moth/www/scoreboard.js

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JavaScript
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function dbg(o) {
e = document.getElementById("debug");
e.innerHTML = o;
}
function torgba(color, alpha) {
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if (color.substring(0, 1) == "#") {
var r = parseInt(color.substring(1,3), 16);
var g = parseInt(color.substring(3,5), 16);
var b = parseInt(color.substring(5,7), 16);
return "rgba(" + r + "," + g + "," + b + "," + alpha + ")";
} else {
return color;
}
}
function Chart(id, width, height, lines) {
var canvas = document.getElementById(id);
var ctx = canvas.getContext('2d');
// We'll let the canvas do all the tricksy math
var xscale = canvas.width/width;
var yscale = canvas.height/height;
var nlines = lines.length;
function moveTo(x, y) {
ctx.moveTo(Math.round(x * xscale), Math.round((height - y) * yscale));
}
function lineTo(x, y) {
ctx.lineTo(Math.round(x * xscale), Math.round((height - y) * yscale));
}
function draw(color, values) {
var lasty = 0;
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ctx.strokeStyle = color;
ctx.lineWidth = 4;
ctx.beginPath();
moveTo(values[0][0], 0);
for (i in values) {
var x = values[i][0];
var y = values[i][1];
lineTo(x, lasty);
lineTo(x, y);
lasty = y;
}
lineTo(width, lasty);
ctx.stroke();
}
this.highlight = function(id, color) {
var line = lines[id];
if (! color) color = line[0];
draw(color, line[1]);
}
for (id in lines) {
var line = lines[id];
draw(line[0], line[1]);
}
}
var thechart;
function plot(id, width, height, lines) {
thechart = new Chart(id, width, height, lines);
}
function getElementsByClass( searchClass, domNode, tagName) {
if (domNode == null) domNode = document;
if (tagName == null) tagName = '*';
var el = new Array();
var tags = domNode.getElementsByTagName(tagName);
var tcl = " "+searchClass+" ";
for(i=0,j=0; i<tags.length; i++) {
var test = " " + tags[i].className + " ";
if (test.indexOf(tcl) != -1)
el[j++] = tags[i];
}
return el;
}
function highlight(cls, color) {
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if (! color) color = "#ffffff";
elements = getElementsByClass("t" + cls);
for (i in elements) {
e = elements[i];
e.style.borderColor = e.style.backgroundColor;
e.style.backgroundColor = color;
}
thechart.highlight(cls, color);
}
function restore(cls) {
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elements = getElementsByClass("t" + cls);
for (i in elements) {
e = elements[i];
e.style.backgroundColor = e.style.borderColor;
}
thechart.highlight(cls);
}
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var state = 0;
function cycle() {
if (state == 0) {
v = document.getElementById("scoreboard");
i = document.getElementById("chart");
} else {
v = document.getElementById("chart");
i = document.getElementById("scoreboard");
}
v.style.display = "block";
i.style.display = "none";
state = (state + 1) % 2;
}