[feat](trx-frontend-http): tune SDR spectrum with ctrl-scroll

Signed-off-by: Stan Grams <sjg@haxx.space> Co-authored-by: OpenAI Codex <codex@openai.com>
2026-02-27 23:05:20 +01:00
parent bc206e8f6b
commit 071157e5bf
2 changed files with 7 additions and 9 deletions
@@ -2719,19 +2719,17 @@ if (spectrumCanvas) {
  spectrumCanvas.addEventListener("wheel", (e) => {
    e.preventDefault();
    if (!lastSpectrumData) return;
+    if (e.ctrlKey) {
+      const direction = e.deltaY < 0 ? 1 : -1;
+      jogFreq(direction);
+      return;
+    }
    const rect   = spectrumCanvas.getBoundingClientRect();
    const cssX   = e.clientX - rect.left;
    const factor = e.deltaY < 0 ? 1.25 : 1 / 1.25;
    spectrumZoomAt(cssX, rect.width, lastSpectrumData, factor);
    drawSpectrum(lastSpectrumData);
  }, { passive: false });
-
-  // Double-click → reset zoom/pan
-  spectrumCanvas.addEventListener("dblclick", () => {
-    spectrumZoom    = 1;
-    spectrumPanFrac = 0.5;
-    if (lastSpectrumData) drawSpectrum(lastSpectrumData);
-  });
 }

 // ── BW strip edge hit-test (CSS pixels) ──────────────────────────────────────