<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>clock.js Example File | Qt Script</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.12</td><td ><a href="qtscript-index.html">Qt Script</a></td><td ><a href="qtscript-script-context2d-example.html">Context2D Example</a></td><td >clock.js Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtscript-index.html">Qt 5.12.6 Reference Documentation</a></td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">clock.js Example File</h1> <span class="subtitle">script/context2d/scripts/clock.js</span> <!-- $$$script/context2d/scripts/clock.js-description --> <div class="descr"> <a name="details"></a> <pre class="js"> function init(){ clock(); setInterval('clock()',1000); } function clock(){ var now = new Date(); var ctx = document.getElementById('tutorial').getContext('2d'); ctx.save(); ctx.clearRect(0,0,150,150); ctx.translate(75,75); ctx.scale(0.4,0.4); ctx.rotate(-Math.PI/2); ctx.strokeStyle = "black"; ctx.fillStyle = "white"; ctx.lineWidth = 8; ctx.lineCap = "round"; // Hour marks ctx.save(); ctx.beginPath(); for (i=0;i<12;i++){ ctx.rotate(Math.PI/6); ctx.moveTo(100,0); ctx.lineTo(120,0); } ctx.stroke(); ctx.restore(); // Minute marks ctx.save(); ctx.lineWidth = 5; ctx.beginPath(); for (i=0;i<60;i++){ if (i%5!=0) { ctx.moveTo(117,0); ctx.lineTo(120,0); } ctx.rotate(Math.PI/30); } ctx.stroke(); ctx.restore(); var sec = now.getSeconds(); var min = now.getMinutes(); var hr = now.getHours(); hr = hr>=12 ? hr-12 : hr; ctx.fillStyle = "black"; // write Hours ctx.save(); ctx.rotate( hr*(Math.PI/6) + (Math.PI/360)*min + (Math.PI/21600)*sec ) ctx.lineWidth = 14; ctx.beginPath(); ctx.moveTo(-20,0); ctx.lineTo(80,0); ctx.stroke(); ctx.restore(); // write Minutes ctx.save(); ctx.rotate( (Math.PI/30)*min + (Math.PI/1800)*sec ) ctx.lineWidth = 10; ctx.beginPath(); ctx.moveTo(-28,0); ctx.lineTo(112,0); ctx.stroke(); ctx.restore(); // Write seconds ctx.save(); ctx.rotate(sec * Math.PI/30); ctx.strokeStyle = "#D40000"; ctx.fillStyle = "#D40000"; ctx.lineWidth = 6; ctx.beginPath(); ctx.moveTo(-30,0); ctx.lineTo(83,0); ctx.stroke(); ctx.beginPath(); ctx.arc(0,0,10,0,Math.PI*2,true); ctx.fill(); ctx.beginPath(); ctx.arc(95,0,10,0,Math.PI*2,true); ctx.stroke(); ctx.fillStyle = "#555"; ctx.arc(0,0,3,0,Math.PI*2,true); ctx.fill(); ctx.restore(); ctx.beginPath(); ctx.lineWidth = 14; ctx.strokeStyle = '#325FA2'; ctx.arc(0,0,142,0,Math.PI*2,true); ctx.stroke(); ctx.restore(); } init(); </pre> </div> <!-- @@@script/context2d/scripts/clock.js --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br/> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br/> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>