On 7 April 2014 19:42, Alexandre Bergel <[email protected]> wrote:
> Hi!
>
> How can a form be quickly displayed in a surface? Is it correct to do?
>
> athensCanvas pathTransform restoreAfter: [
> athensCanvas setPaint: self form.
> athensCanvas draw ]
>
> Apparently, the root is AthensCairoSurface>>#fromForm: is really slow. How
> to have a fast bitmap rendering in Athens?
>
> yes, converting from form to paint is slow, because it copies contents
(form's bits)
into new cairo surface.
to speed things up , cache the result:
athensCanvas pathTransform restoreAfter: [
paint := ( canvas cacheAt: self form
ifAbsetPut: [ (self form asAthensPaintOn: canvas) ]).
athensCanvas setPaint: paint.
(and before saying draw, you have to set shape first, isn't?)
athensCanvas setShape: ....
athensCanvas draw ]
> Cheers,
> Alexandre
>
> --
> _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:
> Alexandre Bergel http://www.bergel.eu
> ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.
>
>
>
>
--
Best regards,
Igor Stasenko.
