- piemenu for Tk ,by Don Hopkins
Description editCurrent version : Beta, 0.3, home , download , manual (draft) This is an ongoing project. Hopefully this or some other incarnation of pie menus will prove to be a good widget for Tk. Lack of anti-aliasing and transparency is a problem in creating good looking curved canvas buttons. Ideas and help are invited and welcome. dzach
This package provides a single command piemenu, in a similar manner with Tk's menu command. The piemenu command is used to create either a toplevel or a canvas menu. If the parent of the pathName provided at creation time is a canvas widget, then the pie menu is created in that canvas. Otherwise it is created in a new toplevel window.Here is an example of how a pie menu looks like:Why use a pie menu ?
- The main reason is because it's far easier to use on touch screens, on mobile devices where simplicity matters.
- It has different aesthetics than the usual rectangular popup or drop down menus, and can make tcl/tk look nice.
- Round shapes are usually easier to the eye (can be easily made cluttered though, like everything else).
- It can help give a minimalistic appearance to an interface, when this is a requirement (e.g. OLPC's Sugar interface ).
- It gives the benefits of applying Fitts's Law  to popup menus.
BUGSThe piemenu package code needs improvement, so bug reports and patches are welcome.
schlenk Did you consider to put this into tklib? Looks like a nice and useful package.dzach I think it needs further development. It's still in beta, and there are a number of subcommands that are similar to tk's menu command that are not yet implemented. There is also the possibility to make a round (or elliptical) popup piemenu that does not show a rectangular top level window. However, if putting it in tklib would help develop it further, by attracting some more developers who find it useful, I'd be glad to.