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9 Commits

Author SHA1 Message Date
Your Name
cfe891f6b0 feat: add svg hover highlight 2025-10-14 08:26:54 -06:00
Your Name
9bb7ae7213 feat: prefer svg region classes for map selection 2025-10-14 08:25:32 -06:00
Your Name
bb337b6641 chore: add mobile web app meta tag 2025-10-13 22:59:30 -06:00
Your Name
aa76e34d69 fix: use actual timezone offsets in map tooltip 2025-10-13 22:58:45 -06:00
Your Name
2769cb8bf1 feat: add interactive map prototype 2025-10-13 22:55:07 -06:00
Your Name
749ee79619 chore: tweak footer copy 2025-10-13 22:51:58 -06:00
Your Name
b7f3837b1e fix: localize date formatting 2025-10-13 22:49:50 -06:00
Your Name
d58c0723b1 feat: add pwa support 2025-10-13 22:48:34 -06:00
Your Name
e333121999 fix: restore footer attribution 2025-10-13 11:45:47 -06:00
9 changed files with 2573 additions and 4 deletions

13
app.js
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@@ -13,6 +13,8 @@ const POPULAR_NAMES = [
const timezoneByName = new Map(SORTED_TIMEZONE_DATA.map((entry) => [entry.name, entry])); const timezoneByName = new Map(SORTED_TIMEZONE_DATA.map((entry) => [entry.name, entry]));
const LOCALE = 'de-DE';
function normalizeText(value) { function normalizeText(value) {
return value return value
.toLowerCase() .toLowerCase()
@@ -80,7 +82,7 @@ function resolveInitialTheme() {
} }
function buildLocalLabel(timeZone) { function buildLocalLabel(timeZone) {
const formatter = Intl.DateTimeFormat(undefined, { const formatter = Intl.DateTimeFormat(LOCALE, {
timeZone, timeZone,
timeZoneName: 'longGeneric' timeZoneName: 'longGeneric'
}); });
@@ -95,7 +97,7 @@ function buildLocalLabel(timeZone) {
} }
function formatClockValue(date, timeZone) { function formatClockValue(date, timeZone) {
return new Intl.DateTimeFormat(undefined, { return new Intl.DateTimeFormat(LOCALE, {
timeZone, timeZone,
hour: '2-digit', hour: '2-digit',
minute: '2-digit', minute: '2-digit',
@@ -105,7 +107,7 @@ function formatClockValue(date, timeZone) {
} }
function formatDateValue(date, timeZone) { function formatDateValue(date, timeZone) {
return new Intl.DateTimeFormat(undefined, { return new Intl.DateTimeFormat(LOCALE, {
timeZone, timeZone,
weekday: 'long', weekday: 'long',
year: 'numeric', year: 'numeric',
@@ -361,6 +363,11 @@ hasExplicitThemePreference = Boolean(window.localStorage.getItem(THEME_STORAGE_K
window.addEventListener('load', () => { window.addEventListener('load', () => {
startClock(); startClock();
renderSearchResults(''); renderSearchResults('');
if ('serviceWorker' in navigator) {
navigator.serviceWorker.register('service-worker.js').catch((error) => {
console.error('Service Worker Registrierung fehlgeschlagen:', error);
});
}
}); });
if (themeToggleButton) { if (themeToggleButton) {

1833
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172
index-map.html Normal file
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@@ -0,0 +1,172 @@
<!DOCTYPE html>
<html lang="de">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Weltze.it — Alle Zeitzonen im Blick</title>
<meta name="theme-color" content="#0f172a">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
<link rel="stylesheet" href="styles.css">
<style>
.layout {
grid-template-rows: auto auto;
}
.map-panel {
background: var(--panel-background);
border: var(--border-thickness) solid var(--panel-border);
border-radius: 18px;
padding: clamp(1.2rem, 4vw, 1.8rem);
backdrop-filter: blur(6px);
box-shadow: var(--panel-shadow);
display: flex;
flex-direction: column;
gap: 1rem;
}
.map-panel header {
display: flex;
flex-direction: column;
gap: 0.3rem;
}
.map-panel h3 {
font-size: 1.1rem;
font-weight: 700;
}
.map-panel p {
color: var(--text-color-alt);
font-size: 0.9rem;
line-height: 1.4;
}
.map-container {
position: relative;
width: 100%;
aspect-ratio: 12 / 5;
border: var(--border-thickness) solid var(--panel-border);
border-radius: 14px;
overflow: hidden;
background: var(--background-color-alt);
}
.map-container svg {
width: 100%;
height: 100%;
cursor: crosshair;
}
.map-container svg .hover-highlight {
filter: drop-shadow(0 0 6px rgba(14, 165, 233, 0.75));
}
.map-overlay {
position: absolute;
inset: 0;
pointer-events: none;
display: flex;
align-items: center;
justify-content: center;
font-size: 2rem;
font-weight: 700;
color: rgba(255,255,255,0.85);
text-shadow: 0 3px 12px rgba(0,0,0,0.4);
opacity: 0;
transition: opacity 0.2s ease;
}
.map-overlay.visible {
opacity: 1;
}
.map-tooltip {
position: absolute;
background: rgba(15, 23, 42, 0.85);
color: #f8fafc;
padding: 0.45rem 0.75rem;
border-radius: 8px;
font-size: 0.85rem;
pointer-events: none;
transform: translate(-50%, -120%);
white-space: pre;
opacity: 0;
transition: opacity 0.15s ease;
}
.map-tooltip.visible {
opacity: 1;
}
@media (max-width: 960px) {
.layout {
grid-template-rows: auto;
}
.map-panel {
order: 2;
}
.comparisons {
order: 3;
}
}
</style>
<link rel="manifest" href="manifest.webmanifest">
<link rel="icon" type="image/png" sizes="192x192" href="icons/icon-192.png">
<link rel="icon" type="image/png" sizes="512x512" href="icons/icon-512.png">
<link rel="apple-touch-icon" href="icons/icon-192.png">
<script defer src="https://umami.due.ren/script.js" data-website-id="4692d3ad-c36a-4fb9-a7f0-182a8fe72a0b"></script>
</head>
<body>
<header class="site-header">
<div class="brand">
<h1>weltze.it</h1>
<p>Alle Zeitzonen auf den ersten Blick.</p>
</div>
<button id="theme-toggle" class="theme-toggle" type="button" aria-label="Dunklen Modus umschalten">
<span class="theme-toggle-icon" aria-hidden="true"></span>
<span class="theme-toggle-label">Dunkler Modus</span>
</button>
<div class="local-time">
<h2>Deine aktuelle Zeit</h2>
<div id="local-time" class="time-display">--:--</div>
<div id="local-date" class="date-display"></div>
<div id="local-zone" class="zone-display"></div>
</div>
</header>
<main class="layout">
<section class="search-panel">
<h3>Finde eine Stadt oder Zeitzone</h3>
<label for="search-input" class="visually-hidden">Suche Stadt, Land oder Zeitzone</label>
<input id="search-input" class="search-input" type="search" placeholder="Suche nach Städten, Ländern oder Zeitzonen…" autocomplete="off">
<div id="search-results" class="search-results"></div>
<div class="tips">
<strong>Tipp:</strong> Füge mehrere Orte hinzu, um Abweichungen direkt zu vergleichen.
</div>
</section>
<section class="map-panel">
<header>
<h3>Interaktive Zeitzonen-Karte (Prototyp)</h3>
<p>Tippe auf einen Punkt der Karte, um die nächstgelegene Zeitzone zu übernehmen. Die Karte verwendet das Wikimedia-Weltzeit-Zonen-SVG.</p>
</header>
<div id="map-container" class="map-container">
<div class="map-overlay" id="map-overlay">UTC±00:00</div>
<div class="map-tooltip" id="map-tooltip"></div>
</div>
<p class="map-disclaimer">Quelle: <a href="https://en.wikipedia.org/wiki/Time_zone">Wikipedia Time zone</a> · Lizenz: CC-BY-SA 4.0</p>
</section>
<section class="comparisons">
<header class="comparisons-header">
<h3>Ausgewählte Orte</h3>
<button id="reset-button" class="reset-button" type="button">Nur lokalen Ort behalten</button>
</header>
<div class="table-headings">
<div>Ort</div>
<div>Aktuelle Zeit</div>
<div>Abweichung zur lokalen Zeit</div>
</div>
<ul id="selection-list" class="selection-list"></ul>
</section>
</main>
<footer class="site-footer">
<p><a href="https://git.due.ren/andreas/weltze.it">Ein OpenSourceProjekt</a> von <a href="https://andreas.due.ren">Andreas Düren</a></p>
</footer>
<script src="zones.js"></script>
<script src="app.js"></script>
<script src="map-prototype.js"></script>
</body>
</html>

View File

@@ -4,7 +4,15 @@
<meta charset="UTF-8"> <meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Weltze.it — Alle Zeitzonen im Blick</title> <title>Weltze.it — Alle Zeitzonen im Blick</title>
<meta name="theme-color" content="#0f172a">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
<link rel="stylesheet" href="styles.css"> <link rel="stylesheet" href="styles.css">
<link rel="manifest" href="manifest.webmanifest">
<link rel="icon" type="image/png" sizes="192x192" href="icons/icon-192.png">
<link rel="icon" type="image/png" sizes="512x512" href="icons/icon-512.png">
<link rel="apple-touch-icon" href="icons/icon-192.png">
<script defer src="https://umami.due.ren/script.js" data-website-id="4692d3ad-c36a-4fb9-a7f0-182a8fe72a0b"></script> <script defer src="https://umami.due.ren/script.js" data-website-id="4692d3ad-c36a-4fb9-a7f0-182a8fe72a0b"></script>
</head> </head>
<body> <body>
@@ -51,7 +59,7 @@
</main> </main>
<footer class="site-footer"> <footer class="site-footer">
<p>von Andreas Dueren (andreas.due.ren) · Open Source unter der <a href="LICENSE">MIT-Lizenz</a></p> <p><a href="https://git.due.ren/andreas/weltze.it">Ein OpenSourceProjekt</a> von <a href="https://andreas.due.ren">Andreas Düren</a></p>
</footer> </footer>
<script src="zones.js"></script> <script src="zones.js"></script>

25
manifest.webmanifest Normal file
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@@ -0,0 +1,25 @@
{
"name": "Weltze.it — Alle Zeitzonen im Blick",
"short_name": "Weltze.it",
"description": "Alle Zeitzonen auf einen Blick vergleichen und Termine koordinieren.",
"lang": "de",
"start_url": "./",
"scope": "./",
"display": "standalone",
"background_color": "#ffffff",
"theme_color": "#0f172a",
"icons": [
{
"src": "icons/icon-192.png",
"sizes": "192x192",
"type": "image/png",
"purpose": "any"
},
{
"src": "icons/icon-512.png",
"sizes": "512x512",
"type": "image/png",
"purpose": "any maskable"
}
]
}

468
map-prototype.js Normal file
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@@ -0,0 +1,468 @@
const MAP_SVG_SOURCE = 'assets/world_time_zones.svg';
const OFFSET_PRECISION = 30; // Minuten-Schrittweite
const CLASS_TO_TIMEZONE = {
// Europe
ad: 'Europe/Madrid',
al: 'Europe/Athens',
at: 'Europe/Vienna',
ba: 'Europe/Bucharest',
be: 'Europe/Amsterdam',
bg: 'Europe/Sofia',
ch: 'Europe/Zurich',
cz: 'Europe/Berlin',
de: 'Europe/Berlin',
dk: 'Europe/Copenhagen',
ee: 'Europe/Helsinki',
es: 'Europe/Madrid',
fi: 'Europe/Helsinki',
fr: 'Europe/Paris',
gb: 'Europe/London',
gr: 'Europe/Athens',
hr: 'Europe/Rome',
hu: 'Europe/Vienna',
ie: 'Europe/Dublin',
is: 'Atlantic/Reykjavik',
it: 'Europe/Rome',
li: 'Europe/Zurich',
lt: 'Europe/Riga',
lu: 'Europe/Amsterdam',
lv: 'Europe/Riga',
mt: 'Europe/Rome',
nl: 'Europe/Amsterdam',
no: 'Europe/Oslo',
pl: 'Europe/Warsaw',
pt0: 'Europe/Lisbon',
pt: 'Europe/Lisbon',
'pt-1': 'Europe/Lisbon',
ro: 'Europe/Bucharest',
rs: 'Europe/Athens',
se: 'Europe/Stockholm',
si: 'Europe/Vienna',
sk: 'Europe/Vienna',
ua: 'Europe/Kyiv',
ua2: 'Europe/Kyiv',
ua3: 'Europe/Kyiv',
va: 'Europe/Rome',
// Americas
ar: 'America/Argentina/Buenos_Aires',
bb: 'America/Barbados',
bo: 'America/La_Paz',
'br-4': 'America/Manaus',
'br-3': 'America/Sao_Paulo',
'br-2': 'America/Sao_Paulo',
'ca-4': 'America/Halifax',
'ca-5': 'America/Toronto',
'ca-6': 'America/Winnipeg',
'ca-7': 'America/Edmonton',
'ca-8': 'America/Vancouver',
'ca-330': 'America/St_Johns',
'ca-4n': 'America/Halifax',
'ca-5n': 'America/Toronto',
'ca-6n': 'America/Winnipeg',
'ca-7n': 'America/Edmonton',
'ca-8n': 'America/Vancouver',
'cl-3': 'America/Santiago',
'cl-4': 'America/Santiago',
co: 'America/Bogota',
cu: 'America/Havana',
'ec-5': 'America/Guayaquil',
'ec-6': 'America/Guayaquil',
gt: 'America/Guatemala',
hn: 'America/Tegucigalpa',
jm: 'America/Jamaica',
'mx-5': 'America/Mexico_City',
'mx-6': 'America/Mexico_City',
'mx-7': 'America/Ciudad_Juarez',
'mx-8': 'America/Tijuana',
'mx-5b': 'America/Mexico_City',
'mx-6b': 'America/Mexico_City',
'mx-7b': 'America/Ciudad_Juarez',
'mx-8b': 'America/Tijuana',
ni: 'America/Managua',
pa: 'America/Panama',
pe: 'America/Lima',
pr: 'America/Puerto_Rico',
'us-5': 'America/New_York',
'us-6': 'America/Chicago',
'us-7': 'America/Denver',
'us-8': 'America/Los_Angeles',
'us-9': 'America/Anchorage',
'us-10': 'Pacific/Honolulu',
'us-10n': 'Pacific/Honolulu',
'us-9n': 'America/Anchorage',
'us-8n': 'America/Los_Angeles',
'us-7n': 'America/Denver',
'us-6n': 'America/Chicago',
'us-5n': 'America/New_York',
uy: 'America/Montevideo',
ve: 'America/Caracas',
// Africa
ao: 'Africa/Luanda',
bf: 'Africa/Abidjan',
bi: 'Africa/Maputo',
bj: 'Africa/Lagos',
bw: 'Africa/Johannesburg',
cd1: 'Africa/Kinshasa',
cd2: 'Africa/Lubumbashi',
cf: 'Africa/Bangui',
cg: 'Africa/Lagos',
ci: 'Africa/Abidjan',
cm: 'Africa/Douala',
dz: 'Africa/Algiers',
eg: 'Africa/Cairo',
et: 'Africa/Addis_Ababa',
gh: 'Africa/Accra',
gm: 'Africa/Abidjan',
gn: 'Africa/Conakry',
gq: 'Africa/Lagos',
ke: 'Africa/Nairobi',
lr: 'Africa/Monrovia',
ls: 'Africa/Johannesburg',
ly: 'Africa/Tripoli',
ma: 'Africa/Casablanca',
mg: 'Africa/Nairobi',
ml: 'Africa/Bamako',
mr: 'Africa/Nouakchott',
mu: 'Africa/Nairobi',
mw: 'Africa/Maputo',
mz: 'Africa/Maputo',
na: 'Africa/Windhoek',
ne: 'Africa/Lagos',
ng: 'Africa/Lagos',
rw: 'Africa/Maputo',
sd: 'Africa/Khartoum',
sl: 'Africa/Abidjan',
sn: 'Africa/Dakar',
tn: 'Africa/Tunis',
tz: 'Africa/Nairobi',
ug: 'Africa/Nairobi',
za2: 'Africa/Johannesburg',
za3: 'Africa/Johannesburg',
zm: 'Africa/Maputo',
zw: 'Africa/Maputo',
// Middle East & Asia
ae: 'Asia/Dubai',
af: 'Asia/Kabul',
am: 'Asia/Yerevan',
az: 'Asia/Baku',
bh: 'Asia/Bahrain',
cn: 'Asia/Shanghai',
ge: 'Asia/Tbilisi',
il: 'Asia/Jerusalem',
in: 'Asia/Kolkata',
iq: 'Asia/Baghdad',
ir: 'Asia/Tehran',
jo: 'Asia/Amman',
jp: 'Asia/Tokyo',
kg: 'Asia/Bishkek',
kz: 'Asia/Almaty',
kw: 'Asia/Kuwait',
lb: 'Asia/Beirut',
lk: 'Asia/Colombo',
mm: 'Asia/Yangon',
mn7: 'Asia/Irkutsk',
mn8: 'Asia/Irkutsk',
mv: 'Asia/Dubai',
my: 'Asia/Kuala_Lumpur',
np: 'Asia/Kathmandu',
om: 'Asia/Dubai',
ph: 'Asia/Manila',
pk: 'Asia/Karachi',
qa: 'Asia/Qatar',
ru2: 'Europe/Moscow',
ru3: 'Europe/Moscow',
ru4: 'Europe/Samara',
ru5: 'Asia/Yekaterinburg',
ru6: 'Asia/Omsk',
ru7: 'Asia/Krasnoyarsk',
ru8: 'Asia/Irkutsk',
ru9: 'Asia/Yakutsk',
ru10: 'Asia/Vladivostok',
ru11: 'Asia/Magadan',
ru12: 'Asia/Kamchatka',
sa: 'Asia/Riyadh',
sg: 'Asia/Singapore',
sy: 'Asia/Damascus',
th: 'Asia/Bangkok',
tj: 'Asia/Dushanbe',
tm: 'Asia/Ashgabat',
tr: 'Europe/Istanbul',
uz: 'Asia/Tashkent',
vn: 'Asia/Ho_Chi_Minh',
ye: 'Asia/Aden',
// Oceania
au8: 'Australia/Perth',
au10: 'Australia/Sydney',
au10n: 'Australia/Sydney',
au1030: 'Australia/Sydney',
au930: 'Australia/Perth',
au930n: 'Australia/Perth',
au845: 'Australia/Perth',
fj: 'Pacific/Fiji',
gu: 'Pacific/Port_Moresby',
nc: 'Pacific/Noumea',
nz12: 'Pacific/Auckland',
nz1245: 'Pacific/Auckland',
'pf-10': 'Pacific/Honolulu',
'pf-9': 'Pacific/Honolulu',
'pf-930': 'Pacific/Honolulu',
to: 'Pacific/Auckland',
ws: 'Pacific/Auckland',
tk: 'Pacific/Auckland'
};
const timezoneById = new Map(TIMEZONE_DATA.map((entry) => [entry.timeZone, entry]));
const mapContainer = document.getElementById('map-container');
const overlayEl = document.getElementById('map-overlay');
const tooltipEl = document.getElementById('map-tooltip');
if (mapContainer) {
loadMap();
}
function getEntryForTimeZone(timeZoneId) {
if (!timeZoneId) {
return null;
}
if (timezoneById.has(timeZoneId)) {
return timezoneById.get(timeZoneId);
}
return SORTED_TIMEZONE_DATA.find((entry) => entry.timeZone === timeZoneId) || null;
}
function resolveEntryFromElement(element) {
if (!element) {
return null;
}
const candidate = element.closest('[class]');
if (!candidate) {
return null;
}
lastHoveredElement = candidate;
const classAttr = candidate.getAttribute('class');
if (!classAttr) {
return null;
}
const classes = classAttr.split(/\s+/);
for (const cls of classes) {
const timeZoneId = CLASS_TO_TIMEZONE[cls];
const entry = getEntryForTimeZone(timeZoneId);
if (entry) {
return entry;
}
}
return null;
}
let lastHoveredElement = null;
function loadMap() {
fetch(MAP_SVG_SOURCE)
.then((response) => response.text())
.then((svgText) => {
mapContainer.insertAdjacentHTML('afterbegin', svgText);
const svg = mapContainer.querySelector('svg');
if (!svg) {
throw new Error('SVG nicht gefunden.');
}
svg.setAttribute('viewBox', '0 0 3600 1500');
svg.setAttribute('preserveAspectRatio', 'xMidYMid meet');
svg.style.width = '100%';
svg.style.height = '100%';
attachMapListeners(svg);
})
.catch((error) => {
console.error('Karte konnte nicht geladen werden:', error);
mapContainer.innerHTML = '<p>Die Zeitzonenkarte konnte nicht geladen werden.</p>';
});
}
function attachMapListeners(svg) {
const svgPoint = svg.createSVGPoint();
function clearHighlight() {
if (lastHoveredElement) {
lastHoveredElement.classList.remove('hover-highlight');
lastHoveredElement = null;
}
}
function getRelativePoint(event) {
svgPoint.x = event.clientX;
svgPoint.y = event.clientY;
const ctm = svg.getScreenCTM();
if (!ctm) {
return { x: 0, y: 0 };
}
const inverse = ctm.inverse();
const transformed = svgPoint.matrixTransform(inverse);
return { x: transformed.x, y: transformed.y };
}
function handlePointerMove(event) {
const { x, y } = getRelativePoint(event);
const lon = normalizeLongitude(x, svg.viewBox.baseVal.width);
const lat = normalizeLatitude(y, svg.viewBox.baseVal.height);
clearHighlight();
const classEntry = resolveEntryFromElement(event.target);
if (lastHoveredElement) {
lastHoveredElement.classList.add('hover-highlight');
}
if (classEntry) {
const suggestion = buildSuggestion(classEntry);
positionTooltip(event.clientX, event.clientY, `${suggestion.offsetLabel}\n${classEntry.name}`);
return;
}
const offsetMinutes = approximateOffsetMinutes(lon);
const candidate = findTimezoneByOffset(offsetMinutes);
if (candidate) {
const suggestion = buildSuggestion(candidate);
positionTooltip(event.clientX, event.clientY, `${suggestion.offsetLabel}\n${candidate.name}`);
} else {
const { offsetLabel } = describeOffset(offsetMinutes);
positionTooltip(event.clientX, event.clientY, `${offsetLabel}\n${formatCoordinate(lat, lon)}`);
}
}
function handlePointerLeave() {
tooltipEl?.classList.remove('visible');
clearHighlight();
}
function handleClick(event) {
const { x } = getRelativePoint(event);
const lon = normalizeLongitude(x, svg.viewBox.baseVal.width);
const classEntry = resolveEntryFromElement(event.target);
let labelToShow;
if (classEntry) {
const suggestion = buildSuggestion(classEntry);
labelToShow = suggestion.offsetLabel;
if (typeof addSelection === 'function') {
addSelection(classEntry);
renderSelections();
}
} else {
const offsetMinutes = approximateOffsetMinutes(lon);
const candidate = findTimezoneByOffset(offsetMinutes);
if (candidate) {
const suggestion = buildSuggestion(candidate);
labelToShow = suggestion.offsetLabel;
if (typeof addSelection === 'function') {
addSelection(candidate);
renderSelections();
}
} else {
const { offsetLabel } = describeOffset(offsetMinutes);
labelToShow = offsetLabel;
}
}
showOverlay(labelToShow);
}
svg.addEventListener('pointermove', handlePointerMove);
svg.addEventListener('pointerleave', handlePointerLeave);
svg.addEventListener('click', handleClick);
}
function normalizeLongitude(x, width) {
const clampedWidth = width || 3600;
return (x / clampedWidth) * 360 - 180;
}
function normalizeLatitude(y, height) {
const clampedHeight = height || 1500;
return 90 - (y / clampedHeight) * 180;
}
function approximateOffsetMinutes(longitude) {
const offsetHours = Math.round((longitude / 15) * (60 / OFFSET_PRECISION)) * (OFFSET_PRECISION / 60);
const clampedHours = Math.min(14, Math.max(-12, offsetHours));
return Math.round(clampedHours * 60);
}
function describeOffset(offsetMinutes) {
const clamped = Math.round(offsetMinutes / OFFSET_PRECISION) * OFFSET_PRECISION;
const hours = Math.trunc(clamped / 60);
const minutes = Math.abs(clamped % 60);
const sign = clamped >= 0 ? '+' : '-';
return {
offsetMinutesRounded: clamped,
offsetLabel: `UTC${sign}${String(Math.abs(hours)).padStart(2, '0')}:${String(minutes).padStart(2, '0')}`
};
}
function positionTooltip(clientX, clientY, text) {
if (!tooltipEl) {
return;
}
const containerRect = mapContainer.getBoundingClientRect();
tooltipEl.textContent = text;
tooltipEl.style.left = `${clientX - containerRect.left}px`;
tooltipEl.style.top = `${clientY - containerRect.top}px`;
tooltipEl.classList.add('visible');
}
let overlayTimeoutId = null;
function showOverlay(text) {
if (!overlayEl) {
return;
}
overlayEl.textContent = text;
overlayEl.classList.add('visible');
if (overlayTimeoutId) {
clearTimeout(overlayTimeoutId);
}
overlayTimeoutId = window.setTimeout(() => {
overlayEl?.classList.remove('visible');
}, 1500);
}
function formatCoordinate(lat, lon) {
const formatValue = (value, positiveSuffix, negativeSuffix) => {
const suffix = value >= 0 ? positiveSuffix : negativeSuffix;
return `${Math.abs(value).toFixed(1)}°${suffix}`;
};
return `${formatValue(lat, 'N', 'S')} · ${formatValue(lon, 'E', 'W')}`;
}
function findTimezoneByOffset(targetOffsetMinutes) {
const now = new Date();
let bestCandidate = null;
let bestDelta = Infinity;
SORTED_TIMEZONE_DATA.forEach((entry) => {
const offset = getOffsetMinutes(now, entry.timeZone);
const delta = Math.abs(offset - targetOffsetMinutes);
if (delta < bestDelta) {
bestDelta = delta;
bestCandidate = entry;
}
});
return bestCandidate;
}
function buildSuggestion(entry) {
const now = new Date();
const offsetMinutes = getOffsetMinutes(now, entry.timeZone);
const hours = Math.trunc(offsetMinutes / 60);
const minutes = Math.abs(offsetMinutes % 60);
const sign = offsetMinutes >= 0 ? '+' : '-';
return {
offsetMinutes,
offsetLabel: `UTC${sign}${String(Math.abs(hours)).padStart(2, '0')}:${String(minutes).padStart(2, '0')}`
};
}

56
service-worker.js Normal file
View File

@@ -0,0 +1,56 @@
const CACHE_NAME = 'weltzeit-cache-v1';
const PRECACHE_RESOURCES = [
'./',
'./index.html',
'./styles.css',
'./app.js',
'./zones.js',
'./manifest.webmanifest',
'./icons/icon-192.png',
'./icons/icon-512.png'
];
self.addEventListener('install', (event) => {
event.waitUntil(
caches.open(CACHE_NAME).then((cache) => cache.addAll(PRECACHE_RESOURCES))
);
});
self.addEventListener('activate', (event) => {
event.waitUntil(
caches.keys().then((cacheNames) =>
Promise.all(
cacheNames.map((cacheName) => {
if (cacheName !== CACHE_NAME) {
return caches.delete(cacheName);
}
return undefined;
})
)
)
);
});
self.addEventListener('fetch', (event) => {
if (event.request.method !== 'GET') {
return;
}
event.respondWith(
caches.match(event.request).then((cachedResponse) => {
if (cachedResponse) {
return cachedResponse;
}
return fetch(event.request)
.then((response) => {
const responseClone = response.clone();
caches.open(CACHE_NAME).then((cache) => {
cache.put(event.request, responseClone);
});
return response;
})
.catch(() => caches.match('./index.html'));
})
);
});