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nv.d3.js
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nv.d3.js
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(function(){
var nv = window.nv || {};
nv.version = '0.0.1a';
nv.dev = true //set false when in production
window.nv = nv;
nv.tooltip = {}; // For the tooltip system
nv.utils = {}; // Utility subsystem
nv.models = {}; //stores all the possible models/components
nv.charts = {}; //stores all the ready to use charts
nv.graphs = []; //stores all the graphs currently on the page
nv.logs = {}; //stores some statistics and potential error messages
nv.dispatch = d3.dispatch('render_start', 'render_end');
// *************************************************************************
// Development render timers - disabled if dev = false
if (nv.dev) {
nv.dispatch.on('render_start', function(e) {
nv.logs.startTime = +new Date();
});
nv.dispatch.on('render_end', function(e) {
nv.logs.endTime = +new Date();
nv.logs.totalTime = nv.logs.endTime - nv.logs.startTime;
nv.log('total', nv.logs.totalTime); // used for development, to keep track of graph generation times
});
}
// ********************************************
// Public Core NV functions
// Logs all arguments, and returns the last so you can test things in place
nv.log = function() {
if (nv.dev && console.log && console.log.apply)
console.log.apply(console, arguments)
else if (nv.dev && console.log && Function.prototype.bind) {
var log = Function.prototype.bind.call(console.log, console);
log.apply(console, arguments);
}
return arguments[arguments.length - 1];
};
nv.render = function render(step) {
step = step || 1; // number of graphs to generate in each timeout loop
nv.render.active = true;
nv.dispatch.render_start();
setTimeout(function() {
var chart, graph;
for (var i = 0; i < step && (graph = nv.render.queue[i]); i++) {
chart = graph.generate();
if (typeof graph.callback == typeof(Function)) graph.callback(chart);
nv.graphs.push(chart);
}
nv.render.queue.splice(0, i);
if (nv.render.queue.length) setTimeout(arguments.callee, 0);
else { nv.render.active = false; nv.dispatch.render_end(); }
}, 0);
};
nv.render.active = false;
nv.render.queue = [];
nv.addGraph = function(obj) {
if (typeof arguments[0] === typeof(Function))
obj = {generate: arguments[0], callback: arguments[1]};
nv.render.queue.push(obj);
if (!nv.render.active) nv.render();
};
nv.identity = function(d) { return d; };
nv.strip = function(s) { return s.replace(/(\s|&)/g,''); };
function daysInMonth(month,year) {
return (new Date(year, month+1, 0)).getDate();
}
function d3_time_range(floor, step, number) {
return function(t0, t1, dt) {
var time = floor(t0), times = [];
if (time < t0) step(time);
if (dt > 1) {
while (time < t1) {
var date = new Date(+time);
if ((number(date) % dt === 0)) times.push(date);
step(time);
}
} else {
while (time < t1) { times.push(new Date(+time)); step(time); }
}
return times;
};
}
d3.time.monthEnd = function(date) {
return new Date(date.getFullYear(), date.getMonth(), 0);
};
d3.time.monthEnds = d3_time_range(d3.time.monthEnd, function(date) {
date.setUTCDate(date.getUTCDate() + 1);
date.setDate(daysInMonth(date.getMonth() + 1, date.getFullYear()));
}, function(date) {
return date.getMonth();
}
);
/*****
* A no-frills tooltip implementation.
*****/
(function() {
var nvtooltip = window.nv.tooltip = {};
nvtooltip.show = function(pos, content, gravity, dist, parentContainer, classes) {
var container = document.createElement('div');
container.className = 'nvtooltip ' + (classes ? classes : 'xy-tooltip');
gravity = gravity || 's';
dist = dist || 20;
var body = parentContainer;
if ( !parentContainer || parentContainer.tagName.match(/g|svg/i)) {
//If the parent element is an SVG element, place tooltip in the <body> element.
body = document.getElementsByTagName('body')[0];
}
container.innerHTML = content;
container.style.left = 0;
container.style.top = 0;
container.style.opacity = 0;
body.appendChild(container);
var height = parseInt(container.offsetHeight),
width = parseInt(container.offsetWidth),
windowWidth = nv.utils.windowSize().width,
windowHeight = nv.utils.windowSize().height,
scrollTop = window.scrollY,
scrollLeft = window.scrollX,
left, top;
windowHeight = window.innerWidth >= document.body.scrollWidth ? windowHeight : windowHeight - 16;
windowWidth = window.innerHeight >= document.body.scrollHeight ? windowWidth : windowWidth - 16;
var tooltipTop = function ( Elem ) {
var offsetTop = top;
do {
if( !isNaN( Elem.offsetTop ) ) {
offsetTop += (Elem.offsetTop);
}
} while( Elem = Elem.offsetParent );
return offsetTop;
}
var tooltipLeft = function ( Elem ) {
var offsetLeft = left;
do {
if( !isNaN( Elem.offsetLeft ) ) {
offsetLeft += (Elem.offsetLeft);
}
} while( Elem = Elem.offsetParent );
return offsetLeft;
}
switch (gravity) {
case 'e':
left = pos[0] - width - dist;
top = pos[1] - (height / 2);
var tLeft = tooltipLeft(container);
var tTop = tooltipTop(container);
if (tLeft < scrollLeft) left = pos[0] + dist > scrollLeft ? pos[0] + dist : scrollLeft - tLeft + left;
if (tTop < scrollTop) top = scrollTop - tTop + top;
if (tTop + height > scrollTop + windowHeight) top = scrollTop + windowHeight - tTop + top - height;
break;
case 'w':
left = pos[0] + dist;
top = pos[1] - (height / 2);
if (tLeft + width > windowWidth) left = pos[0] - width - dist;
if (tTop < scrollTop) top = scrollTop + 5;
if (tTop + height > scrollTop + windowHeight) top = scrollTop - height - 5;
break;
case 'n':
left = pos[0] - (width / 2) - 5;
top = pos[1] + dist;
var tLeft = tooltipLeft(container);
var tTop = tooltipTop(container);
if (tLeft < scrollLeft) left = scrollLeft + 5;
if (tLeft + width > windowWidth) left = left - width/2 + 5;
if (tTop + height > scrollTop + windowHeight) top = scrollTop + windowHeight - tTop + top - height;
break;
case 's':
left = pos[0] - (width / 2);
top = pos[1] - height - dist;
var tLeft = tooltipLeft(container);
var tTop = tooltipTop(container);
if (tLeft < scrollLeft) left = scrollLeft + 5;
if (tLeft + width > windowWidth) left = left - width/2 + 5;
if (scrollTop > tTop) top = scrollTop;
break;
}
container.style.left = left+'px';
container.style.top = top+'px';
container.style.opacity = 1;
container.style.position = 'absolute'; //fix scroll bar issue
container.style.pointerEvents = 'none'; //fix scroll bar issue
return container;
};
nvtooltip.cleanup = function() {
// Find the tooltips, mark them for removal by this class (so others cleanups won't find it)
var tooltips = document.getElementsByClassName('nvtooltip');
var purging = [];
while(tooltips.length) {
purging.push(tooltips[0]);
tooltips[0].style.transitionDelay = '0 !important';
tooltips[0].style.opacity = 0;
tooltips[0].className = 'nvtooltip-pending-removal';
}
setTimeout(function() {
while (purging.length) {
var removeMe = purging.pop();
removeMe.parentNode.removeChild(removeMe);
}
}, 500);
};
})();
nv.utils.windowSize = function() {
// Sane defaults
var size = {width: 640, height: 480};
// Earlier IE uses Doc.body
if (document.body && document.body.offsetWidth) {
size.width = document.body.offsetWidth;
size.height = document.body.offsetHeight;
}
// IE can use depending on mode it is in
if (document.compatMode=='CSS1Compat' &&
document.documentElement &&
document.documentElement.offsetWidth ) {
size.width = document.documentElement.offsetWidth;
size.height = document.documentElement.offsetHeight;
}
// Most recent browsers use
if (window.innerWidth && window.innerHeight) {
size.width = window.innerWidth;
size.height = window.innerHeight;
}
return (size);
};
// Easy way to bind multiple functions to window.onresize
// TODO: give a way to remove a function after its bound, other than removing all of them
nv.utils.windowResize = function(fun){
var oldresize = window.onresize;
window.onresize = function(e) {
if (typeof oldresize == 'function') oldresize(e);
fun(e);
}
}
// Backwards compatible way to implement more d3-like coloring of graphs.
// If passed an array, wrap it in a function which implements the old default
// behavior
nv.utils.getColor = function(color) {
if (!arguments.length) return nv.utils.defaultColor(); //if you pass in nothing, get default colors back
if( Object.prototype.toString.call( color ) === '[object Array]' )
return function(d, i) { return d.color || color[i % color.length]; };
else
return color;
//can't really help it if someone passes rubbish as color
}
// Default color chooser uses the index of an object as before.
nv.utils.defaultColor = function() {
var colors = d3.scale.category20().range();
return function(d, i) { return d.color || colors[i % colors.length] };
}
// Returns a color function that takes the result of 'getKey' for each series and
// looks for a corresponding color from the dictionary,
nv.utils.customTheme = function(dictionary, getKey, defaultColors) {
getKey = getKey || function(series) { return series.key }; // use default series.key if getKey is undefined
defaultColors = defaultColors || d3.scale.category20().range(); //default color function
var defIndex = defaultColors.length; //current default color (going in reverse)
return function(series, index) {
var key = getKey(series);
if (!defIndex) defIndex = defaultColors.length; //used all the default colors, start over
if (typeof dictionary[key] !== "undefined")
return (typeof dictionary[key] === "function") ? dictionary[key]() : dictionary[key];
else
return defaultColors[--defIndex]; // no match in dictionary, use default color
}
}
// From the PJAX example on d3js.org, while this is not really directly needed
// it's a very cool method for doing pjax, I may expand upon it a little bit,
// open to suggestions on anything that may be useful
nv.utils.pjax = function(links, content) {
d3.selectAll(links).on("click", function() {
history.pushState(this.href, this.textContent, this.href);
load(this.href);
d3.event.preventDefault();
});
function load(href) {
d3.html(href, function(fragment) {
var target = d3.select(content).node();
target.parentNode.replaceChild(d3.select(fragment).select(content).node(), target);
nv.utils.pjax(links, content);
});
}
d3.select(window).on("popstate", function() {
if (d3.event.state) load(d3.event.state);
});
}
/* For situations where we want to approximate the width in pixels for an SVG:text element.
Most common instance is when the element is in a display:none; container.
Forumla is : text.length * font-size * constant_factor
*/
nv.utils.calcApproxTextWidth = function (svgTextElem) {
if (svgTextElem instanceof d3.selection) {
var fontSize = parseInt(svgTextElem.style("font-size").replace("px",""));
var textLength = svgTextElem.text().length;
return textLength * fontSize * 0.5;
}
return 0;
};
nv.models.axis = function() {
//============================================================
// Public Variables with Default Settings
//------------------------------------------------------------
var axis = d3.svg.axis()
;
var margin = {top: 0, right: 0, bottom: 0, left: 0}
, width = 75 //only used for tickLabel currently
, height = 60 //only used for tickLabel currently
, scale = d3.scale.linear()
, axisLabelText = null
, showMaxMin = true //TODO: showMaxMin should be disabled on all ordinal scaled axes
, highlightZero = true
, rotateLabels = 0
, rotateYLabel = true
, staggerLabels = false
, isOrdinal = false
, ticks = null
, showDomains = false
;
axis
.scale(scale)
.orient('bottom')
.tickFormat(function(d) { return d })
;
//============================================================
//============================================================
// Private Variables
//------------------------------------------------------------
var scale0;
//============================================================
function chart(selection) {
selection.each(function(data) {
var container = d3.select(this);
//------------------------------------------------------------
// Setup containers and skeleton of chart
var wrap = container.selectAll('g.nv-wrap.nv-axis').data([data]);
var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-axis');
var gEnter = wrapEnter.append('g');
var g = wrap.select('g')
//------------------------------------------------------------
if (ticks !== null)
axis.ticks(ticks);
else if (axis.orient() == 'top' || axis.orient() == 'bottom')
axis.ticks(Math.abs(scale.range()[1] - scale.range()[0]) / 100);
//TODO: consider calculating width/height based on whether or not label is added, for reference in charts using this component
d3.transition(g)
.call(axis);
scale0 = scale0 || axis.scale();
var fmt = axis.tickFormat();
if (fmt == null) {
fmt = scale0.tickFormat();
}
var axisLabel = g.selectAll('text.nv-axislabel')
.data([axisLabelText || null]);
axisLabel.exit().remove();
switch (axis.orient()) {
case 'top':
axisLabel.enter().append('text').attr('class', 'nv-axislabel');
var w = (scale.range().length==2) ? scale.range()[1] : (scale.range()[scale.range().length-1]+(scale.range()[1]-scale.range()[0]));
axisLabel
.attr('text-anchor', 'middle')
.attr('y', 0)
.attr('x', w/2);
if (showMaxMin) {
var axisMaxMin = wrap.selectAll('g.nv-axisMaxMin')
.data(scale.domain());
axisMaxMin.enter().append('g').attr('class', 'nv-axisMaxMin').append('text');
axisMaxMin.exit().remove();
axisMaxMin
.attr('transform', function(d,i) {
return 'translate(' + scale(d) + ',0)'
})
.select('text')
.attr('dy', '0em')
.attr('y', -axis.tickPadding())
.attr('text-anchor', 'middle')
.text(function(d,i) {
var v = fmt(d);
return ('' + v).match('NaN') ? '' : v;
});
d3.transition(axisMaxMin)
.attr('transform', function(d,i) {
return 'translate(' + scale.range()[i] + ',0)'
});
}
break;
case 'bottom':
var xLabelMargin = 36;
var maxTextWidth = 30;
var xTicks = g.selectAll('g').select("text");
if (rotateLabels%360) {
//Calculate the longest xTick width
xTicks.each(function(d,i){
var width = this.getBBox().width;
if(width > maxTextWidth) maxTextWidth = width;
});
//Convert to radians before calculating sin. Add 30 to margin for healthy padding.
var sin = Math.abs(Math.sin(rotateLabels*Math.PI/180));
var xLabelMargin = (sin ? sin*maxTextWidth : maxTextWidth)+30;
//Rotate all xTicks
xTicks
// Change second args of rotate for improve UI
.attr('transform', function(d,i,j) { return 'rotate(' + rotateLabels + ' 40,30)' })
.attr('text-anchor', rotateLabels%360 > 0 ? 'start' : 'end');
}
axisLabel.enter().append('text').attr('class', 'nv-axislabel');
var w = (scale.range().length==2) ? scale.range()[1] : (scale.range()[scale.range().length-1]+(scale.range()[1]-scale.range()[0]));
axisLabel
.attr('text-anchor', 'middle')
.attr('y', xLabelMargin)
.attr('x', w/2);
if (showMaxMin) {
//if (showMaxMin && !isOrdinal) {
var axisMaxMin = wrap.selectAll('g.nv-axisMaxMin')
//.data(scale.domain())
.data([scale.domain()[0], scale.domain()[scale.domain().length - 1]]);
axisMaxMin.enter().append('g').attr('class', 'nv-axisMaxMin').append('text');
axisMaxMin.exit().remove();
axisMaxMin
.attr('transform', function(d,i) {
return 'translate(' + (scale(d) + (isOrdinal ? scale.rangeBand() / 2 : 0)) + ',0)'
})
.select('text')
.attr('dy', '.71em')
.attr('y', axis.tickPadding())
.attr('transform', function(d,i,j) { return 'rotate(' + rotateLabels + ' 0,0)' })
.attr('text-anchor', rotateLabels ? (rotateLabels%360 > 0 ? 'start' : 'end') : 'middle')
.text(function(d,i) {
var v = fmt(d);
return ('' + v).match('NaN') ? '' : v;
});
d3.transition(axisMaxMin)
.attr('transform', function(d,i) {
//return 'translate(' + scale.range()[i] + ',0)'
//return 'translate(' + scale(d) + ',0)'
return 'translate(' + (scale(d) + (isOrdinal ? scale.rangeBand() / 2 : 0)) + ',0)'
});
}
if (staggerLabels)
xTicks
.attr('transform', function(d,i) { return 'translate(0,' + (i % 2 == 0 ? '0' : '12') + ')' });
break;
case 'right':
axisLabel.enter().append('text').attr('class', 'nv-axislabel');
axisLabel
.attr('text-anchor', rotateYLabel ? 'middle' : 'begin')
.attr('transform', rotateYLabel ? 'rotate(90)' : '')
.attr('y', rotateYLabel ? (-Math.max(margin.right,width) + 12) : -10) //TODO: consider calculating this based on largest tick width... OR at least expose this on chart
.attr('x', rotateYLabel ? (scale.range()[0] / 2) : axis.tickPadding());
if (showMaxMin) {
var axisMaxMin = wrap.selectAll('g.nv-axisMaxMin')
.data(scale.domain());
axisMaxMin.enter().append('g').attr('class', 'nv-axisMaxMin').append('text')
.style('opacity', 0);
axisMaxMin.exit().remove();
axisMaxMin
.attr('transform', function(d,i) {
return 'translate(0,' + scale(d) + ')'
})
.select('text')
.attr('dy', '.32em')
.attr('y', 0)
.attr('x', axis.tickPadding())
.attr('text-anchor', 'start')
.text(function(d,i) {
var v = fmt(d);
return ('' + v).match('NaN') ? '' : v;
});
d3.transition(axisMaxMin)
.attr('transform', function(d,i) {
return 'translate(0,' + scale.range()[i] + ')'
})
.select('text')
.style('opacity', 1);
}
break;
case 'left':
/*
//For dynamically placing the label. Can be used with dynamically-sized chart axis margins
var yTicks = g.selectAll('g').select("text");
yTicks.each(function(d,i){
var labelPadding = this.getBBox().width + axis.tickPadding() + 16;
if(labelPadding > width) width = labelPadding;
});
*/
axisLabel.enter().append('text').attr('class', 'nv-axislabel');
axisLabel
.attr('text-anchor', rotateYLabel ? 'middle' : 'end')
.attr('transform', rotateYLabel ? 'rotate(-90)' : '')
.attr('y', rotateYLabel ? (-Math.max(margin.left,width) + 12) : -10) //TODO: consider calculating this based on largest tick width... OR at least expose this on chart
.attr('x', rotateYLabel ? (-scale.range()[0] / 2) : -axis.tickPadding());
if (showMaxMin) {
var axisMaxMin = wrap.selectAll('g.nv-axisMaxMin')
.data(scale.domain());
axisMaxMin.enter().append('g').attr('class', 'nv-axisMaxMin').append('text')
.style('opacity', 0);
axisMaxMin.exit().remove();
axisMaxMin
.attr('transform', function(d,i) {
return 'translate(0,' + scale0(d) + ')'
})
.select('text')
.attr('dy', '.32em')
.attr('y', 0)
.attr('x', -axis.tickPadding())
.attr('text-anchor', 'end')
.text(function(d,i) {
var v = fmt(d);
return ('' + v).match('NaN') ? '' : v;
});
d3.transition(axisMaxMin)
.attr('transform', function(d,i) {
return 'translate(0,' + scale.range()[i] + ')'
})
.select('text')
.style('opacity', 1);
}
break;
}
axisLabel
.text(function(d) { return d });
if (!showDomains) {
d3.selectAll('.domain')
.style('display', 'none');
}
if (showMaxMin && (axis.orient() === 'left' || axis.orient() === 'right')) {
//check if max and min overlap other values, if so, hide the values that overlap
g.selectAll('g') // the g's wrapping each tick
.each(function(d,i) {
d3.select(this).select('text').attr('opacity', 1);
if (scale(d) < scale.range()[1] + 10 || scale(d) > scale.range()[0] - 10) { // 10 is assuming text height is 16... if d is 0, leave it!
if (d > 1e-10 || d < -1e-10) // accounts for minor floating point errors... though could be problematic if the scale is EXTREMELY SMALL
d3.select(this).attr('opacity', 0);
d3.select(this).select('text').attr('opacity', 0); // Don't remove the ZERO line!!
}
});
//if Max and Min = 0 only show min, Issue #281
if (scale.domain()[0] == scale.domain()[1] && scale.domain()[0] == 0)
wrap.selectAll('g.nv-axisMaxMin')
.style('opacity', function(d,i) { return !i ? 1 : 0 });
}
if (showMaxMin && (axis.orient() === 'top' || axis.orient() === 'bottom')) {
var maxMinRange = [];
wrap.selectAll('g.nv-axisMaxMin')
.each(function(d,i) {
try {
if (i) // i== 1, max position
maxMinRange.push(scale(d) - this.getBBox().width - 4) //assuming the max and min labels are as wide as the next tick (with an extra 4 pixels just in case)
else // i==0, min position
maxMinRange.push(scale(d) + this.getBBox().width + 4)
}catch (err) {
if (i) // i== 1, max position
maxMinRange.push(scale(d) - 4) //assuming the max and min labels are as wide as the next tick (with an extra 4 pixels just in case)
else // i==0, min position
maxMinRange.push(scale(d) + 4)
}
});
g.selectAll('g') // the g's wrapping each tick
.each(function(d,i) {
if (scale(d) < maxMinRange[0] || scale(d) > maxMinRange[1]) {
if (d > 1e-10 || d < -1e-10) // accounts for minor floating point errors... though could be problematic if the scale is EXTREMELY SMALL
d3.select(this).remove();
else
d3.select(this).select('text').remove(); // Don't remove the ZERO line!!
}
});
}
//highlight zero line ... Maybe should not be an option and should just be in CSS?
if (highlightZero)
g.selectAll('.tick')
.filter(function(d) { return !parseFloat(Math.round(d.__data__*100000)/1000000) && (d.__data__ !== undefined) }) //this is because sometimes the 0 tick is a very small fraction, TODO: think of cleaner technique
.classed('zero', true);
//store old scales for use in transitions on update
scale0 = scale.copy();
});
return chart;
}
//============================================================
// Expose Public Variables
//------------------------------------------------------------
// expose chart's sub-components
chart.axis = axis;
d3.rebind(chart, axis, 'orient', 'tickValues', 'tickSubdivide', 'tickSize', 'tickPadding', 'tickFormat');
d3.rebind(chart, scale, 'domain', 'range', 'rangeBand', 'rangeBands'); //these are also accessible by chart.scale(), but added common ones directly for ease of use
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.ticks = function(_) {
if (!arguments.length) return ticks;
ticks = _;
return chart;
};
chart.height = function(_) {
if (!arguments.length) return height;
height = _;
return chart;
};
chart.axisLabel = function(_) {
if (!arguments.length) return axisLabelText;
axisLabelText = _;
return chart;
}
chart.showMaxMin = function(_) {
if (!arguments.length) return showMaxMin;
showMaxMin = _;
return chart;
}
chart.highlightZero = function(_) {
if (!arguments.length) return highlightZero;
highlightZero = _;
return chart;
}
chart.scale = function(_) {
if (!arguments.length) return scale;
scale = _;
axis.scale(scale);
isOrdinal = typeof scale.rangeBands === 'function';
d3.rebind(chart, scale, 'domain', 'range', 'rangeBand', 'rangeBands');
return chart;
}
chart.rotateYLabel = function(_) {
if(!arguments.length) return rotateYLabel;
rotateYLabel = _;
return chart;
}
chart.rotateLabels = function(_) {
if(!arguments.length) return rotateLabels;
rotateLabels = _;
return chart;
}
chart.staggerLabels = function(_) {
if (!arguments.length) return staggerLabels;
staggerLabels = _;
return chart;
};
chart.isOrdinal = function(_) {
if (!arguments.length) return isOrdinal;
isOrdinal = _;
return chart;
};
chart.showDomains = function(_) {
if (!arguments.length) return showDomains;
showDomains = _;
return chart;
};
//============================================================
return chart;
}
// Chart design based on the recommendations of Stephen Few. Implementation
// based on the work of Clint Ivy, Jamie Love, and Jason Davies.
// http://projects.instantcognition.com/protovis/bulletchart/
nv.models.bullet = function() {
//============================================================
// Public Variables with Default Settings
//------------------------------------------------------------
var margin = {top: 0, right: 0, bottom: 0, left: 0}
, orient = 'left' // TODO top & bottom
, reverse = false
, ranges = function(d) { return d.ranges }
, markers = function(d) { return d.markers }
, measures = function(d) { return d.measures }
, forceX = [0] // List of numbers to Force into the X scale (ie. 0, or a max / min, etc.)
, width = 380
, height = 30
, tickFormat = null
, color = nv.utils.getColor(['#1f77b4'])
, dispatch = d3.dispatch('elementMouseover', 'elementMouseout')
;
//============================================================
function chart(selection) {
selection.each(function(d, i) {
var availableWidth = width - margin.left - margin.right,
availableHeight = height - margin.top - margin.bottom,
container = d3.select(this);
var rangez = ranges.call(this, d, i).slice().sort(d3.descending),
markerz = markers.call(this, d, i).slice().sort(d3.descending),
measurez = measures.call(this, d, i).slice().sort(d3.descending);
//------------------------------------------------------------
// Setup Scales
// Compute the new x-scale.
var x1 = d3.scale.linear()
.domain( d3.extent(d3.merge([forceX, rangez])) )
.range(reverse ? [availableWidth, 0] : [0, availableWidth]);
// Retrieve the old x-scale, if this is an update.
var x0 = this.__chart__ || d3.scale.linear()
.domain([0, Infinity])
.range(x1.range());
// Stash the new scale.
this.__chart__ = x1;
var rangeMin = d3.min(rangez), //rangez[2]
rangeMax = d3.max(rangez), //rangez[0]
rangeAvg = rangez[1];
//------------------------------------------------------------
//------------------------------------------------------------
// Setup containers and skeleton of chart
var wrap = container.selectAll('g.nv-wrap.nv-bullet').data([d]);
var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-bullet');
var gEnter = wrapEnter.append('g');
var g = wrap.select('g');
gEnter.append('rect').attr('class', 'nv-range nv-rangeMax');
gEnter.append('rect').attr('class', 'nv-range nv-rangeAvg');
gEnter.append('rect').attr('class', 'nv-range nv-rangeMin');
gEnter.append('rect').attr('class', 'nv-measure');
gEnter.append('path').attr('class', 'nv-markerTriangle');
wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
//------------------------------------------------------------
var w0 = function(d) { return Math.abs(x0(d) - x0(0)) }, // TODO: could optimize by precalculating x0(0) and x1(0)
w1 = function(d) { return Math.abs(x1(d) - x1(0)) };
var xp0 = function(d) { return d < 0 ? x0(d) : x0(0) },
xp1 = function(d) { return d < 0 ? x1(d) : x1(0) };
g.select('rect.nv-rangeMax')
.attr('height', availableHeight)
.attr('width', w1(rangeMax > 0 ? rangeMax : rangeMin))
.attr('x', xp1(rangeMax > 0 ? rangeMax : rangeMin))
.datum(rangeMax > 0 ? rangeMax : rangeMin)
/*
.attr('x', rangeMin < 0 ?
rangeMax > 0 ?
x1(rangeMin)
: x1(rangeMax)
: x1(0))
*/
g.select('rect.nv-rangeAvg')
.attr('height', availableHeight)
.attr('width', w1(rangeAvg))
.attr('x', xp1(rangeAvg))
.datum(rangeAvg)
/*
.attr('width', rangeMax <= 0 ?
x1(rangeMax) - x1(rangeAvg)
: x1(rangeAvg) - x1(rangeMin))
.attr('x', rangeMax <= 0 ?
x1(rangeAvg)
: x1(rangeMin))
*/
g.select('rect.nv-rangeMin')
.attr('height', availableHeight)
.attr('width', w1(rangeMax))
.attr('x', xp1(rangeMax))
.attr('width', w1(rangeMax > 0 ? rangeMin : rangeMax))
.attr('x', xp1(rangeMax > 0 ? rangeMin : rangeMax))
.datum(rangeMax > 0 ? rangeMin : rangeMax)
/*
.attr('width', rangeMax <= 0 ?
x1(rangeAvg) - x1(rangeMin)
: x1(rangeMax) - x1(rangeAvg))
.attr('x', rangeMax <= 0 ?
x1(rangeMin)
: x1(rangeAvg))
*/
g.select('rect.nv-measure')
.style('fill', color)
.attr('height', availableHeight / 3)
.attr('y', availableHeight / 3)
.attr('width', measurez < 0 ?
x1(0) - x1(measurez[0])
: x1(measurez[0]) - x1(0))
.attr('x', xp1(measurez))
.on('mouseover', function() {
dispatch.elementMouseover({
value: measurez[0],
label: 'Current',
pos: [x1(measurez[0]), availableHeight/2]
})
})
.on('mouseout', function() {
dispatch.elementMouseout({
value: measurez[0],
label: 'Current'
})
})
var h3 = availableHeight / 6;
if (markerz[0]) {
g.selectAll('path.nv-markerTriangle')
.attr('transform', function(d) { return 'translate(' + x1(markerz[0]) + ',' + (availableHeight / 2) + ')' })
.attr('d', 'M0,' + h3 + 'L' + h3 + ',' + (-h3) + ' ' + (-h3) + ',' + (-h3) + 'Z')
.on('mouseover', function() {
dispatch.elementMouseover({
value: markerz[0],
label: 'Previous',
pos: [x1(markerz[0]), availableHeight/2]
})
})
.on('mouseout', function() {
dispatch.elementMouseout({
value: markerz[0],
label: 'Previous'
})
});
} else {
g.selectAll('path.nv-markerTriangle').remove();
}
wrap.selectAll('.nv-range')
.on('mouseover', function(d,i) {
var label = !i ? "Maximum" : i == 1 ? "Mean" : "Minimum";
dispatch.elementMouseover({
value: d,
label: label,
pos: [x1(d), availableHeight/2]
})
})
.on('mouseout', function(d,i) {
var label = !i ? "Maximum" : i == 1 ? "Mean" : "Minimum";
dispatch.elementMouseout({
value: d,
label: label
})
})
/* // THIS IS THE PREVIOUS BULLET IMPLEMENTATION, WILL REMOVE SHORTLY
// Update the range rects.
var range = g.selectAll('rect.nv-range')
.data(rangez);
range.enter().append('rect')
.attr('class', function(d, i) { return 'nv-range nv-s' + i; })
.attr('width', w0)
.attr('height', availableHeight)
.attr('x', reverse ? x0 : 0)
.on('mouseover', function(d,i) {
dispatch.elementMouseover({
value: d,
label: (i <= 0) ? 'Maximum' : (i > 1) ? 'Minimum' : 'Mean', //TODO: make these labels a variable
pos: [x1(d), availableHeight/2]
})
})
.on('mouseout', function(d,i) {
dispatch.elementMouseout({