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611 lines
25 KiB
JavaScript
611 lines
25 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_r947
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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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// class: $.jqplot.MekkoAxisRenderer
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// An axis renderer for a Mekko chart.
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// Should be used with a Mekko chart where the mekkoRenderer is used on the series.
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// Displays the Y axis as a range from 0 to 1 (0 to 100%) and the x axis with a tick
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// for each series scaled to the sum of all the y values.
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$.jqplot.MekkoAxisRenderer = function() {
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};
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// called with scope of axis object.
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$.jqplot.MekkoAxisRenderer.prototype.init = function(options){
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// prop: tickMode
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// How to space the ticks on the axis.
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// 'bar' will place a tick at the width of each bar.
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// This is the default for the x axis.
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// 'even' will place ticks at even intervals. This is
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// the default for x2 axis and y axis. y axis cannot be changed.
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this.tickMode;
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// prop: barLabelRenderer
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// renderer to use to draw labels under each bar.
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this.barLabelRenderer = $.jqplot.AxisLabelRenderer;
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// prop: barLabels
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// array of labels to put under each bar.
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this.barLabels = this.barLabels || [];
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// prop: barLabelOptions
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// options object to pass to the bar label renderer.
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this.barLabelOptions = {};
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this.tickOptions = $.extend(true, {showGridline:false}, this.tickOptions);
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this._barLabels = [];
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$.extend(true, this, options);
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if (this.name == 'yaxis') {
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this.tickOptions.formatString = this.tickOptions.formatString || "%d\%";
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}
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var db = this._dataBounds;
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db.min = 0;
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// for y axes, scale always go from 0 to 1 (0 to 100%)
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if (this.name == 'yaxis' || this.name == 'y2axis') {
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db.max = 100;
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this.tickMode = 'even';
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}
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// For x axes, scale goes from 0 to sum of all y values.
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else if (this.name == 'xaxis'){
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this.tickMode = (this.tickMode == null) ? 'bar' : this.tickMode;
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for (var i=0; i<this._series.length; i++) {
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db.max += this._series[i]._sumy;
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}
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}
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else if (this.name == 'x2axis'){
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this.tickMode = (this.tickMode == null) ? 'even' : this.tickMode;
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for (var i=0; i<this._series.length; i++) {
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db.max += this._series[i]._sumy;
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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.MekkoAxisRenderer.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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var elem = document.createElement('div');
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this._elem = $(elem);
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this._elem.addClass('jqplot-axis jqplot-'+this.name);
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this._elem.css('position', 'absolute');
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elem = null;
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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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// draw the axis label
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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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this._elem.append(this._label.draw(ctx));
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}
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var t, tick, elem;
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if (this.showTicks) {
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t = this._ticks;
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for (var i=0; i<t.length; i++) {
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tick = t[i];
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if (tick.showLabel && (!tick.isMinorTick || this.showMinorTicks)) {
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this._elem.append(tick.draw(ctx));
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}
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}
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}
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// draw the series labels
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for (i=0; i<this.barLabels.length; i++) {
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this.barLabelOptions.axis = this.name;
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this.barLabelOptions.label = this.barLabels[i];
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this._barLabels.push(new this.barLabelRenderer(this.barLabelOptions));
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if (this.tickMode != 'bar') {
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this._barLabels[i].show = false;
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}
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if (this._barLabels[i].show) {
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var elem = this._barLabels[i].draw(ctx, plot);
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elem.removeClass('jqplot-'+this.name+'-label');
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elem.addClass('jqplot-'+this.name+'-tick');
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elem.addClass('jqplot-mekko-barLabel');
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elem.appendTo(this._elem);
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elem = null;
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}
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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 an axis
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$.jqplot.MekkoAxisRenderer.prototype.reset = function() {
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this.min = this._min;
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this.max = this._max;
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this.tickInterval = this._tickInterval;
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this.numberTicks = this._numberTicks;
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// this._ticks = this.__ticks;
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};
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// called with scope of axis
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$.jqplot.MekkoAxisRenderer.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 && this.showTicks) {
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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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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 = dim + 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 = dim + 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 = dim + 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 = dim + 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.MekkoAxisRenderer.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 t, tt, i, j;
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// if we already have ticks, use them.
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// ticks must be in order of increasing value.
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if (userTicks.length) {
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// ticks could be 1D or 2D array of [val, val, ,,,] or [[val, label], [val, label], ...] or mixed
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for (i=0; i<userTicks.length; i++){
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var ut = userTicks[i];
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var t = new this.tickRenderer(this.tickOptions);
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if (ut.constructor == Array) {
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t.value = ut[0];
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t.label = ut[1];
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if (!this.showTicks) {
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t.showLabel = false;
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t.showMark = false;
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}
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else if (!this.showTickMarks) {
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t.showMark = false;
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}
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t.setTick(ut[0], this.name);
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this._ticks.push(t);
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}
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else {
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t.value = ut;
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if (!this.showTicks) {
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t.showLabel = false;
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t.showMark = false;
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}
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else if (!this.showTickMarks) {
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t.showMark = false;
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}
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t.setTick(ut, this.name);
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this._ticks.push(t);
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}
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}
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this.numberTicks = userTicks.length;
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this.min = this._ticks[0].value;
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this.max = this._ticks[this.numberTicks-1].value;
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this.tickInterval = (this.max - this.min) / (this.numberTicks - 1);
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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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min = (this.min != null) ? this.min : db.min;
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max = (this.max != null) ? this.max : db.max;
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// if min and max are same, space them out a bit.+
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if (min == max) {
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var adj = 0.05;
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if (min > 0) {
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adj = Math.max(Math.log(min)/Math.LN10, 0.05);
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}
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min -= adj;
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max += adj;
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}
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var range = max - min;
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var rmin, rmax;
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var temp, prev, curr;
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var ynumticks = [3,5,6,11,21];
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// yaxis divide ticks in nice intervals from 0 to 1.
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if (this.name == 'yaxis' || this.name == 'y2axis') {
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this.min = 0;
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this.max = 100;
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// user didn't specify number of ticks.
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if (!this.numberTicks){
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if (this.tickInterval) {
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this.numberTicks = 3 + Math.ceil(range / this.tickInterval);
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}
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else {
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temp = 2 + Math.ceil((dim-(this.tickSpacing-1))/this.tickSpacing);
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for (i=0; i<ynumticks.length; i++) {
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curr = temp/ynumticks[i];
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if (curr == 1) {
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this.numberTicks = ynumticks[i];
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break;
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}
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else if (curr > 1) {
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prev = curr;
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continue;
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}
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else if (curr < 1) {
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// was prev or is curr closer to one?
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if (Math.abs(prev - 1) < Math.abs(curr - 1)) {
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this.numberTicks = ynumticks[i-1];
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break;
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}
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else {
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this.numberTicks = ynumticks[i];
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break;
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}
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}
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else if (i == ynumticks.length -1) {
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this.numberTicks = ynumticks[i];
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}
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}
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this.tickInterval = range / (this.numberTicks - 1);
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}
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}
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// user did specify number of ticks.
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else {
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this.tickInterval = range / (this.numberTicks - 1);
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}
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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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t = new this.tickRenderer(this.tickOptions);
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// var t = new $.jqplot.AxisTickRenderer(this.tickOptions);
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if (!this.showTicks) {
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t.showLabel = false;
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t.showMark = false;
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}
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else if (!this.showTickMarks) {
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t.showMark = 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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// for x axes, have number ot ticks equal to number of series and ticks placed
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// at sum of y values for each series.
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else if (this.tickMode == 'bar') {
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this.min = 0;
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this.numberTicks = this._series.length + 1;
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t = new this.tickRenderer(this.tickOptions);
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if (!this.showTicks) {
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t.showLabel = false;
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t.showMark = false;
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}
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else if (!this.showTickMarks) {
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t.showMark = false;
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}
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t.setTick(0, this.name);
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this._ticks.push(t);
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temp = 0;
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for (i=1; i<this.numberTicks; i++){
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temp += this._series[i-1]._sumy;
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t = new this.tickRenderer(this.tickOptions);
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if (!this.showTicks) {
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t.showLabel = false;
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t.showMark = false;
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}
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else if (!this.showTickMarks) {
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t.showMark = false;
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}
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t.setTick(temp, this.name);
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this._ticks.push(t);
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}
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this.max = this.max || temp;
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// if user specified a max and it is greater than sum, add a tick
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if (this.max > temp) {
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t = new this.tickRenderer(this.tickOptions);
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if (!this.showTicks) {
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t.showLabel = false;
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t.showMark = false;
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}
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else if (!this.showTickMarks) {
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t.showMark = false;
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}
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t.setTick(this.max, this.name);
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this._ticks.push(t);
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}
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}
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else if (this.tickMode == 'even') {
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this.min = 0;
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this.max = this.max || db.max;
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// get a desired number of ticks
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var nt = 2 + Math.ceil((dim-(this.tickSpacing-1))/this.tickSpacing);
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range = this.max - this.min;
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this.numberTicks = nt;
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this.tickInterval = range / (this.numberTicks - 1);
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for (i=0; i<this.numberTicks; i++){
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tt = this.min + i * this.tickInterval;
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t = new this.tickRenderer(this.tickOptions);
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// var t = new $.jqplot.AxisTickRenderer(this.tickOptions);
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if (!this.showTicks) {
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t.showLabel = false;
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t.showMark = false;
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}
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else if (!this.showTickMarks) {
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t.showMark = false;
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}
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t.setTick(tt, this.name);
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this._ticks.push(t);
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}
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}
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}
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};
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// called with scope of axis
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$.jqplot.MekkoAxisRenderer.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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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 (var 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;
|
|
}
|
|
// position at start
|
|
else {
|
|
shim = -t._textRenderer.height * Math.sin(t._textRenderer.angle) / 2;
|
|
}
|
|
break;
|
|
case 'end':
|
|
shim = -t.getWidth() + t._textRenderer.height * Math.sin(-t._textRenderer.angle) / 2;
|
|
break;
|
|
case 'start':
|
|
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 w;
|
|
if (lshow) {
|
|
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');
|
|
}
|
|
else {
|
|
this._label._elem.css('top', '0px');
|
|
}
|
|
this._label.pack();
|
|
}
|
|
// now show the labels under the bars.
|
|
var b, l, r;
|
|
for (var i=0; i<this.barLabels.length; i++) {
|
|
b = this._barLabels[i];
|
|
if (b.show) {
|
|
w = b.getWidth();
|
|
l = this._ticks[i].getLeft() + this._ticks[i].getWidth();
|
|
r = this._ticks[i+1].getLeft();
|
|
b._elem.css('left', (r+l-w)/2+'px');
|
|
b._elem.css('top', this._ticks[i]._elem.css('top'));
|
|
b.pack();
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
for (var 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':
|
|
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();
|
|
}
|
|
}
|
|
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');
|
|
}
|
|
else {
|
|
this._label._elem.css('right', '0px');
|
|
}
|
|
this._label.pack();
|
|
}
|
|
}
|
|
}
|
|
};
|
|
})(jQuery);
|