Function onPointerUp

src/ChartGPU.ts:1228–1257

(e: PointerEvent)

  };

  const onPointerUp = (e: PointerEvent): void => {
    if (disposed) return;
    if (!hasClickListeners()) return;
    if (!e.isPrimary) return;
    if (!tapCandidate || e.pointerId !== tapCandidate.pointerId) return;

    const dt = e.timeStamp - tapCandidate.startTimeMs;
    const dx = e.clientX - tapCandidate.startClientX;
    const dy = e.clientY - tapCandidate.startClientY;
    const distSq = dx * dx + dy * dy;

    tapCandidate = null;

    // Release capture if we have it; suppress the resulting lostpointercapture.
    try {
      if (canvas.hasPointerCapture(e.pointerId)) {
        suppressNextLostPointerCaptureId = e.pointerId;
        canvas.releasePointerCapture(e.pointerId);
      }
    } catch {
      // best-effort
    }

    const maxDist = DEFAULT_TAP_MAX_DISTANCE_CSS_PX;
    const isTap = dt <= DEFAULT_TAP_MAX_TIME_MS && distSq <= maxDist * maxDist;
    if (!isTap) return;

    const { match } = getNearestPointFromPointerEvent(e);
    emit('click', buildPayload(match, e));
  };

  canvas.addEventListener('pointermove', onPointerMove, { passive: true });
  canvas.addEventListener('pointerleave', onPointerLeave, { passive: true });