nv.models.lineChart = function() { //============================================================ // Public Variables with Default Settings //------------------------------------------------------------ var lines = nv.models.line() , xAxis = nv.models.axis() , yAxis = nv.models.axis() , legend = nv.models.legend() ; //set margin.right to 23 to fit dates on the x-axis within the chart var margin = {top: 30, right: 20, bottom: 50, left: 60} , color = nv.utils.defaultColor() , width = null , height = null , showLegend = true , showXAxis = true , showYAxis = true , rightAlignYAxis = false , tooltips = true , tooltip = function(key, x, y, e, graph) { return '
' + y + ' at ' + x + '
' } , x , y , state = {} , defaultState = null , noData = 'No Data Available.' , dispatch = d3.dispatch('tooltipShow', 'tooltipHide', 'stateChange', 'changeState') ; xAxis .orient('bottom') .tickPadding(7) ; yAxis .orient((rightAlignYAxis) ? 'right' : 'left') ; //============================================================ //============================================================ // Private Variables //------------------------------------------------------------ var showTooltip = function(e, offsetElement) { // New addition to calculate position if SVG is scaled with viewBox, may move TODO: consider implementing everywhere else if (offsetElement) { var svg = d3.select(offsetElement).select('svg'); var viewBox = (svg.node()) ? svg.attr('viewBox') : null; if (viewBox) { viewBox = viewBox.split(' '); var ratio = parseInt(svg.style('width')) / viewBox[2]; e.pos[0] = e.pos[0] * ratio; e.pos[1] = e.pos[1] * ratio; } } var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ), top = e.pos[1] + ( offsetElement.offsetTop || 0), x = xAxis.tickFormat()(lines.x()(e.point, e.pointIndex)), y = yAxis.tickFormat()(lines.y()(e.point, e.pointIndex)), content = tooltip(e.series.key, x, y, e, chart); nv.tooltip.show([left, top], content, null, null, offsetElement); }; //============================================================ function chart(selection) { selection.each(function(data) { var container = d3.select(this), that = this; var availableWidth = (width || parseInt(container.style('width')) || 960) - margin.left - margin.right, availableHeight = (height || parseInt(container.style('height')) || 400) - margin.top - margin.bottom; chart.update = function() { container.transition().call(chart) }; chart.container = this; //set state.disabled 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 noData message if there's nothing to show. if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) { var noDataText = container.selectAll('.nv-noData').data([noData]); noDataText.enter().append('text') .attr('class', 'nvd3 nv-noData') .attr('dy', '-.7em') .style('text-anchor', 'middle'); noDataText .attr('x', margin.left + availableWidth / 2) .attr('y', margin.top + availableHeight / 2) .text(function(d) { return d }); return chart; } else { container.selectAll('.nv-noData').remove(); } //------------------------------------------------------------ //------------------------------------------------------------ // Setup Scales x = lines.xScale(); y = lines.yScale(); //------------------------------------------------------------ //------------------------------------------------------------ // Setup containers and skeleton of chart var wrap = container.selectAll('g.nv-wrap.nv-lineChart').data([data]); var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-lineChart').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'); gEnter.append('g').attr('class', 'nv-linesWrap'); gEnter.append('g').attr('class', 'nv-legendWrap'); //------------------------------------------------------------ //------------------------------------------------------------ // Legend if (showLegend) { legend.width(availableWidth); g.select('.nv-legendWrap') .datum(data) .call(legend); if ( margin.top != legend.height()) { margin.top = legend.height(); availableHeight = (height || parseInt(container.style('height')) || 400) - margin.top - margin.bottom; } wrap.select('.nv-legendWrap') .attr('transform', 'translate(0,' + (-margin.top) +')') } //------------------------------------------------------------ wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')'); if (rightAlignYAxis) { g.select(".nv-y.nv-axis") .attr("transform", "translate(" + availableWidth + ",0)"); } //------------------------------------------------------------ // Main Chart Component(s) lines .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 linesWrap = g.select('.nv-linesWrap') .datum(data.filter(function(d) { return !d.disabled })) d3.transition(linesWrap).call(lines); //------------------------------------------------------------ //------------------------------------------------------------ // Setup Axes if (showXAxis) { xAxis .scale(x) .ticks( availableWidth / 100 ) .tickSize(-availableHeight, 0); g.select('.nv-x.nv-axis') .attr('transform', 'translate(0,' + y.range()[0] + ')'); d3.transition(g.select('.nv-x.nv-axis')) .call(xAxis); } if (showYAxis) { yAxis .scale(y) .ticks( availableHeight / 36 ) .tickSize( -availableWidth, 0); d3.transition(g.select('.nv-y.nv-axis')) .call(yAxis); } //------------------------------------------------------------ //============================================================ // Event Handling/Dispatching (in chart's scope) //------------------------------------------------------------ legend.dispatch.on('legendClick', function(d,i) { d.disabled = !d.disabled; if (!data.filter(function(d) { return !d.disabled }).length) { data.map(function(d) { d.disabled = false; wrap.selectAll('.nv-series').classed('disabled', false); return d; }); } state.disabled = data.map(function(d) { return !!d.disabled }); dispatch.stateChange(state); // container.transition().call(chart); chart.update(); }); legend.dispatch.on('legendDblclick', function(d) { //Double clicking should always enable current series, and disabled all others. data.forEach(function(d) { d.disabled = true; }); d.disabled = false; state.disabled = data.map(function(d) { return !!d.disabled }); dispatch.stateChange(state); chart.update(); }); /* legend.dispatch.on('legendMouseover', function(d, i) { d.hover = true; selection.transition().call(chart) }); legend.dispatch.on('legendMouseout', function(d, i) { d.hover = false; selection.transition().call(chart) }); */ dispatch.on('tooltipShow', function(e) { if (tooltips) showTooltip(e, that.parentNode); }); dispatch.on('changeState', function(e) { if (typeof e.disabled !== 'undefined') { data.forEach(function(series,i) { series.disabled = e.disabled[i]; }); state.disabled = e.disabled; } chart.update(); }); //============================================================ }); return chart; } //============================================================ // Event Handling/Dispatching (out of chart's scope) //------------------------------------------------------------ lines.dispatch.on('elementMouseover.tooltip', function(e) { e.pos = [e.pos[0] + margin.left, e.pos[1] + margin.top]; dispatch.tooltipShow(e); }); lines.dispatch.on('elementMouseout.tooltip', function(e) { dispatch.tooltipHide(e); }); dispatch.on('tooltipHide', function() { if (tooltips) nv.tooltip.cleanup(); }); //============================================================ //============================================================ // Expose Public Variables //------------------------------------------------------------ // expose chart's sub-components chart.dispatch = dispatch; chart.lines = lines; chart.legend = legend; chart.xAxis = xAxis; chart.yAxis = yAxis; d3.rebind(chart, lines, 'defined', 'isArea', 'x', 'y', 'size', 'xScale', 'yScale', 'xDomain', 'yDomain', 'forceX', 'forceY', 'interactive', 'clipEdge', 'clipVoronoi', 'id', 'interpolate'); 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.color = function(_) { if (!arguments.length) return color; color = nv.utils.getColor(_); legend.color(color); return chart; }; chart.showLegend = function(_) { if (!arguments.length) return showLegend; showLegend = _; return chart; }; chart.showXAxis = function(_) { if (!arguments.length) return showXAxis; showXAxis = _; return chart; }; chart.showYAxis = function(_) { if (!arguments.length) return showYAxis; showYAxis = _; return chart; }; chart.rightAlignYAxis = function(_) { if(!arguments.length) return rightAlignYAxis; rightAlignYAxis = _; yAxis.orient( (_) ? 'right' : 'left'); return chart; }; chart.tooltips = function(_) { if (!arguments.length) return tooltips; tooltips = _; return chart; }; chart.tooltipContent = function(_) { if (!arguments.length) return tooltip; tooltip = _; return chart; }; chart.state = function(_) { if (!arguments.length) return state; state = _; return chart; }; chart.defaultState = function(_) { if (!arguments.length) return defaultState; defaultState = _; return chart; }; chart.noData = function(_) { if (!arguments.length) return noData; noData = _; return chart; }; //============================================================ return chart; }