I threw together a (very) rough mockup to explain a few of the ideas I mentioned last week:

Again, super rough, and lots will change. Salient points:

• Text preview windows. They’re using Markdown converted to HTML and styled with CSS. The idea is to be able to see how your changes affect the typeface when it’s being used on a page (and with the age of ereaders, it’s good to be able to test light on dark as well).
• Revisions. Ideally, it’d be nice to have a preview pane showing a page using an older revision and a preview pane showing your current work, so you can see if your changes are better or worse. And being able to revert to an older revision would reduce the stress of trying things out. (Hmm, I wonder if branching ala Git would be worthwhile…)
• Glyph code. Under the glyph, you can see some rudimentary code describing the glyph. I’m not sure this is the syntax I’d use, but it’d be something fairly similar. (Point type, point coordinates, and then zero to two control points.)
• Regular + italic. As you can see in the preview windows, I want to make it easy to preview italic along with the regular. I don’t know yet what ramifications this has for the font view or glyph editing, but I’ll figure it out.

What I’m not including in this mockup:

• A tool palette. I’m not sure yet if I want to have one at all, actually. With the heavy emphasis on keyboard shortcuts (and with a search that knows about tools), I don’t know if I need one. Or at least not a traditional palette. We’ll see.
• Settings menus for each window. Still not sure how I want this to work, but it would be similar to the side panels in Blender.

And of course there’s a lot more to figure out and work through.

As I start getting more into designing type, I’m finding that I’m not as happy with FontForge. It works, yes, and I can design fonts with it, but it’s not beautiful, aeshetically or functionally. It doesn’t sing. It also has a lot of friction that slows me down. I’ve looked at the other font editors out there — FontLab, RoboFont, Glyphs — and they don’t really do it for me either. (Nor are they in my budget at the moment.)

I realized I’ve been spoiled by Vim and Blender, both of which have steep(ish) learning curves but which also are incredibly rewarding and efficient for power users. I want that kind of a tool to use when designing type. So, because this is me, I’m going to build one.

Well, sort of. I’m going to talk through the design out loud on here as I go along, occasionally building prototypes to better explain what I’m getting at. I’m sure at some point I’ll actually build it, since I already want to use it instead of FontForge, but for now I need more experience building type with existing tools so I can better know where the friction points are.

I’m calling it Curves, and yes, it’s partly tongue-in-cheek. Here’s a brief overview of some of the ideas behind it (some of which are already in existing font editors):

• Power tool for advanced users. Reading about Douglas Englebart’s philosophy on computing has gotten me itching to make power tools instead of newbie tools. There’s nothing wrong with newbies, but I’m more intrigued by the idea of focusing on power users. Learning curves are okay. (Weak pun semi-intended.)
• Web-based. Originally I wanted to make this a desktop app like Vim or Blender, but the more I looked into it, the less interested I got (C/C++ no longer appeal to me, and doing the UI in OpenGL to be cross-platform would put me at a lower level than I’d like, since I didn’t really like any of the OpenGL UI toolkits I looked at). Besides, all my recent experience is in web stuff, and being able to edit fonts from anywhere will be nice. (I think seeing Tridiv yesterday helped cement this decision for me, by the way.) Also, since web fonts are one of the main targets of an app like this, being able to load and preview the fonts in-browser will be a big plus. And web services have a lot of potential.
• Panes. I really, really love Blender’s windowing system, with non-overlapping panes. (Vim has something similar, though I don’t really use it that much.) I also love being able to easily store different layouts for different uses. With type design, this kind of setup feels like the right choice and would make it so much easier to switch between different parts of making type (designing glyphs, spacing/kerning, previewing text, OpenType features, etc.).
• Heavily keyboard driven. I’m thinking about possibly using chording and/or sequences (the latter ala Gmail, thanks to Mousetrap). Everything customizable, of course. At this point I’m thinking of borrowing Blender’s shortcuts for selecting (‘a’), moving (‘g’), scaling (‘s’), and rotating (‘r’) points, since they’re all on the left hand, which frees your right hand for the mouse. But we’ll see.
• Command line. I don’t mean running it from the Unix command line, but rather that I want a command line as an integral part of the app. Command lines are really, really powerful, and the idea of one specifically tuned for designing type makes me giddy.
• Search. Not just searching for glyphs by name, but a powerful query syntax so I can easily get a list of glyphs wider than X or with left sidebearings smaller than Y or what have you. And saved searches, of course, like smart playlists in iTunes.
• Scripting. Of course. Python or JavaScript. I’m looking forward to being able to generate kerning pairs via Python rather than having to do that outside of the app and paste the resulting pairs in. Or being able to script a set of things to do just before exporting to OTF (like removing overlap and checking for points at extrema and stuff).
• Focus on designing text faces for use as body copy. I’m still not sure what that actually means in practice, but some ideas are: previewing pages of text instead of just lines; editing and previewing the italic and bold weights together with the regular (rather than as separate fonts); programmatic relationships between regular and italic and such; visually edited components that can hook together intelligently and automatically remove overlap on export.
• UFO. No, not flying saucers. The Unified Font Object format is a nice XML-based schema that already has support in most existing editors and feels like a good platform to build on. (Besides, RoboFab can already read and write it.)
• Great OpenType feature support. One of my beefs with FontForge is that I have to use its UI for OpenType features. I’d much rather use Adobe’s text-based feature file format. Yes, FontForge can import/export it, but it’s not FF’s native way to edit OpenType, and I wish it were. (I, uh, like text.)
• DSL for editing glyph points. Visually drawing glyphs is nice, but I want to have a text editor pane beneath my glyph with code for that glyph that I can edit. (Text can be nicer for precision editing.) This would probably be a small domain-specific language. I’ve also thought about integrating it more completely — a fully-fleshed out parametric type design language, kind of like Metapost. The trick would be finding the sweet spot between writing parametric code and designing visually. I have some ideas for this that I’m excited to explore.

There’s more (I’m very interested in finding ways to improve the UI for drawing Bézier curves), but that’s quite enough for now.