import { ElementRef, EventEmitter, OnChanges, OnDestroy, SimpleChanges } from '@angular/core';
import { ReadGeomValue, ReadResource, ReadStillImageFileValue, RegionGeometry } from '@dasch-swiss/dsp-js';
/**
 * Represents a region resource.
 */
export declare class Region {
    readonly regionResource: ReadResource;
    /**
     *
     * @param regionResource a resource of type Region
     */
    constructor(regionResource: ReadResource);
    /**
     * Get all geometry information belonging to this region.
     *
     */
    getGeometries(): ReadGeomValue[];
}
/**
 * Represents a still image file value including its regions.
 */
export declare class StillImageRepresentation {
    readonly stillImageFileValue: ReadStillImageFileValue;
    readonly regions: Region[];
    /**
     *
     * @param stillImageFileValue a [[ReadStillImageFileValue]] representing an image.
     * @param regions the regions belonging to the image.
     */
    constructor(stillImageFileValue: ReadStillImageFileValue, regions: Region[]);
}
/**
 * Represents a geometry belonging to a specific region resource.
 */
export declare class GeometryForRegion {
    readonly geometry: RegionGeometry;
    readonly region: ReadResource;
    /**
     *
     * @param geometry the geometrical information.
     * @param region the region the geometry belongs to.
     */
    constructor(geometry: RegionGeometry, region: ReadResource);
}
export declare class StillImageComponent implements OnChanges, OnDestroy {
    private _elementRef;
    images: StillImageRepresentation[];
    imageCaption?: string;
    activateRegion?: string;
    regionClicked: EventEmitter<string>;
    private _viewer;
    private _regions;
    /**
     * Calculates the surface of a rectangular region.
     *
     * @param geom the region's geometry.
     * @returns the surface.
     */
    static surfaceOfRectangularRegion(geom: RegionGeometry): number;
    constructor(_elementRef: ElementRef);
    ngOnChanges(changes: SimpleChanges): void;
    ngOnDestroy(): void;
    /**
     * Renders all ReadStillImageFileValues to be found in [[this.images]].
     * (Although this.images is a Angular Input property, the built-in change detection of Angular does not detect changes in complex objects or arrays, only reassignment of objects/arrays.
     * Use this method if additional ReadStillImageFileValues were added to this.images after creation/assignment of the this.images array.)
     */
    updateImages(): void;
    /**
     * Renders all regions to be found in [[this.images]].
     * (Although this.images is a Angular Input property, the built-in change detection of Angular does not detect changes in complex objects or arrays, only reassignment of objects/arrays.
     * Use this method if additional regions were added to the resources.images)
     */
    updateRegions(): void;
    /**
     * Highlights the polygon elements associated with the given region.
     *
     * @param regionIri the Iri of the region whose polygon elements should be highlighted..
     */
    private _highlightRegion;
    /**
     * Unhighlights the polygon elements of all regions.
     *
     */
    private _unhighlightAllRegions;
    /**
     * Removes SVG overlays from the DOM.
     */
    private _removeOverlays;
    /**
     * Initializes the OpenSeadragon _viewer
     */
    private _setupViewer;
    /**
     * Adds all images in this.images to the _viewer.
     * Images are positioned in a horizontal row next to each other.
     */
    private _openImages;
    /**
     * Prepare tile sources from the given sequence of [[ReadStillImageFileValue]].
     *
     * @param imagesToDisplay the given file values to de displayed.
     * @returns the tile sources to be passed to OSD _viewer.
     */
    private _prepareTileSourcesFromFileValues;
    /**
     * Adds a ROI-overlay to the viewer for every region of every image in this.images
     */
    private _renderRegions;
    /**
     * Creates and adds a ROI-overlay to the viewer
     * @param regionIri the Iri of the region.
     * @param geometry - the geometry describing the ROI
     * @param aspectRatio -  the aspectRatio (h/w) of the image on which the geometry should be placed
     * @param xOffset -  the x-offset in Openseadragon viewport coordinates of the image on which the geometry should be placed
     * @param toolTip -  the tooltip which should be displayed on mousehover of the svg element
     */
    private _createSVGOverlay;
    /**
     * Adds the necessary attributes to create a ROI-overlay of type 'rectangle' to a SVGElement
     * @param svgElement - an SVGElement (should have type 'polygon' (sic))
     * @param geometry - the geometry describing the rectangle
     * @param aspectRatio - the aspectRatio (h/w) of the image on which the circle should be placed
     * @param xOffset - the x-offset in Openseadragon viewport coordinates of the image on which the circle should be placed
     */
    private _addSVGAttributesRectangle;
    /**
     * Adds the necessary attributes to create a ROI-overlay of type 'polygon' to a SVGElement
     * @param svgElement - an SVGElement (should have type 'polygon')
     * @param geometry - the geometry describing the polygon
     * @param aspectRatio - the aspectRatio (h/w) of the image on which the circle should be placed
     * @param xOffset - the x-offset in Openseadragon viewport coordinates of the image on which the circle should be placed
     */
    private _addSVGAttributesPolygon;
    /**
     * Adds the necessary attributes to create a ROI-overlay of type 'circle' to a SVGElement
     * @param svgElement - an SVGElement (should have type 'circle')
     * @param geometry - the geometry describing the circle
     * @param aspectRatio - the aspectRatio (h/w) of the image on which the circle should be placed
     * @param xOffset - the x-offset in Openseadragon viewport coordinates of the image on which the circle should be placed
     */
    private _addSVGAttributesCircle;
    /**
     * Maps a Point2D[] with coordinates relative to an image to a new Point2D[] with coordinates in the viewport coordinate system of Openseadragon
     * see also: https://openseadragon.github.io/examples/viewport-coordinates/
     * @param points - an array of points in coordinate system relative to an image
     * @param aspectRatio - the aspectRatio (h/w) of the image
     * @param xOffset - the x-offset in viewport coordinates of the image
     * @returns - a new Point2D[] with coordinates in the viewport coordinate system of Openseadragon
     */
    private _image2ViewPortCoords;
    /**
     * Returns a string in the format expected by the 'points' attribute of a SVGElement
     * @param points - an array of points to be serialized to a string
     * @returns - the points serialized to a string in the format expected by the 'points' attribute of a SVGElement
     */
    private _createSVGPolygonPointsAttribute;
}