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Bratonien-Adventskalender/adventskalender/shared/js/position.js

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/**
* Bratonien Adventskalender Türchen-Positionierung (2025)
* ---------------------------------------------------------
* Liest data-top / data-left / data-width aus jedem .door und .openfield
* und positioniert die Elemente exakt auf dem sichtbaren Bild.
*/
function positionAllDoors() {
const cont = document.querySelector('.kalenderbild');
const img = cont?.querySelector('img');
if (!cont || !img) return;
const imgRect = img.getBoundingClientRect();
const contRect = cont.getBoundingClientRect();
// alle Türchen positionieren
document.querySelectorAll('.door').forEach(door => {
const day = door.dataset.day;
const topPct = parseFloat(door.dataset.top) || 0;
const leftPct = parseFloat(door.dataset.left) || 0;
const widthPct = parseFloat(door.dataset.width) || 10;
const w = imgRect.width * (widthPct / 100);
// Tür positionieren
door.style.position = 'absolute';
door.style.width = w + 'px';
door.style.height = w + 'px';
door.style.top = (imgRect.top - contRect.top + imgRect.height * (topPct / 100)) + 'px';
door.style.left = (imgRect.width * (leftPct / 100) + (contRect.width - imgRect.width) / 2) + 'px';
// passendes openfield finden und synchron positionieren
const field = document.querySelector(`.openfield[data-day="${day}"]`);
if (field) {
field.style.position = 'absolute';
field.style.width = w + 'px';
field.style.height = w + 'px';
field.style.top = door.style.top;
field.style.left = door.style.left;
}
});
}
window.addEventListener('load', positionAllDoors);
window.addEventListener('resize', positionAllDoors);
// iOS / Mobile: neu berechnen bei Drehung oder Wake-up
window.addEventListener('orientationchange', () => {
setTimeout(positionAllDoors, 300); // kleiner Delay für Safari
});
// optional: neu positionieren, wenn die Seite wieder aktiv wird
document.addEventListener('visibilitychange', () => {
if (document.visibilityState === 'visible') {
setTimeout(positionAllDoors, 200);
}
});