Function applyRangeToDom

src/components/createDataZoomSlider.ts:117–122

(range: ZoomRange)

  let activeDragCleanup: (() => void) | null = null;

  const applyRangeToDom = (range: ZoomRange): void => {
    const r = normalizeRange(range);
    const span = clamp(r.end - r.start, 0, 100);
    windowEl.style.left = `${r.start}%`;
    windowEl.style.width = `${span}%`;
  };

  const getTrackWidthPx = (): number | null => {
    // getBoundingClientRect() is robust even if the container is scaled.