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139 lines
3.4 KiB
139 lines
3.4 KiB
/*
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YUI 3.17.2 (build 9c3c78e)
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Copyright 2014 Yahoo! Inc. All rights reserved.
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Licensed under the BSD License.
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http://yuilibrary.com/license/
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*/
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YUI.add('series-range', function (Y, NAME) {
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/**
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* Provides functionality for creating a range series.
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*
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* @module charts
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* @submodule series-range
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*/
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/**
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* An abstract class for creating range series instances.
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* RangeSeries is used by the following classes:
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* <ul>
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* <li>{{#crossLink "CandlestickSeries"}}{{/crossLink}}</li>
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* <li>{{#crossLink "OHLCSeries"}}{{/crossLink}}</li>
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* </ul>
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*
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* @class RangeSeries
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* @extends CartesianSeries
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* @constructor
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* @param {Object} config (optional) Configuration parameters.
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* @submodule series-range
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*/
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function RangeSeries()
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{
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RangeSeries.superclass.constructor.apply(this, arguments);
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}
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RangeSeries.NAME = "rangeSeries";
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RangeSeries.ATTRS = {
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/**
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* Read-only attribute indicating the type of series.
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*
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* @attribute type
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* @type String
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* @default range
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*/
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type: {
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value: "range"
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},
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/**
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* Values to be used for open, high, low and close keys.
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*
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* @attribute ohlc
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* @type Object
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*/
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ohlckeys: {
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valueFn: function() {
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return {
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open: "open",
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high: "high",
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low: "low",
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close: "close"
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};
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}
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}
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};
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Y.extend(RangeSeries, Y.CartesianSeries, {
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/**
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* Returns the width for each marker base on the width of the series
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* and the length of the dataProvider.
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*
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* @method calculateMarkerWidth
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* @param {Number} width The width, in pixels of the series.
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* @param {Number} count The length of the datProvider.
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* @return Number
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* @private
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*/
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_calculateMarkerWidth: function(width, count, spacing)
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{
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var val = 0;
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while(val < 3 && spacing > -1)
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{
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spacing = spacing - 1;
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val = Math.round(width/count - spacing);
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if(val % 2 === 0) {
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val = val - 1;
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}
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}
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return Math.max(1, val);
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},
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/**
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* Draws the series.
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*
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* @method drawSeries
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* @protected
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*/
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drawSeries: function()
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{
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var xcoords = this.get("xcoords"),
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ycoords = this.get("ycoords"),
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styles = this.get("styles"),
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padding = styles.padding,
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len = xcoords.length,
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dataWidth = this.get("width") - (padding.left + padding.right),
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keys = this.get("ohlckeys"),
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opencoords = ycoords[keys.open],
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highcoords = ycoords[keys.high],
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lowcoords = ycoords[keys.low],
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closecoords = ycoords[keys.close],
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width = this._calculateMarkerWidth(dataWidth, len, styles.spacing),
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halfwidth = width/2;
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this._drawMarkers(xcoords, opencoords, highcoords, lowcoords, closecoords, len, width, halfwidth, styles);
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},
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/**
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* Gets the default value for the `styles` attribute. Overrides
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* base implementation.
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*
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* @method _getDefaultStyles
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* @return Object
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* @private
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*/
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_getDefaultStyles: function()
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{
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var styles = {
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spacing: 3
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};
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return this._mergeStyles(styles, RangeSeries.superclass._getDefaultStyles());
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}
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});
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Y.RangeSeries = RangeSeries;
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}, '3.17.2', {"requires": ["series-cartesian"]});
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