501ce1ba3dcdacbf95c0f7620d9407d7a19b4787
The status bar, the resolution readout and the magnifier were all regenerated on every single mouse motion event. Each regeneration repaints, and on a remote X session a repaint uploads the whole window regardless of how little changed, so the pointer merely crossing the image saturates the link: measured with a counting relay in front of the X server, 50 motions over the image cost 273 MB, and a build with the hover work removed cost 18 KB. Rate-limit it. Two details matter: - The limit is applied inline, not from a timer. Running the update inside the mouse event keeps its damage in the same repaint as anything else that event triggers (a pan). A first attempt deferred the work to a timer instead, which split one repaint into two and made panning measurably worse. - The catch-up that reports the final position is debounced, not queued per skipped motion, so it fires once after the pointer stops rather than repeatedly mid-gesture. mouseHover() now takes the scene position and modifiers instead of the event, which also removes the identical mapToScene() from all four implementations. Hover traffic over 3 repeats: 173 MB mean -> 140 MB, and the run-to-run spread drops from +-14% to +-2%. The harness tops out near 30 motions/s, barely above the 15 Hz limit; a real mouse reports far faster, where the cap does more. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Jungfraujoch
Application to receive data from the PSI JUNGFRAU and EIGER detectors.
All documentation is now placed in docs/ subdirectory and for the current version hosted on Jungfraujoch Read The Docs page.
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