Ideal screen rotation

Dave Ball openmoko at
Tue Nov 10 18:15:54 CET 2009

Rui Miguel Silva Seabra wrote:
> On Tue, Nov 10, 2009 at 12:08:06PM +0000, Dave Ball wrote:
>> However, what's the use-case for an application requesting either of the 
>> inverted states?  I can't see when those would be useful - in terms of 
>> hints the app would supply.
>> Obviously, if the WM was deciding orientation based on the device 
>> position, you would correctly rotate to the inverted states, but if an 
>> application is built for portrait or landscape is there any reason a 
>> developer would not want the "normal" portrait/landscape orientation for 
>> the device?
> Yes, certain devices may be better prepared (in terms of connectivity for
> power, usb, etc...) for one kind of landscape rather than the other.

Yup - although that would be at the device level rather than the 
application level.  If the WM knows what the device's policy is, I can't 
see a situation where one app wants to be in "landscape", and a 
different app wants to be in "landscape inverted" on the same device?


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