Creating movable Fonts on a Canvas

[Amir Teymuri]

If i want to use fonts on a canvas in a way that each single Glyph/Font is movable around the canvas by mouse, is it a good idea to have a class drivative of canvas% for each new font and then override the on-event method of them to update its coordinates on the main canvas? Or is there a better more effiicient way for doing this?

Greetings,

Amir

[Alex Harsanyi]

Have a look at the `snip%` and `pasteboard%` classes: you can represent each glyph using a `snip%` and the pasteboard will handle the moving it with the mouse.  You can derive the `snip%` and `pasteboard%` objects to add new functionality -- this is easier than implementing a mouse move operation using the `canvas%`  `on-event` method.

While not exactly what you need, I wrote a blog post about using `snip%` objects, and in the first example, the chess pieces themselves are actually Unicode Glyphs, so you could easily modify it to have different Glyphs/Letters that can be moved around in a canvas:

https://alex-hhh.github.io/2018/10/chess-game-using-racket-s-pasteboard.html

Alex.

[Amir Teymuri]

Wow, this is a great blog! Many Thanks!