--- a/src/pyams_skin/resources/js/ext/flot/jquery.flot.js Sun Jul 19 02:02:20 2020 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,2786 +0,0 @@
-/* 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);