[JS,Canvas]日历时钟

Html:

 <!doctype html>

 <html>

 <head>

 <meta charset="UTF-8">

 <title>Document</title>

 <script src="requestNextAnimationFrame.js"></script>

 <script src="calendarWithTime.js"></script>

 </head>

 <body>

 <style>

 * {margin:0; padding:0;}

 #calendarWithTime{

     margin : 0;

 }

 </style>

 <canvas id="calendarWithTime"></canvas>

 </body>

 </html>

js:

;var calendarWithTime = function(){

    v = navigator.userAgent.toLowerCase().indexOf("android") != -1 || navigator.userAgent.toLowerCase().indexOf("iphone") != -1 || navigator.userAgent.toLowerCase().indexOf("ipad") != -1;

    // 浏览器可见区域

    appWidth =  (window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth);

    appHeight =  (window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight) - 3; // chrome下，高度一样是，会出现下拉滚动条

    // 中心点

    centerPoint = {'x':appWidth*0.5,'y':appHeight*0.5};

    // 动画用

    lastFpsUpdateTime = (+new Date);

    // canvas对象

    caObj = null;

    // canvas context对象

    ctxtObj = null;

    // 现在时间

    timeNow = "";

    // 开始年份

    startY = 1988;

    init = function(){

        window.onload=function(){this.initCanvas();}

    }();

    getDomId = function(id){return document.getElementById(id);}

    initCanvas = function(id){

        this.caObj = this.getDomId("calendarWithTime");

        this.ctxtObj = this.caObj.getContext("2d");

        // 全屏canvas

        this.caObj.style.width = (this.appWidth+'px');

        this.caObj.style.height = (this.appHeight+'px');

        this.caObj.width = this.appWidth;

        this.caObj.height = this.appHeight;

        if (v) {

            caObj.style.border = "none";

        }

        // 开始年份

        startY = Math.floor((new Date()).getFullYear() / 8) * 8;

        // test

        // startY = Math.floor(2010 / 8) * 8;

        this.lastFpsUpdateTime = (+new Date);

        this.animate();

    }

    doDraw = function(){

        this.ctxtObj.clearRect(0, 0, this.caObj.width, this.caObj.height);

        var date = new Date();

        // test

        /*date.setDate(29);

        date.setMonth(3);

        date.setFullYear(2010);*/

        var afterGap = 8 - (date.getFullYear() - startY);

        var allYears = date.getFullYear()-this.startY+afterGap;

        var allDays = this.getCountDays(date.getFullYear(),date.getMonth());

        this.doDrawDayPanel(31,allDays);

        this.doDrawMonthPanel();

        this.doDrawYearPanel(this.startY,date.getFullYear(),afterGap);

        // 画时间针

        this.doDrawTPanel();

        this.drawYMDHMS(0,0.35,0,0.1,date.getSeconds(),0,30,'s','');

        this.drawYMDHMS(0,0.3,0,0.05,date.getMinutes(),date.getSeconds()/60,30,'m','');

        this.drawYMDHMS(0,0.25,0,0.03,date.getHours() % 12,date.getMinutes()/60,6,'h','');

        this.drawYMDHMS(0.4,0.7,0.4,0.66,date.getDate(),date.getHours()/24,Math.ceil(31*0.5),'d',date.getDate());

        this.drawYMDHMS(0.4,0.6,0.4,0.568,(date.getMonth()),date.getDate()/(allDays+1),6,'M',date.getMonth()+1);

        this.drawYMDHMS(0.4,0.55,0.4,0.52,(date.getFullYear() - this.startY),(date.getMonth()+1)/13,Math.ceil(allYears*0.5),'y',date.getFullYear());

        // 显示时间

        this.getTimeNow();

        this.ctxtObj.save();

        this.ctxtObj.beginPath();

        this.ctxtObj.fillStyle = "#369";

        this.ctxtObj.strokeStyle = "#369";

        this.ctxtObj.font = "30px bold 微软雅黑";

        this.ctxtObj.textAlign="start";

        this.ctxtObj.textBaseline="top";

        this.ctxtObj.fillText(this.timeNow,0,0);

        this.ctxtObj.strokeText(this.timeNow,0,0);

        this.ctxtObj.restore();

        /*

        fillText(String text,float x,float y,[float maxwidth]):填充字符串

        strokeText(String text,float x,float y,[float maxwidth])：绘制边框

        font="bold 45px 宋体"

        textAlign：设置绘制字符串的水平对齐方式,start|end|right|center

        textBaseline：垂直对齐方式：top|hanging|middle|alphabetic|bottom

        */

    }

    doChangeToFront = function(i,x){

        // 转换为画面值

        return (i +Math.ceil(x/4)) % 60;

    }

    doChangeToEnd = function(i,x){

        // 转换为后台值

        return (i +Math.ceil(x/4*3)) % 60;

    }

    doDrawTPanel = function(){

        // 画时钟面板

        var minsLen = Math.min( this.caObj.width, this.caObj.height)*0.5*0.3;

        var mineLen = Math.min( this.caObj.width, this.caObj.height)*0.5*0.32;

        var maxsLen = Math.min( this.caObj.width, this.caObj.height)*0.5*0.28;

        var maxeLen = Math.min( this.caObj.width, this.caObj.height)*0.5*0.34;

        var gap = Math.PI/30;

        futoNum = 5;

        this.ctxtObj.save();

            this.ctxtObj.fillStyle = "#369";

        this.ctxtObj.strokeStyle = "#369";

        for(var i =0;i<=59;i++){

            if(i % futoNum==0){

                sLen = maxsLen;

                eLen = maxeLen;

            }else{

                sLen = minsLen;

                eLen = mineLen;

            }

            this.ctxtObj.beginPath();

            this.ctxtObj.moveTo(Math.cos(i*gap)*sLen + this.centerPoint.x ,Math.sin(i*gap)*sLen + this.centerPoint.y);

            this.ctxtObj.lineTo(Math.cos(i*gap)*eLen + this.centerPoint.x,Math.sin(i*gap)*eLen + this.centerPoint.y);

            this.ctxtObj.stroke();

            this.ctxtObj.closePath();

            /*iDiff = this.doChangeToFront(i); // i => iDiff

            //iDiff2 = this.doChangeToEnd(iDiff,60); // iDiff => i

            this.ctxtObj.font = "2px bold 微软雅黑";

            this.ctxtObj.textAlign="center"

            this.ctxtObj.textBaseline="middle"

            this.ctxtObj.fillText(iDiff,Math.cos(i*gap)*eLen + this.centerPoint.x,Math.sin(i*gap)*eLen + this.centerPoint.y);

            */

        }

        this.ctxtObj.beginPath();

        this.ctxtObj.arc(this.centerPoint.x,this.centerPoint.y,Math.min( this.caObj.width, this.caObj.height)*0.5*0.01,0,360,false);

        this.ctxtObj.fillStyle="red";

        this.ctxtObj.fill();

        this.ctxtObj.closePath();

        this.ctxtObj.restore();

    }

    doDrawYearPanel = function(startYear,nowYear,afterGap){

        // 画年份面板

        var sLen = Math.min( this.caObj.width, this.caObj.height)*0.5*0.53;

        var eLen = Math.min( this.caObj.width, this.caObj.height)*0.5*0.55;

        var labelLen = Math.min( this.caObj.width, this.caObj.height)*0.5*0.60;

        var allYears = nowYear-startYear+afterGap;

        var gap = Math.PI/Math.ceil(allYears*0.5);

        this.ctxtObj.save();

            this.ctxtObj.fillStyle = "#b4ffff";

        this.ctxtObj.beginPath();

        this.ctxtObj.arc(this.centerPoint.x,this.centerPoint.y,eLen+2,0,360,false);

        this.ctxtObj.closePath();

        this.ctxtObj.fill();

            this.ctxtObj.fillStyle = "white";

        this.ctxtObj.beginPath();

        this.ctxtObj.arc(this.centerPoint.x,this.centerPoint.y,sLen-2,0,360,false);

        this.ctxtObj.closePath();

        this.ctxtObj.fill();

        this.ctxtObj.restore();

            this.ctxtObj.fillStyle = "#369";

        this.ctxtObj.strokeStyle = "#369";

            for(var i =-2;i<=allYears-3;i++){

            this.ctxtObj.save();

            this.ctxtObj.beginPath();

            this.ctxtObj.moveTo(Math.cos(i*gap)*sLen + this.centerPoint.x ,Math.sin(i*gap)*sLen + this.centerPoint.y);

            this.ctxtObj.lineTo(Math.cos(i*gap)*eLen + this.centerPoint.x,Math.sin(i*gap)*eLen + this.centerPoint.y);

            this.ctxtObj.closePath();

            this.ctxtObj.stroke();

            iDiff = this.doChangeToFront(i,allYears) + startYear;

            this.ctxtObj.translate(this.centerPoint.x, this.centerPoint.y);

             this.ctxtObj.rotate(i*gap);

            this.ctxtObj.font = "10px bold 微软雅黑";

            this.ctxtObj.textAlign="start";

            this.ctxtObj.textBaseline="bottom";

            this.ctxtObj.fillText(iDiff,sLen,0);

            this.ctxtObj.restore();

        }

    }

    doDrawMonthPanel = function(){

        // 画年份面板

        var sLen = Math.min( this.caObj.width, this.caObj.height)*0.5*0.58;

        var eLen = Math.min( this.caObj.width, this.caObj.height)*0.5*0.6;

        var labelLen = Math.min( this.caObj.width, this.caObj.height)*0.5*0.70;

        var gap = Math.PI/6;

        this.ctxtObj.save();

            this.ctxtObj.fillStyle = "#fde08c";

        this.ctxtObj.beginPath();

        this.ctxtObj.arc(this.centerPoint.x,this.centerPoint.y,eLen+2,0,360,false);

        this.ctxtObj.closePath();

        this.ctxtObj.fill();

            this.ctxtObj.fillStyle = "white";

        this.ctxtObj.beginPath();

        this.ctxtObj.arc(this.centerPoint.x,this.centerPoint.y,sLen-2,0,360,false);

        this.ctxtObj.closePath();

        this.ctxtObj.fill();

        this.ctxtObj.restore();

            this.ctxtObj.fillStyle = "#369";

        this.ctxtObj.strokeStyle = "#369";

            for(var i =-2;i<=9;i++){

            this.ctxtObj.save();

            this.ctxtObj.beginPath();

            this.ctxtObj.moveTo(Math.cos(i*gap)*sLen + this.centerPoint.x ,Math.sin(i*gap)*sLen + this.centerPoint.y);

            this.ctxtObj.lineTo(Math.cos(i*gap)*eLen + this.centerPoint.x,Math.sin(i*gap)*eLen + this.centerPoint.y);

            this.ctxtObj.closePath();

            this.ctxtObj.stroke();

            iDiff = (this.doChangeToFront(i,12)) % 12+1;

            this.ctxtObj.translate(this.centerPoint.x, this.centerPoint.y);

             this.ctxtObj.rotate(i*gap);

            this.ctxtObj.font = "20px bold 微软雅黑";

            this.ctxtObj.textAlign="start";

            this.ctxtObj.textBaseline="middle";

            this.ctxtObj.fillText((iDiff+'').PadLeft(2,0),eLen,0);

            this.ctxtObj.restore();

        }

    }

    doDrawDayPanel = function(dayCount,realAllDay){

        // 画年份面板

        var sLen = Math.min( this.caObj.width, this.caObj.height)*0.5*0.68;

        var eLen = Math.min( this.caObj.width, this.caObj.height)*0.5*0.7;

        var labelLen = Math.min( this.caObj.width, this.caObj.height)*0.5*0.80;

        var gap = Math.PI/Math.ceil(dayCount*0.5);

        this.ctxtObj.save();

        this.ctxtObj.fillStyle = "#e587e5";

        this.ctxtObj.beginPath();

        this.ctxtObj.arc(this.centerPoint.x,this.centerPoint.y,eLen+2,0,360,false);

        this.ctxtObj.closePath();

        this.ctxtObj.fill();

        this.ctxtObj.fillStyle = "white";

        this.ctxtObj.beginPath();

        this.ctxtObj.arc(this.centerPoint.x,this.centerPoint.y,sLen-2,0,360,false);

        this.ctxtObj.closePath();

        this.ctxtObj.fill();

        this.ctxtObj.restore();

        this.ctxtObj.fillStyle = "#369";

        this.ctxtObj.strokeStyle = "#369";

        for(var i =-2;i<=dayCount-2;i++){

            this.ctxtObj.save();

            this.ctxtObj.beginPath();

            this.ctxtObj.moveTo(Math.cos(i*gap)*sLen + this.centerPoint.x ,Math.sin(i*gap)*sLen + this.centerPoint.y);

            this.ctxtObj.lineTo(Math.cos(i*gap)*eLen + this.centerPoint.x,Math.sin(i*gap)*eLen + this.centerPoint.y);

            this.ctxtObj.closePath();

            this.ctxtObj.stroke();

            iDiff = (this.doChangeToFront(i,dayCount)) % (dayCount+1);

            if(iDiff<=realAllDay && iDiff!=0){

                this.ctxtObj.translate(this.centerPoint.x, this.centerPoint.y);

                 this.ctxtObj.rotate(i*gap);

                this.ctxtObj.font = "20px bold 微软雅黑";

                this.ctxtObj.textAlign="start";

                this.ctxtObj.textBaseline="middle";

                this.ctxtObj.fillText((iDiff+'').PadLeft(2,0),eLen,0);

            }

            this.ctxtObj.restore();

        }

    }

    drawYMDHMS = function(slen,elen,cslen,celen,main,sub,gapM,type,value){

        // 画日期时间针

        var date = new Date();

        var siM = main;

        var siS = sub;

        var gap = Math.PI/gapM;

        var sLen = Math.min( this.caObj.width, this.caObj.height)*0.5*slen;

        var eLen = Math.min( this.caObj.width, this.caObj.height)*0.5*elen;

        var csLen = Math.min( this.caObj.width, this.caObj.height)*0.5*cslen;

        var ceLen = Math.min( this.caObj.width, this.caObj.height)*0.5*celen;

        i = this.doChangeToEnd(siM+siS,gapM*2);

        ci = (i+gapM) % (gapM*2);

        this.ctxtObj.save();

        this.ctxtObj.beginPath();

        if(type=='y'){

            this.ctxtObj.strokeStyle="#00cece";

            this.ctxtObj.lineWidth = 6;

        }else if(type=='M'){

            this.ctxtObj.strokeStyle="#ce9b00";

            this.ctxtObj.lineWidth = 5;

        }else if(type=='d'){

            this.ctxtObj.strokeStyle="#bd01bd";

            this.ctxtObj.lineWidth = 4;

        }else if(type=='h'){

            this.ctxtObj.lineWidth = 3;

        }else if(type=='m'){

            this.ctxtObj.lineWidth = 2;

        }else if(type=='s'){

            this.ctxtObj.lineWidth = 1;

        }

        this.ctxtObj.moveTo(Math.cos(i*gap)*sLen + this.centerPoint.x ,Math.sin(i*gap)*sLen + this.centerPoint.y);

        this.ctxtObj.lineTo(Math.cos(i*gap)*eLen + this.centerPoint.x,Math.sin(i*gap)*eLen + this.centerPoint.y);

        this.ctxtObj.moveTo(Math.cos(ci*gap)*csLen + this.centerPoint.x ,Math.sin(ci*gap)*csLen + this.centerPoint.y);

        this.ctxtObj.lineTo(Math.cos(ci*gap)*ceLen + this.centerPoint.x,Math.sin(ci*gap)*ceLen + this.centerPoint.y);

        this.ctxtObj.stroke();

        this.ctxtObj.closePath();

        this.ctxtObj.restore();

        var cpi = ci*gap*360/Math.PI;

        if(type=='y'){

            this.ctxtObj.save();

                this.ctxtObj.fillStyle = "#00cece";

            this.ctxtObj.strokeStyle="#00cece";

            this.ctxtObj.lineWidth = 8;

            this.ctxtObj.beginPath();

            this.ctxtObj.arc(this.centerPoint.x,this.centerPoint.y,ceLen,ci*gap-gap*0.5,ci*gap+gap*0.5,false);

            this.ctxtObj.stroke();

            this.ctxtObj.closePath();

            this.ctxtObj.translate(this.centerPoint.x, this.centerPoint.y);

             this.ctxtObj.rotate(i*gap);

            this.ctxtObj.font = "20px bold 微软雅黑";

            this.ctxtObj.textAlign="start";

            this.ctxtObj.textBaseline="middle";

            this.ctxtObj.lineWidth = 2;

            this.ctxtObj.fillText(value + '年',eLen*1.03,0);

            this.ctxtObj.strokeText(value + '年',eLen*1.03,0);

            this.ctxtObj.restore();

        }else if(type=='M'){

            this.ctxtObj.save();

            this.ctxtObj.beginPath();

                this.ctxtObj.fillStyle = "#ce9b00";

            this.ctxtObj.strokeStyle="#ce9b00";

            this.ctxtObj.lineWidth = 7;

            this.ctxtObj.arc(this.centerPoint.x,this.centerPoint.y,ceLen,ci*gap-gap*0.5,ci*gap+gap*0.5,false);

            this.ctxtObj.stroke();

            this.ctxtObj.closePath();

            this.ctxtObj.translate(this.centerPoint.x, this.centerPoint.y);

             this.ctxtObj.rotate(i*gap);

            this.ctxtObj.font = "20px bold 微软雅黑";

            this.ctxtObj.textAlign="start";

            this.ctxtObj.textBaseline="middle";

            this.ctxtObj.lineWidth = 2;

            this.ctxtObj.fillText(value + '月',eLen*1.03,0);

            this.ctxtObj.strokeText(value + '月',eLen*1.03,0);

            this.ctxtObj.restore();

        }else if(type=='d'){

            this.ctxtObj.save();

            this.ctxtObj.beginPath();

                this.ctxtObj.fillStyle = "#bd01bd";

            this.ctxtObj.strokeStyle="#bd01bd";

            this.ctxtObj.lineWidth = 6;

            this.ctxtObj.arc(this.centerPoint.x,this.centerPoint.y,ceLen,ci*gap-gap*0.5,ci*gap+gap*0.5,false);

            this.ctxtObj.stroke();

            this.ctxtObj.closePath();

            this.ctxtObj.translate(this.centerPoint.x, this.centerPoint.y);

             this.ctxtObj.rotate(i*gap);

            this.ctxtObj.font = "20px bold 微软雅黑";

            this.ctxtObj.textAlign="start";

            this.ctxtObj.textBaseline="middle";

            this.ctxtObj.lineWidth = 2;

            this.ctxtObj.fillText(value + '日',eLen*1.03,0);

            this.ctxtObj.strokeText(value + '日',eLen*1.03,0);

            this.ctxtObj.restore();

        }

        this.ctxtObj.restore();

    }

    animate = function(){

        var now = (+new Date);

        if (now - this.lastFpsUpdateTime > 60) {

            this.lastFpsUpdateTime = now;

            this.doDraw();

        }

        window.requestNextAnimationFrame(this.animate);

    }

    getCountDays = function (year,month) {

        var curDate = new Date();

        curDate.setFullYear(year);

        curDate.setMonth(month+1);

        curDate.setDate(0);

        return curDate.getDate();

    }

    getTimeNow = function(){

        var date = new Date();

        var seperator1 = "-";

        var seperator2 = ":";

        this.timeNow = date.getFullYear()

                + seperator1 + (date.getMonth()+1+'').PadLeft(2,0)

                + seperator1 + (date.getDate()+'').PadLeft(2,0)

            + " " + (date.getHours()+'').PadLeft(2,0)

                + seperator2 + (date.getMinutes()+'').PadLeft(2,0)

            + seperator2 + (date.getSeconds()+'').PadLeft(2,0)

                + '.' +(date.getMilliseconds()+'').PadLeft(3,0);

    }

    // objects

}

var cwt = new calendarWithTime();

//=================================================

String.prototype.PadLeft = function(totalWidth, paddingChar)

{

 if ( paddingChar != null )

 {

  return this.PadHelper(totalWidth, paddingChar, false);

 } else {

  return this.PadHelper(totalWidth, ' ', false);

 }

}

String.prototype.PadRight = function(totalWidth, paddingChar)

{

 if ( paddingChar != null )

 {

  return this.PadHelper(totalWidth, paddingChar, true);

 } else {

  return this.PadHelper(totalWidth, ' ', true);

 }

}

String.prototype.PadHelper = function(totalWidth, paddingChar, isRightPadded)

{

 if ( this.length < totalWidth)

 {

  var paddingString = new String();

  for (i = 1; i <= (totalWidth - this.length); i++)

  {

   paddingString += paddingChar;

  }

  if ( isRightPadded )

  {

   return (this + paddingString);

  } else {

   return (paddingString + this);

  }

 } else {

  return this;

 }

}

源码下载地址：

http://download.csdn.net/download/wangxsh42/9720724

@wangxinsheng http://www.cnblogs.com/wangxinsheng/

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