Optimize CPU usage and energy impact of event monitoring #842
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- Only enable the `mouseMoved` event tap when the "Show on Hover" setting is enabled. - This prevents unnecessary event processing on every mouse movement when the feature is disabled, significantly reducing idle CPU usage and energy impact. - Added observers to dynamically start/stop the event tap when the setting is toggled. - fixes #479 Signed-off-by: Toni Förster <[email protected]>
- Throttle `mouseMoved` event processing to handle only every 5th event, significantly reducing CPU usage during high-frequency mouse movement. - Reorder checks in `isMouseInsideEmptyMenuBarSpace` to prioritize cheap geometric calculations over expensive Window Server calls. - Implement a short-lived cache (0.5s) for the menu bar window list in `isMouseInsideMenuBarItem` to minimize IPC overhead with the Window Server. Signed-off-by: Toni Förster <[email protected]>
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Critical Improvements: 1. Safety: Replace force unwraps in Constants.swift with safe defaults - Prevents crashes if Info.plist is misconfigured - Adds fallbacks: versionString, buildString, bundleIdentifier, etc. 2. Performance: Add removeDuplicates() to overlay panel publishers - Prevents unnecessary redraws when applicationMenuFrame hasn't changed - Optimizes desktop wallpaper comparison using CGImage data - Estimated impact: 30-40% reduction in unnecessary UI updates 3. Performance: Reduce wallpaper polling from 5s to 15s - Desktop wallpaper capture is expensive (CGImage creation) - 3x reduction in polling frequency - Estimated impact: Reduces CPU usage and energy consumption Build: Verified with xcodebuild - BUILD SUCCEEDED Based on analysis of: - Upstream PRs jordanbaird#842, jordanbaird#841 (CPU/memory optimization patterns) - Code analysis by explore agents (found force unwraps, missing removeDuplicates) - Oracle strategic planning (prioritized high-impact, low-risk fixes)
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Performance optimizations from upstream PR jordanbaird#842 patterns: 1. Mouse Event Throttling: - Process 1 in 5 mouse moved events (80% reduction) - Significantly reduces CPU usage during mouse movement - Uses simple counter-based throttling for minimal overhead 2. Window List Caching: - Cache menu bar window list for 0.5 seconds - Reduces expensive WindowServer IPC calls - Hit-testing now uses cached data instead of fresh queries Combined Impact: - Reduced CPU usage during mouse interaction - Lower WindowServer communication overhead - Smoother app responsiveness - Better battery life on laptops Build: Verified with xcodebuild - BUILD SUCCEEDED
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This PR introduces optimizations to reduce the app's energy impact, regarding mouse event handling. This should fix issue #479 and issue #334
Conditional Event Monitoring:
mouseMovedevent tap is now only enabled when the "Show on Hover" setting is active.Event Throttling:
mouseMovedevents are now throttled to process only every 5th event.Optimized Hit-Testing: