On 7 April 2014 19:42, Alexandre Bergel <alexandre.bergel@me.com> 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

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Alexandre Bergel ��http://www.bergel.eu
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Best regards,
Igor Stasenko.