guile-fltk is a module for
Guile
that binds the
Fltk widget library to
scheme.
Fltk, or the "fast light tool kit", is an LGPL'd C++ widget
library that supports X, win32, and OpenGL.
If you have never heard of Fltk, you
might be interested in reading a summary of
Fltk's features.
Guile is the GNU project's extensibility language. It is
a powerful scheme interpreter that can easily be embeded
into other applications.
guile-fltk intends to provide a Guile binding to Fltk that is
robust and powerful.
I originally started writing guile-fltk so that
Extreme Wave, the 3d
modeller I am developing, could have an extensible user
interface (in much the same way Mel can extend Maya).
I am also distributing it seperately under the LGPL,
because I think it is a rather nice widget toolkit
with an intuitive API that other programmers might find
useful. At present,
guile-fltk should be considered beta quality software.
Some things have been tested better than others, and there may
be a few more minor API changes before the 1.0 release.
Feel free to email me or to post
any questions you might have on the Extreme Wave mailing list.
I'm very interested in hearing from anyone that tries to use
guile-fltk in their own projects.
The latest version of guile-fltk includes a "hacked" version of
fluid (the Fltk graphical interface designer) that can generate
scheme code for interfaces. Check out the tutorial!
Guile-fltk is able to generate it's own
documentation. One of the examples prints out an
alphabatized list of all the available scheme functions
and a breif description.
For a more
in depth reference, please refer to the Fltk
documentation for widget methods and syntax. The
guile-fltk methods are usually named extrememly similarly
to the original c++ methods. Most changes in style and
syntax are just to make the binding more schemish.
For example, Fl_Button obj->clear()
would be written as (fltk-button::clear obj) in
guile-fltk. Several of the demos from Fltk are re-written
in scheme as demos for guile-fltk -- these may serve as
a good reference.
guile-fltk looks *exactly* like Fltk. But here's a screenshot
if it makes you feel better, (yes, there are better demos than this!)
(define window (fltk-window::new -1 -1 300 180 "Hello World Window"))
(define box (fltk-box::new 20 40 260 100 "Hello, World!"))
(fltk-widget::set-box FL_UP_BOX)
(fltk-widget::set-label-font box (+ FL_BOLD FL_ITALIC))
(fltk-widget::set-label-size box 36)
(fltk-widget::set-label-type box FL_SHADOW_LABEL)
(fltk-group::end window)
(fltk-window::show window)
(fltk-fl::run)