[Development] Scalable UIs in QtQuick (take 2)

[Welbourne Edward]

Andreas Hartmetz said:
> Arcminutes are a really good idea. The size of screen elements isn't
> really about physical dimensions, it's about size on retina (the
> actual biological thing ;) really, or legibility.
[...]
> If the system had "known" that the typical user to screen distance was
> 2-3 meters and acted accordingly, that wouldn't have happened.  Of
> course, you need to know the "typical viewing distance" for a screen,

So perhaps what we should be using to configure UI scaling isn't a scale
factor but this typical viewing distance; as long as the system has some
way to discover the physical dimensions of the screen and its pixels, it
then know everything it needs to scale the UI sensibly.

	Eddy.