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

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


/**
 * The bar chart constructor
 *
 * @param object canvas The canvas object
 * @param array  data   The chart data
 */
RGraph.Waterfall = function (conf) {
    /**
     * Allow for object config style
     */
    if (typeof conf === 'object'
        && typeof conf.data === 'object'
        && typeof conf.id === 'string') {

        var parseConfObjectForOptions = true; // Set this so the config is parsed (at the end of the constructor)

    } else {

        var conf = {
            id: conf,
            data: arguments[1]
        };
    }


    this.id = conf.id;
    this.canvas = document.getElementById(this.id);
    this.context = this.canvas.getContext ? this.canvas.getContext("2d") : null;
    this.canvas.__object__ = this;
    this.type = 'waterfall';
    this.max = 0;
    this.data = conf.data;
    this.isRGraph = true;
    this.coords = [];
    this.uid = RGraph.CreateUID();
    this.canvas.uid = this.canvas.uid ? this.canvas.uid : RGraph.CreateUID();
    this.colorsParsed = false;
    this.coordsText = [];
    this.original_colors = [];
    this.firstDraw = true; // After the first draw this will be false


    // Various config
    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.autofit.align': false,
        'chart.background.image': null,
        'chart.background.hbars': null,
        'chart.linewidth': 1,
        'chart.axis.linewidth': 1,
        'chart.xaxispos': 'bottom',
        'chart.numxticks': null,
        'chart.numyticks': 10,
        'chart.hmargin': 5,
        'chart.strokestyle': '#666',
        'chart.axis.color': 'black',
        'chart.gutter.left': 25,
        'chart.gutter.right': 25,
        'chart.gutter.top': 25,
        'chart.gutter.bottom': 25,
        'chart.labels': [],
        'chart.ylabels': true,
        'chart.text.color': 'black',
        'chart.text.size': 10,
        'chart.text.angle': 0,
        'chart.text.font': 'Arial',
        'chart.ymax': null,
        'chart.title': '',
        'chart.title.color': 'black',
        'chart.title.background': null,
        'chart.title.hpos': null,
        'chart.title.vpos': null,
        'chart.title.bold': true,
        'chart.title.font': null,
        'chart.title.xaxis': '',
        'chart.title.yaxis': '',
        'chart.title.yaxis.bold': true,
        'chart.title.yaxis.size': null,
        'chart.title.yaxis.font': null,
        'chart.title.yaxis.color': null,
        'chart.title.xaxis.pos': null,
        'chart.title.yaxis.pos': null,
        'chart.title.yaxis.align': 'left',
        'chart.title.xaxis.bold': true,
        'chart.title.xaxis.size': null,
        'chart.title.xaxis.font': 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(white:green)', 'Gradient(white:red)', 'Gradient(white:blue)'],
        'chart.shadow': false,
        'chart.shadow.color': '#666',
        'chart.shadow.offsetx': 3,
        'chart.shadow.offsety': 3,
        'chart.shadow.blur': 3,
        'chart.tooltips': null,
        'chart.tooltips.effect': 'fade',
        'chart.tooltips.css.class': 'RGraph_tooltip',
        'chart.tooltips.event': 'onclick',
        'chart.tooltips.highlight': true,
        'chart.tooltips.override': null,
        'chart.highlight.stroke': 'rgba(0,0,0,0)',
        'chart.highlight.fill': 'rgba(255,255,255,0.7)',
        'chart.contextmenu': null,
        'chart.units.pre': '',
        'chart.units.post': '',
        'chart.scale.decimals': 0,
        'chart.scale.point': '.',
        'chart.scale.thousand': ',',
        //'chart.scale.formatter':        null,
        'chart.crosshairs': false,
        'chart.crosshairs.color': '#333',
        'chart.crosshairs.hline': true,
        'chart.crosshairs.vline': true,
        '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.noaxes': false,
        'chart.noxaxis': false,
        'chart.noyaxis': false,
        'chart.axis.color': 'black',
        'chart.total': true,
        'chart.multiplier.x': 1,
        'chart.multiplier.w': 1,
        'chart.events.click': null,
        'chart.events.mousemove': null
    }

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

    /**
     * Create the $ objects
     */
    for (var i = 0; i <= this.data.length; ++i) {
        this['$' + i] = {}
    }


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

        this.canvas.__rgraph_aa_translated__ = true;
    }


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


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


    /**
     * 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) {
            var value = typeof arguments[1] === 'undefined' ? null : arguments[1];

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


            /**
             * 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.total' && prop['chart.numxticks'] == null) {
                prop['chart.numxticks'] = this.data.length;
            }

            prop[name.toLowerCase()] = 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.toLowerCase()];
        };


    /**
     * The function you call to draw the bar chart
     */
    this.draw =
        this.Draw = function () {
            /**
             * Fire the onbeforedraw event
             */
            RGraph.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;
            }


            /**
             * Draw the background image
             */
            RGraph.DrawBackgroundImage(this);

            /**
             * 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'];

            /**
             * Stop the coords array from growing uncontrollably
             */
            this.coords = [];


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


            /**
             * This gets used a lot
             */
            this.centery = ((ca.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop;

            /**
             * Work out a few things. They need to be here because they depend on things you can change after you instantiate the object
             */
            this.max = 0;
            this.grapharea = ca.height - this.gutterTop - this.gutterBottom;
            this.graphwidth = ca.width - this.gutterLeft - this.gutterRight;
            this.halfTextHeight = prop['chart.text.size'] / 2;


            /**
             * Work out the maximum value
             */
            this.max = this.getMax(this.data);

            var decimals = prop['chart.scale.decimals'];
            this.scale2 = RGraph.getScale2(this, {
                'max': typeof(prop['chart.ymax']) == 'number' ? prop['chart.ymax'] : this.max,
                'min': prop['chart.xmin'],
                'strict': typeof(prop['chart.ymax']) == 'number' ? true : false,
                'scale.decimals': Number(decimals),
                'scale.point': prop['chart.scale.point'],
                'scale.thousand': prop['chart.scale.thousand'],
                'scale.round': prop['chart.scale.round'],
                'units.pre': prop['chart.units.pre'],
                'units.post': prop['chart.units.post'],
                'ylabels.count': prop['chart.labels.count']
            });

            this.max = this.scale2.max;


            // Draw the background hbars
            RGraph.DrawBars(this)

            // Progressively Draw the chart
            RG.background.Draw(this);

            this.DrawAxes();
            this.Drawbars();
            this.DrawLabels();

            /**
             * If the X axis is at the bottom - draw the it again so that it appears "on top" of the bars
             */
            if (prop['chart.xaxispos'] == 'bottom' && prop['chart.noaxes'] == false && prop['chart.noxaxis'] == false) {
                co.strokeStyle = prop['chart.axis.color'];
                co.strokeRect(prop['chart.gutter.left'], ca.height - prop['chart.gutter.bottom'], ca.width - this.gutterLeft - this.gutterRight, 0);
            }

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


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


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


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


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

            return this;
        };


    /**
     * Draws the charts axes
     */
    this.drawAxes =
        this.DrawAxes = function () {
            if (prop['chart.noaxes']) {
                return;
            }

            co.beginPath();
            co.strokeStyle = prop['chart.axis.color'];
            co.lineWidth = prop['chart.axis.linewidth'] + 0.001;

            // Draw the Y axis
            if (prop['chart.noyaxis'] == false) {
                co.moveTo(Math.round(this.gutterLeft), this.gutterTop);
                co.lineTo(Math.round(this.gutterLeft), ca.height - this.gutterBottom);
            }

            // Draw the X axis
            if (prop['chart.noxaxis'] == false) {
                // Center X axis
                if (prop['chart.xaxispos'] == 'center') {
                    co.moveTo(this.gutterLeft, Math.round(((ca.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop));
                    co.lineTo(ca.width - this.gutterRight, Math.round(((ca.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop));
                } else {
                    co.moveTo(this.gutterLeft, Math.round(ca.height - this.gutterBottom));
                    co.lineTo(ca.width - this.gutterRight, Math.round(ca.height - this.gutterBottom));
                }
            }

            var numYTicks = prop['chart.numyticks'];

            // Draw the Y tickmarks
            if (prop['chart.noyaxis'] == false && prop['chart.numyticks'] > 0) {

                var yTickGap = (ca.height - this.gutterTop - this.gutterBottom) / numYTicks;

                for (y = this.gutterTop; y < (ca.height - this.gutterBottom); y += yTickGap) {
                    if (prop['chart.xaxispos'] == 'bottom' || (y != ((ca.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop)) {
                        co.moveTo(this.gutterLeft, Math.round(y));
                        co.lineTo(this.gutterLeft - 3, Math.round(y));
                    }
                }

                /**
                 * If the X axis is not being shown, draw an extra tick
                 */
                if (prop['chart.noxaxis'] || prop['chart.xaxispos'] == 'center') {
                    co.moveTo(this.gutterLeft - 3, Math.round(ca.height - this.gutterBottom));
                    co.lineTo(this.gutterLeft, Math.round(ca.height - this.gutterBottom));
                }
            }


            // Draw the X tickmarks
            if (prop['chart.numxticks'] == null) {
                prop['chart.numxticks'] = this.data.length + (prop['chart.total'] ? 1 : 0)
            }

            if (prop['chart.noxaxis'] == false && prop['chart.numxticks'] > 0) {

                xTickGap = (ca.width - this.gutterLeft - this.gutterRight ) / prop['chart.numxticks'];

                if (prop['chart.xaxispos'] == 'center') {
                    yStart = ((ca.height - this.gutterBottom - this.gutterTop) / 2) + this.gutterTop - 3;
                    yEnd = ((ca.height - this.gutterBottom - this.gutterTop) / 2) + this.gutterTop + 3;
                } else {
                    yStart = ca.height - this.gutterBottom;
                    yEnd = (ca.height - this.gutterBottom) + 3;
                }

                for (x = this.gutterLeft + xTickGap; x <= ca.width - this.gutterRight + 1; x += xTickGap) {
                    co.moveTo(Math.round(x), yStart);
                    co.lineTo(Math.round(x), yEnd);
                }

                if (prop['chart.noyaxis']) {
                    co.moveTo(Math.round(this.gutterLeft), yStart);
                    co.lineTo(Math.round(this.gutterLeft), yEnd);
                }
            }

            /**
             * If the Y axis is not being shown, draw an extra tick
             */
            if (prop['chart.noyaxis'] && prop['chart.noxaxis'] == false) {
                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 labels for the graph
     */
    this.drawLabels =
        this.DrawLabels = function () {
            var context = co;
            var numYLabels = 5; // Make this configurable
            var interval = this.grapharea / numYLabels;
            var font = prop['chart.text.font'];
            var size = prop['chart.text.size'];
            var color = prop['chart.text.color'];
            var units_pre = prop['chart.units.pre'];
            var units_post = prop['chart.units.post'];

            co.beginPath();
            co.fillStyle = color;

            /**
             * First, draw the Y labels
             */
            if (prop['chart.ylabels']) {
                if (prop['chart.xaxispos'] == 'center') {

                    var halfInterval = interval / 2;
                    var halfWay = ((ca.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop;

                    for (var i = 0, len = this.scale2.labels.length; i < len; ++i) {
                        RG.Text2(this, {
                            'font': font,
                            'size': size,
                            'x': this.gutterLeft - 5,
                            'y': this.gutterTop + (((this.grapharea / 2) / len) * i),
                            'text': this.scale2.labels[len - i - 1],
                            'valign': 'center',
                            'halign': 'right',
                            'tag': 'scale'
                        });

                        RG.Text2(this, {
                            'font': font,
                            'size': size,
                            'x': this.gutterLeft - 5,
                            'y': halfWay + (((this.grapharea / 2) / len) * (i + 1)),
                            'text': this.scale2.labels[i],
                            'valign': 'center',
                            'halign': 'right',
                            'tag': 'scale'
                        });
                    }

                } else {

                    for (var i = 0, len = this.scale2.labels.length; i < len; ++i) {
                        RG.Text2(this, {
                            'font': font,
                            'size': size,
                            'x': this.gutterLeft - 5,
                            'y': ca.height - this.gutterBottom - ((this.grapharea / len) * (i + 1)),
                            'text': this.scale2.labels[i],
                            'valign': 'center',
                            'halign': 'right',
                            'tag': 'scale'
                        });
                    }
                }
            }


            /**
             * Now, draw the X labels
             */
            if (prop['chart.labels'].length > 0) {

                // Recalculate the interval for the X labels
                interval = (ca.width - this.gutterLeft - this.gutterRight) / prop['chart.labels'].length;

                var halign = 'center';
                var angle = prop['chart.text.angle'];

                if (angle) {
                    halign = 'right';
                    angle *= -1;
                }

                var labels = prop['chart.labels'];

                for (var i = 0, len = labels.length; i < len; i += 1) {
                    RG.Text2(this, {
                        'font': font,
                        'size': size,
                        'x': this.gutterLeft + (i * interval) + (interval / 2),
                        'y': ca.height - this.gutterBottom + 5 + this.halfTextHeight,
                        'text': labels[i],
                        'valign': 'center',
                        'halign': halign,
                        'angle': angle,
                        'tag': 'labels'
                    });
                }
            }

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


    /**
     * Draws the bars on to the chart
     */
    this.drawbars =
        this.Drawbars = function () {
            var context = co;
            var canvas = ca;
            var hmargin = prop['chart.hmargin'];
            var runningTotal = 0;

            co.lineWidth = prop['chart.linewidth'] + 0.001;

            for (var i = 0, len = this.data.length; i < len; ++i) {
                co.beginPath();
                co.strokeStyle = prop['chart.strokestyle'];

                var x = Math.round(this.gutterLeft + hmargin + (((this.graphwidth / (this.data.length + (prop['chart.total'] ? 1 : 0))) * i) * prop['chart.multiplier.x']));
                var y = Math.round(this.gutterTop + this.grapharea - (i == 0 ? ((this.data[0] / this.max) * this.grapharea) : (this.data[i] > 0 ? ((runningTotal + this.data[i]) / this.max) * this.grapharea : (runningTotal / this.max) * this.grapharea)));
                var w = ((ca.width - this.gutterLeft - this.gutterRight) / (this.data.length + (prop['chart.total'] ? 1 : 0 )) ) - (2 * prop['chart.hmargin']);
                w = w * prop['chart.multiplier.w'];
                var h = (Math.abs(this.data[i]) / this.max) * this.grapharea;

                if (prop['chart.xaxispos'] == 'center') {
                    h /= 2;
                    y = (i == 0 ? ((this.data[0] / this.max) * this.grapharea) : (this.data[i] > 0 ? ((runningTotal + this.data[i]) / this.max) * this.grapharea : (runningTotal / this.max) * this.grapharea));
                    y = this.gutterTop + (this.grapharea / 2) - (y / 2);
                }

                // Color
                co.fillStyle = this.data[i] >= 0 ? prop['chart.colors'][0] : prop['chart.colors'][1];


                if (prop['chart.shadow']) {
                    RG.SetShadow(this, prop['chart.shadow.color'], prop['chart.shadow.offsetx'], prop['chart.shadow.offsety'], prop['chart.shadow.blur']);
                } else {
                    RG.NoShadow(this);
                }

                co.rect(x, y, w, h);

                this.coords.push([x, y, w, h]);

                runningTotal += this.data[i];

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

            // Store the total
            this.total = runningTotal;

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

                // This is the height of the final bar
                h = (runningTotal / this.max) * (this.grapharea / (prop['chart.xaxispos'] == 'center' ? 2 : 1));

                /**
                 * Set the Y (ie the start point) value
                 */
                if (prop['chart.xaxispos'] == 'center') {
                    y = runningTotal > 0 ? this.centery - h : this.centery - h;
                } else {
                    y = ca.height - this.gutterBottom - h;
                }

                // This is the X position of the final bar
                x = x + (prop['chart.hmargin'] * 2) + w;


                // Final color
                co.fillStyle = prop['chart.colors'][2];

                co.beginPath();
                co.strokeRect(x, y, w, h);
                co.fillRect(x, y, w, h);
                co.stroke();
                co.fill();

                this.coords.push([x, y - (runningTotal > 0 ? 0 : Math.abs(h)), w, Math.abs(h)]);
            }

            RG.NoShadow(this);

            /**
             * This draws the connecting lines
             */
            co.lineWidth = 1;

            for (var i = 1, len = this.coords.length; i < len; i += 1) {
                co.strokeStyle = 'gray';
                co.beginPath();
                if (this.data[i - 1] > 0) {
                    co.moveTo(this.coords[i - 1][0] + this.coords[i - 1][2], Math.round(this.coords[i - 1][1]));
                    co.lineTo(this.coords[i - 1][0] + this.coords[i - 1][2] + (2 * hmargin), Math.round(this.coords[i - 1][1]));
                } else {
                    co.moveTo(this.coords[i - 1][0] + this.coords[i - 1][2], Math.round(this.coords[i - 1][1] + this.coords[i - 1][3]));
                    co.lineTo(this.coords[i - 1][0] + this.coords[i - 1][2] + (2 * hmargin), Math.round(this.coords[i - 1][1] + this.coords[i - 1][3]));
                }
                co.stroke();
            }
        };


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

                var mouseCoords = RG.getMouseXY(e);
                var mouseX = mouseCoords[0];
                var mouseY = mouseCoords[1];

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

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

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

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

            return null;
        };


    /**
     * The Waterfall is slightly different to Bar/Line charts so has this function to get the max value
     */
    this.getMax = function (data) {
        var runningTotal = 0;
        var max = 0;

        for (var i = 0, len = data.length; i < len; i += 1) {
            runningTotal += data[i];
            max = ma.max(max, ma.abs(runningTotal));
        }

        return max;
    };


    /**
     * This function facilitates the installation of tooltip event listeners if
     * tooltips are defined.
     */
    this.allowTooltips =
        this.AllowTooltips = function () {
            // Preload any tooltip images that are used in the tooltips
            RG.PreLoadTooltipImages(this);


            /**
             * This installs the window mousedown event listener that lears any
             * highlight that may be visible.
             */
            RG.InstallWindowMousedownTooltipListener(this);


            /**
             * This installs the canvas mousemove event listener. This function
             * controls the pointer shape.
             */
            RG.InstallCanvasMousemoveTooltipListener(this);


            /**
             * This installs the canvas mouseup event listener. This is the
             * function that actually shows the appropriate tooltip (if any).
             */
            RG.InstallCanvasMouseupTooltipListener(this);
        };


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


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

        if (
            mouseXY[0] > this.gutterLeft
            && mouseXY[0] < (ca.width - this.gutterRight)
            && mouseXY[1] > this.gutterTop
            && mouseXY[1] < (ca.height - this.gutterBottom)
        ) {

            return this;
        }
    };


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

        /**
         * Change the value to be the total if necessary
         */
        if (tooltip.__index__ == obj.data.length) {
            value = obj.total;
        }

        // 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 = '';

        // The arrow
        var img = new Image();
        img.id = '__rgraph_tooltip_pointer__';
        img.style.position = 'absolute';
        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 - (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 method returns the appropriate Y coord for the given value
     *
     * @param number value The value
     */
    this.getYCoord = function (value) {
        if (value > this.max) {
            return null;
        }

        if (prop['chart.xaxispos'] == 'center') {

            if (value < (-1 * this.max)) {
                return null;
            }

            var coord = (value / this.max) * (this.grapharea / 2);
            return this.gutterTop + (this.grapharea / 2) - coord;

        } else {

            if (value < 0) {
                return null;
            }

            var coord = (value / this.max) * this.grapharea;
            coord = coord + this.gutterTop;
            return ca.height - coord;
        }
    };


    /**
     * This allows for easy specification of gradients
     */
    this.parseColors = function () {
        // Save the original colors so that they can be restored when the canvas is reset
        if (this.original_colors.length === 0) {
            this.original_colors['chart.colors'] = RG.array_clone(prop['chart.colors']);
            this.original_colors['chart.key.colors'] = RG.array_clone(prop['chart.key.colors']);
            this.original_colors['chart.crosshairs.color'] = RG.array_clone(prop['chart.crosshairs.color']);
            this.original_colors['chart.highlight.stroke'] = RG.array_clone(prop['chart.highlight.stroke']);
            this.original_colors['chart.highlight.fill'] = RG.array_clone(prop['chart.highlight.fill']);
            this.original_colors['chart.background.barcolor1'] = RG.array_clone(prop['chart.background.barcolor1']);
            this.original_colors['chart.background.barcolor2'] = RG.array_clone(prop['chart.background.barcolor2']);
            this.original_colors['chart.background.grid.color'] = RG.array_clone(prop['chart.background.grid.color']);
            this.original_colors['chart.strokestyle'] = RG.array_clone(prop['chart.strokestyle']);
            this.original_colors['chart.axis.color'] = RG.array_clone(prop['chart.axis.color']);
        }


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

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

        // chart.key.colors
        var colors = prop['chart.key.colors'];

        if (colors) {
            for (var i = 0, len = colors.length; i < len; ++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.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.strokestyle'] = this.parseSingleColorForGradient(prop['chart.strokestyle']);
        prop['chart.axis.color'] = this.parseSingleColorForGradient(prop['chart.axis.color']);
    };


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


    /**
     * This parses a single color value
     *
     * @param string color The color to parse for gradients
     */
    this.parseSingleColorForGradient = function (color) {
        if (!color || typeof color != 'string') {
            return color;
        }

        if (typeof color === 'string' && 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, RG.trim(parts[j]));
            }
        }

        return grad ? grad : color;
    };


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

        this[type] = func;

        return this;
    };


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


    /**
     * Waterfall Grow
     *
     * @param object Options. You can pass frames here - which should be a number
     * @param function An optional function which is called when the animation is finished
     */
    this.grow = function () {
        var opt = arguments[0] || {};
        var callback = arguments[1] || function () {
            };
        var frames = opt.frames || 30;
        var numFrame = 0;
        var obj = this;
        var data = RG.array_clone(obj.data);

        //Reset The data to zeros
        for (var i = 0, len = obj.data.length; i < len; ++i) {
            obj.data[i] /= frames;
        }

        /**
         * Fix the scale
         */
        if (obj.Get('chart.ymax') == null) {
            var max = obj.getMax(data);
            var scale2 = RG.getScale2(obj, {'max': max});
            obj.Set('chart.ymax', scale2.max);
        }

        //obj.Set('chart.multiplier.x', 0);
        //obj.Set('chart.multiplier.w', 0);

        function iterator() {
            for (var i = 0; i < obj.data.length; ++i) {

                // This produces a very slight easing effect
                obj.data[i] = data[i] * RG.Effects.getEasingMultiplier(frames, numFrame);
            }

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

            if (++numFrame < frames) {
                RGraph.Effects.updateCanvas(iterator);
            } else {
                callback(obj);
            }
        }

        iterator();

        return this;
    };


    /**
     * Now, because canvases can support multiple charts, canvases must always be registered
     */
    RG.Register(this);


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


    return this;
};
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