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Romein van Buren 2023-10-08 20:43:45 +02:00
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# Logs
logs
*.log
npm-debug.log*
yarn-debug.log*
yarn-error.log*
pnpm-debug.log*
lerna-debug.log*
node_modules
dist
dist-ssr
*.local
# Editor directories and files
.vscode/*
!.vscode/extensions.json
.idea
.DS_Store
*.suo
*.ntvs*
*.njsproj
*.sln
*.sw?

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Copyright (c) 2023 Romein van Buren <<romein@vburen.nl>>
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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# gpstool
A web-based tool for retrieving and converting GPS coordinates.
![Screenshot](./.github/screenshot.png)
## Local development
gpstool is developed using [Vite](https://vitejs.dev/) and [Svelte](https://svelte.dev/).
```bash
npm install
npm run dev
```
## License
Please see the [`LICENSE.md` file](./LICENSE.md) for the license.

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<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>gpstool</title>
<link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" integrity="sha256-p4NxAoJBhIIN+hmNHrzRCf9tD/miZyoHS5obTRR9BMY=" crossorigin="" />
<script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js" integrity="sha256-20nQCchB9co0qIjJZRGuk2/Z9VM+kNiyxNV1lvTlZBo=" crossorigin=""></script>
</head>
<body>
<div id="app">
<noscript>
Please enable JavaScript in your browser to use gpstool.
</noscript>
</div>
<script type="module" src="/src/app.js"></script>
</body>
</html>

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{
"compilerOptions": {
"moduleResolution": "bundler",
"target": "ESNext",
"module": "ESNext",
/**
* svelte-preprocess cannot figure out whether you have
* a value or a type, so tell TypeScript to enforce using
* `import type` instead of `import` for Types.
*/
"verbatimModuleSyntax": true,
"isolatedModules": true,
"resolveJsonModule": true,
/**
* To have warnings / errors of the Svelte compiler at the
* correct position, enable source maps by default.
*/
"sourceMap": true,
"esModuleInterop": true,
"skipLibCheck": true,
/**
* Typecheck JS in `.svelte` and `.js` files by default.
* Disable this if you'd like to use dynamic types.
*/
"checkJs": true
},
/**
* Use global.d.ts instead of compilerOptions.types
* to avoid limiting type declarations.
*/
"include": ["src/**/*.d.ts", "src/**/*.js", "src/**/*.svelte"]
}

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{
"name": "gpstool",
"private": true,
"version": "0.0.0",
"type": "module",
"scripts": {
"dev": "vite",
"build": "vite build",
"preview": "vite preview"
},
"devDependencies": {
"@garraflavatra/yeslint": "^1.0.0",
"@sveltejs/vite-plugin-svelte": "^2.4.2",
"eslint": "^8.51.0",
"eslint-plugin-svelte": "^2.34.0",
"svelte": "^4.0.5",
"vite": "^4.4.5"
},
"eslintConfig": {
"extends": "./node_modules/@garraflavatra/yeslint/configs/svelte.js",
"rules": {
"array-bracket-newline": "off",
"array-element-newline": "off"
}
}
}

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html, body {
font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
margin: 0;
padding: 0;
width: 100vw;
height: 100vh;
background-color: #eee;
}
* {
font-synthesis: none;
text-rendering: optimizeLegibility;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
-webkit-text-size-adjust: 100%;
box-sizing: border-box;
margin: 0;
padding: 0;
}
#app {
max-width: 1280px;
margin: 0 auto;
padding: 32px;
height: 100%;
}
ul, ol {
margin-left: 1rem;
}
ul li, ol li {
margin-bottom: 4px;
}
dl {
margin: 0;
padding: 0;
}
dl dt {
font-weight: 700;
}
dl dd {
margin: 0 0 12px 0;
}
.card {
background-color: #fff;
padding: 12px;
margin-bottom: 12px;
}
.card h2 {
margin-bottom: 12px;
padding-bottom: 6px;
border-bottom: 1px solid #ddd;
font-size: 22px;
}
.input {
min-width: 100px;
padding: 2px 4px;
font: inherit;
border: 1px solid #888;
border-radius: 4px;
background-color: #fff;
}
*:last-child { margin-bottom: 0; }
@media (prefers-color-scheme: dark) {
html, body {
background-color: #333;
color: #eee;
}
a { color: #ade; }
.card { background-color: #444; }
.card h2 { border-color: #333; }
}

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import './app.css';
import App from './app.svelte';
const app = new App({
target: document.getElementById('app'),
});
export default app;

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<script>
/* global L */
import { onMount } from 'svelte';
import { latLngToDMS, latLngToDecimal, latLngToExif } from './conversion.js';
import { getAppleUrl, getDuckDuckGoUrl, getGoogleUrl } from './urls.js';
let map;
let mapDiv;
let marker;
let coords = L.latLng(51.507, -0.1275);
function updateMap() {
map.setView(coords);
marker.setLatLng(coords);
}
onMount(() => {
map = L.map(mapDiv).setView(coords, 9);
L.tileLayer('https://tile.openstreetmap.org/{z}/{x}/{y}.png', {
maxZoom: 19,
attribution: '&copy; <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a>',
}).addTo(map);
L.polyline([ [ -90, 0 ], [ 90, 0 ] ]).addTo(map);
L.polyline([ [ 0, -180 ], [ 0, 180 ] ]).addTo(map);
marker = L.marker(coords).addTo(map);
map.on('click', event => {
coords = event.latlng;
updateMap();
});
});
</script>
<main class="grid">
<div class="info">
<section class="card">
<h2>Coordinates</h2>
<dl>
<dt>Decimal</dt>
<dd>{latLngToDecimal(coords)}</dd>
<dt>DMS</dt>
<dd>{latLngToDMS(coords)}</dd>
<dt>EXIF</dt>
<dd>{latLngToExif(coords)}</dd>
</dl>
</section>
<section class="card">
<h2>Go to</h2>
<div class="coordinate-input">
<input
class="input"
type="number"
step={0.25}
bind:value={coords.lat}
on:change={updateMap}
/>
<input
class="input"
type="number"
step={0.25}
bind:value={coords.lng}
on:change={updateMap}
/>
</div>
</section>
<section class="card">
<h2>Open in</h2>
<ul>
<li><a href={getAppleUrl(coords)} target="_blank">Apple Maps</a></li>
<li><a href={getGoogleUrl(coords)} target="_blank">Google Maps</a></li>
<li><a href={getDuckDuckGoUrl(coords)} target="_blank">DuckDuckGo</a></li>
</ul>
</section>
<p>
Star gpstool on
<a href="https://github.com/garraflavatra/gpstool" target="_blank" rel="noopener noreferrer">
GitHub
</a>
</p>
</div>
<div class="map" bind:this={mapDiv} />
</main>
<style>
.grid {
display: grid;
grid-template: 1fr / 250px 1fr;
height: 100%;
gap: 12px;
}
@media (max-width: 750px) {
.grid {
grid-template: 1fr 2fr / 1fr;
}
}
.info {
overflow: scroll;
}
.coordinate-input {
display: grid;
gap: 8px;
grid-template: 1fr / 1fr 1fr;
}
</style>

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export function latLngToDecimal({ lat, lng }) {
const precision = 5;
return `${lat.toFixed(precision)}; ${lng.toFixed(precision)}`;
}
// DMS = degrees, minutes, seconds
function decimalToDMS(coord) {
const negative = coord < 0;
coord = Math.abs(coord);
const degrees = Math.trunc(coord);
let minutes = (coord - degrees) * 60;
const seconds = Math.trunc((minutes - Math.trunc(minutes)) * 60);
minutes = Math.trunc(minutes);
return { degrees, minutes, seconds, negative };
}
export function latLngToDMS({ lat, lng }) {
lat = decimalToDMS(lat);
lng = decimalToDMS(lng);
const latRef = lat.negative ? 'S' : 'N';
const lngRef = lng.negative ? 'W' : 'E';
return `${lat.degrees}°${lat.minutes}'${lat.seconds}"${latRef} ` +
`${lng.degrees}°${lng.minutes}'${lng.seconds}"${lngRef}`;
}
export function latLngToExif({ lat, lng }) {
lat = decimalToDMS(lat);
lng = decimalToDMS(lng);
const latRef = lat.negative ? 'S' : 'N';
const lngRef = lng.negative ? 'W' : 'E';
return `${lat.degrees},${lat.minutes}.${lat.seconds}${latRef} ` +
`${lng.degrees},${lng.minutes}.${lng.seconds}${lngRef}`;
}

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import { latLngToDMS } from './conversion.js';
export function getAppleUrl({ lat, lng }) {
return `https://maps.apple.com/?address=${lat},${lng}`;
}
export function getGoogleUrl(latlng) {
return `https://www.google.com/maps/place/${encodeURIComponent(
latLngToDMS(latlng)
)}`;
}
export function getDuckDuckGoUrl(latlng) {
return `https://duckduckgo.com/?q=${encodeURIComponent(
latLngToDMS(latlng)
)}&iaxm=maps`;
}

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/// <reference types="svelte" />
/// <reference types="vite/client" />

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import { vitePreprocess } from '@sveltejs/vite-plugin-svelte';
export default {
preprocess: vitePreprocess(),
compilerOptions: {
cssHash: ({ css, hash }) => `_${hash(css)}`,
},
};

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import { defineConfig } from 'vite';
import { svelte } from '@sveltejs/vite-plugin-svelte';
export default defineConfig({
plugins: [ svelte() ],
});