32b104e1a9
* use sequential loading for all UI resources - load common.js and style.css sequentially for all config pages - restrict all requrests in index.js to single connection - retry more than once if requests fail - incremental timeouts to make them faster and still more robust - bugfix in connectWs() - on page load, presets are loaded from localStorage if controller was not rebooted - remove hiding of segment freeze button when not collapsed
74 lines
2.2 KiB
HTML
74 lines
2.2 KiB
HTML
<!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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</style>
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</head>
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<body>
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<canvas id="canv"></canvas>
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<script>
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// load common.js with retry on error
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(function common() {
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const l = document.createElement('script');
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l.src = 'common.js';
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l.onload = () => S();
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l.onerror = () => setTimeout(common, 100);
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document.head.appendChild(l);
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})();
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var c = document.getElementById('canv');
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var leds = "";
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var throttled = false;
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function setCanvas() {
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c.width = window.innerWidth * 0.98; //remove scroll bars
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c.height = window.innerHeight * 0.98; //remove scroll bars
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}
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function S() { // Startup function (onload)
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setCanvas();
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// Check for canvas support
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var ctx = c.getContext('2d');
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if (ctx) { // Access the rendering context
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ws = connectWs(ws => ws.send('{"lv":true}')); // use parent WS or open new
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ws.addEventListener('message',(e)=>{
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try {
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if (toString.call(e.data) === '[object ArrayBuffer]') {
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let leds = new Uint8Array(e.data);
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if (leds[0] != 76 || leds[1] != 2 || !ctx) return; //'L', set in ws.cpp
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let mW = leds[2]; // matrix width
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let mH = leds[3]; // matrix height
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let pPL = Math.min(c.width / mW, c.height / mH); // pixels per LED (width of circle)
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let lOf = Math.floor((c.width - pPL*mW)/2); //left offset (to center matrix)
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var i = 4;
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for (y=0.5;y<mH;y++) for (x=0.5; x<mW; x++) {
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ctx.fillStyle = `rgb(${leds[i]},${leds[i+1]},${leds[i+2]})`;
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ctx.beginPath();
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ctx.arc(x*pPL+lOf, y*pPL, pPL*0.4, 0, 2 * Math.PI);
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ctx.fill();
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i+=3;
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}
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}
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} catch (err) {
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console.error("Peek WS error:",err);
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}
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});
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}
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}
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// window.resize event listener
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window.addEventListener('resize', (e)=>{
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if (!throttled) { // only run if we're not throttled
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setCanvas(); // actual callback action
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throttled = true; // we're throttled!
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setTimeout(()=>{ // set a timeout to un-throttle
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throttled = false;
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}, 250);
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}
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});
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</script>
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</body>
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</html> |