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<html>
<head>
<script src="static/RGraph/libraries/RGraph.common.core.js" ></script>
<script src="static/RGraph/libraries/RGraph.common.effects.js" ></script>
<script src="static/RGraph/libraries/RGraph.led.js" ></script>
<script src="static/RGraph/libraries/RGraph.gauge.js" ></script>
<script src="static/RGraph/libraries/RGraph.line.js" ></script>
<style>
#led {
position: absolute;
left: 118px;
top: 95px;
z-index: 1;
}
#gauge1 {
position: absolute;
left: 5px;
}
#chart {
position: absolute;
left: 260px;
}
#chartHistory {
position: absolute;
top: 280px;
}
</style>
</head>
<body>
<canvas width=" 40px" height=" 20px" id="led"></canvas>
<canvas width="250px" height="250px" id="gauge1"></canvas>
<canvas width=" 0px" height="250px" id="chart"></canvas>
<canvas width=" 0px" height="250px" id="chartHistory"></canvas>
<script>
window.onload = function () {
document.getElementById("chart").width = window.innerWidth - document.getElementById("gauge1").width - 10;
document.getElementById("chartHistory").width = window.innerWidth - 10;
var data = {"value":null, ts:null};
var chart_data = [[]];
var GRAPH_MAX_POINTS = 1000;
var gauge1 = new RGraph.Gauge('gauge1', 20, 70);
gauge1.Set('chart.text.size', 8);
gauge1.Set('chart.units.post', 'dbA');
gauge1.Set('chart.green.color', 'lightGreen');
gauge1.Set('chart.yellow.color', 'yellow');
gauge1.Set('chart.red.color', 'red');
gauge1.Set('chart.green.end', 40);
gauge1.Set('chart.red.start', 60);
gauge1.Draw();
var led = new RGraph.LED('led', '00');
led.Set('chart.light', 'red');
led.Set('chart.zoom.background', false);
led.Set('chart.dark', 'rgba(0,0,0,0)');
led.Draw();
var graph = new RGraph.Line('chart', [])
graph.Set('chart.title.yaxis', 'dBA');
graph.Set('chart.title.yaxis.pos', 0.4);
graph.Set('chart.ylabels.count', 5);
graph.Set('chart.gutter.top', 5);
graph.Set('chart.gutter.bottom', 5);
graph.Set('chart.gutter.left', 60);
graph.Set('chart.gutter.right', 5);
graph.Set('chart.linewidth', [3,1]);
graph.Set('chart.colors', ["red", "black"]);
graph.Set('chart.ymin', 20);
graph.Set('chart.ymax', 70);
graph.Set('chart.xticks', 25);
chartHistory = new RGraph.Line('chartHistory', []);
chartHistory.Set('chart.title.yaxis', 'dBA');
chartHistory.Set('chart.title.yaxis.pos', 0.4);
chartHistory.Set('chart.ylabels.count', 5);
chartHistory.Set('chart.gutter.top', 5);
chartHistory.Set('chart.gutter.bottom', 50);
chartHistory.Set('chart.gutter.left', 60);
chartHistory.Set('chart.gutter.right', 5);
chartHistory.Set('chart.linewidth', [1]);
chartHistory.Set('chart.colors', ["black"]);
chartHistory.Set('chart.ymin', 20);
chartHistory.Set('chart.ymax', 70);
function json(path, func) {
var req = new XMLHttpRequest();
req.open("GET", path, true);
req.onreadystatechange = function() {
if (req.readyState == 4)
func( JSON.parse( req.responseText) );
};
req.send();
}
function startRefreshData() {
var req_start = new Date().getTime();
json("now", function(_data) {
var req_end = new Date().getTime()
var d = req_end - req_start;
data = _data;
window.setTimeout(startRefreshData, 500 - d);
});
}
function startRefreshChartHistory() {
var d = ( 1000 * 60 * 60 * 24 * 4 );
var now = new Date().getTime();
var from = now - d;
var count = 1200;
var interval = d / count;
json("range/" + from + "/" + now + "/" + count, function (data) {
var labels = [];
var j = from + interval;
for (var i in data) {
var label = null;
var thisDate = new Date(from + i*interval);
if ( (from + i*interval) > j + 1000*60*60*6) {
j = from + i*interval;
label = ("" + (thisDate.getHours()<10?"0":"") + thisDate.getHours() +
":" + ( thisDate.getMinutes() < 10 ? "0" : "") + thisDate.getMinutes());
}
labels.push(label);
}
chartHistory.Set("chart.labels", labels.reverse());
chartHistory.Set('chart.xticks', d / (1000*60*60*6));
chartHistory.Set('chart.background.grid.autofit.numvlines', d/ (1000*60*60*6));
RGraph.Clear(chartHistory.canvas);
chartHistory.original_data = [ data ];
chartHistory.Draw()
window.setTimeout( startRefreshChartHistory, 60 * 1000);
});
}
function redrawChart() {
// Gauge
gauge1.value = data['value'];
gauge1.Draw();
// LED
led.text = '' + Math.round(data['value']);
led.Draw()
// Line Chart
chart_data.unshift(data['value']);
while (chart_data.length > GRAPH_MAX_POINTS) {
chart_data.pop();
}
RGraph.Clear(graph.canvas);
graph.original_data = [ chart_data ];
graph.Draw();
}
json("range/" + (new Date().getTime() - (500 * 1500)), function (data) {
chart_data = data;
startRefreshData();
startRefreshChartHistory();
window.setInterval(redrawChart, 500);
});
}
</script>
</body>
</html>
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