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345 lines
9.8 KiB
JavaScript
345 lines
9.8 KiB
JavaScript
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nv.models.discreteBarChart = function() {
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"use strict";
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//============================================================
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// Public Variables with Default Settings
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//------------------------------------------------------------
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var discretebar = nv.models.discreteBar()
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, xAxis = nv.models.axis()
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, yAxis = nv.models.axis()
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;
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var margin = {top: 15, right: 10, bottom: 50, left: 60}
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, width = null
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, height = null
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, color = nv.utils.getColor()
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, showXAxis = true
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, showYAxis = true
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, rightAlignYAxis = false
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, staggerLabels = false
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, tooltips = true
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, tooltip = function(key, x, y, e, graph) {
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return '<h3>' + x + '</h3>' +
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'<p>' + y + '</p>'
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}
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, x
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, y
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, noData = "No Data Available."
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, dispatch = d3.dispatch('tooltipShow', 'tooltipHide', 'beforeUpdate')
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, transitionDuration = 250
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;
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xAxis
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.orient('bottom')
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.highlightZero(false)
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.showMaxMin(false)
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.tickFormat(function(d) { return d })
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;
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yAxis
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.orient((rightAlignYAxis) ? 'right' : 'left')
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.tickFormat(d3.format(',.1f'))
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;
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//============================================================
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//============================================================
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// Private Variables
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//------------------------------------------------------------
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var showTooltip = function(e, offsetElement) {
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var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
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top = e.pos[1] + ( offsetElement.offsetTop || 0),
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x = xAxis.tickFormat()(discretebar.x()(e.point, e.pointIndex)),
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y = yAxis.tickFormat()(discretebar.y()(e.point, e.pointIndex)),
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content = tooltip(e.series.key, x, y, e, chart);
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nv.tooltip.show([left, top], content, e.value < 0 ? 'n' : 's', null, offsetElement);
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};
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//============================================================
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function chart(selection) {
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selection.each(function(data) {
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var container = d3.select(this),
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that = this;
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var availableWidth = (width || parseInt(container.style('width')) || 960)
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- margin.left - margin.right,
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availableHeight = (height || parseInt(container.style('height')) || 400)
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- margin.top - margin.bottom;
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chart.update = function() {
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dispatch.beforeUpdate();
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container.transition().duration(transitionDuration).call(chart);
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};
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chart.container = this;
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//------------------------------------------------------------
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// Display No Data message if there's nothing to show.
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if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
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var noDataText = container.selectAll('.nv-noData').data([noData]);
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noDataText.enter().append('text')
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.attr('class', 'nvd3 nv-noData')
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.attr('dy', '-.7em')
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.style('text-anchor', 'middle');
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noDataText
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.attr('x', margin.left + availableWidth / 2)
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.attr('y', margin.top + availableHeight / 2)
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.text(function(d) { return d });
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return chart;
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} else {
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container.selectAll('.nv-noData').remove();
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}
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//------------------------------------------------------------
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//------------------------------------------------------------
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// Setup Scales
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x = discretebar.xScale();
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y = discretebar.yScale().clamp(true);
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//------------------------------------------------------------
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//------------------------------------------------------------
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// Setup containers and skeleton of chart
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var wrap = container.selectAll('g.nv-wrap.nv-discreteBarWithAxes').data([data]);
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var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-discreteBarWithAxes').append('g');
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var defsEnter = gEnter.append('defs');
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var g = wrap.select('g');
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gEnter.append('g').attr('class', 'nv-x nv-axis');
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gEnter.append('g').attr('class', 'nv-y nv-axis')
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.append('g').attr('class', 'nv-zeroLine')
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.append('line');
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gEnter.append('g').attr('class', 'nv-barsWrap');
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g.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
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if (rightAlignYAxis) {
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g.select(".nv-y.nv-axis")
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.attr("transform", "translate(" + availableWidth + ",0)");
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}
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//------------------------------------------------------------
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//------------------------------------------------------------
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// Main Chart Component(s)
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discretebar
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.width(availableWidth)
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.height(availableHeight);
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var barsWrap = g.select('.nv-barsWrap')
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.datum(data.filter(function(d) { return !d.disabled }))
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barsWrap.transition().call(discretebar);
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//------------------------------------------------------------
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defsEnter.append('clipPath')
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.attr('id', 'nv-x-label-clip-' + discretebar.id())
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.append('rect');
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g.select('#nv-x-label-clip-' + discretebar.id() + ' rect')
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.attr('width', x.rangeBand() * (staggerLabels ? 2 : 1))
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.attr('height', 16)
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.attr('x', -x.rangeBand() / (staggerLabels ? 1 : 2 ));
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//------------------------------------------------------------
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// Setup Axes
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if (showXAxis) {
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xAxis
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.scale(x)
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.ticks( availableWidth / 100 )
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.tickSize(-availableHeight, 0);
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g.select('.nv-x.nv-axis')
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.attr('transform', 'translate(0,' + (y.range()[0] + ((discretebar.showValues() && y.domain()[0] < 0) ? 16 : 0)) + ')');
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//d3.transition(g.select('.nv-x.nv-axis'))
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g.select('.nv-x.nv-axis').transition()
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.call(xAxis);
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var xTicks = g.select('.nv-x.nv-axis').selectAll('g');
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if (staggerLabels) {
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xTicks
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.selectAll('text')
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.attr('transform', function(d,i,j) { return 'translate(0,' + (j % 2 == 0 ? '5' : '17') + ')' })
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}
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}
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if (showYAxis) {
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yAxis
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.scale(y)
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.ticks( availableHeight / 36 )
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.tickSize( -availableWidth, 0);
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g.select('.nv-y.nv-axis').transition()
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.call(yAxis);
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}
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// Zero line
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g.select(".nv-zeroLine line")
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.attr("x1",0)
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.attr("x2",availableWidth)
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.attr("y1", y(0))
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.attr("y2", y(0))
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;
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//------------------------------------------------------------
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//============================================================
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// Event Handling/Dispatching (in chart's scope)
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//------------------------------------------------------------
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dispatch.on('tooltipShow', function(e) {
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if (tooltips) showTooltip(e, that.parentNode);
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});
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//============================================================
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});
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return chart;
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}
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//============================================================
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// Event Handling/Dispatching (out of chart's scope)
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//------------------------------------------------------------
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discretebar.dispatch.on('elementMouseover.tooltip', function(e) {
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e.pos = [e.pos[0] + margin.left, e.pos[1] + margin.top];
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dispatch.tooltipShow(e);
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});
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discretebar.dispatch.on('elementMouseout.tooltip', function(e) {
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dispatch.tooltipHide(e);
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});
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dispatch.on('tooltipHide', function() {
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if (tooltips) nv.tooltip.cleanup();
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});
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//============================================================
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//============================================================
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// Expose Public Variables
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//------------------------------------------------------------
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// expose chart's sub-components
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chart.dispatch = dispatch;
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chart.discretebar = discretebar;
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chart.xAxis = xAxis;
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chart.yAxis = yAxis;
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d3.rebind(chart, discretebar, 'x', 'y', 'xDomain', 'yDomain', 'xRange', 'yRange', 'forceX', 'forceY', 'id', 'showValues', 'valueFormat');
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chart.options = nv.utils.optionsFunc.bind(chart);
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chart.margin = function(_) {
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if (!arguments.length) return margin;
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margin.top = typeof _.top != 'undefined' ? _.top : margin.top;
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margin.right = typeof _.right != 'undefined' ? _.right : margin.right;
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margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
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margin.left = typeof _.left != 'undefined' ? _.left : margin.left;
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return chart;
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};
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chart.width = function(_) {
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if (!arguments.length) return width;
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width = _;
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return chart;
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};
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chart.height = function(_) {
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if (!arguments.length) return height;
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height = _;
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return chart;
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};
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chart.color = function(_) {
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if (!arguments.length) return color;
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color = nv.utils.getColor(_);
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discretebar.color(color);
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return chart;
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};
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chart.showXAxis = function(_) {
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if (!arguments.length) return showXAxis;
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showXAxis = _;
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return chart;
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};
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chart.showYAxis = function(_) {
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if (!arguments.length) return showYAxis;
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showYAxis = _;
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return chart;
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};
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chart.rightAlignYAxis = function(_) {
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if(!arguments.length) return rightAlignYAxis;
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rightAlignYAxis = _;
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yAxis.orient( (_) ? 'right' : 'left');
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return chart;
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};
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chart.staggerLabels = function(_) {
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if (!arguments.length) return staggerLabels;
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staggerLabels = _;
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return chart;
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};
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chart.tooltips = function(_) {
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if (!arguments.length) return tooltips;
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tooltips = _;
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return chart;
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};
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chart.tooltipContent = function(_) {
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if (!arguments.length) return tooltip;
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tooltip = _;
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return chart;
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};
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chart.noData = function(_) {
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if (!arguments.length) return noData;
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noData = _;
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return chart;
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};
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chart.transitionDuration = function(_) {
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if (!arguments.length) return transitionDuration;
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transitionDuration = _;
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return chart;
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};
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//============================================================
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return chart;
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}
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