well, i've been asked to create some demonstrations of the use of python with fontforge - not just "little scripts" but entire dialog boxes which will do the same job as the existing menu options. ultimately, the goal is to replace every single menu option with an equivalent. ok - the goal is for me to prove that even one dialog can be replaced, such that other people can realise it's possible. and, importantly, whilst replacements for the menu options are being developed, font developers can continue to use either the replacements or the existing code.
why do this at all?
well, fontforge's widget set was developed from scratch at a time when widget sets didn't handle unicode (which fontforge has to) and many more things which are listed on the fontforge FAQ. however, as time has progressed, _some_ features of widget sets - not all - have caught up. for example, the FF FAQ states that GTK can only do one type of RGB bitmap but FF requires several, and so on.
but, some of the fontforge input boxes are... archaic: for example there is no mouse-wheel-driven input widget, so font developers are forced to type in numbers (which often involves them looking down at the keyboard, not at the screen).
to replace such widgets and to generally make any kind of UI changes is... tiresome, as the code - including its widget set - is entirely written in c.
so, to make the job easier, the experiment is to implement an example menu option in several different python-based widget sets, and see which one flies. personally, i like pyjamas, not least because - believe it or not - its use means that fontforge could turn into a client-server application (!) using JSONRPC to get at the data, and the front-end GUI could be run in a modern web browser.
but, to be a proper experiment, several widget sets will be tried. so far i have a pygtk / cairo experiment up and running, and also a pyjamas (gwtcanvas) one. all really quite exciting. ultimately, it is hoped that it will be possible to use fontforge-nox with python bindings, and drop the main fontforge window, replace it with pygtk / pyjamas / pyqt4 / pyclutter and... done!