+
−/* Javascript plotting library for jQuery, v. 0.6.
+
− *
+
− * Released under the MIT license by IOLA, December 2007.
+
− *
+
− */
+
−
+
−// first an inline dependency, jquery.colorhelpers.js, we inline it here
+
−// for convenience
+
−
+
−/* Plugin for jQuery for working with colors.
+
− * 
+
− * Version 1.0.
+
− * 
+
− * Inspiration from jQuery color animation plugin by John Resig.
+
− *
+
− * Released under the MIT license by Ole Laursen, October 2009.
+
− *
+
− * Examples:
+
− *
+
− *   $.color.parse("#fff").scale('rgb', 0.25).add('a', -0.5).toString()
+
− *   var c = $.color.extract($("#mydiv"), 'background-color');
+
− *   console.log(c.r, c.g, c.b, c.a);
+
− *   $.color.make(100, 50, 25, 0.4).toString() // returns "rgba(100,50,25,0.4)"
+
− *
+
− * Note that .scale() and .add() work in-place instead of returning
+
− * new objects.
+
− */ 
+
−(function(){jQuery.color={};jQuery.color.make=function(E,D,B,C){var F={};F.r=E||0;F.g=D||0;F.b=B||0;F.a=C!=null?C:1;F.add=function(I,H){for(var G=0;G<I.length;++G){F[I.charAt(G)]+=H}return F.normalize()};F.scale=function(I,H){for(var G=0;G<I.length;++G){F[I.charAt(G)]*=H}return F.normalize()};F.toString=function(){if(F.a>=1){return"rgb("+[F.r,F.g,F.b].join(",")+")"}else{return"rgba("+[F.r,F.g,F.b,F.a].join(",")+")"}};F.normalize=function(){function G(I,J,H){return J<I?I:(J>H?H:J)}F.r=G(0,parseInt(F.r),255);F.g=G(0,parseInt(F.g),255);F.b=G(0,parseInt(F.b),255);F.a=G(0,F.a,1);return F};F.clone=function(){return jQuery.color.make(F.r,F.b,F.g,F.a)};return F.normalize()};jQuery.color.extract=function(C,B){var D;do{D=C.css(B).toLowerCase();if(D!=""&&D!="transparent"){break}C=C.parent()}while(!jQuery.nodeName(C.get(0),"body"));if(D=="rgba(0, 0, 0, 0)"){D="transparent"}return jQuery.color.parse(D)};jQuery.color.parse=function(E){var D,B=jQuery.color.make;if(D=/rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(E)){return B(parseInt(D[1],10),parseInt(D[2],10),parseInt(D[3],10))}if(D=/rgba\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(E)){return B(parseInt(D[1],10),parseInt(D[2],10),parseInt(D[3],10),parseFloat(D[4]))}if(D=/rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(E)){return B(parseFloat(D[1])*2.55,parseFloat(D[2])*2.55,parseFloat(D[3])*2.55)}if(D=/rgba\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(E)){return B(parseFloat(D[1])*2.55,parseFloat(D[2])*2.55,parseFloat(D[3])*2.55,parseFloat(D[4]))}if(D=/#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(E)){return B(parseInt(D[1],16),parseInt(D[2],16),parseInt(D[3],16))}if(D=/#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(E)){return B(parseInt(D[1]+D[1],16),parseInt(D[2]+D[2],16),parseInt(D[3]+D[3],16))}var C=jQuery.trim(E).toLowerCase();if(C=="transparent"){return B(255,255,255,0)}else{D=A[C];return B(D[0],D[1],D[2])}};var A={aqua:[0,255,255],azure:[240,255,255],beige:[245,245,220],black:[0,0,0],blue:[0,0,255],brown:[165,42,42],cyan:[0,255,255],darkblue:[0,0,139],darkcyan:[0,139,139],darkgrey:[169,169,169],darkgreen:[0,100,0],darkkhaki:[189,183,107],darkmagenta:[139,0,139],darkolivegreen:[85,107,47],darkorange:[255,140,0],darkorchid:[153,50,204],darkred:[139,0,0],darksalmon:[233,150,122],darkviolet:[148,0,211],fuchsia:[255,0,255],gold:[255,215,0],green:[0,128,0],indigo:[75,0,130],khaki:[240,230,140],lightblue:[173,216,230],lightcyan:[224,255,255],lightgreen:[144,238,144],lightgrey:[211,211,211],lightpink:[255,182,193],lightyellow:[255,255,224],lime:[0,255,0],magenta:[255,0,255],maroon:[128,0,0],navy:[0,0,128],olive:[128,128,0],orange:[255,165,0],pink:[255,192,203],purple:[128,0,128],violet:[128,0,128],red:[255,0,0],silver:[192,192,192],white:[255,255,255],yellow:[255,255,0]}})();
+
−
+
−// the actual Flot code
+
−(function($) {
+
−    function Plot(placeholder, data_, options_, plugins) {
+
−        // data is on the form:
+
−        //   [ series1, series2 ... ]
+
−        // where series is either just the data as [ [x1, y1], [x2, y2], ... ]
+
−        // or { data: [ [x1, y1], [x2, y2], ... ], label: "some label", ... }
+
−        
+
−        var series = [],
+
−            options = {
+
−                // the color theme used for graphs
+
−                colors: ["#edc240", "#afd8f8", "#cb4b4b", "#4da74d", "#9440ed"],
+
−                legend: {
+
−                    show: true,
+
−                    noColumns: 1, // number of colums in legend table
+
−                    labelFormatter: null, // fn: string -> string
+
−                    labelBoxBorderColor: "#ccc", // border color for the little label boxes
+
−                    container: null, // container (as jQuery object) to put legend in, null means default on top of graph
+
−                    position: "ne", // position of default legend container within plot
+
−                    margin: 5, // distance from grid edge to default legend container within plot
+
−                    backgroundColor: null, // null means auto-detect
+
−                    backgroundOpacity: 0.85 // set to 0 to avoid background
+
−                },
+
−                xaxis: {
+
−                    mode: null, // null or "time"
+
−                    transform: null, // null or f: number -> number to transform axis
+
−                    inverseTransform: null, // if transform is set, this should be the inverse function
+
−                    min: null, // min. value to show, null means set automatically
+
−                    max: null, // max. value to show, null means set automatically
+
−                    autoscaleMargin: null, // margin in % to add if auto-setting min/max
+
−                    ticks: null, // either [1, 3] or [[1, "a"], 3] or (fn: axis info -> ticks) or app. number of ticks for auto-ticks
+
−                    tickFormatter: null, // fn: number -> string
+
−                    labelWidth: null, // size of tick labels in pixels
+
−                    labelHeight: null,
+
−                    
+
−                    // mode specific options
+
−                    tickDecimals: null, // no. of decimals, null means auto
+
−                    tickSize: null, // number or [number, "unit"]
+
−                    minTickSize: null, // number or [number, "unit"]
+
−                    monthNames: null, // list of names of months
+
−                    timeformat: null, // format string to use
+
−                    twelveHourClock: false // 12 or 24 time in time mode
+
−                },
+
−                yaxis: {
+
−                    autoscaleMargin: 0.02
+
−                },
+
−                x2axis: {
+
−                    autoscaleMargin: null
+
−                },
+
−                y2axis: {
+
−                    autoscaleMargin: 0.02
+
−                },
+
−                series: {
+
−                    points: {
+
−                        show: false,
+
−                        radius: 3,
+
−                        lineWidth: 2, // in pixels
+
−                        fill: true,
+
−                        fillColor: "#ffffff"
+
−                    },
+
−                    lines: {
+
−                        // we don't put in show: false so we can see
+
−                        // whether lines were actively disabled 
+
−                        lineWidth: 2, // in pixels
+
−                        fill: false,
+
−                        fillColor: null,
+
−                        steps: false
+
−                    },
+
−                    bars: {
+
−                        show: false,
+
−                        lineWidth: 2, // in pixels
+
−                        barWidth: 1, // in units of the x axis
+
−                        fill: true,
+
−                        fillColor: null,
+
−                        align: "left", // or "center" 
+
−                        horizontal: false // when horizontal, left is now top
+
−                    },
+
−                    shadowSize: 3
+
−                },
+
−                grid: {
+
−                    show: true,
+
−                    aboveData: false,
+
−                    color: "#545454", // primary color used for outline and labels
+
−                    backgroundColor: null, // null for transparent, else color
+
−                    tickColor: "rgba(0,0,0,0.15)", // color used for the ticks
+
−                    labelMargin: 5, // in pixels
+
−                    borderWidth: 2, // in pixels
+
−                    borderColor: null, // set if different from the grid color
+
−                    markings: null, // array of ranges or fn: axes -> array of ranges
+
−                    markingsColor: "#f4f4f4",
+
−                    markingsLineWidth: 2,
+
−                    // interactive stuff
+
−                    clickable: false,
+
−                    hoverable: false,
+
−                    autoHighlight: true, // highlight in case mouse is near
+
−                    mouseActiveRadius: 10 // how far the mouse can be away to activate an item
+
−                },
+
−                hooks: {}
+
−            },
+
−        canvas = null,      // the canvas for the plot itself
+
−        overlay = null,     // canvas for interactive stuff on top of plot
+
−        eventHolder = null, // jQuery object that events should be bound to
+
−        ctx = null, octx = null,
+
−        axes = { xaxis: {}, yaxis: {}, x2axis: {}, y2axis: {} },
+
−        plotOffset = { left: 0, right: 0, top: 0, bottom: 0},
+
−        canvasWidth = 0, canvasHeight = 0,
+
−        plotWidth = 0, plotHeight = 0,
+
−        hooks = {
+
−            processOptions: [],
+
−            processRawData: [],
+
−            processDatapoints: [],
+
−            draw: [],
+
−            bindEvents: [],
+
−            drawOverlay: []
+
−        },
+
−        plot = this;
+
−
+
−        // public functions
+
−        plot.setData = setData;
+
−        plot.setupGrid = setupGrid;
+
−        plot.draw = draw;
+
−        plot.getPlaceholder = function() { return placeholder; };
+
−        plot.getCanvas = function() { return canvas; };
+
−        plot.getPlotOffset = function() { return plotOffset; };
+
−        plot.width = function () { return plotWidth; };
+
−        plot.height = function () { return plotHeight; };
+
−        plot.offset = function () {
+
−            var o = eventHolder.offset();
+
−            o.left += plotOffset.left;
+
−            o.top += plotOffset.top;
+
−            return o;
+
−        };
+
−        plot.getData = function() { return series; };
+
−        plot.getAxes = function() { return axes; };
+
−        plot.getOptions = function() { return options; };
+
−        plot.highlight = highlight;
+
−        plot.unhighlight = unhighlight;
+
−        plot.triggerRedrawOverlay = triggerRedrawOverlay;
+
−        plot.pointOffset = function(point) {
+
−            return { left: parseInt(axisSpecToRealAxis(point, "xaxis").p2c(+point.x) + plotOffset.left),
+
−                     top: parseInt(axisSpecToRealAxis(point, "yaxis").p2c(+point.y) + plotOffset.top) };
+
−        };
+
−        
+
−
+
−        // public attributes
+
−        plot.hooks = hooks;
+
−        
+
−        // initialize
+
−        initPlugins(plot);
+
−        parseOptions(options_);
+
−        constructCanvas();
+
−        setData(data_);
+
−        setupGrid();
+
−        draw();
+
−        bindEvents();
+
−
+
−
+
−        function executeHooks(hook, args) {
+
−            args = [plot].concat(args);
+
−            for (var i = 0; i < hook.length; ++i)
+
−                hook[i].apply(this, args);
+
−        }
+
−
+
−        function initPlugins() {
+
−            for (var i = 0; i < plugins.length; ++i) {
+
−                var p = plugins[i];
+
−                p.init(plot);
+
−                if (p.options)
+
−                    $.extend(true, options, p.options);
+
−            }
+
−        }
+
−        
+
−        function parseOptions(opts) {
+
−            $.extend(true, options, opts);
+
−            if (options.grid.borderColor == null)
+
−                options.grid.borderColor = options.grid.color;
+
−            // backwards compatibility, to be removed in future
+
−            if (options.xaxis.noTicks && options.xaxis.ticks == null)
+
−                options.xaxis.ticks = options.xaxis.noTicks;
+
−            if (options.yaxis.noTicks && options.yaxis.ticks == null)
+
−                options.yaxis.ticks = options.yaxis.noTicks;
+
−            if (options.grid.coloredAreas)
+
−                options.grid.markings = options.grid.coloredAreas;
+
−            if (options.grid.coloredAreasColor)
+
−                options.grid.markingsColor = options.grid.coloredAreasColor;
+
−            if (options.lines)
+
−                $.extend(true, options.series.lines, options.lines);
+
−            if (options.points)
+
−                $.extend(true, options.series.points, options.points);
+
−            if (options.bars)
+
−                $.extend(true, options.series.bars, options.bars);
+
−            if (options.shadowSize)
+
−                options.series.shadowSize = options.shadowSize;
+
−
+
−            for (var n in hooks)
+
−                if (options.hooks[n] && options.hooks[n].length)
+
−                    hooks[n] = hooks[n].concat(options.hooks[n]);
+
−
+
−            executeHooks(hooks.processOptions, [options]);
+
−        }
+
−
+
−        function setData(d) {
+
−            series = parseData(d);
+
−            fillInSeriesOptions();
+
−            processData();
+
−        }
+
−        
+
−        function parseData(d) {
+
−            var res = [];
+
−            for (var i = 0; i < d.length; ++i) {
+
−                var s = $.extend(true, {}, options.series);
+
−
+
−                if (d[i].data) {
+
−                    s.data = d[i].data; // move the data instead of deep-copy
+
−                    delete d[i].data;
+
−
+
−                    $.extend(true, s, d[i]);
+
−
+
−                    d[i].data = s.data;
+
−                }
+
−                else
+
−                    s.data = d[i];
+
−                res.push(s);
+
−            }
+
−
+
−            return res;
+
−        }
+
−        
+
−        function axisSpecToRealAxis(obj, attr) {
+
−            var a = obj[attr];
+
−            if (!a || a == 1)
+
−                return axes[attr];
+
−            if (typeof a == "number")
+
−                return axes[attr.charAt(0) + a + attr.slice(1)];
+
−            return a; // assume it's OK
+
−        }
+
−        
+
−        function fillInSeriesOptions() {
+
−            var i;
+
−            
+
−            // collect what we already got of colors
+
−            var neededColors = series.length,
+
−                usedColors = [],
+
−                assignedColors = [];
+
−            for (i = 0; i < series.length; ++i) {
+
−                var sc = series[i].color;
+
−                if (sc != null) {
+
−                    --neededColors;
+
−                    if (typeof sc == "number")
+
−                        assignedColors.push(sc);
+
−                    else
+
−                        usedColors.push($.color.parse(series[i].color));
+
−                }
+
−            }
+
−            
+
−            // we might need to generate more colors if higher indices
+
−            // are assigned
+
−            for (i = 0; i < assignedColors.length; ++i) {
+
−                neededColors = Math.max(neededColors, assignedColors[i] + 1);
+
−            }
+
−
+
−            // produce colors as needed
+
−            var colors = [], variation = 0;
+
−            i = 0;
+
−            while (colors.length < neededColors) {
+
−                var c;
+
−                if (options.colors.length == i) // check degenerate case
+
−                    c = $.color.make(100, 100, 100);
+
−                else
+
−                    c = $.color.parse(options.colors[i]);
+
−
+
−                // vary color if needed
+
−                var sign = variation % 2 == 1 ? -1 : 1;
+
−                c.scale('rgb', 1 + sign * Math.ceil(variation / 2) * 0.2)
+
−
+
−                // FIXME: if we're getting to close to something else,
+
−                // we should probably skip this one
+
−                colors.push(c);
+
−                
+
−                ++i;
+
−                if (i >= options.colors.length) {
+
−                    i = 0;
+
−                    ++variation;
+
−                }
+
−            }
+
−
+
−            // fill in the options
+
−            var colori = 0, s;
+
−            for (i = 0; i < series.length; ++i) {
+
−                s = series[i];
+
−                
+
−                // assign colors
+
−                if (s.color == null) {
+
−                    s.color = colors[colori].toString();
+
−                    ++colori;
+
−                }
+
−                else if (typeof s.color == "number")
+
−                    s.color = colors[s.color].toString();
+
−
+
−                // turn on lines automatically in case nothing is set
+
−                if (s.lines.show == null) {
+
−                    var v, show = true;
+
−                    for (v in s)
+
−                        if (s[v].show) {
+
−                            show = false;
+
−                            break;
+
−                        }
+
−                    if (show)
+
−                        s.lines.show = true;
+
−                }
+
−
+
−                // setup axes
+
−                s.xaxis = axisSpecToRealAxis(s, "xaxis");
+
−                s.yaxis = axisSpecToRealAxis(s, "yaxis");
+
−            }
+
−        }
+
−        
+
−        function processData() {
+
−            var topSentry = Number.POSITIVE_INFINITY,
+
−                bottomSentry = Number.NEGATIVE_INFINITY,
+
−                i, j, k, m, length,
+
−                s, points, ps, x, y, axis, val, f, p;
+
−
+
−            for (axis in axes) {
+
−                axes[axis].datamin = topSentry;
+
−                axes[axis].datamax = bottomSentry;
+
−                axes[axis].used = false;
+
−            }
+
−
+
−            function updateAxis(axis, min, max) {
+
−                if (min < axis.datamin)
+
−                    axis.datamin = min;
+
−                if (max > axis.datamax)
+
−                    axis.datamax = max;
+
−            }
+
−
+
−            for (i = 0; i < series.length; ++i) {
+
−                s = series[i];
+
−                s.datapoints = { points: [] };
+
−                
+
−                executeHooks(hooks.processRawData, [ s, s.data, s.datapoints ]);
+
−            }
+
−            
+
−            // first pass: clean and copy data
+
−            for (i = 0; i < series.length; ++i) {
+
−                s = series[i];
+
−
+
−                var data = s.data, format = s.datapoints.format;
+
−
+
−                if (!format) {
+
−                    format = [];
+
−                    // find out how to copy
+
−                    format.push({ x: true, number: true, required: true });
+
−                    format.push({ y: true, number: true, required: true });
+
−
+
−                    if (s.bars.show)
+
−                        format.push({ y: true, number: true, required: false, defaultValue: 0 });
+
−                    
+
−                    s.datapoints.format = format;
+
−                }
+
−
+
−                if (s.datapoints.pointsize != null)
+
−                    continue; // already filled in
+
−
+
−                if (s.datapoints.pointsize == null)
+
−                    s.datapoints.pointsize = format.length;
+
−                
+
−                ps = s.datapoints.pointsize;
+
−                points = s.datapoints.points;
+
−
+
−                insertSteps = s.lines.show && s.lines.steps;
+
−                s.xaxis.used = s.yaxis.used = true;
+
−                
+
−                for (j = k = 0; j < data.length; ++j, k += ps) {
+
−                    p = data[j];
+
−
+
−                    var nullify = p == null;
+
−                    if (!nullify) {
+
−                        for (m = 0; m < ps; ++m) {
+
−                            val = p[m];
+
−                            f = format[m];
+
−
+
−                            if (f) {
+
−                                if (f.number && val != null) {
+
−                                    val = +val; // convert to number
+
−                                    if (isNaN(val))
+
−                                        val = null;
+
−                                }
+
−
+
−                                if (val == null) {
+
−                                    if (f.required)
+
−                                        nullify = true;
+
−                                    
+
−                                    if (f.defaultValue != null)
+
−                                        val = f.defaultValue;
+
−                                }
+
−                            }
+
−                            
+
−                            points[k + m] = val;
+
−                        }
+
−                    }
+
−                    
+
−                    if (nullify) {
+
−                        for (m = 0; m < ps; ++m) {
+
−                            val = points[k + m];
+
−                            if (val != null) {
+
−                                f = format[m];
+
−                                // extract min/max info
+
−                                if (f.x)
+
−                                    updateAxis(s.xaxis, val, val);
+
−                                if (f.y)
+
−                                    updateAxis(s.yaxis, val, val);
+
−                            }
+
−                            points[k + m] = null;
+
−                        }
+
−                    }
+
−                    else {
+
−                        // a little bit of line specific stuff that
+
−                        // perhaps shouldn't be here, but lacking
+
−                        // better means...
+
−                        if (insertSteps && k > 0
+
−                            && points[k - ps] != null
+
−                            && points[k - ps] != points[k]
+
−                            && points[k - ps + 1] != points[k + 1]) {
+
−                            // copy the point to make room for a middle point
+
−                            for (m = 0; m < ps; ++m)
+
−                                points[k + ps + m] = points[k + m];
+
−
+
−                            // middle point has same y
+
−                            points[k + 1] = points[k - ps + 1];
+
−
+
−                            // we've added a point, better reflect that
+
−                            k += ps;
+
−                        }
+
−                    }
+
−                }
+
−            }
+
−
+
−            // give the hooks a chance to run
+
−            for (i = 0; i < series.length; ++i) {
+
−                s = series[i];
+
−                
+
−                executeHooks(hooks.processDatapoints, [ s, s.datapoints]);
+
−            }
+
−
+
−            // second pass: find datamax/datamin for auto-scaling
+
−            for (i = 0; i < series.length; ++i) {
+
−                s = series[i];
+
−                points = s.datapoints.points,
+
−                ps = s.datapoints.pointsize;
+
−
+
−                var xmin = topSentry, ymin = topSentry,
+
−                    xmax = bottomSentry, ymax = bottomSentry;
+
−                
+
−                for (j = 0; j < points.length; j += ps) {
+
−                    if (points[j] == null)
+
−                        continue;
+
−
+
−                    for (m = 0; m < ps; ++m) {
+
−                        val = points[j + m];
+
−                        f = format[m];
+
−                        if (!f)
+
−                            continue;
+
−                        
+
−                        if (f.x) {
+
−                            if (val < xmin)
+
−                                xmin = val;
+
−                            if (val > xmax)
+
−                                xmax = val;
+
−                        }
+
−                        if (f.y) {
+
−                            if (val < ymin)
+
−                                ymin = val;
+
−                            if (val > ymax)
+
−                                ymax = val;
+
−                        }
+
−                    }
+
−                }
+
−                
+
−                if (s.bars.show) {
+
−                    // make sure we got room for the bar on the dancing floor
+
−                    var delta = s.bars.align == "left" ? 0 : -s.bars.barWidth/2;
+
−                    if (s.bars.horizontal) {
+
−                        ymin += delta;
+
−                        ymax += delta + s.bars.barWidth;
+
−                    }
+
−                    else {
+
−                        xmin += delta;
+
−                        xmax += delta + s.bars.barWidth;
+
−                    }
+
−                }
+
−                
+
−                updateAxis(s.xaxis, xmin, xmax);
+
−                updateAxis(s.yaxis, ymin, ymax);
+
−            }
+
−
+
−            for (axis in axes) {
+
−                if (axes[axis].datamin == topSentry)
+
−                    axes[axis].datamin = null;
+
−                if (axes[axis].datamax == bottomSentry)
+
−                    axes[axis].datamax = null;
+
−            }
+
−        }
+
−
+
−        function constructCanvas() {
+
−            function makeCanvas(width, height) {
+
−                var c = document.createElement('canvas');
+
−                c.width = width;
+
−                c.height = height;
+
−                if ($.browser.msie) // excanvas hack
+
−                    c = window.G_vmlCanvasManager.initElement(c);
+
−                return c;
+
−            }
+
−            
+
−            canvasWidth = placeholder.width();
+
−            canvasHeight = placeholder.height();
+
−            placeholder.html(""); // clear placeholder
+
−            if (placeholder.css("position") == 'static')
+
−                placeholder.css("position", "relative"); // for positioning labels and overlay
+
−
+
−            if (canvasWidth <= 0 || canvasHeight <= 0)
+
−                throw "Invalid dimensions for plot, width = " + canvasWidth + ", height = " + canvasHeight;
+
−
+
−            if ($.browser.msie) // excanvas hack
+
−                window.G_vmlCanvasManager.init_(document); // make sure everything is setup
+
−            
+
−            // the canvas
+
−            canvas = $(makeCanvas(canvasWidth, canvasHeight)).appendTo(placeholder).get(0);
+
−            ctx = canvas.getContext("2d");
+
−
+
−            // overlay canvas for interactive features
+
−            overlay = $(makeCanvas(canvasWidth, canvasHeight)).css({ position: 'absolute', left: 0, top: 0 }).appendTo(placeholder).get(0);
+
−            octx = overlay.getContext("2d");
+
−            octx.stroke();
+
−        }
+
−
+
−        function bindEvents() {
+
−            // we include the canvas in the event holder too, because IE 7
+
−            // sometimes has trouble with the stacking order
+
−            eventHolder = $([overlay, canvas]);
+
−
+
−            // bind events
+
−            if (options.grid.hoverable)
+
−                eventHolder.mousemove(onMouseMove);
+
−
+
−            if (options.grid.clickable)
+
−                eventHolder.click(onClick);
+
−
+
−            executeHooks(hooks.bindEvents, [eventHolder]);
+
−        }
+
−
+
−        function setupGrid() {
+
−            function setTransformationHelpers(axis, o) {
+
−                function identity(x) { return x; }
+
−                
+
−                var s, m, t = o.transform || identity,
+
−                    it = o.inverseTransform;
+
−                    
+
−                // add transformation helpers
+
−                if (axis == axes.xaxis || axis == axes.x2axis) {
+
−                    // precompute how much the axis is scaling a point
+
−                    // in canvas space
+
−                    s = axis.scale = plotWidth / (t(axis.max) - t(axis.min));
+
−                    m = t(axis.min);
+
−
+
−                    // data point to canvas coordinate
+
−                    if (t == identity) // slight optimization
+
−                        axis.p2c = function (p) { return (p - m) * s; };
+
−                    else
+
−                        axis.p2c = function (p) { return (t(p) - m) * s; };
+
−                    // canvas coordinate to data point
+
−                    if (!it)
+
−                        axis.c2p = function (c) { return m + c / s; };
+
−                    else
+
−                        axis.c2p = function (c) { return it(m + c / s); };
+
−                }
+
−                else {
+
−                    s = axis.scale = plotHeight / (t(axis.max) - t(axis.min));
+
−                    m = t(axis.max);
+
−                    
+
−                    if (t == identity)
+
−                        axis.p2c = function (p) { return (m - p) * s; };
+
−                    else
+
−                        axis.p2c = function (p) { return (m - t(p)) * s; };
+
−                    if (!it)
+
−                        axis.c2p = function (c) { return m - c / s; };
+
−                    else
+
−                        axis.c2p = function (c) { return it(m - c / s); };
+
−                }
+
−            }
+
−
+
−            function measureLabels(axis, axisOptions) {
+
−                var i, labels = [], l;
+
−                
+
−                axis.labelWidth = axisOptions.labelWidth;
+
−                axis.labelHeight = axisOptions.labelHeight;
+
−
+
−                if (axis == axes.xaxis || axis == axes.x2axis) {
+
−                    // to avoid measuring the widths of the labels, we
+
−                    // construct fixed-size boxes and put the labels inside
+
−                    // them, we don't need the exact figures and the
+
−                    // fixed-size box content is easy to center
+
−                    if (axis.labelWidth == null)
+
−                        axis.labelWidth = canvasWidth / (axis.ticks.length > 0 ? axis.ticks.length : 1);
+
−
+
−                    // measure x label heights
+
−                    if (axis.labelHeight == null) {
+
−                        labels = [];
+
−                        for (i = 0; i < axis.ticks.length; ++i) {
+
−                            l = axis.ticks[i].label;
+
−                            if (l)
+
−                                labels.push('<div class="tickLabel" style="float:left;width:' + axis.labelWidth + 'px">' + l + '</div>');
+
−                        }
+
−                        
+
−                        if (labels.length > 0) {
+
−                            var dummyDiv = $('<div style="position:absolute;top:-10000px;width:10000px;font-size:smaller">'
+
−                                             + labels.join("") + '<div style="clear:left"></div></div>').appendTo(placeholder);
+
−                            axis.labelHeight = dummyDiv.height();
+
−                            dummyDiv.remove();
+
−                        }
+
−                    }
+
−                }
+
−                else if (axis.labelWidth == null || axis.labelHeight == null) {
+
−                    // calculate y label dimensions
+
−                    for (i = 0; i < axis.ticks.length; ++i) {
+
−                        l = axis.ticks[i].label;
+
−                        if (l)
+
−                            labels.push('<div class="tickLabel">' + l + '</div>');
+
−                    }
+
−                    
+
−                    if (labels.length > 0) {
+
−                        var dummyDiv = $('<div style="position:absolute;top:-10000px;font-size:smaller">'
+
−                                         + labels.join("") + '</div>').appendTo(placeholder);
+
−                        if (axis.labelWidth == null)
+
−                            axis.labelWidth = dummyDiv.width();
+
−                        if (axis.labelHeight == null)
+
−                            axis.labelHeight = dummyDiv.find("div").height();
+
−                        dummyDiv.remove();
+
−                    }
+
−                    
+
−                }
+
−
+
−                if (axis.labelWidth == null)
+
−                    axis.labelWidth = 0;
+
−                if (axis.labelHeight == null)
+
−                    axis.labelHeight = 0;
+
−            }
+
−            
+
−            function setGridSpacing() {
+
−                // get the most space needed around the grid for things
+
−                // that may stick out
+
−                var maxOutset = options.grid.borderWidth;
+
−                for (i = 0; i < series.length; ++i)
+
−                    maxOutset = Math.max(maxOutset, 2 * (series[i].points.radius + series[i].points.lineWidth/2));
+
−                
+
−                plotOffset.left = plotOffset.right = plotOffset.top = plotOffset.bottom = maxOutset;
+
−                
+
−                var margin = options.grid.labelMargin + options.grid.borderWidth;
+
−                
+
−                if (axes.xaxis.labelHeight > 0)
+
−                    plotOffset.bottom = Math.max(maxOutset, axes.xaxis.labelHeight + margin);
+
−                if (axes.yaxis.labelWidth > 0)
+
−                    plotOffset.left = Math.max(maxOutset, axes.yaxis.labelWidth + margin);
+
−                if (axes.x2axis.labelHeight > 0)
+
−                    plotOffset.top = Math.max(maxOutset, axes.x2axis.labelHeight + margin);
+
−                if (axes.y2axis.labelWidth > 0)
+
−                    plotOffset.right = Math.max(maxOutset, axes.y2axis.labelWidth + margin);
+
−            
+
−                plotWidth = canvasWidth - plotOffset.left - plotOffset.right;
+
−                plotHeight = canvasHeight - plotOffset.bottom - plotOffset.top;
+
−            }
+
−            
+
−            var axis;
+
−            for (axis in axes)
+
−                setRange(axes[axis], options[axis]);
+
−            
+
−            if (options.grid.show) {
+
−                for (axis in axes) {
+
−                    prepareTickGeneration(axes[axis], options[axis]);
+
−                    setTicks(axes[axis], options[axis]);
+
−                    measureLabels(axes[axis], options[axis]);
+
−                }
+
−
+
−                setGridSpacing();
+
−            }
+
−            else {
+
−                plotOffset.left = plotOffset.right = plotOffset.top = plotOffset.bottom = 0;
+
−                plotWidth = canvasWidth;
+
−                plotHeight = canvasHeight;
+
−            }
+
−            
+
−            for (axis in axes)
+
−                setTransformationHelpers(axes[axis], options[axis]);
+
−
+
−            if (options.grid.show)
+
−                insertLabels();
+
−            
+
−            insertLegend();
+
−        }
+
−        
+
−        function setRange(axis, axisOptions) {
+
−            var min = +(axisOptions.min != null ? axisOptions.min : axis.datamin),
+
−                max = +(axisOptions.max != null ? axisOptions.max : axis.datamax),
+
−                delta = max - min;
+
−
+
−            if (delta == 0.0) {
+
−                // degenerate case
+
−                var widen = max == 0 ? 1 : 0.01;
+
−
+
−                if (axisOptions.min == null)
+
−                    min -= widen;
+
−                // alway widen max if we couldn't widen min to ensure we
+
−                // don't fall into min == max which doesn't work
+
−                if (axisOptions.max == null || axisOptions.min != null)
+
−                    max += widen;
+
−            }
+
−            else {
+
−                // consider autoscaling
+
−                var margin = axisOptions.autoscaleMargin;
+
−                if (margin != null) {
+
−                    if (axisOptions.min == null) {
+
−                        min -= delta * margin;
+
−                        // make sure we don't go below zero if all values
+
−                        // are positive
+
−                        if (min < 0 && axis.datamin != null && axis.datamin >= 0)
+
−                            min = 0;
+
−                    }
+
−                    if (axisOptions.max == null) {
+
−                        max += delta * margin;
+
−                        if (max > 0 && axis.datamax != null && axis.datamax <= 0)
+
−                            max = 0;
+
−                    }
+
−                }
+
−            }
+
−            axis.min = min;
+
−            axis.max = max;
+
−        }
+
−
+
−        function prepareTickGeneration(axis, axisOptions) {
+
−            // estimate number of ticks
+
−            var noTicks;
+
−            if (typeof axisOptions.ticks == "number" && axisOptions.ticks > 0)
+
−                noTicks = axisOptions.ticks;
+
−            else if (axis == axes.xaxis || axis == axes.x2axis)
+
−                 // heuristic based on the model a*sqrt(x) fitted to
+
−                 // some reasonable data points
+
−                noTicks = 0.3 * Math.sqrt(canvasWidth);
+
−            else
+
−                noTicks = 0.3 * Math.sqrt(canvasHeight);
+
−            
+
−            var delta = (axis.max - axis.min) / noTicks,
+
−                size, generator, unit, formatter, i, magn, norm;
+
−
+
−            if (axisOptions.mode == "time") {
+
−                // pretty handling of time
+
−                
+
−                // map of app. size of time units in milliseconds
+
−                var timeUnitSize = {
+
−                    "second": 1000,
+
−                    "minute": 60 * 1000,
+
−                    "hour": 60 * 60 * 1000,
+
−                    "day": 24 * 60 * 60 * 1000,
+
−                    "month": 30 * 24 * 60 * 60 * 1000,
+
−                    "year": 365.2425 * 24 * 60 * 60 * 1000
+
−                };
+
−
+
−
+
−                // the allowed tick sizes, after 1 year we use
+
−                // an integer algorithm
+
−                var spec = [
+
−                    [1, "second"], [2, "second"], [5, "second"], [10, "second"],
+
−                    [30, "second"], 
+
−                    [1, "minute"], [2, "minute"], [5, "minute"], [10, "minute"],
+
−                    [30, "minute"], 
+
−                    [1, "hour"], [2, "hour"], [4, "hour"],
+
−                    [8, "hour"], [12, "hour"],
+
−                    [1, "day"], [2, "day"], [3, "day"],
+
−                    [0.25, "month"], [0.5, "month"], [1, "month"],
+
−                    [2, "month"], [3, "month"], [6, "month"],
+
−                    [1, "year"]
+
−                ];
+
−
+
−                var minSize = 0;
+
−                if (axisOptions.minTickSize != null) {
+
−                    if (typeof axisOptions.tickSize == "number")
+
−                        minSize = axisOptions.tickSize;
+
−                    else
+
−                        minSize = axisOptions.minTickSize[0] * timeUnitSize[axisOptions.minTickSize[1]];
+
−                }
+
−
+
−                for (i = 0; i < spec.length - 1; ++i)
+
−                    if (delta < (spec[i][0] * timeUnitSize[spec[i][1]]
+
−                                 + spec[i + 1][0] * timeUnitSize[spec[i + 1][1]]) / 2
+
−                       && spec[i][0] * timeUnitSize[spec[i][1]] >= minSize)
+
−                        break;
+
−                size = spec[i][0];
+
−                unit = spec[i][1];
+
−                
+
−                // special-case the possibility of several years
+
−                if (unit == "year") {
+
−                    magn = Math.pow(10, Math.floor(Math.log(delta / timeUnitSize.year) / Math.LN10));
+
−                    norm = (delta / timeUnitSize.year) / magn;
+
−                    if (norm < 1.5)
+
−                        size = 1;
+
−                    else if (norm < 3)
+
−                        size = 2;
+
−                    else if (norm < 7.5)
+
−                        size = 5;
+
−                    else
+
−                        size = 10;
+
−
+
−                    size *= magn;
+
−                }
+
−
+
−                if (axisOptions.tickSize) {
+
−                    size = axisOptions.tickSize[0];
+
−                    unit = axisOptions.tickSize[1];
+
−                }
+
−                
+
−                generator = function(axis) {
+
−                    var ticks = [],
+
−                        tickSize = axis.tickSize[0], unit = axis.tickSize[1],
+
−                        d = new Date(axis.min);
+
−                    
+
−                    var step = tickSize * timeUnitSize[unit];
+
−
+
−                    if (unit == "second")
+
−                        d.setUTCSeconds(floorInBase(d.getUTCSeconds(), tickSize));
+
−                    if (unit == "minute")
+
−                        d.setUTCMinutes(floorInBase(d.getUTCMinutes(), tickSize));
+
−                    if (unit == "hour")
+
−                        d.setUTCHours(floorInBase(d.getUTCHours(), tickSize));
+
−                    if (unit == "month")
+
−                        d.setUTCMonth(floorInBase(d.getUTCMonth(), tickSize));
+
−                    if (unit == "year")
+
−                        d.setUTCFullYear(floorInBase(d.getUTCFullYear(), tickSize));
+
−                    
+
−                    // reset smaller components
+
−                    d.setUTCMilliseconds(0);
+
−                    if (step >= timeUnitSize.minute)
+
−                        d.setUTCSeconds(0);
+
−                    if (step >= timeUnitSize.hour)
+
−                        d.setUTCMinutes(0);
+
−                    if (step >= timeUnitSize.day)
+
−                        d.setUTCHours(0);
+
−                    if (step >= timeUnitSize.day * 4)
+
−                        d.setUTCDate(1);
+
−                    if (step >= timeUnitSize.year)
+
−                        d.setUTCMonth(0);
+
−
+
−
+
−                    var carry = 0, v = Number.NaN, prev;
+
−                    do {
+
−                        prev = v;
+
−                        v = d.getTime();
+
−                        ticks.push({ v: v, label: axis.tickFormatter(v, axis) });
+
−                        if (unit == "month") {
+
−                            if (tickSize < 1) {
+
−                                // a bit complicated - we'll divide the month
+
−                                // up but we need to take care of fractions
+
−                                // so we don't end up in the middle of a day
+
−                                d.setUTCDate(1);
+
−                                var start = d.getTime();
+
−                                d.setUTCMonth(d.getUTCMonth() + 1);
+
−                                var end = d.getTime();
+
−                                d.setTime(v + carry * timeUnitSize.hour + (end - start) * tickSize);
+
−                                carry = d.getUTCHours();
+
−                                d.setUTCHours(0);
+
−                            }
+
−                            else
+
−                                d.setUTCMonth(d.getUTCMonth() + tickSize);
+
−                        }
+
−                        else if (unit == "year") {
+
−                            d.setUTCFullYear(d.getUTCFullYear() + tickSize);
+
−                        }
+
−                        else
+
−                            d.setTime(v + step);
+
−                    } while (v < axis.max && v != prev);
+
−
+
−                    return ticks;
+
−                };
+
−
+
−                formatter = function (v, axis) {
+
−                    var d = new Date(v);
+
−
+
−                    // first check global format
+
−                    if (axisOptions.timeformat != null)
+
−                        return $.plot.formatDate(d, axisOptions.timeformat, axisOptions.monthNames);
+
−                    
+
−                    var t = axis.tickSize[0] * timeUnitSize[axis.tickSize[1]];
+
−                    var span = axis.max - axis.min;
+
−                    var suffix = (axisOptions.twelveHourClock) ? " %p" : "";
+
−                    
+
−                    if (t < timeUnitSize.minute)
+
−                        fmt = "%h:%M:%S" + suffix;
+
−                    else if (t < timeUnitSize.day) {
+
−                        if (span < 2 * timeUnitSize.day)
+
−                            fmt = "%h:%M" + suffix;
+
−                        else
+
−                            fmt = "%b %d %h:%M" + suffix;
+
−                    }
+
−                    else if (t < timeUnitSize.month)
+
−                        fmt = "%b %d";
+
−                    else if (t < timeUnitSize.year) {
+
−                        if (span < timeUnitSize.year)
+
−                            fmt = "%b";
+
−                        else
+
−                            fmt = "%b %y";
+
−                    }
+
−                    else
+
−                        fmt = "%y";
+
−                    
+
−                    return $.plot.formatDate(d, fmt, axisOptions.monthNames);
+
−                };
+
−            }
+
−            else {
+
−                // pretty rounding of base-10 numbers
+
−                var maxDec = axisOptions.tickDecimals;
+
−                var dec = -Math.floor(Math.log(delta) / Math.LN10);
+
−                if (maxDec != null && dec > maxDec)
+
−                    dec = maxDec;
+
−
+
−                magn = Math.pow(10, -dec);
+
−                norm = delta / magn; // norm is between 1.0 and 10.0
+
−                
+
−                if (norm < 1.5)
+
−                    size = 1;
+
−                else if (norm < 3) {
+
−                    size = 2;
+
−                    // special case for 2.5, requires an extra decimal
+
−                    if (norm > 2.25 && (maxDec == null || dec + 1 <= maxDec)) {
+
−                        size = 2.5;
+
−                        ++dec;
+
−                    }
+
−                }
+
−                else if (norm < 7.5)
+
−                    size = 5;
+
−                else
+
−                    size = 10;
+
−
+
−                size *= magn;
+
−                
+
−                if (axisOptions.minTickSize != null && size < axisOptions.minTickSize)
+
−                    size = axisOptions.minTickSize;
+
−
+
−                if (axisOptions.tickSize != null)
+
−                    size = axisOptions.tickSize;
+
−
+
−                axis.tickDecimals = Math.max(0, (maxDec != null) ? maxDec : dec);
+
−
+
−                generator = function (axis) {
+
−                    var ticks = [];
+
−
+
−                    // spew out all possible ticks
+
−                    var start = floorInBase(axis.min, axis.tickSize),
+
−                        i = 0, v = Number.NaN, prev;
+
−                    do {
+
−                        prev = v;
+
−                        v = start + i * axis.tickSize;
+
−                        ticks.push({ v: v, label: axis.tickFormatter(v, axis) });
+
−                        ++i;
+
−                    } while (v < axis.max && v != prev);
+
−                    return ticks;
+
−                };
+
−
+
−                formatter = function (v, axis) {
+
−                    return v.toFixed(axis.tickDecimals);
+
−                };
+
−            }
+
−
+
−            axis.tickSize = unit ? [size, unit] : size;
+
−            axis.tickGenerator = generator;
+
−            if ($.isFunction(axisOptions.tickFormatter))
+
−                axis.tickFormatter = function (v, axis) { return "" + axisOptions.tickFormatter(v, axis); };
+
−            else
+
−                axis.tickFormatter = formatter;
+
−        }
+
−        
+
−        function setTicks(axis, axisOptions) {
+
−            axis.ticks = [];
+
−
+
−            if (!axis.used)
+
−                return;
+
−            
+
−            if (axisOptions.ticks == null)
+
−                axis.ticks = axis.tickGenerator(axis);
+
−            else if (typeof axisOptions.ticks == "number") {
+
−                if (axisOptions.ticks > 0)
+
−                    axis.ticks = axis.tickGenerator(axis);
+
−            }
+
−            else if (axisOptions.ticks) {
+
−                var ticks = axisOptions.ticks;
+
−
+
−                if ($.isFunction(ticks))
+
−                    // generate the ticks
+
−                    ticks = ticks({ min: axis.min, max: axis.max });
+
−                
+
−                // clean up the user-supplied ticks, copy them over
+
−                var i, v;
+
−                for (i = 0; i < ticks.length; ++i) {
+
−                    var label = null;
+
−                    var t = ticks[i];
+
−                    if (typeof t == "object") {
+
−                        v = t[0];
+
−                        if (t.length > 1)
+
−                            label = t[1];
+
−                    }
+
−                    else
+
−                        v = t;
+
−                    if (label == null)
+
−                        label = axis.tickFormatter(v, axis);
+
−                    axis.ticks[i] = { v: v, label: label };
+
−                }
+
−            }
+
−
+
−            if (axisOptions.autoscaleMargin != null && axis.ticks.length > 0) {
+
−                // snap to ticks
+
−                if (axisOptions.min == null)
+
−                    axis.min = Math.min(axis.min, axis.ticks[0].v);
+
−                if (axisOptions.max == null && axis.ticks.length > 1)
+
−                    axis.max = Math.max(axis.max, axis.ticks[axis.ticks.length - 1].v);
+
−            }
+
−        }
+
−      
+
−        function draw() {
+
−            ctx.clearRect(0, 0, canvasWidth, canvasHeight);
+
−
+
−            var grid = options.grid;
+
−            
+
−            if (grid.show && !grid.aboveData)
+
−                drawGrid();
+
−
+
−            for (var i = 0; i < series.length; ++i)
+
−                drawSeries(series[i]);
+
−
+
−            executeHooks(hooks.draw, [ctx]);
+
−            
+
−            if (grid.show && grid.aboveData)
+
−                drawGrid();
+
−        }
+
−
+
−        function extractRange(ranges, coord) {
+
−            var firstAxis = coord + "axis",
+
−                secondaryAxis = coord + "2axis",
+
−                axis, from, to, reverse;
+
−
+
−            if (ranges[firstAxis]) {
+
−                axis = axes[firstAxis];
+
−                from = ranges[firstAxis].from;
+
−                to = ranges[firstAxis].to;
+
−            }
+
−            else if (ranges[secondaryAxis]) {
+
−                axis = axes[secondaryAxis];
+
−                from = ranges[secondaryAxis].from;
+
−                to = ranges[secondaryAxis].to;
+
−            }
+
−            else {
+
−                // backwards-compat stuff - to be removed in future
+
−                axis = axes[firstAxis];
+
−                from = ranges[coord + "1"];
+
−                to = ranges[coord + "2"];
+
−            }
+
−
+
−            // auto-reverse as an added bonus
+
−            if (from != null && to != null && from > to)
+
−                return { from: to, to: from, axis: axis };
+
−            
+
−            return { from: from, to: to, axis: axis };
+
−        }
+
−        
+
−        function drawGrid() {
+
−            var i;
+
−            
+
−            ctx.save();
+
−            ctx.translate(plotOffset.left, plotOffset.top);
+
−
+
−            // draw background, if any
+
−            if (options.grid.backgroundColor) {
+
−                ctx.fillStyle = getColorOrGradient(options.grid.backgroundColor, plotHeight, 0, "rgba(255, 255, 255, 0)");
+
−                ctx.fillRect(0, 0, plotWidth, plotHeight);
+
−            }
+
−
+
−            // draw markings
+
−            var markings = options.grid.markings;
+
−            if (markings) {
+
−                if ($.isFunction(markings))
+
−                    // xmin etc. are backwards-compatible, to be removed in future
+
−                    markings = markings({ xmin: axes.xaxis.min, xmax: axes.xaxis.max, ymin: axes.yaxis.min, ymax: axes.yaxis.max, xaxis: axes.xaxis, yaxis: axes.yaxis, x2axis: axes.x2axis, y2axis: axes.y2axis });
+
−
+
−                for (i = 0; i < markings.length; ++i) {
+
−                    var m = markings[i],
+
−                        xrange = extractRange(m, "x"),
+
−                        yrange = extractRange(m, "y");
+
−
+
−                    // fill in missing
+
−                    if (xrange.from == null)
+
−                        xrange.from = xrange.axis.min;
+
−                    if (xrange.to == null)
+
−                        xrange.to = xrange.axis.max;
+
−                    if (yrange.from == null)
+
−                        yrange.from = yrange.axis.min;
+
−                    if (yrange.to == null)
+
−                        yrange.to = yrange.axis.max;
+
−
+
−                    // clip
+
−                    if (xrange.to < xrange.axis.min || xrange.from > xrange.axis.max ||
+
−                        yrange.to < yrange.axis.min || yrange.from > yrange.axis.max)
+
−                        continue;
+
−
+
−                    xrange.from = Math.max(xrange.from, xrange.axis.min);
+
−                    xrange.to = Math.min(xrange.to, xrange.axis.max);
+
−                    yrange.from = Math.max(yrange.from, yrange.axis.min);
+
−                    yrange.to = Math.min(yrange.to, yrange.axis.max);
+
−
+
−                    if (xrange.from == xrange.to && yrange.from == yrange.to)
+
−                        continue;
+
−
+
−                    // then draw
+
−                    xrange.from = xrange.axis.p2c(xrange.from);
+
−                    xrange.to = xrange.axis.p2c(xrange.to);
+
−                    yrange.from = yrange.axis.p2c(yrange.from);
+
−                    yrange.to = yrange.axis.p2c(yrange.to);
+
−                    
+
−                    if (xrange.from == xrange.to || yrange.from == yrange.to) {
+
−                        // draw line
+
−                        ctx.beginPath();
+
−                        ctx.strokeStyle = m.color || options.grid.markingsColor;
+
−                        ctx.lineWidth = m.lineWidth || options.grid.markingsLineWidth;
+
−                        //ctx.moveTo(Math.floor(xrange.from), yrange.from);
+
−                        //ctx.lineTo(Math.floor(xrange.to), yrange.to);
+
−                        ctx.moveTo(xrange.from, yrange.from);
+
−                        ctx.lineTo(xrange.to, yrange.to);
+
−                        ctx.stroke();
+
−                    }
+
−                    else {
+
−                        // fill area
+
−                        ctx.fillStyle = m.color || options.grid.markingsColor;
+
−                        ctx.fillRect(xrange.from, yrange.to,
+
−                                     xrange.to - xrange.from,
+
−                                     yrange.from - yrange.to);
+
−                    }
+
−                }
+
−            }
+
−            
+
−            // draw the inner grid
+
−            ctx.lineWidth = 1;
+
−            ctx.strokeStyle = options.grid.tickColor;
+
−            ctx.beginPath();
+
−            var v, axis = axes.xaxis;
+
−            for (i = 0; i < axis.ticks.length; ++i) {
+
−                v = axis.ticks[i].v;
+
−                if (v <= axis.min || v >= axes.xaxis.max)
+
−                    continue;   // skip those lying on the axes
+
−
+
−                ctx.moveTo(Math.floor(axis.p2c(v)) + ctx.lineWidth/2, 0);
+
−                ctx.lineTo(Math.floor(axis.p2c(v)) + ctx.lineWidth/2, plotHeight);
+
−            }
+
−
+
−            axis = axes.yaxis;
+
−            for (i = 0; i < axis.ticks.length; ++i) {
+
−                v = axis.ticks[i].v;
+
−                if (v <= axis.min || v >= axis.max)
+
−                    continue;
+
−
+
−                ctx.moveTo(0, Math.floor(axis.p2c(v)) + ctx.lineWidth/2);
+
−                ctx.lineTo(plotWidth, Math.floor(axis.p2c(v)) + ctx.lineWidth/2);
+
−            }
+
−
+
−            axis = axes.x2axis;
+
−            for (i = 0; i < axis.ticks.length; ++i) {
+
−                v = axis.ticks[i].v;
+
−                if (v <= axis.min || v >= axis.max)
+
−                    continue;
+
−    
+
−                ctx.moveTo(Math.floor(axis.p2c(v)) + ctx.lineWidth/2, -5);
+
−                ctx.lineTo(Math.floor(axis.p2c(v)) + ctx.lineWidth/2, 5);
+
−            }
+
−
+
−            axis = axes.y2axis;
+
−            for (i = 0; i < axis.ticks.length; ++i) {
+
−                v = axis.ticks[i].v;
+
−                if (v <= axis.min || v >= axis.max)
+
−                    continue;
+
−
+
−                ctx.moveTo(plotWidth-5, Math.floor(axis.p2c(v)) + ctx.lineWidth/2);
+
−                ctx.lineTo(plotWidth+5, Math.floor(axis.p2c(v)) + ctx.lineWidth/2);
+
−            }
+
−            
+
−            ctx.stroke();
+
−            
+
−            if (options.grid.borderWidth) {
+
−                // draw border
+
−                var bw = options.grid.borderWidth;
+
−                ctx.lineWidth = bw;
+
−                ctx.strokeStyle = options.grid.borderColor;
+
−                ctx.strokeRect(-bw/2, -bw/2, plotWidth + bw, plotHeight + bw);
+
−            }
+
−
+
−            ctx.restore();
+
−        }
+
−
+
−        function insertLabels() {
+
−            placeholder.find(".tickLabels").remove();
+
−            
+
−            var html = ['<div class="tickLabels" style="font-size:smaller;color:' + options.grid.color + '">'];
+
−
+
−            function addLabels(axis, labelGenerator) {
+
−                for (var i = 0; i < axis.ticks.length; ++i) {
+
−                    var tick = axis.ticks[i];
+
−                    if (!tick.label || tick.v < axis.min || tick.v > axis.max)
+
−                        continue;
+
−                    html.push(labelGenerator(tick, axis));
+
−                }
+
−            }
+
−
+
−            var margin = options.grid.labelMargin + options.grid.borderWidth;
+
−            
+
−            addLabels(axes.xaxis, function (tick, axis) {
+
−                return '<div style="position:absolute;top:' + (plotOffset.top + plotHeight + margin) + 'px;left:' + Math.round(plotOffset.left + axis.p2c(tick.v) - axis.labelWidth/2) + 'px;width:' + axis.labelWidth + 'px;text-align:center" class="tickLabel">' + tick.label + "</div>";
+
−            });
+
−            
+
−            
+
−            addLabels(axes.yaxis, function (tick, axis) {
+
−                return '<div style="position:absolute;top:' + Math.round(plotOffset.top + axis.p2c(tick.v) - axis.labelHeight/2) + 'px;right:' + (plotOffset.right + plotWidth + margin) + 'px;width:' + axis.labelWidth + 'px;text-align:right" class="tickLabel">' + tick.label + "</div>";
+
−            });
+
−            
+
−            addLabels(axes.x2axis, function (tick, axis) {
+
−                return '<div style="position:absolute;bottom:' + (plotOffset.bottom + plotHeight + margin) + 'px;left:' + Math.round(plotOffset.left + axis.p2c(tick.v) - axis.labelWidth/2) + 'px;width:' + axis.labelWidth + 'px;text-align:center" class="tickLabel">' + tick.label + "</div>";
+
−            });
+
−            
+
−            addLabels(axes.y2axis, function (tick, axis) {
+
−                return '<div style="position:absolute;top:' + Math.round(plotOffset.top + axis.p2c(tick.v) - axis.labelHeight/2) + 'px;left:' + (plotOffset.left + plotWidth + margin) +'px;width:' + axis.labelWidth + 'px;text-align:left" class="tickLabel">' + tick.label + "</div>";
+
−            });
+
−
+
−            html.push('</div>');
+
−            
+
−            placeholder.append(html.join(""));
+
−        }
+
−
+
−        function drawSeries(series) {
+
−            if (series.lines.show)
+
−                drawSeriesLines(series);
+
−            if (series.bars.show)
+
−                drawSeriesBars(series);
+
−            if (series.points.show)
+
−                drawSeriesPoints(series);
+
−        }
+
−        
+
−        function drawSeriesLines(series) {
+
−            function plotLine(datapoints, xoffset, yoffset, axisx, axisy) {
+
−                var points = datapoints.points,
+
−                    ps = datapoints.pointsize,
+
−                    prevx = null, prevy = null;
+
−                
+
−                ctx.beginPath();
+
−                for (var i = ps; i < points.length; i += ps) {
+
−                    var x1 = points[i - ps], y1 = points[i - ps + 1],
+
−                        x2 = points[i], y2 = points[i + 1];
+
−                    
+
−                    if (x1 == null || x2 == null)
+
−                        continue;
+
−
+
−                    // clip with ymin
+
−                    if (y1 <= y2 && y1 < axisy.min) {
+
−                        if (y2 < axisy.min)
+
−                            continue;   // line segment is outside
+
−                        // compute new intersection point
+
−                        x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
+
−                        y1 = axisy.min;
+
−                    }
+
−                    else if (y2 <= y1 && y2 < axisy.min) {
+
−                        if (y1 < axisy.min)
+
−                            continue;
+
−                        x2 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
+
−                        y2 = axisy.min;
+
−                    }
+
−
+
−                    // clip with ymax
+
−                    if (y1 >= y2 && y1 > axisy.max) {
+
−                        if (y2 > axisy.max)
+
−                            continue;
+
−                        x1 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
+
−                        y1 = axisy.max;
+
−                    }
+
−                    else if (y2 >= y1 && y2 > axisy.max) {
+
−                        if (y1 > axisy.max)
+
−                            continue;
+
−                        x2 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
+
−                        y2 = axisy.max;
+
−                    }
+
−
+
−                    // clip with xmin
+
−                    if (x1 <= x2 && x1 < axisx.min) {
+
−                        if (x2 < axisx.min)
+
−                            continue;
+
−                        y1 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
+
−                        x1 = axisx.min;
+
−                    }
+
−                    else if (x2 <= x1 && x2 < axisx.min) {
+
−                        if (x1 < axisx.min)
+
−                            continue;
+
−                        y2 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
+
−                        x2 = axisx.min;
+
−                    }
+
−
+
−                    // clip with xmax
+
−                    if (x1 >= x2 && x1 > axisx.max) {
+
−                        if (x2 > axisx.max)
+
−                            continue;
+
−                        y1 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
+
−                        x1 = axisx.max;
+
−                    }
+
−                    else if (x2 >= x1 && x2 > axisx.max) {
+
−                        if (x1 > axisx.max)
+
−                            continue;
+
−                        y2 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
+
−                        x2 = axisx.max;
+
−                    }
+
−
+
−                    if (x1 != prevx || y1 != prevy)
+
−                        ctx.moveTo(axisx.p2c(x1) + xoffset, axisy.p2c(y1) + yoffset);
+
−                    
+
−                    prevx = x2;
+
−                    prevy = y2;
+
−                    ctx.lineTo(axisx.p2c(x2) + xoffset, axisy.p2c(y2) + yoffset);
+
−                }
+
−                ctx.stroke();
+
−            }
+
−
+
−            function plotLineArea(datapoints, axisx, axisy) {
+
−                var points = datapoints.points,
+
−                    ps = datapoints.pointsize,
+
−                    bottom = Math.min(Math.max(0, axisy.min), axisy.max),
+
−                    top, lastX = 0, areaOpen = false;
+
−                
+
−                for (var i = ps; i < points.length; i += ps) {
+
−                    var x1 = points[i - ps], y1 = points[i - ps + 1],
+
−                        x2 = points[i], y2 = points[i + 1];
+
−                    
+
−                    if (areaOpen && x1 != null && x2 == null) {
+
−                        // close area
+
−                        ctx.lineTo(axisx.p2c(lastX), axisy.p2c(bottom));
+
−                        ctx.fill();
+
−                        areaOpen = false;
+
−                        continue;
+
−                    }
+
−
+
−                    if (x1 == null || x2 == null)
+
−                        continue;
+
−
+
−                    // clip x values
+
−                    
+
−                    // clip with xmin
+
−                    if (x1 <= x2 && x1 < axisx.min) {
+
−                        if (x2 < axisx.min)
+
−                            continue;
+
−                        y1 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
+
−                        x1 = axisx.min;
+
−                    }
+
−                    else if (x2 <= x1 && x2 < axisx.min) {
+
−                        if (x1 < axisx.min)
+
−                            continue;
+
−                        y2 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
+
−                        x2 = axisx.min;
+
−                    }
+
−
+
−                    // clip with xmax
+
−                    if (x1 >= x2 && x1 > axisx.max) {
+
−                        if (x2 > axisx.max)
+
−                            continue;
+
−                        y1 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
+
−                        x1 = axisx.max;
+
−                    }
+
−                    else if (x2 >= x1 && x2 > axisx.max) {
+
−                        if (x1 > axisx.max)
+
−                            continue;
+
−                        y2 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
+
−                        x2 = axisx.max;
+
−                    }
+
−
+
−                    if (!areaOpen) {
+
−                        // open area
+
−                        ctx.beginPath();
+
−                        ctx.moveTo(axisx.p2c(x1), axisy.p2c(bottom));
+
−                        areaOpen = true;
+
−                    }
+
−                    
+
−                    // now first check the case where both is outside
+
−                    if (y1 >= axisy.max && y2 >= axisy.max) {
+
−                        ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.max));
+
−                        ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.max));
+
−                        lastX = x2;
+
−                        continue;
+
−                    }
+
−                    else if (y1 <= axisy.min && y2 <= axisy.min) {
+
−                        ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.min));
+
−                        ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.min));
+
−                        lastX = x2;
+
−                        continue;
+
−                    }
+
−                    
+
−                    // else it's a bit more complicated, there might
+
−                    // be two rectangles and two triangles we need to fill
+
−                    // in; to find these keep track of the current x values
+
−                    var x1old = x1, x2old = x2;
+
−
+
−                    // and clip the y values, without shortcutting
+
−                    
+
−                    // clip with ymin
+
−                    if (y1 <= y2 && y1 < axisy.min && y2 >= axisy.min) {
+
−                        x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
+
−                        y1 = axisy.min;
+
−                    }
+
−                    else if (y2 <= y1 && y2 < axisy.min && y1 >= axisy.min) {
+
−                        x2 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
+
−                        y2 = axisy.min;
+
−                    }
+
−
+
−                    // clip with ymax
+
−                    if (y1 >= y2 && y1 > axisy.max && y2 <= axisy.max) {
+
−                        x1 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
+
−                        y1 = axisy.max;
+
−                    }
+
−                    else if (y2 >= y1 && y2 > axisy.max && y1 <= axisy.max) {
+
−                        x2 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
+
−                        y2 = axisy.max;
+
−                    }
+
−
+
−
+
−                    // if the x value was changed we got a rectangle
+
−                    // to fill
+
−                    if (x1 != x1old) {
+
−                        if (y1 <= axisy.min)
+
−                            top = axisy.min;
+
−                        else
+
−                            top = axisy.max;
+
−                        
+
−                        ctx.lineTo(axisx.p2c(x1old), axisy.p2c(top));
+
−                        ctx.lineTo(axisx.p2c(x1), axisy.p2c(top));
+
−                    }
+
−                    
+
−                    // fill the triangles
+
−                    ctx.lineTo(axisx.p2c(x1), axisy.p2c(y1));
+
−                    ctx.lineTo(axisx.p2c(x2), axisy.p2c(y2));
+
−
+
−                    // fill the other rectangle if it's there
+
−                    if (x2 != x2old) {
+
−                        if (y2 <= axisy.min)
+
−                            top = axisy.min;
+
−                        else
+
−                            top = axisy.max;
+
−                        
+
−                        ctx.lineTo(axisx.p2c(x2), axisy.p2c(top));
+
−                        ctx.lineTo(axisx.p2c(x2old), axisy.p2c(top));
+
−                    }
+
−
+
−                    lastX = Math.max(x2, x2old);
+
−                }
+
−
+
−                if (areaOpen) {
+
−                    ctx.lineTo(axisx.p2c(lastX), axisy.p2c(bottom));
+
−                    ctx.fill();
+
−                }
+
−            }
+
−            
+
−            ctx.save();
+
−            ctx.translate(plotOffset.left, plotOffset.top);
+
−            ctx.lineJoin = "round";
+
−
+
−            var lw = series.lines.lineWidth,
+
−                sw = series.shadowSize;
+
−            // FIXME: consider another form of shadow when filling is turned on
+
−            if (lw > 0 && sw > 0) {
+
−                // draw shadow as a thick and thin line with transparency
+
−                ctx.lineWidth = sw;
+
−                ctx.strokeStyle = "rgba(0,0,0,0.1)";
+
−                // position shadow at angle from the mid of line
+
−                var angle = Math.PI/18;
+
−                plotLine(series.datapoints, Math.sin(angle) * (lw/2 + sw/2), Math.cos(angle) * (lw/2 + sw/2), series.xaxis, series.yaxis);
+
−                ctx.lineWidth = sw/2;
+
−                plotLine(series.datapoints, Math.sin(angle) * (lw/2 + sw/4), Math.cos(angle) * (lw/2 + sw/4), series.xaxis, series.yaxis);
+
−            }
+
−
+
−            ctx.lineWidth = lw;
+
−            ctx.strokeStyle = series.color;
+
−            var fillStyle = getFillStyle(series.lines, series.color, 0, plotHeight);
+
−            if (fillStyle) {
+
−                ctx.fillStyle = fillStyle;
+
−                plotLineArea(series.datapoints, series.xaxis, series.yaxis);
+
−            }
+
−
+
−            if (lw > 0)
+
−                plotLine(series.datapoints, 0, 0, series.xaxis, series.yaxis);
+
−            ctx.restore();
+
−        }
+
−
+
−        function drawSeriesPoints(series) {
+
−            function plotPoints(datapoints, radius, fillStyle, offset, circumference, axisx, axisy) {
+
−                var points = datapoints.points, ps = datapoints.pointsize;
+
−                
+
−                for (var i = 0; i < points.length; i += ps) {
+
−                    var x = points[i], y = points[i + 1];
+
−                    if (x == null || x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max)
+
−                        continue;
+
−                    
+
−                    ctx.beginPath();
+
−                    ctx.arc(axisx.p2c(x), axisy.p2c(y) + offset, radius, 0, circumference, false);
+
−                    if (fillStyle) {
+
−                        ctx.fillStyle = fillStyle;
+
−                        ctx.fill();
+
−                    }
+
−                    ctx.stroke();
+
−                }
+
−            }
+
−            
+
−            ctx.save();
+
−            ctx.translate(plotOffset.left, plotOffset.top);
+
−
+
−            var lw = series.lines.lineWidth,
+
−                sw = series.shadowSize,
+
−                radius = series.points.radius;
+
−            if (lw > 0 && sw > 0) {
+
−                // draw shadow in two steps
+
−                var w = sw / 2;
+
−                ctx.lineWidth = w;
+
−                ctx.strokeStyle = "rgba(0,0,0,0.1)";
+
−                plotPoints(series.datapoints, radius, null, w + w/2, Math.PI,
+
−                           series.xaxis, series.yaxis);
+
−
+
−                ctx.strokeStyle = "rgba(0,0,0,0.2)";
+
−                plotPoints(series.datapoints, radius, null, w/2, Math.PI,
+
−                           series.xaxis, series.yaxis);
+
−            }
+
−
+
−            ctx.lineWidth = lw;
+
−            ctx.strokeStyle = series.color;
+
−            plotPoints(series.datapoints, radius,
+
−                       getFillStyle(series.points, series.color), 0, 2 * Math.PI,
+
−                       series.xaxis, series.yaxis);
+
−            ctx.restore();
+
−        }
+
−
+
−        function drawBar(x, y, b, barLeft, barRight, offset, fillStyleCallback, axisx, axisy, c, horizontal) {
+
−            var left, right, bottom, top,
+
−                drawLeft, drawRight, drawTop, drawBottom,
+
−                tmp;
+
−
+
−            if (horizontal) {
+
−                drawBottom = drawRight = drawTop = true;
+
−                drawLeft = false;
+
−                left = b;
+
−                right = x;
+
−                top = y + barLeft;
+
−                bottom = y + barRight;
+
−
+
−                // account for negative bars
+
−                if (right < left) {
+
−                    tmp = right;
+
−                    right = left;
+
−                    left = tmp;
+
−                    drawLeft = true;
+
−                    drawRight = false;
+
−                }
+
−            }
+
−            else {
+
−                drawLeft = drawRight = drawTop = true;
+
−                drawBottom = false;
+
−                left = x + barLeft;
+
−                right = x + barRight;
+
−                bottom = b;
+
−                top = y;
+
−
+
−                // account for negative bars
+
−                if (top < bottom) {
+
−                    tmp = top;
+
−                    top = bottom;
+
−                    bottom = tmp;
+
−                    drawBottom = true;
+
−                    drawTop = false;
+
−                }
+
−            }
+
−           
+
−            // clip
+
−            if (right < axisx.min || left > axisx.max ||
+
−                top < axisy.min || bottom > axisy.max)
+
−                return;
+
−            
+
−            if (left < axisx.min) {
+
−                left = axisx.min;
+
−                drawLeft = false;
+
−            }
+
−
+
−            if (right > axisx.max) {
+
−                right = axisx.max;
+
−                drawRight = false;
+
−            }
+
−
+
−            if (bottom < axisy.min) {
+
−                bottom = axisy.min;
+
−                drawBottom = false;
+
−            }
+
−            
+
−            if (top > axisy.max) {
+
−                top = axisy.max;
+
−                drawTop = false;
+
−            }
+
−
+
−            left = axisx.p2c(left);
+
−            bottom = axisy.p2c(bottom);
+
−            right = axisx.p2c(right);
+
−            top = axisy.p2c(top);
+
−            
+
−            // fill the bar
+
−            if (fillStyleCallback) {
+
−                c.beginPath();
+
−                c.moveTo(left, bottom);
+
−                c.lineTo(left, top);
+
−                c.lineTo(right, top);
+
−                c.lineTo(right, bottom);
+
−                c.fillStyle = fillStyleCallback(bottom, top);
+
−                c.fill();
+
−            }
+
−
+
−            // draw outline
+
−            if (drawLeft || drawRight || drawTop || drawBottom) {
+
−                c.beginPath();
+
−
+
−                // FIXME: inline moveTo is buggy with excanvas
+
−                c.moveTo(left, bottom + offset);
+
−                if (drawLeft)
+
−                    c.lineTo(left, top + offset);
+
−                else
+
−                    c.moveTo(left, top + offset);
+
−                if (drawTop)
+
−                    c.lineTo(right, top + offset);
+
−                else
+
−                    c.moveTo(right, top + offset);
+
−                if (drawRight)
+
−                    c.lineTo(right, bottom + offset);
+
−                else
+
−                    c.moveTo(right, bottom + offset);
+
−                if (drawBottom)
+
−                    c.lineTo(left, bottom + offset);
+
−                else
+
−                    c.moveTo(left, bottom + offset);
+
−                c.stroke();
+
−            }
+
−        }
+
−        
+
−        function drawSeriesBars(series) {
+
−            function plotBars(datapoints, barLeft, barRight, offset, fillStyleCallback, axisx, axisy) {
+
−                var points = datapoints.points, ps = datapoints.pointsize;
+
−                
+
−                for (var i = 0; i < points.length; i += ps) {
+
−                    if (points[i] == null)
+
−                        continue;
+
−                    drawBar(points[i], points[i + 1], points[i + 2], barLeft, barRight, offset, fillStyleCallback, axisx, axisy, ctx, series.bars.horizontal);
+
−                }
+
−            }
+
−
+
−            ctx.save();
+
−            ctx.translate(plotOffset.left, plotOffset.top);
+
−
+
−            // FIXME: figure out a way to add shadows (for instance along the right edge)
+
−            ctx.lineWidth = series.bars.lineWidth;
+
−            ctx.strokeStyle = series.color;
+
−            var barLeft = series.bars.align == "left" ? 0 : -series.bars.barWidth/2;
+
−            var fillStyleCallback = series.bars.fill ? function (bottom, top) { return getFillStyle(series.bars, series.color, bottom, top); } : null;
+
−            plotBars(series.datapoints, barLeft, barLeft + series.bars.barWidth, 0, fillStyleCallback, series.xaxis, series.yaxis);
+
−            ctx.restore();
+
−        }
+
−
+
−        function getFillStyle(filloptions, seriesColor, bottom, top) {
+
−            var fill = filloptions.fill;
+
−            if (!fill)
+
−                return null;
+
−
+
−            if (filloptions.fillColor)
+
−                return getColorOrGradient(filloptions.fillColor, bottom, top, seriesColor);
+
−            
+
−            var c = $.color.parse(seriesColor);
+
−            c.a = typeof fill == "number" ? fill : 0.4;
+
−            c.normalize();
+
−            return c.toString();
+
−        }
+
−        
+
−        function insertLegend() {
+
−            placeholder.find(".legend").remove();
+
−
+
−            if (!options.legend.show)
+
−                return;
+
−            
+
−            var fragments = [], rowStarted = false,
+
−                lf = options.legend.labelFormatter, s, label;
+
−            for (i = 0; i < series.length; ++i) {
+
−                s = series[i];
+
−                label = s.label;
+
−                if (!label)
+
−                    continue;
+
−                
+
−                if (i % options.legend.noColumns == 0) {
+
−                    if (rowStarted)
+
−                        fragments.push('</tr>');
+
−                    fragments.push('<tr>');
+
−                    rowStarted = true;
+
−                }
+
−
+
−                if (lf)
+
−                    label = lf(label, s);
+
−                
+
−                fragments.push(
+
−                    '<td class="legendColorBox"><div style="border:1px solid ' + options.legend.labelBoxBorderColor + ';padding:1px"><div style="width:4px;height:0;border:5px solid ' + s.color + ';overflow:hidden"></div></div></td>' +
+
−                    '<td class="legendLabel">' + label + '</td>');
+
−            }
+
−            if (rowStarted)
+
−                fragments.push('</tr>');
+
−            
+
−            if (fragments.length == 0)
+
−                return;
+
−
+
−            var table = '<table style="font-size:smaller;color:' + options.grid.color + '">' + fragments.join("") + '</table>';
+
−            if (options.legend.container != null)
+
−                $(options.legend.container).html(table);
+
−            else {
+
−                var pos = "",
+
−                    p = options.legend.position,
+
−                    m = options.legend.margin;
+
−                if (m[0] == null)
+
−                    m = [m, m];
+
−                if (p.charAt(0) == "n")
+
−                    pos += 'top:' + (m[1] + plotOffset.top) + 'px;';
+
−                else if (p.charAt(0) == "s")
+
−                    pos += 'bottom:' + (m[1] + plotOffset.bottom) + 'px;';
+
−                if (p.charAt(1) == "e")
+
−                    pos += 'right:' + (m[0] + plotOffset.right) + 'px;';
+
−                else if (p.charAt(1) == "w")
+
−                    pos += 'left:' + (m[0] + plotOffset.left) + 'px;';
+
−                var legend = $('<div class="legend">' + table.replace('style="', 'style="position:absolute;' + pos +';') + '</div>').appendTo(placeholder);
+
−                if (options.legend.backgroundOpacity != 0.0) {
+
−                    // put in the transparent background
+
−                    // separately to avoid blended labels and
+
−                    // label boxes
+
−                    var c = options.legend.backgroundColor;
+
−                    if (c == null) {
+
−                        c = options.grid.backgroundColor;
+
−                        if (c && typeof c == "string")
+
−                            c = $.color.parse(c);
+
−                        else
+
−                            c = $.color.extract(legend, 'background-color');
+
−                        c.a = 1;
+
−                        c = c.toString();
+
−                    }
+
−                    var div = legend.children();
+
−                    $('<div style="position:absolute;width:' + div.width() + 'px;height:' + div.height() + 'px;' + pos +'background-color:' + c + ';"> </div>').prependTo(legend).css('opacity', options.legend.backgroundOpacity);
+
−                }
+
−            }
+
−        }
+
−
+
−
+
−        // interactive features
+
−        
+
−        var highlights = [],
+
−            redrawTimeout = null;
+
−        
+
−        // returns the data item the mouse is over, or null if none is found
+
−        function findNearbyItem(mouseX, mouseY, seriesFilter) {
+
−            var maxDistance = options.grid.mouseActiveRadius,
+
−                smallestDistance = maxDistance * maxDistance + 1,
+
−                item = null, foundPoint = false, i, j;
+
−
+
−            for (i = 0; i < series.length; ++i) {
+
−                if (!seriesFilter(series[i]))
+
−                    continue;
+
−                
+
−                var s = series[i],
+
−                    axisx = s.xaxis,
+
−                    axisy = s.yaxis,
+
−                    points = s.datapoints.points,
+
−                    ps = s.datapoints.pointsize,
+
−                    mx = axisx.c2p(mouseX), // precompute some stuff to make the loop faster
+
−                    my = axisy.c2p(mouseY),
+
−                    maxx = maxDistance / axisx.scale,
+
−                    maxy = maxDistance / axisy.scale;
+
−
+
−                if (s.lines.show || s.points.show) {
+
−                    for (j = 0; j < points.length; j += ps) {
+
−                        var x = points[j], y = points[j + 1];
+
−                        if (x == null)
+
−                            continue;
+
−                        
+
−                        // For points and lines, the cursor must be within a
+
−                        // certain distance to the data point
+
−                        if (x - mx > maxx || x - mx < -maxx ||
+
−                            y - my > maxy || y - my < -maxy)
+
−                            continue;
+
−
+
−                        // We have to calculate distances in pixels, not in
+
−                        // data units, because the scales of the axes may be different
+
−                        var dx = Math.abs(axisx.p2c(x) - mouseX),
+
−                            dy = Math.abs(axisy.p2c(y) - mouseY),
+
−                            dist = dx * dx + dy * dy; // we save the sqrt
+
−
+
−                        // use <= to ensure last point takes precedence
+
−                        // (last generally means on top of)
+
−                        if (dist <= smallestDistance) {
+
−                            smallestDistance = dist;
+
−                            item = [i, j / ps];
+
−                        }
+
−                    }
+
−                }
+
−                    
+
−                if (s.bars.show && !item) { // no other point can be nearby
+
−                    var barLeft = s.bars.align == "left" ? 0 : -s.bars.barWidth/2,
+
−                        barRight = barLeft + s.bars.barWidth;
+
−                    
+
−                    for (j = 0; j < points.length; j += ps) {
+
−                        var x = points[j], y = points[j + 1], b = points[j + 2];
+
−                        if (x == null)
+
−                            continue;
+
−  
+
−                        // for a bar graph, the cursor must be inside the bar
+
−                        if (series[i].bars.horizontal ? 
+
−                            (mx <= Math.max(b, x) && mx >= Math.min(b, x) && 
+
−                             my >= y + barLeft && my <= y + barRight) :
+
−                            (mx >= x + barLeft && mx <= x + barRight &&
+
−                             my >= Math.min(b, y) && my <= Math.max(b, y)))
+
−                                item = [i, j / ps];
+
−                    }
+
−                }
+
−            }
+
−
+
−            if (item) {
+
−                i = item[0];
+
−                j = item[1];
+
−                ps = series[i].datapoints.pointsize;
+
−                
+
−                return { datapoint: series[i].datapoints.points.slice(j * ps, (j + 1) * ps),
+
−                         dataIndex: j,
+
−                         series: series[i],
+
−                         seriesIndex: i };
+
−            }
+
−            
+
−            return null;
+
−        }
+
−
+
−        function onMouseMove(e) {
+
−            if (options.grid.hoverable)
+
−                triggerClickHoverEvent("plothover", e,
+
−                                       function (s) { return s["hoverable"] != false; });
+
−        }
+
−        
+
−        function onClick(e) {
+
−            triggerClickHoverEvent("plotclick", e,
+
−                                   function (s) { return s["clickable"] != false; });
+
−        }
+
−
+
−        // trigger click or hover event (they send the same parameters
+
−        // so we share their code)
+
−        function triggerClickHoverEvent(eventname, event, seriesFilter) {
+
−            var offset = eventHolder.offset(),
+
−                pos = { pageX: event.pageX, pageY: event.pageY },
+
−                canvasX = event.pageX - offset.left - plotOffset.left,
+
−                canvasY = event.pageY - offset.top - plotOffset.top;
+
−
+
−            if (axes.xaxis.used)
+
−                pos.x = axes.xaxis.c2p(canvasX);
+
−            if (axes.yaxis.used)
+
−                pos.y = axes.yaxis.c2p(canvasY);
+
−            if (axes.x2axis.used)
+
−                pos.x2 = axes.x2axis.c2p(canvasX);
+
−            if (axes.y2axis.used)
+
−                pos.y2 = axes.y2axis.c2p(canvasY);
+
−
+
−            var item = findNearbyItem(canvasX, canvasY, seriesFilter);
+
−
+
−            if (item) {
+
−                // fill in mouse pos for any listeners out there
+
−                item.pageX = parseInt(item.series.xaxis.p2c(item.datapoint[0]) + offset.left + plotOffset.left);
+
−                item.pageY = parseInt(item.series.yaxis.p2c(item.datapoint[1]) + offset.top + plotOffset.top);
+
−            }
+
−
+
−            if (options.grid.autoHighlight) {
+
−                // clear auto-highlights
+
−                for (var i = 0; i < highlights.length; ++i) {
+
−                    var h = highlights[i];
+
−                    if (h.auto == eventname &&
+
−                        !(item && h.series == item.series && h.point == item.datapoint))
+
−                        unhighlight(h.series, h.point);
+
−                }
+
−                
+
−                if (item)
+
−                    highlight(item.series, item.datapoint, eventname);
+
−            }
+
−            
+
−            placeholder.trigger(eventname, [ pos, item ]);
+
−        }
+
−
+
−        function triggerRedrawOverlay() {
+
−            if (!redrawTimeout)
+
−                redrawTimeout = setTimeout(drawOverlay, 30);
+
−        }
+
−
+
−        function drawOverlay() {
+
−            redrawTimeout = null;
+
−
+
−            // draw highlights
+
−            octx.save();
+
−            octx.clearRect(0, 0, canvasWidth, canvasHeight);
+
−            octx.translate(plotOffset.left, plotOffset.top);
+
−            
+
−            var i, hi;
+
−            for (i = 0; i < highlights.length; ++i) {
+
−                hi = highlights[i];
+
−
+
−                if (hi.series.bars.show)
+
−                    drawBarHighlight(hi.series, hi.point);
+
−                else
+
−                    drawPointHighlight(hi.series, hi.point);
+
−            }
+
−            octx.restore();
+
−            
+
−            executeHooks(hooks.drawOverlay, [octx]);
+
−        }
+
−        
+
−        function highlight(s, point, auto) {
+
−            if (typeof s == "number")
+
−                s = series[s];
+
−
+
−            if (typeof point == "number")
+
−                point = s.data[point];
+
−
+
−            var i = indexOfHighlight(s, point);
+
−            if (i == -1) {
+
−                highlights.push({ series: s, point: point, auto: auto });
+
−
+
−                triggerRedrawOverlay();
+
−            }
+
−            else if (!auto)
+
−                highlights[i].auto = false;
+
−        }
+
−            
+
−        function unhighlight(s, point) {
+
−            if (s == null && point == null) {
+
−                highlights = [];
+
−                triggerRedrawOverlay();
+
−            }
+
−            
+
−            if (typeof s == "number")
+
−                s = series[s];
+
−
+
−            if (typeof point == "number")
+
−                point = s.data[point];
+
−
+
−            var i = indexOfHighlight(s, point);
+
−            if (i != -1) {
+
−                highlights.splice(i, 1);
+
−
+
−                triggerRedrawOverlay();
+
−            }
+
−        }
+
−        
+
−        function indexOfHighlight(s, p) {
+
−            for (var i = 0; i < highlights.length; ++i) {
+
−                var h = highlights[i];
+
−                if (h.series == s && h.point[0] == p[0]
+
−                    && h.point[1] == p[1])
+
−                    return i;
+
−            }
+
−            return -1;
+
−        }
+
−        
+
−        function drawPointHighlight(series, point) {
+
−            var x = point[0], y = point[1],
+
−                axisx = series.xaxis, axisy = series.yaxis;
+
−            
+
−            if (x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max)
+
−                return;
+
−            
+
−            var pointRadius = series.points.radius + series.points.lineWidth / 2;
+
−            octx.lineWidth = pointRadius;
+
−            octx.strokeStyle = $.color.parse(series.color).scale('a', 0.5).toString();
+
−            var radius = 1.5 * pointRadius;
+
−            octx.beginPath();
+
−            octx.arc(axisx.p2c(x), axisy.p2c(y), radius, 0, 2 * Math.PI, false);
+
−            octx.stroke();
+
−        }
+
−
+
−        function drawBarHighlight(series, point) {
+
−            octx.lineWidth = series.bars.lineWidth;
+
−            octx.strokeStyle = $.color.parse(series.color).scale('a', 0.5).toString();
+
−            var fillStyle = $.color.parse(series.color).scale('a', 0.5).toString();
+
−            var barLeft = series.bars.align == "left" ? 0 : -series.bars.barWidth/2;
+
−            drawBar(point[0], point[1], point[2] || 0, barLeft, barLeft + series.bars.barWidth,
+
−                    0, function () { return fillStyle; }, series.xaxis, series.yaxis, octx, series.bars.horizontal);
+
−        }
+
−
+
−        function getColorOrGradient(spec, bottom, top, defaultColor) {
+
−            if (typeof spec == "string")
+
−                return spec;
+
−            else {
+
−                // assume this is a gradient spec; IE currently only
+
−                // supports a simple vertical gradient properly, so that's
+
−                // what we support too
+
−                var gradient = ctx.createLinearGradient(0, top, 0, bottom);
+
−                
+
−                for (var i = 0, l = spec.colors.length; i < l; ++i) {
+
−                    var c = spec.colors[i];
+
−                    if (typeof c != "string") {
+
−                        c = $.color.parse(defaultColor).scale('rgb', c.brightness);
+
−                        c.a *= c.opacity;
+
−                        c = c.toString();
+
−                    }
+
−                    gradient.addColorStop(i / (l - 1), c);
+
−                }
+
−                
+
−                return gradient;
+
−            }
+
−        }
+
−    }
+
−
+
−    $.plot = function(placeholder, data, options) {
+
−        var plot = new Plot($(placeholder), data, options, $.plot.plugins);
+
−        /*var t0 = new Date();
+
−        var t1 = new Date();
+
−        var tstr = "time used (msecs): " + (t1.getTime() - t0.getTime())
+
−        if (window.console)
+
−            console.log(tstr);
+
−        else
+
−            alert(tstr);*/
+
−        return plot;
+
−    };
+
−
+
−    $.plot.plugins = [];
+
−
+
−    // returns a string with the date d formatted according to fmt
+
−    $.plot.formatDate = function(d, fmt, monthNames) {
+
−        var leftPad = function(n) {
+
−            n = "" + n;
+
−            return n.length == 1 ? "0" + n : n;
+
−        };
+
−        
+
−        var r = [];
+
−        var escape = false;
+
−        var hours = d.getUTCHours();
+
−        var isAM = hours < 12;
+
−        if (monthNames == null)
+
−            monthNames = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
+
−
+
−        if (fmt.search(/%p|%P/) != -1) {
+
−            if (hours > 12) {
+
−                hours = hours - 12;
+
−            } else if (hours == 0) {
+
−                hours = 12;
+
−            }
+
−        }
+
−        for (var i = 0; i < fmt.length; ++i) {
+
−            var c = fmt.charAt(i);
+
−            
+
−            if (escape) {
+
−                switch (c) {
+
−                case 'h': c = "" + hours; break;
+
−                case 'H': c = leftPad(hours); break;
+
−                case 'M': c = leftPad(d.getUTCMinutes()); break;
+
−                case 'S': c = leftPad(d.getUTCSeconds()); break;
+
−                case 'd': c = "" + d.getUTCDate(); break;
+
−                case 'm': c = "" + (d.getUTCMonth() + 1); break;
+
−                case 'y': c = "" + d.getUTCFullYear(); break;
+
−                case 'b': c = "" + monthNames[d.getUTCMonth()]; break;
+
−                case 'p': c = (isAM) ? ("" + "am") : ("" + "pm"); break;
+
−                case 'P': c = (isAM) ? ("" + "AM") : ("" + "PM"); break;
+
−                }
+
−                r.push(c);
+
−                escape = false;
+
−            }
+
−            else {
+
−                if (c == "%")
+
−                    escape = true;
+
−                else
+
−                    r.push(c);
+
−            }
+
−        }
+
−        return r.join("");
+
−    };
+
−    
+
−    // round to nearby lower multiple of base
+
−    function floorInBase(n, base) {
+
−        return base * Math.floor(n / base);
+
−    }
+
−    
+
−})(jQuery);