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Current File : /var/www/html/ouvidoria/cmhorizonte/js/RGraph/libraries/RGraph.meter.js
// version: 2014-08-16
/**
 * o--------------------------------------------------------------------------------o
 * | This file is part of the RGraph package - you can learn more at:               |
 * |                                                                                |
 * |                          http://www.rgraph.net                                 |
 * |                                                                                |
 * | This package is licensed under the Creative Commons BY-NC license. That means  |
 * | that for non-commercial purposes it's free to use and for business use there's |
 * | a 99 GBP per-company fee to pay. You can read the full license here:           |
 * |                                                                                |
 * |                      http://www.rgraph.net/license                             |
 * o--------------------------------------------------------------------------------o
 */

RGraph = window.RGraph || {isRGraph: true};

/**
 * The bar chart constructor
 *
 * @param string canvas The canvas ID
 * @param min    integer The minimum value
 * @param max    integer The maximum value
 * @param value  integer The indicated value
 */
RGraph.Meter = function (conf) {
    /**
     * Allow for object config style
     */
    if (typeof conf === 'object'
        && typeof conf.min === 'number'
        && typeof conf.max === 'number'
        && typeof conf.value !== 'undefined'
        && typeof conf.id === 'string') {

        var id = conf.id
        var canvas = document.getElementById(id);
        var min = conf.min;
        var max = conf.max;
        var value = conf.value;
        var parseConfObjectForOptions = true; // Set this so the config is parsed (at the end of the constructor)

    } else {

        var id = conf;
        var canvas = document.getElementById(id);
        var min = arguments[1];
        var max = arguments[2];
        var value = arguments[3];
    }


    // id, min, max, value
    // Get the canvas and context objects
    this.id = id;
    this.canvas = canvas;
    this.context = this.canvas.getContext ? this.canvas.getContext("2d", {alpha: (typeof id === 'object' && id.alpha === false) ? false : true}) : null;
    this.canvas.__object__ = this;
    this.type = 'meter';
    this.min = min;
    this.max = max;
    this.value = RGraph.stringsToNumbers(value);
    this.centerx = null;
    this.centery = null;
    this.radius = null;
    this.isRGraph = true;
    this.currentValue = null;
    this.uid = RGraph.CreateUID();
    this.canvas.uid = this.canvas.uid ? this.canvas.uid : RGraph.CreateUID();
    this.colorsParsed = false;
    this.coordsText = [];
    this.original_colors = [];
    this.firstDraw = true; // After the first draw this will be false


    /**
     * Compatibility with older browsers
     */
        //RGraph.OldBrowserCompat(this.context);


        // Various config type stuff
    this.properties =
    {
        'chart.background.image.url': null,
        'chart.background.image.offsetx': 0,
        'chart.background.image.offsety': 0,
        'chart.background.image.stretch': true,
        'chart.background.color': 'white',
        'chart.gutter.left': 15,
        'chart.gutter.right': 15,
        'chart.gutter.top': 15,
        'chart.gutter.bottom': 20,
        'chart.linewidth': 1,
        'chart.linewidth.segments': 0,
        'chart.strokestyle': null,
        'chart.border': true,
        'chart.border.color': 'black',
        'chart.text.font': 'Arial',
        'chart.text.size': 10,
        'chart.text.color': 'black',
        'chart.text.valign': 'center',
        'chart.value.text.decimals': 0,
        'chart.value.text.units.pre': '',
        'chart.value.text.units.post': '',
        'chart.title': '',
        'chart.title.background': null,
        'chart.title.hpos': null,
        'chart.title.vpos': null,
        'chart.title.color': 'black',
        'chart.title.bold': true,
        'chart.title.font': null,
        'chart.title.x': null,
        'chart.title.y': null,
        'chart.title.halign': null,
        'chart.title.valign': null,
        'chart.green.start': ((this.max - this.min) * 0.35) + this.min,
        'chart.green.end': this.max,
        'chart.green.color': '#207A20',
        'chart.yellow.start': ((this.max - this.min) * 0.1) + this.min,
        'chart.yellow.end': ((this.max - this.min) * 0.35) + this.min,
        'chart.yellow.color': '#D0AC41',
        'chart.red.start': this.min,
        'chart.red.end': ((this.max - this.min) * 0.1) + this.min,
        'chart.red.color': '#9E1E1E',
        'chart.colors.ranges': null,
        'chart.units.pre': '',
        'chart.units.post': '',
        'chart.contextmenu': null,
        'chart.zoom.factor': 1.5,
        'chart.zoom.fade.in': true,
        'chart.zoom.fade.out': true,
        'chart.zoom.hdir': 'right',
        'chart.zoom.vdir': 'down',
        'chart.zoom.frames': 25,
        'chart.zoom.delay': 16.666,
        'chart.zoom.shadow': true,
        'chart.zoom.background': true,
        'chart.zoom.action': 'zoom',
        'chart.annotatable': false,
        'chart.annotate.color': 'black',
        'chart.shadow': false,
        'chart.shadow.color': 'rgba(0,0,0,0.5)',
        'chart.shadow.blur': 3,
        'chart.shadow.offsetx': 3,
        'chart.shadow.offsety': 3,
        'chart.resizable': false,
        'chart.resize.handle.adjust': [0, 0],
        'chart.resize.handle.background': null,
        'chart.tickmarks.small.num': 100,
        'chart.tickmarks.big.num': 10,
        'chart.tickmarks.small.color': '#bbb',
        'chart.tickmarks.big.color': 'black',
        'chart.scale.decimals': 0,
        'chart.scale.point': '.',
        'chart.scale.thousand': ',',
        'chart.radius': null,
        'chart.centerx': null,
        'chart.centery': null,
        'chart.labels': true,
        'chart.labels.count': 10,
        'chart.segment.radius.start': 0,
        'chart.needle.radius': null,
        'chart.needle.tail': false,
        'chart.needle.head': true,
        'chart.needle.color': 'black',
        'chart.needle.image.url': null,
        'chart.needle.image.offsetx': 0,
        'chart.needle.image.offsety': 0,
        'chart.adjustable': false,
        'chart.angles.start': RGraph.PI,
        'chart.angles.end': RGraph.TWOPI,
        'chart.centerpin.stroke': 'black',
        'chart.centerpin.fill': 'white'
    }


    // Check for support
    if (!this.canvas) {
        alert('[METER] No canvas support');
        return;
    }


    /*
     * Translate half a pixel for antialiasing purposes - but only if it hasn't beeen
     * done already
     */
    if (!this.canvas.__rgraph_aa_translated__) {
        this.context.translate(0.5, 0.5);

        this.canvas.__rgraph_aa_translated__ = true;
    }


    // Short variable names
    var RG = RGraph;
    var ca = this.canvas;
    var co = ca.getContext('2d');
    var prop = this.properties;
    var jq = jQuery;
    var pa = RG.Path;
    var win = window;
    var doc = document;
    var ma = Math;


    /**
     * "Decorate" the object with the generic effects if the effects library has been included
     */
    if (RG.Effects && typeof RG.Effects.decorate === 'function') {
        RG.Effects.decorate(this);
    }


    /**
     * A setter
     *
     * @param name  string The name of the property to set
     * @param value mixed  The value of the property
     */
    this.set =
        this.Set = function (name) {
            var value = arguments[1] || null;

            /**
             * the number of arguments is only one and it's an
             * object - parse it for configuration data and return.
             */
            if (arguments.length === 1 && typeof name === 'object') {
                RG.parseObjectStyleConfig(this, name);
                return this;
            }


            name = name.toLowerCase();

            /**
             * This should be done first - prepend the propertyy name with "chart." if necessary
             */
            if (name.substr(0, 6) != 'chart.') {
                name = 'chart.' + name;
            }

            if (name == 'chart.value') {
                this.value = value;
                return;
            }

            prop[name] = value;

            return this;
        };


    /**
     * A getter
     *
     * @param name  string The name of the property to get
     */
    this.get =
        this.Get = function (name) {
            /**
             * This should be done first - prepend the property name with "chart." if necessary
             */
            if (name.substr(0, 6) != 'chart.') {
                name = 'chart.' + name;
            }

            if (name == 'chart.value') {
                return this.value;
            }

            return prop[name];
        };


    /**
     * The function you call to draw the bar chart
     */
    this.draw =
        this.Draw = function () {
            /**
             * Fire the onbeforedraw event
             */
            RG.FireCustomEvent(this, 'onbeforedraw');

            /**
             * Constrain the value to be within the min and max
             */
            if (this.value > this.max) this.value = this.max;
            if (this.value < this.min) this.value = this.min;

            /**
             * Set the current value
             */
            this.currentValue = this.value;

            /**
             * This is new in May 2011 and facilitates indiviual gutter settings,
             * eg chart.gutter.left
             */
            this.gutterLeft = prop['chart.gutter.left'];
            this.gutterRight = prop['chart.gutter.right'];
            this.gutterTop = prop['chart.gutter.top'];
            this.gutterBottom = prop['chart.gutter.bottom'];

            this.centerx = ((ca.width - this.gutterLeft - this.gutterRight) / 2) + this.gutterLeft;
            this.centery = ca.height - this.gutterBottom;
            this.radius = Math.min(
                (ca.width - this.gutterLeft - this.gutterRight) / 2,
                (ca.height - this.gutterTop - this.gutterBottom)
            );

            /**
             * Stop this growing uncontrollably
             */
            this.coordsText = [];


            /**
             * Custom centerx, centery and radius
             */
            if (typeof(prop['chart.centerx']) == 'number') this.centerx = prop['chart.centerx'];
            if (typeof(prop['chart.centery']) == 'number') this.centery = prop['chart.centery'];
            if (typeof(prop['chart.radius']) == 'number')  this.radius = prop['chart.radius'];


            /**
             * Parse the colors for gradients. Its down here so that the center X/Y can be used
             */
            if (!this.colorsParsed) {

                this.parseColors();

                // Don't want to do this again
                this.colorsParsed = true;
            }


            this.drawBackground();
            this.drawLabels();
            this.drawNeedle();
            this.drawReadout();

            /**
             * Draw the title
             */
            RG.DrawTitle(this, prop['chart.title'], this.gutterTop, null, prop['chart.title.size'] ? prop['chart.title.size'] : prop['chart.text.size'] + 2);

            /**
             * Setup the context menu if required
             */
            if (prop['chart.contextmenu']) {
                RG.ShowContext(this);
            }


            /**
             * This function enables resizing
             */
            if (prop['chart.resizable']) {
                RG.AllowResizing(this);
            }


            /**
             * This installs the event listeners
             */
            RG.InstallEventListeners(this);


            /**
             * Fire the onfirstdraw event
             */
            if (this.firstDraw) {
                RG.fireCustomEvent(this, 'onfirstdraw');
                this.firstDraw = false;
                this.firstDrawFunc();
            }


            /**
             * Fire the RGraph ondraw event
             */
            RG.FireCustomEvent(this, 'ondraw');


            return this;
        };


    /**
     * Draws the background of the chart
     */
    this.drawBackground =
        this.DrawBackground = function () {
            /**
             * First draw the background image if it's defined
             */
            if (typeof prop['chart.background.image.url'] === 'string' && !this.__background_image__) {

                var x = 0 + prop['chart.background.image.offsetx'];
                var y = 0 + prop['chart.background.image.offsety'];
                var img = new Image();

                this.__background_image__ = img;
                img.src = prop['chart.background.image.url'];

                img.onload = function () {
                    if (prop['chart.background.image.stretch']) {
                        co.drawImage(this, x, y, ca.width, ca.height);
                    } else {
                        co.drawImage(this, x, y);
                    }
                    RG.redraw();
                }

            } else if (this.__background_image__) {

                var x = 0 + prop['chart.background.image.offsetx'];
                var y = 0 + prop['chart.background.image.offsety'];

                if (prop['chart.background.image.stretch']) {
                    co.drawImage(this.__background_image__, x, y, ca.width, ca.height);
                } else {
                    co.drawImage(this.__background_image__, x, y);
                }
            }


            /**
             * Draw the white background
             */
            co.beginPath();

            co.fillStyle = prop['chart.background.color'];

            if (prop['chart.shadow']) {
                RG.SetShadow(this, prop['chart.shadow.color'], prop['chart.shadow.offsetx'], prop['chart.shadow.offsety'], prop['chart.shadow.blur']);
            }
            co.moveTo(this.centerx, this.centery);
            co.arc(this.centerx,
                this.centery,
                this.radius,
                prop['chart.angles.start'],
                prop['chart.angles.end'],
                false);

            co.fill();

            RG.NoShadow(this);


            // Draw the shadow
            if (prop['chart.shadow']) {

                co.beginPath();
                var r = (this.radius * 0.06) > 40 ? 40 : (this.radius * 0.06);
                co.arc(this.centerx, this.centery, r, 0, RG.TWOPI, 0);
                co.fill();

                RG.NoShadow(this);
            }


            // First, draw the grey tickmarks
            if (prop['chart.tickmarks.small.num']) {
                for (var i = 0; i < (prop['chart.angles.end'] - prop['chart.angles.start']); i += (RG.PI / prop['chart.tickmarks.small.num'])) {
                    co.beginPath();
                    co.strokeStyle = prop['chart.tickmarks.small.color'];
                    co.arc(this.centerx, this.centery, this.radius, prop['chart.angles.start'] + i, prop['chart.angles.start'] + i + 0.00001, 0);
                    co.arc(this.centerx, this.centery, this.radius - 5, prop['chart.angles.start'] + i, prop['chart.angles.start'] + i + 0.00001, 0);
                    co.stroke();
                }

                // Draw the semi-circle that makes the tickmarks
                co.beginPath();
                co.fillStyle = prop['chart.background.color'];
                co.arc(this.centerx, this.centery, this.radius - 4, prop['chart.angles.start'], prop['chart.angles.end'], false);
                co.closePath();
                co.fill();
            }


            // Second, draw the darker tickmarks. First run draws them in white to get rid of the existing tickmark,
            // then the second run draws them in the requested color


            if (prop['chart.tickmarks.big.num']) {
                var colors = ['white', 'white', prop['chart.tickmarks.big.color']];
                for (var j = 0; j < colors.length; ++j) {
                    for (var i = 0; i < (prop['chart.angles.end'] - prop['chart.angles.start']); i += ((prop['chart.angles.end'] - prop['chart.angles.start']) / prop['chart.tickmarks.big.num'])) {
                        co.beginPath();
                        co.strokeStyle = colors[j];
                        co.arc(this.centerx, this.centery, this.radius, prop['chart.angles.start'] + i, prop['chart.angles.start'] + i + 0.001, 0);
                        co.arc(this.centerx, this.centery, this.radius - 5, prop['chart.angles.start'] + i, prop['chart.angles.start'] + i + 0.0001, 0);
                        co.stroke();
                    }
                }
            }

            // Draw the white circle that makes the tickmarks
            co.beginPath();
            co.fillStyle = prop['chart.background.color'];
            co.moveTo(this.centerx, this.centery);
            co.arc(this.centerx, this.centery, this.radius - 7, prop['chart.angles.start'], prop['chart.angles.end'], false);
            co.closePath();
            co.fill();

            /**
             * Color ranges - either green/yellow/red or an arbitrary number of ranges
             */
            var ranges = prop['chart.colors.ranges'];

            if (RG.is_array(prop['chart.colors.ranges'])) {

                var ranges = prop['chart.colors.ranges'];

                for (var i = 0; i < ranges.length; ++i) {

                    co.strokeStyle = prop['chart.strokestyle'] ? prop['chart.strokestyle'] : ranges[i][2];
                    co.fillStyle = ranges[i][2];
                    co.lineWidth = prop['chart.linewidth.segments'];

                    co.beginPath();
                    co.arc(this.centerx,
                        this.centery,
                        this.radius * 0.85,
                        (((ranges[i][0] - this.min) / (this.max - this.min)) * (prop['chart.angles.end'] - prop['chart.angles.start'])) + prop['chart.angles.start'],
                        (((ranges[i][1] - this.min) / (this.max - this.min)) * (prop['chart.angles.end'] - prop['chart.angles.start'])) + prop['chart.angles.start'],
                        false);

                    if (prop['chart.segment.radius.start'] > 0) {
                        co.arc(this.centerx,
                            this.centery,
                            prop['chart.segment.radius.start'],
                            (((ranges[i][1] - this.min) / (this.max - this.min)) * (prop['chart.angles.end'] - prop['chart.angles.start'])) + prop['chart.angles.start'],
                            (((ranges[i][0] - this.min) / (this.max - this.min)) * (prop['chart.angles.end'] - prop['chart.angles.start'])) + prop['chart.angles.start'],
                            true);
                    } else {
                        co.lineTo(this.centerx, this.centery);
                    }

                    co.closePath();
                    co.stroke();
                    co.fill();
                }

                // Stops the last line from being changed to a big linewidth.
                co.beginPath();

            } else {
                co.lineWidth = prop['chart.linewidth'];

                // Draw the green area
                co.strokeStyle = prop['chart.strokestyle'] ? prop['chart.strokestyle'] : prop['chart.green.color'];
                co.fillStyle = prop['chart.green.color'];
                co.lineWidth = prop['chart.linewidth.segments'];

                co.beginPath();
                co.arc(this.centerx,
                    this.centery,
                    this.radius * 0.85,
                    (((prop['chart.green.start'] - this.min) / (this.max - this.min)) * (prop['chart.angles.end'] - this.properties['chart.angles.start'])) + prop['chart.angles.start'],
                    (((prop['chart.green.end'] - this.min) / (this.max - this.min)) * (prop['chart.angles.end'] - prop['chart.angles.start'])) + prop['chart.angles.start'],
                    false);

                if (prop['chart.segment.radius.start'] > 0) {

                    co.arc(this.centerx,
                        this.centery,
                        prop['chart.segment.radius.start'],
                        (((prop['chart.green.end'] - this.min) / (this.max - this.min)) * (prop['chart.angles.end'] - prop['chart.angles.start'])) + prop['chart.angles.start'],
                        (((prop['chart.green.start'] - this.min) / (this.max - this.min)) * (prop['chart.angles.end'] - prop['chart.angles.start'])) + prop['chart.angles.start'],
                        true);
                } else {
                    co.lineTo(this.centerx, this.centery);
                }

                co.closePath();
                co.stroke();
                co.fill();

                // Draw the yellow area
                co.strokeStyle = prop['chart.strokestyle'] ? prop['chart.strokestyle'] : prop['chart.yellow.color'];
                co.fillStyle = prop['chart.yellow.color'];
                co.lineWidth = prop['chart.linewidth.segments'];
                co.beginPath();
                co.arc(this.centerx,
                    this.centery,
                    this.radius * 0.85,
                    (((prop['chart.yellow.start'] - this.min) / (this.max - this.min)) * (prop['chart.angles.end'] - prop['chart.angles.start'])) + prop['chart.angles.start'],
                    (((prop['chart.yellow.end'] - this.min) / (this.max - this.min)) * (prop['chart.angles.end'] - prop['chart.angles.start'])) + prop['chart.angles.start'],
                    false);

                if (prop['chart.segment.radius.start'] > 0) {
                    co.arc(this.centerx,
                        this.centery,
                        prop['chart.segment.radius.start'],
                        (((prop['chart.yellow.end'] - this.min) / (this.max - this.min)) * (prop['chart.angles.end'] - prop['chart.angles.start'])) + prop['chart.angles.start'],
                        (((prop['chart.yellow.start'] - this.min) / (this.max - this.min)) * (prop['chart.angles.end'] - prop['chart.angles.start'])) + prop['chart.angles.start'],
                        true);
                } else {
                    co.lineTo(this.centerx, this.centery);
                }

                co.closePath();
                co.stroke();
                co.fill();

                // Draw the red area
                co.strokeStyle = prop['chart.strokestyle'] ? prop['chart.strokestyle'] : prop['chart.red.color'];
                co.fillStyle = prop['chart.red.color'];
                co.lineWidth = prop['chart.linewidth.segments'];

                co.beginPath();
                co.arc(this.centerx,
                    this.centery, this.radius * 0.85,
                    (((prop['chart.red.start'] - this.min) / (this.max - this.min)) * (prop['chart.angles.end'] - prop['chart.angles.start'])) + prop['chart.angles.start'],
                    (((prop['chart.red.end'] - this.min) / (this.max - this.min)) * (prop['chart.angles.end'] - prop['chart.angles.start'])) + prop['chart.angles.start'],
                    false);

                if (prop['chart.segment.radius.start'] > 0) {
                    co.arc(this.centerx,
                        this.centery,
                        prop['chart.segment.radius.start'],
                        (((prop['chart.red.end'] - this.min) / (this.max - this.min)) * (prop['chart.angles.end'] - prop['chart.angles.start'])) + prop['chart.angles.start'],
                        (((prop['chart.red.start'] - this.min) / (this.max - this.min)) * (prop['chart.angles.end'] - prop['chart.angles.start'])) + prop['chart.angles.start'],
                        true);
                } else {
                    co.lineTo(this.centerx, this.centery);
                }

                co.closePath();
                co.stroke();
                co.fill();

                // Revert the linewidth
                co.lineWidth = 1;
            }

            // Draw the outline
            if (prop['chart.border']) {
                co.strokeStyle = prop['chart.border.color'];
                co.lineWidth = prop['chart.linewidth'];

                co.beginPath();
                co.moveTo(this.centerx, this.centery);
                co.arc(this.centerx,
                    this.centery,
                    this.radius,
                    prop['chart.angles.start'],
                    prop['chart.angles.end'],
                    false);
                co.closePath();
            }

            co.stroke();

            // Reset the linewidth back to 1
            co.lineWidth = 1;
        };


    /**
     * Draws the pointer
     */
    this.drawNeedle =
        this.DrawNeedle = function () {
            /**
             * The angle that the needle is at
             */
            var a = (((this.value - this.min) / (this.max - this.min)) * (prop['chart.angles.end'] - prop['chart.angles.start'])) + prop['chart.angles.start'];

            /**
             * First draw the background image if it's defined
             */
            if (typeof prop['chart.needle.image.url'] === 'string' && !this.__needle_image__) {

                var img = new Image();

                this.__needle_image__ = img;
                img.src = prop['chart.needle.image.url'];

                img.onload = function () {
                    co.save();
                    RG.rotateCanvas(ca, this.centerx, this.centery, a);
                    co.drawImage(this,
                        this.centerx + prop['chart.needle.image.offsetx'],
                        this.centery + prop['chart.needle.image.offsety']);
                    co.restore();

                    RG.redraw();
                }

            } else if (this.__needle_image__) {

                co.save();
                RG.rotateCanvas(ca, this.centerx, this.centery, a);
                co.drawImage(this.__needle_image__,
                    this.centerx + prop['chart.needle.image.offsetx'],
                    this.centery + prop['chart.needle.image.offsety']);
//pa(co, ['b', 'r', this.centerx, this.centery, 1, 1, 'f', 'red']);
                co.restore();
            }


            // Allow customising the needle radius
            var needleRadius = typeof(prop['chart.needle.radius']) == 'number' ? prop['chart.needle.radius'] : this.radius * 0.7;

            // First draw the circle at the bottom
            co.fillStyle = 'black';
            co.lineWidth = this.radius >= 200 ? 7 : 3;
            co.lineCap = 'round';

            // Now, draw the arm of the needle
            co.beginPath();
            co.strokeStyle = prop['chart.needle.color'];
            if (typeof(prop['chart.needle.linewidth']) == 'number') co.lineWidth = prop['chart.needle.linewidth'];


            co.arc(this.centerx, this.centery, needleRadius, a, a + 0.001, false);
            co.lineTo(this.centerx, this.centery);
            co.stroke();

            // Draw the triangular needle head
            if (prop['chart.needle.head']) {

                co.fillStyle = prop['chart.needle.color'];
                co.beginPath();
                co.lineWidth = 1;
                //co.moveTo(this.centerx, this.centery);
                co.arc(this.centerx, this.centery, needleRadius + 15, a, a + 0.001, 0);
                co.arc(this.centerx, this.centery, needleRadius - 15, a + 0.087, a + 0.087999, 0);
                co.arc(this.centerx, this.centery, needleRadius - 15, a - 0.087, a - 0.087999, 1);
                co.fill();
            }

            // Draw the tail if requested
            if (prop['chart.needle.tail']) {
                co.beginPath();
                co.strokeStyle = prop['chart.needle.color'];
                if (typeof(prop['chart.needle.linewidth']) == 'number') co.lineWidth = prop['chart.needle.linewidth'];

                var a = ((this.value - this.min) / (this.max - this.min) * (this.properties['chart.angles.end'] - this.properties['chart.angles.start'])) + this.properties['chart.angles.start'] + RG.PI;
                co.arc(this.centerx, this.centery, 25, a, a + 0.001, false);
                co.lineTo(this.centerx, this.centery);
                co.stroke();
            }

            // Draw the center circle (the stroke)
            var r = (this.radius * 0.06) > 40 ? 40 : (this.radius * 0.06);

            co.beginPath();
            co.fillStyle = prop['chart.centerpin.stroke'];
            co.arc(this.centerx, this.centery, r, 0 + 0.001, RG.TWOPI, 0);
            co.fill();


            // Draw the centre bit of the circle (the fill)
            co.fillStyle = prop['chart.centerpin.fill'];
            co.beginPath();
            co.arc(this.centerx, this.centery, r - 2, 0 + 0.001, RG.TWOPI, 0);
            co.fill();
        };


    /**
     * Draws the labels
     */
    this.drawLabels =
        this.DrawLabels = function () {
            if (!prop['chart.labels']) {
                return;
            }

            var radius = this.radius;
            var text_size = prop['chart.text.size'];
            var text_font = prop['chart.text.font'];
            var units_post = prop['chart.units.post'];
            var units_pre = prop['chart.units.pre'];
            var centerx = this.centerx;
            var centery = this.centery;
            var min = this.min;
            var max = this.max;
            var decimals = prop['chart.scale.decimals'];
            var numLabels = prop['chart.labels.count'];

            co.fillStyle = prop['chart.text.color'];
            co.lineWidth = 1;

            co.beginPath();

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

                var angle = ((prop['chart.angles.end'] - prop['chart.angles.start']) * (i / numLabels)) + prop['chart.angles.start'];
                var coords = RG.getRadiusEndPoint(centerx, centery, angle + (((i == 0 || i == numLabels) && prop['chart.border']) ? (i == 0 ? 0.05 : -0.05) : 0), (this.radius * 0.925) - (prop['chart.text.valign'] === 'bottom' ? 15 : 0));

                var angleStart = prop['chart.angles.start'];
                var angleEnd = prop['chart.angles.end'];
                var angleRange = angleEnd - angleStart;

                var angleStart_degrees = angleStart * (180 / RG.PI);
                var angleEnd_degrees = angleEnd * (180 / RG.PI);
                var angleRange_degrees = angleRange * (180 / RG.PI);

                // Vertical alignment
                valign = prop['chart.text.valign'];

                // Horizontal alignment
                if (prop['chart.border']) {
                    if (i == 0) {
                        halign = 'left';
                    } else if (i == numLabels) {
                        halign = 'right';
                    } else {
                        halign = 'center'
                    }
                } else {
                    halign = 'center';
                }

                RG.Text2(this, {
                    'font': text_font,
                    'size': text_size,
                    'x': coords[0],
                    'y': coords[1],
                    'text': RG.numberFormat(this, (((this.max - this.min) * (i / numLabels)) + this.min).toFixed(decimals), units_pre, units_post),
                    'halign': halign,
                    'valign': valign,
                    'angle': ((angleRange_degrees * (1 / numLabels) * i) + angleStart_degrees) - 270,
                    'bounding': false,
                    'boundingFill': (i == 0 || i == numLabels) ? 'white' : null,
                    'tag': 'scale'
                });
            }
        };


    /**
     * This function draws the text readout if specified
     */
    this.drawReadout =
        this.DrawReadout = function () {
            if (prop['chart.value.text']) {
                co.beginPath();
                RG.Text2(this, {
                    'font': prop['chart.text.font'],
                    'size': prop['chart.text.size'],
                    'x': this.centerx,
                    'y': this.centery - prop['chart.text.size'] - 15,
                    'text': prop['chart.value.text.units.pre'] + (this.value).toFixed(prop['chart.value.text.decimals']) + prop['chart.value.text.units.post'],
                    'halign': 'center',
                    'valign': 'bottom',
                    'bounding': true,
                    'boundingFill': 'white',
                    'tag': 'value.text'
                });

                co.stroke();
                co.fill();
            }
        };


    /**
     * A placeholder function
     *
     * @param object The event object
     */
    this.getShape = function (e) {
    };


    /**
     * This function returns the pertinent value for a particular click (or other mouse event)
     *
     * @param obj e The event object
     */
    this.getValue = function (e) {
        var mouseXY = RG.getMouseXY(e);
        var angle = RG.getAngleByXY(this.centerx, this.centery, mouseXY[0], mouseXY[1]);

        // Work out the radius
        var radius = RG.getHypLength(this.centerx, this.centery, mouseXY[0], mouseXY[1]);
        if (radius > this.radius) {
            return null;
        }


        if (angle < RG.HALFPI) {
            angle += RG.TWOPI;
        }

        var value = (((angle - prop['chart.angles.start']) / (prop['chart.angles.end'] - prop['chart.angles.start'])) * (this.max - this.min)) + this.min;

        value = Math.max(value, this.min);
        value = Math.min(value, this.max);

        return value;
    };


    /**
     * The getObjectByXY() worker method. Don't call this call:
     *
     * RGraph.ObjectRegistry.getObjectByXY(e)
     *
     * @param object e The event object
     */
    this.getObjectByXY = function (e) {
        var mouseXY = RGraph.getMouseXY(e);

        // Work out the radius
        var radius = RG.getHypLength(this.centerx, this.centery, mouseXY[0], mouseXY[1]);

        if (
            mouseXY[0] > (this.centerx - this.radius)
            && mouseXY[0] < (this.centerx + this.radius)
            && mouseXY[1] > (this.centery - this.radius)
            && mouseXY[1] < (this.centery + this.radius)
            && radius <= this.radius
        ) {

            return this;
        }
    };


    /**
     * This method handles the adjusting calculation for when the mouse is moved
     *
     * @param object e The event object
     */
    this.adjusting_mousemove =
        this.Adjusting_mousemove = function (e) {
            /**
             * Handle adjusting for the Bar
             */
            if (prop['chart.adjustable'] && RG.Registry.Get('chart.adjusting') && RG.Registry.Get('chart.adjusting').uid == this.uid) {
                this.value = this.getValue(e);
                RG.clear(this.canvas);
                RG.redrawCanvas(this.canvas);
                RG.fireCustomEvent(this, 'onadjust');
            }
        };


    /**
     * This method returns the appropriate angle for a value
     *
     * @param number value The value
     */
    this.getAngle = function (value) {
        // Higher than max
        if (value > this.max || value < this.min) {
            return null;
        }

        var angle = (((value - this.min) / (this.max - this.min)) * (prop['chart.angles.end'] - prop['chart.angles.start'])) + prop['chart.angles.start'];

        return angle;
    };


    /**
     * This allows for easy specification of gradients
     */
    this.parseColors = function () {
        // Save the original colors so that they can be restored when the canvas is reset
        if (this.original_colors.length === 0) {
            this.original_colors['chart.green.color'] = RG.array_clone(prop['chart.green.color']);
            this.original_colors['chart.yellow.color'] = RG.array_clone(prop['chart.yellow.color']);
            this.original_colors['chart.red.color'] = RG.array_clone(prop['chart.red.color']);
            this.original_colors['chart.colors.ranges'] = RG.array_clone(prop['chart.colors.ranges']);
        }

        // Parse the basic colors
        prop['chart.green.color'] = this.parseSingleColorForGradient(prop['chart.green.color']);
        prop['chart.yellow.color'] = this.parseSingleColorForGradient(prop['chart.yellow.color']);
        prop['chart.red.color'] = this.parseSingleColorForGradient(prop['chart.red.color']);

        // Parse chart.colors.ranges
        var ranges = prop['chart.colors.ranges'];
        if (ranges && ranges.length) {
            for (var i = 0; i < ranges.length; ++i) {
                ranges[i][2] = this.parseSingleColorForGradient(ranges[i][2]);
            }
        }
    };


    /**
     * Use this function to reset the object to the post-constructor state. Eg reset colors if
     * need be etc
     */
    this.reset = function () {
    };


    /**
     * This parses a single color value
     */
    this.parseSingleColorForGradient = function (color) {
        if (!color || typeof(color) != 'string') {
            return color;
        }

        if (color.match(/^gradient\((.*)\)$/i)) {

            var parts = RegExp.$1.split(':');

            // Create the gradient
            var grad = co.createRadialGradient(this.centerx, this.centery, prop['chart.segment.radius.start'], this.centerx, this.centery, this.radius * 0.85);

            var diff = 1 / (parts.length - 1);

            for (var j = 0; j < parts.length; ++j) {
                grad.addColorStop(j * diff, RG.trim(parts[j]));
            }
        }

        return grad ? grad : color;
    };


    /**
     * Using a function to add events makes it easier to facilitate method chaining
     *
     * @param string   type The type of even to add
     * @param function func
     */
    this.on = function (type, func) {
        if (type.substr(0, 2) !== 'on') {
            type = 'on' + type;
        }

        this[type] = func;

        return this;
    };


    /**
     * This function runs once only
     * (put at the end of the file (before any effects))
     */
    this.firstDrawFunc = function () {
    };


    /**
     * Meter Grow
     *
     * This effect gradually increases the represented value
     *
     * @param              An object of options - eg: {frames: 60}
     * @param function     An optional callback function
     */
    this.grow = function () {
        var obj = this;

        obj.currentValue = obj.currentValue || obj.min;

        var opt = arguments[0] || {};
        var frames = opt.frames || 30;
        var frame = 0;
        var diff = obj.value - obj.currentValue;
        var step = diff / frames;
        var callback = arguments[1] || function () {
            };
        var initial = obj.currentValue;


        function iterator() {
            obj.value = initial + (frame++ * step);

            RG.clear(obj.canvas);
            RG.redrawCanvas(obj.canvas);

            if (frame <= frames) {
                RG.Effects.updateCanvas(iterator);
            } else {
                callback(obj);
            }
        }

        iterator();

        return this;
    };


    /**
     * Register the object
     */
    RG.register(this);


    /**
     * This is the 'end' of the constructor so if the first argument
     * contains configuration data - handle that.
     */
    if (parseConfObjectForOptions) {
        RG.parseObjectStyleConfig(this, conf.options);
    }
};
Anon7 - 2022
AnonSec Team