2020-12-19 18:26:36 +01:00
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<!DOCTYPE html>
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<html>
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<head>
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<meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1">
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<meta charset="utf-8">
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<meta name="theme-color" content="#222222">
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<title>WLED Live Preview</title>
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<style>
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body {
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margin: 0;
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}
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#canv {
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background: black;
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filter: brightness(175%);
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width: 100%;
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height: 100%;
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position: absolute;
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}
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</style>
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</head>
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<body>
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<div id="canv" />
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<script>
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function updatePreview(leds) {
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var str = "linear-gradient(90deg,";
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var len = leds.length;
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2022-02-01 12:02:04 +01:00
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for (i = 2; i < len; i+=3) {
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str += `rgb(${leds[i]},${leds[i+1]},${leds[i+2]})`;
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if (i < len -3) str += ","
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2020-12-19 18:26:36 +01:00
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}
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str += ")";
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document.getElementById("canv").style.background = str;
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}
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2022-02-01 12:02:04 +01:00
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function getLiveJson(e) {
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2020-12-19 18:26:36 +01:00
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try {
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2022-02-01 12:02:04 +01:00
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if (toString.call(e.data) === '[object ArrayBuffer]') {
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let leds = new Uint8Array(event.data);
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if (leds[0] != 76) return; //'L'
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updatePreview(leds);
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}
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2020-12-19 18:26:36 +01:00
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}
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catch (err) {
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2022-02-01 12:02:04 +01:00
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console.error("Peek WS error:",err);
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2021-07-08 02:01:17 +02:00
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}
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}
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var ws = top.window.ws;
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if (ws && ws.readyState === WebSocket.OPEN) {
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2022-02-01 12:02:04 +01:00
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console.info("Peek uses top WS");
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2021-07-08 02:01:17 +02:00
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ws.send("{'lv':true}");
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} else {
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2022-02-01 12:02:04 +01:00
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console.info("Peek WS opening");
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2021-07-08 02:01:17 +02:00
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ws = new WebSocket("ws://"+document.location.host+"/ws");
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ws.onopen = function () {
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2022-02-01 12:02:04 +01:00
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console.info("Peek WS open");
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2021-07-08 02:01:17 +02:00
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ws.send("{'lv':true}");
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}
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2020-12-19 18:26:36 +01:00
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}
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2022-02-01 12:02:04 +01:00
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ws.binaryType = "arraybuffer";
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2021-07-08 02:01:17 +02:00
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ws.addEventListener('message',getLiveJson);
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2020-12-19 18:26:36 +01:00
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</script>
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</body>
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</html>
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