--- /dev/null
+
+// 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
+ , 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),
+ mainGroup = nv.log(this.parentNode.parentNode).getAttribute('transform'),
+ heightFromTop = nv.log(parseInt(mainGroup.replace(/.*,(\d+)\)/,"$1"))); //TODO: There should be a smarter way to get this value
+
+ 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 MaxX = Math.max(rangez[0] ? rangez[0]:0 , markerz[0] ? markerz[0] : 0 , measurez[0] ? measurez[0] : 0)
+ var x1 = d3.scale.linear()
+ .domain([0, MaxX]).nice() // TODO: need to allow forceX and forceY, and xDomain, yDomain
+ .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;
+
+ //------------------------------------------------------------
+
+
+ //------------------------------------------------------------
+ // 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');
+
+ 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)) };
+
+
+ // 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), heightFromTop]
+ })
+ })
+ .on('mouseout', function(d,i) {
+ dispatch.elementMouseout({
+ value: d,
+ label: (i <= 0) ? 'Minimum' : (i >=1) ? 'Maximum' : 'Mean' //TODO: make these labels a variable
+ })
+ })
+
+ d3.transition(range)
+ .attr('x', reverse ? x1 : 0)
+ .attr('width', w1)
+ .attr('height', availableHeight);
+
+
+ // Update the measure rects.
+ var measure = g.selectAll('rect.nv-measure')
+ .data(measurez);
+
+ measure.enter().append('rect')
+ .attr('class', function(d, i) { return 'nv-measure nv-s' + i; })
+ .attr('width', w0)
+ .attr('height', availableHeight / 3)
+ .attr('x', reverse ? x0 : 0)
+ .attr('y', availableHeight / 3)
+ .on('mouseover', function(d) {
+ dispatch.elementMouseover({
+ value: d,
+ label: 'Current', //TODO: make these labels a variable
+ pos: [x1(d), heightFromTop]
+ })
+ })
+ .on('mouseout', function(d) {
+ dispatch.elementMouseout({
+ value: d,
+ label: 'Current' //TODO: make these labels a variable
+ })
+ })
+
+ d3.transition(measure)
+ .attr('width', w1)
+ .attr('height', availableHeight / 3)
+ .attr('x', reverse ? x1 : 0)
+ .attr('y', availableHeight / 3);
+
+
+
+ // Update the marker lines.
+ var marker = g.selectAll('path.nv-markerTriangle')
+ .data(markerz);
+
+ var h3 = availableHeight / 6;
+ marker.enter().append('path')
+ .attr('class', 'nv-markerTriangle')
+ .attr('transform', function(d) { return 'translate(' + x0(d) + ',' + (availableHeight / 2) + ')' })
+ .attr('d', 'M0,' + h3 + 'L' + h3 + ',' + (-h3) + ' ' + (-h3) + ',' + (-h3) + 'Z')
+ .on('mouseover', function(d,i) {
+ dispatch.elementMouseover({
+ value: d,
+ label: 'Previous',
+ pos: [x1(d), heightFromTop]
+ })
+ })
+ .on('mouseout', function(d,i) {
+ dispatch.elementMouseout({
+ value: d,
+ label: 'Previous'
+ })
+ });
+
+ d3.transition(marker)
+ .attr('transform', function(d) { return 'translate(' + x1(d) + ',' + (availableHeight / 2) + ')' });
+
+ marker.exit().remove();
+
+ });
+
+ d3.timer.flush();
+
+ return chart;
+ }
+
+
+ //============================================================
+ // Expose Public Variables
+ //------------------------------------------------------------
+
+ chart.dispatch = dispatch;
+
+ // left, right, top, bottom
+ chart.orient = function(_) {
+ if (!arguments.length) return orient;
+ orient = _;
+ reverse = orient == 'right' || orient == 'bottom';
+ return chart;
+ };
+
+ // ranges (bad, satisfactory, good)
+ chart.ranges = function(_) {
+ if (!arguments.length) return ranges;
+ ranges = _;
+ return chart;
+ };
+
+ // markers (previous, goal)
+ chart.markers = function(_) {
+ if (!arguments.length) return markers;
+ markers = _;
+ return chart;
+ };
+
+ // measures (actual, forecast)
+ chart.measures = function(_) {
+ if (!arguments.length) return measures;
+ measures = _;
+ return chart;
+ };
+
+ chart.forceX = function(_) {
+ if (!arguments.length) return forceX;
+ forceX = _;
+ 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.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.tickFormat = function(_) {
+ if (!arguments.length) return tickFormat;
+ tickFormat = _;
+ return chart;
+ };
+
+ //============================================================
+
+
+ return chart;
+};
+
+
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