"Other" new variant problem

agraham

agraham

Expert
Licensed User
Longtime User
I've not really got my head around what "scale" does but I have a tablet that reports its GetDeviceLayoutValues as 480 x 800 Scale 1 so I am trying to make a custom layout for it. The app has the four "standard" layouts defined as well as the custom ones for the tablet. When run B4A correctly chooses the right layout but the control positions are wrong. The layouts were done on the emulator and I note that the control position values both in the designer and in the app on the device are not what I would expect but are those of a 320 x 480 screen.

I can't check what would happen with the Designer running on the tablet as it doesn't work over wireless :) (in joke of a sort!)

It would be nice if the designer indicated what device it was presently connected to. I've got three going at the moment.
 
agraham

agraham

Expert
Licensed User
Longtime User
Erel said:
Scale = DPI / 160.
Click to expand...
Yeah, I go that. It's what the Designer and the runtime do with it for different screen sizes that I haven't got worked out..

Try to create a single variant and see if it behaves properly.
Click to expand...
Just the same. It looks like the Designer or the runtime is not scaling up the co-ordinates to suit the screen size. It's also not scaling the control size, but I'm not sure whether you intend that or not. I assume not as the scale is 1 so the controls ought to stay the same physical size.
 
agraham

agraham

Expert
Licensed User
Longtime User
I suspect I was puzzled by Scale because I was expecting it to be more complicated than it actually is and do all sorts of clever adjustments to make things fit on different size screens.

In fact looks as though at layout time, having selected the layout file that best matches the device the Top, Left, Width and Height for each control are multiplied by a factor that seems to be StoredLayoutScale/ActualDeviceScale. Is this correct?

EDIT :- Or more likely ActualDeviceScale/StoredLayoutScale which better matches what I see happening.
 
Last edited:
Erel

Erel

B4X founder
Staff member
Licensed User
Longtime User
In fact looks as though at layout time, having selected the layout file that best matches the device the Top, Left, Width and Height for each control are multiplied by a factor that seems to be StoredLayoutScale/ActualDeviceScale. Is this correct?

EDIT :- Or more likely ActualDeviceScale/StoredLayoutScale which better matches what I see happening.
Click to expand...
Yes.

The variants themselves allow you to (pretty) easily create multiple layouts for multiple screens.
 
You must log in or register to reply here.
Top