se/SE/stuff/RGraph/libraries/RGraph.bar.js

// version: 2014-06-26
    /**
    * o--------------------------------------------------------------------------------o
    * | This file is part of the RGraph package. RGraph is Free Software, licensed     |
    * | under the MIT license - so it's free to use for all purposes. If you want to   |
    * | donate to help keep the project going then you can do so here:                 |
    * |                                                                                |
    * |                             http://www.rgraph.net/donate                       |
    * o--------------------------------------------------------------------------------o
    */

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




    /**
    * The bar chart constructor
    * 
    * @param object canvas The canvas object
    * @param array  data   The chart data
    */
    RGraph.Bar = function (conf)
    {
        /**
        * Allow for object config style
        */
        if (typeof conf === 'object' && typeof conf.data === 'object') {
            var id                        = conf.id
            var canvas                    = document.getElementById(id);
            var data                      = conf.data;
            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 data   = arguments[1];
        }




        // 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                   = 'bar';
        this.max                    = 0;
        this.stackedOrGrouped       = false;
        this.isRGraph               = true;
        this.uid                    = RGraph.CreateUID();
        this.canvas.uid             = this.canvas.uid ? this.canvas.uid : RGraph.CreateUID();
        this.colorsParsed           = false;
        this.original_colors        = [];
        this.cachedBackgroundCanvas = null;
        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.barcolor1':   'rgba(0,0,0,0)',
            'chart.background.barcolor2':   'rgba(0,0,0,0)',
            'chart.background.grid':        true,
            'chart.background.grid.color':  '#ddd',
            'chart.background.grid.width':  1,
            'chart.background.grid.hsize':  20,
            'chart.background.grid.vsize':  20,
            'chart.background.grid.vlines': true,
            'chart.background.grid.hlines': true,
            'chart.background.grid.border': true,
            'chart.background.grid.autofit':true,
            'chart.background.grid.autofit.numhlines': 5,
            'chart.background.grid.autofit.numvlines': 20,
            'chart.background.grid.dashed': false,
            'chart.background.grid.dotted': false,
            'chart.background.image.stretch': true,
            'chart.background.image.x':     null,
            'chart.background.image.y':     null,
            'chart.background.image.w':     null,
            'chart.background.image.h':     null,
            'chart.background.image.align': null,
            'chart.background.color':       null,
            'chart.numyticks':              10,
            'chart.hmargin':                5,
            'chart.hmargin.grouped':        1,
            'chart.strokecolor':            'white',
            'chart.axis.color':             'black',
            'chart.axis.linewidth':         1,
            'chart.gutter.top':             25,
            'chart.gutter.bottom':          25,
            'chart.gutter.left':            25,
            'chart.gutter.right':           25,
            'chart.labels':                 null,
            'chart.labels.ingraph':         null,
            'chart.labels.above':           false,
            'chart.labels.above.decimals':  0,
            'chart.labels.above.size':      null,
            'chart.labels.above.color':     null,
            'chart.labels.above.angle':     null,
            'chart.labels.above.offset':    4,
            'chart.ylabels':                true,
            'chart.ylabels.count':          5,
            'chart.ylabels.inside':         false,
            'chart.xlabels.offset':         0,
            'chart.xaxispos':               'bottom',
            'chart.yaxispos':               'left',
            'chart.text.angle':             0,
            'chart.text.color':             'black', // Gradients aren't supported for this color
            'chart.text.size':              10,
            'chart.text.font':              'Arial',
            'chart.ymin':                   0,
            'chart.ymax':                   null,
            'chart.title':                  '',
            'chart.title.font':             null,
            'chart.title.background':       null, // Gradients aren't supported for this color
            'chart.title.hpos':             null,
            'chart.title.vpos':             null,
            'chart.title.bold':             true,
            'chart.title.xaxis':            '',
            'chart.title.xaxis.bold':       true,
            'chart.title.xaxis.size':       null,
            'chart.title.xaxis.font':       null,
            'chart.title.yaxis':            '',
            'chart.title.yaxis.bold':       true,
            'chart.title.yaxis.size':       null,
            'chart.title.yaxis.font':       null,
            'chart.title.yaxis.color':      null, // Gradients aren't supported for this color
            'chart.title.xaxis.pos':        null,
            'chart.title.yaxis.pos':        null,
            'chart.title.yaxis.x':          null,
            'chart.title.yaxis.y':          null,
            'chart.title.xaxis.x':          null,
            'chart.title.xaxis.y':          null,
            'chart.title.x':                null,
            'chart.title.y':                null,
            'chart.title.halign':           null,
            'chart.title.valign':           null,            
            'chart.colors':                 [
                                             'Gradient(#F9D5C9:#E65F2D:#E65F2D:#E65F2D)',
                                             'Gradient(#F7DCD1:#D4592A:#D4592A:#D4592A)',
                                             'Gradient(#DEE5EA:#B5C3CE:#B5C3CE:#B5C3CE)',
                                             'Gradient(#E5E5E3:#545451:#545451:#545451)',
                                             'Gradient(#F6E5D2:#E9C294:#E9C294:#E9C294)',
                                             'Gradient(#F5EAD3:#D6AA4E:#D6AA4E:#D6AA4E)'
                                            ],
            'chart.colors.sequential':      false,
            'chart.colors.reverse':         false,
            'chart.grouping':               'grouped',
            'chart.variant':                'bar',
            'chart.variant.sketch.verticals': true,
            'chart.shadow':                 true,
            'chart.shadow.color':           '#aaa',  // Gradients aren't supported for this color
            'chart.shadow.offsetx':         0,
            'chart.shadow.offsety':         0,
            'chart.shadow.blur':            15,
            'chart.tooltips':               null,
            'chart.tooltips.effect':        'fade',
            'chart.tooltips.css.class':     'RGraph_tooltip',
            'chart.tooltips.event':         'onclick',
            'chart.tooltips.highlight':     true,
            'chart.highlight.stroke':       'rgba(0,0,0,0)',
            'chart.highlight.fill':         'rgba(255,255,255,0.7)',
            'chart.background.hbars':       null,
            'chart.key':                    null,
            'chart.key.background':         'white',
            'chart.key.position':           'graph',
            'chart.key.shadow':             false,
            'chart.key.shadow.color':       '#666',
            'chart.key.shadow.blur':        3,
            'chart.key.shadow.offsetx':     2,
            'chart.key.shadow.offsety':     2,
            'chart.key.position.gutter.boxed':false,
            'chart.key.position.x':         null,
            'chart.key.position.y':         null,
            'chart.key.interactive':        false,
            'chart.key.interactive.highlight.chart.stroke':'black',
            'chart.key.interactive.highlight.chart.fill':'rgba(255,255,255,0.7)',
            'chart.key.interactive.highlight.label':'rgba(255,0,0,0.2)',
            'chart.key.halign':             'right',
            'chart.key.color.shape':        'square',
            'chart.key.rounded':            true,
            'chart.key.text.size':          10,
            'chart.key.linewidth':          1,
            'chart.key.colors':             null,
            'chart.key.text.color':         'black',
            'chart.contextmenu':            null,
            'chart.units.pre':              '',
            'chart.units.post':             '',
            'chart.scale.decimals':         0,
            'chart.scale.point':            '.',
            'chart.scale.thousand':         ',',
            'chart.crosshairs':             false,
            'chart.crosshairs.color':       '#333',
            'chart.crosshairs.hline':       true,
            'chart.crosshairs.vline':       true,
            'chart.linewidth':              1,
            'chart.annotatable':            false,
            'chart.annotate.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.resizable':              false,
            'chart.resize.handle.background': null,
            'chart.adjustable':             false,
            'chart.noaxes':                 false,
            'chart.noxaxis':                false,
            'chart.noyaxis':                false,
            'chart.events.click':           null,
            'chart.events.mousemove':       null,
            'chart.numxticks':              null,
            'chart.bevel':                  false
        }

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

        /**
        * Determine whether the chart will contain stacked or grouped bars
        */
        for (var i=0; i<data.length; ++i) {
            if (typeof data[i] === 'object' && !RGraph.is_null(data[i])) {
                this.stackedOrGrouped = true;
            }
        }


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

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


        // Store the data
        this.data = data;
        
        // Used to store the coords of the bars
        this.coords     = [];
        this.coords2    = [];
        this.coordsText = [];



        /**
        * This linearises the data. Doing so can make it easier to pull
        * out the appropriate data from tooltips
        */
        this.data_arr = RGraph.array_linearize(this.data);


        /**
        * 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, value)
        {
            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.labels.abovebar') {
                name = 'chart.labels.above';
            }
            
            if (name == 'chart.strokestyle') {
                name = 'chart.strokecolor';
            }
            
            /**
            * Check for xaxispos
            */
            if (name == 'chart.xaxispos' ) {
                if (value != 'bottom' && value != 'center' && value != 'top') {
                    alert('[BAR] (' + this.id + ') chart.xaxispos should be top, center or bottom. Tried to set it to: ' + value + ' Changing it to center');
                    value = 'center';
                }
                
                if (value == 'top') {
                    for (var i=0; i<this.data.length; ++i) {
                        if (typeof(this.data[i]) == 'number' && this.data[i] > 0) {
                            alert('[BAR] The data element with index ' + i + ' should be negative');
                        }
                    }
                }
            }
            
            /**
            * lineWidth doesn't appear to like a zero setting
            */
            if (name.toLowerCase() == 'chart.linewidth' && value == 0) {
                value = 0.0001;
            }
    
            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;
            }
    
            return prop[name];
        };




        /**
        * The function you call to draw the bar chart
        */
        this.draw =
        this.Draw = function ()
        {
            // MUST be the first thing done!
            if (typeof(prop['chart.background.image']) == 'string') {
                RG.DrawBackgroundImage(this);
            }
    
            /**
            * 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'];
    
            // Cache this in a class variable as it's used rather a lot
    
            /**
            * Check for tooltips and alert the user that they're not supported with pyramid charts
            */
            if (   (prop['chart.variant'] == 'pyramid' || prop['chart.variant'] == 'dot')
                && typeof(prop['chart.tooltips']) == 'object'
                && prop['chart.tooltips']
                && prop['chart.tooltips'].length > 0) {
    
                alert('[BAR] (' + this.id + ') Sorry, tooltips are not supported with dot or pyramid charts');
            }
    
            /**
            * Stop the coords arrays from growing uncontrollably
            */
            this.coords     = [];
            this.coords2    = [];
            this.coordsText = [];
    
            /**
            * Work out a few things. They need to be here because they depend on things you can change before you
            * call Draw() but after you instantiate the object
            */
            this.max            = 0;
            this.grapharea      = ca.height - this.gutterTop - this.gutterBottom;
            this.halfgrapharea  = this.grapharea / 2;
            this.halfTextHeight = prop['chart.text.size'] / 2;
    


            // Now draw the background on to the main canvas
            RG.background.Draw(this);

    
    
    
            //If it's a sketch chart variant, draw the axes first
            if (prop['chart.variant'] == 'sketch') {
                this.DrawAxes();
                this.Drawbars();
            } else {
                this.Drawbars();
                this.DrawAxes();
            }
    
            this.DrawLabels();

            
            /**
            * Draw the bevel if required
            */
            if (prop['chart.bevel'] || prop['chart.bevelled']) {
                this.DrawBevel();
            }
    
    
            // Draw the key if necessary
            if (prop['chart.key'] && prop['chart.key'].length) {
                RG.DrawKey(this, prop['chart.key'], prop['chart.colors']);
            }
            
            
            /**
            * Setup the context menu if required
            */
            if (prop['chart.contextmenu']) {
                RG.ShowContext(this);
            }


    
    
            /**
            * Draw "in graph" labels
            */
            if (prop['chart.labels.ingraph']) {
                RG.DrawInGraphLabels(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.firstDrawFunc();
                this.firstDraw = false;
            }


            /**
            * Fire the RGraph ondraw event
            */
            RG.fireCustomEvent(this, 'ondraw');
            
            return this;
        };




        /**
        * Draws the charts axes
        */
        this.drawAxes =
        this.DrawAxes = function ()
        {
            if (prop['chart.noaxes']) {
                return;
            }
    
            var xaxispos = prop['chart.xaxispos'];
            var yaxispos = prop['chart.yaxispos'];
            var isSketch = prop['chart.variant'] == 'sketch';
    
            co.beginPath();
            co.strokeStyle = prop['chart.axis.color'];
            co.lineWidth   = prop['chart.axis.linewidth'] + 0.001;
    

            if (RG.ISSAFARI == -1) {
                co.lineCap = 'square';
            }
    
    
            // Draw the Y axis
            if (prop['chart.noyaxis'] == false) {
                if (yaxispos == 'right') {
                    co.moveTo(ca.width - this.gutterRight + (isSketch ? 3 : 0), this.gutterTop - (isSketch ? 3 : 0));
                    co.lineTo(ca.width - this.gutterRight - (isSketch ? 2 : 0), ca.height - this.gutterBottom + (isSketch ? 5 : 0));
                } else {
                    co.moveTo(this.gutterLeft - (isSketch ? 2 : 0), this.gutterTop - (isSketch ? 5 : 0));
                    co.lineTo(this.gutterLeft - (isSketch ? 1 : 0), ca.height - this.gutterBottom + (isSketch ? 5 : 0));
                }
            }
            
            // Draw the X axis
            if (prop['chart.noxaxis'] == false) {
                if (xaxispos == 'center') {
                    co.moveTo(this.gutterLeft - (isSketch ? 5 : 0), Math.round(((ca.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop + (isSketch ? 2 : 0)));
                    co.lineTo(ca.width - this.gutterRight + (isSketch ? 5 : 0), Math.round(((ca.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop - (isSketch ? 2 : 0)));
                } else if (xaxispos == 'top') {
                    co.moveTo(this.gutterLeft - (isSketch ? 3 : 0), this.gutterTop - (isSketch ? 3 : 0));
                    co.lineTo(ca.width - this.gutterRight + (isSketch ? 5 : 0), this.gutterTop + (isSketch ? 2 : 0));
                } else {
                    co.moveTo(this.gutterLeft - (isSketch ? 5 : 0), ca.height - this.gutterBottom - (isSketch ? 2 : 0));
                    co.lineTo(ca.width - this.gutterRight + (isSketch ? 8 : 0), ca.height - this.gutterBottom + (isSketch ? 2 : 0));
                }
            }
    
            var numYTicks = prop['chart.numyticks'];
    
            // Draw the Y tickmarks
            if (prop['chart.noyaxis'] == false && !isSketch) {
                var yTickGap = (ca.height - this.gutterTop - this.gutterBottom) / numYTicks;
                var xpos     = yaxispos == 'left' ? this.gutterLeft : ca.width - this.gutterRight;
    
                if (this.properties['chart.numyticks'] > 0) {
                    for (y=this.gutterTop;
                         xaxispos == 'center' ? y <= (ca.height - this.gutterBottom) : y < (ca.height - this.gutterBottom + (xaxispos == 'top' ? 1 : 0));
                         y += yTickGap) {
    
                        if (xaxispos == 'center' && y == (this.gutterTop + (this.grapharea / 2))) continue;
                        
                        // X axis at the top
                        if (xaxispos == 'top' && y == this.gutterTop) continue;
    
                        co.moveTo(xpos + (yaxispos == 'left' ? 0 : 0), Math.round(y));
                        co.lineTo(xpos + (yaxispos == 'left' ? -3 : 3), Math.round(y));
                    }
                }
    
                /**
                * If the X axis is not being shown, draw an extra tick
                */
                if (prop['chart.noxaxis']) {
                    if (xaxispos == 'center') {
                        co.moveTo(xpos + (yaxispos == 'left' ? -3 : 3), Math.round(ca.height / 2));
                        co.lineTo(xpos, Math.round(ca.height / 2));
                    } else if (xaxispos == 'top') {
                        co.moveTo(xpos + (yaxispos == 'left' ? -3 : 3), Math.round(this.gutterTop));
                        co.lineTo(xpos, Math.round(this.gutterTop));
                    } else {
                        co.moveTo(xpos + (yaxispos == 'left' ? -3 : 3), Math.round(ca.height - this.gutterBottom));
                        co.lineTo(xpos, Math.round(ca.height - this.gutterBottom));
                    }
                }
            }
    
    
            // Draw the X tickmarks
            if (prop['chart.noxaxis'] == false && !isSketch) {
    
                if (typeof(prop['chart.numxticks']) == 'number') {
                    var xTickGap = (ca.width - this.gutterLeft - this.gutterRight) / prop['chart.numxticks'];
                } else {
                    var xTickGap = (ca.width - this.gutterLeft - this.gutterRight) / this.data.length;
                }
    
                if (xaxispos == 'bottom') {
                    yStart   = ca.height - this.gutterBottom;
                    yEnd     = (ca.height - this.gutterBottom) + 3;
                } else if (xaxispos == 'top') {
                    yStart = this.gutterTop - 3;
                    yEnd   = this.gutterTop;
                } else if (xaxispos == 'center') {
                    yStart = ((ca.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop + 3;
                    yEnd   = ((ca.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop - 3;
                }
                
                yStart = yStart;
                yEnd = yEnd;
                
                //////////////// X TICKS ////////////////
                var noEndXTick = prop['chart.noendxtick'];
    
                for (x=this.gutterLeft + (yaxispos == 'left' ? xTickGap : 0),len=(ca.width - this.gutterRight + (yaxispos == 'left' ? 5 : 0)); x<len; x+=xTickGap) {
    
                    if (yaxispos == 'left' && !noEndXTick && x > this.gutterLeft) {
                        co.moveTo(Math.round(x), yStart);
                        co.lineTo(Math.round(x), yEnd);
                    
                    } else if (yaxispos == 'left' && noEndXTick && x > this.gutterLeft && x < (ca.width - this.gutterRight) ) {
                        co.moveTo(Math.round(x), yStart);
                        co.lineTo(Math.round(x), yEnd);
                    
                    } else if (yaxispos == 'right' && x < (ca.width - this.gutterRight) && !noEndXTick) {
                        co.moveTo(Math.round(x), yStart);
                        co.lineTo(Math.round(x), yEnd);
                    
                    } else if (yaxispos == 'right' && x < (ca.width - this.gutterRight) && x > (this.gutterLeft) && noEndXTick) {
                        co.moveTo(Math.round(x), yStart);
                        co.lineTo(Math.round(x), yEnd);
                    }
                }
                
                if (prop['chart.noyaxis'] || prop['chart.numxticks'] == null) {
                    if (typeof(prop['chart.numxticks']) == 'number' && prop['chart.numxticks'] > 0) {
                        co.moveTo(Math.round(this.gutterLeft), yStart);
                        co.lineTo(Math.round(this.gutterLeft), yEnd);
                    }
                }
        
                //////////////// X TICKS ////////////////
            }
    
            /**
            * If the Y axis is not being shown, draw an extra tick
            */
            if (prop['chart.noyaxis'] && prop['chart.noxaxis'] == false && prop['chart.numxticks'] == null) {
                if (xaxispos == 'center') {
                    co.moveTo(Math.round(this.gutterLeft), (ca.height / 2) - 3);
                    co.lineTo(Math.round(this.gutterLeft), (ca.height / 2) + 3);
                } else {
                    co.moveTo(Math.round(this.gutterLeft), ca.height - this.gutterBottom);
                    co.lineTo(Math.round(this.gutterLeft), ca.height - this.gutterBottom + 3);
                }
            }
    
            co.stroke();
        };
    
    
    
        /**
        * Draws the bars
        */
        this.drawbars =
        this.Drawbars = function ()
        {
            // Variable "caching" so the context can be accessed as a local variable
            //var ca   = this.canvas;
            //var co   = this.context;
            //var prop = this.properties;
    
            co.lineWidth   = prop['chart.linewidth'];
            co.strokeStyle = prop['chart.strokecolor'];
            co.fillStyle   = prop['chart.colors'][0];
            var prevX      = 0;
            var prevY      = 0;
            var decimals   = prop['chart.scale.decimals'];
    
            /**
            * Work out the max value
            */
            if (prop['chart.ymax']) {
    
                this.scale2 = RGraph.getScale2(this, {
                                                    'max':prop['chart.ymax'],
                                                    'strict': true,
                                                    'min':prop['chart.ymin'],
                                                    'scale.thousand':prop['chart.scale.thousand'],
                                                    'scale.point':prop['chart.scale.point'],
                                                    'scale.decimals':prop['chart.scale.decimals'],
                                                    'ylabels.count':prop['chart.ylabels.count'],
                                                    'scale.round':prop['chart.scale.round'],
                                                    'units.pre': prop['chart.units.pre'],
                                                    'units.post': prop['chart.units.post']
                                                   });

            } else {
    
                for (i=0; i<this.data.length; ++i) {
                    if (typeof(this.data[i]) == 'object') {
                        var value = prop['chart.grouping'] == 'grouped' ? Number(RG.array_max(this.data[i], true)) : Number(RG.array_sum(this.data[i]));
    
                    } else {
                        var value = Number(this.data[i]);
                    }
    
                    this.max = Math.max(Math.abs(this.max), Math.abs(value));
                }
    
                this.scale2 = RGraph.getScale2(this, {
                                                    'max':this.max,
                                                    'min':prop['chart.ymin'],
                                                    'scale.thousand':prop['chart.scale.thousand'],
                                                    'scale.point':prop['chart.scale.point'],
                                                    'scale.decimals':prop['chart.scale.decimals'],
                                                    'ylabels.count':prop['chart.ylabels.count'],
                                                    'scale.round':prop['chart.scale.round'],
                                                    'units.pre': prop['chart.units.pre'],
                                                    'units.post': prop['chart.units.post']
                                                   });
                
                this.max = this.scale2.max;    
            }
            /**
            * if the chart is adjustable fix the scale so that it doesn't change.
            */
            if (prop['chart.adjustable'] && !prop['chart.ymax']) {
                this.Set('chart.ymax', this.scale2.max);
            }
    
            /**
            * Draw horizontal bars here
            */
            if (prop['chart.background.hbars'] && prop['chart.background.hbars'].length > 0) {
                RGraph.DrawBars(this);
            }
    
            var variant = prop['chart.variant'];
            
            /**
            * Draw the 3D axes is necessary
            */
            if (variant == '3d') {
                RG.Draw3DAxes(this);
            }
    
            /**
            * Get the variant once, and draw the bars, be they regular, stacked or grouped
            */
            
            // Get these variables outside of the loop
            var xaxispos      = prop['chart.xaxispos'];
            var width         = (ca.width - this.gutterLeft - this.gutterRight ) / this.data.length;
            var orig_height   = height;
            var hmargin       = prop['chart.hmargin'];
            var shadow        = prop['chart.shadow'];
            var shadowColor   = prop['chart.shadow.color'];
            var shadowBlur    = prop['chart.shadow.blur'];
            var shadowOffsetX = prop['chart.shadow.offsetx'];
            var shadowOffsetY = prop['chart.shadow.offsety'];
            var strokeStyle   = prop['chart.strokecolor'];
            var colors        = prop['chart.colors'];
            var sequentialColorIndex = 0;
    
            for (i=0,len=this.data.length; i<len; i+=1) {
    
                // Work out the height
                //The width is up outside the loop
                var height = ((RGraph.array_sum(this.data[i]) < 0 ? RGraph.array_sum(this.data[i]) + this.scale2.min : RGraph.array_sum(this.data[i]) - this.scale2.min) / (this.scale2.max - this.scale2.min) ) * (ca.height - this.gutterTop - this.gutterBottom);
    
                // Half the height if the Y axis is at the center
                if (xaxispos == 'center') {
                    height /= 2;
                }
    
                var x = (i * width) + this.gutterLeft;
                var y = xaxispos == 'center' ? ((ca.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop - height
                                             : ca.height - height - this.gutterBottom;
    
                // xaxispos is top
                if (xaxispos == 'top') {
                    y = this.gutterTop + Math.abs(height);
                }
    
    
                // Account for negative lengths - Some browsers (eg Chrome) don't like a negative value
                if (height < 0) {
                    y += height;
                    height = Math.abs(height);
                }
    
                /**
                * Turn on the shadow if need be
                */
                if (shadow) {
                    co.shadowColor   = shadowColor;
                    co.shadowBlur    = shadowBlur;
                    co.shadowOffsetX = shadowOffsetX;
                    co.shadowOffsetY = shadowOffsetY;
                }

                /**
                * Draw the bar
                */
                co.beginPath();
                    if (typeof(this.data[i]) == 'number') {

                        var barWidth = width - (2 * hmargin);
                        
                        /**
                        * Check for a negative bar width
                        */
                        if (barWidth < 0) {
                            alert('[RGRAPH] Warning: you have a negative bar width. This may be caused by the chart.hmargin being too high or the width of the canvas not being sufficient.');
                        }
    
                        // Set the fill color
                        co.strokeStyle = strokeStyle;
                        co.fillStyle = colors[0];
                        
                        /**
                        * Sequential colors
                        */
                        if (prop['chart.colors.sequential']) {
                            co.fillStyle = colors[i];
                        }

                        if (variant == 'sketch') {
    
                            co.lineCap = 'round';
                            
                            var sketchOffset = 3;
    
                            co.beginPath();
    
                            co.strokeStyle = colors[0];
    
                            /**
                            * Sequential colors
                            */
                            if (prop['chart.colors.sequential']) {
                                co.strokeStyle = colors[i];
                            }
    
                            // Left side
                            co.moveTo(x + hmargin + 2, y + height - 2);
                            co.lineTo(x + hmargin -    1, y - 4);
    
                            // The top
                            co.moveTo(x + hmargin - 3, y + -2 + (this.data[i] < 0 ? height : 0));
                            co.bezierCurveTo(
                                             x + ((hmargin + width) * 0.33),
                                             y + 15 + (this.data[i] < 0 ? height - 10: 0),
                                             x + ((hmargin + width) * 0.66),
                                             y + 5 + (this.data[i] < 0 ? height - 10 : 0),x + hmargin + width + -1, y + 0 + (this.data[i] < 0 ? height : 0)
                                            );
    
    
                            // The right side
                            co.moveTo(x + hmargin + width - 5, y  - 5);
                            co.lineTo(x + hmargin + width - 3, y + height - 3);
    
                            if (prop['chart.variant.sketch.verticals']) {
                                for (var r=0.2; r<=0.8; r+=0.2) {
                                    co.moveTo(x + hmargin + width + (r > 0.4 ? -1 : 3) - (r * width),y - 1);
                                    co.lineTo(x + hmargin + width - (r > 0.4 ? 1 : -1) - (r * width), y + height + (r == 0.2 ? 1 : -2));
                                }
                            }
    
                            co.stroke();
    
                        // Regular bar
                        } else if (variant == 'bar' || variant == '3d' || variant == 'glass' || variant == 'bevel') {

                            if (RGraph.ISOLD && shadow) {
                                this.DrawIEShadow([x + hmargin, y, barWidth, height]);
                            }
                            
                            if (variant == 'glass') {
                                RGraph.filledCurvyRect(co, x + hmargin, y, barWidth, height, 3, this.data[i] > 0, this.data[i] > 0, this.data[i] < 0, this.data[i] < 0);
                                RGraph.strokedCurvyRect(co, x + hmargin, y, barWidth, height, 3, this.data[i] > 0, this.data[i] > 0, this.data[i] < 0, this.data[i] < 0);
                            } else {
                                // On 9th April 2013 these two were swapped around so that the stroke happens SECOND so that any
                                // shadow that is cast by the fill does not overwrite the stroke

                                co.beginPath();
                                co.rect(x + hmargin, y, barWidth, height);
                                co.fill();
                                
                                // Turn the shadow off so that the stroke doesn't cast any "extra" shadow
                                // that would show inside the bar
                                RG.NoShadow(this);
                                
                                co.beginPath();
                                co.rect(x + hmargin, y, barWidth, height);
                                co.stroke();
                            }
    
                            // 3D effect
                            if (variant == '3d') {
    
                                var prevStrokeStyle = co.strokeStyle;
                                var prevFillStyle   = co.fillStyle;
    
                                // Draw the top
                                co.beginPath();
                                    co.moveTo(x + hmargin, y);
                                    co.lineTo(x + hmargin + 10, y - 5);
                                    co.lineTo(x + hmargin + 10 + barWidth, y - 5);
                                    co.lineTo(x + hmargin + barWidth, y);
                                co.closePath();
    
                                co.stroke();
                                co.fill();
    
                                // Draw the right hand side
                                co.beginPath();
                                    co.moveTo(x + hmargin + barWidth, y);
                                    co.lineTo(x + hmargin + barWidth + 10, y - 5);
                                    co.lineTo(x + hmargin + barWidth + 10, y + height - 5);
                                    co.lineTo(x + hmargin + barWidth, y + height);
                                co.closePath();
        
                                co.stroke();                        
                                co.fill();
    
                                // Draw the darker top section
                                co.beginPath();                            
                                    co.fillStyle = 'rgba(255,255,255,0.3)';
                                    co.moveTo(x + hmargin, y);
                                    co.lineTo(x + hmargin + 10, y - 5);
                                    co.lineTo(x + hmargin + 10 + barWidth, y - 5);
                                    co.lineTo(x + hmargin + barWidth, y);
                                    co.lineTo(x + hmargin, y);
                                co.closePath();
        
                                co.stroke();
                                co.fill();
    
                                // Draw the darker right side section
                                co.beginPath();
                                    co.fillStyle = 'rgba(0,0,0,0.4)';
                                    co.moveTo(x + hmargin + barWidth, y);
                                    co.lineTo(x + hmargin + barWidth + 10, y - 5);
                                    co.lineTo(x + hmargin + barWidth + 10, y - 5 + height);
                                    co.lineTo(x + hmargin + barWidth, y + height);
                                    co.lineTo(x + hmargin + barWidth, y);
                                co.closePath();
    
                                co.stroke();
                                co.fill();
    
                                co.strokeStyle = prevStrokeStyle;
                                co.fillStyle   = prevFillStyle;
                            
                            // Glass variant
                            } else if (variant == 'glass') {
     
                                var grad = co.createLinearGradient(x + hmargin,y,x + hmargin + (barWidth / 2),y);
                                grad.addColorStop(0, 'rgba(255,255,255,0.9)');
                                grad.addColorStop(1, 'rgba(255,255,255,0.5)');
    
                                co.beginPath();
                                co.fillStyle = grad;
                                co.fillRect(x + hmargin + 2,y + (this.data[i] > 0 ? 2 : 0),(barWidth / 2) - 2,height - 2);
                                co.fill();
                            }

    
                        // Dot chart
                        } else if (variant == 'dot') {
    
                            co.beginPath();
                            co.moveTo(x + (width / 2), y);
                            co.lineTo(x + (width / 2), y + height);
                            co.stroke();
                            
                            co.beginPath();
                            co.fillStyle = this.properties['chart.colors'][i];
                            co.arc(x + (width / 2), y + (this.data[i] > 0 ? 0 : height), 2, 0, 6.28, 0);
                            
                            // Set the colour for the dots
                            co.fillStyle = prop['chart.colors'][0];
    
                            /**
                            * Sequential colors
                            */
                            if (prop['chart.colors.sequential']) {
                                co.fillStyle = colors[i];
                            }
    
                            co.stroke();
                            co.fill();

    
    
                        // Unknown variant type
                        } else {
                            alert('[BAR] Warning! Unknown chart.variant: ' + variant);
                        }

                        this.coords.push([x + hmargin, y, width - (2 * hmargin), height]);
    
                            if (typeof this.coords2[i] == 'undefined') {
                                this.coords2[i] = [];
                            }
                            this.coords2[i].push([x + hmargin, y, width - (2 * hmargin), height]);
    
    
                    /**
                    * Stacked bar
                    */
                    } else if (this.data[i] && typeof(this.data[i]) == 'object' && prop['chart.grouping'] == 'stacked') {
                    
                        if (this.scale2.min) {
                            alert("[ERROR] Stacked Bar charts with a Y min are not supported");
                        }
                        
                        var barWidth     = width - (2 * hmargin);
                        var redrawCoords = [];// Necessary to draw if the shadow is enabled
                        var startY       = 0;
                        var dataset      = this.data[i];
                        
                        /**
                        * Check for a negative bar width
                        */
                        if (barWidth < 0) {
                            alert('[RGRAPH] Warning: you have a negative bar width. This may be caused by the chart.hmargin being too high or the width of the canvas not being sufficient.');
                        }
    
                        for (j=0; j<dataset.length; ++j) {
    
                            // Stacked bar chart and X axis pos in the middle - poitless since negative values are not permitted
                            if (xaxispos == 'center') {
                                alert("[BAR] It's pointless having the X axis position at the center on a stacked bar chart.");
                                return;
                            }
    
                            // Negative values not permitted for the stacked chart
                            if (this.data[i][j] < 0) {
                                alert('[BAR] Negative values are not permitted with a stacked bar chart. Try a grouped one instead.');
                                return;
                            }
    
                            /**
                            * Set the fill and stroke colors
                            */
                            co.strokeStyle = strokeStyle
                            co.fillStyle = colors[j];
        
                            if (prop['chart.colors.reverse']) {
                                co.fillStyle = colors[this.data[i].length - j - 1];
                            }
                            
                            if (prop['chart.colors.sequential'] && colors[sequentialColorIndex]) {
                                co.fillStyle = colors[sequentialColorIndex++];
                            } else if (prop['chart.colors.sequential']) {
                                co.fillStyle = colors[sequentialColorIndex - 1];
                            }
    
                            var height = (dataset[j] / this.scale2.max) * (ca.height - this.gutterTop - this.gutterBottom );

                            // If the X axis pos is in the center, we need to half the  height
                            if (xaxispos == 'center') {
                                height /= 2;
                            }
    
                            var totalHeight = (RGraph.array_sum(dataset) / this.scale2.max) * (ca.height - hmargin - this.gutterTop - this.gutterBottom);
    
                            /**
                            * Store the coords for tooltips
                            */
                            this.coords.push([x + hmargin, y, width - (2 * hmargin), height]);
                            if (typeof this.coords2[i] == 'undefined') {
                                this.coords2[i] = [];
                            }
                            this.coords2[i].push([x + hmargin, y, width - (2 * hmargin), height]);
    
                            // MSIE shadow
                            if (RGraph.ISOLD && shadow) {
                                this.DrawIEShadow([x + hmargin, y, width - (2 * hmargin), height + 1]);
                            }
    
                            if (height > 0) {
                                co.strokeRect(x + hmargin, y, width - (2 * hmargin), height);
                                co.fillRect(x + hmargin, y, width - (2 * hmargin), height);
                            }

                            
                            if (j == 0) {
                                var startY = y;
                                var startX = x;
                            }
    
                            /**
                            * Store the redraw coords if the shadow is enabled
                            */
                            if (shadow) {
                                redrawCoords.push([x + hmargin, y, width - (2 * hmargin), height, co.fillStyle]);
                            }
    
                            /**
                            * Stacked 3D effect
                            */
                            if (variant == '3d') {
    
                                var prevFillStyle = co.fillStyle;
                                var prevStrokeStyle = co.strokeStyle;
    
        
                                // Draw the top side
                                if (j == 0) {
                                    co.beginPath();
                                        co.moveTo(startX + hmargin, y);
                                        co.lineTo(startX + 10 + hmargin, y - 5);
                                        co.lineTo(startX + 10 + barWidth + hmargin, y - 5);
                                        co.lineTo(startX + barWidth + hmargin, y);
                                    co.closePath();
                                    
                                    co.fill();
                                    co.stroke();
                                }
    
                                // Draw the side section
                                co.beginPath();
                                    co.moveTo(startX + barWidth + hmargin, y);
                                    co.lineTo(startX + barWidth + hmargin + 10, y - 5);
                                    co.lineTo(startX + barWidth + hmargin + 10, y - 5 + height);
                                    co.lineTo(startX + barWidth + hmargin , y + height);
                                co.closePath();
                                
                                co.fill();
                                co.stroke();
    
                                // Draw the darker top side
                                if (j == 0) {
                                    co.fillStyle = 'rgba(255,255,255,0.3)';
                                    co.beginPath();
                                        co.moveTo(startX + hmargin, y);
                                        co.lineTo(startX + 10 + hmargin, y - 5);
                                        co.lineTo(startX + 10 + barWidth + hmargin, y - 5);
                                        co.lineTo(startX + barWidth + hmargin, y);
                                    co.closePath();
                                    
                                    co.fill();
                                    co.stroke();
                                }
    
                                // Draw the darker side section
                                co.fillStyle = 'rgba(0,0,0,0.4)';
                                co.beginPath();
                                    co.moveTo(startX + barWidth + hmargin, y);
                                    co.lineTo(startX + barWidth + hmargin + 10, y - 5);
                                    co.lineTo(startX + barWidth + hmargin + 10, y - 5 + height);
                                    co.lineTo(startX + barWidth + hmargin , y + height);
                                co.closePath();
                                
                                co.fill();
                                co.stroke();
    
                                co.strokeStyle = prevStrokeStyle;
                                co.fillStyle = prevFillStyle;
                            }
    
                            y += height;
                        }

                        
    
                        /**
                        * Redraw the bars if the shadow is enabled due to hem being drawn from the bottom up, and the
                        * shadow spilling over to higher up bars
                        */
                        if (shadow) {
    
                            RGraph.NoShadow(this);
    
                            for (k=0; k<redrawCoords.length; ++k) {
                                co.strokeStyle = strokeStyle;
                                co.fillStyle = redrawCoords[k][4];
                                co.strokeRect(redrawCoords[k][0], redrawCoords[k][1], redrawCoords[k][2], redrawCoords[k][3]);
                                co.fillRect(redrawCoords[k][0], redrawCoords[k][1], redrawCoords[k][2], redrawCoords[k][3]);
    
                                co.stroke();
                                co.fill();
                            }
                            
                            // Reset the redraw coords to be empty
                            redrawCoords = [];
                        }

                    /**
                    * Grouped bar
                    */
                    } else if (this.data[i] && typeof(this.data[i]) == 'object' && prop['chart.grouping'] == 'grouped') {
    
                        var redrawCoords = [];
                        co.lineWidth = prop['chart.linewidth'];
    
                        for (j=0; j<this.data[i].length; ++j) {
    
                            // Set the fill and stroke colors
                            co.strokeStyle = strokeStyle;
                            co.fillStyle   = colors[j];
                            
                            /**
                            * Sequential colors
                            */
                            if (prop['chart.colors.sequential'] && colors[sequentialColorIndex]) {
                                co.fillStyle = colors[sequentialColorIndex++];
                            } else if (prop['chart.colors.sequential']) {
                                co.fillStyle = colors[sequentialColorIndex - 1];
                            }
    
                            var individualBarWidth = (width - (2 * hmargin)) / this.data[i].length;
                            var height = ((this.data[i][j] + (this.data[i][j] < 0 ? this.scale2.min : (-1 * this.scale2.min) )) / (this.scale2.max - this.scale2.min) ) * (ca.height - this.gutterTop - this.gutterBottom );
                            var groupedMargin = prop['chart.hmargin.grouped'];
                            var startX = x + hmargin + (j * individualBarWidth);
    
                            /**
                            * Check for a negative bar width
                            */
                            if (individualBarWidth < 0) {
                                alert('[RGRAPH] Warning: you have a negative bar width. This may be caused by the chart.hmargin being too high or the width of the canvas not being sufficient.');
                            }
    
                            // If the X axis pos is in the center, we need to half the  height
                            if (xaxispos == 'center') {
                                height /= 2;
                            }
    
                            /**
                            * Determine the start positioning for the bar
                            */
                            if (xaxispos == 'top') {
                                var startY = this.gutterTop;
                                var height = Math.abs(height);
    
                            } else if (xaxispos == 'center') {
                                var startY = this.gutterTop + (this.grapharea / 2) - height;
    
                            } else {
                                var startY = ca.height - this.gutterBottom - height;
                                var height = Math.abs(height);
                            }
    
                            /**
                            * Draw MSIE shadow
                            */
                            if (RGraph.ISOLD && shadow) {
                                this.DrawIEShadow([startX, startY, individualBarWidth, height]);
                            }
    
                            co.strokeRect(startX + groupedMargin, startY, individualBarWidth - (2 * groupedMargin), height);
                            co.fillRect(startX + groupedMargin, startY, individualBarWidth - (2 * groupedMargin), height);
                            y += height;
    
    
    
                            /**
                            * Grouped 3D effect
                            */
                            if (variant == '3d') {
                                var prevFillStyle = co.fillStyle;
                                var prevStrokeStyle = co.strokeStyle;
                                
                                // Draw the top side
                                co.beginPath();
                                    co.moveTo(startX, startY);
                                    co.lineTo(startX + 10, startY - 5);
                                    co.lineTo(startX + 10 + individualBarWidth, startY - 5);
                                    co.lineTo(startX + individualBarWidth, startY);
                                co.closePath();
                                
                                co.fill();
                                co.stroke();
                                
                                // Draw the side section
                                co.beginPath();
                                    co.moveTo(startX + individualBarWidth, startY);
                                    co.lineTo(startX + individualBarWidth + 10, startY - 5);
                                    co.lineTo(startX + individualBarWidth + 10, startY - 5 + height);
                                    co.lineTo(startX + individualBarWidth , startY + height);
                                co.closePath();
                                
                                co.fill();
                                co.stroke();
    
    
                                // Draw the darker top side
                                co.fillStyle = 'rgba(255,255,255,0.3)';
                                co.beginPath();
                                    co.moveTo(startX, startY);
                                    co.lineTo(startX + 10, startY - 5);
                                    co.lineTo(startX + 10 + individualBarWidth, startY - 5);
                                    co.lineTo(startX + individualBarWidth, startY);
                                co.closePath();
                                
                                co.fill();
                                co.stroke();
                                
                                // Draw the darker side section
                                co.fillStyle = 'rgba(0,0,0,0.4)';
                                co.beginPath();
                                    co.moveTo(startX + individualBarWidth, startY);
                                    co.lineTo(startX + individualBarWidth + 10, startY - 5);
                                    co.lineTo(startX + individualBarWidth + 10, startY - 5 + height);
                                    co.lineTo(startX + individualBarWidth , startY + height);
                                co.closePath();
                                
                                co.fill();
                                co.stroke();
    
                                co.strokeStyle = prevStrokeStyle;
                                co.fillStyle   = prevFillStyle;
                            }
                            
                            if (height < 0) {
                                height = Math.abs(height);
                                startY = startY - height;
                            }
    
                            this.coords.push([startX + groupedMargin, startY, individualBarWidth - (2 * groupedMargin), height]);
                            if (typeof this.coords2[i] == 'undefined') {
                                this.coords2[i] = [];
                            }

                            this.coords2[i].push([startX + groupedMargin, startY, individualBarWidth - (2 * groupedMargin), height]);
    
                            // Facilitate shadows going to the left
                            if (prop['chart.shadow']) {
                                redrawCoords.push([startX + groupedMargin, startY, individualBarWidth - (2 * groupedMargin), height, co.fillStyle]);
                            }
                        }







                        /**
                        * Redraw the bar if shadows are going to the left
                        */
                        if (redrawCoords.length) {
    
                            RGraph.NoShadow(this);
                            
                            co.lineWidth = prop['chart.linewidth'];
    
                            co.beginPath();
                                for (var j=0; j<redrawCoords.length; ++j) {
    
                                    co.fillStyle   = redrawCoords[j][4];
                                    co.strokeStyle = prop['chart.strokecolor'];
    
                                    co.fillRect(redrawCoords[j][0], redrawCoords[j][1], redrawCoords[j][2], redrawCoords[j][3]);
                                    co.strokeRect(redrawCoords[j][0], redrawCoords[j][1], redrawCoords[j][2], redrawCoords[j][3]);
                                }
                            co.fill();
                            co.stroke();
    
                            redrawCoords = [];
                        }
                    } else {
                        this.coords.push([]);
                    }
    
                co.closePath();
            }
    
            /**
            * Turn off any shadow
            */
            RGraph.NoShadow(this);
        };
    
    
    
        /**
        * Draws the labels for the graph
        */
        this.drawLabels =
        this.DrawLabels = function ()
        {
            // Variable "caching" so the context can be accessed as a local variable
            // TODO Doesn't really need to be done as the variables come from the constructor
            var ca      = this.canvas;
            var co      = this.context;
            var prop    = this.properties;
            var context = co;
    
            var text_angle = prop['chart.text.angle'];
            var text_size  = prop['chart.text.size'];
            var labels     = prop['chart.labels'];
    
    
            // Draw the Y axis labels:
            if (prop['chart.ylabels']) {
                if (prop['chart.xaxispos'] == 'top')    this.Drawlabels_top();
                if (prop['chart.xaxispos'] == 'center') this.Drawlabels_center();
                if (prop['chart.xaxispos'] == 'bottom') this.Drawlabels_bottom();
            }
    
            /**
            * The X axis labels
            */
            if (typeof(labels) == 'object' && labels) {
    
                var yOffset = Number(prop['chart.xlabels.offset']);
    
                /**
                * Text angle
                */
                if (prop['chart.text.angle'] != 0) {
                    var valign =  'center';
                    var halign =  'right';
                    var angle  = 0 - prop['chart.text.angle'];
                } else {
                    var valign =  'top';
                    var halign =  'center';
                    var angle  = 0;
                }
    
                // Draw the X axis labels
                co.fillStyle = prop['chart.text.color'];
                
                // How wide is each bar
                var barWidth = (ca.width - this.gutterRight - this.gutterLeft) / labels.length;
                
                // Reset the xTickGap
                xTickGap = (ca.width - this.gutterRight - this.gutterLeft) / labels.length
    
                // Draw the X tickmarks
                var i=0;
                var font = prop['chart.text.font'];
    
                for (x=this.gutterLeft + (xTickGap / 2); x<=ca.width - this.gutterRight; x+=xTickGap) {
    
                    RGraph.Text2(this, {'font': font,
                                        'size': text_size,
                                           'x': x,
                                           'y': prop['chart.xaxispos'] == 'top' ? this.gutterTop - yOffset - 5: (ca.height - this.gutterBottom) + yOffset + 3,
                                        'text': String(labels[i++]),
                                      'valign': prop['chart.xaxispos'] == 'top' ? 'bottom' : valign,
                                      'halign': halign,
                                        'tag':'label',
                                        'marker':false,
                                        'angle':angle,
                                        'tag': 'labels'
                                       });
                }
            }
            
            /**
            * Draw above labels
            */
            this.drawAboveLabels();
        };
    
    
    
        /**
        * Draws the X axis at the top
        */
        this.drawlabels_top =
        this.Drawlabels_top = function ()
        {
            var ca   = this.canvas;
            var co   = this.context;
            var prop = this.properties;
    
            co.beginPath();
            co.fillStyle   = prop['chart.text.color'];
            co.strokeStyle = 'black';
    
            if (prop['chart.xaxispos'] == 'top') {
    
                var context    = co;
                var text_size  = prop['chart.text.size'];
                var units_pre  = prop['chart.units.pre'];
                var units_post = prop['chart.units.post'];
                var align      = prop['chart.yaxispos'] == 'left' ? 'right' : 'left';
                var font       = prop['chart.text.font'];
                var numYLabels = prop['chart.ylabels.count'];
                var ymin       = prop['chart.ymin'];
    
                if (prop['chart.ylabels.inside'] == true) {
                    var xpos  = prop['chart.yaxispos'] == 'left' ? this.gutterLeft + 5 : ca.width - this.gutterRight - 5;
                    var align = prop['chart.yaxispos'] == 'left' ? 'left' : 'right';
                    var boxed = true;
                } else {
                    var xpos  = prop['chart.yaxispos'] == 'left' ? this.gutterLeft - 5 : ca.width - this.gutterRight + 5;
                    var boxed = false;
                }
                
                /**
                * Draw specific Y labels here so that the local variables can be reused
                */
                if (typeof(prop['chart.ylabels.specific']) == 'object' && prop['chart.ylabels.specific']) {
                    
                    var labels = RGraph.array_reverse(prop['chart.ylabels.specific']);
                    var grapharea = ca.height - this.gutterTop - this.gutterBottom;
    
                    for (var i=0; i<labels.length; ++i) {
                        
                        var y = this.gutterTop + (grapharea * (i / labels.length)) + (grapharea / labels.length);
    
                        RGraph.Text2(this, {'font': font,
                                            'size': text_size,
                                            'x': xpos,
                                            'y': y,
                                            'text': String(labels[i]),
                                            'valign': 'center',
                                            'halign': align,
                                            'bordered':boxed,
                                            'tag': 'scale'
                                           });
                    }
    
                    return;
                }
    
    
    
    
    
    
    
                /**
                * Draw the scale
                */
                var labels = this.scale2.labels;
                for (var i=0; i<labels.length; ++i) {
                    RGraph.Text2(this, {'font': font,
                                        'size':text_size,
                                        'x':xpos,
                                        'y':this.gutterTop + ((this.grapharea / labels.length) * (i + 1)),
                                        'text': '-' + labels[i],
                                        'valign': 'center',
                                        'halign': align,
                                        'bordered': boxed,
                                        'tag':'scale'});
                }
    
    
    
    
    
    
    
    
                /**
                * Show the minimum value if its not zero
                */
                if (prop['chart.ymin'] != 0 || prop['chart.noxaxis'] || prop['chart.scale.zerostart']) {
    
                    RGraph.Text2(this, {'font': font,
                                        'size': text_size,
                                           'x': xpos,
                                           'y': this.gutterTop,
                                        'text': (this.scale2.min != 0 ? '-' : '') + RGraph.number_format(this,(this.scale2.min.toFixed((prop['chart.scale.decimals']))), units_pre, units_post),
                                      'valign': 'center',
                                      'halign': align,
                                    'bordered': boxed,
                                        'tag': 'scale'});
                }
    
            }
            
            co.fill();
        };
    
    
    
        /**
        * Draws the X axis in the middle
        */
        this.drawlabels_center =
        this.Drawlabels_center = function ()
        {
            var ca   = this.canvas;
            var co   = this.context;
            var prop = this.properties;
    
            var font       = prop['chart.text.font'];
            var numYLabels = prop['chart.ylabels.count'];
    
            co.fillStyle = prop['chart.text.color'];
    
            if (prop['chart.xaxispos'] == 'center') {
    
                /**
                * Draw the top labels
                */
                var text_size  = prop['chart.text.size'];
                var units_pre  = prop['chart.units.pre'];
                var units_post = prop['chart.units.post'];
                var context = co;
                var align   = '';
                var xpos    = 0;
                var boxed   = false;
                var ymin    = prop['chart.ymin'];
    
                co.fillStyle   = prop['chart.text.color'];
                co.strokeStyle = 'black';
    
                if (prop['chart.ylabels.inside'] == true) {
                    var xpos  = prop['chart.yaxispos'] == 'left' ? this.gutterLeft + 5 : ca.width - this.gutterRight - 5;
                    var align = prop['chart.yaxispos'] == 'left' ? 'left' : 'right';
                    var boxed = true;
                } else {
                    var xpos  = prop['chart.yaxispos'] == 'left' ? this.gutterLeft - 5 : ca.width - this.gutterRight + 5;
                    var align = prop['chart.yaxispos'] == 'left' ? 'right' : 'left';
                    var boxed = false;
                }
    
    
    
    
    
    
    
    
    
    
    
    
                /**
                * Draw specific Y labels here so that the local variables can be reused
                */
                if (typeof(prop['chart.ylabels.specific']) == 'object' && prop['chart.ylabels.specific']) {
    
                    var labels    = prop['chart.ylabels.specific'];
                    var grapharea = ca.height - this.gutterTop - this.gutterBottom;
    
                    // Draw the top halves labels
                    for (var i=0; i<labels.length; ++i) {
    
                        var y = this.gutterTop + ((grapharea / 2) / (labels.length - 1)) * i;
    
                        RGraph.Text2(this, {'font':font,
                                            'size':text_size,
                                            'x':xpos,
                                            'y':y,
                                            'text':String(labels[i]),
                                            'valign':'center',
                                            'halign':align,
                                            'bordered':boxed,
                                            'tag': 'scale'
                                           });
                    }
    
                    // Draw the bottom halves labels
                    for (var i=labels.length-1; i>=1; --i) {
                        
                        var y = this.gutterTop  + (grapharea * (i / ((labels.length - 1) * 2) )) + (grapharea / 2);
    
                        RG.Text2(this, {'font':font,
                                            'size':text_size,
                                            'x':xpos,
                                            'y':y,
                                            'text':String(labels[labels.length - i - 1]),
                                            'valign':'center',
                                            'halign':align,
                                            'bordered':boxed,
                                            'tag': 'scale'
                                           });
                    }
    
                    return;
                }
    
    
    
    
    
    
    
    
    
    
                /**
                * Draw the top halfs labels
                */
                for (var i=0; i<this.scale2.labels.length; ++i) {
                    var y    = this.gutterTop + this.halfgrapharea - ((this.halfgrapharea / numYLabels) * (i + 1));
                    var text = this.scale2.labels[i];
                    RG.Text2(this, {'font':font, 'size':text_size, 'x':xpos, 'y':y, 'text': text, 'valign':'center', 'halign': align, 'bordered': boxed, 'tag':'scale'});
                }
                
                /**
                * Draw the bottom halfs labels
                */
                for (var i=(this.scale2.labels.length - 1); i>=0; --i) {
                    var y = this.gutterTop + ((this.halfgrapharea / numYLabels) * (i + 1)) + this.halfgrapharea;
                    var text = this.scale2.labels[i];
                    RG.Text2(this, {'font':font, 'size':text_size,'x':xpos,'y':y,'text': '-' + text,'valign':'center','halign': align,'bordered': boxed,'tag':'scale'});
                }
    
    
    
    
    
                /**
                * Show the minimum value if its not zero
                */
                if (this.scale2.min != 0 || prop['chart.scale.zerostart']) {
                    RG.Text2(this, {'font':font,'size':text_size, 'x':xpos, 'y':this.gutterTop + this.halfgrapharea,'text': RGraph.number_format(this,(this.scale2.min.toFixed((prop['chart.scale.decimals']))), units_pre, units_post),'valign':'center', 'valign':'center','halign': align, 'bordered': boxed, 'tag':'scale'});
                }
            }
        };
    
    
    
    
        /**
        * Draws the X axdis at the bottom (the default)
        */
        this.drawlabels_bottom =
        this.Drawlabels_bottom = function ()
        {
            var co   = this.context;
            var ca   = this.canvas;
            var prop = this.properties;
    
            var text_size  = prop['chart.text.size'];
            var units_pre  = prop['chart.units.pre'];
            var units_post = prop['chart.units.post'];
            var context    = this.context;
            var align      = prop['chart.yaxispos'] == 'left' ? 'right' : 'left';
            var font       = prop['chart.text.font'];
            var numYLabels = prop['chart.ylabels.count'];
            var ymin       = prop['chart.ymin'];
    
            co.beginPath();
            co.fillStyle = prop['chart.text.color'];
            co.strokeStyle = 'black';
    
            if (prop['chart.ylabels.inside'] == true) {
                var xpos  = prop['chart.yaxispos'] == 'left' ? this.gutterLeft + 5 : ca.width - this.gutterRight - 5;
                var align = prop['chart.yaxispos'] == 'left' ? 'left' : 'right';
                var boxed = true;
            } else {
                var xpos  = prop['chart.yaxispos'] == 'left' ? this.gutterLeft - 5 : ca.width - this.gutterRight + 5;
                var boxed = false;
            }
    
            /**
            * Draw specific Y labels here so that the local variables can be reused
            */
            if (prop['chart.ylabels.specific'] && typeof(prop['chart.ylabels.specific']) == 'object') {
    
                var labels = prop['chart.ylabels.specific'];
                var grapharea = ca.height - this.gutterTop - this.gutterBottom;
    
                for (var i=0; i<labels.length; ++i) {
                    var y = this.gutterTop + (grapharea * (i / (labels.length - 1)));
    
                    RGraph.Text2(this, {'font':font,
                                        'size':text_size,
                                        'x':xpos,
                                        'y':y,
                                        'text': labels[i],
                                        'valign':'center',
                                        'halign': align,
                                        'bordered': boxed,
                                        'tag':'scale'
                                       });
                }
    
                return;
            }
    
            var gutterTop      = this.gutterTop;
            var halfTextHeight = this.halfTextHeight;
            var scale          = this.scale;
    
    
            for (var i=0; i<numYLabels; ++i) {
                var text = this.scale2.labels[i];
                RGraph.Text2(this, {'font':font,
                                    'size':text_size,
                                    'x':xpos,
                                    'y':this.gutterTop + this.grapharea - ((this.grapharea / numYLabels) * (i+1)),
                                    'text': text,
                                    'valign':'center',
                                    'halign': align,
                                    'bordered': boxed,
                                    'tag':'scale'});
            }
    
            
            /**
            * Show the minimum value if its not zero
            */
            if (prop['chart.ymin'] != 0 || prop['chart.noxaxis'] || prop['chart.scale.zerostart']) {
                RG.Text2(this, {'font':font,
                                'size':text_size,
                                'x':xpos,
                                'y':ca.height - this.gutterBottom,
                                'text': RG.number_format(this,(this.scale2.min.toFixed((prop['chart.scale.decimals']))), units_pre, units_post),
                                'valign':'center',
                                'halign': align,
                                'bordered': boxed,
                                'tag':'scale'});
            }
            
            co.fill();
        };
    
    
        /**
        * 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 co   = this.context;
            var ca   = this.canvas;
            var prop = this.properties;
    
            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;
        };
    
    
        /**
        * Not used by the class during creating the graph, but is used by event handlers
        * to get the coordinates (if any) of the selected bar
        * 
        * @param object e The event object
        * @param object   OPTIONAL You can pass in the bar object instead of the
        *                          function using "this"
        */
        this.getShape = 
        this.getBar = function (e)
        {
            // This facilitates you being able to pass in the bar object as a parameter instead of
            // the function getting it from itself
            var obj = arguments[1] ? arguments[1] : this;
    
            var mouseXY = RGraph.getMouseXY(e);
            var mouseX  = mouseXY[0];
            var mouseY  = mouseXY[1];  
            var canvas  = obj.canvas;
            var context = obj.context;
            var coords  = obj.coords

            for (var i=0,len=coords.length; i<len; i+=1) {
            
                if (obj.coords[i].length == 0) {
                    continue;
                }

                var left   = coords[i][0];
                var top    = coords[i][1];
                var width  = coords[i][2];
                var height = coords[i][3];
                var prop   = obj.properties;
    
                if (mouseX >= left && mouseX <= (left + width) && mouseY >= top && mouseY <= (top + height)) {


                    if (prop['chart.tooltips']) {
                        var tooltip = RGraph.parseTooltipText ? RGraph.parseTooltipText(prop['chart.tooltips'], i) : prop['chart.tooltips'][i];
                    }
    
                    // Work out the dataset
                    var dataset = 0;
                    var idx = i;

                    while (idx >=  (typeof(obj.data[dataset]) == 'object' && obj.data[dataset] ? obj.data[dataset].length : 1)) {

                        if (typeof(obj.data[dataset]) == 'number') {
                            idx -= 1;
                        } else if (obj.data[dataset]) { // Accounts for null being an object
                            idx -= obj.data[dataset].length;
                        } else {
                            idx -= 1;
                        }

                        dataset++;
                    }

                    if (typeof(obj.data[dataset]) == 'number') {
                        idx = null;
                    }
    
    
                    return {
                            0: obj, 1: left, 2: top, 3: width, 4: height, 5: i,
                            'object': obj, 'x': left, 'y': top, 'width': width, 'height': height, 'index': i, 'tooltip': tooltip, 'index_adjusted': idx, 'dataset': dataset
                           };
                }
            }
            
            return null;
        };




        /**
        * This retrives the bar based on the X coordinate only.
        * 
        * @param object e The event object
        * @param object   OPTIONAL You can pass in the bar object instead of the
        *                          function using "this"
        */
        this.getShapeByX = function (e)
        {
            var canvas      = e.target;
            var mouseCoords = RGraph.getMouseXY(e);
    
    
            // This facilitates you being able to pass in the bar object as a parameter instead of
            // the function getting it from itself
            var obj = arguments[1] ? arguments[1] : this;
    
    
            /**
            * Loop through the bars determining if the mouse is over a bar
            */
            for (var i=0,len=obj.coords.length; i<len; i++) {

                if (obj.coords[i].length == 0) {
                    continue;
                }

                var mouseX = mouseCoords[0];
                var mouseY = mouseCoords[1];    
                var left   = obj.coords[i][0];
                var top    = obj.coords[i][1];
                var width  = obj.coords[i][2];
                var height = obj.coords[i][3];
                var prop   = obj.properties;
    
                if (mouseX >= left && mouseX <= (left + width)) {
                
                    if (prop['chart.tooltips']) {
                        var tooltip = RGraph.parseTooltipText ? RGraph.parseTooltipText(prop['chart.tooltips'], i) : prop['chart.tooltips'][i];
                    }

    
    
                    return {
                            0: obj, 1: left, 2: top, 3: width, 4: height, 5: i,
                            'object': obj, 'x': left, 'y': top, 'width': width, 'height': height, 'index': i, 'tooltip': tooltip
                           };
                }
            }
            
            return null;
        };
    
    
        /**
        * When you click on the chart, this method can return the Y value at that point. It works for any point on the
        * chart (that is inside the gutters) - not just points within the Bars.
        * 
        * EITHER:
        * 
        * @param object arg The event object
        * 
        * OR:
        * 
        * @param object arg A two element array containing the X and Y coordinates
        */
        this.getValue = function (arg)
        {
            var co   = this.context;
            var ca   = this.canvas;
            var prop = this.properties;
    
            if (arg.length == 2) {
                var mouseX = arg[0];
                var mouseY = arg[1];
            } else {
                var mouseCoords = RGraph.getMouseXY(arg);
                var mouseX      = mouseCoords[0];
                var mouseY      = mouseCoords[1];
            }
    
            if (   mouseY < prop['chart.gutter.top']
                || mouseY > (ca.height - prop['chart.gutter.bottom'])
                || mouseX < prop['chart.gutter.left']
                || mouseX > (ca.width - prop['chart.gutter.right'])
               ) {
                return null;
            }
            
            if (prop['chart.xaxispos'] == 'center') {
                var value = (((this.grapharea / 2) - (mouseY - prop['chart.gutter.top'])) / this.grapharea) * (this.scale2.max - this.scale2.min)
                value *= 2;
                
                if (value >= 0) {
                    value += this.scale2.min;
                } else {
                    value -= this.scale2.min;
                }
    
            } else if (prop['chart.xaxispos'] == 'top') {
                var value = ((this.grapharea - (mouseY - prop['chart.gutter.top'])) / this.grapharea) * (this.scale2.max - this.scale2.min)
                value = this.scale2.max - value;
                value = Math.abs(value) * -1;
            } else {
                var value = ((this.grapharea - (mouseY - prop['chart.gutter.top'])) / this.grapharea) * (this.scale2.max - this.scale2.min)
                value += this.scale2.min;
            }
    
            return value;
        };
    
    
        /**
        * This function can be used when the canvas is clicked on (or similar - depending on the event)
        * to retrieve the relevant Y coordinate for a particular value.
        * 
        * @param int value The value to get the Y coordinate for
        */
        this.getYCoord = function (value)
        {
            if (value > this.scale2.max) {
                return null;
            }
    
            var co   = this.context;
            var ca   = this.canvas;
            var prop = this.properties;
    
            var y;
            var xaxispos = prop['chart.xaxispos'];
    
            if (xaxispos == 'top') {
            
                // Account for negative numbers
                if (value < 0) {
                    value = Math.abs(value);
                }
    
                y = ((value - this.scale2.min) / (this.scale2.max - this.scale2.min)) * this.grapharea;
                y = y + this.gutterTop
    
            } else if (xaxispos == 'center') {
    
                y = ((value - this.scale2.min) / (this.scale2.max - this.scale2.min)) * (this.grapharea / 2);
                y = (this.grapharea / 2) - y;
                y += this.gutterTop;
    
            } else {
    
                if (value < this.scale2.min) {
                    value = this.scale2.min;
                }
    
                y = ((value - this.scale2.min) / (this.scale2.max - this.scale2.min)) * this.grapharea;
    
                y = ca.height - this.gutterBottom - y;
            }
            
            return y;
        };
    
    
    
        /**
        * 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
            RGraph.Highlight.Rect(this, shape);
        };
    
    
    
        /**
        * The getObjectByXY() worker method
        */
        this.getObjectByXY = function (e)
        {
            var ca   = this.canvas;
            var prop = this.properties;
    
            var mouseXY = RGraph.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 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) {
    
                // Rounding the value to the given number of decimals make the chart step
                var value   = Number(this.getValue(e));
                var shape   = this.getShapeByX(e);

                if (shape) {

                    RG.Registry.Set('chart.adjusting.shape', shape);

                    if (this.stackedOrGrouped && prop['chart.grouping'] == 'grouped') {

                        var indexes = RG.sequentialIndexToGrouped(shape['index'], this.data);

                        if (typeof this.data[indexes[0]] == 'number') {
                            this.data[indexes[0]] = Number(value);
                        } else if (!RG.is_null(this.data[indexes[0]])) {
                            this.data[indexes[0]][indexes[1]] = Number(value);
                        }
                    } else if (typeof this.data[shape['index']] == 'number') {

                        this.data[shape['index']] = Number(value);
                    }
    
                    RG.redrawCanvas(e.target);
                    RG.fireCustomEvent(this, 'onadjust');
                }
            }
        };




        /**
        * 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 prop       = obj.properties;
            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   = RGraph.getCanvasXY(obj.canvas);
            var gutterLeft = prop['chart.gutter.left'];
            var gutterTop  = prop['chart.gutter.top'];
            var width      = tooltip.offsetWidth;
            var height     = tooltip.offsetHeight;
            var value      = obj.data_arr[tooltip.__index__];
    
    
            // Set the top position
            tooltip.style.left = 0;
            tooltip.style.top  = canvasXY[1] + coordY - height - 7 + 'px';
            
            /**
            * If the tooltip is for a negative value - position it underneath the bar
            */
            if (value < 0) {
                tooltip.style.top =  canvasXY[1] + coordY + coordH + 7 + 'px';
            }
            
            
            // By default any overflow is hidden
            tooltip.style.overflow = '';
            
            // Inverted arrow
            // data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAAFCAMAAACkeOZkAAAAK3RFWHRDcmVhdGlvbiBUaW1lAFNhdCA2IE9jdCAyMDEyIDEyOjQ5OjMyIC0wMDAw2S1RlgAAAAd0SU1FB9wKBgszM4Ed2k4AAAAJcEhZcwAACxIAAAsSAdLdfvwAAAAEZ0FNQQAAsY8L/GEFAAAACVBMVEX/AAC9vb3//+92Pom0AAAAAXRSTlMAQObYZgAAAB1JREFUeNpjYAABRgY4YGRiRDCZYBwQE8qBMEEcAANCACqByy1sAAAAAElFTkSuQmCC
    
            // The arrow
            var img = new Image();
                img.style.position = 'absolute';
                img.id = '__rgraph_tooltip_pointer__';
                if (value >= 0) {
                    img.src = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABEAAAAFCAYAAACjKgd3AAAARUlEQVQYV2NkQAN79+797+RkhC4M5+/bd47B2dmZEVkBCgcmgcsgbAaA9GA1BCSBbhAuA/AagmwQPgMIGgIzCD0M0AMMAEFVIAa6UQgcAAAAAElFTkSuQmCC';
                    img.style.top = (tooltip.offsetHeight - 2) + 'px';
                } else {
                    img.src = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAAFCAMAAACkeOZkAAAAK3RFWHRDcmVhdGlvbiBUaW1lAFNhdCA2IE9jdCAyMDEyIDEyOjQ5OjMyIC0wMDAw2S1RlgAAAAd0SU1FB9wKBgszM4Ed2k4AAAAJcEhZcwAACxIAAAsSAdLdfvwAAAAEZ0FNQQAAsY8L/GEFAAAACVBMVEX/AAC9vb3//+92Pom0AAAAAXRSTlMAQObYZgAAAB1JREFUeNpjYAABRgY4YGRiRDCZYBwQE8qBMEEcAANCACqByy1sAAAAAElFTkSuQmCC';
                    img.style.top = '-5px';
                }
                
            tooltip.appendChild(img);
            
            // Reposition the tooltip if at the edges:
            
            // LEFT edge
            if ((canvasXY[0] + coordX + (coordW / 2) - (width / 2)) < 10) {
                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 / 2)) > 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';
            }
        };




        /**
        * 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']                = RGraph.array_clone(prop['chart.colors']);
                this.original_colors['chart.key.colors']            = RGraph.array_clone(prop['chart.key.colors']);
                this.original_colors['chart.crosshairs.color']      = prop['chart.crosshairs.color'];
                this.original_colors['chart.highlight.stroke']      = prop['chart.highlight.stroke'];
                this.original_colors['chart.highlight.fill']        = prop['chart.highlight.fill'];
                this.original_colors['chart.text.color']            = prop['chart.text.color'];
                this.original_colors['chart.background.barcolor1']  = prop['chart.background.barcolor1'];
                this.original_colors['chart.background.barcolor2']  = prop['chart.background.barcolor2'];
                this.original_colors['chart.background.grid.color'] = prop['chart.background.grid.color'];
                this.original_colors['chart.background.color']      = prop['chart.background.color'];
                this.original_colors['chart.strokecolor']           = prop['chart.strokecolor'];
                this.original_colors['chart.axis.color']            = prop['chart.axis.color'];
            }
            
            
            // chart.colors
            var colors = prop['chart.colors'];
            if (colors) {
                for (var i=0; i<colors.length; ++i) {
                    colors[i] = this.parseSingleColorForGradient(colors[i]);
                }
            }
    
            // chart.key.colors
            var colors = prop['chart.key.colors'];
            if (colors) {
                for (var i=0; i<colors.length; ++i) {
                    colors[i] = this.parseSingleColorForGradient(colors[i]);
                }
            }
    
             prop['chart.crosshairs.color']      = this.parseSingleColorForGradient(prop['chart.crosshairs.color']);
             prop['chart.highlight.stroke']      = this.parseSingleColorForGradient(prop['chart.highlight.stroke']);
             prop['chart.highlight.fill']        = this.parseSingleColorForGradient(prop['chart.highlight.fill']);
             prop['chart.text.color']            = this.parseSingleColorForGradient(prop['chart.text.color']);
             prop['chart.background.barcolor1']  = this.parseSingleColorForGradient(prop['chart.background.barcolor1']);
             prop['chart.background.barcolor2']  = this.parseSingleColorForGradient(prop['chart.background.barcolor2']);
             prop['chart.background.grid.color'] = this.parseSingleColorForGradient(prop['chart.background.grid.color']);
             prop['chart.background.color']      = this.parseSingleColorForGradient(prop['chart.background.color']);
             prop['chart.strokecolor']           = this.parseSingleColorForGradient(prop['chart.strokecolor']);
             prop['chart.axis.color']            = this.parseSingleColorForGradient(prop['chart.axis.color']);
        };
    
    
    
        /**
        * 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(0,ca.height - prop['chart.gutter.bottom'], 0, prop['chart.gutter.top']);
    
                var diff = 1 / (parts.length - 1);
    
                grad.addColorStop(0, RG.trim(parts[0]));
    
                for (var j=1,len=parts.length; j<len; ++j) {
                    grad.addColorStop(j * diff, RGraph.trim(parts[j]));
                }
            }
                
            return grad ? grad : color;
        };
    
    
    
        this.drawBevel =
        this.DrawBevel = function ()
        {
           var coords  = this.coords;
           var coords2 = this.coords2;
           
           var prop    = this.properties;
           var co      = this.context;
           var ca      = this.canvas;
    
            if (prop['chart.grouping'] == 'stacked') {
                for (var i=0; i<coords2.length; ++i) {
                    if (coords2[i] && coords2[i][0] && coords2[i][0][0]) {
                        
                        var x = coords2[i][0][0];
                        var y = coords2[i][0][1];
                        var w = coords2[i][0][2];
    
                        var arr = [];
                        for (var j=0; j<coords2[i].length; ++j) {
                            arr.push(coords2[i][j][3]);
                        }
                        var h = RGraph.array_sum(arr);
    
        
                        co.save();
                        
                            co.strokeStyle = 'black';
                        
                            // Clip to the rect
                            co.beginPath();
                            co.rect(x, y, w, h);
                            co.clip();
                
                            // Add the shadow
                            co.shadowColor = 'black';
                            co.shadowOffsetX = 0;
                            co.shadowOffsetY = 0;
                            co.shadowBlur = 20;
                
                            co.beginPath();
                            co.rect(x - 3, y - 3, w + 6, h + 100);
                            co.lineWidth = 5;
                            co.stroke();
                        co.restore();
                    }
                }
            } else {
    
                for (var i=0; i<coords.length; ++i) {
                    if (coords[i]) {
    
                        var x = coords[i][0];
                        var y = coords[i][1];
                        var w = coords[i][2];
                        var h = coords[i][3];
                        
                        var xaxispos = prop['chart.xaxispos'];
                        var xaxis_ycoord = ((ca.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop;
                        
                        
                        co.save();
                        
                            co.strokeStyle = 'black';
                        
                            // Clip to the rect
                            co.beginPath();
                            co.rect(x, y, w, h);
                            
                            co.clip();
                
                            // Add the shadow
                            co.shadowColor = 'black';
                            co.shadowOffsetX = 0;
                            co.shadowOffsetY = 0;
                            co.shadowBlur =  20;
    
                            if (xaxispos == 'top' || (xaxispos == 'center' && (y + h) > xaxis_ycoord)) {
                                y = y - 100;
                                h = h + 100;
                            } else {
                                y = y;
                                h = h + 100;
                            }
    
                            co.beginPath();
                                co.rect(x - 3, y - 3, w + 6, h + 6);
                                co.lineWidth = 5;
                            co.stroke();
                        co.restore();
                    }
                }
            }
        };




        /**
        * This function handles highlighting an entire data-series for the interactive
        * key
        * 
        * @param int index The index of the data series to be highlighted
        */
        this.interactiveKeyHighlight = function (index)
        {
            this.coords2.forEach(function (value, idx, arr)
            {
                if (typeof value[index] == 'object' && value[index]) {

                    var x = value[index][0]
                    var y = value[index][1]
                    var w = value[index][2]
                    var h = value[index][3]
                    
                    co.fillStyle = prop['chart.key.interactive.highlight.chart.fill'];
                    co.strokeStyle = prop['chart.key.interactive.highlight.chart.stroke'];
                    co.lineWidth   = 2;
                    co.strokeRect(x, y, w, h);
                    co.fillRect(x, y, w, h);
                }
            });
        };




        /**
        * 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;
        };
        
        
        
        
        /**
        * Draws the above labels
        */
        this.drawAboveLabels = function ()
        {
            var labels    = prop['chart.labels.above'];
            var specific  = prop['chart.labels.above.specific'];
            var color     = prop['chart.labels.above.color'];
            var decimals  = prop['chart.labels.above.decimals'];
            var size      = prop['chart.labels.above.size'];
            var angle     = -1 * prop['chart.labels.above.angle'];
            var coords    = this.coords;
            var coords2   = this.coords2;
            var data      = this.data;
            var ldata     = RG.arrayLinearize(this.data);
            var offset    = prop['chart.labels.above.offset'];
            var text_font = prop['chart.text.font'];
            var text_size = prop['chart.text.size'];
            var grouping  = prop['chart.grouping']


            // Turn off any shadow
            RG.noShadow(this);

            // Color
            co.fillStyle = typeof color === 'string' ? color : prop['chart.text.color'];


            // This bit draws the text labels that appear above the bars if requested
            if (labels && grouping === 'grouped') {
                for (var i=0,len=data.length,sequentialIndex=0; i<len; i+=1) {

                    // Alignment for regular, positive bars
                    if (typeof data[i] === 'number' && data[i] >= 0) {
                        
                        var angle  = angle;
                        var halign = (angle ? 'left' : 'center');
                        var valign = angle !== 0 ? 'center' : 'bottom';

                        RG.text2(this, {'font': text_font,
                                        'size': typeof size === 'number' ? size : text_size - 3,
                                        'x': coords2[i][0][0] + (coords2[i][0][2] / 2),
                                        'y': coords2[i][0][1] - offset,
                                        'text': specific ? (specific[sequentialIndex] || '') : RG.numberFormat(this, Number(typeof data[i] === 'object' ? data[i][0] : data[i]).toFixed(decimals)), // TODO Units?
                                        'halign': halign,
                                        'valign': valign,
                                        'angle': angle,
                                        'marker': false,
                                        'bounding': false,
                                        'tag': 'labels.above'
                                      });

                        sequentialIndex++;






                    // Alignment for regular, negative bars
                    } else if (typeof data[i] === 'number' && data[i] < 0) {

                        var angle  = angle;
                        var halign = angle ? 'right' : 'center';
                        var valign = angle !== 0 ? 'center' : 'top';


                        RG.text2(this, {'font': text_font,
                                        'size': typeof size === 'number' ? size : text_size - 3,
                                        'x': coords2[i][0][0] + (coords2[i][0][2] / 2),
                                        'y': coords2[i][0][1] + coords2[i][0][3] + offset,
                                        'text': specific ? (specific[sequentialIndex] || '') : RG.numberFormat(this, Number(typeof data[i] === 'object' ? data[i][0] : data[i]).toFixed(decimals)), // TODO Units?
                                        'halign': halign,
                                        'valign': valign,
                                        'angle': angle,
                                        'bounding': false,
                                        'marker': false,
                                        'tag': 'labels.above'
                                      });
                        
                        sequentialIndex++;






                    // Alignment for grouped bars
                    } else if (typeof data[i] === 'object') {
                
                            for (var j=0,len2=data[i].length; j<len2; j+=1) {

                                var angle  = angle;
                                var halign = data[i][j] < 0 ? 'right' : 'left';
                                    halign = angle === 0 ? 'center' : halign;
                                var valign = data[i][j] < 0 ? 'top' : 'bottom';
                                    valign = angle != 0 ? 'center' : valign;

                                RG.text2(this, {'font': text_font,
                                                'size': typeof size === 'number' ? size : text_size - 3,
                                                'x': coords2[i][j][0] + (coords2[i][j][2] / 2),
                                                'y': coords2[i][j][1] + (data[i][j] < 0 ? coords2[i][j][3] + offset: -offset),
                                                'text': specific ? (specific[sequentialIndex] || '') : RG.numberFormat(this, Number(data[i][j]).toFixed(decimals)), // TODO Units?
                                                'halign': halign,
                                                'valign': valign,
                                                'angle': angle,
                                                'bounding': false,
                                                'marker': false,
                                                'tag': 'labels.above'
                                              });
                                sequentialIndex++;
                            }
                    }
                }





            /**
            * STACKED bars
            */
            } else if (labels && grouping === 'stacked') {
                for (var i=0,len=data.length,sequentialIndex=0; i<len; i+=1) {
                    if (typeof data[i] === 'object') {

                        var angle  = angle;
                        var halign = angle != 0 ? 'left' : 'center';
                        var valign = angle != 0 ? 'center' : 'bottom';

                        RG.text2(this, {'font': text_font,
                                        'size': typeof size === 'number' ? size : text_size - 3,
                                        'x': coords2[i][0][0] + (coords2[i][0][2] / 2),
                                        'y': coords2[i][0][1] + (data[i][0] < 0 ? coords2[i][0][3] : 0) - offset,
                                        'text': specific ? (specific[sequentialIndex] || '') : RG.numberFormat(this, Number(RG.arraySum(data[i])).toFixed(decimals)), // TODO Units?
                                        'halign': halign,
                                        'valign': valign,
                                        'angle': angle,
                                        'bounding': false,
                                        'marker': false,
                                        'tag': 'labels.above'
                                      });

                        sequentialIndex += data[i].length;
                    
                    /**
                    * Regular numbers but in a stacked grouping
                    */
                    } else {

                        var angle  = angle;
                        var halign = angle != 0 ? 'left' : 'center';
                        var valign = angle != 0 ? 'center' : 'bottom';

                        RG.text2(this, {'font': text_font,
                                        'size': typeof size === 'number' ? size : text_size - 3,
                                        'x': coords2[i][0][0] + (coords2[i][0][2] / 2),
                                        'y': coords2[i][0][1] + (data[i][0] < 0 ? coords2[i][0][3] : 0) - offset,
                                        'text': specific ? (specific[sequentialIndex] || '') : RG.numberFormat(this, Number(data[i]).toFixed(decimals)), // TODO Units?
                                        'halign': halign,
                                        'valign': valign,
                                        'angle': angle,
                                        'bounding': false,
                                        'marker': false,
                                        'tag': 'labels.above'
                                      });
                        
                        sequentialIndex++;
                    }
                }
            }
        };




        /**
        * This function runs once only
        */
        this.firstDrawFunc = function ()
        {
        };




        /**
        * Bar chart Wave effect This effect defaults to 30 frames - which is
        * approximately half a second. This the prior, older implementation
        * of the Wave effect. It can be slower due to the many timers set
        * 
        * @param object obj The chart object
        */
        this.waveOld = function ()
        {
            var obj           = this;
            var opt           = arguments[0] ? arguments[0] : {};
                opt.frames    = opt.frames ? opt.frames : 15;
                opt.delay     = opt.delay || 50;
            var callback      = arguments[1] ? arguments[1] : function () {};
            var original_data = [];
            var frame         = [];
            var length        = obj.data.length;

            obj.draw();
            //var scale = RGraph.getScale2(obj, {'max':obj.max});
            obj.Set('chart.ymax', obj.scale2.max);
            RG.clear(obj.canvas);
            
            for (var i=0,len=length; i<len; ++i) {
                (function (idx)
                {
                    original_data[idx] = obj.data[idx];
                    obj.data[idx] = typeof obj.data[idx] === 'object' ? [] : 0;
                    frame[idx]   = typeof obj.data[idx] === 'object' ? [] : 0;
                    setTimeout(function () {iterator(idx, opt.frames);}, opt.delay * idx)
                })(i);
            }

            return this;


            function iterator (idx, frames)
            {
                if (frame[idx] <= frames) {
    
                    // Update the data point
                    if (typeof obj.data[idx] === 'number') {
                      obj.data[idx] = (frame[idx] / frames) * original_data[idx]
    
                    } else if (typeof obj.data[idx] === 'object') {
                        for (var k=0,len=original_data[idx].length; k<len; ++k) {
                            obj.data[idx][k] = (frame[idx] / frames) * original_data[idx][k];
                        }
                    }
    
                    RG.clear(obj.canvas);
                    RG.redrawCanvas(obj.canvas);
                    
                    ++frame[idx];
                    RG.Effects.updateCanvas(function () {iterator(idx, frames);});
                
                } else if (idx === (length - 1) ) {
                    callback(obj);
                }
            }
        };




        /**
        * (new) Bar chart Wave effect. This is a rewrite that should be smoother
        * because it just uses a single loop and not setTimeout
        * 
        * @param object   OPTIONAL An object map of options. You specify 'frames' here to give the number of frames in the effect
        * @param function OPTIONAL A function that will be called when the effect is complete
        */
        this.wave = function ()
        {
            var obj = this;
            var opt = arguments[0] || {};
                opt.frames =  opt.frames || 60;
                opt.startFrames = [];
                opt.counters    = [];

            var framesperbar   = opt.frames / 3;
            var frame          = -1;
            var callback       = arguments[1] || function () {};
            var original       = RG.arrayClone(obj.data);

            for (var i=0,len=obj.data.length; i<len; i+=1) {
                opt.startFrames[i] = ((opt.frames / 2) / (obj.data.length - 1)) * i;
                
                if (typeof obj.data[i] === 'object' && obj.data[i]) {
                    opt.counters[i] = [];
                    for (var j=0; j<obj.data[i].length; j++) {
                        opt.counters[i][j] = 0;
                    }
                } else {
                    opt.counters[i]    = 0;
                }
            }

            /**
            * This stops the chart from jumping
            */
            obj.draw();
            obj.Set('ymax', obj.scale2.max);
            RG.clear(obj.canvas);

            function iterator ()
            {
                ++frame;

                for (var i=0,len=obj.data.length; i<len; i+=1) {
                        if (frame > opt.startFrames[i]) {
                            if (typeof obj.data[i] === 'number') {
                                obj.data[i] = ma.min(
                                                     ma.abs(original[i]),
                                                     ma.abs(original[i] * ( (opt.counters[i]++) / framesperbar))
                                                    );
                                // Make the number negative if the original was
                                if (original[i] < 0) {
                                    obj.data[i] *= -1;
                                }
                            } else if (!RG.isNull(obj.data[i])) {
                                for (var j=0,len2=obj.data[i].length; j<len2; j+=1) {
                                    obj.data[i][j] = ma.min(
                                                            ma.abs(original[i][j]),
                                                            ma.abs(original[i][j] * ( (opt.counters[i][j]++) / framesperbar))
                                                           );
                                    // Make the number negative if the original was
                                    if (original[i][j] < 0) {
                                        obj.data[i][j] *= -1;
                                    }
                                }
                            }
                        } else {
                            obj.data[i] = typeof obj.data[i] === 'object' && obj.data[i] ? RG.arrayPad([], obj.data[i].length, 0) : (RG.isNull(obj.data[i]) ? null : 0);
                        }
                }


                if (frame >= opt.frames) {
                    callback(obj);
                } else {
                    RG.redrawCanvas(obj.canvas);
                    RG.Effects.updateCanvas(iterator);
                }
            }
            
            iterator();

            return this;
        };




        /**
        * Grow
        * 
        * The Bar chart Grow effect gradually increases the values of the bars
        * 
        * @param object       An object of options - eg: {frames: 30}
        * @param function     A function to call when the effect is complete
        */
        this.grow = function ()
        {
            // Callback
            var opt      = arguments[0] || {};
            var frames   = opt.frames || 30;
            var frame    = 0;
            var callback = arguments[1] || function () {};
            var obj      = this;
    
            // Save the data
            obj.original_data = RGraph.array_clone(obj.data);
            
    
            // Stop the scale from changing by setting chart.ymax (if it's not already set)
            if (obj.Get('chart.ymax') == null) {
    
                var ymax = 0;
    
                for (var i=0; i<obj.data.length; ++i) {
                    if (RG.is_array(obj.data[i]) && obj.Get('chart.grouping') == 'stacked') {
                        ymax = ma.max(ymax, ma.abs(RG.array_sum(obj.data[i])));
    
                    } else if (RG.is_array(obj.data[i]) && obj.Get('chart.grouping') == 'grouped') {
                        ymax = ma.max(ymax, ma.abs(RG.array_max(obj.data[i])));
                    } else {
                        ymax = ma.max(ymax, ma.abs(obj.data[i]));
                    }
                }
    
                var scale = RGraph.getScale2(obj, {'max':ymax});
                obj.Set('chart.ymax', scale.max);
            }



            var iterator = function ()
            {
                var easingMultiplier = RG.Effects.getEasingMultiplier(frames, frame);

                // Alter the Bar chart data depending on the frame
                for (var j=0,len=obj.original_data.length; j<len; ++j) {
                    if (typeof obj.data[j] === 'object') {
                        for (var k=0,len2=obj.data[j].length; k<len2; ++k) {
                            obj.data[j][k] = easingMultiplier * obj.original_data[j][k];
                        }
                    } else {
                        obj.data[j] = easingMultiplier * obj.original_data[j];
                    }
                }




                //RGraph.clear(obj.canvas);
                RGraph.redrawCanvas(obj.canvas);




                if (frame < frames) {
                    frame += 1;
    
                    RG.Effects.updateCanvas(iterator);

                // Call the callback function
                } else {
                    callback(obj);
                }
            };
    
            iterator();
            
            return this;
        };




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




        /**
        * This the 'end' of the constructor so if the first argument actually
        * contains configuration dta as well - handle that.
        */
        if (parseConfObjectForOptions) {
            RG.parseObjectStyleConfig(this, conf);
            return this;
        }
    };





    /*********************************************************************************************************
    * This is the combined bar and Line class which makes creating bar/line combo charts a little bit easier *
    /*********************************************************************************************************/







    RGraph.CombinedChart = function ()
    {
        /**
        * Create a default empty array for the objects
        */
        this.objects = [];
        
        var objects = arguments;

        if (RGraph.is_array(arguments[0])) {
            objects = arguments[0];
        }

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

            this.objects[i] = objects[i];

            /**
            * Set the Line chart gutters to match the Bar chart gutters
            */
            this.objects[i].Set('chart.gutter.left',  this.objects[0].Get('chart.gutter.left'));
            this.objects[i].Set('chart.gutter.right',  this.objects[0].Get('chart.gutter.right'));
            this.objects[i].Set('chart.gutter.top',    this.objects[0].Get('chart.gutter.top'));
            this.objects[i].Set('chart.gutter.bottom', this.objects[0].Get('chart.gutter.bottom'));

            if (this.objects[i].type == 'line') {
        
                /**
                * Set the line chart hmargin
                */
                this.objects[i].Set('chart.hmargin', ((this.objects[0].canvas.width - this.objects[0].Get('chart.gutter.right') - this.objects[0].Get('chart.gutter.left')) / this.objects[0].data.length) / 2 );
                
                
                /**
                * No labels, axes or grid on the Line chart
                */
                this.objects[i].Set('chart.noaxes', true);
                this.objects[i].Set('chart.background.grid', false);
                this.objects[i].Set('chart.ylabels', false);
            }

            /**
            * Resizing
            */
            if (this.objects[i].Get('chart.resizable')) {
                var resizable_object = this.objects[i];
            }
        }

        /**
        * Resizing
        */
        if (resizable_object) {
            /**
            * This recalculates the Line chart hmargin when the chart is resized
            */
            function myOnresizebeforedraw (obj)
            {
                var gutterLeft = obj.Get('chart.gutter.left');
                var gutterRight = obj.Get('chart.gutter.right');
            
                obj.Set('chart.hmargin', (obj.canvas.width - gutterLeft - gutterRight) / (obj.original_data[0].length * 2));
            }

            RGraph.AddCustomEventListener(resizable_object,
                                          'onresizebeforedraw',
                                          myOnresizebeforedraw);
        }
    };




    /**
    * The Add method can be used to add methods to the CombinedChart object.
    */
    RGraph.CombinedChart.prototype.add =
    RGraph.CombinedChart.prototype.Add = function (obj)
    {
        this.objects.push(obj);
    };

    
    /**
    * The Draw method goes through all of the objects drawing them (sequentially)
    */
    RGraph.CombinedChart.prototype.draw =
    RGraph.CombinedChart.prototype.Draw = function ()
    {
        for (var i=0; i<this.objects.length; ++i) {
            this.objects[i].Draw();
        }
    };