/**
* Histogram is the base class for Column and Bar series.
*
* @class Histogram
* @constructor
*/
function Histogram(){}
Histogram.prototype = {
/**
* @protected
*
* Draws the series.
*
* @method drawSeries
*/
drawSeries: function()
{
if(this.get("xcoords").length < 1)
{
return;
}
var style = Y.clone(this.get("styles").marker),
setSize,
calculatedSize,
xcoords = this.get("xcoords"),
ycoords = this.get("ycoords"),
i = 0,
len = xcoords.length,
top = ycoords[0],
type = this.get("type"),
graph = this.get("graph"),
seriesCollection = graph.seriesTypes[type],
seriesLen = seriesCollection.length,
seriesSize = 0,
totalSize = 0,
offset = 0,
ratio,
renderer,
order = this.get("order"),
graphOrder = this.get("graphOrder"),
left,
marker,
setSizeKey,
calculatedSizeKey,
config,
fillColors = null,
borderColors = null,
hotspot,
isChrome = ISCHROME;
if(Y.Lang.isArray(style.fill.color))
{
fillColors = style.fill.color.concat();
}
if(Y.Lang.isArray(style.border.color))
{
borderColors = style.border.colors.concat();
}
if(this.get("direction") == "vertical")
{
setSizeKey = "height";
calculatedSizeKey = "width";
}
else
{
setSizeKey = "width";
calculatedSizeKey = "height";
}
setSize = style[setSizeKey];
calculatedSize = style[calculatedSizeKey];
this._createMarkerCache();
if(isChrome)
{
this._createHotspotCache();
}
for(; i < seriesLen; ++i)
{
renderer = seriesCollection[i];
seriesSize += renderer.get("styles").marker[setSizeKey];
if(order > i)
{
offset = seriesSize;
}
}
totalSize = len * seriesSize;
if(totalSize > graph.get(setSizeKey))
{
ratio = graph.get(setSizeKey)/totalSize;
seriesSize *= ratio;
offset *= ratio;
setSize *= ratio;
setSize = Math.max(setSize, 1);
}
offset -= seriesSize/2;
for(i = 0; i < len; ++i)
{
config = this._getMarkerDimensions(xcoords[i], ycoords[i], calculatedSize, offset);
top = config.top;
calculatedSize = config.calculatedSize;
left = config.left;
style[setSizeKey] = setSize;
style[calculatedSizeKey] = calculatedSize;
if(fillColors)
{
style.fill.color = fillColors[i % fillColors.length];
}
if(borderColors)
{
style.border.colors = borderColors[i % borderColors.length];
}
marker = this.getMarker(style, graphOrder, i);
marker.setPosition(left, top);
if(isChrome)
{
hotspot = this.getHotspot(style, graphOrder, i);
hotspot.setPosition(left, top);
hotspot.parentNode.style.zIndex = 5;
}
}
this._clearMarkerCache();
if(isChrome)
{
this._clearHotspotCache();
}
},
/**
* @private
*/
_defaultFillColors: ["#66007f", "#a86f41", "#295454", "#996ab2", "#e8cdb7", "#90bdbd","#000000","#c3b8ca", "#968373", "#678585"],
/**
* @private
*/
_getPlotDefaults: function()
{
var defs = {
fill:{
type: "solid",
alpha: 1,
colors:null,
alphas: null,
ratios: null
},
border:{
weight: 0,
alpha: 1
},
width: 12,
height: 12,
shape: "rect",
padding:{
top: 0,
left: 0,
right: 0,
bottom: 0
}
};
defs.fill.color = this._getDefaultColor(this.get("graphOrder"), "fill");
defs.border.color = this._getDefaultColor(this.get("graphOrder"), "border");
return defs;
}
};
Y.Histogram = Histogram;