ubuntu-touch-coreapps team mailing list archive

[Bruno Girin <brunogirin@xxxxxxxxx>]

Calum,

I'm glad you like the ripping off idea :-)

I have one use case that is not mentioned in the user journeys and that
I can do with any desktop calculator because of the way = generally
works. Say I wanted to calculate the following bill:

Paper:        30
Biz cards:  + 50
Pencils:    + 20
          -------
Total:     = 100
VAT:       x 1.2
Total:     = 120

The reason why it works on a desk calculator is that once I type =, the
total becomes the last number in the stack and any additional operation
after that applies to the total. It looks like the key journeys should
accommodate that but wanted to confirm that it was the case.

Cheers,

Bruno

On 11/03/13 14:13, Calum K Pringle wrote:
> Hey Bruno,
>
> Excellent idea about ripping off the history tape - love it.
>
> I think we can explore the visual treatment of the number being
> currently edited. The only editable number is the last entry, it might
> be a different colour or something too.
>
> For clearing, pressing C clears the current entry. To remove the
> entire calculation you swipe the tape to the side.
>
> Sorry for the delay! Think we captured this on our blogpost too
> : http://design.canonical.com/2013/03/app-patterns-applied-calculator-key-journeys/
>
> Calum
>
>
>
> On 4 Mar 2013, at 20:45, Bruno Girin wrote:
>
>> Hi Dalius,
>>
>> That looks good except for the following:
>>
>>   * There's no backspace,
>>   * The C key clears the whole calculation and starts a new one
>>     rather than clearing the last number entered.
>>
>> As a result of both of the above, if you make a mistake, you have to
>> start all over again. So you need a simple way to rip off a
>> calculation sheet so that you can go to the next one while not making
>> it a feature of the C key: what about just using that exact touch
>> paradigm? Pull the last calculation sheet up to rip it off and put it
>> on the stack?
>>
>> Another glitch is that it is difficult to see what number you're
>> currently editing: I understand that it's the last one on the stack
>> but you have to know that, there is no other indicator. If you were
>> to add a backspace key on the right of the number being edited a la
>> Jolla, that would resolve one of the problems above and act as a
>> marker of what number you are currently editing.
>>
>> Bruno
>>
>> On 04/03/13 20:18, Dalius wrote:
>>> Hi,
>>>
>>> Riccardo Ferrazzo demonstrates one possible approach for simple
>>> calculator mode:
>>>
>>> https://plus.google.com/u/0/107254607903065031665/posts/hYNwdXFRhvK
>>>
>>> Direct link to YouTube
>>> video: http://www.youtube.com/watch?v=ncZUuPgA93w&feature=youtu.be
>>>
>>> Code here for those who want to try it
>>> out: https://code.launchpad.net/~f-riccardo87/ubuntu-calculator-app/new-design
>>> <https://code.launchpad.net/%7Ef-riccardo87/ubuntu-calculator-app/new-design>
>>>
>>> Regards,
>>> Dalius
>>>
>>>
>>
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