On 7/5/15, Alain Plantec via Pharo-users <pharo-users@lists.pharo.org> wrote:
> {no text body}
In his thesis
Dynamic Language Embedding
With Homogeneous Tool Support
http://scg.unibe.ch/archive/phd/renggli-phd.pdf
Lukas Renggli p 2 mentions internal DSLs.
<citation>
Internal languages make a creative use of the host lan-
guage. They integrate seamlessly into the host lan-
guage and tools, but their syntax and semantics is
strictly constrained.
</citation>
Speaking of GUI construction in Smalltalk for the Widget part you
might consider that to be a library or API. For making use of the
widgets you may think of an internal DSL.
In addition the widgets as such might be rendered differently for
different platforms (in Smalltalk in one of the GUI frameworks, an
example was Squeak Morphic and MVC ) or outside (e.g. Kivy).
@Hilaire, what do you think is outstanding of special about Kivy?
I think to illustrate this it might be a nice experiment to develop a
'hello world' equivalent for GUI construction and have it rendered in
as many user interface languages as possible (Kivy, various types of
Morphic, Bloc etc., but as PPTX and ODP)
The domain to be covered should be simple as to avoid making the
exercise complex.
Coming from a hello world type program means that at least a
picture and some
interaction (mouse click and keyboard) has to be added.
A model which fulfills this and at the same time is useful as is for
certain contexts:
a sequence of slides (think 'simple Powerpoint slide show')
with the follwoing slide types
- one image and one caption
- on text field only
reaction to click event to advance to the next slide
reaction to cursor left and cursor right to navigate through the slides
and then rendering of the "GUI hello world program" in various languages
https://en.wikipedia.org/wiki/User_interface_markup_language
Another application domain for this is a picture book.
--Hannes
