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nv.models.sparkline = function() {
"use strict";
//============================================================
// Public Variables with Default Settings
//------------------------------------------------------------
var margin = {top: 2, right: 0, bottom: 2, left: 0}
, width = 400
, height = 32
, animate = true
, x = d3.scale.linear()
, y = d3.scale.linear()
, getX = function(d) { return d.x }
, getY = function(d) { return d.y }
, color = nv.utils.getColor(['#000'])
, xDomain
, yDomain
, xRange
, yRange
;
//============================================================
function chart(selection) {
selection.each(function(data) {
var availableWidth = width - margin.left - margin.right,
availableHeight = height - margin.top - margin.bottom,
container = d3.select(this);
//------------------------------------------------------------
// Setup Scales
x .domain(xDomain || d3.extent(data, getX ))
.range(xRange || [0, availableWidth]);
y .domain(yDomain || d3.extent(data, getY ))
.range(yRange || [availableHeight, 0]);
//------------------------------------------------------------
//------------------------------------------------------------
// Setup containers and skeleton of chart
var wrap = container.selectAll('g.nv-wrap.nv-sparkline').data([data]);
var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-sparkline');
var gEnter = wrapEnter.append('g');
var g = wrap.select('g');
wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')')
//------------------------------------------------------------
var paths = wrap.selectAll('path')
.data(function(d) { return [d] });
paths.enter().append('path');
paths.exit().remove();
paths
.style('stroke', function(d,i) { return d.color || color(d, i) })
.attr('d', d3.svg.line()
.x(function(d,i) { return x(getX(d,i)) })
.y(function(d,i) { return y(getY(d,i)) })
);
// TODO: Add CURRENT data point (Need Min, Mac, Current / Most recent)
var points = wrap.selectAll('circle.nv-point')
.data(function(data) {
var yValues = data.map(function(d, i) { return getY(d,i); });
function pointIndex(index) {
if (index != -1) {
var result = data[index];
result.pointIndex = index;
return result;
} else {
return null;
}
}
var maxPoint = pointIndex(yValues.lastIndexOf(y.domain()[1])),
minPoint = pointIndex(yValues.indexOf(y.domain()[0])),
currentPoint = pointIndex(yValues.length - 1);
return [minPoint, maxPoint, currentPoint].filter(function (d) {return d != null;});
});
points.enter().append('circle');
points.exit().remove();
points
.attr('cx', function(d,i) { return x(getX(d,d.pointIndex)) })
.attr('cy', function(d,i) { return y(getY(d,d.pointIndex)) })
.attr('r', 2)
.attr('class', function(d,i) {
return getX(d, d.pointIndex) == x.domain()[1] ? 'nv-point nv-currentValue' :
getY(d, d.pointIndex) == y.domain()[0] ? 'nv-point nv-minValue' : 'nv-point nv-maxValue'
});
});
return chart;
}
//============================================================
// Expose Public Variables
//------------------------------------------------------------
chart.options = nv.utils.optionsFunc.bind(chart);
chart.margin = function(_) {
if (!arguments.length) return margin;
margin.top = typeof _.top != 'undefined' ? _.top : margin.top;
margin.right = typeof _.right != 'undefined' ? _.right : margin.right;
margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
margin.left = typeof _.left != 'undefined' ? _.left : margin.left;
return chart;
};
chart.width = function(_) {
if (!arguments.length) return width;
width = _;
return chart;
};
chart.height = function(_) {
if (!arguments.length) return height;
height = _;
return chart;
};
chart.x = function(_) {
if (!arguments.length) return getX;
getX = d3.functor(_);
return chart;
};
chart.y = function(_) {
if (!arguments.length) return getY;
getY = d3.functor(_);
return chart;
};
chart.xScale = function(_) {
if (!arguments.length) return x;
x = _;
return chart;
};
chart.yScale = function(_) {
if (!arguments.length) return y;
y = _;
return chart;
};
chart.xDomain = function(_) {
if (!arguments.length) return xDomain;
xDomain = _;
return chart;
};
chart.yDomain = function(_) {
if (!arguments.length) return yDomain;
yDomain = _;
return chart;
};
chart.xRange = function(_) {
if (!arguments.length) return xRange;
xRange = _;
return chart;
};
chart.yRange = function(_) {
if (!arguments.length) return yRange;
yRange = _;
return chart;
};
chart.animate = function(_) {
if (!arguments.length) return animate;
animate = _;
return chart;
};
chart.color = function(_) {
if (!arguments.length) return color;
color = nv.utils.getColor(_);
return chart;
};
//============================================================
return chart;
}
|
