[Cuis-dev] [ANN] Experiment with Cairo graphics [UPDATE]

[Mariano Montone]

Sure! Hopefully we can find some collaborators there :)

How shall we proceed? You create the repo?

Mariano

El 13/10/19 a las 10:38, Juan Vuletich escribió:
> I'd love to have this at the Cuis Smalltalk GitHub org!
> 
> Cheers,
> 
> On 10/12/2019 2:57 PM, Mariano Montone via Cuis-dev wrote:
>> Hello.
>>
>> Just an update. Performance is much better now (because of image
>> caching) and the segmentation bug in browser is side-stepped (not fixed,
>> though). So, it is possible to use Smalltalk browsers.
>>
>> TODO: Better font rendering and image blending.
>>
>> Cheers!
>>
>> Mariano
>>
>> El 9/10/19 a las 13:49, Mariano Montone escribió:
>>> Hello!
>>>
>>> I've doing some experiments with Cairo graphics in Cuis. I'm doing it
>>> via FFI.
>>>
>>> If you want to have a look, you have to load these:
>>> https://bitbucket.org/mmontone/mold/raw/master/Cairo.pck.st
>>> https://bitbucket.org/mmontone/mold/raw/master/CairoMorphic.pck.st
>>>
>>> There's a Cairo FFI wrapping class, a CairoContext with fluid api, and a
>>> CairoCanvas for Morphic.
>>>
>>> Note that I've spent only a couple of days on this, so it is not ready
>>> for anything very useful yet, but I'm planning to try to use in a
>>> diagrams library I'm building.
>>>
>>> Some interesting expressions to try:
>>>
>>> CairoCanvas displayWorld.
>>> CairoCanvas displayWorldScaled: 0.8 at 0.8.
>>> CairoCanvas displayWorldRotated: -10.
>>>
>>> To switch Display to Cairo canvas based one:
>>>
>>> CairoDisplayScreen install.
>>>
>>> IMPORTANT: there are segmentation faults when browser methods are opened
>>> (because of a bug in TextComposition rendering), so open all classes
>>> methods before trying the expressions above.
>>>
>>> Other issues: text rendering is very basic, uses Cairo toy api
>>> cairo_show_text. And images don't get blended right.
>>>
>>> Have fun!
>>>
>>> Mariano
>>>
> 
>