import { Observable } from 'rxjs';
import { ViewBounds } from '@bespunky/angular-cdk/navigables/camera';
import { TimelineTick, DatesBetweenGenerator, TickData, TickLabeler, WidthCalculator } from '@bespunky/angular-cdk/timeline/abstraction/ticks';
import * as i0 from "@angular/core";
/**
 * Provides methods for virtualizing tick rendering. This service is designed to determine what ticks should
 * be displayed on the screen according to screen size, zoom, view center and other factors.
 *
 * @export
 * @class TimelineTickVirtualizationService
 */
export declare class TimelineTickVirtualizationService {
    /**
     * Creates a stream that notifies subscribers when the specified tick scale should render or unrender.
     * Render state is determined by the current zoom level and the min/max zoom defined for the tick scale.
     *
     * @param {TimelineTick} tick The tick scale for which to create the stream.
     * @returns {Observable<boolean>} An observable that notifies subscribers when to render and unrender the tick.
     */
    shouldRenderFeed(tick: TimelineTick): Observable<boolean>;
    widthFeed(tick: TimelineTick): Observable<WidthCalculator>;
    /**
     * Creates a stream that notifies subscribers when the ticks that should be displayed on the screen have changed.
     * A new item array will be generated any time one of the following occurs:
     * - The tick label function has been replaced
     * - The tick dateBetween function has been replaced
     * - The tick dayFactor has been updated
     * - The timeline zoom level has changed
     * - The timeline view center has changed
     * - The timeline virtualization buffer size has changed
     *
     * @param {TimelineTick} tick The tick scale for which to create the stream.
     * @returns {Observable<TickData[]>} A stream that notifies subscribers when the ticks that should
     * be displayed on the screen have changed.
     */
    itemsToRenderFeed(tick: TimelineTick): Observable<TickData[]>;
    /**
     * Generates an array of tick items representing the ticks that should be displayed on the screen given
     * the specified state.
     *
     * @param {ViewBounds} viewBounds The current bounds of the view on the timeline's camera.
     * @param {number} dayWidth The width (in pixels) representing one single day on the timeline.
     * @param {WidthCalculator} width A function that calculates the width of a single tick.
     * @param {number} startPosition The start position (in pixels) from which ticks should start. This should include any buffer width.
     * @param {number} endPosition The end position (in pixels) from which ticks should end. This should include any buffer width.
     * @param {DatesBetweenGenerator} datesBetween The function that generates all tick scale-level dates between two given dates.
     * @param {TickLabeler} label The function to use for labeling the items.
     * @returns {TickData[]} An array of tick items representing the ticks that should be displayed on the screen.
     */
    ticksOnScreen(viewBounds: ViewBounds, sizeUnit: number, dayWidth: number, width: WidthCalculator, startPosition: number, endPosition: number, datesBetween: DatesBetweenGenerator, label: TickLabeler): TickData[];
    static ɵfac: i0.ɵɵFactoryDeclaration<TimelineTickVirtualizationService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<TimelineTickVirtualizationService>;
}