import { Lt as PerformanceMetrics } from "../DataCaptureContext-CAmigtb7.js";
import { PrivateCanvasDrawer } from "./CanvasDrawer.js";
//#region src/main/private/CanvasDrawerWithMetrics.d.ts
declare class PrivateCanvasDrawerWithMetrics extends PrivateCanvasDrawer {
  private drawPerformanceFPSCounter;
  private lastDrawPerformanceFPSCounter;
  private lastFPSUpdateTime;
  private smoothedFPS;
  private totalFPSSamples;
  private performanceMetrics?;
  private performanceCanvasLayer;
  private _performanceLayerContext;
  private static readonly SMOOTHING_FACTOR;
  constructor(canvas: HTMLCanvasElement);
  get performanceLayerContext(): CanvasRenderingContext2D;
  setupPerformanceLayer(): void;
  setPerformanceMetrics(performanceMetrics: PerformanceMetrics): void;
  updateCanvasSizeAttributes(width: number, height: number, devicePixelRatio?: number): ReturnType<PrivateCanvasDrawer["updateCanvasSizeAttributes"]>;
  protected doDraw(timestamp: DOMHighResTimeStamp): void;
  private updateFPSMetrics;
  /**
   * Applies exponential smoothing to FPS measurements to reduce jitter.
   * Uses 90% weight on previous smoothed value and 10% weight on new sample.
   */
  private applyExponentialSmoothing;
  protected drawFullPerformanceMetrics(): void;
}
//#endregion
export { PrivateCanvasDrawerWithMetrics };