514 lines
21 KiB
JavaScript
514 lines
21 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: 1.0.4
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* Revision: 1121
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*
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* Copyright (c) 2009-2012 Chris Leonello
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* jqPlot is currently available for use in all personal or commercial projects
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* under both the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL
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* version 2.0 (http://www.gnu.org/licenses/gpl-2.0.html) licenses. This means that you can
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* choose the license that best suits your project and use it accordingly.
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*
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* Although not required, the author would appreciate an email letting him
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* know of any substantial use of jqPlot. You can reach the author at:
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* chris at jqplot dot com or see http://www.jqplot.com/info.php .
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*
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* If you are feeling kind and generous, consider supporting the project by
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* making a donation at: http://www.jqplot.com/donate.php .
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*
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* sprintf functions contained in jqplot.sprintf.js by Ash Searle:
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*
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* version 2007.04.27
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* author Ash Searle
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* http://hexmen.com/blog/2007/03/printf-sprintf/
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* http://hexmen.com/js/sprintf.js
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* The author (Ash Searle) has placed this code in the public domain:
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* "This code is unrestricted: you are free to use it however you like."
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*
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*/
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(function($) {
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// Need to ensure pyramid axis and grid renderers are loaded.
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// You should load these with script tags in the html head, that is more efficient
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// as the browser will cache the request.
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// Note, have to block with synchronous request in order to execute bar renderer code.
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if ($.jqplot.PyramidAxisRenderer === undefined) {
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$.ajax({
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url: $.jqplot.pluginLocation + 'jqplot.pyramidAxisRenderer.js',
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dataType: "script",
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async: false
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});
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}
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if ($.jqplot.PyramidGridRenderer === undefined) {
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$.ajax({
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url: $.jqplot.pluginLocation + 'jqplot.pyramidGridRenderer.js',
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dataType: "script",
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async: false
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});
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}
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$.jqplot.PyramidRenderer = function(){
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$.jqplot.LineRenderer.call(this);
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};
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$.jqplot.PyramidRenderer.prototype = new $.jqplot.LineRenderer();
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$.jqplot.PyramidRenderer.prototype.constructor = $.jqplot.PyramidRenderer;
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// called with scope of a series
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$.jqplot.PyramidRenderer.prototype.init = function(options, plot) {
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options = options || {};
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this._type = 'pyramid';
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// Group: Properties
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//
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// prop: barPadding
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this.barPadding = 10;
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this.barWidth = null;
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// prop: fill
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// True to fill the bars.
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this.fill = true;
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// prop: highlightMouseOver
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// True to highlight slice when moused over.
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// This must be false to enable highlightMouseDown to highlight when clicking on a slice.
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this.highlightMouseOver = true;
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// prop: highlightMouseDown
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// True to highlight when a mouse button is pressed over a slice.
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// This will be disabled if highlightMouseOver is true.
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this.highlightMouseDown = false;
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// prop: highlightColors
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// an array of colors to use when highlighting a slice.
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this.highlightColors = [];
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// prop highlightThreshold
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// Expand the highlightable region in the x direction.
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// E.g. a value of 3 will highlight a bar when the mouse is
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// within 3 pixels of the bar in the x direction.
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this.highlightThreshold = 2;
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// prop: synchronizeHighlight
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// Index of another series to highlight when this series is highlighted.
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// null or false to not synchronize.
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this.synchronizeHighlight = false;
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// prop: offsetBars
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// False will center bars on their y value.
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// True will push bars up by 1/2 bar width to fill between their y values.
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// If true, there needs to be 1 more tick than there are bars.
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this.offsetBars = false;
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// if user has passed in highlightMouseDown option and not set highlightMouseOver, disable highlightMouseOver
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if (options.highlightMouseDown && options.highlightMouseOver == null) {
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options.highlightMouseOver = false;
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}
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this.side = 'right';
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$.extend(true, this, options);
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// if (this.fill === false) {
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// this.shadow = false;
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// }
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if (this.side === 'left') {
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this._highlightThreshold = [[-this.highlightThreshold, 0], [-this.highlightThreshold, 0], [0,0], [0,0]];
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}
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else {
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this._highlightThreshold = [[0,0], [0,0], [this.highlightThreshold, 0], [this.highlightThreshold, 0]];
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}
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this.renderer.options = options;
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// index of the currenty highlighted point, if any
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this._highlightedPoint = null;
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// Array of actual data colors used for each data point.
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this._dataColors = [];
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this._barPoints = [];
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this.fillAxis = 'y';
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this._primaryAxis = '_yaxis';
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this._xnudge = 0;
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// set the shape renderer options
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var opts = {lineJoin:'miter', lineCap:'butt', fill:this.fill, fillRect:this.fill, isarc:false, strokeStyle:this.color, fillStyle:this.color, closePath:this.fill, lineWidth: this.lineWidth};
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this.renderer.shapeRenderer.init(opts);
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// set the shadow renderer options
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var shadow_offset = options.shadowOffset;
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// set the shadow renderer options
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if (shadow_offset == null) {
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// scale the shadowOffset to the width of the line.
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if (this.lineWidth > 2.5) {
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shadow_offset = 1.25 * (1 + (Math.atan((this.lineWidth/2.5))/0.785398163 - 1)*0.6);
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// var shadow_offset = this.shadowOffset;
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}
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// for skinny lines, don't make such a big shadow.
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else {
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shadow_offset = 1.25 * Math.atan((this.lineWidth/2.5))/0.785398163;
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}
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}
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var sopts = {lineJoin:'miter', lineCap:'butt', fill:this.fill, fillRect:this.fill, isarc:false, angle:this.shadowAngle, offset:shadow_offset, alpha:this.shadowAlpha, depth:this.shadowDepth, closePath:this.fill, lineWidth: this.lineWidth};
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this.renderer.shadowRenderer.init(sopts);
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plot.postDrawHooks.addOnce(postPlotDraw);
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plot.eventListenerHooks.addOnce('jqplotMouseMove', handleMove);
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// if this is the left side of pyramid, set y values to negative.
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if (this.side === 'left') {
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for (var i=0, l=this.data.length; i<l; i++) {
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this.data[i][1] = -Math.abs(this.data[i][1]);
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}
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}
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};
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// setGridData
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// converts the user data values to grid coordinates and stores them
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// in the gridData array.
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// Called with scope of a series.
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$.jqplot.PyramidRenderer.prototype.setGridData = function(plot) {
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// recalculate the grid data
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var xp = this._xaxis.series_u2p;
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var yp = this._yaxis.series_u2p;
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var data = this._plotData;
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var pdata = this._prevPlotData;
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this.gridData = [];
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this._prevGridData = [];
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var l = data.length;
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var adjust = false;
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var i;
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// if any data values are < 0, consider this a negative series
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for (i = 0; i < l; i++) {
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if (data[i][1] < 0) {
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this.side = 'left';
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}
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}
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if (this._yaxis.name === 'yMidAxis' && this.side === 'right') {
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this._xnudge = this._xaxis.max/2000.0;
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adjust = true;
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}
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for (i = 0; i < l; i++) {
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// if not a line series or if no nulls in data, push the converted point onto the array.
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if (data[i][0] != null && data[i][1] != null) {
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this.gridData.push([xp(data[i][1]), yp(data[i][0])]);
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}
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// else if there is a null, preserve it.
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else if (data[i][0] == null) {
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this.gridData.push([xp(data[i][1]), null]);
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}
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else if (data[i][1] == null) {
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this.gridData.push(null, [yp(data[i][0])]);
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}
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// finally, adjust x grid data if have to
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if (data[i][1] === 0 && adjust) {
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this.gridData[i][0] = xp(this._xnudge);
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}
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}
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};
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// makeGridData
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// converts any arbitrary data values to grid coordinates and
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// returns them. This method exists so that plugins can use a series'
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// linerenderer to generate grid data points without overwriting the
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// grid data associated with that series.
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// Called with scope of a series.
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$.jqplot.PyramidRenderer.prototype.makeGridData = function(data, plot) {
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// recalculate the grid data
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var xp = this._xaxis.series_u2p;
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var yp = this._yaxis.series_u2p;
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var gd = [];
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var l = data.length;
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var adjust = false;
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var i;
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// if any data values are < 0, consider this a negative series
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for (i = 0; i < l; i++) {
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if (data[i][1] < 0) {
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this.side = 'left';
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}
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}
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if (this._yaxis.name === 'yMidAxis' && this.side === 'right') {
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this._xnudge = this._xaxis.max/2000.0;
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adjust = true;
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}
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for (i = 0; i < l; i++) {
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// if not a line series or if no nulls in data, push the converted point onto the array.
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if (data[i][0] != null && data[i][1] != null) {
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gd.push([xp(data[i][1]), yp(data[i][0])]);
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}
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// else if there is a null, preserve it.
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else if (data[i][0] == null) {
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gd.push([xp(data[i][1]), null]);
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}
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else if (data[i][1] == null) {
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gd.push([null, yp(data[i][0])]);
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}
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// finally, adjust x grid data if have to
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if (data[i][1] === 0 && adjust) {
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gd[i][0] = xp(this._xnudge);
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}
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}
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return gd;
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};
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$.jqplot.PyramidRenderer.prototype.setBarWidth = function() {
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// need to know how many data values we have on the approprate axis and figure it out.
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var i;
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var nvals = 0;
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var nseries = 0;
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var paxis = this[this._primaryAxis];
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var s, series, pos;
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nvals = paxis.max - paxis.min;
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var nticks = paxis.numberTicks;
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var nbins = (nticks-1)/2;
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// so, now we have total number of axis values.
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var temp = (this.barPadding === 0) ? 1.0 : 0;
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if (paxis.name == 'xaxis' || paxis.name == 'x2axis') {
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this.barWidth = (paxis._offsets.max - paxis._offsets.min) / nvals - this.barPadding + temp;
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}
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else {
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if (this.fill) {
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this.barWidth = (paxis._offsets.min - paxis._offsets.max) / nvals - this.barPadding + temp;
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}
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else {
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this.barWidth = (paxis._offsets.min - paxis._offsets.max) / nvals;
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}
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}
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};
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$.jqplot.PyramidRenderer.prototype.draw = function(ctx, gridData, options) {
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var i;
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// Ughhh, have to make a copy of options b/c it may be modified later.
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var opts = $.extend({}, options);
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var shadow = (opts.shadow != undefined) ? opts.shadow : this.shadow;
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var showLine = (opts.showLine != undefined) ? opts.showLine : this.showLine;
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var fill = (opts.fill != undefined) ? opts.fill : this.fill;
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var xp = this._xaxis.series_u2p;
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var yp = this._yaxis.series_u2p;
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var pointx, pointy;
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// clear out data colors.
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this._dataColors = [];
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this._barPoints = [];
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if (this.renderer.options.barWidth == null) {
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this.renderer.setBarWidth.call(this);
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}
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// var temp = this._plotSeriesInfo = this.renderer.calcSeriesNumbers.call(this);
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// var nvals = temp[0];
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// var nseries = temp[1];
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// var pos = temp[2];
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var points = [],
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w,
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h;
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// this._barNudge = 0;
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if (showLine) {
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var negativeColors = new $.jqplot.ColorGenerator(this.negativeSeriesColors);
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var positiveColors = new $.jqplot.ColorGenerator(this.seriesColors);
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var negativeColor = negativeColors.get(this.index);
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if (! this.useNegativeColors) {
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negativeColor = opts.fillStyle;
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}
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var positiveColor = opts.fillStyle;
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var base;
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var xstart = this._xaxis.series_u2p(this._xnudge);
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var ystart = this._yaxis.series_u2p(this._yaxis.min);
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var yend = this._yaxis.series_u2p(this._yaxis.max);
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var bw = this.barWidth;
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var bw2 = bw/2.0;
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var points = [];
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var yadj = this.offsetBars ? bw2 : 0;
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for (var i=0, l=gridData.length; i<l; i++) {
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if (this.data[i][0] == null) {
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continue;
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}
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base = gridData[i][1];
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// not stacked and first series in stack
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if (this._plotData[i][1] < 0) {
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if (this.varyBarColor && !this._stack) {
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if (this.useNegativeColors) {
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opts.fillStyle = negativeColors.next();
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}
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else {
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opts.fillStyle = positiveColors.next();
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}
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}
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}
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else {
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if (this.varyBarColor && !this._stack) {
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opts.fillStyle = positiveColors.next();
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}
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else {
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opts.fillStyle = positiveColor;
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}
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}
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if (this.fill) {
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if (this._plotData[i][1] >= 0) {
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// xstart = this._xaxis.series_u2p(this._xnudge);
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w = gridData[i][0] - xstart;
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h = this.barWidth;
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points = [xstart, base - bw2 - yadj, w, h];
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}
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else {
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// xstart = this._xaxis.series_u2p(0);
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w = xstart - gridData[i][0];
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h = this.barWidth;
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points = [gridData[i][0], base - bw2 - yadj, w, h];
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}
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this._barPoints.push([[points[0], points[1] + h], [points[0], points[1]], [points[0] + w, points[1]], [points[0] + w, points[1] + h]]);
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if (shadow) {
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this.renderer.shadowRenderer.draw(ctx, points);
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}
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var clr = opts.fillStyle || this.color;
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this._dataColors.push(clr);
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this.renderer.shapeRenderer.draw(ctx, points, opts);
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}
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else {
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if (i === 0) {
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points =[[xstart, ystart], [gridData[i][0], ystart], [gridData[i][0], gridData[i][1] - bw2 - yadj]];
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}
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else if (i < l-1) {
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points = points.concat([[gridData[i-1][0], gridData[i-1][1] - bw2 - yadj], [gridData[i][0], gridData[i][1] + bw2 - yadj], [gridData[i][0], gridData[i][1] - bw2 - yadj]]);
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}
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// finally, draw the line
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else {
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points = points.concat([[gridData[i-1][0], gridData[i-1][1] - bw2 - yadj], [gridData[i][0], gridData[i][1] + bw2 - yadj], [gridData[i][0], yend], [xstart, yend]]);
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if (shadow) {
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this.renderer.shadowRenderer.draw(ctx, points);
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}
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var clr = opts.fillStyle || this.color;
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this._dataColors.push(clr);
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this.renderer.shapeRenderer.draw(ctx, points, opts);
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}
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}
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}
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}
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if (this.highlightColors.length == 0) {
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this.highlightColors = $.jqplot.computeHighlightColors(this._dataColors);
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}
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else if (typeof(this.highlightColors) == 'string') {
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this.highlightColors = [];
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for (var i=0; i<this._dataColors.length; i++) {
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this.highlightColors.push(this.highlightColors);
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}
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}
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};
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// setup default renderers for axes and legend so user doesn't have to
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// called with scope of plot
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function preInit(target, data, options) {
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options = options || {};
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options.axesDefaults = options.axesDefaults || {};
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options.grid = options.grid || {};
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options.legend = options.legend || {};
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options.seriesDefaults = options.seriesDefaults || {};
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// only set these if there is a pie series
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var setopts = false;
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if (options.seriesDefaults.renderer === $.jqplot.PyramidRenderer) {
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setopts = true;
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}
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else if (options.series) {
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for (var i=0; i < options.series.length; i++) {
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if (options.series[i].renderer === $.jqplot.PyramidRenderer) {
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setopts = true;
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}
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}
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}
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if (setopts) {
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options.axesDefaults.renderer = $.jqplot.PyramidAxisRenderer;
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options.grid.renderer = $.jqplot.PyramidGridRenderer;
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options.seriesDefaults.pointLabels = {show: false};
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}
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}
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// called within context of plot
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// create a canvas which we can draw on.
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// insert it before the eventCanvas, so eventCanvas will still capture events.
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function postPlotDraw() {
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// Memory Leaks patch
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if (this.plugins.pyramidRenderer && this.plugins.pyramidRenderer.highlightCanvas) {
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this.plugins.pyramidRenderer.highlightCanvas.resetCanvas();
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this.plugins.pyramidRenderer.highlightCanvas = null;
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}
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this.plugins.pyramidRenderer = {highlightedSeriesIndex:null};
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this.plugins.pyramidRenderer.highlightCanvas = new $.jqplot.GenericCanvas();
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this.eventCanvas._elem.before(this.plugins.pyramidRenderer.highlightCanvas.createElement(this._gridPadding, 'jqplot-pyramidRenderer-highlight-canvas', this._plotDimensions, this));
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this.plugins.pyramidRenderer.highlightCanvas.setContext();
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this.eventCanvas._elem.bind('mouseleave', {plot:this}, function (ev) { unhighlight(ev.data.plot); });
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}
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function highlight (plot, sidx, pidx, points) {
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var s = plot.series[sidx];
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var canvas = plot.plugins.pyramidRenderer.highlightCanvas;
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canvas._ctx.clearRect(0,0,canvas._ctx.canvas.width, canvas._ctx.canvas.height);
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s._highlightedPoint = pidx;
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plot.plugins.pyramidRenderer.highlightedSeriesIndex = sidx;
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var opts = {fillStyle: s.highlightColors[pidx], fillRect: false};
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s.renderer.shapeRenderer.draw(canvas._ctx, points, opts);
|
|
if (s.synchronizeHighlight !== false && plot.series.length >= s.synchronizeHighlight && s.synchronizeHighlight !== sidx) {
|
|
s = plot.series[s.synchronizeHighlight];
|
|
opts = {fillStyle: s.highlightColors[pidx], fillRect: false};
|
|
s.renderer.shapeRenderer.draw(canvas._ctx, s._barPoints[pidx], opts);
|
|
}
|
|
canvas = null;
|
|
}
|
|
|
|
function unhighlight (plot) {
|
|
var canvas = plot.plugins.pyramidRenderer.highlightCanvas;
|
|
canvas._ctx.clearRect(0,0, canvas._ctx.canvas.width, canvas._ctx.canvas.height);
|
|
for (var i=0; i<plot.series.length; i++) {
|
|
plot.series[i]._highlightedPoint = null;
|
|
}
|
|
plot.plugins.pyramidRenderer.highlightedSeriesIndex = null;
|
|
plot.target.trigger('jqplotDataUnhighlight');
|
|
canvas = null;
|
|
}
|
|
|
|
|
|
function handleMove(ev, gridpos, datapos, neighbor, plot) {
|
|
if (neighbor) {
|
|
var ins = [neighbor.seriesIndex, neighbor.pointIndex, neighbor.data];
|
|
var evt1 = jQuery.Event('jqplotDataMouseOver');
|
|
evt1.pageX = ev.pageX;
|
|
evt1.pageY = ev.pageY;
|
|
plot.target.trigger(evt1, ins);
|
|
if (plot.series[ins[0]].highlightMouseOver && !(ins[0] == plot.plugins.pyramidRenderer.highlightedSeriesIndex && ins[1] == plot.series[ins[0]]._highlightedPoint)) {
|
|
var evt = jQuery.Event('jqplotDataHighlight');
|
|
evt.which = ev.which;
|
|
evt.pageX = ev.pageX;
|
|
evt.pageY = ev.pageY;
|
|
plot.target.trigger(evt, ins);
|
|
highlight (plot, neighbor.seriesIndex, neighbor.pointIndex, neighbor.points);
|
|
}
|
|
}
|
|
else if (neighbor == null) {
|
|
unhighlight (plot);
|
|
}
|
|
}
|
|
|
|
// Have to add hook here, becuase it needs called before series is inited.
|
|
$.jqplot.preInitHooks.push(preInit);
|
|
|
|
|
|
})(jQuery); |