[Gambas-user] ncurses component

[tobi]

On Wed, 28 Mar 2012, Benoît Minisini wrote:
> Le 28/03/2012 21:29, tobi a écrit :
> > hi,
> >
> > On Mon, 26 Mar 2012, tobi wrote:
> >> On Mon, 26 Mar 2012, Rolf-Werner Eilert wrote:
> >>>
> >>> Am 25.03.2012 14:42, schrieb tobi:
> >>>> Benoît,
> >>>>
> >>>> do you think an ncurses component would be useful? i abandoned the X server with the beginning of
> >>>> the year and when i noticed that i would need a console ide for gambas, i began writing one (cut
> >>>> down to my personal needs of course) using ncurses library. as it went more complicated i
> >>>> appended it to the long queue of to-do projects ;)
> >>>> but yesterday i realised that having an ncurses component in gambas would make things a lot easier,
> >>>> the console ide could be written in gambas (what an idea!)
> >>>> on the other hand: who needs ncurses nowadays? what do you think, is it a waste of time or a
> >>>> valuable addition?
> >>>>
> >>>> (hope, the accent works, i searched about an hour for that - and can't even see the result)
> >>>>
> >>>> regards,
> >>>> tobi
> >>>>
> >>>
> >>> The accent works :-) And I like the ncurses idea, in fact I had such an
> >>> idea some time ago. Don't remember what I wanted to do with it, but
> >>> after realizing the complexity, I simply wrote some routines for colours
> >>> and stuff, the rest was purely playing around a bit. Nothing serious.
> >>>
> >>> Rolf
> >>>
> >>
> >> well, i'd volunteer but i can't estimate any time needed for a basically usable result.
> >> i'm an 11th grade student so more important things may pop up in near future... (in case you
> >> worry, i think (as a least instance) i'm capable of writing clean (concerning memory), structured
> >> and reliable code -- but as the ncurses faq says, the library doesn't like to free(3) its
> >> internal stuff for it may be needed later; unless you configure it to do so...)
> >>
> >> as soon as i figured out how to write components for gambas using the c interface, i'll start
> >> anyway...
> >>
> >> regards,
> >> tobi
> >
> > don't want to be annoying but:
> > after having to read about those nifty configure scripts, i'm to face the first obstacle.
> > this code works:
> >
> > -----
> > ' Gambas module file
> >
> > Public Sub Main()
> >
> >    NCurses.On()
> >    NCurses.Print("this is text", 10, 10)
> >    NCurses.Attributes = NCurses.Bold Or NCurses.Reverse
> >    Print " this is a brave test."
> >    NCurses.Print("next line", , 11)
> >    NCurses.WaitKey()
> >    NCurses.Off()
> >
> > End
> > -----
> >
> > but as the docs about programming components in c/c++ reasonably say, this is rather c-style and
> > not suitable for the gambas language. (at the moment, there is one static object NCurses - i want
> > to discover the api further before writing any serious classes).
> >
> > the Print() _function_ takes optionally x,y coordinates from which to print the text using ncurses.
> > i thought, it would be better to just use the Print instruction to print text instead of this
> > function all over again - this is just not aesthetic (but bearable?).
> > while the Print _instruction_ works fine for that - tried also with multiple ncurses WINDOWs
> > present - it always prints after the current cursor position, no matter what's there. that's the
> > same with the ncurses functions, the main problem is that i turned on some attributes which are
> > handled by the library, too. the text from the Print instruction doesn't get bold and video reversed.
> > consequently, one may never use Print instruction to stdout in ncurses mode and this option has
> > departed...
> > i had the weirdest ideas of redirecting stdout, to which Print prints, to a stream object inside the
> > ncurses component, reading from that and printing the data with the ncurses functions, but that's
> > quite too strange...
> >
> > any suggestions/ideas about a suitable interface for something that fundamental? or may the above
> > code fit? (i appear to not often use the ncurses mvwprintw() in any bigger thing without having
> > built a wrapper around it or controlled it via a loop, so this may really fit as is...)
> >
> > regards,
> > tobi
> >
> 
> Can we talk about that on the gambas-devel mailing-list please?
> 
> -- 
> Benoît Minisini
> 
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i heard of that list, but never seen it. i'll subscribe...