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Animated favicon timer #61

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Animated favicon timer #61

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fe73f96
Replace favicon with an animated semicircle of the remaing portion of…
May 23, 2025
d544077
Replace favicon with an animated semicircle of the remaing portion of…
May 23, 2025
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35 changes: 35 additions & 0 deletions src/main/resources/templates/room.html
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Original file line number Diff line number Diff line change
Expand Up @@ -210,6 +210,7 @@ <h5>Integration with the mob tool</h5>

</main>

<canvas id="favicon-canvas" width="64" height="64" hidden></canvas>
<footer th:replace="~{fragments/footer}"></footer>

<div th:replace="~{fragments/github-corner}"></div>
Expand Down Expand Up @@ -390,10 +391,44 @@ <h5>Integration with the mob tool</h5>
}
}

let faviconLink = document.querySelector("link[rel='icon']");
let faviconUri = faviconLink.getAttribute('href');
let faviconCanvas = document.getElementById('favicon-canvas');
let faviconCanvasContext = faviconCanvas.getContext('2d');
let faviconSize = Math.min(faviconCanvas.width, faviconCanvas.height);
function renderTimerFavicon() {
if (!faviconCanvasContext || !requestedTimestamp || !timerDurationInMilliseconds || !faviconLink) {
return;
}

let elapsedMillisecondsSinceRequested = Date.now() - requestedTimestamp;
if (elapsedMillisecondsSinceRequested < timerDurationInMilliseconds) {
let elapsedTimerFraction = Math.max(0.05, elapsedMillisecondsSinceRequested / timerDurationInMilliseconds);
let startAngle = -Math.PI / 2;

faviconCanvasContext.clearRect(0, 0, faviconSize, faviconSize);
faviconCanvasContext.fillStyle = requestType === 'BREAKTIMER' ? 'red' : 'green';
faviconCanvasContext.beginPath();
faviconCanvasContext.moveTo(faviconSize / 2, faviconSize / 2);
faviconCanvasContext.arc(faviconSize / 2,
faviconSize / 2,
faviconSize / 2,
startAngle,
startAngle + (2 * Math.PI * elapsedTimerFraction));
faviconCanvasContext.lineTo(faviconSize / 2, faviconSize / 2);
faviconCanvasContext.fill();

faviconLink.href = faviconCanvas.toDataURL('image/png');
} else {
faviconLink.href = faviconUri;
}
}

// loop
function timer() {
setTimeout(function () {
renderTimer();
renderTimerFavicon();
timer();
}, 50);
}
Expand Down