import { ViewportType } from '../../../enums/index.js';
import type { DataAddOptions, LoadedData, RenderPathAttachment, RenderPathDefinition, RenderPath } from '../ViewportArchitectureTypes.js';
import type { ECGCanvasRenderContext, ECGDataPresentation } from './ECGViewportTypes.js';
export declare class CanvasECGRenderPath implements RenderPath<ECGCanvasRenderContext> {
    addData(ctx: ECGCanvasRenderContext, data: LoadedData, options: DataAddOptions): Promise<RenderPathAttachment<ECGDataPresentation>>;
    private updateDataPresentation;
    private applyViewState;
    private getFrameOfReferenceUID;
    private render;
    private removeData;
}
export declare class CanvasECGPath implements RenderPathDefinition<ECGCanvasRenderContext> {
    readonly id = "ecg:canvas-signal";
    readonly type = ViewportType.ECG_NEXT;
    matches(data: LoadedData, options: DataAddOptions): boolean;
    createRenderPath(): CanvasECGRenderPath;
}