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CARTO VL - Basemap Switcher
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <title>CARTO VL: Switch the basemap</title> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=5.0"> | |
| <meta http-equiv="X-UA-Compatible" content="ie=edge"> | |
| <link rel="shortcut icon" href="https://carto.com/favicon.ico"> | |
| <link rel="stylesheet" href="https://libs.cartocdn.com/airship-style/v1.0.3/airship.css"> | |
| <script src="https://libs.cartocdn.com/airship-components/v1.0.3/airship.js"></script> | |
| <script src="https://libs.cartocdn.com/carto-vl/v1.0.0/carto-vl.min.js"></script> | |
| <script src="https://api.tiles.mapbox.com/mapbox-gl-js/v0.50.0/mapbox-gl.js"></script> | |
| <link href="https://api.tiles.mapbox.com/mapbox-gl-js/v0.50.0/mapbox-gl.css" rel="stylesheet" /> | |
| <script src="https://cdn.jsdelivr.net/npm/vue"></script> | |
| <style> | |
| .basemaps ul{ | |
| padding-inline-start: 5px; | |
| margin: 5px; | |
| } | |
| </style> | |
| </head> | |
| <body class="as-app-body as-app"> | |
| <as-responsive-content> | |
| <main class="as-main"> | |
| <div class="as-map-area"> | |
| <div id="map" style="width:100%;height:100vh;"></div> | |
| </div> | |
| </main> | |
| <div class="as-map-panels"> | |
| <div class="as-panel as-panel--top as-panel--right" id="app"> | |
| <div class="as-panel__element as-p--4 basemaps"> | |
| <ul v-for="basemap in basemaps"> | |
| <li class="as-radio"> | |
| <input class="as-radio__input" type="radio" id="{{basemap.id}}" name="basemapSelect" | |
| v-bind:value="basemap.id" v-model="basemapSelected" :checked="basemap.id == basemapSelected"> | |
| <label class="as-caption" for="{{basemap}}">{{basemap.name }}</label> | |
| </li> | |
| </ul> | |
| </div> | |
| </div> | |
| </div> | |
| </as-responsive-content> | |
| <script> | |
| function simpleTilesStyle(urls){ | |
| return { | |
| version: 8, | |
| sources: { | |
| "simple-tiles": { | |
| type: "raster", | |
| tiles: urls, | |
| tileSize: 256 | |
| } | |
| }, | |
| layers: [{ | |
| id: "simple-tiles", | |
| type: "raster", | |
| source: "simple-tiles", | |
| minzoom: 0, | |
| maxzoom: 22 | |
| }] | |
| } | |
| } | |
| function run() { | |
| const basemapsData = [{ | |
| id: 'voyager', | |
| name: 'Color (CARTO)', | |
| style: carto.basemaps.voyager, | |
| databelow: 'watername_ocean', | |
| }, { | |
| id: 'positron', | |
| name: 'Light (CARTO)', | |
| style: carto.basemaps.positron, | |
| databelow: 'watername_ocean', | |
| }, { | |
| id: 'darkmatter', | |
| name: 'Dark (CARTO)', | |
| style: carto.basemaps.darkmatter, | |
| databelow: 'watername_ocean', | |
| }, { | |
| id: 'here', | |
| name: 'HERE', | |
| style: simpleTilesStyle( ['1', '2', '3', '4'].map(s => { return `https://${s}.base.maps.api.here.com/maptile/2.1/maptile/newest/reduced.day/{z}/{x}/{y}/256/png8?app_id=W5LaaXz5OWFgAHEQnIoZ&app_code=bcrpWpQGiM2b72u9_ygFWA`; })) | |
| }]; | |
| // Vue app to control state and rendering | |
| new Vue({ | |
| el: '#app', | |
| data: { | |
| basemaps: basemapsData, | |
| basemapSelected: basemapsData[0].id, | |
| map: null | |
| }, | |
| computed: { | |
| basemapSelectedObj: function () { | |
| return this.basemaps.filter(b => b.id == this.basemapSelected)[0]; | |
| } | |
| }, | |
| watch: { | |
| basemapSelected: function () { | |
| const basemap = this.basemapSelectedObj; | |
| this.map.removeLayer('layer'); | |
| this.map.setStyle(basemap.style, basemap.databelow); | |
| } | |
| }, | |
| methods: { | |
| initialize: function () { | |
| this.map = new mapboxgl.Map({ | |
| container: 'map', | |
| style: carto.basemaps.voyager, | |
| center: [39.29, 3.54], | |
| zoom: 4, | |
| scrollZoom: true, | |
| hash: true | |
| }); | |
| const nav = new mapboxgl.NavigationControl({ | |
| showCompass: false | |
| }); | |
| this.map.addControl(nav, 'top-left'); | |
| // Define user | |
| carto.setDefaultAuth({ | |
| username: 'cartovl', | |
| apiKey: 'default_public' | |
| }); | |
| this.map.on('sourcedata', this.drawLayer); | |
| }, | |
| drawLayer: function () { | |
| function sleep(ms) { return new Promise(resolve => setTimeout(resolve, ms)); } | |
| async function wait(ctx, howMuch) { | |
| await sleep(howMuch); | |
| if (!ctx.map.getLayer('layer')) { | |
| const source = new carto.source.Dataset('populated_places'); | |
| const viz = new carto.Viz(); | |
| const layer = new carto.Layer('layer', source, viz); | |
| if (ctx.basemapSelectedObj && ctx.basemapSelectedObj.hasOwnProperty( | |
| 'databelow')) { | |
| layer.addTo(ctx.map, ctx.basemapSelectedObj.databelow); | |
| } else { | |
| layer.addTo(ctx.map); | |
| } | |
| console.log('Layer redrawn'); | |
| } | |
| } | |
| wait(this, 100); | |
| } | |
| } | |
| }).initialize(); | |
| } | |
| // Run the script when content is ready | |
| document.querySelector('as-responsive-content').addEventListener('ready', run); | |
| </script> | |
| </body> | |
| </html> |
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