fxdave/hkd

W.I.P. Hot key daemon for X.Org

hkd's Issues

KeyTree state machine

Hotkeys are stored in a tree. The tree (currently) looks like this:

#[derive(Clone)]
pub enum KeyTree {

    // A and B after each other separately
    // On interpretation: A should be true
    // On interpretation again: B should be true
    Sequence(Box<KeyTree>, Box<KeyTree>),

    // A and B should be true at the same time
    All(Box<KeyTree>, Box<KeyTree>),


    // A or B should be true at a time (not exclusive)
    Any(Box<KeyTree>, Box<KeyTree>),

    // the key should be pressed by the user
    Single { key: xcb::Keysym, replay: bool },
}

The problem: The user presses keys and the app should match the keys with the current KeyTree (subject to change).

The idea is to create a state machine, that has the KeyTree and its current state. It should be owned by the Binding_(binding.rs) struct or the Binding_(binding.rs) struct could be the machine itself. The machine will get every xcb::Keysym (the key), and it should return None or Some(usize), where the usize will be the order number of the matched item in an Any subtree.

For e.g: super + {c, s}

if let Some(i) = state_machine.process_key() {
    match i {
        1 => run_chromium(),
        2 => run_slack(),
    }
}

Non-functional requirements:
The method to process keys should be fast.