nvd3-fork
Version:
FORK! of NVD3, a reusable charting library written in d3.js
402 lines (336 loc) • 15.1 kB
JavaScript
nv.models.multiBarHorizontalChart = function() {
"use strict";
//============================================================
// Public Variables with Default Settings
//------------------------------------------------------------
var multibar = nv.models.multiBarHorizontal()
, xAxis = nv.models.axis()
, yAxis = nv.models.axis()
, legend = nv.models.legend().height(30)
, controls = nv.models.legend().height(30)
, tooltip = nv.models.tooltip()
;
var margin = {top: 30, right: 20, bottom: 50, left: 60}
, marginTop = null
, width = null
, height = null
, color = nv.utils.defaultColor()
, showControls = true
, controlsPosition = 'top'
, controlLabels = {}
, showLegend = true
, legendPosition = 'top'
, showXAxis = true
, showYAxis = true
, stacked = false
, x //can be accessed via chart.xScale()
, y //can be accessed via chart.yScale()
, state = nv.utils.state()
, defaultState = null
, noData = null
, dispatch = d3.dispatch('stateChange', 'changeState','renderEnd')
, controlWidth = function() { return showControls ? 180 : 0 }
, duration = 250
;
state.stacked = false; // DEPRECATED Maintained for backward compatibility
multibar.stacked(stacked);
xAxis
.orient('left')
.tickPadding(5)
.showMaxMin(false)
.tickFormat(function(d) { return d })
;
yAxis
.orient('bottom')
.tickFormat(d3.format(',.1f'))
;
tooltip
.duration(0)
.valueFormatter(function(d, i) {
return yAxis.tickFormat()(d, i);
})
.headerFormatter(function(d, i) {
return xAxis.tickFormat()(d, i);
});
controls.updateState(false);
//============================================================
// Private Variables
//------------------------------------------------------------
var stateGetter = function(data) {
return function(){
return {
active: data.map(function(d) { return !d.disabled }),
stacked: stacked
};
}
};
var stateSetter = function(data) {
return function(state) {
if (state.stacked !== undefined)
stacked = state.stacked;
if (state.active !== undefined)
data.forEach(function(series,i) {
series.disabled = !state.active[i];
});
}
};
var renderWatch = nv.utils.renderWatch(dispatch, duration);
function chart(selection) {
renderWatch.reset();
renderWatch.models(multibar);
if (showXAxis) renderWatch.models(xAxis);
if (showYAxis) renderWatch.models(yAxis);
selection.each(function(data) {
var container = d3.select(this),
that = this;
nv.utils.initSVG(container);
var availableWidth = nv.utils.availableWidth(width, container, margin),
availableHeight = nv.utils.availableHeight(height, container, margin);
chart.update = function() { container.transition().duration(duration).call(chart) };
chart.container = this;
stacked = multibar.stacked();
state
.setter(stateSetter(data), chart.update)
.getter(stateGetter(data))
.update();
// DEPRECATED set state.disableddisabled
state.disabled = data.map(function(d) { return !!d.disabled });
if (!defaultState) {
var key;
defaultState = {};
for (key in state) {
if (state[key] instanceof Array)
defaultState[key] = state[key].slice(0);
else
defaultState[key] = state[key];
}
}
// Display No Data message if there's nothing to show.
if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
nv.utils.noData(chart, container)
return chart;
} else {
container.selectAll('.nv-noData').remove();
}
// Setup Scales
x = multibar.xScale();
y = multibar.yScale().clamp(true);
// Setup containers and skeleton of chart
var wrap = container.selectAll('g.nv-wrap.nv-multiBarHorizontalChart').data([data]);
var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-multiBarHorizontalChart').append('g');
var g = wrap.select('g');
gEnter.append('g').attr('class', 'nv-x nv-axis');
gEnter.append('g').attr('class', 'nv-y nv-axis')
.append('g').attr('class', 'nv-zeroLine')
.append('line');
gEnter.append('g').attr('class', 'nv-barsWrap');
gEnter.append('g').attr('class', 'nv-legendWrap');
gEnter.append('g').attr('class', 'nv-controlsWrap');
// Legend
if (!showLegend) {
g.select('.nv-legendWrap').selectAll('*').remove();
} else {
legend.width(availableWidth - controlWidth());
g.select('.nv-legendWrap')
.datum(data)
.call(legend);
if (legendPosition === 'bottom') {
margin.bottom = xAxis.height() + legend.height();
availableHeight = nv.utils.availableHeight(height, container, margin);
g.select('.nv-legendWrap')
.attr('transform', 'translate(' + controlWidth() + ',' + (availableHeight + xAxis.height()) +')');
} else if (legendPosition === 'top') {
if (!marginTop && legend.height() !== margin.top) {
margin.top = legend.height();
availableHeight = nv.utils.availableHeight(height, container, margin);
}
g.select('.nv-legendWrap')
.attr('transform', 'translate(' + controlWidth() + ',' + (-margin.top) +')');
}
}
// Controls
if (!showControls) {
g.select('.nv-controlsWrap').selectAll('*').remove();
} else {
var controlsData = [
{ key: controlLabels.grouped || 'Grouped', disabled: multibar.stacked() },
{ key: controlLabels.stacked || 'Stacked', disabled: !multibar.stacked() }
];
controls.width(controlWidth()).color(['#444', '#444', '#444']);
if (controlsPosition === 'bottom') {
margin.bottom = xAxis.height() + legend.height();
availableHeight = nv.utils.availableHeight(height, container, margin);
g.select('.nv-controlsWrap')
.datum(controlsData)
.attr('transform', 'translate(0,' + (availableHeight + xAxis.height()) +')')
.call(controls);
} else if (controlsPosition === 'top') {
g.select('.nv-controlsWrap')
.datum(controlsData)
.attr('transform', 'translate(0,' + (-margin.top) +')')
.call(controls);
}
}
wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
// Main Chart Component(s)
multibar
.disabled(data.map(function(series) { return series.disabled }))
.width(availableWidth)
.height(availableHeight)
.color(data.map(function(d,i) {
return d.color || color(d, i);
}).filter(function(d,i) { return !data[i].disabled }));
var barsWrap = g.select('.nv-barsWrap')
.datum(data.filter(function(d) { return !d.disabled }));
barsWrap.transition().call(multibar);
// Setup Axes
if (showXAxis) {
xAxis
.scale(x)
._ticks( nv.utils.calcTicksY(availableHeight/24, data) )
.tickSize(-availableWidth, 0);
g.select('.nv-x.nv-axis').call(xAxis);
var xTicks = g.select('.nv-x.nv-axis').selectAll('g');
xTicks
.selectAll('line, text');
}
if (showYAxis) {
yAxis
.scale(y)
._ticks( nv.utils.calcTicksX(availableWidth/100, data) )
.tickSize( -availableHeight, 0);
g.select('.nv-y.nv-axis')
.attr('transform', 'translate(0,' + availableHeight + ')');
g.select('.nv-y.nv-axis').call(yAxis);
}
// Zero line
g.select(".nv-zeroLine line")
.attr("x1", y(0))
.attr("x2", y(0))
.attr("y1", 0)
.attr("y2", -availableHeight)
;
//============================================================
// Event Handling/Dispatching (in chart's scope)
//------------------------------------------------------------
legend.dispatch.on('stateChange', function(newState) {
for (var key in newState)
state[key] = newState[key];
dispatch.stateChange(state);
chart.update();
});
controls.dispatch.on('legendClick', function(d,i) {
if (!d.disabled) return;
controlsData = controlsData.map(function(s) {
s.disabled = true;
return s;
});
d.disabled = false;
switch (d.key) {
case 'Grouped':
case controlLabels.grouped:
multibar.stacked(false);
break;
case 'Stacked':
case controlLabels.stacked:
multibar.stacked(true);
break;
}
state.stacked = multibar.stacked();
dispatch.stateChange(state);
stacked = multibar.stacked();
chart.update();
});
// Update chart from a state object passed to event handler
dispatch.on('changeState', function(e) {
if (typeof e.disabled !== 'undefined') {
data.forEach(function(series,i) {
series.disabled = e.disabled[i];
});
state.disabled = e.disabled;
}
if (typeof e.stacked !== 'undefined') {
multibar.stacked(e.stacked);
state.stacked = e.stacked;
stacked = e.stacked;
}
chart.update();
});
});
renderWatch.renderEnd('multibar horizontal chart immediate');
return chart;
}
//============================================================
// Event Handling/Dispatching (out of chart's scope)
//------------------------------------------------------------
multibar.dispatch.on('elementMouseover.tooltip', function(evt) {
evt.value = chart.x()(evt.data);
evt['series'] = {
key: evt.data.key,
value: chart.y()(evt.data),
color: evt.color
};
tooltip.data(evt).hidden(false);
});
multibar.dispatch.on('elementMouseout.tooltip', function(evt) {
tooltip.hidden(true);
});
multibar.dispatch.on('elementMousemove.tooltip', function(evt) {
tooltip();
});
//============================================================
// Expose Public Variables
//------------------------------------------------------------
// expose chart's sub-components
chart.dispatch = dispatch;
chart.multibar = multibar;
chart.legend = legend;
chart.controls = controls;
chart.xAxis = xAxis;
chart.yAxis = yAxis;
chart.state = state;
chart.tooltip = tooltip;
chart.options = nv.utils.optionsFunc.bind(chart);
chart._options = Object.create({}, {
// simple options, just get/set the necessary values
width: {get: function(){return width;}, set: function(_){width=_;}},
height: {get: function(){return height;}, set: function(_){height=_;}},
showLegend: {get: function(){return showLegend;}, set: function(_){showLegend=_;}},
legendPosition: {get: function(){return legendPosition;}, set: function(_){legendPosition=_;}},
controlsPosition: {get: function(){return controlsPosition;}, set: function(_){controlsPosition=_;}},
showControls: {get: function(){return showControls;}, set: function(_){showControls=_;}},
controlLabels: {get: function(){return controlLabels;}, set: function(_){controlLabels=_;}},
showXAxis: {get: function(){return showXAxis;}, set: function(_){showXAxis=_;}},
showYAxis: {get: function(){return showYAxis;}, set: function(_){showYAxis=_;}},
defaultState: {get: function(){return defaultState;}, set: function(_){defaultState=_;}},
noData: {get: function(){return noData;}, set: function(_){noData=_;}},
// options that require extra logic in the setter
margin: {get: function(){return margin;}, set: function(_){
if (_.top !== undefined) {
margin.top = _.top;
marginTop = _.top;
}
margin.right = _.right !== undefined ? _.right : margin.right;
margin.bottom = _.bottom !== undefined ? _.bottom : margin.bottom;
margin.left = _.left !== undefined ? _.left : margin.left;
}},
duration: {get: function(){return duration;}, set: function(_){
duration = _;
renderWatch.reset(duration);
multibar.duration(duration);
xAxis.duration(duration);
yAxis.duration(duration);
}},
color: {get: function(){return color;}, set: function(_){
color = nv.utils.getColor(_);
legend.color(color);
}},
barColor: {get: function(){return multibar.barColor;}, set: function(_){
multibar.barColor(_);
legend.color(function(d,i) {return d3.rgb('#ccc').darker(i * 1.5).toString();})
}}
});
nv.utils.inheritOptions(chart, multibar);
nv.utils.initOptions(chart);
return chart;
};