⚡ Bolt: Optimize GradientBlinds pointer handling #32

2026-01-29T01:40:40Z

ragusa-it commented

2026-01-29 01:40:40 +00:00

(Migrated from github.com)

💡 What: Decoupled mouse position calculation in GradientBlinds.tsx from the pointermove event handler.
🎯 Why: Accessing window.scrollX and getBoundingClientRect (even cached) in a high-frequency pointermove handler can cause performance issues and layout thrashing. It also didn't account for scroll updates correctly when the mouse wasn't moving.
📊 Impact: Reduces main thread work during mouse movement. Ensures the spotlight effect stays synchronized with the page scroll even if the mouse is stationary.
🔬 Measurement: Verified with a new test case avoids expensive DOM reads (scrollX/Y) in pointermove handler when visible.

PR created automatically by Jules for task 9776062727377295977 started by @ragusa-it

💡 What: Decoupled mouse position calculation in `GradientBlinds.tsx` from the `pointermove` event handler. 🎯 Why: Accessing `window.scrollX` and `getBoundingClientRect` (even cached) in a high-frequency `pointermove` handler can cause performance issues and layout thrashing. It also didn't account for scroll updates correctly when the mouse wasn't moving. 📊 Impact: Reduces main thread work during mouse movement. Ensures the spotlight effect stays synchronized with the page scroll even if the mouse is stationary. 🔬 Measurement: Verified with a new test case `avoids expensive DOM reads (scrollX/Y) in pointermove handler when visible`. --- *PR created automatically by Jules for task [9776062727377295977](https://jules.google.com/task/9776062727377295977) started by @ragusa-it*

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google-labs-jules[bot] commented

2026-01-29 01:40:41 +00:00

(Migrated from github.com)

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👋 Jules, reporting for duty! I'm here to lend a hand with this pull request. When you start a review, I'll add a 👀 emoji to each comment to let you know I've read it. I'll focus on feedback directed at me and will do my best to stay out of conversations between you and other bots or reviewers to keep the noise down. I'll push a commit with your requested changes shortly after. Please note there might be a delay between these steps, but rest assured I'm on the job! For more direct control, you can switch me to **Reactive Mode**. When this mode is on, I will only act on comments where you specifically mention me with `@jules`. You can find this option in the **Pull Request** section of your [global Jules UI settings](https://jules.google.com/settings). You can always switch back! New to Jules? Learn more at [jules.google/docs](https://jules.google/docs). --- *_For security, I will only act on instructions from the user who triggered this task._*

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Reference: ragusa-it/ragusaitweb#32