up

2026-06-09 23:00:09 +02:00
parent 6542504a4b
commit 42b5c6247d
8 changed files with 217 additions and 88 deletions
@@ -299,6 +299,20 @@ export function BandMap({ band, spots, spotStatus, currentFreqHz, onSpotClick, o
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, [band, containerH, currentFreqHz, range, lo, hi]);

+  // Re-centre on the rig frequency whenever the zoom level changes — zooming
+  // would otherwise drift away from where you're operating. Skips the initial
+  // mount (the band-centre effect above handles that).
+  const firstZoomRef = useRef(true);
+  useEffect(() => {
+    if (firstZoomRef.current) { firstZoomRef.current = false; return; }
+    const el = scrollerRef.current;
+    if (!el || !range || containerH <= 0) return;
+    const kHz = currentFreqHz && currentFreqHz / 1000 >= lo && currentFreqHz / 1000 <= hi
+      ? currentFreqHz / 1000 : (lo + hi) / 2;
+    el.scrollTop = Math.max(0, freqToY(kHz) - containerH / 2);
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [zoomIdx]);
+
  useEffect(() => {
    const el = scrollerRef.current;
    if (!el) return;