[Pharo-dev] Athens Re: TxText model

Nicolai Hess nicolaihess at gmail.com
Thu Apr 7 03:32:57 EDT 2016


2016-04-06 16:58 GMT+02:00 Igor Stasenko <siguctua at gmail.com>:

>
>
> On 6 April 2016 at 17:07, Nicolai Hess <nicolaihess at gmail.com> wrote:
>
>>
>>
>> 2016-04-06 10:56 GMT+02:00 Igor Stasenko <siguctua at gmail.com>:
>>
>>>
>>>
>>> On 6 April 2016 at 11:36, Nicolai Hess <nicolaihess at gmail.com> wrote:
>>>
>>>>
>>>>
>>>> Thanks Igor.
>>>> Maybe some more Info? (I don't have much experience with this and don't
>>>> fully understand what is missing).
>>>>
>>>>
>>>>> 1. No support for vector graphics
>>>>>
>>>>
>>>> I know some parts of Athens (with Cairo font renderer and how it is
>>>> used in TxText) but at the moment
>>>> rendering a TextMorph in Athens works:
>>>> Morph comment asText asMorph openInSceneView
>>>>
>>>
>>> Sorry, missed to reply to that important point.
>>> It works because one good soul spent effort and helped me to finish
>>>  implementation of a wrapper for Morph, to be able to render any morph into
>>> Form, and then render Form
>>> on Athens surface.
>>>
>>
>> Nah, actually it works a bit different. Many (Form)Canvas methods are
>> reimplemented on Athens API. But yes, I used some hacks as well.
>>
>>
>
> Didn't knew.
> Aha.. i see AthensCanvasWrapper.
> Ohh.. that's so much pain :)
>
>
As you are here and in a good mood for feedback, can you please answer some
Athens questions or review some code changes / issue entries?

I added some instance variables for AthensCairoPatternPaint
(origin, extent) This was needed for converting Morphics GradientFillStyle
to Athens pattern
paint. But I am unsure if this was the intended way to use them.

I am interested on issue
14800 AthensCanvas clipRect oddity (Aliaskei thinks the current behavior is
on purpose ,but I am not sure).

AthensPathSegment:
I understand how they use the visit: messages but I don't understand the
#accept: or the #sendCommandTo: methods, are they used?

Aliaksei fixed a bug in
CairoFreetypeFontRenderer>>#glyphsOf:from:to:
(the bug was: sometimes, some characters uses glyphs with wrong size).

I think some AthensText classes are obsolete:
AthensTextScanner/AthensParagraph/AthensTextMorph/AthensPluggableTextMorph
Can we remove them?




>
>
>> So, that is why it 'works' :)
>>>
>>>
>>> --
>>> Best regards,
>>> Igor Stasenko.
>>>
>>
>>
>
>
> --
> Best regards,
> Igor Stasenko.
>
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