ClickControl

macOS での Force Click を、標準の辞書 Look Up から変更する常駐アプリです。現在は、ブラウザで「新規タブで開く」アクションを行う実装です。

ClickControl is a macOS menu bar app that changes Force Click behavior depending on the app.

The current version replaces Force Click with a synthetic Cmd+Shift click (open in new tab) when a target browser is frontmost.

Behavior

Target browser becomes frontmost
  -> temporarily disable macOS Force Click

Force Click pressure reaches stage 2
  -> press Cmd+Shift

Force Click pressure drops back from stage 2
  -> send Cmd+Shift+leftMouseUp
  -> release Cmd+Shift

Target browser loses focus or app exits
  -> release modifiers if needed
  -> restore the original Force Click setting

The app does not use the system leftMouseUp event as the Force Click release trigger. That event happens when the finger is lifted, which is later than the desired "pressure weakened" moment.

Target Browsers

Target browser detection is based on bundle identifiers in FrontmostAppGate.

Current targets include:

Google Chrome
Safari
Arc
Microsoft Edge
Brave
Firefox

Implementation Notes

Main components:

AppDelegate
  App lifecycle and component wiring.

FrontmostAppGate
  Detects whether the frontmost app is a target browser.

TrackpadSettingsController
  Temporarily disables and restores macOS Force Click preference.

ForceClickPressureMonitor
  Watches pressure events from a CGEvent tap and detects Force Click stage transitions.

SyntheticClickSender
  Sends synthetic Cmd+Shift key and mouse events.

Force Click detection uses this rule:

Subscribe to CGEvent raw type 29
  -> convert CGEvent to NSEvent
  -> process only NSEvent.EventType.pressure
  -> treat stage == 2 as Force Click active

See logic.md for the event analysis and raw value notes.

Build

Open the project in Xcode:

ClickControl.xcodeproj

Or build from the command line:

xcodebuild -project ClickControl.xcodeproj -scheme ClickControl -configuration Debug -derivedDataPath .derivedData CODE_SIGNING_ALLOWED=NO build

Permissions

The app uses a global event tap and synthetic input events. macOS may require Accessibility/Input Monitoring permissions for the built app, depending on how it is launched and signed.

Caveats

This app changes the user's Force Click preference while a target browser is frontmost and restores it afterward. If the app is force-killed, restoration may not run.

The current Force Click detection depends on the observed macOS event path where pressure events arrive through the event tap as CGEvent raw type 29 and become NSEvent.EventType.pressure after conversion.