/**

*

* jquery.sparkline.js

*

* v1.4.2

* (c) Splunk, Inc 

* Contact: Gareth Watts (gareth@splunk.com)

* http://omnipotent.net/jquery.sparkline/

*

* Generates inline sparkline charts from data supplied either to the method

* or inline in HTML

* 

* Compatible with Internet Explorer 6.0+ and modern browsers equipped with the canvas tag

* (Firefox 2.0+, Safari, Opera, etc)

*

* License: New BSD License

* 

* Copyright (c) 2009, Splunk Inc.

* All rights reserved.

* 

* Redistribution and use in source and binary forms, with or without modification, 

* are permitted provided that the following conditions are met:

* 

*     * Redistributions of source code must retain the above copyright notice, 

*       this list of conditions and the following disclaimer.

*     * Redistributions in binary form must reproduce the above copyright notice, 

*       this list of conditions and the following disclaimer in the documentation 

*       and/or other materials provided with the distribution.

*     * Neither the name of Splunk Inc nor the names of its contributors may 

*       be used to endorse or promote products derived from this software without 

*       specific prior written permission.

* 

* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 

* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 

* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 

* SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 

* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 

* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 

* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 

* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 

* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

* 

*

* Usage: 

*  $(selector).sparkline(values, options)

*

* If values is undefined or set to 'html' then the data values are read from the specified tag:

*   <p>Sparkline: <span class="sparkline">1,4,6,6,8,5,3,5</span></p>

*   $('.sparkline').sparkline();

* There must be no spaces in the enclosed data set

*

* Otherwise values must be an array of numbers

*    <p>Sparkline: <span id="sparkline1">This text replaced if the browser is compatible</span></p>

*    $('#sparkline1').sparkline([1,4,6,6,8,5,3,5])

*

* For line charts, x values can also be specified:

*   <p>Sparkline: <span class="sparkline">1:1,2.7:4,3.4:6,5:6,6:8,8.7:5,9:3,10:5</span></p>

*    $('#sparkline1').sparkline([ [1,1], [2.7,4], [3.4,6], [5,6], [6,8], [8.7,5], [9,3], [10,5] ])

*

* Supported options:

*   lineColor - Color of the line used for the chart

*   fillColor - Color used to fill in the chart - Set to '' or false for a transparent chart

*   width - Width of the chart - Defaults to 3 times the number of values in pixels

*   height - Height of the chart - Defaults to the height of the containing element

*   chartRangeMin - Specify the minimum value to use for the range of the chart - Defaults to the minimum value supplied

*   chartRangeMax - Specify the maximum value to use for the range of the chart - Defaults to the maximum value supplied

*   composite - If true then don't erase any existing chart attached to the tag, but draw

*           another chart over the top - Note that width and height are ignored if an

*           existing chart is detected.

*

* There are 7 types of sparkline, selected by supplying a "type" option of 'line' (default),

* 'bar', 'tristate', 'bullet', 'discrete', 'pie' or 'box'

*    line - Line chart.  Options:

*       spotColor - Set to '' to not end each line in a circular spot

*       minSpotColor - If set, color of spot at minimum value

*       maxSpotColor - If set, color of spot at maximum value

*       spotRadius - Radius in pixels

*       normalRangeMin 

*       normalRangeMax - If set draws a filled horizontal bar between these two values marking the "normal"

*                      or expected range of values

*       normalRangeColor - Color to use for the above bar

*       defaultPixelsPerValue - Defaults to 3 pixels of width for each value in the chart

*

*   bar - Bar chart.  Options:

*       barColor - Color of bars for postive values

*       negBarColor - Color of bars for negative values

*       barWidth - Width of bars in pixels

*       barSpacing - Gap between bars in pixels

*       zeroAxis - Centers the y-axis around zero if true

*

*   tristate - Charts values of win (>0), lose (<0) or draw (=0)

*       posBarColor - Color of win values

*       negBarColor - Color of lose values

*       zeroBarColor - Color of draw values

*       barWidth - Width of bars in pixels

*       barSpacing - Gap between bars in pixels

*       colorMap - Optional mappnig of values to colors to override the *BarColor values above

*

*   discrete - Options:

*       lineHeight - Height of each line in pixels - Defaults to 30% of the graph height

*       thesholdValue - Values less than this value will be drawn using thresholdColor instead of lineColor

*       thresholdColor

*

*   bullet - Values for bullet graphs msut be in the order: target, performance, range1, range2, range3, ...

*       options:

*       targetColor - The color of the vertical target marker

*       targetWidth - The width of the target marker in pixels

*       performanceColor - The color of the performance measure horizontal bar

*       rangeColors - Colors to use for each qualitative range background color

*

*   pie - Pie chart. Options:

*       sliceColors - An array of colors to use for pie slices

*       offset - Angle in degrees to offset the first slice - Try -90 or +90

*

*   box - Box plot. Options:

*       raw - Set to true to supply pre-computed plot points as values

*             values should be: low_outlier, low_whisker, q1, median, q3, high_whisker, high_outlier

*             When set to false you can supply any number of values and the box plot will

*             be computed for you.  Default is false.

*       showOutliers - Set to true (default) to display outliers as circles

*       outlierIRQ - Interquartile range used to determine outliers.  Default 1.5

*       boxLineColor - Outline color of the box

*       boxFillColor - Fill color for the box

*       whiskerColor - Line color used for whiskers

*       outlierLineColor - Outline color of outlier circles

*       outlierFillColor - Fill color of the outlier circles

*       spotRadius - Radius of outlier circles

*       medianColor - Line color of the median line

*       target - Draw a target cross hair at the supplied value (default undefined)

*      

*   

*       

*   Examples:

*   $('#sparkline1').sparkline(myvalues, { lineColor: '#f00', fillColor: false });

*   $('.barsparks').sparkline('html', { type:'bar', height:'40px', barWidth:5 });

*   $('#tristate').sparkline([1,1,-1,1,0,0,-1], { type:'tristate' }):

*   $('#discrete').sparkline([1,3,4,5,5,3,4,5], { type:'discrete' });

*   $('#bullet').sparkline([10,12,12,9,7], { type:'bullet' });

*   $('#pie').sparkline([1,1,2], { type:'pie' });

*/

(function($) {

    // Provide a cross-browser interface to a few simple drawing primitives

    $.fn.simpledraw = function(width, height, use_existing) {

        if (use_existing && this[0].vcanvas) return this[0].vcanvas;

        if (width==undefined) width=$(this).innerWidth();

        if (height==undefined) height=$(this).innerHeight();

        if ($.browser.hasCanvas) {

            return new vcanvas_canvas(width, height, this);

        } else if ($.browser.msie) {

            return new vcanvas_vml(width, height, this);

        } else {

            return false;

        }

    };

    var pending = [];

    $.fn.sparkline = function(uservalues, options) {

        var options = $.extend({

            type : 'line',

            lineColor : '#00f',

            fillColor : '#cdf',

            defaultPixelsPerValue : 3,

            width : 'auto', 

            height : 'auto',

            composite : false

        }, options ? options : {});

        return this.each(function() {

            var render = function() {

                var values = (uservalues=='html' || uservalues==undefined) ? $(this).text().split(',') : uservalues;

                var width = options.width=='auto' ? values.length*options.defaultPixelsPerValue : options.width;

                if (options.height == 'auto') {

                    if (!options.composite || !this.vcanvas) {

                        // must be a better way to get the line height

                        var tmp = document.createElement('span');

                        tmp.innerHTML = 'a';

                        $(this).html(tmp);

                        height = $(tmp).innerHeight();

                        $(tmp).remove();

                    }

                } else {

                    height = options.height;

                }

                $.fn.sparkline[options.type].call(this, values, options, width, height);

            }

            // jQuery 1.3.0 completely changed the meaning of :hidden :-/

            if (($(this).html() && $(this).is(':hidden')) || ($.fn.jquery < "1.3.0" && $(this).parents().is(':hidden'))) {

                pending.push([this, render]);

            } else {

                render.call(this);

            }

        });

    };

    $.sparkline_display_visible = function() {

        for (var i=pending.length-1; i>=0; i--) {

            var el = pending[i][0];

            if ($(el).is(':visible') && !$(el).parents().is(':hidden')) {

                pending[i][1].call(el);

                pending.splice(i, 1);

            }

        }

    };

    $.fn.sparkline.line = function(values, options, width, height) {

        var options = $.extend({

            spotColor : '#f80',

            spotRadius : 1.5,

            minSpotColor : '#f80',

            maxSpotColor : '#f80',

            normalRangeMin : undefined,

            normalRangeMax : undefined,

            normalRangeColor : '#ccc',

            chartRangeMin : undefined,

            chartRangeMax : undefined

        }, options ? options : {});

        var xvalues = [], yvalues = [];

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

            var isstr = typeof(values[i])=='string';

            var isarray = typeof(values[i])=='object' && values[i] instanceof Array;

            var sp = isstr && values[i].split(':');

            if (isstr && sp.length == 2) { // x:y

                xvalues.push(Number(sp[0]));

                yvalues.push(Number(sp[1]));

            } else if (isarray) {

                xvalues.push(values[i][0]);

                yvalues.push(values[i][1]);

            } else {

                xvalues.push(i);

                yvalues.push(Number(values[i]));

            }

        }

        if (options.xvalues) {

            xvalues = options.xvalues;

        }

        var maxy = Math.max.apply(Math, yvalues);

        var maxyval = maxy;

        var miny = Math.min.apply(Math, yvalues);

        var minyval = miny;

        var maxx = Math.max.apply(Math, xvalues);

        var maxxval = maxx;

        var minx = Math.min.apply(Math, xvalues);

        var minxval = minx;

        if (options.normalRangeMin!=undefined) {

            if (options.normalRangeMin<miny)

                miny = options.normalRangeMin;

            if (options.normalRangeMax>maxy)

                maxy = options.normalRangeMax;

        }

        if (options.chartRangeMin!=undefined && options.chartRangeMin<miny) {

            miny = options.chartRangeMin;

        }

        if (options.chartRangeMax!=undefined && options.chartRangeMax>maxy) {

            maxy = options.chartRangeMax;

        }

        var rangex = maxx-minx == 0 ? 1 : maxx-minx;

        var rangey = maxy-miny == 0 ? 1 : maxy-miny;

        var vl = yvalues.length-1;

        if (vl<1) {

            this.innerHTML = '';

            return;

        }

        var target = $(this).simpledraw(width, height, options.composite);

        if (target) {

            var canvas_width = target.pixel_width;

            var canvas_height = target.pixel_height;

            var canvas_top = 0;

            var canvas_left = 0;

            if (options.spotRadius && (canvas_width < (options.spotRadius*4) || canvas_height < (options.spotRadius*4))) {

                options.spotRadius = 0;

            }

            if (options.spotRadius) {

                // adjust the canvas size as required so that spots will fit

                if (options.minSpotColor || (options.spotColor && yvalues[vl]==miny)) 

                    canvas_height -= Math.ceil(options.spotRadius);

                if (options.maxSpotColor || (options.spotColor && yvalues[vl]==maxy)) {

                    canvas_height -= Math.ceil(options.spotRadius);

                    canvas_top += Math.ceil(options.spotRadius);

                }

                if (options.minSpotColor || options.maxSpotColor && (yvalues[0]==miny || yvalues[0]==maxy)) {

                    canvas_left += Math.ceil(options.spotRadius);

                    canvas_width -= Math.ceil(options.spotRadius);

                }

                if (options.spotColor || (options.minSpotColor || options.maxSpotColor && (yvalues[vl]==miny||yvalues[vl]==maxy)))

                    canvas_width -= Math.ceil(options.spotRadius);

            }

            canvas_height--;

            if (options.normalRangeMin!=undefined) {

                var ytop = canvas_top+Math.round(canvas_height-(canvas_height*((options.normalRangeMax-miny)/rangey)));

                var height = Math.round((canvas_height*(options.normalRangeMax-options.normalRangeMin))/rangey);

                target.drawRect(canvas_left, ytop, canvas_width, height, undefined, options.normalRangeColor);

            }

            var path = [ [canvas_left, canvas_top+canvas_height] ];

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

                var x=xvalues[i], y=yvalues[i];

                path.push([canvas_left+Math.round((x-minx)*(canvas_width/rangex)), canvas_top+Math.round(canvas_height-(canvas_height*((y-miny)/rangey)))]);

            }

            if (options.fillColor) {

                path.push([canvas_left+canvas_width, canvas_top+canvas_height-1]);

                target.drawShape(path, undefined, options.fillColor);

                path.pop();

            }

            path[0] = [ canvas_left, canvas_top+Math.round(canvas_height-(canvas_height*((yvalues[0]-miny)/rangey))) ];

            target.drawShape(path, options.lineColor);

            if (options.spotRadius && options.spotColor) {

                target.drawCircle(canvas_left+canvas_width,  canvas_top+Math.round(canvas_height-(canvas_height*((yvalues[vl]-miny)/rangey))), options.spotRadius, undefined, options.spotColor);

            }

            if (maxy!=minyval) {

                if (options.spotRadius && options.minSpotColor) {

                    var x = xvalues[yvalues.indexOf(minyval)];

                    target.drawCircle(canvas_left+Math.round((x-minx)*(canvas_width/rangex)),  canvas_top+Math.round(canvas_height-(canvas_height*((minyval-miny)/rangey))), options.spotRadius, undefined, options.minSpotColor);

                }

                if (options.spotRadius && options.maxSpotColor) {

                    var x = xvalues[yvalues.indexOf(maxyval)];

                    target.drawCircle(canvas_left+Math.round((x-minx)*(canvas_width/rangex)),  canvas_top+Math.round(canvas_height-(canvas_height*((maxyval-miny)/rangey))), options.spotRadius, undefined, options.maxSpotColor);

                }

            }

        } else {

            // Remove the tag contents if sparklines aren't supported

            this.innerHTML = '';

        }

    };

    $.fn.sparkline.bar = function(values, options, width, height) {

        values = $.map(values, Number);

        var options = $.extend({

            type : 'bar',

            barColor : '#00f',

            negBarColor : '#f44',

            zeroColor: undefined,

            zeroAxis : undefined,

            barWidth : 4,

            barSpacing : 1,

            chartRangeMax: undefined,

            chartRangeMin: undefined

        }, options ? options : {});

        var width = (values.length * options.barWidth) + ((values.length-1) * options.barSpacing);

        var max = Math.max.apply(Math, values);

        var min = Math.min.apply(Math, values);

        if (options.chartRangeMin!=undefined && options.chartRangeMin<min) {