ubuntu-phone team mailing list archive

[Alan Bell <alanbell@xxxxxxxxxx>]

At the moment the devices don't support rotation. I don't think rotation 
is the same thing as a window changing size and aspect ratio, I think 
there is a bit more to it than that. Some applications will want to be 
portrait only, some will want to be landscape only. Some may want to 
display a different UI in each orientation (like a calculator being 4 
function in portrait and scientific in landscape). If there are multiple 
applications in the switcher list dragging from the right will drag 
across some in portrait and some in landscape, so you will have both on 
screen at the same time, at least partially. Do applications get their 
coordinate space remapped externally, so internally to the application 
it always thinks "up" is the same direction, or do applications get told 
to rotate themselves and have to figure out if they rotate by 90 or 270 
degrees? What happens if you continuously slowly rotate the device, does 
it continue to rotate or jump backwards when you go past 360 degrees? Is 
there animation effects for the transition between orientation states? 
Are we going to support the mozilla html5 api extensions for orientation?

https://wiki.mozilla.org/B2G/QA/WebAPI_Test_Plan/Screen_Orientation

What happens when an application that wants to always be portrait ends 
up on a TV?

Alan.

--
I work at http://libertus.co.uk