--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/pyams_skin/resources/js/ext/flot/jquery.flot.js Thu Feb 13 11:43:31 2020 +0100
@@ -0,0 +1,2786 @@
+/* Javascript plotting library for jQuery, version 3.0.0.
+
+Copyright (c) 2007-2014 IOLA and Ole Laursen.
+Licensed under the MIT license.
+
+*/
+
+// the actual Flot code
+(function($) {
+ "use strict";
+
+ var Canvas = window.Flot.Canvas;
+
+ function defaultTickGenerator(axis) {
+ var ticks = [],
+ start = $.plot.saturated.saturate($.plot.saturated.floorInBase(axis.min, axis.tickSize)),
+ i = 0,
+ v = Number.NaN,
+ prev;
+
+ if (start === -Number.MAX_VALUE) {
+ ticks.push(start);
+ start = $.plot.saturated.floorInBase(axis.min + axis.tickSize, axis.tickSize);
+ }
+
+ do {
+ prev = v;
+ //v = start + i * axis.tickSize;
+ v = $.plot.saturated.multiplyAdd(axis.tickSize, i, start);
+ ticks.push(v);
+ ++i;
+ } while (v < axis.max && v !== prev);
+
+ return ticks;
+ }
+
+ function defaultTickFormatter(value, axis, precision) {
+ var oldTickDecimals = axis.tickDecimals,
+ expPosition = ("" + value).indexOf("e");
+
+ if (expPosition !== -1) {
+ return expRepTickFormatter(value, axis, precision);
+ }
+
+ if (precision > 0) {
+ axis.tickDecimals = precision;
+ }
+
+ var factor = axis.tickDecimals ? parseFloat('1e' + axis.tickDecimals) : 1,
+ formatted = "" + Math.round(value * factor) / factor;
+
+ // If tickDecimals was specified, ensure that we have exactly that
+ // much precision; otherwise default to the value's own precision.
+ if (axis.tickDecimals != null) {
+ var decimal = formatted.indexOf("."),
+ decimalPrecision = decimal === -1 ? 0 : formatted.length - decimal - 1;
+ if (decimalPrecision < axis.tickDecimals) {
+ var decimals = ("" + factor).substr(1, axis.tickDecimals - decimalPrecision);
+ formatted = (decimalPrecision ? formatted : formatted + ".") + decimals;
+ }
+ }
+
+ axis.tickDecimals = oldTickDecimals;
+ return formatted;
+ };
+
+ function expRepTickFormatter(value, axis, precision) {
+ var expPosition = ("" + value).indexOf("e"),
+ exponentValue = parseInt(("" + value).substr(expPosition + 1)),
+ tenExponent = expPosition !== -1 ? exponentValue : (value > 0 ? Math.floor(Math.log(value) / Math.LN10) : 0),
+ roundWith = parseFloat('1e' + tenExponent),
+ x = value / roundWith;
+
+ if (precision) {
+ var updatedPrecision = recomputePrecision(value, precision);
+ return (value / roundWith).toFixed(updatedPrecision) + 'e' + tenExponent;
+ }
+
+ if (axis.tickDecimals > 0) {
+ return x.toFixed(recomputePrecision(value, axis.tickDecimals)) + 'e' + tenExponent;
+ }
+ return x.toFixed() + 'e' + tenExponent;
+ }
+
+ function recomputePrecision(num, precision) {
+ //for numbers close to zero, the precision from flot will be a big number
+ //while for big numbers, the precision will be negative
+ var log10Value = Math.log(Math.abs(num)) * Math.LOG10E,
+ newPrecision = Math.abs(log10Value + precision);
+
+ return newPrecision <= 20 ? Math.floor(newPrecision) : 20;
+ }
+
+ ///////////////////////////////////////////////////////////////////////////
+ // The top-level container for the entire plot.
+ 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"],
+ xaxis: {
+ show: null, // null = auto-detect, true = always, false = never
+ position: "bottom", // or "top"
+ mode: null, // null or "time"
+ font: null, // null (derived from CSS in placeholder) or object like { size: 11, lineHeight: 13, style: "italic", weight: "bold", family: "sans-serif", variant: "small-caps" }
+ color: null, // base color, labels, ticks
+ tickColor: null, // possibly different color of ticks, e.g. "rgba(0,0,0,0.15)"
+ 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 autoScale option is on "loose" mode,
+ autoScale: "exact", // Available modes: "none", "loose", "exact", "sliding-window"
+ windowSize: null, // null or number. This is the size of sliding-window.
+ growOnly: null, // grow only, useful for smoother auto-scale, the scales will grow to accomodate data but won't shrink back.
+ 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
+ showTickLabels: "major", // "none", "endpoints", "major", "all"
+ labelWidth: null, // size of tick labels in pixels
+ labelHeight: null,
+ reserveSpace: null, // whether to reserve space even if axis isn't shown
+ tickLength: null, // size in pixels of major tick marks
+ showMinorTicks: null, // true = show minor tick marks, false = hide minor tick marks
+ showTicks: null, // true = show tick marks, false = hide all tick marks
+ gridLines: null, // true = show grid lines, false = hide grid lines
+ alignTicksWithAxis: null, // axis number or null for no sync
+ tickDecimals: null, // no. of decimals, null means auto
+ tickSize: null, // number or [number, "unit"]
+ minTickSize: null, // number or [number, "unit"]
+ offset: { below: 0, above: 0 }, // the plot drawing offset. this is calculated by the flot.navigate for each axis
+ boxPosition: { centerX: 0, centerY: 0 } //position of the axis on the corresponding axis box
+ },
+ yaxis: {
+ autoScaleMargin: 0.02, // margin in % to add if autoScale option is on "loose" mode
+ autoScale: "loose", // Available modes: "none", "loose", "exact"
+ growOnly: null, // grow only, useful for smoother auto-scale, the scales will grow to accomodate data but won't shrink back.
+ position: "left", // or "right"
+ showTickLabels: "major", // "none", "endpoints", "major", "all"
+ offset: { below: 0, above: 0 }, // the plot drawing offset. this is calculated by the flot.navigate for each axis
+ boxPosition: { centerX: 0, centerY: 0 } //position of the axis on the corresponding axis box
+ },
+ xaxes: [],
+ yaxes: [],
+ series: {
+ points: {
+ show: false,
+ radius: 3,
+ lineWidth: 2, // in pixels
+ fill: true,
+ fillColor: "#ffffff",
+ symbol: 'circle' // or callback
+ },
+ lines: {
+ // we don't put in show: false so we can see
+ // whether lines were actively disabled
+ lineWidth: 1, // in pixels
+ fill: false,
+ fillColor: null,
+ steps: false
+ // Omit 'zero', so we can later default its value to
+ // match that of the 'fill' option.
+ },
+ bars: {
+ show: false,
+ lineWidth: 2, // in pixels
+ // barWidth: number or [number, absolute]
+ // when 'absolute' is false, 'number' is relative to the minimum distance between points for the series
+ // when 'absolute' is true, 'number' is considered to be in units of the x-axis
+ horizontal: false,
+ barWidth: 0.8,
+ fill: true,
+ fillColor: null,
+ align: "left", // "left", "right", or "center"
+ zero: true
+ },
+ shadowSize: 3,
+ highlightColor: null
+ },
+ grid: {
+ show: true,
+ aboveData: false,
+ color: "#545454", // primary color used for outline and labels
+ backgroundColor: null, // null for transparent, else color
+ borderColor: null, // set if different from the grid color
+ tickColor: null, // color for the ticks, e.g. "rgba(0,0,0,0.15)"
+ margin: 0, // distance from the canvas edge to the grid
+ labelMargin: 5, // in pixels
+ axisMargin: 8, // in pixels
+ borderWidth: 1, // in pixels
+ minBorderMargin: null, // in pixels, null means taken from points radius
+ 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: 15 // how far the mouse can be away to activate an item
+ },
+ interaction: {
+ redrawOverlayInterval: 1000 / 60 // time between updates, -1 means in same flow
+ },
+ hooks: {}
+ },
+ surface = 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,
+ xaxes = [],
+ yaxes = [],
+ plotOffset = {
+ left: 0,
+ right: 0,
+ top: 0,
+ bottom: 0
+ },
+ plotWidth = 0,
+ plotHeight = 0,
+ hooks = {
+ processOptions: [],
+ processRawData: [],
+ processDatapoints: [],
+ processOffset: [],
+ setupGrid: [],
+ adjustSeriesDataRange: [],
+ setRange: [],
+ drawBackground: [],
+ drawSeries: [],
+ drawAxis: [],
+ draw: [],
+ axisReserveSpace: [],
+ bindEvents: [],
+ drawOverlay: [],
+ resize: [],
+ shutdown: []
+ },
+ plot = this;
+
+ var eventManager = {};
+
+ // interactive features
+
+ var redrawTimeout = null;
+
+ // public functions
+ plot.setData = setData;
+ plot.setupGrid = setupGrid;
+ plot.draw = draw;
+ plot.getPlaceholder = function() {
+ return placeholder;
+ };
+ plot.getCanvas = function() {
+ return surface.element;
+ };
+ plot.getSurface = function() {
+ return surface;
+ };
+ plot.getEventHolder = function() {
+ return eventHolder[0];
+ };
+ 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() {
+ var res = {};
+ $.each(xaxes.concat(yaxes), function(_, axis) {
+ if (axis) {
+ res[axis.direction + (axis.n !== 1 ? axis.n : "") + "axis"] = axis;
+ }
+ });
+ return res;
+ };
+ plot.getXAxes = function() {
+ return xaxes;
+ };
+ plot.getYAxes = function() {
+ return yaxes;
+ };
+ plot.c2p = canvasToCartesianAxisCoords;
+ plot.p2c = cartesianAxisToCanvasCoords;
+ plot.getOptions = function() {
+ return options;
+ };
+ plot.triggerRedrawOverlay = triggerRedrawOverlay;
+ plot.pointOffset = function(point) {
+ return {
+ left: parseInt(xaxes[axisNumber(point, "x") - 1].p2c(+point.x) + plotOffset.left, 10),
+ top: parseInt(yaxes[axisNumber(point, "y") - 1].p2c(+point.y) + plotOffset.top, 10)
+ };
+ };
+ plot.shutdown = shutdown;
+ plot.destroy = function() {
+ shutdown();
+ placeholder.removeData("plot").empty();
+
+ series = [];
+ options = null;
+ surface = null;
+ overlay = null;
+ eventHolder = null;
+ ctx = null;
+ octx = null;
+ xaxes = [];
+ yaxes = [];
+ hooks = null;
+ plot = null;
+ };
+
+ plot.resize = function() {
+ var width = placeholder.width(),
+ height = placeholder.height();
+ surface.resize(width, height);
+ overlay.resize(width, height);
+
+ executeHooks(hooks.resize, [width, height]);
+ };
+
+ plot.clearTextCache = function () {
+ surface.clearCache();
+ overlay.clearCache();
+ };
+
+ plot.autoScaleAxis = autoScaleAxis;
+ plot.computeRangeForDataSeries = computeRangeForDataSeries;
+ plot.adjustSeriesDataRange = adjustSeriesDataRange;
+ plot.findNearbyItem = findNearbyItem;
+ plot.findNearbyInterpolationPoint = findNearbyInterpolationPoint;
+ plot.computeValuePrecision = computeValuePrecision;
+ plot.computeTickSize = computeTickSize;
+ plot.addEventHandler = addEventHandler;
+
+ // public attributes
+ plot.hooks = hooks;
+
+ // initialize
+ var MINOR_TICKS_COUNT_CONSTANT = $.plot.uiConstants.MINOR_TICKS_COUNT_CONSTANT;
+ var TICK_LENGTH_CONSTANT = $.plot.uiConstants.TICK_LENGTH_CONSTANT;
+ initPlugins(plot);
+ setupCanvases();
+ parseOptions(options_);
+ setData(data_);
+ setupGrid(true);
+ 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() {
+ // References to key classes, allowing plugins to modify them
+
+ var classes = {
+ Canvas: Canvas
+ };
+
+ for (var i = 0; i < plugins.length; ++i) {
+ var p = plugins[i];
+ p.init(plot, classes);
+ if (p.options) {
+ $.extend(true, options, p.options);
+ }
+ }
+ }
+
+ function parseOptions(opts) {
+ $.extend(true, options, opts);
+
+ // $.extend merges arrays, rather than replacing them. When less
+ // colors are provided than the size of the default palette, we
+ // end up with those colors plus the remaining defaults, which is
+ // not expected behavior; avoid it by replacing them here.
+
+ if (opts && opts.colors) {
+ options.colors = opts.colors;
+ }
+
+ if (options.xaxis.color == null) {
+ options.xaxis.color = $.color.parse(options.grid.color).scale('a', 0.22).toString();
+ }
+
+ if (options.yaxis.color == null) {
+ options.yaxis.color = $.color.parse(options.grid.color).scale('a', 0.22).toString();
+ }
+
+ if (options.xaxis.tickColor == null) {
+ // grid.tickColor for back-compatibility
+ options.xaxis.tickColor = options.grid.tickColor || options.xaxis.color;
+ }
+
+ if (options.yaxis.tickColor == null) {
+ // grid.tickColor for back-compatibility
+ options.yaxis.tickColor = options.grid.tickColor || options.yaxis.color;
+ }
+
+ if (options.grid.borderColor == null) {
+ options.grid.borderColor = options.grid.color;
+ }
+
+ if (options.grid.tickColor == null) {
+ options.grid.tickColor = $.color.parse(options.grid.color).scale('a', 0.22).toString();
+ }
+
+ // Fill in defaults for axis options, including any unspecified
+ // font-spec fields, if a font-spec was provided.
+
+ // If no x/y axis options were provided, create one of each anyway,
+ // since the rest of the code assumes that they exist.
+
+ var i, axisOptions, axisCount,
+ fontSize = placeholder.css("font-size"),
+ fontSizeDefault = fontSize ? +fontSize.replace("px", "") : 13,
+ fontDefaults = {
+ style: placeholder.css("font-style"),
+ size: Math.round(0.8 * fontSizeDefault),
+ variant: placeholder.css("font-variant"),
+ weight: placeholder.css("font-weight"),
+ family: placeholder.css("font-family")
+ };
+
+ axisCount = options.xaxes.length || 1;
+ for (i = 0; i < axisCount; ++i) {
+ axisOptions = options.xaxes[i];
+ if (axisOptions && !axisOptions.tickColor) {
+ axisOptions.tickColor = axisOptions.color;
+ }
+
+ axisOptions = $.extend(true, {}, options.xaxis, axisOptions);
+ options.xaxes[i] = axisOptions;
+
+ if (axisOptions.font) {
+ axisOptions.font = $.extend({}, fontDefaults, axisOptions.font);
+ if (!axisOptions.font.color) {
+ axisOptions.font.color = axisOptions.color;
+ }
+ if (!axisOptions.font.lineHeight) {
+ axisOptions.font.lineHeight = Math.round(axisOptions.font.size * 1.15);
+ }
+ }
+ }
+
+ axisCount = options.yaxes.length || 1;
+ for (i = 0; i < axisCount; ++i) {
+ axisOptions = options.yaxes[i];
+ if (axisOptions && !axisOptions.tickColor) {
+ axisOptions.tickColor = axisOptions.color;
+ }
+
+ axisOptions = $.extend(true, {}, options.yaxis, axisOptions);
+ options.yaxes[i] = axisOptions;
+
+ if (axisOptions.font) {
+ axisOptions.font = $.extend({}, fontDefaults, axisOptions.font);
+ if (!axisOptions.font.color) {
+ axisOptions.font.color = axisOptions.color;
+ }
+ if (!axisOptions.font.lineHeight) {
+ axisOptions.font.lineHeight = Math.round(axisOptions.font.size * 1.15);
+ }
+ }
+ }
+
+ // save options on axes for future reference
+ for (i = 0; i < options.xaxes.length; ++i) {
+ getOrCreateAxis(xaxes, i + 1).options = options.xaxes[i];
+ }
+
+ for (i = 0; i < options.yaxes.length; ++i) {
+ getOrCreateAxis(yaxes, i + 1).options = options.yaxes[i];
+ }
+
+ //process boxPosition options used for axis.box size
+ $.each(allAxes(), function(_, axis) {
+ axis.boxPosition = axis.options.boxPosition || {centerX: 0, centerY: 0};
+ });
+
+ // add hooks from options
+ 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) {
+ var oldseries = series;
+ series = parseData(d);
+ fillInSeriesOptions();
+ processData(oldseries);
+ }
+
+ function parseData(d) {
+ var res = [];
+ for (var i = 0; i < d.length; ++i) {
+ var s = $.extend(true, {}, options.series);
+
+ if (d[i].data != null) {
+ 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 axisNumber(obj, coord) {
+ var a = obj[coord + "axis"];
+ if (typeof a === "object") {
+ // if we got a real axis, extract number
+ a = a.n;
+ }
+
+ if (typeof a !== "number") {
+ a = 1; // default to first axis
+ }
+
+ return a;
+ }
+
+ function allAxes() {
+ // return flat array without annoying null entries
+ return xaxes.concat(yaxes).filter(function(a) {
+ return a;
+ });
+ }
+
+ // canvas to axis for cartesian axes
+ function canvasToCartesianAxisCoords(pos) {
+ // return an object with x/y corresponding to all used axes
+ var res = {},
+ i, axis;
+ for (i = 0; i < xaxes.length; ++i) {
+ axis = xaxes[i];
+ if (axis && axis.used) {
+ res["x" + axis.n] = axis.c2p(pos.left);
+ }
+ }
+
+ for (i = 0; i < yaxes.length; ++i) {
+ axis = yaxes[i];
+ if (axis && axis.used) {
+ res["y" + axis.n] = axis.c2p(pos.top);
+ }
+ }
+
+ if (res.x1 !== undefined) {
+ res.x = res.x1;
+ }
+
+ if (res.y1 !== undefined) {
+ res.y = res.y1;
+ }
+
+ return res;
+ }
+
+ // axis to canvas for cartesian axes
+ function cartesianAxisToCanvasCoords(pos) {
+ // get canvas coords from the first pair of x/y found in pos
+ var res = {},
+ i, axis, key;
+
+ for (i = 0; i < xaxes.length; ++i) {
+ axis = xaxes[i];
+ if (axis && axis.used) {
+ key = "x" + axis.n;
+ if (pos[key] == null && axis.n === 1) {
+ key = "x";
+ }
+
+ if (pos[key] != null) {
+ res.left = axis.p2c(pos[key]);
+ break;
+ }
+ }
+ }
+
+ for (i = 0; i < yaxes.length; ++i) {
+ axis = yaxes[i];
+ if (axis && axis.used) {
+ key = "y" + axis.n;
+ if (pos[key] == null && axis.n === 1) {
+ key = "y";
+ }
+
+ if (pos[key] != null) {
+ res.top = axis.p2c(pos[key]);
+ break;
+ }
+ }
+ }
+
+ return res;
+ }
+
+ function getOrCreateAxis(axes, number) {
+ if (!axes[number - 1]) {
+ axes[number - 1] = {
+ n: number, // save the number for future reference
+ direction: axes === xaxes ? "x" : "y",
+ options: $.extend(true, {}, axes === xaxes ? options.xaxis : options.yaxis)
+ };
+ }
+
+ return axes[number - 1];
+ }
+
+ function fillInSeriesOptions() {
+ var neededColors = series.length,
+ maxIndex = -1,
+ i;
+
+ // Subtract the number of series that already have fixed colors or
+ // color indexes from the number that we still need to generate.
+
+ for (i = 0; i < series.length; ++i) {
+ var sc = series[i].color;
+ if (sc != null) {
+ neededColors--;
+ if (typeof sc === "number" && sc > maxIndex) {
+ maxIndex = sc;
+ }
+ }
+ }
+
+ // If any of the series have fixed color indexes, then we need to
+ // generate at least as many colors as the highest index.
+
+ if (neededColors <= maxIndex) {
+ neededColors = maxIndex + 1;
+ }
+
+ // Generate all the colors, using first the option colors and then
+ // variations on those colors once they're exhausted.
+
+ var c, colors = [],
+ colorPool = options.colors,
+ colorPoolSize = colorPool.length,
+ variation = 0,
+ definedColors = Math.max(0, series.length - neededColors);
+
+ for (i = 0; i < neededColors; i++) {
+ c = $.color.parse(colorPool[(definedColors + i) % colorPoolSize] || "#666");
+
+ // Each time we exhaust the colors in the pool we adjust
+ // a scaling factor used to produce more variations on
+ // those colors. The factor alternates negative/positive
+ // to produce lighter/darker colors.
+
+ // Reset the variation after every few cycles, or else
+ // it will end up producing only white or black colors.
+
+ if (i % colorPoolSize === 0 && i) {
+ if (variation >= 0) {
+ if (variation < 0.5) {
+ variation = -variation - 0.2;
+ } else variation = 0;
+ } else variation = -variation;
+ }
+
+ colors[i] = c.scale('rgb', 1 + variation);
+ }
+
+ // Finalize the series options, filling in their colors
+
+ 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] && s[v].show) {
+ show = false;
+ break;
+ }
+ }
+
+ if (show) {
+ s.lines.show = true;
+ }
+ }
+
+ // If nothing was provided for lines.zero, default it to match
+ // lines.fill, since areas by default should extend to zero.
+
+ if (s.lines.zero == null) {
+ s.lines.zero = !!s.lines.fill;
+ }
+
+ // setup axes
+ s.xaxis = getOrCreateAxis(xaxes, axisNumber(s, "x"));
+ s.yaxis = getOrCreateAxis(yaxes, axisNumber(s, "y"));
+ }
+ }
+
+ function processData(prevSeries) {
+ var topSentry = Number.POSITIVE_INFINITY,
+ bottomSentry = Number.NEGATIVE_INFINITY,
+ i, j, k, m,
+ s, points, ps, val, f, p,
+ data, format;
+
+ function updateAxis(axis, min, max) {
+ if (min < axis.datamin && min !== -Infinity) {
+ axis.datamin = min;
+ }
+
+ if (max > axis.datamax && max !== Infinity) {
+ axis.datamax = max;
+ }
+ }
+
+ function reusePoints(prevSeries, i) {
+ if (prevSeries && prevSeries[i] && prevSeries[i].datapoints && prevSeries[i].datapoints.points) {
+ return prevSeries[i].datapoints.points;
+ }
+
+ return [];
+ }
+
+ $.each(allAxes(), function(_, axis) {
+ // init axis
+ if (axis.options.growOnly !== true) {
+ axis.datamin = topSentry;
+ axis.datamax = bottomSentry;
+ } else {
+ if (axis.datamin === undefined) {
+ axis.datamin = topSentry;
+ }
+ if (axis.datamax === undefined) {
+ axis.datamax = bottomSentry;
+ }
+ }
+ axis.used = false;
+ });
+
+ for (i = 0; i < series.length; ++i) {
+ s = series[i];
+ s.datapoints = {
+ points: []
+ };
+
+ if (s.datapoints.points.length === 0) {
+ s.datapoints.points = reusePoints(prevSeries, i);
+ }
+
+ executeHooks(hooks.processRawData, [s, s.data, s.datapoints]);
+ }
+
+ // first pass: clean and copy data
+ for (i = 0; i < series.length; ++i) {
+ s = series[i];
+
+ data = s.data;
+ format = s.datapoints.format;
+
+ if (!format) {
+ format = [];
+ // find out how to copy
+ format.push({
+ x: true,
+ y: false,
+ number: true,
+ required: true,
+ computeRange: s.xaxis.options.autoScale !== 'none',
+ defaultValue: null
+ });
+
+ format.push({
+ x: false,
+ y: true,
+ number: true,
+ required: true,
+ computeRange: s.yaxis.options.autoScale !== 'none',
+ defaultValue: null
+ });
+
+ if (s.stack || s.bars.show || (s.lines.show && s.lines.fill)) {
+ var expectedPs = s.datapoints.pointsize != null ? s.datapoints.pointsize : (s.data && s.data[0] && s.data[0].length ? s.data[0].length : 3);
+ if (expectedPs > 2) {
+ format.push({
+ x: false,
+ y: true,
+ number: true,
+ required: false,
+ computeRange: s.yaxis.options.autoScale !== 'none',
+ defaultValue: 0
+ });
+ }
+ }
+
+ s.datapoints.format = format;
+ }
+
+ s.xaxis.used = s.yaxis.used = true;
+
+ if (s.datapoints.pointsize != null) continue; // already filled in
+
+ s.datapoints.pointsize = format.length;
+ ps = s.datapoints.pointsize;
+ points = s.datapoints.points;
+
+ var insertSteps = s.lines.show && s.lines.steps;
+
+ 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.computeRange) {
+ if (f.x) {
+ updateAxis(s.xaxis, val, val);
+ }
+ if (f.y) {
+ updateAxis(s.yaxis, val, val);
+ }
+ }
+ }
+ points[k + m] = null;
+ }
+ }
+ }
+
+ points.length = k; //trims the internal buffer to the correct length
+ }
+
+ // 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];
+ format = s.datapoints.format;
+
+ if (format.every(function (f) { return !f.computeRange; })) {
+ continue;
+ }
+
+ var range = plot.adjustSeriesDataRange(s,
+ plot.computeRangeForDataSeries(s));
+
+ executeHooks(hooks.adjustSeriesDataRange, [s, range]);
+
+ updateAxis(s.xaxis, range.xmin, range.xmax);
+ updateAxis(s.yaxis, range.ymin, range.ymax);
+ }
+
+ $.each(allAxes(), function(_, axis) {
+ if (axis.datamin === topSentry) {
+ axis.datamin = null;
+ }
+
+ if (axis.datamax === bottomSentry) {
+ axis.datamax = null;
+ }
+ });
+ }
+
+ function setupCanvases() {
+ // Make sure the placeholder is clear of everything except canvases
+ // from a previous plot in this container that we'll try to re-use.
+
+ placeholder.css("padding", 0) // padding messes up the positioning
+ .children().filter(function() {
+ return !$(this).hasClass("flot-overlay") && !$(this).hasClass('flot-base');
+ }).remove();
+
+ if (placeholder.css("position") === 'static') {
+ placeholder.css("position", "relative"); // for positioning labels and overlay
+ }
+
+ surface = new Canvas("flot-base", placeholder[0]);
+ overlay = new Canvas("flot-overlay", placeholder[0]); // overlay canvas for interactive features
+
+ ctx = surface.context;
+ octx = overlay.context;
+
+ // define which element we're listening for events on
+ eventHolder = $(overlay.element).unbind();
+
+ // If we're re-using a plot object, shut down the old one
+
+ var existing = placeholder.data("plot");
+
+ if (existing) {
+ existing.shutdown();
+ overlay.clear();
+ }
+
+ // save in case we get replotted
+ placeholder.data("plot", plot);
+ }
+
+ function bindEvents() {
+ executeHooks(hooks.bindEvents, [eventHolder]);
+ }
+
+ function addEventHandler(event, handler, eventHolder, priority) {
+ var key = eventHolder + event;
+ var eventList = eventManager[key] || [];
+
+ eventList.push({"event": event, "handler": handler, "eventHolder": eventHolder, "priority": priority});
+ eventList.sort((a, b) => b.priority - a.priority );
+ eventList.forEach( eventData => {
+ eventData.eventHolder.unbind(eventData.event, eventData.handler);
+ eventData.eventHolder.bind(eventData.event, eventData.handler);
+ });
+
+ eventManager[key] = eventList;
+ }
+
+ function shutdown() {
+ if (redrawTimeout) {
+ clearTimeout(redrawTimeout);
+ }
+
+ executeHooks(hooks.shutdown, [eventHolder]);
+ }
+
+ function setTransformationHelpers(axis) {
+ // set helper functions on the axis, assumes plot area
+ // has been computed already
+
+ function identity(x) {
+ return x;
+ }
+
+ var s, m, t = axis.options.transform || identity,
+ it = axis.options.inverseTransform;
+
+ // precompute how much the axis is scaling a point
+ // in canvas space
+ if (axis.direction === "x") {
+ if (isFinite(t(axis.max) - t(axis.min))) {
+ s = axis.scale = plotWidth / Math.abs(t(axis.max) - t(axis.min));
+ } else {
+ s = axis.scale = 1 / Math.abs($.plot.saturated.delta(t(axis.min), t(axis.max), plotWidth));
+ }
+ m = Math.min(t(axis.max), t(axis.min));
+ } else {
+ if (isFinite(t(axis.max) - t(axis.min))) {
+ s = axis.scale = plotHeight / Math.abs(t(axis.max) - t(axis.min));
+ } else {
+ s = axis.scale = 1 / Math.abs($.plot.saturated.delta(t(axis.min), t(axis.max), plotHeight));
+ }
+ s = -s;
+ m = Math.max(t(axis.max), t(axis.min));
+ }
+
+ // data point to canvas coordinate
+ if (t === identity) {
+ // slight optimization
+ axis.p2c = function(p) {
+ if (isFinite(p - m)) {
+ return (p - m) * s;
+ } else {
+ return (p / 4 - m / 4) * s * 4;
+ }
+ };
+ } else {
+ axis.p2c = function(p) {
+ var tp = t(p);
+
+ if (isFinite(tp - m)) {
+ return (tp - m) * s;
+ } else {
+ return (tp / 4 - m / 4) * s * 4;
+ }
+ };
+ }
+
+ // 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);
+ };
+ }
+ }
+
+ function measureTickLabels(axis) {
+ var opts = axis.options,
+ ticks = opts.showTickLabels !== 'none' && axis.ticks ? axis.ticks : [],
+ showMajorTickLabels = opts.showTickLabels === 'major' || opts.showTickLabels === 'all',
+ showEndpointsTickLabels = opts.showTickLabels === 'endpoints' || opts.showTickLabels === 'all',
+ labelWidth = opts.labelWidth || 0,
+ labelHeight = opts.labelHeight || 0,
+ legacyStyles = axis.direction + "Axis " + axis.direction + axis.n + "Axis",
+ layer = "flot-" + axis.direction + "-axis flot-" + axis.direction + axis.n + "-axis " + legacyStyles,
+ font = opts.font || "flot-tick-label tickLabel";
+
+ for (var i = 0; i < ticks.length; ++i) {
+ var t = ticks[i];
+ var label = t.label;
+
+ if (!t.label ||
+ (showMajorTickLabels === false && i > 0 && i < ticks.length - 1) ||
+ (showEndpointsTickLabels === false && (i === 0 || i === ticks.length - 1))) {
+ continue;
+ }
+
+ if (typeof t.label === 'object') {
+ label = t.label.name;
+ }
+
+ var info = surface.getTextInfo(layer, label, font);
+
+ labelWidth = Math.max(labelWidth, info.width);
+ labelHeight = Math.max(labelHeight, info.height);
+ }
+
+ axis.labelWidth = opts.labelWidth || labelWidth;
+ axis.labelHeight = opts.labelHeight || labelHeight;
+ }
+
+ function allocateAxisBoxFirstPhase(axis) {
+ // find the bounding box of the axis by looking at label
+ // widths/heights and ticks, make room by diminishing the
+ // plotOffset; this first phase only looks at one
+ // dimension per axis, the other dimension depends on the
+ // other axes so will have to wait
+
+ // here reserve additional space
+ executeHooks(hooks.axisReserveSpace, [axis]);
+
+ var lw = axis.labelWidth,
+ lh = axis.labelHeight,
+ pos = axis.options.position,
+ isXAxis = axis.direction === "x",
+ tickLength = axis.options.tickLength,
+ showTicks = axis.options.showTicks,
+ showMinorTicks = axis.options.showMinorTicks,
+ gridLines = axis.options.gridLines,
+ axisMargin = options.grid.axisMargin,
+ padding = options.grid.labelMargin,
+ innermost = true,
+ outermost = true,
+ found = false;
+
+ // Determine the axis's position in its direction and on its side
+
+ $.each(isXAxis ? xaxes : yaxes, function(i, a) {
+ if (a && (a.show || a.reserveSpace)) {
+ if (a === axis) {
+ found = true;
+ } else if (a.options.position === pos) {
+ if (found) {
+ outermost = false;
+ } else {
+ innermost = false;
+ }
+ }
+ }
+ });
+
+ // The outermost axis on each side has no margin
+ if (outermost) {
+ axisMargin = 0;
+ }
+
+ // Set the default tickLength if necessary
+ if (tickLength == null) {
+ tickLength = TICK_LENGTH_CONSTANT;
+ }
+
+ // By default, major tick marks are visible
+ if (showTicks == null) {
+ showTicks = true;
+ }
+
+ // By default, minor tick marks are visible
+ if (showMinorTicks == null) {
+ showMinorTicks = true;
+ }
+
+ // By default, grid lines are visible
+ if (gridLines == null) {
+ if (innermost) {
+ gridLines = true;
+ } else {
+ gridLines = false;
+ }
+ }
+
+ if (!isNaN(+tickLength)) {
+ padding += showTicks ? +tickLength : 0;
+ }
+
+ if (isXAxis) {
+ lh += padding;
+
+ if (pos === "bottom") {
+ plotOffset.bottom += lh + axisMargin;
+ axis.box = {
+ top: surface.height - plotOffset.bottom,
+ height: lh
+ };
+ } else {
+ axis.box = {
+ top: plotOffset.top + axisMargin,
+ height: lh
+ };
+ plotOffset.top += lh + axisMargin;
+ }
+ } else {
+ lw += padding;
+
+ if (pos === "left") {
+ axis.box = {
+ left: plotOffset.left + axisMargin,
+ width: lw
+ };
+ plotOffset.left += lw + axisMargin;
+ } else {
+ plotOffset.right += lw + axisMargin;
+ axis.box = {
+ left: surface.width - plotOffset.right,
+ width: lw
+ };
+ }
+ }
+
+ // save for future reference
+ axis.position = pos;
+ axis.tickLength = tickLength;
+ axis.showMinorTicks = showMinorTicks;
+ axis.showTicks = showTicks;
+ axis.gridLines = gridLines;
+ axis.box.padding = padding;
+ axis.innermost = innermost;
+ }
+
+ function allocateAxisBoxSecondPhase(axis) {
+ // now that all axis boxes have been placed in one
+ // dimension, we can set the remaining dimension coordinates
+ if (axis.direction === "x") {
+ axis.box.left = plotOffset.left - axis.labelWidth / 2;
+ axis.box.width = surface.width - plotOffset.left - plotOffset.right + axis.labelWidth;
+ } else {
+ axis.box.top = plotOffset.top - axis.labelHeight / 2;
+ axis.box.height = surface.height - plotOffset.bottom - plotOffset.top + axis.labelHeight;
+ }
+ }
+
+ function adjustLayoutForThingsStickingOut() {
+ // possibly adjust plot offset to ensure everything stays
+ // inside the canvas and isn't clipped off
+
+ var minMargin = options.grid.minBorderMargin,
+ i;
+
+ // check stuff from the plot (FIXME: this should just read
+ // a value from the series, otherwise it's impossible to
+ // customize)
+ if (minMargin == null) {
+ minMargin = 0;
+ for (i = 0; i < series.length; ++i) {
+ minMargin = Math.max(minMargin, 2 * (series[i].points.radius + series[i].points.lineWidth / 2));
+ }
+ }
+
+ var a, offset = {},
+ margins = {
+ left: minMargin,
+ right: minMargin,
+ top: minMargin,
+ bottom: minMargin
+ };
+
+ // check axis labels, note we don't check the actual
+ // labels but instead use the overall width/height to not
+ // jump as much around with replots
+ $.each(allAxes(), function(_, axis) {
+ if (axis.reserveSpace && axis.ticks && axis.ticks.length) {
+ if (axis.direction === "x") {
+ margins.left = Math.max(margins.left, axis.labelWidth / 2);
+ margins.right = Math.max(margins.right, axis.labelWidth / 2);
+ } else {
+ margins.bottom = Math.max(margins.bottom, axis.labelHeight / 2);
+ margins.top = Math.max(margins.top, axis.labelHeight / 2);
+ }
+ }
+ });
+
+ for (a in margins) {
+ offset[a] = margins[a] - plotOffset[a];
+ }
+ $.each(xaxes.concat(yaxes), function(_, axis) {
+ alignAxisWithGrid(axis, offset, function (offset) {
+ return offset > 0;
+ });
+ });
+
+ plotOffset.left = Math.ceil(Math.max(margins.left, plotOffset.left));
+ plotOffset.right = Math.ceil(Math.max(margins.right, plotOffset.right));
+ plotOffset.top = Math.ceil(Math.max(margins.top, plotOffset.top));
+ plotOffset.bottom = Math.ceil(Math.max(margins.bottom, plotOffset.bottom));
+ }
+
+ function alignAxisWithGrid(axis, offset, isValid) {
+ if (axis.direction === "x") {
+ if (axis.position === "bottom" && isValid(offset.bottom)) {
+ axis.box.top -= Math.ceil(offset.bottom);
+ }
+ if (axis.position === "top" && isValid(offset.top)) {
+ axis.box.top += Math.ceil(offset.top);
+ }
+ } else {
+ if (axis.position === "left" && isValid(offset.left)) {
+ axis.box.left += Math.ceil(offset.left);
+ }
+ if (axis.position === "right" && isValid(offset.right)) {
+ axis.box.left -= Math.ceil(offset.right);
+ }
+ }
+ }
+
+ function setupGrid(autoScale) {
+ var i, a, axes = allAxes(),
+ showGrid = options.grid.show;
+
+ // Initialize the plot's offset from the edge of the canvas
+
+ for (a in plotOffset) {
+ plotOffset[a] = 0;
+ }
+
+ executeHooks(hooks.processOffset, [plotOffset]);
+
+ // If the grid is visible, add its border width to the offset
+ for (a in plotOffset) {
+ if (typeof (options.grid.borderWidth) === "object") {
+ plotOffset[a] += showGrid ? options.grid.borderWidth[a] : 0;
+ } else {
+ plotOffset[a] += showGrid ? options.grid.borderWidth : 0;
+ }
+ }
+
+ $.each(axes, function(_, axis) {
+ var axisOpts = axis.options;
+ axis.show = axisOpts.show == null ? axis.used : axisOpts.show;
+ axis.reserveSpace = axisOpts.reserveSpace == null ? axis.show : axisOpts.reserveSpace;
+ setupTickFormatter(axis);
+ executeHooks(hooks.setRange, [axis, autoScale]);
+ setRange(axis, autoScale);
+ });
+
+ if (showGrid) {
+ plotWidth = surface.width - plotOffset.left - plotOffset.right;
+ plotHeight = surface.height - plotOffset.bottom - plotOffset.top;
+
+ var allocatedAxes = $.grep(axes, function(axis) {
+ return axis.show || axis.reserveSpace;
+ });
+
+ $.each(allocatedAxes, function(_, axis) {
+ // make the ticks
+ setupTickGeneration(axis);
+ setMajorTicks(axis);
+ snapRangeToTicks(axis, axis.ticks, series);
+
+ //for computing the endpoints precision, transformationHelpers are needed
+ setTransformationHelpers(axis);
+ setEndpointTicks(axis, series);
+
+ // find labelWidth/Height for axis
+ measureTickLabels(axis);
+ });
+
+ // with all dimensions calculated, we can compute the
+ // axis bounding boxes, start from the outside
+ // (reverse order)
+ for (i = allocatedAxes.length - 1; i >= 0; --i) {
+ allocateAxisBoxFirstPhase(allocatedAxes[i]);
+ }
+
+ // make sure we've got enough space for things that
+ // might stick out
+ adjustLayoutForThingsStickingOut();
+
+ $.each(allocatedAxes, function(_, axis) {
+ allocateAxisBoxSecondPhase(axis);
+ });
+ }
+
+ //adjust axis and plotOffset according to grid.margins
+ if (options.grid.margin) {
+ for (a in plotOffset) {
+ var margin = options.grid.margin || 0;
+ plotOffset[a] += typeof margin === "number" ? margin : (margin[a] || 0);
+ }
+ $.each(xaxes.concat(yaxes), function(_, axis) {
+ alignAxisWithGrid(axis, options.grid.margin, function(offset) {
+ return offset !== undefined && offset !== null;
+ });
+ });
+ }
+
+ //after adjusting the axis, plot width and height will be modified
+ plotWidth = surface.width - plotOffset.left - plotOffset.right;
+ plotHeight = surface.height - plotOffset.bottom - plotOffset.top;
+
+ // now we got the proper plot dimensions, we can compute the scaling
+ $.each(axes, function(_, axis) {
+ setTransformationHelpers(axis);
+ });
+
+ if (showGrid) {
+ drawAxisLabels();
+ }
+
+ executeHooks(hooks.setupGrid, []);
+ }
+
+ function widenMinMax(minimum, maximum) {
+ var min = (minimum === undefined ? null : minimum);
+ var max = (maximum === undefined ? null : maximum);
+ var delta = max - min;
+ if (delta === 0.0) {
+ // degenerate case
+ var widen = max === 0 ? 1 : 0.01;
+ var wmin = null;
+ if (min == null) {
+ wmin -= widen;
+ }
+
+ // always widen max if we couldn't widen min to ensure we
+ // don't fall into min == max which doesn't work
+ if (max == null || min != null) {
+ max += widen;
+ }
+
+ if (wmin != null) {
+ min = wmin;
+ }
+ }
+
+ return {
+ min: min,
+ max: max
+ };
+ }
+
+ function autoScaleAxis(axis) {
+ var opts = axis.options,
+ min = opts.min,
+ max = opts.max,
+ datamin = axis.datamin,
+ datamax = axis.datamax,
+ delta;
+
+ switch (opts.autoScale) {
+ case "none":
+ min = +(opts.min != null ? opts.min : datamin);
+ max = +(opts.max != null ? opts.max : datamax);
+ break;
+ case "loose":
+ if (datamin != null && datamax != null) {
+ min = datamin;
+ max = datamax;
+ delta = $.plot.saturated.saturate(max - min);
+ var margin = ((typeof opts.autoScaleMargin === 'number') ? opts.autoScaleMargin : 0.02);
+ min = $.plot.saturated.saturate(min - delta * margin);
+ max = $.plot.saturated.saturate(max + delta * margin);
+
+ // make sure we don't go below zero if all values are positive
+ if (min < 0 && datamin >= 0) {
+ min = 0;
+ }
+ } else {
+ min = opts.min;
+ max = opts.max;
+ }
+ break;
+ case "exact":
+ min = (datamin != null ? datamin : opts.min);
+ max = (datamax != null ? datamax : opts.max);
+ break;
+ case "sliding-window":
+ if (datamax > max) {
+ // move the window to fit the new data,
+ // keeping the axis range constant
+ max = datamax;
+ min = Math.max(datamax - (opts.windowSize || 100), min);
+ }
+ break;
+ }
+
+ var widenedMinMax = widenMinMax(min, max);
+ min = widenedMinMax.min;
+ max = widenedMinMax.max;
+
+ // grow loose or grow exact supported
+ if (opts.growOnly === true && opts.autoScale !== "none" && opts.autoScale !== "sliding-window") {
+ min = (min < datamin) ? min : (datamin !== null ? datamin : min);
+ max = (max > datamax) ? max : (datamax !== null ? datamax : max);
+ }
+
+ axis.autoScaledMin = min;
+ axis.autoScaledMax = max;
+ }
+
+ function setRange(axis, autoScale) {
+ var min = typeof axis.options.min === 'number' ? axis.options.min : axis.min,
+ max = typeof axis.options.max === 'number' ? axis.options.max : axis.max,
+ plotOffset = axis.options.offset;
+
+ if (autoScale) {
+ autoScaleAxis(axis);
+ min = axis.autoScaledMin;
+ max = axis.autoScaledMax;
+ }
+
+ min = (min != null ? min : -1) + (plotOffset.below || 0);
+ max = (max != null ? max : 1) + (plotOffset.above || 0);
+
+ if (min > max) {
+ var tmp = min;
+ min = max;
+ max = tmp;
+ axis.options.offset = { above: 0, below: 0 };
+ }
+
+ axis.min = $.plot.saturated.saturate(min);
+ axis.max = $.plot.saturated.saturate(max);
+ }
+
+ function computeValuePrecision (min, max, direction, ticks, tickDecimals) {
+ var noTicks = fixupNumberOfTicks(direction, surface, ticks);
+
+ var delta = $.plot.saturated.delta(min, max, noTicks),
+ dec = -Math.floor(Math.log(delta) / Math.LN10);
+
+ //if it is called with tickDecimals, then the precision should not be greather then that
+ if (tickDecimals && dec > tickDecimals) {
+ dec = tickDecimals;
+ }
+
+ var magn = parseFloat('1e' + (-dec)),
+ norm = delta / magn;
+
+ if (norm > 2.25 && norm < 3 && (dec + 1) <= tickDecimals) {
+ //we need an extra decimals when tickSize is 2.5
+ ++dec;
+ }
+
+ return isFinite(dec) ? dec : 0;
+ };
+
+ function computeTickSize (min, max, noTicks, tickDecimals) {
+ var delta = $.plot.saturated.delta(min, max, noTicks),
+ dec = -Math.floor(Math.log(delta) / Math.LN10);
+
+ //if it is called with tickDecimals, then the precision should not be greather then that
+ if (tickDecimals && dec > tickDecimals) {
+ dec = tickDecimals;
+ }
+
+ var magn = parseFloat('1e' + (-dec)),
+ norm = delta / magn, // norm is between 1.0 and 10.0
+ size;
+
+ if (norm < 1.5) {
+ size = 1;
+ } else if (norm < 3) {
+ size = 2;
+ if (norm > 2.25 && (tickDecimals == null || (dec + 1) <= tickDecimals)) {
+ size = 2.5;
+ }
+ } else if (norm < 7.5) {
+ size = 5;
+ } else {
+ size = 10;
+ }
+
+ size *= magn;
+ return size;
+ }
+
+ function getAxisTickSize(min, max, direction, options, tickDecimals) {
+ var noTicks;
+
+ if (typeof options.ticks === "number" && options.ticks > 0) {
+ noTicks = options.ticks;
+ } else {
+ // heuristic based on the model a*sqrt(x) fitted to
+ // some data points that seemed reasonable
+ noTicks = 0.3 * Math.sqrt(direction === "x" ? surface.width : surface.height);
+ }
+
+ var size = computeTickSize(min, max, noTicks, tickDecimals);
+
+ if (options.minTickSize != null && size < options.minTickSize) {
+ size = options.minTickSize;
+ }
+
+ return options.tickSize || size;
+ };
+
+ function fixupNumberOfTicks(direction, surface, ticksOption) {
+ var noTicks;
+
+ if (typeof ticksOption === "number" && ticksOption > 0) {
+ noTicks = ticksOption;
+ } else {
+ noTicks = 0.3 * Math.sqrt(direction === "x" ? surface.width : surface.height);
+ }
+
+ return noTicks;
+ }
+
+ function setupTickFormatter(axis) {
+ var opts = axis.options;
+ if (!axis.tickFormatter) {
+ if (typeof opts.tickFormatter === 'function') {
+ axis.tickFormatter = function() {
+ var args = Array.prototype.slice.call(arguments);
+ return "" + opts.tickFormatter.apply(null, args);
+ };
+ } else {
+ axis.tickFormatter = defaultTickFormatter;
+ }
+ }
+ }
+
+ function setupTickGeneration(axis) {
+ var opts = axis.options;
+ var noTicks;
+
+ noTicks = fixupNumberOfTicks(axis.direction, surface, opts.ticks);
+
+ axis.delta = $.plot.saturated.delta(axis.min, axis.max, noTicks);
+ var precision = plot.computeValuePrecision(axis.min, axis.max, axis.direction, noTicks, opts.tickDecimals);
+
+ axis.tickDecimals = Math.max(0, opts.tickDecimals != null ? opts.tickDecimals : precision);
+ axis.tickSize = getAxisTickSize(axis.min, axis.max, axis.direction, opts, opts.tickDecimals);
+
+ // Flot supports base-10 axes; any other mode else is handled by a plug-in,
+ // like flot.time.js.
+
+ if (!axis.tickGenerator) {
+ if (typeof opts.tickGenerator === 'function') {
+ axis.tickGenerator = opts.tickGenerator;
+ } else {
+ axis.tickGenerator = defaultTickGenerator;
+ }
+ }
+
+ if (opts.alignTicksWithAxis != null) {
+ var otherAxis = (axis.direction === "x" ? xaxes : yaxes)[opts.alignTicksWithAxis - 1];
+ if (otherAxis && otherAxis.used && otherAxis !== axis) {
+ // consider snapping min/max to outermost nice ticks
+ var niceTicks = axis.tickGenerator(axis, plot);
+ if (niceTicks.length > 0) {
+ if (opts.min == null) {
+ axis.min = Math.min(axis.min, niceTicks[0]);
+ }
+
+ if (opts.max == null && niceTicks.length > 1) {
+ axis.max = Math.max(axis.max, niceTicks[niceTicks.length - 1]);
+ }
+ }
+
+ axis.tickGenerator = function(axis) {
+ // copy ticks, scaled to this axis
+ var ticks = [],
+ v, i;
+ for (i = 0; i < otherAxis.ticks.length; ++i) {
+ v = (otherAxis.ticks[i].v - otherAxis.min) / (otherAxis.max - otherAxis.min);
+ v = axis.min + v * (axis.max - axis.min);
+ ticks.push(v);
+ }
+ return ticks;
+ };
+
+ // we might need an extra decimal since forced
+ // ticks don't necessarily fit naturally
+ if (!axis.mode && opts.tickDecimals == null) {
+ var extraDec = Math.max(0, -Math.floor(Math.log(axis.delta) / Math.LN10) + 1),
+ ts = axis.tickGenerator(axis, plot);
+
+ // only proceed if the tick interval rounded
+ // with an extra decimal doesn't give us a
+ // zero at end
+ if (!(ts.length > 1 && /\..*0$/.test((ts[1] - ts[0]).toFixed(extraDec)))) {
+ axis.tickDecimals = extraDec;
+ }
+ }
+ }
+ }
+ }
+
+ function setMajorTicks(axis) {
+ var oticks = axis.options.ticks,
+ ticks = [];
+ if (oticks == null || (typeof oticks === "number" && oticks > 0)) {
+ ticks = axis.tickGenerator(axis, plot);
+ } else if (oticks) {
+ if ($.isFunction(oticks)) {
+ // generate the ticks
+ ticks = oticks(axis);
+ } else {
+ ticks = oticks;
+ }
+ }
+
+ // clean up/labelify the supplied ticks, copy them over
+ var i, v;
+ axis.ticks = [];
+ 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 (!isNaN(v)) {
+ axis.ticks.push(
+ newTick(v, label, axis, 'major'));
+ }
+ }
+ }
+
+ function newTick(v, label, axis, type) {
+ if (label === null) {
+ switch (type) {
+ case 'min':
+ case 'max':
+ //improving the precision of endpoints
+ var precision = getEndpointPrecision(v, axis);
+ label = isFinite(precision) ? axis.tickFormatter(v, axis, precision, plot) : axis.tickFormatter(v, axis, precision, plot);
+ break;
+ case 'major':
+ label = axis.tickFormatter(v, axis, undefined, plot);
+ }
+ }
+ return {
+ v: v,
+ label: label
+ };
+ }
+
+ function snapRangeToTicks(axis, ticks, series) {
+ var anyDataInSeries = function(series) {
+ return series.some(e => e.datapoints.points.length > 0);
+ }
+
+ if (axis.options.autoScale === "loose" && ticks.length > 0 && anyDataInSeries(series)) {
+ // snap to ticks
+ axis.min = Math.min(axis.min, ticks[0].v);
+ axis.max = Math.max(axis.max, ticks[ticks.length - 1].v);
+ }
+ }
+
+ function getEndpointPrecision(value, axis) {
+ var canvas1 = Math.floor(axis.p2c(value)),
+ canvas2 = axis.direction === "x" ? canvas1 + 1 : canvas1 - 1,
+ point1 = axis.c2p(canvas1),
+ point2 = axis.c2p(canvas2),
+ precision = computeValuePrecision(point1, point2, axis.direction, 1);
+
+ return precision;
+ }
+
+ function setEndpointTicks(axis, series) {
+ if (isValidEndpointTick(axis, series)) {
+ axis.ticks.unshift(newTick(axis.min, null, axis, 'min'));
+ axis.ticks.push(newTick(axis.max, null, axis, 'max'));
+ }
+ }
+
+ function isValidEndpointTick(axis, series) {
+ if (axis.options.showTickLabels === 'endpoints') {
+ return true;
+ }
+ if (axis.options.showTickLabels === 'all') {
+ var associatedSeries = series.filter(function(s) {
+ return s.xaxis === axis;
+ }),
+ notAllBarSeries = associatedSeries.some(function(s) {
+ return !s.bars.show;
+ });
+ return associatedSeries.length === 0 || notAllBarSeries;
+ }
+ if (axis.options.showTickLabels === 'major' || axis.options.showTickLabels === 'none') {
+ return false;
+ }
+ }
+
+ function draw() {
+ surface.clear();
+ executeHooks(hooks.drawBackground, [ctx]);
+
+ var grid = options.grid;
+
+ // draw background, if any
+ if (grid.show && grid.backgroundColor) {
+ drawBackground();
+ }
+
+ if (grid.show && !grid.aboveData) {
+ drawGrid();
+ }
+
+ for (var i = 0; i < series.length; ++i) {
+ executeHooks(hooks.drawSeries, [ctx, series[i], i, getColorOrGradient]);
+ drawSeries(series[i]);
+ }
+
+ executeHooks(hooks.draw, [ctx]);
+
+ if (grid.show && grid.aboveData) {
+ drawGrid();
+ }
+
+ surface.render();
+
+ // A draw implies that either the axes or data have changed, so we
+ // should probably update the overlay highlights as well.
+ triggerRedrawOverlay();
+ }
+
+ function extractRange(ranges, coord) {
+ var axis, from, to, key, axes = allAxes();
+
+ for (var i = 0; i < axes.length; ++i) {
+ axis = axes[i];
+ if (axis.direction === coord) {
+ key = coord + axis.n + "axis";
+ if (!ranges[key] && axis.n === 1) {
+ // support x1axis as xaxis
+ key = coord + "axis";
+ }
+
+ if (ranges[key]) {
+ from = ranges[key].from;
+ to = ranges[key].to;
+ break;
+ }
+ }
+ }
+
+ // backwards-compat stuff - to be removed in future
+ if (!ranges[key]) {
+ axis = coord === "x" ? xaxes[0] : yaxes[0];
+ from = ranges[coord + "1"];
+ to = ranges[coord + "2"];
+ }
+
+ // auto-reverse as an added bonus
+ if (from != null && to != null && from > to) {
+ var tmp = from;
+ from = to;
+ to = tmp;
+ }
+
+ return {
+ from: from,
+ to: to,
+ axis: axis
+ };
+ }
+
+ function drawBackground() {
+ ctx.save();
+ ctx.translate(plotOffset.left, plotOffset.top);
+
+ ctx.fillStyle = getColorOrGradient(options.grid.backgroundColor, plotHeight, 0, "rgba(255, 255, 255, 0)");
+ ctx.fillRect(0, 0, plotWidth, plotHeight);
+ ctx.restore();
+ }
+
+ function drawMarkings() {
+ // draw markings
+ var markings = options.grid.markings,
+ axes;
+
+ if (markings) {
+ if ($.isFunction(markings)) {
+ axes = plot.getAxes();
+ // xmin etc. is backwards compatibility, to be
+ // removed in the future
+ axes.xmin = axes.xaxis.min;
+ axes.xmax = axes.xaxis.max;
+ axes.ymin = axes.yaxis.min;
+ axes.ymax = axes.yaxis.max;
+
+ markings = markings(axes);
+ }
+
+ var i;
+ 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);
+
+ var xequal = xrange.from === xrange.to,
+ yequal = yrange.from === yrange.to;
+
+ if (xequal && yequal) {
+ continue;
+ }
+
+ // then draw
+ xrange.from = Math.floor(xrange.axis.p2c(xrange.from));
+ xrange.to = Math.floor(xrange.axis.p2c(xrange.to));
+ yrange.from = Math.floor(yrange.axis.p2c(yrange.from));
+ yrange.to = Math.floor(yrange.axis.p2c(yrange.to));
+
+ if (xequal || yequal) {
+ var lineWidth = m.lineWidth || options.grid.markingsLineWidth,
+ subPixel = lineWidth % 2 ? 0.5 : 0;
+ ctx.beginPath();
+ ctx.strokeStyle = m.color || options.grid.markingsColor;
+ ctx.lineWidth = lineWidth;
+ if (xequal) {
+ ctx.moveTo(xrange.to + subPixel, yrange.from);
+ ctx.lineTo(xrange.to + subPixel, yrange.to);
+ } else {
+ ctx.moveTo(xrange.from, yrange.to + subPixel);
+ ctx.lineTo(xrange.to, yrange.to + subPixel);
+ }
+ ctx.stroke();
+ } else {
+ ctx.fillStyle = m.color || options.grid.markingsColor;
+ ctx.fillRect(xrange.from, yrange.to,
+ xrange.to - xrange.from,
+ yrange.from - yrange.to);
+ }
+ }
+ }
+ }
+
+ function findEdges(axis) {
+ var box = axis.box,
+ x = 0,
+ y = 0;
+
+ // find the edges
+ if (axis.direction === "x") {
+ x = 0;
+ y = box.top - plotOffset.top + (axis.position === "top" ? box.height : 0);
+ } else {
+ y = 0;
+ x = box.left - plotOffset.left + (axis.position === "left" ? box.width : 0) + axis.boxPosition.centerX;
+ }
+
+ return {
+ x: x,
+ y: y
+ };
+ };
+
+ function alignPosition(lineWidth, pos) {
+ return ((lineWidth % 2) !== 0) ? Math.floor(pos) + 0.5 : pos;
+ };
+
+ function drawTickBar(axis) {
+ ctx.lineWidth = 1;
+ var edges = findEdges(axis),
+ x = edges.x,
+ y = edges.y;
+
+ // draw tick bar
+ if (axis.show) {
+ var xoff = 0,
+ yoff = 0;
+
+ ctx.strokeStyle = axis.options.color;
+ ctx.beginPath();
+ if (axis.direction === "x") {
+ xoff = plotWidth + 1;
+ } else {
+ yoff = plotHeight + 1;
+ }
+
+ if (axis.direction === "x") {
+ y = alignPosition(ctx.lineWidth, y);
+ } else {
+ x = alignPosition(ctx.lineWidth, x);
+ }
+
+ ctx.moveTo(x, y);
+ ctx.lineTo(x + xoff, y + yoff);
+ ctx.stroke();
+ }
+ };
+
+ function drawTickMarks(axis) {
+ var t = axis.tickLength,
+ minorTicks = axis.showMinorTicks,
+ minorTicksNr = MINOR_TICKS_COUNT_CONSTANT,
+ edges = findEdges(axis),
+ x = edges.x,
+ y = edges.y,
+ i = 0;
+
+ // draw major tick marks
+ ctx.strokeStyle = axis.options.color;
+ ctx.beginPath();
+
+ for (i = 0; i < axis.ticks.length; ++i) {
+ var v = axis.ticks[i].v,
+ xoff = 0,
+ yoff = 0,
+ xminor = 0,
+ yminor = 0,
+ j;
+
+ if (!isNaN(v) && v >= axis.min && v <= axis.max) {
+ if (axis.direction === "x") {
+ x = axis.p2c(v);
+ yoff = t;
+
+ if (axis.position === "top") {
+ yoff = -yoff;
+ }
+ } else {
+ y = axis.p2c(v);
+ xoff = t;
+
+ if (axis.position === "left") {
+ xoff = -xoff;
+ }
+ }
+
+ if (axis.direction === "x") {
+ x = alignPosition(ctx.lineWidth, x);
+ } else {
+ y = alignPosition(ctx.lineWidth, y);
+ }
+
+ ctx.moveTo(x, y);
+ ctx.lineTo(x + xoff, y + yoff);
+ }
+
+ //draw minor tick marks
+ if (minorTicks === true && i < axis.ticks.length - 1) {
+ var v1 = axis.ticks[i].v,
+ v2 = axis.ticks[i + 1].v,
+ step = (v2 - v1) / (minorTicksNr + 1);
+
+ for (j = 1; j <= minorTicksNr; j++) {
+ // compute minor tick position
+ if (axis.direction === "x") {
+ yminor = t / 2; // minor ticks are half length
+ x = alignPosition(ctx.lineWidth, axis.p2c(v1 + j * step))
+
+ if (axis.position === "top") {
+ yminor = -yminor;
+ }
+
+ // don't go over the plot borders
+ if ((x < 0) || (x > plotWidth)) {
+ continue;
+ }
+ } else {
+ xminor = t / 2; // minor ticks are half length
+ y = alignPosition(ctx.lineWidth, axis.p2c(v1 + j * step));
+
+ if (axis.position === "left") {
+ xminor = -xminor;
+ }
+
+ // don't go over the plot borders
+ if ((y < 0) || (y > plotHeight)) {
+ continue;
+ }
+ }
+
+ ctx.moveTo(x, y);
+ ctx.lineTo(x + xminor, y + yminor);
+ }
+ }
+ }
+
+ ctx.stroke();
+ };
+
+ function drawGridLines(axis) {
+ // check if the line will be overlapped with a border
+ var overlappedWithBorder = function (value) {
+ var bw = options.grid.borderWidth;
+ return (((typeof bw === "object" && bw[axis.position] > 0) || bw > 0) && (value === axis.min || value === axis.max));
+ };
+
+ ctx.strokeStyle = options.grid.tickColor;
+ ctx.beginPath();
+ var i;
+ for (i = 0; i < axis.ticks.length; ++i) {
+ var v = axis.ticks[i].v,
+ xoff = 0,
+ yoff = 0,
+ x = 0,
+ y = 0;
+
+ if (isNaN(v) || v < axis.min || v > axis.max) continue;
+
+ // skip those lying on the axes if we got a border
+ if (overlappedWithBorder(v)) continue;
+
+ if (axis.direction === "x") {
+ x = axis.p2c(v);
+ y = plotHeight;
+ yoff = -plotHeight;
+ } else {
+ x = 0;
+ y = axis.p2c(v);
+ xoff = plotWidth;
+ }
+
+ if (axis.direction === "x") {
+ x = alignPosition(ctx.lineWidth, x);
+ } else {
+ y = alignPosition(ctx.lineWidth, y);
+ }
+
+ ctx.moveTo(x, y);
+ ctx.lineTo(x + xoff, y + yoff);
+ }
+
+ ctx.stroke();
+ };
+
+ function drawBorder() {
+ // If either borderWidth or borderColor is an object, then draw the border
+ // line by line instead of as one rectangle
+ var bw = options.grid.borderWidth,
+ bc = options.grid.borderColor;
+
+ if (typeof bw === "object" || typeof bc === "object") {
+ if (typeof bw !== "object") {
+ bw = {
+ top: bw,
+ right: bw,
+ bottom: bw,
+ left: bw
+ };
+ }
+ if (typeof bc !== "object") {
+ bc = {
+ top: bc,
+ right: bc,
+ bottom: bc,
+ left: bc
+ };
+ }
+
+ if (bw.top > 0) {
+ ctx.strokeStyle = bc.top;
+ ctx.lineWidth = bw.top;
+ ctx.beginPath();
+ ctx.moveTo(0 - bw.left, 0 - bw.top / 2);
+ ctx.lineTo(plotWidth, 0 - bw.top / 2);
+ ctx.stroke();
+ }
+
+ if (bw.right > 0) {
+ ctx.strokeStyle = bc.right;
+ ctx.lineWidth = bw.right;
+ ctx.beginPath();
+ ctx.moveTo(plotWidth + bw.right / 2, 0 - bw.top);
+ ctx.lineTo(plotWidth + bw.right / 2, plotHeight);
+ ctx.stroke();
+ }
+
+ if (bw.bottom > 0) {
+ ctx.strokeStyle = bc.bottom;
+ ctx.lineWidth = bw.bottom;
+ ctx.beginPath();
+ ctx.moveTo(plotWidth + bw.right, plotHeight + bw.bottom / 2);
+ ctx.lineTo(0, plotHeight + bw.bottom / 2);
+ ctx.stroke();
+ }
+
+ if (bw.left > 0) {
+ ctx.strokeStyle = bc.left;
+ ctx.lineWidth = bw.left;
+ ctx.beginPath();
+ ctx.moveTo(0 - bw.left / 2, plotHeight + bw.bottom);
+ ctx.lineTo(0 - bw.left / 2, 0);
+ ctx.stroke();
+ }
+ } else {
+ ctx.lineWidth = bw;
+ ctx.strokeStyle = options.grid.borderColor;
+ ctx.strokeRect(-bw / 2, -bw / 2, plotWidth + bw, plotHeight + bw);
+ }
+ };
+
+ function drawGrid() {
+ var axes, bw;
+
+ ctx.save();
+ ctx.translate(plotOffset.left, plotOffset.top);
+
+ drawMarkings();
+
+ axes = allAxes();
+ bw = options.grid.borderWidth;
+
+ for (var j = 0; j < axes.length; ++j) {
+ var axis = axes[j];
+
+ if (!axis.show) {
+ continue;
+ }
+
+ drawTickBar(axis);
+ if (axis.showTicks === true) {
+ drawTickMarks(axis);
+ }
+
+ if (axis.gridLines === true) {
+ drawGridLines(axis, bw);
+ }
+ }
+
+ // draw border
+ if (bw) {
+ drawBorder();
+ }
+
+ ctx.restore();
+ }
+
+ function drawAxisLabels() {
+ $.each(allAxes(), function(_, axis) {
+ var box = axis.box,
+ legacyStyles = axis.direction + "Axis " + axis.direction + axis.n + "Axis",
+ layer = "flot-" + axis.direction + "-axis flot-" + axis.direction + axis.n + "-axis " + legacyStyles,
+ font = axis.options.font || "flot-tick-label tickLabel",
+ i, x, y, halign, valign, info,
+ margin = 3,
+ nullBox = {x: NaN, y: NaN, width: NaN, height: NaN}, newLabelBox, labelBoxes = [],
+ overlapping = function(x11, y11, x12, y12, x21, y21, x22, y22) {
+ return ((x11 <= x21 && x21 <= x12) || (x21 <= x11 && x11 <= x22)) &&
+ ((y11 <= y21 && y21 <= y12) || (y21 <= y11 && y11 <= y22));
+ },
+ overlapsOtherLabels = function(newLabelBox, previousLabelBoxes) {
+ return previousLabelBoxes.some(function(labelBox) {
+ return overlapping(
+ newLabelBox.x, newLabelBox.y, newLabelBox.x + newLabelBox.width, newLabelBox.y + newLabelBox.height,
+ labelBox.x, labelBox.y, labelBox.x + labelBox.width, labelBox.y + labelBox.height);
+ });
+ },
+ drawAxisLabel = function (tick, labelBoxes) {
+ if (!tick || !tick.label || tick.v < axis.min || tick.v > axis.max) {
+ return nullBox;
+ }
+
+ info = surface.getTextInfo(layer, tick.label, font);
+
+ if (axis.direction === "x") {
+ halign = "center";
+ x = plotOffset.left + axis.p2c(tick.v);
+ if (axis.position === "bottom") {
+ y = box.top + box.padding - axis.boxPosition.centerY;
+ } else {
+ y = box.top + box.height - box.padding + axis.boxPosition.centerY;
+ valign = "bottom";
+ }
+ newLabelBox = {x: x - info.width / 2 - margin, y: y - margin, width: info.width + 2 * margin, height: info.height + 2 * margin};
+ } else {
+ valign = "middle";
+ y = plotOffset.top + axis.p2c(tick.v);
+ if (axis.position === "left") {
+ x = box.left + box.width - box.padding - axis.boxPosition.centerX;
+ halign = "right";
+ } else {
+ x = box.left + box.padding + axis.boxPosition.centerX;
+ }
+ newLabelBox = {x: x - info.width / 2 - margin, y: y - margin, width: info.width + 2 * margin, height: info.height + 2 * margin};
+ }
+
+ if (overlapsOtherLabels(newLabelBox, labelBoxes)) {
+ return nullBox;
+ }
+
+ surface.addText(layer, x, y, tick.label, font, null, null, halign, valign);
+
+ return newLabelBox;
+ };
+
+ // Remove text before checking for axis.show and ticks.length;
+ // otherwise plugins, like flot-tickrotor, that draw their own
+ // tick labels will end up with both theirs and the defaults.
+
+ surface.removeText(layer);
+
+ executeHooks(hooks.drawAxis, [axis, surface]);
+
+ if (!axis.show) {
+ return;
+ }
+
+ switch (axis.options.showTickLabels) {
+ case 'none':
+ break;
+ case 'endpoints':
+ labelBoxes.push(drawAxisLabel(axis.ticks[0], labelBoxes));
+ labelBoxes.push(drawAxisLabel(axis.ticks[axis.ticks.length - 1], labelBoxes));
+ break;
+ case 'major':
+ labelBoxes.push(drawAxisLabel(axis.ticks[0], labelBoxes));
+ labelBoxes.push(drawAxisLabel(axis.ticks[axis.ticks.length - 1], labelBoxes));
+ for (i = 1; i < axis.ticks.length - 1; ++i) {
+ labelBoxes.push(drawAxisLabel(axis.ticks[i], labelBoxes));
+ }
+ break;
+ case 'all':
+ labelBoxes.push(drawAxisLabel(axis.ticks[0], []));
+ labelBoxes.push(drawAxisLabel(axis.ticks[axis.ticks.length - 1], labelBoxes));
+ for (i = 1; i < axis.ticks.length - 1; ++i) {
+ labelBoxes.push(drawAxisLabel(axis.ticks[i], labelBoxes));
+ }
+ break;
+ }
+ });
+ }
+
+ function drawSeries(series) {
+ if (series.lines.show) {
+ $.plot.drawSeries.drawSeriesLines(series, ctx, plotOffset, plotWidth, plotHeight, plot.drawSymbol, getColorOrGradient);
+ }
+
+ if (series.bars.show) {
+ $.plot.drawSeries.drawSeriesBars(series, ctx, plotOffset, plotWidth, plotHeight, plot.drawSymbol, getColorOrGradient);
+ }
+
+ if (series.points.show) {
+ $.plot.drawSeries.drawSeriesPoints(series, ctx, plotOffset, plotWidth, plotHeight, plot.drawSymbol, getColorOrGradient);
+ }
+ }
+
+ function computeRangeForDataSeries(series, force, isValid) {
+ var points = series.datapoints.points,
+ ps = series.datapoints.pointsize,
+ format = series.datapoints.format,
+ topSentry = Number.POSITIVE_INFINITY,
+ bottomSentry = Number.NEGATIVE_INFINITY,
+ range = {
+ xmin: topSentry,
+ ymin: topSentry,
+ xmax: bottomSentry,
+ ymax: bottomSentry
+ };
+
+ for (var j = 0; j < points.length; j += ps) {
+ if (points[j] === null) {
+ continue;
+ }
+
+ if (typeof (isValid) === 'function' && !isValid(points[j])) {
+ continue;
+ }
+
+ for (var m = 0; m < ps; ++m) {
+ var val = points[j + m],
+ f = format[m];
+ if (f === null || f === undefined) {
+ continue;
+ }
+
+ if (typeof (isValid) === 'function' && !isValid(val)) {
+ continue;
+ }
+
+ if ((!force && !f.computeRange) || val === Infinity || val === -Infinity) {
+ continue;
+ }
+
+ if (f.x === true) {
+ if (val < range.xmin) {
+ range.xmin = val;
+ }
+
+ if (val > range.xmax) {
+ range.xmax = val;
+ }
+ }
+
+ if (f.y === true) {
+ if (val < range.ymin) {
+ range.ymin = val;
+ }
+
+ if (val > range.ymax) {
+ range.ymax = val;
+ }
+ }
+ }
+ }
+
+ return range;
+ };
+
+ function adjustSeriesDataRange(series, range) {
+ if (series.bars.show) {
+ // make sure we got room for the bar on the dancing floor
+ var delta;
+
+ // update bar width if needed
+ var useAbsoluteBarWidth = series.bars.barWidth[1];
+ if (series.datapoints && series.datapoints.points && !useAbsoluteBarWidth) {
+ computeBarWidth(series);
+ }
+
+ var barWidth = series.bars.barWidth[0] || series.bars.barWidth;
+ switch (series.bars.align) {
+ case "left":
+ delta = 0;
+ break;
+ case "right":
+ delta = -barWidth;
+ break;
+ default:
+ delta = -barWidth / 2;
+ }
+
+ if (series.bars.horizontal) {
+ range.ymin += delta;
+ range.ymax += delta + barWidth;
+ }
+ else {
+ range.xmin += delta;
+ range.xmax += delta + barWidth;
+ }
+ }
+
+ if ((series.bars.show && series.bars.zero) || (series.lines.show && series.lines.zero)) {
+ var ps = series.datapoints.pointsize;
+
+ // make sure the 0 point is included in the computed y range when requested
+ if (ps <= 2) {
+ /*if ps > 0 the points were already taken into account for autoScale */
+ range.ymin = Math.min(0, range.ymin);
+ range.ymax = Math.max(0, range.ymax);
+ }
+ }
+
+ return range;
+ };
+
+ function computeBarWidth(series) {
+ var xValues = [];
+ var pointsize = series.datapoints.pointsize, minDistance = Number.MAX_VALUE;
+
+ if (series.datapoints.points.length <= pointsize) {
+ minDistance = 1;
+ }
+
+ var start = series.bars.horizontal ? 1 : 0;
+ for (var j = start; j < series.datapoints.points.length; j += pointsize) {
+ if (isFinite(series.datapoints.points[j]) && series.datapoints.points[j] !== null) {
+ xValues.push(series.datapoints.points[j]);
+ }
+ }
+
+ function onlyUnique(value, index, self) {
+ return self.indexOf(value) === index;
+ }
+
+ xValues = xValues.filter( onlyUnique );
+ xValues.sort(function(a, b){return a - b});
+
+ for (var j = 1; j < xValues.length; j++) {
+ var distance = Math.abs(xValues[j] - xValues[j - 1]);
+ if (distance < minDistance && isFinite(distance)) {
+ minDistance = distance;
+ }
+ }
+
+ if (typeof series.bars.barWidth === "number") {
+ series.bars.barWidth = series.bars.barWidth * minDistance;
+ } else {
+ series.bars.barWidth[0] = series.bars.barWidth[0] * minDistance;
+ }
+ }
+
+ // returns the data item the mouse is over/ the cursor is closest to, or null if none is found
+ function findNearbyItem(mouseX, mouseY, seriesFilter, radius, computeDistance) {
+ var i, j,
+ item = null,
+ smallestDistance = radius * radius + 1;
+
+ for (var i = series.length - 1; i >= 0; --i) {
+ if (!seriesFilter(i)) continue;
+
+ var s = series[i];
+ if (!s.datapoints) return;
+
+ if (s.lines.show || s.points.show) {
+ var found = findNearbyPoint(s, mouseX, mouseY, radius, smallestDistance, computeDistance);
+ if (found) {
+ smallestDistance = found.distance;
+ item = [i, found.dataIndex];
+ }
+ }
+
+ if (s.bars.show && !item) { // no other point can be nearby
+ var foundIndex = findNearbyBar(s, mouseX, mouseY);
+ if (foundIndex >= 0) item = [i, foundIndex];
+ }
+ }
+
+ if (item) {
+ i = item[0];
+ j = item[1];
+ var 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 findNearbyPoint (series, mouseX, mouseY, maxDistance, smallestDistance, computeDistance) {
+ var mx = series.xaxis.c2p(mouseX),
+ my = series.yaxis.c2p(mouseY),
+ maxx = maxDistance / series.xaxis.scale,
+ maxy = maxDistance / series.yaxis.scale,
+ points = series.datapoints.points,
+ ps = series.datapoints.pointsize;
+
+ // with inverse transforms, we can't use the maxx/maxy
+ // optimization, sadly
+ if (series.xaxis.options.inverseTransform) {
+ maxx = Number.MAX_VALUE;
+ }
+
+ if (series.yaxis.options.inverseTransform) {
+ maxy = Number.MAX_VALUE;
+ }
+
+ var found = null;
+ for (var j = 0; j < points.length; j += ps) {
+ var x = points[j];
+ var y = points[j + 1];
+ if (x == null) {
+ continue;
+ }
+
+ 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(series.xaxis.p2c(x) - mouseX);
+ var dy = Math.abs(series.yaxis.p2c(y) - mouseY);
+ var dist = computeDistance ? computeDistance(dx, dy) : dx * dx + dy * dy;
+
+ // use <= to ensure last point takes precedence
+ // (last generally means on top of)
+ if (dist < smallestDistance) {
+ smallestDistance = dist;
+ found = { dataIndex: j / ps, distance: dist };
+ }
+ }
+
+ return found;
+ }
+
+ function findNearbyBar (series, mouseX, mouseY) {
+ var barLeft, barRight,
+ barWidth = series.bars.barWidth[0] || series.bars.barWidth,
+ mx = series.xaxis.c2p(mouseX),
+ my = series.yaxis.c2p(mouseY),
+ points = series.datapoints.points,
+ ps = series.datapoints.pointsize;
+
+ switch (series.bars.align) {
+ case "left":
+ barLeft = 0;
+ break;
+ case "right":
+ barLeft = -barWidth;
+ break;
+ default:
+ barLeft = -barWidth / 2;
+ }
+
+ barRight = barLeft + barWidth;
+
+ var fillTowards = series.bars.fillTowards || 0;
+ var bottom = fillTowards > series.yaxis.min ? Math.min(series.yaxis.max, fillTowards) : series.yaxis.min;
+
+ var foundIndex = -1;
+ for (var j = 0; j < points.length; j += ps) {
+ var x = points[j], y = points[j + 1];
+ if (x == null)
+ continue;
+
+ // for a bar graph, the cursor must be inside the bar
+ if (series.bars.horizontal ?
+ (mx <= Math.max(bottom, x) && mx >= Math.min(bottom, x) &&
+ my >= y + barLeft && my <= y + barRight) :
+ (mx >= x + barLeft && mx <= x + barRight &&
+ my >= Math.min(bottom, y) && my <= Math.max(bottom, y)))
+ foundIndex = j / ps;
+ }
+
+ return foundIndex;
+ }
+
+ function findNearbyInterpolationPoint(posX, posY, seriesFilter) {
+ var i, j, dist, dx, dy, ps,
+ item,
+ smallestDistance = Number.MAX_VALUE;
+
+ for (i = 0; i < series.length; ++i) {
+ if (!seriesFilter(i)) {
+ continue;
+ }
+ var points = series[i].datapoints.points;
+ ps = series[i].datapoints.pointsize;
+
+ // if the data is coming from positive -> negative, reverse the comparison
+ const comparer = points[points.length - ps] < points[0]
+ ? function (x1, x2) { return x1 > x2 }
+ : function (x1, x2) { return x2 > x1 };
+
+ // do not interpolate outside the bounds of the data.
+ if (comparer(posX, points[0])) {
+ continue;
+ }
+
+ // Find the nearest points, x-wise
+ for (j = ps; j < points.length; j += ps) {
+ if (comparer(posX, points[j])) {
+ break;
+ }
+ }
+
+ // Now Interpolate
+ var y,
+ p1x = points[j - ps],
+ p1y = points[j - ps + 1],
+ p2x = points[j],
+ p2y = points[j + 1];
+
+ if ((p1x === undefined) || (p2x === undefined) ||
+ (p1y === undefined) || (p2y === undefined)) {
+ continue;
+ }
+
+ if (p1x === p2x) {
+ y = p2y
+ } else {
+ y = p1y + (p2y - p1y) * (posX - p1x) / (p2x - p1x);
+ }
+
+ posY = y;
+
+ dx = Math.abs(series[i].xaxis.p2c(p2x) - posX);
+ dy = Math.abs(series[i].yaxis.p2c(p2y) - posY);
+ dist = dx * dx + dy * dy;
+
+ if (dist < smallestDistance) {
+ smallestDistance = dist;
+ item = [posX, posY, i, j];
+ }
+ }
+
+ if (item) {
+ i = item[2];
+ j = item[3];
+ ps = series[i].datapoints.pointsize;
+ points = series[i].datapoints.points;
+ p1x = points[j - ps];
+ p1y = points[j - ps + 1];
+ p2x = points[j];
+ p2y = points[j + 1];
+
+ return {
+ datapoint: [item[0], item[1]],
+ leftPoint: [p1x, p1y],
+ rightPoint: [p2x, p2y],
+ seriesIndex: i
+ };
+ }
+
+ return null;
+ }
+
+ function triggerRedrawOverlay() {
+ var t = options.interaction.redrawOverlayInterval;
+ if (t === -1) { // skip event queue
+ drawOverlay();
+ return;
+ }
+
+ if (!redrawTimeout) {
+ redrawTimeout = setTimeout(function() {
+ drawOverlay(plot);
+ }, t);
+ }
+ }
+
+ function drawOverlay(plot) {
+ redrawTimeout = null;
+
+ if (!octx) {
+ return;
+ }
+ overlay.clear();
+ executeHooks(hooks.drawOverlay, [octx, overlay]);
+ var event = new CustomEvent('onDrawingDone');
+ plot.getEventHolder().dispatchEvent(event);
+ plot.getPlaceholder().trigger('drawingdone');
+ }
+
+ 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") {
+ var co = $.color.parse(defaultColor);
+ if (c.brightness != null) {
+ co = co.scale('rgb', c.brightness);
+ }
+
+ if (c.opacity != null) {
+ co.a *= c.opacity;
+ }
+
+ c = co.toString();
+ }
+ gradient.addColorStop(i / (l - 1), c);
+ }
+
+ return gradient;
+ }
+ }
+ }
+
+ // Add the plot function to the top level of the jQuery object
+
+ $.plot = function(placeholder, data, options) {
+ var plot = new Plot($(placeholder), data, options, $.plot.plugins);
+ return plot;
+ };
+
+ $.plot.version = "3.0.0";
+
+ $.plot.plugins = [];
+
+ // Also add the plot function as a chainable property
+ $.fn.plot = function(data, options) {
+ return this.each(function() {
+ $.plot(this, data, options);
+ });
+ };
+
+ $.plot.linearTickGenerator = defaultTickGenerator;
+ $.plot.defaultTickFormatter = defaultTickFormatter;
+ $.plot.expRepTickFormatter = expRepTickFormatter;
+})(jQuery);