add lang debug

2026-05-21 05:52:17 +00:00 · 2025-10-17 11:37:23 +02:00
parent b068aacca1
commit c75a87b151
2 changed files with 91 additions and 0 deletions
--- a/website/public/debug/lang/switch.html
+++ b/website/public/debug/lang/switch.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>OpenFreeMap Debug</title>
+    <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>
+    <script src="https://unpkg.com/maplibre-gl/dist/maplibre-gl.js"></script>
+    <script src="switch.js"></script>
+</body>
+</html>
--- a/website/public/debug/lang/switch.js
+++ b/website/public/debug/lang/switch.js
@@ -0,0 +1,76 @@
+const map = new maplibregl.Map({
+  container: 'map',
+  style: 'https://tiles.openfreemap.org/styles/liberty',
+  center: [0, 0],
+  zoom: 2,
+})
+
+function modifyStyle({ style, langCode }) {
+  if (!langCode) {
+    langCode = 'en'
+  }
+
+  for (const layer of style.layers) {
+    if (layer.source !== 'openmaptiles') continue
+    if (!layer.layout) continue
+
+    const textField = layer.layout['text-field']
+    if (!textField) continue
+
+    // highway numbers, etc. - skip ref-only fields
+    if (JSON.stringify(textField) === JSON.stringify(['to-string', ['get', 'ref']])) continue
+
+    const id = layer.id
+
+    let separator
+    if (id.includes('line') || id.includes('highway')) {
+      separator = ' '
+    } else {
+      separator = '\n'
+    }
+
+    // the default is "en", not "int"
+    let parts
+    if (langCode === 'int') {
+      parts = [['get', 'name']]
+    } else {
+      parts = [
+        ['get', `name_${langCode}`],
+        ['get', `name:${langCode}`],
+        ['get', 'name'],
+      ]
+    }
+
+    layer.layout['text-field'] = [
+      'case',
+      ['has', 'name:nonlatin'],
+      ['concat', ['get', 'name:latin'], separator, ['get', 'name:nonlatin']],
+      ['coalesce', ...parts],
+    ]
+  }
+}
+
+function applyLanguage() {
+  const hash = window.location.hash.substring(1); // Remove the '#'
+  const langCode = hash || null;
+
+  const style = map.getStyle()
+  modifyStyle({ style, langCode })
+  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.\n\nExamples:\n• #en → English\n• #de → German\n• #fr → French\n• #es → Spanish\n• #int → International names\n\nDefault language set to: en (English)')
+    window.location.hash = '#es'
+    // The hashchange event will trigger applyLanguage()
+  } else {
+    applyLanguage()
+  }
+})
+
+// Listen for hash changes in URL
+window.addEventListener('hashchange', () => {
+  applyLanguage()
+})