window.CoolClock = function(canvasId,displayRadius,skinId,showSecondHand,gmtOffset) {
return this.init(canvasId,displayRadius,skinId,showSecondHand,gmtOffset);
}
CoolClock.findAndCreateClocks = function() {
var canvases = document.getElementsByTagName("canvas");
for (var i=0;i<canvases.length;i++) {
var fields = canvases[i].className.split(" ")[0].split(":");
if (fields[0] == "CoolClock") {
new CoolClock(canvases[i].id,fields[2],fields[1],fields[3]!="noSeconds",fields[4]);
}
}
}
CoolClock.addLoadEvent = function(func){
if (window.addEvent) {
window.addEvent('load', function() {
func();
});
} else {
var oldonload = window.onload;
if (typeof window.onload != 'function')
window.onload = func;
else
window.onload = function() {
oldonload();
func();
}
}
}
CoolClock.config = {
clockTracker: {},
tickDelay: 1000,
longTickDelay: 15000,
defaultRadius: 85,
renderRadius: 100,
defaultSkin: "swissRail",
skins: {
swissRail: {
outerBorder: { lineWidth: 1, radius:95, color: "black", alpha: 1 },
smallIndicator: { lineWidth: 2, startAt: 89, endAt: 93, color: "black", alpha: 1 },
largeIndicator: { lineWidth: 4, startAt: 80, endAt: 93, color: "black", alpha: 1 },
hourHand: { lineWidth: 8, startAt: -15, endAt: 50, color: "black", alpha: 1 },
minuteHand: { lineWidth: 7, startAt: -15, endAt: 75, color: "black", alpha: 1 },
secondHand: { lineWidth: 1, startAt: -20, endAt: 85, color: "red", alpha: 1 },
secondDecoration: { lineWidth: 1, startAt: 70, radius: 4, fillColor: "red", color: "red", alpha: 1 }
},
chunkySwiss: {
outerBorder: { lineWidth: 4, radius:97, color: "black", alpha: 1 },
smallIndicator: { lineWidth: 4, startAt: 89, endAt: 93, color: "black", alpha: 1 },
largeIndicator: { lineWidth: 8, startAt: 80, endAt: 93, color: "black", alpha: 1 },
hourHand: { lineWidth: 12, startAt: -15, endAt: 60, color: "black", alpha: 1 },
minuteHand: { lineWidth: 10, startAt: -15, endAt: 85, color: "black", alpha: 1 },
secondHand: { lineWidth: 4, startAt: -20, endAt: 85, color: "red", alpha: 1 },
secondDecoration: { lineWidth: 2, startAt: 70, radius: 8, fillColor: "red", color: "red", alpha: 1 }
},
chunkySwissOnBlack: {
outerBorder: { lineWidth: 4, radius:97, color: "white", alpha: 1 },
smallIndicator: { lineWidth: 4, startAt: 89, endAt: 93, color: "white", alpha: 1 },
largeIndicator: { lineWidth: 8, startAt: 80, endAt: 93, color: "white", alpha: 1 },
hourHand: { lineWidth: 12, startAt: -15, endAt: 60, color: "white", alpha: 1 },
minuteHand: { lineWidth: 10, startAt: -15, endAt: 85, color: "white", alpha: 1 },
secondHand: { lineWidth: 4, startAt: -20, endAt: 85, color: "red", alpha: 1 },
secondDecoration: { lineWidth: 2, startAt: 70, radius: 8, fillColor: "red", color: "red", alpha: 1 }
}
}
};
CoolClock.prototype = {
init: function(canvasId,displayRadius,skinId,showSecondHand,gmtOffset) {
this.canvasId = canvasId;
this.displayRadius = displayRadius || CoolClock.config.defaultRadius;
this.skinId = skinId || CoolClock.config.defaultSkin;
this.showSecondHand = typeof showSecondHand == "boolean" ? showSecondHand : true;
this.tickDelay = CoolClock.config[ this.showSecondHand ? "tickDelay" : "longTickDelay"];
this.canvas = document.getElementById(canvasId);
this.canvas.setAttribute("width",this.displayRadius*2);
this.canvas.setAttribute("height",this.displayRadius*2);
this.canvas.style.width = this.displayRadius*2 + "px";
this.canvas.style.height = this.displayRadius*2 + "px";
this.renderRadius = CoolClock.config.renderRadius;
this.scale = this.displayRadius / this.renderRadius;
this.ctx = this.canvas.getContext("2d");
this.ctx.scale(this.scale,this.scale);
this.gmtOffset = gmtOffset != null ? parseFloat(gmtOffset) : gmtOffset;
CoolClock.config.clockTracker[canvasId] = this;
this.tick();
return this;
},
fullCircle: function(skin) {
this.fullCircleAt(this.renderRadius,this.renderRadius,skin);
},
fullCircleAt: function(x,y,skin) {
with (this.ctx) {
save();
globalAlpha = skin.alpha;
lineWidth = skin.lineWidth;
//if (!document.all)
beginPath();
if (document.all)
lineWidth = lineWidth * this.scale;
arc(x, y, skin.radius, 0, 2*Math.PI, false);
if (document.all)
arc(x, y, skin.radius, -0.1, 0.1, false);
if (skin.fillColor) {
fillStyle = skin.fillColor
fill();
}
else {
strokeStyle = skin.color;
//if (!document.all) {
stroke();
//}
}
restore();
}
},
radialLineAtAngle: function(angleFraction,skin) {
with (this.ctx) {
save();
translate(this.renderRadius,this.renderRadius);
rotate(Math.PI * (2 * angleFraction - 0.5));
globalAlpha = skin.alpha;
strokeStyle = skin.color;
lineWidth = skin.lineWidth;
if (document.all)
lineWidth = lineWidth * this.scale;
if (skin.radius) {
this.fullCircleAt(skin.startAt,0,skin)
}
else {
beginPath();
moveTo(skin.startAt,0)
lineTo(skin.endAt,0);
stroke();
}
restore();
}
},
render: function(hour,min,sec) {
var skin = CoolClock.config.skins[this.skinId];
this.ctx.clearRect(0,0,this.renderRadius*2,this.renderRadius*2);
this.fullCircle(skin.outerBorder);
for (var i=0;i<60;i++)
this.radialLineAtAngle(i/60,skin[ i%5 ? "smallIndicator" : "largeIndicator"]);
this.radialLineAtAngle((hour+min/60)/12,skin.hourHand);
this.radialLineAtAngle((min+sec/60)/60,skin.minuteHand);
if (this.showSecondHand) {
this.radialLineAtAngle(sec/60,skin.secondHand);
if (!document.all)
this.radialLineAtAngle(sec/60,skin.secondDecoration);
}
},
nextTick: function() {
setTimeout("CoolClock.config.clockTracker['"+this.canvasId+"'].tick()",this.tickDelay);
},
stillHere: function() {
return document.getElementById(this.canvasId) != null;
},
refreshDisplay: function() {
var now = new Date();
if (this.gmtOffset != null) {
var offsetNow = new Date(now.valueOf() + (this.gmtOffset * 1000 * 60 * 60));
this.render(offsetNow.getUTCHours(),offsetNow.getUTCMinutes(),offsetNow.getUTCSeconds());
}
else {
this.render(now.getHours(),now.getMinutes(),now.getSeconds());
}
},
tick: function() {
if (this.stillHere()) {
this.refreshDisplay()
this.nextTick();
}
}
}
CoolClock.addLoadEvent(CoolClock.findAndCreateClocks);