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465 lines
21 KiB
JavaScript
465 lines
21 KiB
JavaScript
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/**
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* jqPlot
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* Pure JavaScript plotting plugin using jQuery
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*
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* Version: 1.0.4
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* Revision: 1121
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*
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* Copyright (c) 2009-2012 Chris Leonello
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* jqPlot is currently available for use in all personal or commercial projects
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* under both the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL
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* version 2.0 (http://www.gnu.org/licenses/gpl-2.0.html) licenses. This means that you can
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* choose the license that best suits your project and use it accordingly.
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*
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* Although not required, the author would appreciate an email letting him
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* know of any substantial use of jqPlot. You can reach the author at:
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* chris at jqplot dot com or see http://www.jqplot.com/info.php .
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*
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* If you are feeling kind and generous, consider supporting the project by
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* making a donation at: http://www.jqplot.com/donate.php .
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*
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* sprintf functions contained in jqplot.sprintf.js by Ash Searle:
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*
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* version 2007.04.27
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* author Ash Searle
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* http://hexmen.com/blog/2007/03/printf-sprintf/
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* http://hexmen.com/js/sprintf.js
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* The author (Ash Searle) has placed this code in the public domain:
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* "This code is unrestricted: you are free to use it however you like."
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*
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*/
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(function($) {
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$.jqplot.eventListenerHooks.push(['jqplotMouseMove', handleMove]);
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/**
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* Class: $.jqplot.Highlighter
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* Plugin which will highlight data points when they are moused over.
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*
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* To use this plugin, include the js
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* file in your source:
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*
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* > <script type="text/javascript" src="plugins/jqplot.highlighter.js"></script>
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*
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* A tooltip providing information about the data point is enabled by default.
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* To disable the tooltip, set "showTooltip" to false.
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*
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* You can control what data is displayed in the tooltip with various
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* options. The "tooltipAxes" option controls wether the x, y or both
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* data values are displayed.
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*
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* Some chart types (e.g. hi-low-close) have more than one y value per
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* data point. To display the additional values in the tooltip, set the
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* "yvalues" option to the desired number of y values present (3 for a hlc chart).
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*
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* By default, data values will be formatted with the same formatting
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* specifiers as used to format the axis ticks. A custom format code
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* can be supplied with the tooltipFormatString option. This will apply
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* to all values in the tooltip.
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*
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* For more complete control, the "formatString" option can be set. This
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* Allows conplete control over tooltip formatting. Values are passed to
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* the format string in an order determined by the "tooltipAxes" and "yvalues"
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* options. So, if you have a hi-low-close chart and you just want to display
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* the hi-low-close values in the tooltip, you could set a formatString like:
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*
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* > highlighter: {
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* > tooltipAxes: 'y',
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* > yvalues: 3,
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* > formatString:'<table class="jqplot-highlighter">
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* > <tr><td>hi:</td><td>%s</td></tr>
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* > <tr><td>low:</td><td>%s</td></tr>
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* > <tr><td>close:</td><td>%s</td></tr></table>'
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* > }
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*
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*/
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$.jqplot.Highlighter = function(options) {
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// Group: Properties
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//
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//prop: show
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// true to show the highlight.
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this.show = $.jqplot.config.enablePlugins;
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// prop: markerRenderer
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// Renderer used to draw the marker of the highlighted point.
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// Renderer will assimilate attributes from the data point being highlighted,
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// so no attributes need set on the renderer directly.
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// Default is to turn off shadow drawing on the highlighted point.
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this.markerRenderer = new $.jqplot.MarkerRenderer({shadow:false});
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// prop: showMarker
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// true to show the marker
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this.showMarker = true;
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// prop: lineWidthAdjust
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// Pixels to add to the lineWidth of the highlight.
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this.lineWidthAdjust = 2.5;
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// prop: sizeAdjust
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// Pixels to add to the overall size of the highlight.
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this.sizeAdjust = 5;
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// prop: showTooltip
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// Show a tooltip with data point values.
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this.showTooltip = true;
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// prop: tooltipLocation
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// Where to position tooltip, 'n', 'ne', 'e', 'se', 's', 'sw', 'w', 'nw'
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this.tooltipLocation = 'nw';
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// prop: fadeTooltip
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// true = fade in/out tooltip, flase = show/hide tooltip
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this.fadeTooltip = true;
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// prop: tooltipFadeSpeed
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// 'slow', 'def', 'fast', or number of milliseconds.
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this.tooltipFadeSpeed = "fast";
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// prop: tooltipOffset
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// Pixel offset of tooltip from the highlight.
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this.tooltipOffset = 2;
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// prop: tooltipAxes
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// Which axes to display in tooltip, 'x', 'y' or 'both', 'xy' or 'yx'
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// 'both' and 'xy' are equivalent, 'yx' reverses order of labels.
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this.tooltipAxes = 'both';
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// prop; tooltipSeparator
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// String to use to separate x and y axes in tooltip.
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this.tooltipSeparator = ', ';
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// prop; tooltipContentEditor
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// Function used to edit/augment/replace the formatted tooltip contents.
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// Called as str = tooltipContentEditor(str, seriesIndex, pointIndex)
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// where str is the generated tooltip html and seriesIndex and pointIndex identify
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// the data point being highlighted. Should return the html for the tooltip contents.
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this.tooltipContentEditor = null;
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// prop: useAxesFormatters
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// Use the x and y axes formatters to format the text in the tooltip.
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this.useAxesFormatters = true;
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// prop: tooltipFormatString
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// sprintf format string for the tooltip.
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// Uses Ash Searle's javascript sprintf implementation
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// found here: http://hexmen.com/blog/2007/03/printf-sprintf/
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// See http://perldoc.perl.org/functions/sprintf.html for reference.
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// Additional "p" and "P" format specifiers added by Chris Leonello.
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this.tooltipFormatString = '%.5P';
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// prop: formatString
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// alternative to tooltipFormatString
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// will format the whole tooltip text, populating with x, y values as
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// indicated by tooltipAxes option. So, you could have a tooltip like:
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// 'Date: %s, number of cats: %d' to format the whole tooltip at one go.
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// If useAxesFormatters is true, values will be formatted according to
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// Axes formatters and you can populate your tooltip string with
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// %s placeholders.
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this.formatString = null;
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// prop: yvalues
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// Number of y values to expect in the data point array.
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// Typically this is 1. Certain plots, like OHLC, will
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// have more y values in each data point array.
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this.yvalues = 1;
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// prop: bringSeriesToFront
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// This option requires jQuery 1.4+
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// True to bring the series of the highlighted point to the front
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// of other series.
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this.bringSeriesToFront = false;
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this._tooltipElem;
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this.isHighlighting = false;
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this.currentNeighbor = null;
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$.extend(true, this, options);
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};
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var locations = ['nw', 'n', 'ne', 'e', 'se', 's', 'sw', 'w'];
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var locationIndicies = {'nw':0, 'n':1, 'ne':2, 'e':3, 'se':4, 's':5, 'sw':6, 'w':7};
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var oppositeLocations = ['se', 's', 'sw', 'w', 'nw', 'n', 'ne', 'e'];
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// axis.renderer.tickrenderer.formatter
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// called with scope of plot
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$.jqplot.Highlighter.init = function (target, data, opts){
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var options = opts || {};
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// add a highlighter attribute to the plot
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this.plugins.highlighter = new $.jqplot.Highlighter(options.highlighter);
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};
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// called within scope of series
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$.jqplot.Highlighter.parseOptions = function (defaults, options) {
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// Add a showHighlight option to the series
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// and set it to true by default.
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this.showHighlight = true;
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};
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// called within context of plot
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// create a canvas which we can draw on.
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// insert it before the eventCanvas, so eventCanvas will still capture events.
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$.jqplot.Highlighter.postPlotDraw = function() {
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// Memory Leaks patch
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if (this.plugins.highlighter && this.plugins.highlighter.highlightCanvas) {
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this.plugins.highlighter.highlightCanvas.resetCanvas();
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this.plugins.highlighter.highlightCanvas = null;
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}
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if (this.plugins.highlighter && this.plugins.highlighter._tooltipElem) {
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this.plugins.highlighter._tooltipElem.emptyForce();
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this.plugins.highlighter._tooltipElem = null;
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}
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this.plugins.highlighter.highlightCanvas = new $.jqplot.GenericCanvas();
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this.eventCanvas._elem.before(this.plugins.highlighter.highlightCanvas.createElement(this._gridPadding, 'jqplot-highlight-canvas', this._plotDimensions, this));
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this.plugins.highlighter.highlightCanvas.setContext();
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var elem = document.createElement('div');
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this.plugins.highlighter._tooltipElem = $(elem);
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elem = null;
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this.plugins.highlighter._tooltipElem.addClass('jqplot-highlighter-tooltip');
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this.plugins.highlighter._tooltipElem.css({position:'absolute', display:'none'});
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this.eventCanvas._elem.before(this.plugins.highlighter._tooltipElem);
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};
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$.jqplot.preInitHooks.push($.jqplot.Highlighter.init);
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$.jqplot.preParseSeriesOptionsHooks.push($.jqplot.Highlighter.parseOptions);
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$.jqplot.postDrawHooks.push($.jqplot.Highlighter.postPlotDraw);
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function draw(plot, neighbor) {
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var hl = plot.plugins.highlighter;
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var s = plot.series[neighbor.seriesIndex];
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var smr = s.markerRenderer;
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var mr = hl.markerRenderer;
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mr.style = smr.style;
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mr.lineWidth = smr.lineWidth + hl.lineWidthAdjust;
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mr.size = smr.size + hl.sizeAdjust;
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var rgba = $.jqplot.getColorComponents(smr.color);
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var newrgb = [rgba[0], rgba[1], rgba[2]];
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var alpha = (rgba[3] >= 0.6) ? rgba[3]*0.6 : rgba[3]*(2-rgba[3]);
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mr.color = 'rgba('+newrgb[0]+','+newrgb[1]+','+newrgb[2]+','+alpha+')';
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mr.init();
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mr.draw(s.gridData[neighbor.pointIndex][0], s.gridData[neighbor.pointIndex][1], hl.highlightCanvas._ctx);
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}
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function showTooltip(plot, series, neighbor) {
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// neighbor looks like: {seriesIndex: i, pointIndex:j, gridData:p, data:s.data[j]}
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// gridData should be x,y pixel coords on the grid.
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// add the plot._gridPadding to that to get x,y in the target.
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var hl = plot.plugins.highlighter;
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var elem = hl._tooltipElem;
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var serieshl = series.highlighter || {};
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var opts = $.extend(true, {}, hl, serieshl);
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if (opts.useAxesFormatters) {
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var xf = series._xaxis._ticks[0].formatter;
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var yf = series._yaxis._ticks[0].formatter;
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var xfstr = series._xaxis._ticks[0].formatString;
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var yfstr = series._yaxis._ticks[0].formatString;
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var str;
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var xstr = xf(xfstr, neighbor.data[0]);
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var ystrs = [];
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for (var i=1; i<opts.yvalues+1; i++) {
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ystrs.push(yf(yfstr, neighbor.data[i]));
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}
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if (typeof opts.formatString === 'string') {
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switch (opts.tooltipAxes) {
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case 'both':
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case 'xy':
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ystrs.unshift(xstr);
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ystrs.unshift(opts.formatString);
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str = $.jqplot.sprintf.apply($.jqplot.sprintf, ystrs);
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break;
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case 'yx':
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ystrs.push(xstr);
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ystrs.unshift(opts.formatString);
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str = $.jqplot.sprintf.apply($.jqplot.sprintf, ystrs);
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break;
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case 'x':
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str = $.jqplot.sprintf.apply($.jqplot.sprintf, [opts.formatString, xstr]);
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break;
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case 'y':
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ystrs.unshift(opts.formatString);
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str = $.jqplot.sprintf.apply($.jqplot.sprintf, ystrs);
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break;
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default: // same as xy
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ystrs.unshift(xstr);
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ystrs.unshift(opts.formatString);
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str = $.jqplot.sprintf.apply($.jqplot.sprintf, ystrs);
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break;
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}
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}
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else {
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switch (opts.tooltipAxes) {
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case 'both':
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case 'xy':
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str = xstr;
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for (var i=0; i<ystrs.length; i++) {
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str += opts.tooltipSeparator + ystrs[i];
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}
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break;
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case 'yx':
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str = '';
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for (var i=0; i<ystrs.length; i++) {
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str += ystrs[i] + opts.tooltipSeparator;
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}
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str += xstr;
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break;
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case 'x':
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str = xstr;
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break;
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case 'y':
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str = ystrs.join(opts.tooltipSeparator);
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break;
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default: // same as 'xy'
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str = xstr;
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for (var i=0; i<ystrs.length; i++) {
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str += opts.tooltipSeparator + ystrs[i];
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}
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break;
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}
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}
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}
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else {
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var str;
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if (typeof opts.formatString === 'string') {
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str = $.jqplot.sprintf.apply($.jqplot.sprintf, [opts.formatString].concat(neighbor.data));
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}
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else {
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if (opts.tooltipAxes == 'both' || opts.tooltipAxes == 'xy') {
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str = $.jqplot.sprintf(opts.tooltipFormatString, neighbor.data[0]) + opts.tooltipSeparator + $.jqplot.sprintf(opts.tooltipFormatString, neighbor.data[1]);
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}
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else if (opts.tooltipAxes == 'yx') {
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str = $.jqplot.sprintf(opts.tooltipFormatString, neighbor.data[1]) + opts.tooltipSeparator + $.jqplot.sprintf(opts.tooltipFormatString, neighbor.data[0]);
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}
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else if (opts.tooltipAxes == 'x') {
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str = $.jqplot.sprintf(opts.tooltipFormatString, neighbor.data[0]);
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}
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else if (opts.tooltipAxes == 'y') {
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str = $.jqplot.sprintf(opts.tooltipFormatString, neighbor.data[1]);
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}
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}
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}
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if ($.isFunction(opts.tooltipContentEditor)) {
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// args str, seriesIndex, pointIndex are essential so the hook can look up
|
||
|
|
// extra data for the point.
|
||
|
|
str = opts.tooltipContentEditor(str, neighbor.seriesIndex, neighbor.pointIndex, plot);
|
||
|
|
}
|
||
|
|
elem.html(str);
|
||
|
|
var gridpos = {x:neighbor.gridData[0], y:neighbor.gridData[1]};
|
||
|
|
var ms = 0;
|
||
|
|
var fact = 0.707;
|
||
|
|
if (series.markerRenderer.show == true) {
|
||
|
|
ms = (series.markerRenderer.size + opts.sizeAdjust)/2;
|
||
|
|
}
|
||
|
|
|
||
|
|
var loc = locations;
|
||
|
|
if (series.fillToZero && series.fill && neighbor.data[1] < 0) {
|
||
|
|
loc = oppositeLocations;
|
||
|
|
}
|
||
|
|
|
||
|
|
switch (loc[locationIndicies[opts.tooltipLocation]]) {
|
||
|
|
case 'nw':
|
||
|
|
var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true) - opts.tooltipOffset - fact * ms;
|
||
|
|
var y = gridpos.y + plot._gridPadding.top - opts.tooltipOffset - elem.outerHeight(true) - fact * ms;
|
||
|
|
break;
|
||
|
|
case 'n':
|
||
|
|
var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true)/2;
|
||
|
|
var y = gridpos.y + plot._gridPadding.top - opts.tooltipOffset - elem.outerHeight(true) - ms;
|
||
|
|
break;
|
||
|
|
case 'ne':
|
||
|
|
var x = gridpos.x + plot._gridPadding.left + opts.tooltipOffset + fact * ms;
|
||
|
|
var y = gridpos.y + plot._gridPadding.top - opts.tooltipOffset - elem.outerHeight(true) - fact * ms;
|
||
|
|
break;
|
||
|
|
case 'e':
|
||
|
|
var x = gridpos.x + plot._gridPadding.left + opts.tooltipOffset + ms;
|
||
|
|
var y = gridpos.y + plot._gridPadding.top - elem.outerHeight(true)/2;
|
||
|
|
break;
|
||
|
|
case 'se':
|
||
|
|
var x = gridpos.x + plot._gridPadding.left + opts.tooltipOffset + fact * ms;
|
||
|
|
var y = gridpos.y + plot._gridPadding.top + opts.tooltipOffset + fact * ms;
|
||
|
|
break;
|
||
|
|
case 's':
|
||
|
|
var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true)/2;
|
||
|
|
var y = gridpos.y + plot._gridPadding.top + opts.tooltipOffset + ms;
|
||
|
|
break;
|
||
|
|
case 'sw':
|
||
|
|
var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true) - opts.tooltipOffset - fact * ms;
|
||
|
|
var y = gridpos.y + plot._gridPadding.top + opts.tooltipOffset + fact * ms;
|
||
|
|
break;
|
||
|
|
case 'w':
|
||
|
|
var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true) - opts.tooltipOffset - ms;
|
||
|
|
var y = gridpos.y + plot._gridPadding.top - elem.outerHeight(true)/2;
|
||
|
|
break;
|
||
|
|
default: // same as 'nw'
|
||
|
|
var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true) - opts.tooltipOffset - fact * ms;
|
||
|
|
var y = gridpos.y + plot._gridPadding.top - opts.tooltipOffset - elem.outerHeight(true) - fact * ms;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
elem.css('left', x);
|
||
|
|
elem.css('top', y);
|
||
|
|
if (opts.fadeTooltip) {
|
||
|
|
// Fix for stacked up animations. Thnanks Trevor!
|
||
|
|
elem.stop(true,true).fadeIn(opts.tooltipFadeSpeed);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
elem.show();
|
||
|
|
}
|
||
|
|
elem = null;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
function handleMove(ev, gridpos, datapos, neighbor, plot) {
|
||
|
|
var hl = plot.plugins.highlighter;
|
||
|
|
var c = plot.plugins.cursor;
|
||
|
|
if (hl.show) {
|
||
|
|
if (neighbor == null && hl.isHighlighting) {
|
||
|
|
var evt = jQuery.Event('jqplotHighlighterUnhighlight');
|
||
|
|
plot.target.trigger(evt);
|
||
|
|
|
||
|
|
var ctx = hl.highlightCanvas._ctx;
|
||
|
|
ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
|
||
|
|
if (hl.fadeTooltip) {
|
||
|
|
hl._tooltipElem.fadeOut(hl.tooltipFadeSpeed);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
hl._tooltipElem.hide();
|
||
|
|
}
|
||
|
|
if (hl.bringSeriesToFront) {
|
||
|
|
plot.restorePreviousSeriesOrder();
|
||
|
|
}
|
||
|
|
hl.isHighlighting = false;
|
||
|
|
hl.currentNeighbor = null;
|
||
|
|
ctx = null;
|
||
|
|
}
|
||
|
|
else if (neighbor != null && plot.series[neighbor.seriesIndex].showHighlight && !hl.isHighlighting) {
|
||
|
|
var evt = jQuery.Event('jqplotHighlighterHighlight');
|
||
|
|
evt.which = ev.which;
|
||
|
|
evt.pageX = ev.pageX;
|
||
|
|
evt.pageY = ev.pageY;
|
||
|
|
var ins = [neighbor.seriesIndex, neighbor.pointIndex, neighbor.data, plot];
|
||
|
|
plot.target.trigger(evt, ins);
|
||
|
|
|
||
|
|
hl.isHighlighting = true;
|
||
|
|
hl.currentNeighbor = neighbor;
|
||
|
|
if (hl.showMarker) {
|
||
|
|
draw(plot, neighbor);
|
||
|
|
}
|
||
|
|
if (hl.showTooltip && (!c || !c._zoom.started)) {
|
||
|
|
showTooltip(plot, plot.series[neighbor.seriesIndex], neighbor);
|
||
|
|
}
|
||
|
|
if (hl.bringSeriesToFront) {
|
||
|
|
plot.moveSeriesToFront(neighbor.seriesIndex);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// check to see if we're highlighting the wrong point.
|
||
|
|
else if (neighbor != null && hl.isHighlighting && hl.currentNeighbor != neighbor) {
|
||
|
|
// highlighting the wrong point.
|
||
|
|
|
||
|
|
// if new series allows highlighting, highlight new point.
|
||
|
|
if (plot.series[neighbor.seriesIndex].showHighlight) {
|
||
|
|
var ctx = hl.highlightCanvas._ctx;
|
||
|
|
ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
|
||
|
|
hl.isHighlighting = true;
|
||
|
|
hl.currentNeighbor = neighbor;
|
||
|
|
if (hl.showMarker) {
|
||
|
|
draw(plot, neighbor);
|
||
|
|
}
|
||
|
|
if (hl.showTooltip && (!c || !c._zoom.started)) {
|
||
|
|
showTooltip(plot, plot.series[neighbor.seriesIndex], neighbor);
|
||
|
|
}
|
||
|
|
if (hl.bringSeriesToFront) {
|
||
|
|
plot.moveSeriesToFront(neighbor.seriesIndex);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
})(jQuery);
|