ol/source/Stamen.js

OpenLayers mapping library

/**
 * @module ol/source/Stamen
 */
var __extends = (this && this.__extends) || (function () {
    var extendStatics = function (d, b) {
        extendStatics = Object.setPrototypeOf ||
            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
        return extendStatics(d, b);
    };
    return function (d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
import { ATTRIBUTION as OSM_ATTRIBUTION } from './OSM.js';
import XYZ from './XYZ.js';
/**
 * @const
 * @type {Array<string>}
 */
var ATTRIBUTIONS = [
    'Map tiles by <a href="https://stamen.com/" target="_blank">Stamen Design</a>, ' +
        'under <a href="https://creativecommons.org/licenses/by/3.0/" target="_blank">CC BY' +
        ' 3.0</a>.',
    OSM_ATTRIBUTION
];
/**
 * @type {Object<string, {extension: string, opaque: boolean}>}
 */
var LayerConfig = {
    'terrain': {
        extension: 'jpg',
        opaque: true
    },
    'terrain-background': {
        extension: 'jpg',
        opaque: true
    },
    'terrain-labels': {
        extension: 'png',
        opaque: false
    },
    'terrain-lines': {
        extension: 'png',
        opaque: false
    },
    'toner-background': {
        extension: 'png',
        opaque: true
    },
    'toner': {
        extension: 'png',
        opaque: true
    },
    'toner-hybrid': {
        extension: 'png',
        opaque: false
    },
    'toner-labels': {
        extension: 'png',
        opaque: false
    },
    'toner-lines': {
        extension: 'png',
        opaque: false
    },
    'toner-lite': {
        extension: 'png',
        opaque: true
    },
    'watercolor': {
        extension: 'jpg',
        opaque: true
    }
};
/**
 * @type {Object<string, {minZoom: number, maxZoom: number}>}
 */
var ProviderConfig = {
    'terrain': {
        minZoom: 0,
        maxZoom: 18
    },
    'toner': {
        minZoom: 0,
        maxZoom: 20
    },
    'watercolor': {
        minZoom: 0,
        maxZoom: 18
    }
};
/**
 * @typedef {Object} Options
 * @property {number} [cacheSize] Tile cache size. The default depends on the screen size. Will be ignored if too small.
 * @property {string} layer Layer name.
 * @property {number} [minZoom] Minimum zoom.
 * @property {number} [maxZoom] Maximum zoom.
 * @property {number} [reprojectionErrorThreshold=0.5] Maximum allowed reprojection error (in pixels).
 * Higher values can increase reprojection performance, but decrease precision.
 * @property {import("../Tile.js").LoadFunction} [tileLoadFunction]
 * Optional function to load a tile given a URL. The default is
 * ```js
 * function(imageTile, src) {
 *   imageTile.getImage().src = src;
 * };
 * ```
 * @property {number} [transition] Duration of the opacity transition for rendering.
 * To disable the opacity transition, pass `transition: 0`.
 * @property {string} [url] URL template. Must include `{x}`, `{y}` or `{-y}`, and `{z}` placeholders.
 * @property {boolean} [wrapX=true] Whether to wrap the world horizontally.
 */
/**
 * @classdesc
 * Layer source for the Stamen tile server.
 * @api
 */
var Stamen = /** @class */ (function (_super) {
    __extends(Stamen, _super);
    /**
     * @param {Options} options Stamen options.
     */
    function Stamen(options) {
        var _this = this;
        var i = options.layer.indexOf('-');
        var provider = i == -1 ? options.layer : options.layer.slice(0, i);
        var providerConfig = ProviderConfig[provider];
        var layerConfig = LayerConfig[options.layer];
        var url = options.url !== undefined ? options.url :
            'https://stamen-tiles-{a-d}.a.ssl.fastly.net/' + options.layer +
                '/{z}/{x}/{y}.' + layerConfig.extension;
        _this = _super.call(this, {
            attributions: ATTRIBUTIONS,
            cacheSize: options.cacheSize,
            crossOrigin: 'anonymous',
            maxZoom: options.maxZoom != undefined ? options.maxZoom : providerConfig.maxZoom,
            minZoom: options.minZoom != undefined ? options.minZoom : providerConfig.minZoom,
            opaque: layerConfig.opaque,
            reprojectionErrorThreshold: options.reprojectionErrorThreshold,
            tileLoadFunction: options.tileLoadFunction,
            transition: options.transition,
            url: url,
            wrapX: options.wrapX
        }) || this;
        return _this;
    }
    return Stamen;
}(XYZ));
export default Stamen;
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