cssAudio - Activefile-genericCSS - ActiveGeneric - ActiveHTML - ActiveImage - ActiveJS - ActiveSVG - ActiveText - Activefile-genericVideo - ActiveLovehtmlicon-new-collectionicon-personicon-teamlog-outoctocatpop-outspinnerstartv

Pen Settings

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

+ add another resource

You're using npm packages, so we've auto-selected Babel for you here, which we require to process imports and make it all work. If you need to use a different JavaScript preprocessor, remove the packages in the npm tab.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

+ add another resource

Use npm Packages

We can make npm packages available for you to use in your JavaScript. We use webpack to prepare them and make them available to import. We'll also process your JavaScript with Babel.

⚠️ This feature can only be used by logged in users.

Code Indentation

     

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

            
                  <head>
        <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.0/jquery.min.js"></script>
        <script src="js/jquery.knob.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);
                    },
                    draw : function () {

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

                            var a = this.angle(this.cv)  // Angle
                                , sa = this.startAngle          // Previous start angle
                                , sat = this.startAngle         // Start angle
                                , ea                            // Previous end angle
                                , eat = sat + a                 // End angle
                                , r = 1;

                            this.g.lineWidth = this.lineWidth;

                            this.o.cursor
                                && (sat = eat - 0.3)
                                && (eat = eat + 0.3);

                            if (this.o.displayPrevious) {
                                ea = this.startAngle + this.angle(this.v);
                                this.o.cursor
                                    && (sa = ea - 0.3)
                                    && (ea = ea + 0.3);
                                this.g.beginPath();
                                this.g.strokeStyle = this.pColor;
                                this.g.arc(this.xy, this.xy, this.radius - this.lineWidth, sa, ea, false);
                                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, sat, eat, false);
                            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 : 15
                                    , stopper : true
                                    , 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>
        <div class="title" style="height:440px;width:710px">
            <h1> iPod click wheel</h1>
            <div style="float:right;width:150px;height:320px;padding:40px;background-color:#EEEEEE;text-align:center;">
                <input class="infinite" data-width="115" data-thickness=".5" data-fgColor="#72dce1" data-bgColor="#FFFFFF" data-displayInput="false" data-cursor=false>
            </div>
            <div style="float:right;margin-top:0px;">
                <div class="ival" style="width:80px;text-align:center;font-size:60px;color:#AAA">0</div>
                <div class="idir" style="width:80px;text-align:center;font-size:50px;"></div>
            </div>     
    </body>
            
          
!
            
              @import url(https://fonts.googleapis.com/css?family=Raleway:400,900,800,700,600,500,300,200,100);

*{
  margin-left:10px;
}
h1{
  display:center;
  font-family:Raleway;
  font-size:40px;
  font-weight:100;
  fill:black;
}
            
          
!
            
              (function($) {

    /**
     * Kontrol library
     */
    "use strict";

    /**
     * Definition of globals and core
     */
    var k = {}, // kontrol
        max = Math.max,
        min = Math.min;

    k.c = {};
    k.c.d = $(document);
    k.c.t = function (e) {
        return e.originalEvent.touches.length - 1;
    };

    /**
     * Kontrol Object
     *
     * Definition of an abstract UI control
     *
     * Each concrete component must call this one.
     * <code>
     * k.o.call(this);
     * </code>
     */
    k.o = function () {
        var s = this;

        this.o = null; // array of options
        this.$ = null; // jQuery wrapped element
        this.i = null; // mixed HTMLInputElement or array of HTMLInputElement
        this.g = null; // 2D graphics context for 'pre-rendering'
        this.v = null; // value ; mixed array or integer
        this.cv = null; // change value ; not commited value
        this.x = 0; // canvas x position
        this.y = 0; // canvas y position
        this.$c = null; // jQuery canvas element
        this.c = null; // rendered canvas context
        this.t = 0; // touches index
        this.isInit = false;
        this.fgColor = null; // main color
        this.pColor = null; // previous color
        this.dH = null; // draw hook
        this.cH = null; // change hook
        this.eH = null; // cancel hook
        this.rH = null; // release hook
        this.scale = 1; // scale factor

        this.run = function () {
            var cf = function (e, conf) {
                var k;
                for (k in conf) {
                    s.o[k] = conf[k];
                }
                s.init();
                s._configure()
                 ._draw();
            };

            if(this.$.data('kontroled')) return;
            this.$.data('kontroled', true);

            this.extend();
            this.o = $.extend(
                {
                    // Config
                    min : this.$.data('min') || 0,
                    max : this.$.data('max') || 7,
                    stopper : true,
                    readOnly : this.$.data('readonly'),

                    // UI
                    cursor : (this.$.data('cursor') === true && 30)
                                || this.$.data('cursor')
                                || 0,
                    thickness : this.$.data('thickness') || 0.35,
                    lineCap : this.$.data('linecap') || 'butt',
                    width : this.$.data('width') || 200,
                    height : this.$.data('height') || 200,
                    displayInput : this.$.data('displayinput') == null || this.$.data('displayinput'),
                    displayPrevious : this.$.data('displayprevious'),
                    fgColor : this.$.data('fgcolor') || '#87CEEB',
                    inputColor: this.$.data('inputcolor') || this.$.data('fgcolor') || '#87CEEB',
                    inline : false,
                    step : this.$.data('step') || 1,

                    // Hooks
                    draw : null, // function () {}
                    change : null, // function (value) {}
                    cancel : null, // function () {}
                    release : null, // function (value) {}
                    error : null // function () {}
                }, this.o
            );

            // routing value
            if(this.$.is('fieldset')) {

                // fieldset = array of integer
                this.v = {};
                this.i = this.$.find('input')
                this.i.each(function(k) {
                    var $this = $(this);
                    s.i[k] = $this;
                    s.v[k] = $this.val();

                    $this.bind(
                        'change'
                        , function () {
                            var val = {};
                            val[k] = $this.val();
                            s.val(val);
                        }
                    );
                });
                this.$.find('legend').remove();

            } else {
                // input = integer
                this.i = this.$;
                this.v = this.$.val();
                (this.v == '') && (this.v = this.o.min);

                this.$.bind(
                    'change'
                    , function () {
                        s.val(s._validate(s.$.val()));
                    }
                );
            }

            (!this.o.displayInput) && this.$.hide();

            this.$c = $('<canvas width="' +
                            this.o.width + 'px" height="' +
                            this.o.height + 'px"></canvas>');
            
            this.c = this.$c[0].getContext? this.$c[0].getContext('2d') : null;

            if (!this.c) {
                this.o.error && this.o.error();
                return;
            }

            this.$
                .wrap($('<div style="' + (this.o.inline ? 'display:inline;' : '') +
                        'width:' + this.o.width + 'px;height:' +
                        this.o.height + 'px;"></div>'))
                .before(this.$c);

            this.scale = (window.devicePixelRatio || 1) /
                        (
                            this.c.webkitBackingStorePixelRatio ||
                            this.c.mozBackingStorePixelRatio ||
                            this.c.msBackingStorePixelRatio ||
                            this.c.oBackingStorePixelRatio ||
                            this.c.backingStorePixelRatio || 1
                        );
            if (this.scale !== 1) {
                this.$c[0].width = this.$c[0].width * this.scale;
                this.$c[0].height = this.$c[0].height * this.scale;
                this.$c.width(this.o.width);
                this.$c.height(this.o.height);
            }

            if (this.v instanceof Object) {
                this.cv = {};
                this.copy(this.v, this.cv);
            } else {
                this.cv = this.v;
            }

            this.$
                .bind("configure", cf)
                .parent()
                .bind("configure", cf);

            this._listen()
                ._configure()
                ._xy()
                .init();

            this.isInit = true;

            this._draw();

            return this;
        };

        this._draw = function () {

            // canvas pre-rendering
            var d = true,
                c = document.createElement('canvas');

            c.width = s.o.width * s.scale;
            c.height = s.o.height * s.scale;

            s.g = c.getContext('2d');

            s.clear();

            s.dH
            && (d = s.dH());

            (d !== false) && s.draw();

            s.c.drawImage(c, 0, 0);
            c = null;
        };

        this._touch = function (e) {

            var touchMove = function (e) {

                var v = s.xy2val(
                            e.originalEvent.touches[s.t].pageX,
                            e.originalEvent.touches[s.t].pageY
                            );

                if (v == s.cv) return;

                if (
                    s.cH
                    && (s.cH(v) === false)
                ) return;


                s.change(s._validate(v));
                s._draw();
            };

            // get touches index
            this.t = k.c.t(e);

            // First touch
            touchMove(e);

            // Touch events listeners
            k.c.d
                .bind("touchmove.k", touchMove)
                .bind(
                    "touchend.k"
                    , function () {
                        k.c.d.unbind('touchmove.k touchend.k');

                        if (
                            s.rH
                            && (s.rH(s.cv) === false)
                        ) return;

                        s.val(s.cv);
                    }
                );

            return this;
        };

        this._mouse = function (e) {

            var mouseMove = function (e) {
                var v = s.xy2val(e.pageX, e.pageY);
                if (v == s.cv) return;

                if (
                    s.cH
                    && (s.cH(v) === false)
                ) return;

                s.change(s._validate(v));
                s._draw();
            };

            // First click
            mouseMove(e);

            // Mouse events listeners
            k.c.d
                .bind("mousemove.k", mouseMove)
                .bind(
                    // Escape key cancel current change
                    "keyup.k"
                    , function (e) {
                        if (e.keyCode === 27) {
                            k.c.d.unbind("mouseup.k mousemove.k keyup.k");

                            if (
                                s.eH
                                && (s.eH() === false)
                            ) return;

                            s.cancel();
                        }
                    }
                )
                .bind(
                    "mouseup.k"
                    , function (e) {
                        k.c.d.unbind('mousemove.k mouseup.k keyup.k');

                        if (
                            s.rH
                            && (s.rH(s.cv) === false)
                        ) return;

                        s.val(s.cv);
                    }
                );

            return this;
        };

        this._xy = function () {
            var o = this.$c.offset();
            this.x = o.left;
            this.y = o.top;
            return this;
        };

        this._listen = function () {

            if (!this.o.readOnly) {
                this.$c
                    .bind(
                        "mousedown"
                        , function (e) {
                            e.preventDefault();
                            s._xy()._mouse(e);
                         }
                    )
                    .bind(
                        "touchstart"
                        , function (e) {
                            e.preventDefault();
                            s._xy()._touch(e);
                         }
                    );
                this.listen();
            } else {
                this.$.attr('readonly', 'readonly');
            }

            return this;
        };

        this._configure = function () {

            // Hooks
            if (this.o.draw) this.dH = this.o.draw;
            if (this.o.change) this.cH = this.o.change;
            if (this.o.cancel) this.eH = this.o.cancel;
            if (this.o.release) this.rH = this.o.release;

            if (this.o.displayPrevious) {
                this.pColor = this.h2rgba(this.o.fgColor, "0.4");
                this.fgColor = this.h2rgba(this.o.fgColor, "0.6");
            } else {
                this.fgColor = this.o.fgColor;
            }

            return this;
        };

        this._clear = function () {
            this.$c[0].width = this.$c[0].width;
        };

        this._validate = function(v) {
            return (~~ (((v < 0) ? -0.5 : 0.5) + (v/this.o.step))) * this.o.step;
        };

        // Abstract methods
        this.listen = function () {}; // on start, one time
        this.extend = function () {}; // each time configure triggered
        this.init = function () {}; // each time configure triggered
        this.change = function (v) {}; // on change
        this.val = function (v) {}; // on release
        this.xy2val = function (x, y) {}; //
        this.draw = function () {}; // on change / on release
        this.clear = function () { this._clear(); };

        // Utils
        this.h2rgba = function (h, a) {
            var rgb;
            h = h.substring(1,7)
            rgb = [parseInt(h.substring(0,2),16)
                   ,parseInt(h.substring(2,4),16)
                   ,parseInt(h.substring(4,6),16)];
            return "rgba(" + rgb[0] + "," + rgb[1] + "," + rgb[2] + "," + a + ")";
        };

        this.copy = function (f, t) {
            for (var i in f) { t[i] = f[i]; }
        };
    };


    /**
     * k.Dial
     */
    k.Dial = function () {
        k.o.call(this);

        this.startAngle = null;
        this.xy = null;
        this.radius = null;
        this.lineWidth = null;
        this.cursorExt = null;
        this.w2 = null;
        this.PI2 = 2*Math.PI;

        this.extend = function () {
            this.o = $.extend(
                {
                    bgColor : this.$.data('bgcolor') || '#EEEEEE',
                    angleOffset : this.$.data('angleoffset') || 0,
                    angleArc : this.$.data('anglearc') || 360,
                    inline : true
                }, this.o
            );
        };

        this.val = function (v) {
            if (null != v) {
                this.cv = this.o.stopper ? max(min(v, this.o.max), this.o.min) : v;
                this.v = this.cv;
                this.$.val(this.v);
                this._draw();
            } else {
                return this.v;
            }
        };

        this.xy2val = function (x, y) {
            var a, ret;

            a = Math.atan2(
                        x - (this.x + this.w2)
                        , - (y - this.y - this.w2)
                    ) - this.angleOffset;

            if(this.angleArc != this.PI2 && (a < 0) && (a > -0.5)) {
                // if isset angleArc option, set to min if .5 under min
                a = 0;
            } else if (a < 0) {
                a += this.PI2;
            }

            ret = ~~ (0.5 + (a * (this.o.max - this.o.min) / this.angleArc))
                    + this.o.min;

            this.o.stopper
            && (ret = max(min(ret, this.o.max), this.o.min));

            return ret;
        };

        this.listen = function () {
            // bind MouseWheel
            var s = this,
                mw = function (e) {
                            e.preventDefault();
                            var ori = e.originalEvent
                                ,deltaX = ori.detail || ori.wheelDeltaX
                                ,deltaY = ori.detail || ori.wheelDeltaY
                                ,v = parseInt(s.$.val()) + (deltaX>0 || deltaY>0 ? s.o.step : deltaX<0 || deltaY<0 ? -s.o.step : 0);

                            if (
                                s.cH
                                && (s.cH(v) === false)
                            ) return;

                            s.val(v);
                        }
                , kval, to, m = 1, kv = {37:-s.o.step, 38:s.o.step, 39:s.o.step, 40:-s.o.step};

            this.$
                .bind(
                    "keydown"
                    ,function (e) {
                        var kc = e.keyCode;

                        // numpad support
                        if(kc >= 96 && kc <= 105) {
                            kc = e.keyCode = kc - 48;
                        }

                        kval = parseInt(String.fromCharCode(kc));

                        if (isNaN(kval)) {

                            (kc !== 13)         // enter
                            && (kc !== 8)       // bs
                            && (kc !== 9)       // tab
                            && (kc !== 189)     // -
                            && e.preventDefault();

                            // arrows
                            if ($.inArray(kc,[37,38,39,40]) > -1) {
                                e.preventDefault();

                                var v = parseInt(s.$.val()) + kv[kc] * m;

                                s.o.stopper
                                && (v = max(min(v, s.o.max), s.o.min));

                                s.change(v);
                                s._draw();

                                // long time keydown speed-up
                                to = window.setTimeout(
                                    function () { m*=2; }
                                    ,30
                                );
                            }
                        }
                    }
                )
                .bind(
                    "keyup"
                    ,function (e) {
                        if (isNaN(kval)) {
                            if (to) {
                                window.clearTimeout(to);
                                to = null;
                                m = 1;
                                s.val(s.$.val());
                            }
                        } else {
                            // kval postcond
                            (s.$.val() > s.o.max && s.$.val(s.o.max))
                            || (s.$.val() < s.o.min && s.$.val(s.o.min));
                        }

                    }
                );

            this.$c.bind("mousewheel DOMMouseScroll", mw);
            this.$.bind("mousewheel DOMMouseScroll", mw)
        };

        this.init = function () {

            if (
                this.v < this.o.min
                || this.v > this.o.max
            ) this.v = this.o.min;

            this.$.val(this.v);
            this.w2 = this.o.width / 2;
            this.cursorExt = this.o.cursor / 100;
            this.xy = this.w2 * this.scale;
            this.lineWidth = this.xy * this.o.thickness;
            this.lineCap = this.o.lineCap;
            this.radius = this.xy - this.lineWidth / 2;

            this.o.angleOffset
            && (this.o.angleOffset = isNaN(this.o.angleOffset) ? 0 : this.o.angleOffset);

            this.o.angleArc
            && (this.o.angleArc = isNaN(this.o.angleArc) ? this.PI2 : this.o.angleArc);

            // deg to rad
            this.angleOffset = this.o.angleOffset * Math.PI / 180;
            this.angleArc = this.o.angleArc * Math.PI / 180;

            // compute start and end angles
            this.startAngle = 1.5 * Math.PI + this.angleOffset;
            this.endAngle = 1.5 * Math.PI + this.angleOffset + this.angleArc;

            var s = max(
                            String(Math.abs(this.o.max)).length
                            , String(Math.abs(this.o.min)).length
                            , 2
                            ) + 2;

            this.o.displayInput
                && this.i.css({
                        'width' : ((this.o.width / 2 + 4) >> 0) + 'px'
                        ,'height' : ((this.o.width / 3) >> 0) + 'px'
                        ,'position' : 'absolute'
                        ,'vertical-align' : 'middle'
                        ,'margin-top' : ((this.o.width / 3) >> 0) + 'px'
                        ,'margin-left' : '-' + ((this.o.width * 3 / 4 + 2) >> 0) + 'px'
                        ,'border' : 0
                        ,'background' : 'none'
                        ,'font' : 'bold ' + ((this.o.width / s) >> 0) + 'px Arial'
                        ,'text-align' : 'center'
                        ,'color' : this.o.inputColor || this.o.fgColor
                        ,'padding' : '0px'
                        ,'-webkit-appearance': 'none'
                        })
                || this.i.css({
                        'width' : '0px'
                        ,'visibility' : 'hidden'
                        });
        };

        this.change = function (v) {
            this.cv = v;
            this.$.val(v);
        };

        this.angle = function (v) {
            return (v - this.o.min) * this.angleArc / (this.o.max - this.o.min);
        };

        this.draw = function () {

            var c = this.g,                 // context
                a = this.angle(this.cv)    // Angle
                , sat = this.startAngle     // Start angle
                , eat = sat + a             // End angle
                , sa, ea                    // Previous angles
                , r = 1;

            c.lineWidth = this.lineWidth;

            c.lineCap = this.lineCap;

            this.o.cursor
                && (sat = eat - this.cursorExt)
                && (eat = eat + this.cursorExt);

            c.beginPath();
                c.strokeStyle = this.o.bgColor;
                c.arc(this.xy, this.xy, this.radius, this.endAngle, this.startAngle, true);
            c.stroke();

            if (this.o.displayPrevious) {
                ea = this.startAngle + this.angle(this.v);
                sa = this.startAngle;
                this.o.cursor
                    && (sa = ea - this.cursorExt)
                    && (ea = ea + this.cursorExt);

                c.beginPath();
                    c.strokeStyle = this.pColor;
                    c.arc(this.xy, this.xy, this.radius, sa, ea, false);
                c.stroke();
                r = (this.cv == this.v);
            }

            c.beginPath();
                c.strokeStyle = r ? this.o.fgColor : this.fgColor ;
                c.arc(this.xy, this.xy, this.radius, sat, eat, false);
            c.stroke();
        };

        this.cancel = function () {
            this.val(this.v);
        };
    };

    $.fn.dial = $.fn.knob = function (o) {
        return this.each(
            function () {
                var d = new k.Dial();
                d.o = o;
                d.$ = $(this);
                d.run();
            }
        ).parent();
    };

})(jQuery);
            
          
!
999px
🕑 One or more of the npm packages you are using needs to be built. You're the first person to ever need it! We're building it right now and your preview will start updating again when it's ready.
Loading ..................

Console