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<!DOCTYPE html>
<html>
<head>
<title> waterpi </title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
.gallery {
max-width: 800px;
margin: 0 auto;
text-align: center;
}
.main-image {
margin-bottom: 20px;
}
.main-image img {
width: 100%;
height: auto;
display: block;
margin: 0 auto;
}
.controls {
display: flex;
justify-content: center;
gap: 20px;
align-items: center;
}
.nav-button {
padding: 10px 20px;
font-size: 24px;
cursor: pointer;
border: none;
background-color: #f0f0f0;
border-radius: 5px;
transition: background-color 0.3s;
}
.now-button {
padding: 12px 24px;
font-size: 16px;
font-weight: bold;
cursor: pointer;
border: none;
background-color: #4CAF50;
color: white;
border-radius: 5px;
transition: background-color 0.3s;
}
.now-button:hover {
background-color: #45a049;
}
.nav-button:hover {
background-color: #e0e0e0;
}
.nav-button:disabled {
opacity: 0.5;
cursor: not-allowed;
}
</style>
</head>
<body>
<div class="gallery">
<div class="main-image">
<img id="featured" src="" alt="Hauptbild" onerror="this.src='error.png'">
</div>
<div class="controls">
<button onclick="jumpTime(-60)" class="nav-button"><img src="fbck.png"></button>
<button onclick="jumpTime(-15)" class="nav-button"><img src="bck.png"></button>
<button onclick="jumpToCurrent()" class="now-button"><img src="stop.png"></button>
<button onclick="jumpTime(15)" class="nav-button"><img src="fwd.png"></button>
<button onclick="jumpTime(60)" class="nav-button"><img src="ffwd.png"></button>
</div>
</div>
<a href="history.html">go to 12:00 images</a>
</body>
</html>
<script>
let currentDateTime = new Date();
function roundToQuarterHour(date) {
const minutes = date.getMinutes();
const roundedMinutes = Math.floor(minutes / 15) * 15;
const newDate = new Date(date);
newDate.setMinutes(roundedMinutes);
newDate.setSeconds(0);
newDate.setMilliseconds(0);
return newDate;
}
function formatTimeString(date) {
return date.getHours().toString().padStart(2, '0') + '_' +
date.getMinutes().toString().padStart(2, '0');
}
function updateGallery() {
currentDateTime = roundToQuarterHour(new Date());
updateImage();
updateButtons();
}
function jumpTime(minutes) {
const newTime = new Date(currentDateTime.getTime() + minutes * 60000);
const now = new Date();
if (newTime <= now) {
currentDateTime = newTime;
updateImage();
updateButtons();
}
}
function jumpToCurrent() {
currentDateTime = roundToQuarterHour(new Date());
updateImage();
updateButtons();
}
function updateImage() {
const timeString = formatTimeString(currentDateTime);
document.getElementById('featured').src = `${timeString}.jpg`;
}
function updateButtons() {
const now = roundToQuarterHour(new Date());
const buttons = document.querySelectorAll('.nav-button');
// Deaktiviere Vorwärts-Buttons wenn aktuelle Zeit erreicht
buttons[2].disabled = currentDateTime.getTime() + 15 * 60000 > now.getTime();
buttons[3].disabled = currentDateTime.getTime() + 60 * 60000 > now.getTime();
// Deaktiviere den Aktuell-Button wenn bereits das aktuelle Bild angezeigt wird
document.querySelector('.now-button').disabled =
currentDateTime.getTime() === now.getTime();
}
// Initial gallery setup
updateGallery();
// Aktualisiere die Galerie alle 15 Minuten
setInterval(updateGallery, 900000);
</script>
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