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Added external radius padding #894

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merged 1 commit into from
Jul 30, 2015
Merged

Added external radius padding #894

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23 changes: 19 additions & 4 deletions src/pie-chart.js
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Original file line number Diff line number Diff line change
Expand Up @@ -41,7 +41,8 @@ dc.pieChart = function (parent, chartGroup) {
var _emptyTitle = 'empty';

var _radius,
_innerRadius = 0;
_innerRadius = 0,
_externalRadiusPadding = 0;

var _g;
var _cx;
Expand Down Expand Up @@ -251,6 +252,20 @@ dc.pieChart = function (parent, chartGroup) {
}
}

/**
#### .externalRadiusPadding([externalRadiusPadding])
Get or set the external radius padding of the pie chart. This will force the radius of the
pie chart to become smaller or larger depending on the value. Default external radius padding is 0px.

**/
_chart.externalRadiusPadding = function (_) {
if (!arguments.length) {
return _externalRadiusPadding;
}
_externalRadiusPadding = _;
return _chart;
};

/**
#### .innerRadius([innerRadius])
Get or set the inner radius of the pie chart. If the inner radius is greater than 0px then the
Expand Down Expand Up @@ -306,7 +321,7 @@ dc.pieChart = function (parent, chartGroup) {
};

function buildArcs() {
return d3.svg.arc().outerRadius(_radius).innerRadius(_innerRadius);
return d3.svg.arc().outerRadius(_radius - _externalRadiusPadding).innerRadius(_innerRadius);
}

function isSelectedSlice(d) {
Expand Down Expand Up @@ -413,8 +428,8 @@ dc.pieChart = function (parent, chartGroup) {
var centroid;
if (_externalLabelRadius) {
centroid = d3.svg.arc()
.outerRadius(_radius + _externalLabelRadius)
.innerRadius(_radius + _externalLabelRadius)
.outerRadius(_radius - _externalRadiusPadding + _externalLabelRadius)
.innerRadius(_radius - _externalRadiusPadding + _externalLabelRadius)
.centroid(d);
} else {
centroid = arc.centroid(d);
Expand Down