<!DOCTYPE html> <html>

<head>
    <title>jQuery Knob demo</title>
    <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js"></script>
    <!--[if IE]><script type="text/javascript" src="excanvas.js"></script><![endif]-->
    <script src="dist/jquery.knob.min.js"></script>
    <script>
        $(function($) {

            $(".knob").knob({
                change : function (value) {
                    //console.log("change : " + value);
                },
                release : function (value) {
                    //console.log(this.$.attr('value'));
                    console.log("release : " + value);
                },
                cancel : function () {
                    console.log("cancel : ", this);
                },
                /*format : function (value) {
                    return value + '%';
                },*/
                draw : function () {

                    // "tron" case
                    if(this.$.data('skin') == 'tron') {

                        this.cursorExt = 0.3;

                        var a = this.arc(this.cv)  // Arc
                            , pa                   // Previous arc
                            , r = 1;

                        this.g.lineWidth = this.lineWidth;

                        if (this.o.displayPrevious) {
                            pa = this.arc(this.v);
                            this.g.beginPath();
                            this.g.strokeStyle = this.pColor;
                            this.g.arc(this.xy, this.xy, this.radius - this.lineWidth, pa.s, pa.e, pa.d);
                            this.g.stroke();
                        }

                        this.g.beginPath();
                        this.g.strokeStyle = r ? this.o.fgColor : this.fgColor ;
                        this.g.arc(this.xy, this.xy, this.radius - this.lineWidth, a.s, a.e, a.d);
                        this.g.stroke();

                        this.g.lineWidth = 2;
                        this.g.beginPath();
                        this.g.strokeStyle = this.o.fgColor;
                        this.g.arc( this.xy, this.xy, this.radius - this.lineWidth + 1 + this.lineWidth * 2 / 3, 0, 2 * Math.PI, false);
                        this.g.stroke();

                        return false;
                    }
                }
            });

            // Example of infinite knob, iPod click wheel
            var v, up=0,down=0,i=0
                ,$idir = $("div.idir")
                ,$ival = $("div.ival")
                ,incr = function() { i++; $idir.show().html("+").fadeOut(); $ival.html(i); }
                ,decr = function() { i--; $idir.show().html("-").fadeOut(); $ival.html(i); };
            $("input.infinite").knob(
                                {
                                min : 0
                                , max : 20
                                , stopper : false
                                , change : function () {
                                                if(v > this.cv){
                                                    if(up){
                                                        decr();
                                                        up=0;
                                                    }else{up=1;down=0;}
                                                } else {
                                                    if(v < this.cv){
                                                        if(down){
                                                            incr();
                                                            down=0;
                                                        }else{down=1;up=0;}
                                                    }
                                                }
                                                v = this.cv;
                                            }
                                });
        });
    </script>
    <style>
        body{
          padding: 0;
          margin: 0px 50px;
          font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
          font-weight: 300;
          text-rendering: optimizelegibility;
        }
        p{font-size: 30px; line-height: 30px}
        div.demo{text-align: center; width: 280px; float: left}
        div.demo > p{font-size: 20px}
    </style>
</head>
<body>
    <div style="width:100%;font-size:40px;letter-spacing:-8px;line-height:40px;">
        <h1>jQuery Knob</h1>
    </div>
    <div>
        <p>Nice, downward compatible, touchable, jQuery dial. <a href="http://flattr.com/thing/674900/jQuery-Knob" target="_blank"><img src="http://api.flattr.com/button/flattr-badge-large.png" alt="Flattr this" title="Flattr this" border="0" /></a></p>
        <p style="font-size: 20px">* implemented interactions : mouse click and wheel mouse, keyboard (on focus) and fingers (touch events)</p>
    </div>
    <div class="demo">
        <p>&#215; Disable display input</p>
        <pre>

data-width=“100” data-displayInput=false

    </pre>
    <input class="knob" data-width="100" data-displayInput=false value="35">
</div>
<div class="demo">
    <p>&#215; 'cursor' mode</p>
    <pre>

data-width=“150” data-cursor=true data-thickness=.3 data-fgColor=“#222222”

    </pre>
    <input class="knob" data-width="150" data-cursor=true data-fgColor="#222222" data-thickness=.3 value="29">
</div>
<div class="demo" >
    <p>&#215; Display previous value</p>
    <pre>

data-displayPrevious=true data-min=“-100”

    </pre>
    <input class="knob" data-width="200" data-min="-100" data-displayPrevious=true value="44">
</div>
<div style="clear:both"></div>
<div class="demo">
    <p>&#215; Angle offset</p>
    <pre>

data-angleOffset=90 data-linecap=round

    </pre>
    <input class="knob" data-angleOffset=90 data-linecap=round value="35">
</div>
<div class="demo">
    <p>&#215; Angle offset and arc</p>
    <pre>

data-fgColor=“#66CC66” data-angleOffset=-125 data-angleArc=250 data-rotation=anticlockwise

    </pre>
    <input class="knob" data-angleOffset=-125 data-angleArc=250 data-fgColor="#66EE66" data-rotation="anticlockwise" value="35">
</div>
<div class="demo" >
    <p>&#215; 4-digit, step 0.1</p>
    <pre>

data-step=“.1” data-min=“-10000” data-max=“10000” value=“0” data-displayPrevious=true

        </pre>
        <input class="knob" data-min="-10000" data-displayPrevious=true data-max="10000" data-step=".1" value="0">
    </div>
    <div style="clear:both"></div>
    <div style="text-align: center">
        <p style="font-size: 20px">&#215; Overloaded 'draw' method</p>
    </div>
    <div style="background-color: #222; height: 340px">
        <div class="demo" style="background-color:#222; color:#FFF;">
            <pre>
data-width="75"
data-fgColor="#ffec03"
data-skin="tron"
data-thickness=".2"
data-displayPrevious=true
            </pre>
            <input class="knob" data-width="75" data-displayPrevious=true data-fgColor="#ffec03" data-skin="tron" data-cursor=true value="75" data-thickness=".2">
        </div>
        <div class="demo" style="background-color:#222; color:#FFF;">
            <pre>
data-width="150"
data-fgColor="#ffec03"
data-skin="tron"
data-thickness=".2"
data-displayPrevious=true
            </pre>
            <input class="knob" data-width="150" data-displayPrevious=true data-fgColor="#ffec03" data-skin="tron" data-thickness=".2" value="75">
        </div>
        <div class="demo" style="background-color:#222; color:#FFF;">
            <pre>
data-width="150"
data-fgColor="#C0ffff"
data-skin="tron"
data-thickness=".1"
data-angleOffset="180"
            </pre>
            <input class="knob" data-width="150" data-angleOffset="180" data-fgColor="#C0ffff" data-skin="tron" data-thickness=".1" value="35">
        </div>
    </div>
    <div style="clear:both"></div>
    <div class="demo" style="width:100%">
        <p>&#215; Responsive</p>
        <pre>

data-width=“80%”

    </pre>
    <div style="width: 30%; border: 3px dashed; margin-bottom: 20px">
        <i>
            Current div width is 30% of window width.<br>
            Knob width is 80% of current div.<br>
            Knob width is 80% of 30% of window width.<br>
            Test resizing window.
        </i>
        <br>
        <br>
        <input class="knob" data-width="80%" value="35">
    </div>
</div>
<div style="clear:both"></div>
<script>
function clock() {
    var $s = $(".second"),
        $m = $(".minute"),
        $h = $(".hour");
        d = new Date(),
        s = d.getSeconds(),
        m = d.getMinutes(),
        h = d.getHours();
    $s.val(s).trigger("change");
    $m.val(m).trigger("change");
    $h.val(h).trigger("change");
    setTimeout("clock()", 1000);
}
clock();
</script>
<div class="demo" style="color:#EEE;background:#222;height:420px;width:100%">
    <p>&#215; Superpose (clock)</p>
    <div style="position:relative;width:350px;margin:auto">
        <div style="position:absolute;left:10px;top:10px">
            <input class="knob hour" data-min="0" data-max="24" data-bgColor="#333" data-fgColor="#ffec03" data-displayInput=false data-width="300" data-height="300" data-thickness=".3">
        </div>
        <div style="position:absolute;left:60px;top:60px">
            <input class="knob minute" data-min="0" data-max="60" data-bgColor="#333" data-displayInput=false data-width="200" data-height="200" data-thickness=".45">
        </div>
        <div style="position:absolute;left:110px;top:110px">
            <input class="knob second" data-min="0" data-max="60" data-bgColor="#333" data-fgColor="rgb(127, 255, 0)" data-displayInput=false data-width="100" data-height="100" data-thickness=".3">
        </div>
    </div>
</div>
<div style="clear:both"></div>
<div class="demo">
    <p>&#215; Readonly</p>
    <pre>

readonly (or data-readOnly=true) data-thickness=“.4” data-fgColor=“chartreuse”

    </pre>
    <input class="knob" data-fgColor="chartreuse" data-thickness=".4" readonly value="22">
</div>
<div class="demo">
    <p>&#215; Dynamic</p>
    <pre>

data-width=“200”

</pre>
<input type="button" onclick="$('.knob-dyn').knob();" value="knobify!">
<input type="text" class="knob-dyn" data-width="200" data-cursor=true value="56">
<pre>

data-width=“50” data-cursor=true

    </pre>
    <input type="button" onclick="$('.knob-dyn2').knob();" value="knobify!">
    <input type="text" class="knob-dyn2" data-width="50" data-thickness=".4" value="56">
</div>
<div class="demo" style="height:440px;width:300px">
    <p>&#215; Infinite || iPod click wheel</p>
    <div style="float:left;width:180px;height:320px;padding:20px;background-color:#EEEEEE;text-align:center;">
        <pre>

data-width=“150” data-cursor=true data-thickness=“.5” data-fgColor=“#AAAAAA” data-bgColor=“#FFFFFF” data-displayInput=“false” + some code

            </pre>
            <input class="infinite" value="0" data-width="150" data-thickness=".5" data-fgColor="#AAAAAA" data-bgColor="#FFFFFF" data-displayInput="false" data-cursor=true>
        </div>
        <div style="float:left;margin-top:200px;">
            <div class="ival" style="width:80px;text-align:center;font-size:50px;color:#AAA">0</div>
            <div class="idir" style="width:80px;text-align:center;font-size:50px;"></div>
        </div>
    </div>
    <div style="clear:both"></div>
    <div style="margin-top:30px;text-align:center">
        <img src="https://raw.github.com/aterrien/jQuery-Knob/master/secretplan.jpg">
        <p style="font-size:20px;">jQuery Knob is &copy; 2012 Anthony Terrien - MIT License</p>
    </div>
</body>

</html>