[Gambas-user] painting graph to image continuously

Fabien Bodard gambas.fr at ...626...
Sun Dec 19 11:33:39 CET 2010


This is the vectorial vertion (use the painter class)

2010/12/18 wally <wally at ...2037...>:
> On Saturday 18 December 2010 14:44:22 Fabien Bodard wrote:
>> ok wally this is the full demo of what you want to do, and what you
>> need to do for that. I use like often in gambas
>> a data/view model ... the drawingarea is just a viewer for the data
>> and the _draw event contain the rules do draw the datas.
>> The datas are stored in an array $aDatas.
>>
>> The Timer emulate the datas entry
>>
>> 2010/12/18 Fabien Bodard <gambas.fr at ...626...>:
>> >> Fabian,
>> >>
>> >> yes, you are right, this may be a problem.
>> >> I will try to collect the data as short as possible in a data-array
>> >> and display always only the graph of a segment of this array.
>> >> Your DemoGraph was helpful to see how the _draw event is
>> >> used and i'll try this way too.
>> >> But for now i would like to know how the DrawingArea.Resize
>> >> works internally and why there are differences in GB2 and GB3.
>> >>
>> >> wally
>> >>
>> >
>> > Resize is a procedure inherited from control ... it just resize the
>> > controle ... but can have conflict with autoarrangement.
>> >
>> >
>> >
>> > --
>> > Fabien Bodard
>> >
>>
>>
>>
>> --
>> Fabien Bodard
>>
>
>
> Fabian,
>
> thanks a lot for your hits and deno files !  :)
>
> Please have a look on the attached design and let me know your opinion
> about this. Draw is little more ugly than paint or cairo but i can live with
> that  (for now)
>
> wally
>
>
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-- 
Fabien Bodard
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