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Team:Calgary/VGSandbox
From 2012.igem.org
<style>
- { margin: 0;}
body { font-family: helvetica; padding: 10px; } input { width: 50px; } /*video, canvas { display: block; }*/ p { margin-top: 20px;} </style> </head> <body>
<video height="360" width="480"> <source src="assets/dizzy.mp4" /> <source src="assets/dizzy.ogv" /> </video><canvas></canvas>
<input type="button" id="play" value="play"> 00:00 /
<script src="/js/h5utils.js"></script> <script> var video = document.querySelector('video'); var togglePlay = document.querySelector('#play'); var position = document.querySelector('#position'); var canvas = document.querySelector('canvas'); var ctx = canvas.getContext('2d');
addEvent(togglePlay, 'click', function () {
video.playbackRate = 0.5;
if (video.paused) {
if (video.ended) video.currentTime = 0;
video.play();
this.value = "pause";
} else {
video.pause();
this.value = "play";
}
});
setInterval(function () {
position.innerHTML = asTime(video.currentTime);
// ctx.restore(); ctx.drawImage(video, 0, 0, video.width, video.height, 0, 0, canvas.width, canvas.height);
}, 1000 / 15);
addEvent(video, 'ended', function () {
togglePlay.value = "play";
});
addEvent(video, 'canplay', function () {
video.muted = true;
document.querySelector('#duration').innerHTML = asTime(this.duration);
startCanvas();
});
function startCanvas() {
canvas.setAttribute('height', Math.floor(video.height));
canvas.setAttribute('width', Math.floor(video.width));
ctx.translate(canvas.width/2, canvas.height/2);
ctx.scale(-1, 1);
ctx.translate(-canvas.width/2, -canvas.height/2);
ctx.drawImage(video, 0, 0, video.width, video.height, 0, 0, canvas.width, canvas.height);
// var mirror = canvas.height * 0.6; // var grad = ctx.createLinearGradient(0, 0, 0, mirror); // grad.addColorStop(0, 'rgba(0, 0, 0, 0.5)'); // grad.addColorStop(1, 'rgba(0, 0, 0, 1)'); // ctx.fillStyle = grad; // ctx.rect(0, 0, canvas.width, mirror); // ctx.fill(); // ctx.save();
}
function asTime(t) {
t = Math.round(t); var s = t % 60; var m = Math.round(t / 60); return two(m) + ':' + two(s);
}
function two(s) {
s += ""; if (s.length < 2) s = "0" + s; return s;
} </script> </body>
