9f79d33486
From https://developers.google.com/closure/compiler/docs/js-for-compiler: "The type declaration and additional comment are optional. If you provide a type declaration, put the declaration on a separate line."
127 lines
2.6 KiB
JavaScript
127 lines
2.6 KiB
JavaScript
goog.provide('ol.source.Stamen');
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goog.require('goog.asserts');
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goog.require('ol.Attribution');
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goog.require('ol.source.OSM');
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goog.require('ol.source.XYZ');
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/**
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* @type {Object.<string, {extension: string, opaque: boolean}>}
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*/
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ol.source.StamenLayerConfig = {
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'terrain': {
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extension: 'jpg',
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opaque: true
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},
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'terrain-background': {
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extension: 'jpg',
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opaque: true
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},
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'terrain-labels': {
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extension: 'png',
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opaque: false
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},
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'terrain-lines': {
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extension: 'png',
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opaque: false
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},
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'toner-background': {
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extension: 'png',
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opaque: true
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},
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'toner': {
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extension: 'png',
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opaque: true
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},
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'toner-hybrid': {
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extension: 'png',
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opaque: false
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},
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'toner-labels': {
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extension: 'png',
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opaque: false
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},
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'toner-lines': {
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extension: 'png',
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opaque: false
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},
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'toner-lite': {
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extension: 'png',
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opaque: true
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},
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'watercolor': {
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extension: 'jpg',
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opaque: true
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}
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};
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/**
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* @type {Object.<string, {minZoom: number, maxZoom: number}>}
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*/
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ol.source.StamenProviderConfig = {
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'terrain': {
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minZoom: 4,
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maxZoom: 18
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},
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'toner': {
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minZoom: 0,
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maxZoom: 20
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},
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'watercolor': {
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minZoom: 3,
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maxZoom: 16
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}
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};
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/**
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* @constructor
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* @extends {ol.source.XYZ}
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* @param {olx.source.StamenOptions} options Stamen options.
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* @todo stability experimental
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*/
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ol.source.Stamen = function(options) {
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var i = options.layer.indexOf('-');
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var provider = i == -1 ? options.layer : options.layer.slice(0, i);
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goog.asserts.assert(provider in ol.source.StamenProviderConfig);
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var providerConfig = ol.source.StamenProviderConfig[provider];
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goog.asserts.assert(options.layer in ol.source.StamenLayerConfig);
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var layerConfig = ol.source.StamenLayerConfig[options.layer];
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var url = goog.isDef(options.url) ? options.url :
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'http://{a-d}.tile.stamen.com/' + options.layer + '/{z}/{x}/{y}.' +
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layerConfig.extension;
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goog.base(this, {
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attributions: ol.source.Stamen.ATTRIBUTIONS,
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crossOrigin: 'anonymous',
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maxZoom: providerConfig.maxZoom,
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// FIXME uncomment the following when tilegrid supports minZoom
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//minZoom: providerConfig.minZoom,
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opaque: layerConfig.opaque,
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tileLoadFunction: options.tileLoadFunction,
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url: url
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});
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};
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goog.inherits(ol.source.Stamen, ol.source.XYZ);
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/**
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* @const
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* @type {Array.<ol.Attribution>}
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*/
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ol.source.Stamen.ATTRIBUTIONS = [
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new ol.Attribution({
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html: 'Map tiles by <a href="http://stamen.com/">Stamen Design</a>, ' +
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'under <a href="http://creativecommons.org/licenses/by/3.0/">CC BY' +
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' 3.0</a>.'
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}),
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ol.source.OSM.DATA_ATTRIBUTION
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];
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