[Gambas-user] painting graph to image continuously

[wally]

On Sunday 19 December 2010 11:33:39 Fabien Bodard wrote:
> 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
> 


Fabian,

thank you very much, This is interesting, i tried to paint and got "already 
drawing" message when applied paint inside _draw event.
Need to study your version first.

wally