2011-11-09 19:10:47 -07:00
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<!DOCTYPE html>
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<!-- Presentation Timer 2011 Neale Pickett -->
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<!-- Placed in the public domain. -->
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2011-12-23 01:10:04 -07:00
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<!-- Time-stamp: "2011-11-09 21:33:34 neale" -->
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2011-11-09 19:10:47 -07:00
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<html>
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<head>
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<title>Presentation Timer</title>
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<meta charset="utf-8">
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<style>
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#timer {
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font-size: 10em;
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text-align: center;
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margin: 0.1em;
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}
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#tools {
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text-align: center;
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}
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</style>
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<script type="text/javascript">
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function pad(i) {
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if (i < 10) {
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return "0" + i;
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} else {
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return i;
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}
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}
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// Start a timer on [element] for [duration] milliseconds.
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// When there are [g] milliseconds left, turn the background green.
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// When there are [y] milliseconds left, turn the background yellow.
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function startTimer(element, duration, g, y) {
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var beginning;
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var itimer;
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function display(remain) {
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var min = Math.floor(Math.abs(remain / 60000));
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var sec = Math.abs(Math.floor(remain / 1000)) % 60;
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if (itimer) {
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element.style.color = "inherit";
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} else {
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element.style.color = "#888";
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}
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if (remain < 0) {
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element.style.backgroundColor = "#f24";
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} else if (remain < y) {
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element.style.backgroundColor = "#ff0";
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} else if (remain < g) {
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element.style.backgroundColor = "#0f0";
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} else {
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element.style.backgroundColor = "inherit";
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}
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element.innerHTML = "";
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if (remain < 0) {
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element.innerHTML += "-";
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}
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element.innerHTML += min + ":" + pad(sec);
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}
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function update() {
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var now = (new Date()).getTime();
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var remain = beginning + duration - now;
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display(remain);
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}
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// Stop (clear timer)
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this.stop = function () {
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clearInterval(itimer);
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itimer = undefined;
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}
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// Pause/play toggle
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this.toggle = function () {
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var now = (new Date()).getTime();
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if (itimer) {
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this.stop();
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duration -= now - beginning;
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} else {
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beginning = now;
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itimer = setInterval(update, 33);
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}
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display(duration);
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}
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if (duration > 120000) { // Over 2m?
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g = g?g:120000; // Green @ 2m
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y = y?y:60000; // Yellow @ 1m
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} else {
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g = g?g:60000; // Green @ 1m
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y = y?y:30000; // Yellow @ 30s
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}
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display(duration);
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}
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function clicked(id) {
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var e = document.getElementById(id);
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var t = document.getElementById(id + " time");
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if (! e.timer) {
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setTime(id);
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}
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e.timer.toggle();
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}
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function setTime(id) {
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var e = document.getElementById(id);
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var t = document.getElementById(id + " time").value.split(':');
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var sec = 0;
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if (e.timer) {
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e.timer.stop();
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}
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if (t.length > 3) {
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e.innerHTML = "What?";
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return;
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}
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for (var i in t) {
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var v = t[i];
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sec = (sec * 60) + Number(v);
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}
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e.timer = new startTimer(e, sec * 1000);
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}
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</script>
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</head>
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<body>
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<p id="timer" onclick="clicked('timer');">--:--</p>
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<p id="tools">
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<input id="timer time" type="time" size="6" value="5:00" onchange="setTime('timer');">
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<input type="button" value="Set" onclick="setTime('timer');">
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<input type="button" value="❚❚ ▶" onclick="clicked('timer');">
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</p>
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</body>
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</html>
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