ubuntu-phone team mailing list archive

[Calum K Pringle <calum.pringle@xxxxxxxxxxxxx>]

Hey Bruno,

Yeh sorry we perhaps should have mentioned that in the blog post, when you press '=' you can then use operators to act on that number ('x','+' etc). Only by 'ripping off' the calculation do you start fresh. 

Calum


On 11 Mar 2013, at 22:44, Bruno Girin wrote:

> 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
>>>> 
>>>> Regards,
>>>> Dalius
>>>> 
>>>> 
>>> 
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>> 
>