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-/**
- * jqPlot
- * Pure JavaScript plotting plugin using jQuery
- *
- * Version: 1.0.4
- * Revision: 1121
- *
- * Copyright (c) 2009-2012 Chris Leonello
- * jqPlot is currently available for use in all personal or commercial projects
- * under both the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL
- * version 2.0 (http://www.gnu.org/licenses/gpl-2.0.html) licenses. This means that you can
- * choose the license that best suits your project and use it accordingly.
- *
- * Although not required, the author would appreciate an email letting him
- * know of any substantial use of jqPlot. You can reach the author at:
- * chris at jqplot dot com or see http://www.jqplot.com/info.php .
- *
- * If you are feeling kind and generous, consider supporting the project by
- * making a donation at: http://www.jqplot.com/donate.php .
- *
- * sprintf functions contained in jqplot.sprintf.js by Ash Searle:
- *
- * version 2007.04.27
- * author Ash Searle
- * http://hexmen.com/blog/2007/03/printf-sprintf/
- * http://hexmen.com/js/sprintf.js
- * The author (Ash Searle) has placed this code in the public domain:
- * "This code is unrestricted: you are free to use it however you like."
- *
- */
-(function($) {
- /**
- * Class: $.jqplot.OHLCRenderer
- * jqPlot Plugin to draw Open Hi Low Close, Candlestick and Hi Low Close charts.
- *
- * To use this plugin, include the renderer js file in
- * your source:
- *
- * > <script type="text/javascript" src="plugins/jqplot.ohlcRenderer.js"></script>
- *
- * You will most likely want to use a date axis renderer
- * for the x axis also, so include the date axis render js file also:
- *
- * > <script type="text/javascript" src="plugins/jqplot.dateAxisRenderer.js"></script>
- *
- * Then you set the renderer in the series options on your plot:
- *
- * > series: [{renderer:$.jqplot.OHLCRenderer}]
- *
- * For OHLC and candlestick charts, data should be specified
- * like so:
- *
- * > dat = [['07/06/2009',138.7,139.68,135.18,135.4], ['06/29/2009',143.46,144.66,139.79,140.02], ...]
- *
- * If the data array has only 4 values per point instead of 5,
- * the renderer will create a Hi Low Close chart instead. In that case,
- * data should be supplied like:
- *
- * > dat = [['07/06/2009',139.68,135.18,135.4], ['06/29/2009',144.66,139.79,140.02], ...]
- *
- * To generate a candlestick chart instead of an OHLC chart,
- * set the "candlestick" option to true:
- *
- * > series: [{renderer:$.jqplot.OHLCRenderer, rendererOptions:{candleStick:true}}],
- *
- */
- $.jqplot.OHLCRenderer = function(){
- // subclass line renderer to make use of some of it's methods.
- $.jqplot.LineRenderer.call(this);
- // prop: candleStick
- // true to render chart as candleStick.
- // Must have an open price, cannot be a hlc chart.
- this.candleStick = false;
- // prop: tickLength
- // length of the line in pixels indicating open and close price.
- // Default will auto calculate based on plot width and
- // number of points displayed.
- this.tickLength = 'auto';
- // prop: bodyWidth
- // width of the candlestick body in pixels. Default will auto calculate
- // based on plot width and number of candlesticks displayed.
- this.bodyWidth = 'auto';
- // prop: openColor
- // color of the open price tick mark. Default is series color.
- this.openColor = null;
- // prop: closeColor
- // color of the close price tick mark. Default is series color.
- this.closeColor = null;
- // prop: wickColor
- // color of the hi-lo line thorugh the candlestick body.
- // Default is the series color.
- this.wickColor = null;
- // prop: fillUpBody
- // true to render an "up" day (close price greater than open price)
- // with a filled candlestick body.
- this.fillUpBody = false;
- // prop: fillDownBody
- // true to render a "down" day (close price lower than open price)
- // with a filled candlestick body.
- this.fillDownBody = true;
- // prop: upBodyColor
- // Color of candlestick body of an "up" day. Default is series color.
- this.upBodyColor = null;
- // prop: downBodyColor
- // Color of candlestick body on a "down" day. Default is series color.
- this.downBodyColor = null;
- // prop: hlc
- // true if is a hi-low-close chart (no open price).
- // This is determined automatically from the series data.
- this.hlc = false;
- // prop: lineWidth
- // Width of the hi-low line and open/close ticks.
- // Must be set in the rendererOptions for the series.
- this.lineWidth = 1.5;
- this._tickLength;
- this._bodyWidth;
- };
-
- $.jqplot.OHLCRenderer.prototype = new $.jqplot.LineRenderer();
- $.jqplot.OHLCRenderer.prototype.constructor = $.jqplot.OHLCRenderer;
-
- // called with scope of series.
- $.jqplot.OHLCRenderer.prototype.init = function(options) {
- options = options || {};
- // lineWidth has to be set on the series, changes in renderer
- // constructor have no effect. set the default here
- // if no renderer option for lineWidth is specified.
- this.lineWidth = options.lineWidth || 1.5;
- $.jqplot.LineRenderer.prototype.init.call(this, options);
- this._type = 'ohlc';
- // set the yaxis data bounds here to account for hi and low values
- var db = this._yaxis._dataBounds;
- var d = this._plotData;
- // if data points have less than 5 values, force a hlc chart.
- if (d[0].length < 5) {
- this.renderer.hlc = true;
-
- for (var j=0; j<d.length; j++) {
- if (d[j][2] < db.min || db.min == null) {
- db.min = d[j][2];
- }
- if (d[j][1] > db.max || db.max == null) {
- db.max = d[j][1];
- }
- }
- }
- else {
- for (var j=0; j<d.length; j++) {
- if (d[j][3] < db.min || db.min == null) {
- db.min = d[j][3];
- }
- if (d[j][2] > db.max || db.max == null) {
- db.max = d[j][2];
- }
- }
- }
-
- };
-
- // called within scope of series.
- $.jqplot.OHLCRenderer.prototype.draw = function(ctx, gd, options) {
- var d = this.data;
- var xmin = this._xaxis.min;
- var xmax = this._xaxis.max;
- // index of last value below range of plot.
- var xminidx = 0;
- // index of first value above range of plot.
- var xmaxidx = d.length;
- var xp = this._xaxis.series_u2p;
- var yp = this._yaxis.series_u2p;
- var i, prevColor, ops, b, h, w, a, points;
- var o;
- var r = this.renderer;
- var opts = (options != undefined) ? options : {};
- var shadow = (opts.shadow != undefined) ? opts.shadow : this.shadow;
- var fill = (opts.fill != undefined) ? opts.fill : this.fill;
- var fillAndStroke = (opts.fillAndStroke != undefined) ? opts.fillAndStroke : this.fillAndStroke;
- r.bodyWidth = (opts.bodyWidth != undefined) ? opts.bodyWidth : r.bodyWidth;
- r.tickLength = (opts.tickLength != undefined) ? opts.tickLength : r.tickLength;
- ctx.save();
- if (this.show) {
- var x, open, hi, low, close;
- // need to get widths based on number of points shown,
- // not on total number of points. Use the results
- // to speed up drawing in next step.
- for (var i=0; i<d.length; i++) {
- if (d[i][0] < xmin) {
- xminidx = i;
- }
- else if (d[i][0] < xmax) {
- xmaxidx = i+1;
- }
- }
-
- var dwidth = this.gridData[xmaxidx-1][0] - this.gridData[xminidx][0];
- var nvisiblePoints = xmaxidx - xminidx;
- try {
- var dinterval = Math.abs(this._xaxis.series_u2p(parseInt(this._xaxis._intervalStats[0].sortedIntervals[0].interval, 10)) - this._xaxis.series_u2p(0));
- }
-
- catch (e) {
- var dinterval = dwidth / nvisiblePoints;
- }
-
- if (r.candleStick) {
- if (typeof(r.bodyWidth) == 'number') {
- r._bodyWidth = r.bodyWidth;
- }
- else {
- r._bodyWidth = Math.min(20, dinterval/1.65);
- }
- }
- else {
- if (typeof(r.tickLength) == 'number') {
- r._tickLength = r.tickLength;
- }
- else {
- r._tickLength = Math.min(10, dinterval/3.5);
- }
- }
-
- for (var i=xminidx; i<xmaxidx; i++) {
- x = xp(d[i][0]);
- if (r.hlc) {
- open = null;
- hi = yp(d[i][1]);
- low = yp(d[i][2]);
- close = yp(d[i][3]);
- }
- else {
- open = yp(d[i][1]);
- hi = yp(d[i][2]);
- low = yp(d[i][3]);
- close = yp(d[i][4]);
- }
- o = {};
- if (r.candleStick && !r.hlc) {
- w = r._bodyWidth;
- a = x - w/2;
- // draw candle
- // determine if candle up or down
- // up, remember grid coordinates increase downward
- if (close < open) {
- // draw wick
- if (r.wickColor) {
- o.color = r.wickColor;
- }
- else if (r.downBodyColor) {
- o.color = r.upBodyColor;
- }
- ops = $.extend(true, {}, opts, o);
- r.shapeRenderer.draw(ctx, [[x, hi], [x, close]], ops);
- r.shapeRenderer.draw(ctx, [[x, open], [x, low]], ops);
- o = {};
- b = close;
- h = open - close;
- // if color specified, use it
- if (r.fillUpBody) {
- o.fillRect = true;
- }
- else {
- o.strokeRect = true;
- w = w - this.lineWidth;
- a = x - w/2;
- }
- if (r.upBodyColor) {
- o.color = r.upBodyColor;
- o.fillStyle = r.upBodyColor;
- }
- points = [a, b, w, h];
- }
- // down
- else if (close > open) {
- // draw wick
- if (r.wickColor) {
- o.color = r.wickColor;
- }
- else if (r.downBodyColor) {
- o.color = r.downBodyColor;
- }
- ops = $.extend(true, {}, opts, o);
- r.shapeRenderer.draw(ctx, [[x, hi], [x, open]], ops);
- r.shapeRenderer.draw(ctx, [[x, close], [x, low]], ops);
-
- o = {};
-
- b = open;
- h = close - open;
- // if color specified, use it
- if (r.fillDownBody) {
- o.fillRect = true;
- }
- else {
- o.strokeRect = true;
- w = w - this.lineWidth;
- a = x - w/2;
- }
- if (r.downBodyColor) {
- o.color = r.downBodyColor;
- o.fillStyle = r.downBodyColor;
- }
- points = [a, b, w, h];
- }
- // even, open = close
- else {
- // draw wick
- if (r.wickColor) {
- o.color = r.wickColor;
- }
- ops = $.extend(true, {}, opts, o);
- r.shapeRenderer.draw(ctx, [[x, hi], [x, low]], ops);
- o = {};
- o.fillRect = false;
- o.strokeRect = false;
- a = [x - w/2, open];
- b = [x + w/2, close];
- w = null;
- h = null;
- points = [a, b];
- }
- ops = $.extend(true, {}, opts, o);
- r.shapeRenderer.draw(ctx, points, ops);
- }
- else {
- prevColor = opts.color;
- if (r.openColor) {
- opts.color = r.openColor;
- }
- // draw open tick
- if (!r.hlc) {
- r.shapeRenderer.draw(ctx, [[x-r._tickLength, open], [x, open]], opts);
- }
- opts.color = prevColor;
- // draw wick
- if (r.wickColor) {
- opts.color = r.wickColor;
- }
- r.shapeRenderer.draw(ctx, [[x, hi], [x, low]], opts);
- opts.color = prevColor;
- // draw close tick
- if (r.closeColor) {
- opts.color = r.closeColor;
- }
- r.shapeRenderer.draw(ctx, [[x, close], [x+r._tickLength, close]], opts);
- opts.color = prevColor;
- }
- }
- }
-
- ctx.restore();
- };
-
- $.jqplot.OHLCRenderer.prototype.drawShadow = function(ctx, gd, options) {
- // This is a no-op, shadows drawn with lines.
- };
-
- // called with scope of plot.
- $.jqplot.OHLCRenderer.checkOptions = function(target, data, options) {
- // provide some sensible highlighter options by default
- // These aren't good for hlc, only for ohlc or candlestick
- if (!options.highlighter) {
- options.highlighter = {
- showMarker:false,
- tooltipAxes: 'y',
- yvalues: 4,
- formatString:'<table class="jqplot-highlighter"><tr><td>date:</td><td>%s</td></tr><tr><td>open:</td><td>%s</td></tr><tr><td>hi:</td><td>%s</td></tr><tr><td>low:</td><td>%s</td></tr><tr><td>close:</td><td>%s</td></tr></table>'
- };
- }
- };
-
- //$.jqplot.preInitHooks.push($.jqplot.OHLCRenderer.checkOptions);
-
-})(jQuery); \ No newline at end of file