ubuntu-phone team mailing list archive

[Thomas Poulsen <thomas@xxxxxxxx>]

Den 02-03-2013 22:03, Dalius skrev:
> Hi,
>
> So with calculator we have following problem: we have not followed 
> completely proposed design from Canonical and made it more 
> complicated. Basically question is if we should show less in screen 
> (as in design) or more (as implemented). Less will mean that we would 
> need to remove scientific buttons and some other functionality now. 
> That adds some limitations as well IMO. I would like to hear community 
> opinion and preferences.
>
> Here I have tried to sum up what problems I see with too much simplicity:
> http://devblog.sandbox.lt/ubuntu_phone_calculator_design.html
>
> Regards,
> Dalius
Hi Dalius,

I really like your work on the calculator app.
In particular, I find the continuous evaluation model and lack of "=" 
button refreshing.
Likewise the lack of explicit multiplication in the expression '2 
sin(?/2)' is awesome.
In your demo, https://www.youtube.com/watch?v=17fG82OfX04, the 
expression is entered as
5×6+(2sin(?/2)). It would be perfect, if you can enter it just as 
5×6+2sin(?/2).

You model has a lot of advantages, and I think it will be perfect for a 
scientific or advanced mode of the calculator app.

In the basic mode, which Canonical is focusing on, I think your 
stationary example can be solved by keeping the multiplications 
together, and only change to a new line at addition (and subtraction).

That could look a bit like:

Pencils:         5×1.05=5.25
Paper:   +     7×10.00=70
Scissors: +8×28.79=230,32
-------------------------------------
Total:                        305,57

A new line is created when '+' or '-' are pressed, not when '×' or '÷' 
are pressed.


Personally, I prefer '/' over '÷' for division, as I find '-' and '÷' 
too similar, and '÷' is sometimes used for subtraction, where I come 
from (Denmark).

Please keep up the great work on the calculator - it is a pleasure to 
follow.

All the best,
Thomas