636 lines
26 KiB
JavaScript
636 lines
26 KiB
JavaScript
/**
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* jqPlot
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* Pure JavaScript plotting plugin using jQuery
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*
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* Version: 1.0.0b2_r792
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*
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* Copyright (c) 2009-2011 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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/**
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* class: $.jqplot.CategoryAxisRenderer
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* A plugin for jqPlot to render a category style axis, with equal pixel spacing between y data values of a series.
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*
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* To use this renderer, include the plugin in your source
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* > <script type="text/javascript" language="javascript" src="plugins/jqplot.categoryAxisRenderer.js"></script>
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*
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* and supply the appropriate options to your plot
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*
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* > {axes:{xaxis:{renderer:$.jqplot.CategoryAxisRenderer}}}
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**/
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$.jqplot.CategoryAxisRenderer = function(options) {
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$.jqplot.LinearAxisRenderer.call(this);
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// prop: sortMergedLabels
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// True to sort tick labels when labels are created by merging
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// x axis values from multiple series. That is, say you have
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// two series like:
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// > line1 = [[2006, 4], [2008, 9], [2009, 16]];
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// > line2 = [[2006, 3], [2007, 7], [2008, 6]];
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// If no label array is specified, tick labels will be collected
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// from the x values of the series. With sortMergedLabels
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// set to true, tick labels will be:
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// > [2006, 2007, 2008, 2009]
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// With sortMergedLabels set to false, tick labels will be:
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// > [2006, 2008, 2009, 2007]
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//
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// Note, this property is specified on the renderOptions for the
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// axes when creating a plot:
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// > axes:{xaxis:{renderer:$.jqplot.CategoryAxisRenderer, rendererOptions:{sortMergedLabels:true}}}
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this.sortMergedLabels = false;
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};
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$.jqplot.CategoryAxisRenderer.prototype = new $.jqplot.LinearAxisRenderer();
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$.jqplot.CategoryAxisRenderer.prototype.constructor = $.jqplot.CategoryAxisRenderer;
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$.jqplot.CategoryAxisRenderer.prototype.init = function(options){
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this.groups = 1;
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this.groupLabels = [];
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this._groupLabels = [];
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this._grouped = false;
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this._barsPerGroup = null;
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// prop: tickRenderer
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// A class of a rendering engine for creating the ticks labels displayed on the plot,
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// See <$.jqplot.AxisTickRenderer>.
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// this.tickRenderer = $.jqplot.AxisTickRenderer;
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// this.labelRenderer = $.jqplot.AxisLabelRenderer;
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$.extend(true, this, {tickOptions:{formatString:'%d'}}, options);
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var db = this._dataBounds;
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// Go through all the series attached to this axis and find
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// the min/max bounds for this axis.
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for (var i=0; i<this._series.length; i++) {
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var s = this._series[i];
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if (s.groups) {
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this.groups = s.groups;
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}
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var d = s.data;
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for (var j=0; j<d.length; j++) {
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if (this.name == 'xaxis' || this.name == 'x2axis') {
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if (d[j][0] < db.min || db.min == null) {
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db.min = d[j][0];
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}
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if (d[j][0] > db.max || db.max == null) {
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db.max = d[j][0];
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}
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}
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else {
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if (d[j][1] < db.min || db.min == null) {
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db.min = d[j][1];
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}
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if (d[j][1] > db.max || db.max == null) {
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db.max = d[j][1];
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}
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}
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}
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}
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if (this.groupLabels.length) {
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this.groups = this.groupLabels.length;
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}
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};
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$.jqplot.CategoryAxisRenderer.prototype.createTicks = function() {
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// we're are operating on an axis here
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var ticks = this._ticks;
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var userTicks = this.ticks;
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var name = this.name;
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// databounds were set on axis initialization.
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var db = this._dataBounds;
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var dim, interval;
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var min, max;
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var pos1, pos2;
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var tt, i;
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// if we already have ticks, use them.
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if (userTicks.length) {
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// adjust with blanks if we have groups
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if (this.groups > 1 && !this._grouped) {
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var l = userTicks.length;
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var skip = parseInt(l/this.groups, 10);
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var count = 0;
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for (var i=skip; i<l; i+=skip) {
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userTicks.splice(i+count, 0, ' ');
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count++;
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}
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this._grouped = true;
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}
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this.min = 0.5;
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this.max = userTicks.length + 0.5;
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var range = this.max - this.min;
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this.numberTicks = 2*userTicks.length + 1;
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for (i=0; i<userTicks.length; i++){
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tt = this.min + 2 * i * range / (this.numberTicks-1);
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// need a marker before and after the tick
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var t = new this.tickRenderer(this.tickOptions);
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t.showLabel = false;
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// t.showMark = true;
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t.setTick(tt, this.name);
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this._ticks.push(t);
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var t = new this.tickRenderer(this.tickOptions);
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t.label = userTicks[i];
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// t.showLabel = true;
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t.showMark = false;
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t.showGridline = false;
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t.setTick(tt+0.5, this.name);
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this._ticks.push(t);
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}
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// now add the last tick at the end
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var t = new this.tickRenderer(this.tickOptions);
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t.showLabel = false;
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// t.showMark = true;
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t.setTick(tt+1, this.name);
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this._ticks.push(t);
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}
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// we don't have any ticks yet, let's make some!
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else {
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if (name == 'xaxis' || name == 'x2axis') {
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dim = this._plotDimensions.width;
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}
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else {
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dim = this._plotDimensions.height;
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}
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// if min, max and number of ticks specified, user can't specify interval.
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if (this.min != null && this.max != null && this.numberTicks != null) {
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this.tickInterval = null;
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}
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// if max, min, and interval specified and interval won't fit, ignore interval.
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if (this.min != null && this.max != null && this.tickInterval != null) {
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if (parseInt((this.max-this.min)/this.tickInterval, 10) != (this.max-this.min)/this.tickInterval) {
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this.tickInterval = null;
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}
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}
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// find out how many categories are in the lines and collect labels
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var labels = [];
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var numcats = 0;
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var min = 0.5;
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var max, val;
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var isMerged = false;
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for (var i=0; i<this._series.length; i++) {
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var s = this._series[i];
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for (var j=0; j<s.data.length; j++) {
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if (this.name == 'xaxis' || this.name == 'x2axis') {
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val = s.data[j][0];
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}
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else {
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val = s.data[j][1];
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}
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if ($.inArray(val, labels) == -1) {
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isMerged = true;
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numcats += 1;
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labels.push(val);
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}
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}
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}
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if (isMerged && this.sortMergedLabels) {
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labels.sort(function(a,b) { return a - b; });
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}
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// keep a reference to these tick labels to use for redrawing plot (see bug #57)
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this.ticks = labels;
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// now bin the data values to the right lables.
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for (var i=0; i<this._series.length; i++) {
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var s = this._series[i];
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for (var j=0; j<s.data.length; j++) {
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if (this.name == 'xaxis' || this.name == 'x2axis') {
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val = s.data[j][0];
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}
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else {
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val = s.data[j][1];
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}
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// for category axis, force the values into category bins.
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// we should have the value in the label array now.
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var idx = $.inArray(val, labels)+1;
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if (this.name == 'xaxis' || this.name == 'x2axis') {
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s.data[j][0] = idx;
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}
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else {
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s.data[j][1] = idx;
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}
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}
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}
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// adjust with blanks if we have groups
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if (this.groups > 1 && !this._grouped) {
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var l = labels.length;
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var skip = parseInt(l/this.groups, 10);
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var count = 0;
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for (var i=skip; i<l; i+=skip+1) {
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labels[i] = ' ';
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}
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this._grouped = true;
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}
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max = numcats + 0.5;
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if (this.numberTicks == null) {
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this.numberTicks = 2*numcats + 1;
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}
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var range = max - min;
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this.min = min;
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this.max = max;
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var track = 0;
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// todo: adjust this so more ticks displayed.
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var maxVisibleTicks = parseInt(3+dim/20, 10);
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var skip = parseInt(numcats/maxVisibleTicks, 10);
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if (this.tickInterval == null) {
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this.tickInterval = range / (this.numberTicks-1);
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}
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// if tickInterval is specified, we will ignore any computed maximum.
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for (var i=0; i<this.numberTicks; i++){
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tt = this.min + i * this.tickInterval;
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var t = new this.tickRenderer(this.tickOptions);
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// if even tick, it isn't a category, it's a divider
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if (i/2 == parseInt(i/2, 10)) {
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t.showLabel = false;
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t.showMark = true;
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}
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else {
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if (skip>0 && track<skip) {
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t.showLabel = false;
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track += 1;
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}
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else {
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t.showLabel = true;
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track = 0;
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}
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t.label = t.formatter(t.formatString, labels[(i-1)/2]);
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t.showMark = false;
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t.showGridline = false;
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}
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t.setTick(tt, this.name);
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this._ticks.push(t);
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}
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}
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};
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// called with scope of axis
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$.jqplot.CategoryAxisRenderer.prototype.draw = function(ctx, plot) {
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if (this.show) {
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// populate the axis label and value properties.
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// createTicks is a method on the renderer, but
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// call it within the scope of the axis.
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this.renderer.createTicks.call(this);
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// fill a div with axes labels in the right direction.
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// Need to pregenerate each axis to get it's bounds and
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// position it and the labels correctly on the plot.
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var dim=0;
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var temp;
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// Added for theming.
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if (this._elem) {
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// this._elem.empty();
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// Memory Leaks patch
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this._elem.emptyForce();
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}
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this._elem = this._elem || $('<div class="jqplot-axis jqplot-'+this.name+'" style="position:absolute;"></div>');
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if (this.name == 'xaxis' || this.name == 'x2axis') {
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this._elem.width(this._plotDimensions.width);
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}
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else {
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this._elem.height(this._plotDimensions.height);
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}
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// create a _label object.
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this.labelOptions.axis = this.name;
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this._label = new this.labelRenderer(this.labelOptions);
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if (this._label.show) {
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var elem = this._label.draw(ctx, plot);
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elem.appendTo(this._elem);
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}
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var t = this._ticks;
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for (var i=0; i<t.length; i++) {
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var tick = t[i];
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if (tick.showLabel && (!tick.isMinorTick || this.showMinorTicks)) {
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var elem = tick.draw(ctx, plot);
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elem.appendTo(this._elem);
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}
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}
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this._groupLabels = [];
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// now make group labels
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for (var i=0; i<this.groupLabels.length; i++)
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{
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var elem = $('<div style="position:absolute;" class="jqplot-'+this.name+'-groupLabel"></div>');
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elem.html(this.groupLabels[i]);
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this._groupLabels.push(elem);
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elem.appendTo(this._elem);
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}
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}
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return this._elem;
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};
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// called with scope of axis
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$.jqplot.CategoryAxisRenderer.prototype.set = function() {
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var dim = 0;
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var temp;
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var w = 0;
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var h = 0;
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var lshow = (this._label == null) ? false : this._label.show;
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if (this.show) {
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var t = this._ticks;
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for (var i=0; i<t.length; i++) {
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var tick = t[i];
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if (tick.showLabel && (!tick.isMinorTick || this.showMinorTicks)) {
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if (this.name == 'xaxis' || this.name == 'x2axis') {
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temp = tick._elem.outerHeight(true);
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}
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else {
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temp = tick._elem.outerWidth(true);
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}
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if (temp > dim) {
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dim = temp;
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}
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}
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}
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var dim2 = 0;
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for (var i=0; i<this._groupLabels.length; i++) {
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var l = this._groupLabels[i];
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if (this.name == 'xaxis' || this.name == 'x2axis') {
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temp = l.outerHeight(true);
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}
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else {
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temp = l.outerWidth(true);
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}
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if (temp > dim2) {
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dim2 = temp;
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}
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}
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if (lshow) {
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w = this._label._elem.outerWidth(true);
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h = this._label._elem.outerHeight(true);
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}
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if (this.name == 'xaxis') {
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dim += dim2 + h;
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this._elem.css({'height':dim+'px', left:'0px', bottom:'0px'});
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}
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else if (this.name == 'x2axis') {
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dim += dim2 + h;
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this._elem.css({'height':dim+'px', left:'0px', top:'0px'});
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}
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else if (this.name == 'yaxis') {
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dim += dim2 + w;
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this._elem.css({'width':dim+'px', left:'0px', top:'0px'});
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if (lshow && this._label.constructor == $.jqplot.AxisLabelRenderer) {
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this._label._elem.css('width', w+'px');
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}
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}
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else {
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dim += dim2 + w;
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this._elem.css({'width':dim+'px', right:'0px', top:'0px'});
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if (lshow && this._label.constructor == $.jqplot.AxisLabelRenderer) {
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this._label._elem.css('width', w+'px');
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}
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}
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}
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};
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// called with scope of axis
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$.jqplot.CategoryAxisRenderer.prototype.pack = function(pos, offsets) {
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var ticks = this._ticks;
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var max = this.max;
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var min = this.min;
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var offmax = offsets.max;
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var offmin = offsets.min;
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var lshow = (this._label == null) ? false : this._label.show;
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var i;
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for (var p in pos) {
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this._elem.css(p, pos[p]);
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}
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this._offsets = offsets;
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// pixellength will be + for x axes and - for y axes becasue pixels always measured from top left.
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var pixellength = offmax - offmin;
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var unitlength = max - min;
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// point to unit and unit to point conversions references to Plot DOM element top left corner.
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this.p2u = function(p){
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return (p - offmin) * unitlength / pixellength + min;
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};
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this.u2p = function(u){
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return (u - min) * pixellength / unitlength + offmin;
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};
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if (this.name == 'xaxis' || this.name == 'x2axis'){
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this.series_u2p = function(u){
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return (u - min) * pixellength / unitlength;
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};
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this.series_p2u = function(p){
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return p * unitlength / pixellength + min;
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};
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}
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else {
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this.series_u2p = function(u){
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return (u - max) * pixellength / unitlength;
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};
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this.series_p2u = function(p){
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return p * unitlength / pixellength + max;
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};
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}
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if (this.show) {
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if (this.name == 'xaxis' || this.name == 'x2axis') {
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for (i=0; i<ticks.length; i++) {
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var t = ticks[i];
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if (t.show && t.showLabel) {
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var shim;
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if (t.constructor == $.jqplot.CanvasAxisTickRenderer && t.angle) {
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// will need to adjust auto positioning based on which axis this is.
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var temp = (this.name == 'xaxis') ? 1 : -1;
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switch (t.labelPosition) {
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case 'auto':
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// position at end
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if (temp * t.angle < 0) {
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shim = -t.getWidth() + t._textRenderer.height * Math.sin(-t._textRenderer.angle) / 2;
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}
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// position at start
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else {
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shim = -t._textRenderer.height * Math.sin(t._textRenderer.angle) / 2;
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}
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break;
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case 'end':
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shim = -t.getWidth() + t._textRenderer.height * Math.sin(-t._textRenderer.angle) / 2;
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break;
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case 'start':
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shim = -t._textRenderer.height * Math.sin(t._textRenderer.angle) / 2;
|
|
break;
|
|
case 'middle':
|
|
shim = -t.getWidth()/2 + t._textRenderer.height * Math.sin(-t._textRenderer.angle) / 2;
|
|
break;
|
|
default:
|
|
shim = -t.getWidth()/2 + t._textRenderer.height * Math.sin(-t._textRenderer.angle) / 2;
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
shim = -t.getWidth()/2;
|
|
}
|
|
var val = this.u2p(t.value) + shim + 'px';
|
|
t._elem.css('left', val);
|
|
t.pack();
|
|
}
|
|
}
|
|
|
|
var labeledge=['bottom', 0];
|
|
if (lshow) {
|
|
var w = this._label._elem.outerWidth(true);
|
|
this._label._elem.css('left', offmin + pixellength/2 - w/2 + 'px');
|
|
if (this.name == 'xaxis') {
|
|
this._label._elem.css('bottom', '0px');
|
|
labeledge = ['bottom', this._label._elem.outerHeight(true)];
|
|
}
|
|
else {
|
|
this._label._elem.css('top', '0px');
|
|
labeledge = ['top', this._label._elem.outerHeight(true)];
|
|
}
|
|
this._label.pack();
|
|
}
|
|
|
|
// draw the group labels
|
|
var step = parseInt(this._ticks.length/this.groups, 10);
|
|
for (i=0; i<this._groupLabels.length; i++) {
|
|
var mid = 0;
|
|
var count = 0;
|
|
for (var j=i*step; j<=(i+1)*step; j++) {
|
|
if (this._ticks[j]._elem && this._ticks[j].label != " ") {
|
|
var t = this._ticks[j]._elem;
|
|
var p = t.position();
|
|
mid += p.left + t.outerWidth(true)/2;
|
|
count++;
|
|
}
|
|
}
|
|
mid = mid/count;
|
|
this._groupLabels[i].css({'left':(mid - this._groupLabels[i].outerWidth(true)/2)});
|
|
this._groupLabels[i].css(labeledge[0], labeledge[1]);
|
|
}
|
|
}
|
|
else {
|
|
for (i=0; i<ticks.length; i++) {
|
|
var t = ticks[i];
|
|
if (t.show && t.showLabel) {
|
|
var shim;
|
|
if (t.constructor == $.jqplot.CanvasAxisTickRenderer && t.angle) {
|
|
// will need to adjust auto positioning based on which axis this is.
|
|
var temp = (this.name == 'yaxis') ? 1 : -1;
|
|
switch (t.labelPosition) {
|
|
case 'auto':
|
|
// position at end
|
|
case 'end':
|
|
if (temp * t.angle < 0) {
|
|
shim = -t._textRenderer.height * Math.cos(-t._textRenderer.angle) / 2;
|
|
}
|
|
else {
|
|
shim = -t.getHeight() + t._textRenderer.height * Math.cos(t._textRenderer.angle) / 2;
|
|
}
|
|
break;
|
|
case 'start':
|
|
if (t.angle > 0) {
|
|
shim = -t._textRenderer.height * Math.cos(-t._textRenderer.angle) / 2;
|
|
}
|
|
else {
|
|
shim = -t.getHeight() + t._textRenderer.height * Math.cos(t._textRenderer.angle) / 2;
|
|
}
|
|
break;
|
|
case 'middle':
|
|
// if (t.angle > 0) {
|
|
// shim = -t.getHeight()/2 + t._textRenderer.height * Math.sin(-t._textRenderer.angle) / 2;
|
|
// }
|
|
// else {
|
|
// shim = -t.getHeight()/2 - t._textRenderer.height * Math.sin(t._textRenderer.angle) / 2;
|
|
// }
|
|
shim = -t.getHeight()/2;
|
|
break;
|
|
default:
|
|
shim = -t.getHeight()/2;
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
shim = -t.getHeight()/2;
|
|
}
|
|
|
|
var val = this.u2p(t.value) + shim + 'px';
|
|
t._elem.css('top', val);
|
|
t.pack();
|
|
}
|
|
}
|
|
|
|
var labeledge=['left', 0];
|
|
if (lshow) {
|
|
var h = this._label._elem.outerHeight(true);
|
|
this._label._elem.css('top', offmax - pixellength/2 - h/2 + 'px');
|
|
if (this.name == 'yaxis') {
|
|
this._label._elem.css('left', '0px');
|
|
labeledge = ['left', this._label._elem.outerWidth(true)];
|
|
}
|
|
else {
|
|
this._label._elem.css('right', '0px');
|
|
labeledge = ['right', this._label._elem.outerWidth(true)];
|
|
}
|
|
this._label.pack();
|
|
}
|
|
|
|
// draw the group labels, position top here, do left after label position.
|
|
var step = parseInt(this._ticks.length/this.groups, 10);
|
|
for (i=0; i<this._groupLabels.length; i++) {
|
|
var mid = 0;
|
|
var count = 0;
|
|
for (var j=i*step; j<=(i+1)*step; j++) {
|
|
if (this._ticks[j]._elem && this._ticks[j].label != " ") {
|
|
var t = this._ticks[j]._elem;
|
|
var p = t.position();
|
|
mid += p.top + t.outerHeight()/2;
|
|
count++;
|
|
}
|
|
}
|
|
mid = mid/count;
|
|
this._groupLabels[i].css({'top':mid - this._groupLabels[i].outerHeight()/2});
|
|
this._groupLabels[i].css(labeledge[0], labeledge[1]);
|
|
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
|
|
})(jQuery); |