On 07/24/2018 06:06 AM, Carsten Haitzler (The Rasterman) wrote:
actually no. this is where users and many toolkits and apps get it totally
wrong. so you specify font size. what about icons and other elements then?
that is precisely why efl just uses a "scale" factor. a single number (1.0
being the default, 2.0 == 2x as big etc.) where everything that can scale is
multiplied by that value, and that value is farmed out to the user to decide
what works best for them. enlightenment has an option to calculate the scale
factor based on dpi (with a base dpi of X == 1.0) using the real physical dpi
to do it. this is one of the first questions enlightenment asks in its wizard
giving you a whole bunch of options to choose from with previews so you pick
what looks right. but this only affects efl/e.
another way users/toolkits do this is "set dpi". you DO NOT SET dpi. dpi is a
property o the screen (and its current resolution). SETTING it to get
something to scale up is NOT right. now, if you do, apps that want to actually
display something at a specific physical size on the screen (15x33mm for
example) can't because dpi is now wrong. dpi is directly related to screen
size, and querying screen size is now no longer a way to figure out what kind
of screen you might have (~32"+ tv? desktop (~19-30")?, laptop (~10-17"),
tablet (~7-10")? phone(~3-7") etc. (yes. things play guessorama based on these
kinds of things to alter behaviour to fit that kind of device, but if you
fake dpi then these guesses are going to be wrong).
I fully agree and I illustrate it : my laptop is 14'' and 1920x1080, and
I have a second screen 24'' and 1920x1080 !!
So "scale" factor is a good solution. But...
It does not work : the scale factor should be different for each screen.
There is a "Scale" factor in the "Screen Setup" but it has no effect
(in last git version).
What do I miss ?
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