges that high resolution displays might present?
Varying pixel density across devices means layout should be abstracted from absolute pixel values.
Specifying absolute size on the screen (mm) is not sufficient, because you have to take viewing distance into account, which might be 25 cm (maybe even less) for a hand-held device, should be at least 50 cm for a monitor and can be several meters for huge displays and projections.
So ideally all sizes on screen should be calculated depending on PPI, average viewing distance for the device and a factor for the user's visual acuity and preference. You have to deal with arc minutes for the relation.
A complication is that you want thin lines and details to be lined up with the pixel grid, as otherwise things become blurry. That's the reason you can't get good results by scaling a single icon drawing to any size. This becomes less of an issue with increasing pixel density, when you approach the point where the thinnest visible line could be several pixels thick (even at a nose-length distance).
-- Thorsten Wilms thorwil's design for free software: http://thorwil.wordpress.com/
| Thread Previous • Date Previous • Date Next • Thread Next |
