On 23 January 2013 12:58, Esteban Lorenzano <estebanlm@gmail.com> wrote:
Hi Fernando,
I don't want a Form... quitte the opposite! :) What I want is to have something equivalent to athens to what now is covered in morphic with ImageReadWriter.
Or, better explained, I want an AthensImageReadWriter who answers me a surface (or something that I can draw with an athens canvas) with the image from a file :)
You know that you can convert between forms and athens surface? Forms is actually not that bad, they simply contain bits. The bit format information is a bit obscure (comparing to OpenGL, for instance), but its enough. So, i suggest you to use form and ImageReadWriter.
Esteban
On Jan 23, 2013, at 12:06 PM, Fernando Olivero <fernando.olivero@usi.ch> wrote:
What you can with Athens and the Cairo backend is:
1) create a surface in memory 2) draw to the surface 3) export that surface to a png 4) import that png into a form
The main point is step 3, cairo can export any surface to a png. Then within Pharo, any form can be created from a png.
But that is private to cairo library.
Also, if you interested in drawing from Athens into a form directly, look at the AthensDemoExamples, and Igor's magic trick of matching the bits of the surface (step 1), directly to the bits of an "external" form. to avoid steps 3 and 4. He used the surface plugin for that.
Hope i answered all your questions, though not sure because i've never used ImageReadWriter.
Fernando
-- Best regards, Igor Stasenko.