FocusHighlight.spoon

A macOS utility that briefly highlights the active window when focused. Useful when switching apps on multiple displays, so you know which monitor ends up being focused.

It is implemented as a Spoon for Hammerspoon. You can customize the color of the highlight.

How to use

1. Install Hammerspoon

2. Install FocusHighlight.spoon using Git:

   git clone https://github.com/dtinth/FocusHighlight.spoon.git ~/.hammerspoon/Spoons/FocusHighlight.spoon

3. Update Hammerspoon configuration file:

   hs.loadSpoon("FocusHighlight")
   spoon.FocusHighlight:start()

Customization

Put these in your configuration file.

spoon.FocusHighlight.color = "#ffffff"
spoon.FocusHighlight.windowFilter = hs.window.filter.default
spoon.FocusHighlight.arrowSize = 256
spoon.FocusHighlight.arrowFadeOutDuration = 1
spoon.FocusHighlight.highlightFadeOutDuration = 1
spoon.FocusHighlight.highlightFillAlpha = 0.1