Function updateLaneKnobVisual

static/js/mixer.js:82–98

(knobEl, v)

}

export function updateLaneKnobVisual(knobEl, v) {
  const frac = Math.max(0, Math.min(1, v / LANE_VOLUME_MAX));
  knobEl.style.setProperty("--lane-pos", frac.toFixed(3));
  knobEl.setAttribute("aria-valuenow", v.toFixed(2));
  const input = knobEl.querySelector(".mx-fader-input");
  if (input) {
    input.value = String(v);
    // Set --lane-pos directly on the input so ::webkit-slider-runnable-track
    // can see it — WebKit shadow DOM pseudo-elements don't inherit vars from ancestors.
    input.style.setProperty("--lane-pos", frac.toFixed(3));
  }
  const val = knobEl.closest(".lane-header")?.querySelector(".mx-val");
  if (val) {
    const db = v <= 0 ? "-∞" : (20 * Math.log10(v)).toFixed(1);
    val.textContent = db === "-∞" ? "-∞" : `${parseFloat(db) > 0 ? "+" : ""}${db}`;
  }
}

export function setLaneVolume(name, v) {
  const state = mixerState[name];