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/** |
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* CoolClock 3.0.0-pre |
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* Global Tick branch with https://github.com/henrahmagix/CoolClock/commit/00d48a01b1aeadbeb0b7d167aca892de78659b76 applied |
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* |
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Copyright (c) 2010-2013, Simon Baird. |
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All rights reserved. |
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* |
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Redistribution and use in source and binary forms, with or without |
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modification, are permitted provided that the following conditions are met: |
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- Redistributions of source code must retain the above copyright notice, |
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this list of conditions and the following disclaimer. |
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- Redistributions in binary form must reproduce the above copyright notice, |
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this list of conditions and the following disclaimer in the documentation |
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and/or other materials provided with the distribution. |
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- Neither the name Simon Baird nor the names of other contributors may be |
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used to endorse or promote products derived from this software without |
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specific prior written permission. |
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* |
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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ARE DISCLAIMED. IN NO EVENT SHALL SIMON BAIRD BE LIABLE FOR ANY DIRECT, |
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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* Display an analog clock using canvas. |
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* http://randomibis.com/coolclock/ |
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* |
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*/ |
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|
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// Constructor for CoolClock objects |
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window.CoolClock = function(options) { |
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return this.init(options); |
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} |
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|
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// Config contains some defaults, and clock skins |
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CoolClock.config = { |
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tickDelay: 1000, |
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longTickDelay: 15000, |
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defaultRadius: 85, |
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renderRadius: 100, |
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defaultSkin: "chunkySwiss", |
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defaultFont: "15px sans-serif", |
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|
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skins: { |
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// There are more skins in moreskins.js |
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// Try making your own skin by copy/pasting one of these and tweaking it |
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swissRail: { |
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outerBorder: { lineWidth: 2, radius:95, color: "black", alpha: 1 }, |
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smallIndicator: { lineWidth: 2, startAt: 88, endAt: 92, color: "black", alpha: 1 }, |
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largeIndicator: { lineWidth: 4, startAt: 79, endAt: 92, color: "black", alpha: 1 }, |
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hourHand: { lineWidth: 8, startAt: -15, endAt: 50, color: "black", alpha: 1 }, |
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minuteHand: { lineWidth: 7, startAt: -15, endAt: 75, color: "black", alpha: 1 }, |
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secondHand: { lineWidth: 1, startAt: -20, endAt: 85, color: "red", alpha: 1 }, |
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secondDecoration: { lineWidth: 1, startAt: 70, radius: 4, fillColor: "red", color: "red", alpha: 1 } |
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}, |
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chunkySwiss: { |
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outerBorder: { lineWidth: 4, radius:97, color: "black", alpha: 1 }, |
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smallIndicator: { lineWidth: 4, startAt: 89, endAt: 93, color: "black", alpha: 1 }, |
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largeIndicator: { lineWidth: 8, startAt: 80, endAt: 93, color: "black", alpha: 1 }, |
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hourHand: { lineWidth: 12, startAt: -15, endAt: 60, color: "black", alpha: 1 }, |
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minuteHand: { lineWidth: 10, startAt: -15, endAt: 85, color: "black", alpha: 1 }, |
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secondHand: { lineWidth: 4, startAt: -20, endAt: 85, color: "red", alpha: 1 }, |
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secondDecoration: { lineWidth: 2, startAt: 70, radius: 8, fillColor: "red", color: "red", alpha: 1 } |
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}, |
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chunkySwissOnBlack: { |
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outerBorder: { lineWidth: 4, radius:97, color: "white", alpha: 1 }, |
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smallIndicator: { lineWidth: 4, startAt: 89, endAt: 93, color: "white", alpha: 1 }, |
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largeIndicator: { lineWidth: 8, startAt: 80, endAt: 93, color: "white", alpha: 1 }, |
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hourHand: { lineWidth: 12, startAt: -15, endAt: 60, color: "white", alpha: 1 }, |
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minuteHand: { lineWidth: 10, startAt: -15, endAt: 85, color: "white", alpha: 1 }, |
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secondHand: { lineWidth: 4, startAt: -20, endAt: 85, color: "red", alpha: 1 }, |
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secondDecoration: { lineWidth: 2, startAt: 70, radius: 8, fillColor: "red", color: "red", alpha: 1 } |
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} |
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|
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}, |
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|
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// Test for IE so we can nurse excanvas in a couple of places |
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isIE: !!document.all, |
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|
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// Will store (a reference to) each clock here, indexed by the id of the canvas element |
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clockTracker: {}, |
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|
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// For giving a unique id to coolclock canvases with no id |
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noIdCount: 0 |
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} |
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|
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// Main tick handler. Refresh all the clocks then setup the next tick |
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CoolClock.tick = function() { |
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|
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for (var clockId in CoolClock.config.clockTracker) { |
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var clock = CoolClock.config.clockTracker[clockId]; |
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if (clock.stillHere() && clock.active) { |
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clock.refreshDisplay() |
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} |
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} |
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this.tickTimeout = setTimeout(CoolClock.tick, CoolClock.config.tickDelay); |
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}; |
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|
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// Define the CoolClock object's methods |
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CoolClock.prototype = { |
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|
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// Initialise using the parameters parsed from the colon delimited class |
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init: function(options) { |
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// Parse and store the options |
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this.canvasId = options.canvasId; |
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this.skinId = options.skinId || CoolClock.config.defaultSkin; |
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this.font = options.font || CoolClock.config.defaultFont; |
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this.displayRadius = options.displayRadius || CoolClock.config.defaultRadius; |
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this.renderRadius = options.renderRadius || CoolClock.config.renderRadius; |
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this.showSecondHand = typeof options.showSecondHand == "boolean" ? options.showSecondHand : true; |
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this.gmtOffset = (options.gmtOffset != null && options.gmtOffset != '') ? parseFloat(options.gmtOffset) : null; |
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this.showDigital = typeof options.showDigital == "boolean" ? options.showDigital : false; |
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this.showDigital24 = typeof options.showDigital24 == "boolean" ? options.showDigital24 : false; |
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this.showDate = typeof options.showDate == "boolean" ? options.showDate : false; |
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this.logClock = typeof options.logClock == "boolean" ? options.logClock : false; |
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this.logClockRev = typeof options.logClock == "boolean" ? options.logClockRev : false; |
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|
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this.tickDelay = CoolClock.config[ this.showSecondHand ? "tickDelay" : "longTickDelay" ]; |
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|
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// Get the canvas element |
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this.canvas = document.getElementById(this.canvasId); |
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|
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// Make the canvas the requested size. It's always square. |
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this.canvas.setAttribute("width",this.displayRadius*2); |
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this.canvas.setAttribute("height",this.displayRadius*2); |
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this.canvas.style.width = this.displayRadius*2 + "px"; |
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this.canvas.style.height = this.displayRadius*2 + "px"; |
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|
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// Determine by what factor to relate skin values to canvas positions. |
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// renderRadius is the max skin positional value before leaving the |
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// canvas. displayRadius is half the width and height of the canvas in |
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// pixels. If they are equal, there is a 1:1 relation of skin position |
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// values to canvas pixels. Setting both to 200 allows 100px of space |
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// around clock skins to add your own things: this is due to current |
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// skins maxing out at a positional value of 100. |
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this.scale = this.displayRadius / this.renderRadius; |
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|
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// Initialise canvas context |
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this.ctx = this.canvas.getContext("2d"); |
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this.ctx.scale(this.scale,this.scale); |
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|
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// Keep track of this object |
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CoolClock.config.clockTracker[this.canvasId] = this; |
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|
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// Start the clock going |
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this.start(); |
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|
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return this; |
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}, |
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|
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// Draw a circle at point x,y with params as defined in skin |
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fullCircleAt: function(x,y,skin) { |
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this.ctx.save(); |
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this.ctx.globalAlpha = skin.alpha; |
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this.ctx.lineWidth = skin.lineWidth; |
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|
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if (CoolClock.config.isIE) { |
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// excanvas doesn't scale line width so we will do it here |
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this.ctx.lineWidth = this.ctx.lineWidth * this.scale; |
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} |
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|
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this.ctx.beginPath(); |
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this.ctx.arc(x, y, skin.radius, 0, 2*Math.PI, false); |
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|
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if (CoolClock.config.isIE) { |
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// excanvas doesn't close the circle so let's fill in the tiny gap |
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this.ctx.arc(x, y, skin.radius, -0.1, 0.1, false); |
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} |
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|
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if (skin.fillColor) { |
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this.ctx.fillStyle = skin.fillColor |
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this.ctx.fill(); |
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} |
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if (skin.color) { |
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this.ctx.strokeStyle = skin.color; |
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this.ctx.stroke(); |
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} |
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this.ctx.restore(); |
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}, |
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|
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// Draw some text centered vertically and horizontally |
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drawTextAt: function(theText,x,y,skin) { |
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if (!skin) skin = this.getSkin(); |
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this.ctx.save(); |
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this.ctx.font = skin.font || this.font; |
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var tSize = this.ctx.measureText(theText); |
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// TextMetrics rarely returns a height property: use baseline instead. |
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if (!tSize.height) { |
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tSize.height = 0; |
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this.ctx.textBaseline = 'middle'; |
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} |
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this.ctx.fillText(theText, x - tSize.width/2, y - tSize.height/2); |
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this.ctx.restore(); |
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}, |
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|
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lpad2: function(num) { |
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return (num < 10 ? '0' : '') + num; |
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}, |
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|
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tickAngle: function(second) { |
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// Log algorithm by David Bradshaw |
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var tweak = 3; // If it's lower the one second mark looks wrong (?) |
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if (this.logClock) { |
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return second == 0 ? 0 : (Math.log(second*tweak) / Math.log(60*tweak)); |
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} |
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else if (this.logClockRev) { |
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// Flip the seconds then flip the angle (trickiness) |
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second = (60 - second) % 60; |
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return 1.0 - (second == 0 ? 0 : (Math.log(second*tweak) / Math.log(60*tweak))); |
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} |
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else { |
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return second/60.0; |
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} |
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}, |
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|
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timeText: function(hour,min,sec,showAmPm,showSecs) { |
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return '' + |
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(showAmPm ? ((hour%12)==0 ? 12 : (hour%12)) : hour) + ':' + |
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this.lpad2(min) + |
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(showSecs ? ':' + this.lpad2(sec) : '') + |
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(showAmPm ? (hour < 12 ? ' am' : ' pm') : '') |
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; |
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}, |
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|
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// Draw a radial line by rotating then drawing a straight line |
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// Ha ha, I think I've accidentally used Taus, (see http://tauday.com/) |
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radialLineAtAngle: function(angleFraction,skin) { |
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this.ctx.save(); |
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this.ctx.translate(this.renderRadius,this.renderRadius); |
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this.ctx.rotate(Math.PI * (2.0 * angleFraction - 0.5)); |
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this.ctx.globalAlpha = skin.alpha; |
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this.ctx.strokeStyle = skin.color; |
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this.ctx.lineWidth = skin.lineWidth; |
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|
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if (CoolClock.config.isIE) |
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// excanvas doesn't scale line width so we will do it here |
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this.ctx.lineWidth = this.ctx.lineWidth * this.scale; |
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|
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if (skin.radius) { |
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this.fullCircleAt(skin.startAt,0,skin) |
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} |
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else { |
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this.ctx.beginPath(); |
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this.ctx.moveTo(skin.startAt,0) |
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this.ctx.lineTo(skin.endAt,0); |
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this.ctx.stroke(); |
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} |
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this.ctx.restore(); |
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}, |
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|
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render: function(hour,min,sec,date) { |
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// Get the skin |
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var skin = this.getSkin(); |
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|
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// Clear |
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this.ctx.clearRect(0,0,this.renderRadius*2,this.renderRadius*2); |
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|
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// Draw the outer edge of the clock |
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if (skin.outerBorder) |
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this.fullCircleAt(this.renderRadius,this.renderRadius,skin.outerBorder); |
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|
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// Draw the tick marks. Every 5th one is a big one |
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for (var i=0;i<60;i++) { |
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(i%5) && skin.smallIndicator && this.radialLineAtAngle(this.tickAngle(i),skin.smallIndicator); |
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!(i%5) && skin.largeIndicator && this.radialLineAtAngle(this.tickAngle(i),skin.largeIndicator); |
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} |
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|
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// Write the time and or date |
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if (this.showDigital || this.showDigital24 || this.showDate) { |
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var text; |
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if (this.showDigital) text = this.timeText(hour,min,sec,true,false); |
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else if (this.showDigital24) text = this.timeText(hour,min,sec,false,true); |
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else text = date; |
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this.drawTextAt( |
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text, |
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this.renderRadius, |
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this.renderRadius+this.renderRadius/2 |
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); |
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} |
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|
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var hourA = (hour%12)*5 + min/12.0, |
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minA = min + sec/60.0, |
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secA = sec; |
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|
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// Draw the hands |
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if (skin.hourHand) |
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this.radialLineAtAngle(this.tickAngle(hourA),skin.hourHand); |
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|
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if (skin.minuteHand) |
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this.radialLineAtAngle(this.tickAngle(minA),skin.minuteHand); |
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|
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if (this.showSecondHand && skin.secondHand) |
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this.radialLineAtAngle(this.tickAngle(secA),skin.secondHand); |
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|
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// Hands decoration - not in IE |
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if (!CoolClock.config.isIE) { |
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if (skin.hourDecoration) |
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this.radialLineAtAngle(this.tickAngle(hourA), skin.hourDecoration); |
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|
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if (skin.minDecoration) |
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this.radialLineAtAngle(this.tickAngle(minA), skin.minDecoration); |
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|
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if (this.showSecondHand && skin.secondDecoration) |
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this.radialLineAtAngle(this.tickAngle(secA),skin.secondDecoration); |
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} |
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|
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if (this.extraRender) { |
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this.extraRender(hour,min,sec); |
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} |
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}, |
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|
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// Check the time and display the clock |
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refreshDisplay: function() { |
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var now = new Date(); |
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if (this.gmtOffset != null) { |
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// Use GMT + gmtOffset |
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var offsetNow = new Date(now.valueOf() + (this.gmtOffset * 1000 * 60 * 60)); |
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this.render(offsetNow.getUTCHours(),offsetNow.getUTCMinutes(),offsetNow.getUTCSeconds(),offsetNow.toLocaleDateString()); |
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} |
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else { |
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// Use local time |
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this.render(now.getHours(),now.getMinutes(),now.getSeconds(),now.toLocaleDateString()); |
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} |
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}, |
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|
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|
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// Check the canvas element hasn't been removed |
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stillHere: function() { |
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return document.getElementById(this.canvasId) != null; |
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}, |
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|
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// Stop this clock |
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stop: function() { |
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this.active = false; |
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}, |
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|
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// Start this clock |
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start: function() { |
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this.active = true; |
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}, |
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|
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getSkin: function() { |
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var skin = CoolClock.config.skins[this.skinId]; |
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if (!skin) skin = CoolClock.config.skins[CoolClock.config.defaultSkin]; |
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return skin; |
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} |
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}; |
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|
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// Find all canvas elements that have the CoolClock class and turns them into clocks |
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CoolClock.findAndCreateClocks = function() { |
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// (Let's not use a jQuery selector here so it's easier to use frameworks other than jQuery) |
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var canvases = document.getElementsByTagName("canvas"); |
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for (var i=0;i<canvases.length;i++) { |
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// Pull out the fields from the class. Example "CoolClock:chunkySwissOnBlack:1000" |
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var fields = canvases[i].className.split(" ")[0].split(":"); |
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if (fields[0] == "CoolClock") { |
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if (!canvases[i].id) { |
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// If there's no id on this canvas element then give it one |
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canvases[i].id = '_coolclock_auto_id_' + CoolClock.config.noIdCount++; |
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} |
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// Create a clock object for this element |
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new CoolClock({ |
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canvasId: canvases[i].id, |
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skinId: fields[1], |
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displayRadius: fields[2], |
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showSecondHand: fields[3]!='noSeconds', |
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gmtOffset: fields[4], |
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showDigital: fields[5]=='showDigital', |
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showDigital24: fields[5]=='showDigital24', |
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showDate: fields[5]=='showDate', |
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logClock: fields[6]=='logClock', |
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logClockRev: fields[6]=='logClockRev' |
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}); |
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} |
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} |
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// Start ticking |
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CoolClock.tick(); |
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}; |
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|
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// If you don't have jQuery then you need a body onload like this: <body onload="CoolClock.findAndCreateClocks()"> |
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// If you do have jQuery and it's loaded already then we can do it right now |
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if (window.jQuery) jQuery(document).ready(CoolClock.findAndCreateClocks); |
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|
