import { type DfDragDrop } from '../../directives/drag-drop';
import { type DfPoint } from '../../ng-draw-flow.interfaces';
import * as i0 from "@angular/core";
export type DfPanZoomRenderMode = 'async' | 'sync';
export interface DfPanZoomViewportPanGesture {
    readonly type: 'pan';
    readonly deltaX: number;
    readonly deltaY: number;
}
export interface DfPanZoomViewportZoomGesture {
    readonly type: 'zoom';
    readonly point: DfPoint;
    readonly deltaScale: number;
}
export type DfPanZoomViewportGesture = DfPanZoomViewportPanGesture | DfPanZoomViewportZoomGesture;
export declare class PanZoomControllerService {
    private readonly destroyRef;
    private readonly panZoomService;
    private readonly panZoomOptions;
    private readonly draggingSignal;
    private readonly transitionedSignal;
    private readonly viewportSizeSignal;
    private readonly viewportZeroPointSignal;
    private readonly layoutOffsetSignal;
    private readonly renderRequestsSubject;
    private readonly scaleChangesSubject;
    private readonly pendingGestures;
    private emittedZoom;
    private gestureFlushSubscription;
    readonly dragging: import("@angular/core").Signal<boolean>;
    readonly transitioned: import("@angular/core").Signal<boolean>;
    readonly viewportSize: import("@angular/core").Signal<{
        width: number;
        height: number;
    }>;
    readonly viewportZeroPoint: import("@angular/core").Signal<DfPoint>;
    readonly layoutOffset: import("@angular/core").Signal<DfPoint>;
    readonly renderRequests$: import("rxjs").Observable<DfPanZoomRenderMode>;
    readonly scaleChanges$: import("rxjs").Observable<number>;
    readonly cursor: import("@angular/core").Signal<"grabbing" | "initial">;
    readonly panTransform: import("@angular/core").Signal<string>;
    readonly transitionDuration: import("@angular/core").Signal<string>;
    constructor();
    resetPanzoom(): void;
    setPosition(position?: Partial<DfPoint> & {
        zoom?: number;
    }): void;
    setScale(scale: number): void;
    zoomIn(): void;
    zoomOut(): void;
    handlePan({ distance, stage }: DfDragDrop): void;
    syncContainerOffsets(rootSize: {
        width: number;
        height: number;
    }): void;
    queueGesture(gesture: DfPanZoomViewportGesture): void;
    flushGestures(): void;
    private scheduleGestureFlush;
    private setZoom;
    private emitScale;
    private requestRender;
    private renderNow;
    private clampCamera;
    static ɵfac: i0.ɵɵFactoryDeclaration<PanZoomControllerService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<PanZoomControllerService>;
}