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Current File : /var/www/html/ouvidoria/pmcrateus/js/RGraph/libraries/RGraph.bipolar.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 bi-polar/age frequency constructor.
 *
 * @param string id The id of the canvas
 * @param array  left  The left set of data points
 * @param array  right The right set of data points
 *
 * REMEMBER If ymin is implemented you need to update the .getValue() method
 */
RGraph.Bipolar = function (conf) {
    /**
     * Allow for object config style
     */
    if (typeof conf === 'object'
        && typeof conf.left === 'object'
        && typeof conf.right === 'object'
        && typeof conf.id === 'string') {

        var id = conf.id
        var canvas = document.getElementById(id);
        var left = conf.left;
        var right = conf.right;
        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 left = arguments[1];
        var right = arguments[2];
    }


    // Get the canvas and context objects
    this.id = id;
    this.canvas = canvas;
    this.context = this.canvas.getContext('2d');
    this.canvas.__object__ = this;
    this.type = 'bipolar';
    this.coords = [];
    this.coordsLeft = [];
    this.coordsRight = [];
    this.max = 0;
    this.isRGraph = true;
    this.uid = RGraph.CreateUID();
    this.canvas.uid = this.canvas.uid ? this.canvas.uid : RGraph.CreateUID();
    this.coordsText = [];
    this.original_colors = [];
    this.firstDraw = true; // After the first draw this will be false


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


        // The left and right data respectively
    this.left = left;
    this.right = right;
    this.data = [left, right];

    this.properties =
    {
        'chart.margin': 2,
        'chart.xtickinterval': null,
        'chart.labels': [],
        'chart.labels.above': false,
        'chart.text.size': 10,
        'chart.text.color': 'black', // (Simple) gradients are not supported
        'chart.text.font': 'Arial',
        'chart.title.left': '',
        'chart.title.right': '',
        'chart.gutter.center': 60,
        'chart.gutter.left': 25,
        'chart.gutter.right': 25,
        'chart.gutter.top': 25,
        'chart.gutter.bottom': 25,
        'chart.title': '',
        'chart.title.background': null,
        'chart.title.hpos': null,
        'chart.title.vpos': null,
        '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.colors': ['#0f0'],
        'chart.contextmenu': null,
        'chart.tooltips': null,
        'chart.tooltips.effect': 'fade',
        'chart.tooltips.css.class': 'RGraph_tooltip',
        'chart.tooltips.highlight': true,
        'chart.tooltips.event': 'onclick',
        'chart.highlight.stroke': 'rgba(0,0,0,0)',
        'chart.highlight.fill': 'rgba(255,255,255,0.7)',
        'chart.units.pre': '',
        'chart.units.post': '',
        'chart.shadow': false,
        'chart.shadow.color': '#666',
        'chart.shadow.offsetx': 3,
        'chart.shadow.offsety': 3,
        'chart.shadow.blur': 3,
        'chart.annotatable': false,
        'chart.annotate.color': 'black',
        'chart.xmax': null,
        'chart.xmin': 0,
        'chart.scale.decimals': null,
        'chart.scale.point': '.',
        'chart.scale.thousand': ',',
        'chart.axis.color': 'black',
        '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.resizable': false,
        'chart.resize.handle.background': null,
        'chart.strokestyle': 'rgba(0,0,0,0)',
        'chart.events.mousemove': null,
        'chart.events.click': null,
        'chart.linewidth': 1,
        'chart.noaxes': false,
        'chart.xlabels': true,
        'chart.numyticks': null,
        'chart.numxticks': 5,
        'chart.axis.linewidth': 1,
        'chart.labels.count': 5
    }

    // Pad the arrays so they're the same size
    while (this.left.length < this.right.length) this.left.push(0);
    while (this.left.length > this.right.length) this.right.push(0);

    /**
     * Set the default for the number of Y tickmarks
     */
    this.properties['chart.numyticks'] = this.left.length;


    /**
     * Create the dollar objects so that functions can be added to them
     */
    var linear_data = RGraph.array_linearize(this.left, this.right);

    for (var i = 0; i < linear_data.length; ++i) {
        this['$' + i] = {};
    }


    /**
     * 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);
    }


    /**
     * The setter
     *
     * @param name  string The name of the parameter to set
     * @param value mixed  The value of the paraneter
     */
    this.set =
        this.Set = function (name) {
            var value = typeof arguments[1] === 'undefined' ? null : arguments[1];

            /**
             * 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;
            }

            prop[name] = value;

            return this;
        };


    /**
     * The getter
     *
     * @param name string The name of the parameter 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;
            }

            return this.properties[name.toLowerCase()];
        };


    /**
     * Draws the graph
     */
    this.draw =
        this.Draw = function () {
            /**
             * Fire the onbeforedraw event
             */
            RG.FireCustomEvent(this, 'onbeforedraw');


            /**
             * Parse the colors. This allows for simple gradient syntax
             */
            if (!this.colorsParsed) {
                this.parseColors();

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


            /**
             * 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'];


            // Reset the data to what was initially supplied
            this.left = this.data[0];
            this.right = this.data[1];

            // Sequential color index
            this.sequentialColorIndex = 0;


            /**
             * Reset the coords array
             */
            this.coords = [];


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


            this.GetMax();
            this.DrawAxes();
            this.DrawTicks();
            this.DrawLeftBars();
            this.DrawRightBars();

            // Redraw the bars so that shadows on not on top
            this.RedrawBars();

            this.DrawAxes();

            this.DrawLabels();
            this.DrawTitles();


            /**
             * 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 axes
     */
    this.drawAxes =
        this.DrawAxes = function () {
            // Set the linewidth
            co.lineWidth = prop['chart.axis.linewidth'] + 0.001;


            // Draw the left set of axes
            co.beginPath();
            co.strokeStyle = prop['chart.axis.color'];

            this.axisWidth = (ca.width - prop['chart.gutter.center'] - this.gutterLeft - this.gutterRight) / 2;
            this.axisHeight = ca.height - this.gutterTop - this.gutterBottom;


            // This must be here so that the two above variables are calculated
            if (prop['chart.noaxes']) {
                return;
            }

            co.moveTo(this.gutterLeft, Math.round(ca.height - this.gutterBottom));
            co.lineTo(this.gutterLeft + this.axisWidth, Math.round(ca.height - this.gutterBottom));

            co.moveTo(Math.round(this.gutterLeft + this.axisWidth), ca.height - this.gutterBottom);
            co.lineTo(Math.round(this.gutterLeft + this.axisWidth), this.gutterTop);

            co.stroke();


            // Draw the right set of axes
            co.beginPath();

            var x = this.gutterLeft + this.axisWidth + prop['chart.gutter.center'];

            co.moveTo(Math.round(x), this.gutterTop);
            co.lineTo(Math.round(x), ca.height - this.gutterBottom);

            co.moveTo(Math.round(x), Math.round(ca.height - this.gutterBottom));
            co.lineTo(ca.width - this.gutterRight, Math.round(ca.height - this.gutterBottom));

            co.stroke();
        };


    /**
     * Draws the tick marks on the axes
     */
    this.drawTicks =
        this.DrawTicks = function () {
            // Set the linewidth
            co.lineWidth = prop['chart.axis.linewidth'] + 0.001;

            var numDataPoints = this.left.length;
            var barHeight = ( (ca.height - this.gutterTop - this.gutterBottom) - (this.left.length * (prop['chart.margin'] * 2) )) / numDataPoints;

            // Store this for later
            this.barHeight = barHeight;

            // If no axes - no tickmarks
            if (prop['chart.noaxes']) {
                return;
            }

            // Draw the left Y tick marks
            if (prop['chart.numyticks'] > 0) {
                co.beginPath();
                for (var i = 0; i < prop['chart.numyticks']; ++i) {
                    var y = prop['chart.gutter.top'] + (((ca.height - this.gutterTop - this.gutterBottom) / prop['chart.numyticks']) * i);
                    co.moveTo(this.gutterLeft + this.axisWidth, y);
                    co.lineTo(this.gutterLeft + this.axisWidth + 3, y);
                }
                co.stroke();

                //Draw the right axis Y tick marks
                co.beginPath();
                for (var i = 0; i < prop['chart.numyticks']; ++i) {
                    var y = prop['chart.gutter.top'] + (((ca.height - this.gutterTop - this.gutterBottom) / prop['chart.numyticks']) * i);
                    co.moveTo(this.gutterLeft + this.axisWidth + prop['chart.gutter.center'], y);
                    co.lineTo(this.gutterLeft + this.axisWidth + prop['chart.gutter.center'] - 3, y);
                }
                co.stroke();
            }


            /**
             * X tickmarks
             */
            if (prop['chart.numxticks'] > 0) {
                var xInterval = this.axisWidth / prop['chart.numxticks'];

                // Is chart.xtickinterval specified ? If so, use that.
                if (typeof(prop['chart.xtickinterval']) == 'number') {
                    xInterval = prop['chart.xtickinterval'];
                }


                // Draw the left sides X tick marks
                for (i = this.gutterLeft; i < (this.gutterLeft + this.axisWidth); i += xInterval) {
                    co.beginPath();
                    co.moveTo(Math.round(i), ca.height - this.gutterBottom);
                    co.lineTo(Math.round(i), (ca.height - this.gutterBottom) + 4);
                    co.closePath();

                    co.stroke();
                }

                // Draw the right sides X tick marks
                var stoppingPoint = ca.width - this.gutterRight;

                for (i = (this.gutterLeft + this.axisWidth + prop['chart.gutter.center'] + xInterval); i <= stoppingPoint; i += xInterval) {
                    co.beginPath();
                    co.moveTo(Math.round(i), ca.height - this.gutterBottom);
                    co.lineTo(Math.round(i), (ca.height - this.gutterBottom) + 4);
                    co.closePath();

                    co.stroke();
                }
            }
        };


    /**
     * Figures out the maximum value, or if defined, uses xmax
     */
    this.getMax =
        this.GetMax = function () {
            var dec = prop['chart.scale.decimals'];

            // chart.xmax defined
            if (prop['chart.xmax']) {

                var max = prop['chart.xmax'];
                var min = prop['chart.xmin'];

                this.scale2 = RG.getScale2(this, {
                    'max': max,
                    'min': min,
                    'strict': true,
                    'scale.thousand': prop['chart.scale.thousand'],
                    'scale.point': prop['chart.scale.point'],
                    'scale.decimals': prop['chart.scale.decimals'],
                    'ylabels.count': prop['chart.labels.count'],
                    'scale.round': prop['chart.scale.round'],
                    'units.pre': prop['chart.units.pre'],
                    'units.post': prop['chart.units.post']
                });
                this.max = this.scale2.max;
                this.min = this.scale2.min;


                /**
                 * Generate the scale ourselves
                 */
            } else {

                var max = Math.max(RG.array_max(this.left), RG.array_max(this.right));

                this.scale2 = RG.getScale2(this, {
                    'max': max,
                    //'strict': true,
                    'min': prop['chart.xmin'],
                    'scale.thousand': prop['chart.scale.thousand'],
                    'scale.point': prop['chart.scale.point'],
                    'scale.decimals': prop['chart.scale.decimals'],
                    'ylabels.count': prop['chart.labels.count'],
                    'scale.round': prop['chart.scale.round'],
                    'units.pre': prop['chart.units.pre'],
                    'units.post': prop['chart.units.post']
                });


                this.max = this.scale2.max;
                this.min = this.scale2.min;
            }

            // Don't need to return it as it is stored in this.max
        };


    /**
     * Function to draw the left hand bars
     */
    this.drawLeftBars =
        this.DrawLeftBars = function () {
            // Set the stroke colour
            co.strokeStyle = prop['chart.strokestyle'];

            // Set the linewidth
            co.lineWidth = prop['chart.linewidth'];

            for (i = 0; i < this.left.length; ++i) {

                /**
                 * Turn on a shadow if requested
                 */
                if (prop['chart.shadow']) {
                    co.shadowColor = prop['chart.shadow.color'];
                    co.shadowBlur = prop['chart.shadow.blur'];
                    co.shadowOffsetX = prop['chart.shadow.offsetx'];
                    co.shadowOffsetY = prop['chart.shadow.offsety'];
                }

                co.beginPath();

                // If chart.colors.sequential is specified - handle that
                if (prop['chart.colors.sequential']) {
                    co.fillStyle = prop['chart.colors'][this.sequentialColorIndex];
                    this.sequentialColorIndex++;

                } else {
                    co.fillStyle = prop['chart.colors'][0];
                }

                /**
                 * Work out the coordinates
                 */

                var width = (( (this.left[i] - this.min) / (this.max - this.min)) * this.axisWidth);

                var coords = [Math.round(this.gutterLeft + this.axisWidth - width),
                    Math.round(this.gutterTop + (i * ( this.axisHeight / this.left.length)) + prop['chart.margin']),
                    width,
                    this.barHeight];

                // Draw the IE shadow if necessary
                if (RG.ISOLD && prop['chart.shadow']) {
                    this.DrawIEShadow(coords);
                }


                if (this.left[i]) {
                    co.strokeRect(coords[0], coords[1], coords[2], coords[3]);
                    co.fillRect(coords[0], coords[1], coords[2], coords[3]);
                }

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

                /**
                 * Add the coordinates to the coords array
                 */
                this.coords.push([coords[0], coords[1], coords[2], coords[3]]);
                this.coordsLeft.push([coords[0], coords[1], coords[2], coords[3]]);
            }

            /**
             * Turn off any shadow
             */
            RG.NoShadow(this);

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


    /**
     * Function to draw the right hand bars
     */
    this.drawRightBars =
        this.DrawRightBars = function () {
            // Set the stroke colour
            co.strokeStyle = prop['chart.strokestyle'];

            // Set the linewidth
            co.lineWidth = prop['chart.linewidth'];

            /**
             * Turn on a shadow if requested
             */
            if (prop['chart.shadow']) {
                co.shadowColor = prop['chart.shadow.color'];
                co.shadowBlur = prop['chart.shadow.blur'];
                co.shadowOffsetX = prop['chart.shadow.offsetx'];
                co.shadowOffsetY = prop['chart.shadow.offsety'];
            }

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

                co.beginPath();

                // If chart.colors.sequential is specified - handle that
                if (prop['chart.colors.sequential']) {
                    co.fillStyle = prop['chart.colors'][this.sequentialColorIndex++];
                } else {
                    co.fillStyle = prop['chart.colors'][0];
                }


                var width = (((this.right[i] - this.min) / (this.max - this.min)) * this.axisWidth);

                var coords = [
                    Math.round(this.gutterLeft + this.axisWidth + prop['chart.gutter.center']),
                    Math.round(prop['chart.margin'] + (i * (this.axisHeight / this.right.length)) + this.gutterTop),
                    width,
                    this.barHeight
                ];

                // Draw the IE shadow if necessary
                if (RG.ISOLD && prop['chart.shadow']) {
                    this.DrawIEShadow(coords);
                }
                if (this.right[i]) {
                    co.strokeRect(Math.round(coords[0]), Math.round(coords[1]), coords[2], coords[3]);
                    co.fillRect(Math.round(coords[0]), Math.round(coords[1]), coords[2], coords[3]);
                }

                co.closePath();

                /**
                 * Add the coordinates to the coords array
                 */
                this.coords.push([coords[0], coords[1], coords[2], coords[3]]);
                this.coordsRight.push([coords[0], coords[1], coords[2], coords[3]]);
            }

            co.stroke();

            /**
             * Turn off any shadow
             */
            RG.NoShadow(this);

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


    /**
     * Draws the titles
     */
    this.drawLabels =
        this.DrawLabels = function () {
            co.fillStyle = prop['chart.text.color'];

            //var labelPoints = new Array();
            var font = prop['chart.text.font'];
            var size = prop['chart.text.size'];
            var labels = prop['chart.labels'];
            var barAreaHeight = ca.height - this.gutterTop - this.gutterBottom;

            for (var i = 0, len = labels.length; i < len; i += 1) {
                RG.Text2(this, {
                    'font': font,
                    'size': size,
                    'x': this.gutterLeft + this.axisWidth + (prop['chart.gutter.center'] / 2),
                    'y': this.gutterTop + ((barAreaHeight / labels.length) * (i)) + ((barAreaHeight / labels.length) / 2),
                    'text': String(labels[i] ? String(labels[i]) : ''),
                    'halign': 'center',
                    'valign': 'center',
                    'marker': false,
                    'tag': 'labels'
                });
            }

            /*
             * OLD STYLE LABELS
             *
             var max = Math.max(this.left.length, this.right.length);

             for (i=0; i<max; ++i) {
             var barAreaHeight = ca.height - this.gutterTop - this.gutterBottom;
             var barHeight     = barAreaHeight / this.left.length;
             var yPos          = (i * barAreaHeight) + this.gutterTop;

             labelPoints.push(this.gutterTop + (i * barHeight) + (barHeight / 2) + 5);
             }

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

             RG.Text2(this, {'font':prop['chart.text.font'],
             'size':prop['chart.text.size'],
             'x':this.gutterLeft + this.axisWidth + (prop['chart.gutter.center'] / 2),
             'y':labelPoints[i],
             'text':String(prop['chart.labels'][i] ? prop['chart.labels'][i] : ''),
             'halign':'center',
             'tag': 'labels'
             });
             }
             */


            if (prop['chart.xlabels']) {

                var grapharea = (ca.width - prop['chart.gutter.center'] - this.gutterLeft - this.gutterRight) / 2;

                // Now draw the X labels for the left hand side
                for (var i = 0; i < this.scale2.labels.length; ++i) {
                    RG.Text2(this, {
                        'font': font,
                        'size': size,
                        'x': this.gutterLeft + ((grapharea / this.scale2.labels.length) * i),
                        'y': ca.height - this.gutterBottom + 3,
                        'text': this.scale2.labels[this.scale2.labels.length - i - 1],
                        'valign': 'top',
                        'halign': 'center',
                        'tag': 'scale'
                    });

                    // Draw the scale for the right hand side
                    RG.Text2(this, {
                        'font': font,
                        'size': size,
                        'x': this.gutterLeft + grapharea + prop['chart.gutter.center'] + ((grapharea / this.scale2.labels.length) * (i + 1)),
                        'y': ca.height - this.gutterBottom + 3,
                        'text': this.scale2.labels[i],
                        'valign': 'top',
                        'halign': 'center',
                        'tag': 'scale'
                    });
                }
            }

            /**
             * Draw above labels
             */
            if (prop['chart.labels.above']) {

                // Draw the left sides above labels
                for (var i = 0; i < this.coordsLeft.length; ++i) {

                    if (typeof(this.left[i]) != 'number') {
                        continue;
                    }

                    var coords = this.coordsLeft[i];
                    RG.Text2(this, {
                        'font': font,
                        'size': size,
                        'x': coords[0] - 5,
                        'y': coords[1] + (coords[3] / 2),
                        'text': RG.number_format(this, this.left[i], prop['chart.units.pre'], prop['chart.units.post']),
                        'valign': 'center',
                        'halign': 'right',
                        'tag': 'labels.above'
                    });
                }

                // Draw the right sides above labels
                for (i = 0; i < this.coordsRight.length; ++i) {

                    if (typeof(this.right[i]) != 'number') {
                        continue;
                    }

                    var coords = this.coordsRight[i];
                    RG.Text2(this, {
                        'font': font,
                        'size': size,
                        'x': coords[0] + coords[2] + 5,
                        'y': coords[1] + (coords[3] / 2),
                        'text': RG.number_format(this, this.right[i], prop['chart.units.pre'], prop['chart.units.post']),
                        'valign': 'center',
                        'halign': 'left',
                        'tag': 'labels.above'
                    });
                }
            }
        };


    /**
     * Draws the titles
     */
    this.drawTitles =
        this.DrawTitles = function () {
            RG.Text2(this, {
                'font': prop['chart.text.font'],
                'size': prop['chart.text.size'],
                'x': this.gutterLeft + 5,
                'y': this.gutterTop - 5,
                'text': String(prop['chart.title.left']),
                'halign': 'left',
                'valign': 'bottom',
                'tag': 'title.left'
            });

            RG.Text2(this, {
                'font': prop['chart.text.font'],
                'size': prop['chart.text.size'],
                'x': ca.width - this.gutterRight - 5,
                'y': this.gutterTop - 5,
                'text': String(prop['chart.title.right']),
                'halign': 'right',
                'valign': 'bottom',
                'tag': 'title.right'
            });


            // Draw the main title for the whole chart
            RG.DrawTitle(this, prop['chart.title'], this.gutterTop, null, prop['chart.title.size'] ? prop['chart.title.size'] : null);
        };


    /**
     * This function is used by MSIE only to manually draw the shadow
     *
     * @param array coords The coords for the bar
     */
    this.drawIEShadow =
        this.DrawIEShadow = function (coords) {
            var prevFillStyle = co.fillStyle;
            var offsetx = prop['chart.shadow.offsetx'];
            var offsety = prop['chart.shadow.offsety'];

            co.lineWidth = prop['chart.linewidth'];
            co.fillStyle = prop['chart.shadow.color'];
            co.beginPath();

            // Draw shadow here
            co.fillRect(coords[0] + offsetx, coords[1] + offsety, coords[2], coords[3]);

            co.fill();

            // Change the fillstyle back to what it was
            co.fillStyle = prevFillStyle;
        }


    /**
     * Returns the appropriate focussed bar coordinates
     *
     * @param e object The event object
     */
    this.getShape =
        this.getBar = function (e) {
            var canvas = this.canvas;
            var context = this.context;
            var mouseCoords = RG.getMouseXY(e);

            /**
             * Loop through the bars determining if the mouse is over a bar
             */
            for (var i = 0; i < this.coords.length; i++) {

                var mouseX = mouseCoords[0];
                var mouseY = mouseCoords[1];
                var left = this.coords[i][0];
                var top = this.coords[i][1];
                var width = this.coords[i][2];
                var height = this.coords[i][3];

                if (mouseX >= left && mouseX <= (left + width) && mouseY >= top && mouseY <= (top + height)) {

                    var tooltip = RG.parseTooltipText(prop['chart.tooltips'], i);

                    return {
                        0: this, 1: left, 2: top, 3: width, 4: height, 5: i,
                        'object': this, 'x': left, 'y': top, 'width': width, 'height': height, 'index': i, 'tooltip': tooltip
                    };
                }
            }

            return null;
        };


    /**
     * Each object type has its own Highlight() function which highlights the appropriate shape
     *
     * @param object shape The shape to highlight
     */
    this.highlight =
        this.Highlight = function (shape) {
            // Add the new highlight
            RG.Highlight.Rect(this, shape);
        };


    /**
     * When you click on the canvas, this will return the relevant value (if any)
     *
     * REMEMBER This function will need updating if the Bipolar ever gets chart.ymin
     *
     * @param object e The event object
     */
    this.getValue = function (e) {
        var obj = e.target.__object__;
        var mouseXY = RG.getMouseXY(e);
        var mouseX = mouseXY[0];

        /**
         * Left hand side
         */
        if (mouseX > this.gutterLeft && mouseX < ( (ca.width / 2) - (prop['chart.gutter.center'] / 2) )) {
            var value = (mouseX - prop['chart.gutter.left']) / this.axisWidth;
            value = this.max - (value * this.max);
        }

        /**
         * Right hand side
         */
        if (mouseX < (ca.width - this.gutterRight) && mouseX > ( (ca.width / 2) + (prop['chart.gutter.center'] / 2) )) {
            var value = (mouseX - prop['chart.gutter.left'] - this.axisWidth - prop['chart.gutter.center']) / this.axisWidth;
            value = (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 = RG.getMouseXY(e);

        if (
            mouseXY[0] > prop['chart.gutter.left']
            && mouseXY[0] < (ca.width - prop['chart.gutter.right'])
            && mouseXY[1] > prop['chart.gutter.top']
            && mouseXY[1] < (ca.height - prop['chart.gutter.bottom'])
        ) {

            return this;
        }
    };


    /**
     * This function positions a tooltip when it is displayed
     *
     * @param obj object    The chart object
     * @param int x         The X coordinate specified for the tooltip
     * @param int y         The Y coordinate specified for the tooltip
     * @param objec tooltip The tooltips DIV element
     */
    this.positionTooltip = function (obj, x, y, tooltip, idx) {
        var coordX = obj.coords[tooltip.__index__][0];
        var coordY = obj.coords[tooltip.__index__][1];
        var coordW = obj.coords[tooltip.__index__][2];
        var coordH = obj.coords[tooltip.__index__][3];
        var canvasXY = RG.getCanvasXY(obj.canvas);
        var gutterLeft = obj.Get('chart.gutter.left');
        var gutterTop = obj.Get('chart.gutter.top');
        var width = tooltip.offsetWidth;
        var height = tooltip.offsetHeight;

        // Set the top position
        tooltip.style.left = 0;
        tooltip.style.top = canvasXY[1] + coordY - height - 7 + 'px';

        // By default any overflow is hidden
        tooltip.style.overflow = '';

        // The arrow
        var img = new Image();
        img.src = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABEAAAAFCAYAAACjKgd3AAAARUlEQVQYV2NkQAN79+797+RkhC4M5+/bd47B2dmZEVkBCgcmgcsgbAaA9GA1BCSBbhAuA/AagmwQPgMIGgIzCD0M0AMMAEFVIAa6UQgcAAAAAElFTkSuQmCC';
        img.style.position = 'absolute';
        img.id = '__rgraph_tooltip_pointer__';
        img.style.top = (tooltip.offsetHeight - 2) + 'px';
        tooltip.appendChild(img);

        // Reposition the tooltip if at the edges:

        // LEFT edge
        if ((canvasXY[0] + coordX + (coordW / 2) - (width / 2)) < 0) {
            tooltip.style.left = (canvasXY[0] + coordX - (width * 0.1)) + (coordW / 2) + 'px';
            img.style.left = ((width * 0.1) - 8.5) + 'px';

            // RIGHT edge
        } else if ((canvasXY[0] + coordX + width) > doc.body.offsetWidth) {
            tooltip.style.left = canvasXY[0] + coordX - (width * 0.9) + (coordW / 2) + 'px';
            img.style.left = ((width * 0.9) - 8.5) + 'px';

            // Default positioning - CENTERED
        } else {
            tooltip.style.left = (canvasXY[0] + coordX + (coordW / 2) - (width * 0.5)) + 'px';
            img.style.left = ((width * 0.5) - 8.5) + 'px';
        }
    };


    /**
     * Redraw the bar so that the shadow is NOT on top
     */
    this.redrawBars =
        this.RedrawBars = function () {
            var coords = this.coords;
            var len = coords.length;

            // Reset the sequentail color index
            this.sequentialColorIndex = 0;

            co.beginPath();

            // Turn off shadow
            RG.NoShadow(this);

            // Set the stroke color
            co.strokeStyle = prop['chart.strokestyle'];

            // Set the linewidth
            co.lineWidth = prop['chart.linewidth'];

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

                // No redrawing occurs if there is no value
                if (coords[i][2] > 0) {

                    if (prop['chart.colors.sequential']) {
                        co.fillStyle = prop['chart.colors'][this.sequentialColorIndex++];
                    } else {
                        co.fillStyle = prop['chart.colors'][0];
                    }

                    // Draw the bar itself
                    co.strokeRect(coords[i][0], coords[i][1], coords[i][2], coords[i][3]);
                    co.fillRect(coords[i][0], coords[i][1], coords[i][2], coords[i][3]);

                } else {

                    // Even if there's no redrawing - the color index needs incrementing
                    this.sequentialColorIndex++
                }
            }
            co.stroke();
            co.fill();
        };


    /**
     * Returns the X coords for a value. Returns two coords because there are... two scales.
     *
     * @param number value The value to get the coord for
     */
    this.getXCoord = function (value) {
        if (value > this.max || value < 0) {
            return null;
        }

        var ret = [];

        // The offset into the graph area
        var offset = ((value / this.max) * this.axisWidth);

        // Get the coords (one fo each side)
        ret[0] = (this.gutterLeft + this.axisWidth) - offset;
        ret[1] = (ca.width - this.gutterRight - this.axisWidth) + offset;

        return ret;
    };


    /**
     * 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.colors'] = RG.array_clone(prop['chart.colors']);
            this.original_colors['chart.highlight.stroke'] = RG.array_clone(prop['chart.highlight.fill']);
            this.original_colors['chart.highlight.fill'] = RG.array_clone(prop['chart.highlight.fill']);
            this.original_colors['chart.axis.color'] = RG.array_clone(prop['chart.axis.color']);
            this.original_colors['chart.strokestyle'] = RG.array_clone(prop['chart.strokestyle']);
        }

        var props = this.properties;
        var colors = props['chart.colors'];

        for (var i = 0; i < colors.length; ++i) {
            colors[i] = this.parseSingleColorForGradient(colors[i]);
        }

        props['chart.highlight.stroke'] = this.parseSingleColorForGradient(props['chart.highlight.stroke']);
        props['chart.highlight.fill'] = this.parseSingleColorForGradient(props['chart.highlight.fill']);
        props['chart.axis.color'] = this.parseSingleColorForGradient(props['chart.axis.color']);
        props['chart.strokestyle'] = this.parseSingleColorForGradient(props['chart.strokestyle']);
    };


    /**
     * 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.createLinearGradient(prop['chart.gutter.left'], 0, ca.width - prop['chart.gutter.right'], 0);

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

            grad.addColorStop(0, RG.trim(parts[0]));

            for (var j = 1; 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 () {
    };


    /**
     * Objects are now always registered so that when RGraph.Redraw()
     * is called this chart will be redrawn.
     */
    RG.Register(this);


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