[Pharo-dev] [Moose-dev] How ready is Bloc for a simple use-case?

Aliaksei Syrel alex.syrel at gmail.com
Wed Feb 22 16:05:14 EST 2017


We could try to do it together and maybe even make a video (stream) of
implementation process :)

Cheers,
Alex

On 22 February 2017 at 22:02, Aliaksei Syrel <alex.syrel at gmail.com> wrote:

> Hi Peter
>
>  I wanted to ask about Bloc:
>
> Thanks for your interest :)
>
> 1) how stable is the API? e.g. if some overhaul changes to unify/whatever
>> are planned
>
>
> Api itself is in "final" state, however naming might be improved (changed
> with or without depreciations). But don't worry user-side api is already in
> a very good shape, at least from our perspective :)
>
> 2) I saw in the techtalk that you can align elements (to center, bottom,
>> ...), however is that possible with lines? Lines have to rotate, morph
>> shape, etc.
>
> 3) Are non-straight lines possible? (e.g. bezier, arc)
>
>
> Exactly :) Lines are just bloc elements as anything else: buttons, text
> images. They can be linear, can be arcs or bezier curves (both quadratic or
> cubic). Default canvas used for rendering in Bloc (SpartaCanvas) has very
> good support of vector shapes and lines.
>
>  The idea for me is to make a simple mindmap
>>         - elements with some text, icons, math symbols inside
>>         - connectors (non-straight lines) between elements
>
>
> It is very doable. Please, don't forget that Bloc is a low level framework
> that does not contain any widgets (existing ones will be deleted,
> especially BlLine, BlText and BlTextElement). The only responsibility Bloc
> has is to provide a basic infrastructure that does not put any constraints
> on users. Which means that if you want to have a bezier line you have to
> subclass BlElement, implement corresponding accessors for anchor points and
> override drawPathOnSpartaCanvas: in order to display you line. You can
> learn more about canvas by checking SpartaCanvas class comment and method
> comments in 'api' protocol.
>
> Layouts, alignment, transformations are part of bloc and are available to
> all subclasses of BlElement.
>
> Cheers,
> Alex
>
> On 22 February 2017 at 21:32, Peter Uhnak <i.uhnak at gmail.com> wrote:
>
>>  Hi,
>>
>>  I wanted to ask about Bloc:
>>
>>  1) how stable is the API? e.g. if some overhaul changes to
>> unify/whatever are planned
>>  2) I saw in the techtalk that you can align elements (to center, bottom,
>> ...), however is that possible with lines? Lines have to rotate, morph
>> shape, etc.
>>  3) Are non-straight lines possible? (e.g. bezier, arc)
>>
>>  The idea for me is to make a simple mindmap
>>         - elements with some text, icons, math symbols inside
>>         - connectors (non-straight lines) between elements
>>
>>  To me (apart from the lines) it seems like it should be already doable.
>>
>>  Also either my (Morphic) Pharo is really slow, or Bloc (in the video) is
>> superfast (everything is happening instantly).
>>
>>  Thanks,
>>  Peter
>> _______________________________________________
>> Moose-dev mailing list
>> Moose-dev at list.inf.unibe.ch
>> https://www.list.inf.unibe.ch/listinfo/moose-dev
>>
>
>
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