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example.js
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example.js
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// @ts-ignore
const html = require("yo-yo");
const mapboxgl = require("mapbox-gl");
const startMapService = require("./");
startMapService("./sw.js");
const root = html`<div />`;
document.body.appendChild(root);
const values = {
accessToken:
"pk.eyJ1IjoiZGlnaWRlbSIsImEiOiJuM3FabmNFIn0._gF6262MSzePWUChu4S9PA",
longitude: 0,
latitude: 0,
zoom: 0,
style: "mapbox://styles/mapbox/outdoors-v11",
width: 300,
height: 300,
pixelRatio: window.devicePixelRatio,
};
/** @param {{id: keyof typeof values, type?: string}} options */
const input = ({ id, type = "text" }) => {
/** @param {{target: HTMLInputElement}} event */
function handleInput({ target }) {
if (!target || target.value === "") return;
// @ts-ignore
values[id] = type === "number" ? target.valueAsNumber : target.value;
updateMap();
}
return html`<div class="mb-2">
<label class="block text-gray-700 text-sm mb-1" for="${id}">
${id}
</label>
<input
class="shadow appearance-none border rounded w-full text-sm py-2 px-2 text-gray-700 leading-tight focus:outline-none focus:shadow-outline"
id="${id}"
type="${type}"
value="${getValue(id)}"
oninput=${handleInput}
/>
</div>`;
};
function updateMap() {
console.log("update map", values);
map.jumpTo({
center: [values.longitude, values.latitude],
zoom: values.zoom,
});
try {
new URL(values.style);
map.setStyle(values.style);
} catch (e) {}
}
/**
* @param {keyof typeof values} id
* @returns {number | string}
*/
function getValue(id) {
return values[id];
}
function generateImageUrl() {
const {
longitude,
latitude,
zoom,
accessToken,
width,
height,
style,
pixelRatio,
} = values;
return `/static-maps/${longitude},${latitude},${zoom}/${width}x${height}@${pixelRatio}x?accessToken=${accessToken}&style=${style}`;
}
const form = () => html`
<div class="w-full max-w-xs">
<form class="bg-white shadow-md rounded px-8 pt-6 pb-8">
<h3 class="block text-gray-700 text-sm font-bold mb-2">Parameters</h3>
${input({ id: "accessToken" })} ${input({ id: "style" })}
<div class="grid grid-cols-2 gap-4">
${input({ id: "longitude", type: "number" })}
${input({ id: "latitude", type: "number" })}
</div>
${input({ id: "zoom", type: "number" })}
<div class="grid grid-cols-2 gap-4">
${input({ id: "width", type: "number" })}
${input({ id: "height", type: "number" })}
</div>
${input({ id: "pixelRatio", type: "number" })}
<div class="flex items-center justify-between mt-6">
<button
class="bg-blue-500 hover:bg-blue-700 text-white font-bold py-2 px-4 rounded focus:outline-none focus:shadow-outline"
type="button"
onclick=${() => {
html.update(imageEl, mapImage(""));
html.update(imageEl, mapImage(generateImageUrl()));
}}
>
Generate Image
</button>
</div>
</form>
<p class="text-center text-gray-500 text-xs"></p>
</div>
`;
/** @param {string} src */
const mapImage = (src) => html`<img src=${src} />`;
const mapEl = html`<div class="absolute w-full h-full" />`;
const formEl = form();
const imageEl = mapImage(generateImageUrl());
html.update(
root,
html`
<div>
<div class="flex">
${formEl}
<div class="w-full relative" />${mapEl}</div>
</div>
${imageEl}
</div>
`
);
const map = new mapboxgl.Map({
accessToken: values.accessToken,
center: [values.longitude, values.latitude],
zoom: values.zoom,
style: values.style,
container: mapEl,
});
map.on("moveend", (e) => {
const center = map.getCenter();
const zoom = map.getZoom();
values.longitude = Math.round(center.lng * 10000) / 10000;
values.latitude = Math.round(center.lat * 10000) / 10000;
values.zoom = Math.round(zoom * 100) / 100;
html.update(formEl, form());
});