Method disposeOverlays

src/worker/ChartGPUWorkerProxy.ts:1025–1056

* Disposes all DOM overlays and cleans up RAF batching.

()

   * Disposes all DOM overlays and cleans up RAF batching.
   */
  private disposeOverlays(): void {
    // Cancel any pending RAF for overlay updates
    if (this.overlayUpdateRafId !== null) {
      cancelAnimationFrame(this.overlayUpdateRafId);
      this.overlayUpdateRafId = null;
    }
    
    // Clear pending updates
    this.pendingOverlayUpdates = {};
    
    // Dispose all overlays
    this.tooltip?.dispose();
    this.tooltip = null;
    
    this.legend?.dispose();
    this.legend = null;
    
    this.textOverlay?.dispose();
    this.textOverlay = null;

    this.annotationTextOverlay?.dispose();
    this.annotationTextOverlay = null;
    
    this.dataZoomSlider?.dispose();
    this.dataZoomSlider = null;
    
    // Remove slider host from DOM
    this.dataZoomSliderHost?.remove();
    this.dataZoomSliderHost = null;
    
    this.zoomState = null;
  }
  
  /**
   * Schedules overlay updates in the next RAF to batch multiple updates.