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364 lines
11 KiB
364 lines
11 KiB
2 years ago
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/*
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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-stacked', function (Y, NAME) {
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/**
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* Provides functionality for creating stacked series.
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*
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* @module charts
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* @submodule series-stacked
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*/
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var Y_Lang = Y.Lang;
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/**
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* Utility class used for creating stacked series.
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*
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* @module charts
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* @class StackingUtil
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* @constructor
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* @submodule series-stacked
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*/
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function StackingUtil(){}
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StackingUtil.prototype = {
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/**
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* Indicates whether the series is stacked.
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*
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* @property _stacked
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* @private
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*/
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_stacked: true,
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/**
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* @protected
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*
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* Adjusts coordinate values for stacked series.
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*
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* @method _stackCoordinates
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*/
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_stackCoordinates: function()
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{
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if(this.get("direction") === "vertical")
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{
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this._stackXCoords();
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}
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else
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{
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this._stackYCoords();
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}
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},
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/**
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* Stacks coordinates for a stacked vertical series.
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*
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* @method _stackXCoords
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* @protected
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*/
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_stackXCoords: function()
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{
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var order = this.get("order"),
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seriesCollection = this.get("seriesTypeCollection"),
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i = 0,
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xcoords = this.get("xcoords"),
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ycoords = this.get("ycoords"),
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len,
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coord,
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prevCoord,
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prevOrder,
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stackedXCoords = xcoords.concat(),
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prevXCoords,
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prevYCoords,
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nullIndices = [],
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nullIndex;
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if(order > 0)
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{
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prevXCoords = seriesCollection[order - 1].get("stackedXCoords");
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prevYCoords = seriesCollection[order - 1].get("stackedYCoords");
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len = prevXCoords.length;
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}
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else
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{
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len = xcoords.length;
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}
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for(; i < len; i = i + 1)
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{
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if(Y_Lang.isNumber(xcoords[i]))
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{
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if(order > 0)
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{
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prevCoord = prevXCoords[i];
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if(!Y_Lang.isNumber(prevCoord))
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{
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prevOrder = order;
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while(prevOrder > - 1 && !Y_Lang.isNumber(prevCoord))
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{
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prevOrder = prevOrder - 1;
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if(prevOrder > -1)
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{
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prevCoord = seriesCollection[prevOrder].get("stackedXCoords")[i];
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}
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else
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{
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prevCoord = this._leftOrigin;
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}
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}
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}
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xcoords[i] = xcoords[i] + prevCoord;
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}
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stackedXCoords[i] = xcoords[i];
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}
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else
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{
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nullIndices.push(i);
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}
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}
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this._cleanXNaN(stackedXCoords, ycoords);
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len = nullIndices.length;
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if(len > 0)
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{
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for(i = 0; i < len; i = i + 1)
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{
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nullIndex = nullIndices[i];
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coord = order > 0 ? prevXCoords[nullIndex] : this._leftOrigin;
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stackedXCoords[nullIndex] = Math.max(stackedXCoords[nullIndex], coord);
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}
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}
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this.set("stackedXCoords", stackedXCoords);
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this.set("stackedYCoords", ycoords);
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},
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/**
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* Stacks coordinates for a stacked horizontal series.
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*
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* @method _stackYCoords
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* @protected
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*/
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_stackYCoords: function()
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{
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var order = this.get("order"),
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graphic = this.get("graphic"),
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h = graphic.get("height"),
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seriesCollection = this.get("seriesTypeCollection"),
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i = 0,
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xcoords = this.get("xcoords"),
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ycoords = this.get("ycoords"),
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len,
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coord,
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prevCoord,
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prevOrder,
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stackedYCoords = ycoords.concat(),
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prevXCoords,
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prevYCoords,
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nullIndices = [],
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nullIndex;
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if(order > 0)
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{
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prevXCoords = seriesCollection[order - 1].get("stackedXCoords");
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prevYCoords = seriesCollection[order - 1].get("stackedYCoords");
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len = prevYCoords.length;
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}
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else
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{
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len = ycoords.length;
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}
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for(; i < len; i = i + 1)
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{
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if(Y_Lang.isNumber(ycoords[i]))
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{
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if(order > 0)
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{
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prevCoord = prevYCoords[i];
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if(!Y_Lang.isNumber(prevCoord))
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{
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prevOrder = order;
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while(prevOrder > - 1 && !Y_Lang.isNumber(prevCoord))
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{
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prevOrder = prevOrder - 1;
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if(prevOrder > -1)
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{
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prevCoord = seriesCollection[prevOrder].get("stackedYCoords")[i];
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}
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else
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{
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prevCoord = this._bottomOrigin;
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}
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}
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}
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ycoords[i] = prevCoord - (h - ycoords[i]);
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}
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stackedYCoords[i] = ycoords[i];
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}
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else
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{
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nullIndices.push(i);
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}
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}
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this._cleanYNaN(xcoords, stackedYCoords);
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len = nullIndices.length;
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if(len > 0)
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{
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for(i = 0; i < len; i = i + 1)
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{
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nullIndex = nullIndices[i];
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coord = order > 0 ? prevYCoords[nullIndex] : h;
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stackedYCoords[nullIndex] = Math.min(stackedYCoords[nullIndex], coord);
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}
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}
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this.set("stackedXCoords", xcoords);
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this.set("stackedYCoords", stackedYCoords);
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},
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/**
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* Cleans invalid x-coordinates by calculating their value based on the corresponding y-coordinate, the
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* previous valid x-coordinate with its corresponding y-coordinate and the next valid x-coordinate with
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* its corresponding y-coordinate. If there is no previous or next valid x-coordinate, the value will not
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* be altered.
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*
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* @method _cleanXNaN
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* @param {Array} xcoords An array of x-coordinate values
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* @param {Array} ycoords An arry of y-coordinate values
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* @private
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*/
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_cleanXNaN: function(xcoords, ycoords)
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{
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var previousValidIndex,
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nextValidIndex,
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previousValidX,
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previousValidY,
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x,
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y,
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nextValidX,
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nextValidY,
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isNumber = Y_Lang.isNumber,
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m,
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i = 0,
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len = ycoords.length;
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for(; i < len; ++i)
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{
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x = xcoords[i];
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y = ycoords[i];
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//if x is invalid, calculate where it should be
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if(!isNumber(x) && i > 0 && i < len - 1)
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{
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previousValidY = ycoords[i - 1];
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//check to see if the previous value is valid
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previousValidX = this._getPreviousValidCoordValue(xcoords, i);
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nextValidY = ycoords[i + 1];
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nextValidX = this._getNextValidCoordValue(xcoords, i);
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//check to see if the next value is valid
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if(isNumber(previousValidX) && isNumber(nextValidX))
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{
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//calculate slope and solve for x
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m = (nextValidY - previousValidY) / (nextValidX - previousValidX);
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xcoords[i] = (y + (m * previousValidX) - previousValidY)/m;
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}
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previousValidIndex = NaN;
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nextValidIndex = NaN;
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}
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}
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},
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/**
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* Returns the previous valid (numeric) value in an array if available.
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*
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* @method _getPreviousValidCoordValue
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* @param {Array} coords Array of values
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* @param {Number} index The index in the array in which to begin searching.
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* @return Number
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* @private
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*/
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_getPreviousValidCoordValue: function(coords, index)
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{
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var coord,
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isNumber = Y_Lang.isNumber,
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limit = -1;
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while(!isNumber(coord) && index > limit)
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{
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index = index - 1;
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coord = coords[index];
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}
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return coord;
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},
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/**
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* Returns the next valid (numeric) value in an array if available.
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*
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* @method _getNextValidCoordValue
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* @param {Array} coords Array of values
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* @param {Number} index The index in the array in which to begin searching.
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* @return Number
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* @private
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*/
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_getNextValidCoordValue: function(coords, index)
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{
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var coord,
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isNumber = Y_Lang.isNumber,
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limit = coords.length;
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while(!isNumber(coord) && index < limit)
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{
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index = index + 1;
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coord = coords[index];
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}
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return coord;
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},
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/**
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* Cleans invalid y-coordinates by calculating their value based on the corresponding x-coordinate, the
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* previous valid y-coordinate with its corresponding x-coordinate and the next valid y-coordinate with
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* its corresponding x-coordinate. If there is no previous or next valid y-coordinate, the value will not
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* be altered.
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*
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* @method _cleanYNaN
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* @param {Array} xcoords An array of x-coordinate values
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* @param {Array} ycoords An arry of y-coordinate values
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* @private
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*/
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_cleanYNaN: function(xcoords, ycoords)
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{
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var previousValidIndex,
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nextValidIndex,
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previousValidX,
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previousValidY,
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x,
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y,
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nextValidX,
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nextValidY,
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isNumber = Y_Lang.isNumber,
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m,
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i = 0,
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len = xcoords.length;
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for(; i < len; ++i)
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{
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x = xcoords[i];
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y = ycoords[i];
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//if y is invalid, calculate where it should be
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if(!isNumber(y) && i > 0 && i < len - 1)
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{
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//check to see if the previous value is valid
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previousValidX = xcoords[i - 1];
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previousValidY = this._getPreviousValidCoordValue(ycoords, i);
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//check to see if the next value is valid
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nextValidX = xcoords[i + 1];
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nextValidY = this._getNextValidCoordValue(ycoords, i);
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if(isNumber(previousValidY) && isNumber(nextValidY))
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{
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//calculate slope and solve for y
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m = (nextValidY - previousValidY) / (nextValidX - previousValidX);
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ycoords[i] = previousValidY + ((m * x) - (m * previousValidX));
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}
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previousValidIndex = NaN;
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nextValidIndex = NaN;
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}
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}
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}
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};
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Y.StackingUtil = StackingUtil;
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}, '3.17.2', {"requires": ["axis-stacked"]});
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