This commit is contained in:
Zsolt Ero
2025-10-22 11:50:35 +02:00
parent b43a1f5830
commit 0dc7551eca
2 changed files with 157 additions and 38 deletions

View File

@@ -7,8 +7,53 @@
<script src="https://cdn.jsdelivr.net/npm/@tailwindcss/browser@4"></script>
<link href="https://unpkg.com/maplibre-gl/dist/maplibre-gl.css" rel="stylesheet" />
</head>
<body>
<div id="map" class="w-full h-screen"></div>
<body class="flex flex-col h-screen">
<!-- UI Panel -->
<div class="bg-gray-900 border-b border-gray-700 shadow-md">
<div class="max-w-7xl mx-auto px-4 py-2">
<div class="flex items-center gap-3">
<div class="flex-1">
<label for="line1" class="block text-xs font-medium text-gray-400 mb-1">
Line 1
</label>
<input
type="text"
id="line1"
class="w-full px-3 py-1.5 text-sm border border-gray-600 rounded bg-gray-800 text-gray-100 focus:outline-none focus:border-blue-500 focus:ring-1 focus:ring-blue-500 transition-all font-mono"
placeholder="underscore,colon,name,latin"
/>
</div>
<div class="flex-1">
<label for="line2" class="block text-xs font-medium text-gray-400 mb-1">
Line 2
</label>
<input
type="text"
id="line2"
class="w-full px-3 py-1.5 text-sm border border-gray-600 rounded bg-gray-800 text-gray-100 focus:outline-none focus:border-blue-500 focus:ring-1 focus:ring-blue-500 transition-all font-mono"
placeholder="nonlatin"
/>
</div>
<div class="w-24">
<label for="lang" class="block text-xs font-medium text-gray-400 mb-1">
Lang
</label>
<input
type="text"
id="lang"
class="w-full px-3 py-1.5 text-sm border border-gray-600 rounded bg-gray-800 text-gray-100 focus:outline-none focus:border-blue-500 focus:ring-1 focus:ring-blue-500 transition-all font-mono text-center"
placeholder="en"
maxlength="5"
/>
</div>
</div>
</div>
</div>
<div id="map" class="flex-1"></div>
<script src="https://unpkg.com/maplibre-gl/dist/maplibre-gl.js"></script>
<script src="mix.js"></script>
</body>

View File

@@ -1,16 +1,59 @@
const map = new maplibregl.Map({
container: 'map',
hash: 'map',
style: 'https://tiles.openfreemap.org/styles/liberty',
center: [0, 0],
zoom: 2,
})
function modifyStyle({ style, langCode }) {
if (!langCode) {
langCode = 'en'
const line1Input = document.getElementById('line1')
const line2Input = document.getElementById('line2')
const langInput = document.getElementById('lang')
// Parse URL search params to get line1 and line2
function parseParams() {
const params = new URLSearchParams(window.location.search)
return {
line1: params.get('line1') || 'underscore,colon,name,latin',
line2: params.get('line2') || 'nonlatin',
lang: params.get('lang') || 'en',
}
}
// Update URL search params
function updateParams(line1, line2, lang) {
const url = new URL(window.location)
url.searchParams.set('line1', line1)
url.searchParams.set('line2', line2)
url.searchParams.set('lang', lang)
window.history.replaceState({}, '', url)
}
// Build field accessor from config string
function buildFieldAccessor(config, langCode) {
const parts = []
const fields = config.split(',').map(f => f.trim()).filter(f => f)
for (const field of fields) {
if (field === 'underscore') {
parts.push(['get', `name_${langCode}`])
} else if (field === 'colon') {
parts.push(['get', `name:${langCode}`])
} else if (field === 'name') {
parts.push(['get', 'name'])
} else if (field === 'latin') {
parts.push(['get', 'name:latin'])
} else if (field === 'nonlatin') {
parts.push(['get', 'name:nonlatin'])
} else {
// Custom field name
parts.push(['get', field])
}
}
return parts.length > 0 ? ['coalesce', ...parts] : ['get', 'name']
}
function modifyStyle({ style, line1Config, line2Config, langCode }) {
for (const layer of style.layers) {
if (layer.source !== 'openmaptiles') continue
if (!layer.layout) continue
@@ -18,49 +61,80 @@ function modifyStyle({ style, langCode }) {
const textField = layer.layout['text-field']
if (!textField) continue
// highway numbers, etc. - skip ref-only fields
// Skip ref-only fields
if (JSON.stringify(textField) === JSON.stringify(['to-string', ['get', 'ref']])) continue
const nameUnderscore = `name_${langCode}`
const nameColon = `name:${langCode}`
const id = layer.id
let separator = id.includes('line') || id.includes('highway') ? ' ' : '\n'
// Always display both values
layer.layout['text-field'] = ['concat', ['get', nameUnderscore], '\n', ['get', nameColon]]
const line1Expr = buildFieldAccessor(line1Config, langCode)
const line2Expr = buildFieldAccessor(line2Config, langCode)
// Color red when they are different
if (!layer.paint) layer.paint = {}
layer.paint['text-color'] = [
'case',
['!=', ['get', nameUnderscore], ['get', nameColon]],
'#ff0000', // Red when different
'#000000', // Default color when same (adjust as needed)
]
// Combine both lines
layer.layout['text-field'] = ['concat', line1Expr, separator, line2Expr]
}
}
function applyLanguage() {
const hash = window.location.hash.substring(1) // Remove the '#'
const langCode = hash || null
function applyConfiguration() {
const { line1, line2, lang } = parseParams()
if (!map.getStyle()) return
const style = map.getStyle()
modifyStyle({ style, langCode })
modifyStyle({ style, line1Config: line1, line2Config: line2, langCode: lang })
map.setStyle(style, { diff: false })
}
map.on('load', () => {
// Add default hash if not present
if (!window.location.hash) {
alert(
'To change the map language, modify the language code in the URL #.\nLabels will be RED when different.\nname_xx on line 1, name:xx on line 2',
)
window.location.hash = '#en'
// The hashchange event will trigger applyLanguage()
} else {
applyLanguage()
function syncInputsFromParams() {
const { line1, line2, lang } = parseParams()
line1Input.value = line1
line2Input.value = line2
langInput.value = lang
}
// Update params when inputs change
line1Input.addEventListener('input', () => {
updateParams(line1Input.value, line2Input.value, langInput.value)
})
// Listen for hash changes in URL
window.addEventListener('hashchange', () => {
applyLanguage()
line2Input.addEventListener('input', () => {
updateParams(line1Input.value, line2Input.value, langInput.value)
})
langInput.addEventListener('input', () => {
updateParams(line1Input.value, line2Input.value, langInput.value)
})
// Apply configuration when Enter is pressed
line1Input.addEventListener('keypress', (e) => {
if (e.key === 'Enter') applyConfiguration()
})
line2Input.addEventListener('keypress', (e) => {
if (e.key === 'Enter') applyConfiguration()
})
langInput.addEventListener('keypress', (e) => {
if (e.key === 'Enter') applyConfiguration()
})
map.on('load', () => {
// Initialize params if not present
const params = new URLSearchParams(window.location.search)
if (!params.has('line1') || !params.has('line2') || !params.has('lang')) {
const url = new URL(window.location)
if (!params.has('line1')) url.searchParams.set('line1', 'underscore,colon,name,latin')
if (!params.has('line2')) url.searchParams.set('line2', 'nonlatin')
if (!params.has('lang')) url.searchParams.set('lang', 'en')
window.history.replaceState({}, '', url)
}
syncInputsFromParams()
applyConfiguration()
})
// Listen for URL changes (e.g., browser back/forward)
window.addEventListener('popstate', () => {
syncInputsFromParams()
applyConfiguration()
})