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File Content: `jqplot.pointLabels.js`

/**
 * jqPlot
 * Pure JavaScript plotting plugin using jQuery
 *
 * Version: 1.0.9
 * Revision: dff2f04
 *
 * Copyright (c) 2009-2016 Chris Leonello
 * jqPlot is currently available for use in all personal or commercial projects 
 * under both the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL 
 * version 2.0 (http://www.gnu.org/licenses/gpl-2.0.html) licenses. This means that you can 
 * choose the license that best suits your project and use it accordingly. 
 *
 * Although not required, the author would appreciate an email letting him 
 * know of any substantial use of jqPlot.  You can reach the author at: 
 * chris at jqplot dot com or see http://www.jqplot.com/info.php .
 *
 * If you are feeling kind and generous, consider supporting the project by
 * making a donation at: http://www.jqplot.com/donate.php .
 *
 * sprintf functions contained in jqplot.sprintf.js by Ash Searle:
 *
 *     version 2007.04.27
 *     author Ash Searle
 *     http://hexmen.com/blog/2007/03/printf-sprintf/
 *     http://hexmen.com/js/sprintf.js
 *     The author (Ash Searle) has placed this code in the public domain:
 *     "This code is unrestricted: you are free to use it however you like."
 * 
 */
(function($) {
    
    /**
     * Class: $.jqplot.PointLabels
     * Plugin for putting labels at the data points.
     * 
     * To use this plugin, include the js
     * file in your source:
     * 
     * > <script type="text/javascript" src="plugins/jqplot.pointLabels.js"></script>
     * 
     * By default, the last value in the data ponit array in the data series is used
     * for the label.  For most series renderers, extra data can be added to the 
     * data point arrays and the last value will be used as the label.
     * 
     * For instance, 
     * this series:
     * 
     * > [[1,4], [3,5], [7,2]]
     * 
     * Would, by default, use the y values in the labels.
     * Extra data can be added to the series like so:
     * 
     * > [[1,4,'mid'], [3 5,'hi'], [7,2,'low']]
     * 
     * And now the point labels would be 'mid', 'low', and 'hi'.
     * 
     * Options to the point labels and a custom labels array can be passed into the
     * "pointLabels" option on the series option like so:
     * 
     * > series:[{pointLabels:{
     * >    labels:['mid', 'hi', 'low'],
     * >    location:'se',
     * >    ypadding: 12
     * >    }
     * > }]
     * 
     * A custom labels array in the options takes precendence over any labels
     * in the series data.  If you have a custom labels array in the options,
     * but still want to use values from the series array as labels, set the
     * "labelsFromSeries" option to true.
     * 
     * By default, html entities (<, >, etc.) are escaped in point labels.  
     * If you want to include actual html markup in the labels, 
     * set the "escapeHTML" option to false.
     * 
     */
    $.jqplot.PointLabels = function(options) {
        // Group: Properties
        //
        // prop: show
        // show the labels or not.
        this.show = $.jqplot.config.enablePlugins;
        // prop: location
        // compass location where to position the label around the point.
        // 'n', 'ne', 'e', 'se', 's', 'sw', 'w', 'nw'
        this.location = 'n';
        // prop: labelsFromSeries
        // true to use labels within data point arrays.
        this.labelsFromSeries = false;
        // prop: seriesLabelIndex
        // array index for location of labels within data point arrays.
        // if null, will use the last element of the data point array.
        this.seriesLabelIndex = null;
        // prop: labels
        // array of arrays of labels, one array for each series.
        this.labels = [];
        // actual labels that will get displayed.
        // needed to preserve user specified labels in labels array.
        this._labels = [];
        // prop: stackedValue
        // true to display value as stacked in a stacked plot.
        // no effect if labels is specified.
        this.stackedValue = false;
        // prop: ypadding
        // vertical padding in pixels between point and label
        this.ypadding = 6;
        // prop: xpadding
        // horizontal padding in pixels between point and label
        this.xpadding = 6;
        // prop: escapeHTML
        // true to escape html entities in the labels.
        // If you want to include markup in the labels, set to false.
        this.escapeHTML = true;
        // prop: edgeTolerance
        // Number of pixels that the label must be away from an axis
        // boundary in order to be drawn.  Negative values will allow overlap
        // with the grid boundaries.
        this.edgeTolerance = -5;
        // prop: formatter
        // A class of a formatter for the tick text.  sprintf by default.
        this.formatter = $.jqplot.DefaultTickFormatter;
        // prop: formatString
        // string passed to the formatter.
        this.formatString = '';
        // prop: hideZeros
        // true to not show a label for a value which is 0.
        this.hideZeros = false;
        this._elems = [];
        
        $.extend(true, this, options);
    };
    
    var locations = ['nw', 'n', 'ne', 'e', 'se', 's', 'sw', 'w'];
    var locationIndicies = {'nw':0, 'n':1, 'ne':2, 'e':3, 'se':4, 's':5, 'sw':6, 'w':7};
    var oppositeLocations = ['se', 's', 'sw', 'w', 'nw', 'n', 'ne', 'e'];
    
    // called with scope of a series
    $.jqplot.PointLabels.init = function (target, data, seriesDefaults, opts, plot){
        var options = $.extend(true, {}, seriesDefaults, opts);
        options.pointLabels = options.pointLabels || {};
        if (this.renderer.constructor === $.jqplot.BarRenderer && this.barDirection === 'horizontal' && !options.pointLabels.location) {
            options.pointLabels.location = 'e';
        }
        // add a pointLabels attribute to the series plugins
        this.plugins.pointLabels = new $.jqplot.PointLabels(options.pointLabels);
        this.plugins.pointLabels.setLabels.call(this);
    };
    
    // called with scope of series
    $.jqplot.PointLabels.prototype.setLabels = function() {   
        var p = this.plugins.pointLabels; 
        var labelIdx;
        if (p.seriesLabelIndex != null) {
            labelIdx = p.seriesLabelIndex;
        }
        else if (this.renderer.constructor === $.jqplot.BarRenderer && this.barDirection === 'horizontal') {
           labelIdx = (this._plotData[0].length < 3) ? 0 : this._plotData[0].length -1;
        }
        else {
            labelIdx = (this._plotData.length === 0) ? 0 : this._plotData[0].length -1;
        }
        p._labels = [];
        if (p.labels.length === 0 || p.labelsFromSeries) {    
            if (p.stackedValue) {
                if (this._plotData.length && this._plotData[0].length){
                    // var idx = p.seriesLabelIndex || this._plotData[0].length -1;
                    for (var i=0; i<this._plotData.length; i++) {
                        p._labels.push(this._plotData[i][labelIdx]);
                    }
                }
            }
            else {
                // var d = this._plotData;
                var d = this.data;
                if (this.renderer.constructor === $.jqplot.BarRenderer && this.waterfall) {
                    d = this._data;
                }
                if (d.length && d[0].length) {
                    // var idx = p.seriesLabelIndex || d[0].length -1;
                    for (var i=0; i<d.length; i++) {
                        p._labels.push(d[i][labelIdx]);
                    }
                }
                d = null;
            }
        }
        else if (p.labels.length){
            p._labels = p.labels;
        }
    };
    
    $.jqplot.PointLabels.prototype.xOffset = function(elem, location, padding) {
        location = location || this.location;
        padding = padding || this.xpadding;
        var offset;
        
        switch (location) {
            case 'nw':
                offset = -elem.outerWidth(true) - this.xpadding;
                break;
            case 'n':
                offset = -elem.outerWidth(true)/2;
                break;
            case 'ne':
                offset =  this.xpadding;
                break;
            case 'e':
                offset = this.xpadding;
                break;
            case 'se':
                offset = this.xpadding;
                break;
            case 's':
                offset = -elem.outerWidth(true)/2;
                break;
            case 'sw':
                offset = -elem.outerWidth(true) - this.xpadding;
                break;
            case 'w':
                offset = -elem.outerWidth(true) - this.xpadding;
                break;
            default: // same as 'nw'
                offset = -elem.outerWidth(true) - this.xpadding;
                break;
        }
        return offset; 
    };
    
    $.jqplot.PointLabels.prototype.yOffset = function(elem, location, padding) {
        location = location || this.location;
        padding = padding || this.xpadding;
        var offset;
        
        switch (location) {
            case 'nw':
                offset = -elem.outerHeight(true) - this.ypadding;
                break;
            case 'n':
                offset = -elem.outerHeight(true) - this.ypadding;
                break;
            case 'ne':
                offset = -elem.outerHeight(true) - this.ypadding;
                break;
            case 'e':
                offset = -elem.outerHeight(true)/2;
                break;
            case 'se':
                offset = this.ypadding;
                break;
            case 's':
                offset = this.ypadding;
                break;
            case 'sw':
                offset = this.ypadding;
                break;
            case 'w':
                offset = -elem.outerHeight(true)/2;
                break;
            default: // same as 'nw'
                offset = -elem.outerHeight(true) - this.ypadding;
                break;
        }
        return offset; 
    };
    
    // called with scope of series
    $.jqplot.PointLabels.draw = function (sctx, options, plot) {
        var p = this.plugins.pointLabels;
        // set labels again in case they have changed.
        p.setLabels.call(this);
        // remove any previous labels
        for (var i=0; i<p._elems.length; i++) {
            // Memory Leaks patch
            // p._elems[i].remove();
            if(p._elems[i]) {
                p._elems[i].emptyForce();
            }
        }
        p._elems.splice(0, p._elems.length);

        if (p.show) {
            var ax = '_'+this._stackAxis+'axis';
        
            if (!p.formatString) {
                p.formatString = this[ax]._ticks[0].formatString;
                p.formatter = this[ax]._ticks[0].formatter;
            }
        
            var pd = this._plotData;
            var ppd = this._prevPlotData;
            var xax = this._xaxis;
            var yax = this._yaxis;
            var elem, helem;

            for (var i=0, l=p._labels.length; i < l; i++) {
                var label = p._labels[i];
                
                if (label == null || (p.hideZeros && parseFloat(label) == 0)) {
                    continue;
                }
                
                label = p.formatter(p.formatString, label);

                helem = document.createElement('div');
                p._elems[i] = $(helem);

                elem = p._elems[i];


                elem.addClass('jqplot-point-label jqplot-series-'+this.index+' jqplot-point-'+i);
                elem.css('position', 'absolute');
                elem.insertAfter(sctx.canvas);

                if (p.escapeHTML) {
                    elem.text(label);
                }
                else {
                    elem.html(label);
                }
                var location = p.location;
                if ((this.fillToZero && pd[i][1] < 0) || (this.fillToZero && this._type === 'bar' && this.barDirection === 'horizontal' && pd[i][0] < 0) || (this.waterfall && parseInt(label, 10)) < 0) {
                    location = oppositeLocations[locationIndicies[location]];
                }


                var ell = xax.u2p(pd[i][0]) + p.xOffset(elem, location);
                var elt = yax.u2p(pd[i][1]) + p.yOffset(elem, location);

                // we have stacked chart but are not showing stacked values,
                // place labels in center.
                if (this._stack && !p.stackedValue) {
                    if (this.barDirection === "vertical") {
                        elt = (this._barPoints[i][0][1] + this._barPoints[i][1][1]) / 2 + plot._gridPadding.top - 0.5 * elem.outerHeight(true);
                    }
                    else {
                        ell = (this._barPoints[i][2][0] + this._barPoints[i][0][0]) / 2 + plot._gridPadding.left - 0.5 * elem.outerWidth(true);
                    }
                }

                if (this.renderer.constructor == $.jqplot.BarRenderer) {
                    if (this.barDirection == "vertical") {
                        ell += this._barNudge;
                    }
                    else {
                        elt -= this._barNudge;
                    }
                }
                elem.css('left', ell);
                elem.css('top', elt);
                var elr = ell + elem.width();
                var elb = elt + elem.height();
                var et = p.edgeTolerance;
                var scl = $(sctx.canvas).position().left;
                var sct = $(sctx.canvas).position().top;
                var scr = sctx.canvas.width + scl;
                var scb = sctx.canvas.height + sct;
                // if label is outside of allowed area, remove it
                if (ell - et < scl || elt - et < sct || elr + et > scr || elb + et > scb) {
                    elem.remove();
                }

                elem = null;
                helem = null;
            }

            // finally, animate them if the series is animated
            // if (this.renderer.animation && this.renderer.animation._supported && this.renderer.animation.show && plot._drawCount < 2) {
            //     var sel = '.jqplot-point-label.jqplot-series-'+this.index;
            //     $(sel).hide();
            //     $(sel).fadeIn(1000);
            // }

        }
    };
    
    $.jqplot.postSeriesInitHooks.push($.jqplot.PointLabels.init);
    $.jqplot.postDrawSeriesHooks.push($.jqplot.PointLabels.draw);
})(jQuery);
Name	Size	Permission
jqplot.barRenderer.js	35014 bytes	0754
jqplot.canvasAxisLabelRenderer.js	8146 bytes	0754
jqplot.canvasTextRenderer.js	24367 bytes	0754
jqplot.categoryAxisRenderer.js	28566 bytes	0754
jqplot.cursor.js	48326 bytes	0754
jqplot.dateAxisRenderer.js	30349 bytes	0754
jqplot.enhancedPieLegendRenderer.js	11294 bytes	0754
jqplot.highlighter.js	22024 bytes	0754
jqplot.pieRenderer.js	37544 bytes	0754
jqplot.pointLabels.js	14593 bytes	0754
File Content: jqplot.pointLabels.js

File Content: `jqplot.pointLabels.js`
