Feature request: map mouse actions to mouse actions in macOS

[nivzelber]

Is your feature request related to a problem? Please describe.

I want to be able to map ctrl+click to command+click on mac (to function like windows).

However this is not a valid config:

(defcfg
  process-unmapped-keys yes
)

(defsrc
    mlft
)

(deflayermap (base)
    C-mlft M-mlft
)

Describe the solution you'd like.

Mapping of mouse buttons just like keyboard buttons

Describe alternatives you've considered.

Creating a new layer based on pressing ctrl that maps mlft to M-mlft, but this does not work from the same reason

Additional context

No response

[RodsonMatos]

Try this

(defcfg
  process-unmapped-keys yes
)

(defsrc
    mlft
)

(deflayer
    C-mlft M-mlft
)

[jtroo]

This is only supported for Linux and Windows-Interception today.

[mayurankv]

Do you have any advice on where to start if I wanted to try tackling this? (Reasonable dev experience but not with rust or karabiner specifically).

[jtroo]

Would need to add handling in the area of input handling.

kanata/src/kanata/macos.rs

Lines 26 to 28 in 75b2327

	let event = kb.read().map_err(|e| anyhow!("failed read: {}", e))?;
	let mut key_event = match KeyEvent::try_from(event) {

kanata/src/oskbd/macos.rs

Lines 158 to 161 in 75b2327

	impl TryFrom<KeyEvent> for InputEvent {
	type Error = ();
	fn try_from(item: KeyEvent) -> Result<Self, Self::Error> {

kanata/src/oskbd/macos.rs

Lines 86 to 96 in 75b2327

	pub fn read(&mut self) -> Result<InputEvent, io::Error> {
	let mut event = DKEvent {
	value: 0,
	page: 0,
	code: 0,
	};
	wait_key(&mut event);
	Ok(InputEvent::new(event))
	}

The karabiner provider dependency will likely need modification also.
https://github.com/psych3r/driverkit/blob/90df32d69f03914591a932cc6465bdb9e0924ebc/c_src/driverkit.cpp#L346