hippie/source/screens/demo/examples/clock.liquid

---
title: Clock
tags:
- demoExample
---
{% assign pageBase = "../../" -%}
{% assign bodyClass = "body_clock" -%}
{% layout "hippie/full.liquid" %}

{% block body %}
<main>
	<canvas id="clock" width="512" height="512"></canvas>
	<p>
		<button id="toggleFormat">12-Stunden-Format</button>
	</p>
</main>
{% endblock %}

{% block script %}
{{ block.super -}}
<script>
	// Page script
	const canvas = document.getElementById('clock');
	const ctx = canvas.getContext('2d');
	let is24HourFormat = true;

	document.getElementById('toggleFormat').addEventListener('click', () => {
		is24HourFormat = !is24HourFormat;
		document.getElementById('toggleFormat').textContent = is24HourFormat ? '12-Stunden-Format' : '24-Stunden-Format';
	});

	function drawCircle(seconds, minutes, hours, dayOfWeek, month) {
		const centerX = canvas.width / 2;
		const centerY = canvas.height / 2;
		const radius = 128;

		ctx.clearRect(0, 0, canvas.width, canvas.height);

		function drawArc(value, maxValue, radius, strokeStyle) {
			const startAngle = -0.5 * Math.PI; // Start at the top
			const endAngle = startAngle + (2 * Math.PI * (value / maxValue));

			ctx.beginPath();
			ctx.arc(centerX, centerY, radius, startAngle, endAngle, false);
			ctx.lineWidth = 16;
			ctx.strokeStyle = strokeStyle;
			ctx.stroke();
		}

		drawArc(seconds, 60, radius, 'black');
		drawArc(minutes, 60, radius - 20, 'lightgrey');
		drawArc(
			is24HourFormat ? hours : hours % 12,
			is24HourFormat ? 24 : 12,
			radius - 40,
			'white'
		);
		drawArc(dayOfWeek, 7, radius - 60, '#fad803');
		drawArc(month, 12, radius - 80, '#d30a51');
	}

	function updateCircle() {
		const currentDate = new Date();
		const currentSeconds = currentDate.getSeconds();
		const currentMinutes = currentDate.getMinutes();
		const currentHours = currentDate.getHours();
		const currentDayOfWeek = getNumericWeekday(currentDate);
		const currentMonth = currentDate.getMonth() + 1; // Get current month (0-11)

		drawCircle(currentSeconds, currentMinutes, currentHours, currentDayOfWeek, currentMonth);
	}

	// TODO: Parameter für Wochenstart ergänzen
	function getNumericWeekday(date) {
		const weekday = date.getDay(); // 0 (Sunday) to 6 (Saturday)
		return (weekday === 0) ? 7 : weekday;
	}

	updateCircle();
	setInterval(updateCircle, 1000);
</script>
{% endblock %}