--- /dev/null
+nv.models.lineWithFocusChart = function() {
+ "use strict";
+ //============================================================
+ // Public Variables with Default Settings
+ //------------------------------------------------------------
+
+ var lines = nv.models.line()
+ , lines2 = nv.models.line()
+ , xAxis = nv.models.axis()
+ , yAxis = nv.models.axis()
+ , x2Axis = nv.models.axis()
+ , y2Axis = nv.models.axis()
+ , legend = nv.models.legend()
+ , brush = d3.svg.brush()
+ ;
+
+ var margin = {top: 30, right: 30, bottom: 30, left: 60}
+ , margin2 = {top: 0, right: 30, bottom: 20, left: 60}
+ , color = nv.utils.defaultColor()
+ , width = null
+ , height = null
+ , height2 = 100
+ , x
+ , y
+ , x2
+ , y2
+ , showLegend = true
+ , brushExtent = null
+ , tooltips = true
+ , tooltip = function(key, x, y, e, graph) {
+ return '<h3>' + key + '</h3>' +
+ '<p>' + y + ' at ' + x + '</p>'
+ }
+ , noData = "No Data Available."
+ , dispatch = d3.dispatch('tooltipShow', 'tooltipHide', 'brush')
+ , transitionDuration = 250
+ ;
+
+ lines
+ .clipEdge(true)
+ ;
+ lines2
+ .interactive(false)
+ ;
+ xAxis
+ .orient('bottom')
+ .tickPadding(5)
+ ;
+ yAxis
+ .orient('left')
+ ;
+ x2Axis
+ .orient('bottom')
+ .tickPadding(5)
+ ;
+ y2Axis
+ .orient('left')
+ ;
+ //============================================================
+
+
+ //============================================================
+ // Private Variables
+ //------------------------------------------------------------
+
+ var showTooltip = function(e, offsetElement) {
+ 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,
+ availableHeight1 = (height || parseInt(container.style('height')) || 400)
+ - margin.top - margin.bottom - height2,
+ availableHeight2 = height2 - margin2.top - margin2.bottom;
+
+ chart.update = function() { container.transition().duration(transitionDuration).call(chart) };
+ chart.container = this;
+
+
+ //------------------------------------------------------------
+ // Display No Data 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 + availableHeight1 / 2)
+ .text(function(d) { return d });
+
+ return chart;
+ } else {
+ container.selectAll('.nv-noData').remove();
+ }
+
+ //------------------------------------------------------------
+
+
+ //------------------------------------------------------------
+ // Setup Scales
+
+ x = lines.xScale();
+ y = lines.yScale();
+ x2 = lines2.xScale();
+ y2 = lines2.yScale();
+
+ //------------------------------------------------------------
+
+
+ //------------------------------------------------------------
+ // Setup containers and skeleton of chart
+
+ var wrap = container.selectAll('g.nv-wrap.nv-lineWithFocusChart').data([data]);
+ var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-lineWithFocusChart').append('g');
+ var g = wrap.select('g');
+
+ gEnter.append('g').attr('class', 'nv-legendWrap');
+
+ var focusEnter = gEnter.append('g').attr('class', 'nv-focus');
+ focusEnter.append('g').attr('class', 'nv-x nv-axis');
+ focusEnter.append('g').attr('class', 'nv-y nv-axis');
+ focusEnter.append('g').attr('class', 'nv-linesWrap');
+
+ var contextEnter = gEnter.append('g').attr('class', 'nv-context');
+ contextEnter.append('g').attr('class', 'nv-x nv-axis');
+ contextEnter.append('g').attr('class', 'nv-y nv-axis');
+ contextEnter.append('g').attr('class', 'nv-linesWrap');
+ contextEnter.append('g').attr('class', 'nv-brushBackground');
+ contextEnter.append('g').attr('class', 'nv-x nv-brush');
+
+ //------------------------------------------------------------
+
+
+ //------------------------------------------------------------
+ // Legend
+
+ if (showLegend) {
+ legend.width(availableWidth);
+
+ g.select('.nv-legendWrap')
+ .datum(data)
+ .call(legend);
+
+ if ( margin.top != legend.height()) {
+ margin.top = legend.height();
+ availableHeight1 = (height || parseInt(container.style('height')) || 400)
+ - margin.top - margin.bottom - height2;
+ }
+
+ g.select('.nv-legendWrap')
+ .attr('transform', 'translate(0,' + (-margin.top) +')')
+ }
+
+ //------------------------------------------------------------
+
+
+ wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
+
+
+ //------------------------------------------------------------
+ // Main Chart Component(s)
+
+ lines
+ .width(availableWidth)
+ .height(availableHeight1)
+ .color(
+ data
+ .map(function(d,i) {
+ return d.color || color(d, i);
+ })
+ .filter(function(d,i) {
+ return !data[i].disabled;
+ })
+ );
+
+ lines2
+ .defined(lines.defined())
+ .width(availableWidth)
+ .height(availableHeight2)
+ .color(
+ data
+ .map(function(d,i) {
+ return d.color || color(d, i);
+ })
+ .filter(function(d,i) {
+ return !data[i].disabled;
+ })
+ );
+
+ g.select('.nv-context')
+ .attr('transform', 'translate(0,' + ( availableHeight1 + margin.bottom + margin2.top) + ')')
+
+ var contextLinesWrap = g.select('.nv-context .nv-linesWrap')
+ .datum(data.filter(function(d) { return !d.disabled }))
+
+ d3.transition(contextLinesWrap).call(lines2);
+
+ //------------------------------------------------------------
+
+
+ /*
+ var focusLinesWrap = g.select('.nv-focus .nv-linesWrap')
+ .datum(data.filter(function(d) { return !d.disabled }))
+
+ d3.transition(focusLinesWrap).call(lines);
+ */
+
+
+ //------------------------------------------------------------
+ // Setup Main (Focus) Axes
+
+ xAxis
+ .scale(x)
+ .ticks( availableWidth / 100 )
+ .tickSize(-availableHeight1, 0);
+
+ yAxis
+ .scale(y)
+ .ticks( availableHeight1 / 36 )
+ .tickSize( -availableWidth, 0);
+
+ g.select('.nv-focus .nv-x.nv-axis')
+ .attr('transform', 'translate(0,' + availableHeight1 + ')');
+
+ //------------------------------------------------------------
+
+
+ //------------------------------------------------------------
+ // Setup Brush
+
+ brush
+ .x(x2)
+ .on('brush', function() {
+ //When brushing, turn off transitions because chart needs to change immediately.
+ var oldTransition = chart.transitionDuration();
+ chart.transitionDuration(0);
+ onBrush();
+ chart.transitionDuration(oldTransition);
+ });
+
+ if (brushExtent) brush.extent(brushExtent);
+
+ var brushBG = g.select('.nv-brushBackground').selectAll('g')
+ .data([brushExtent || brush.extent()])
+
+ var brushBGenter = brushBG.enter()
+ .append('g');
+
+ brushBGenter.append('rect')
+ .attr('class', 'left')
+ .attr('x', 0)
+ .attr('y', 0)
+ .attr('height', availableHeight2);
+
+ brushBGenter.append('rect')
+ .attr('class', 'right')
+ .attr('x', 0)
+ .attr('y', 0)
+ .attr('height', availableHeight2);
+
+ var gBrush = g.select('.nv-x.nv-brush')
+ .call(brush);
+ gBrush.selectAll('rect')
+ //.attr('y', -5)
+ .attr('height', availableHeight2);
+ gBrush.selectAll('.resize').append('path').attr('d', resizePath);
+
+ onBrush();
+
+ //------------------------------------------------------------
+
+
+ //------------------------------------------------------------
+ // Setup Secondary (Context) Axes
+
+ x2Axis
+ .scale(x2)
+ .ticks( availableWidth / 100 )
+ .tickSize(-availableHeight2, 0);
+
+ g.select('.nv-context .nv-x.nv-axis')
+ .attr('transform', 'translate(0,' + y2.range()[0] + ')');
+ d3.transition(g.select('.nv-context .nv-x.nv-axis'))
+ .call(x2Axis);
+
+
+ y2Axis
+ .scale(y2)
+ .ticks( availableHeight2 / 36 )
+ .tickSize( -availableWidth, 0);
+
+ d3.transition(g.select('.nv-context .nv-y.nv-axis'))
+ .call(y2Axis);
+
+ g.select('.nv-context .nv-x.nv-axis')
+ .attr('transform', 'translate(0,' + y2.range()[0] + ')');
+
+ //------------------------------------------------------------
+
+
+ //============================================================
+ // Event Handling/Dispatching (in chart's scope)
+ //------------------------------------------------------------
+
+ legend.dispatch.on('stateChange', function(newState) {
+ chart.update();
+ });
+
+ dispatch.on('tooltipShow', function(e) {
+ if (tooltips) showTooltip(e, that.parentNode);
+ });
+
+ //============================================================
+
+
+ //============================================================
+ // Functions
+ //------------------------------------------------------------
+
+ // Taken from crossfilter (http://square.github.com/crossfilter/)
+ function resizePath(d) {
+ var e = +(d == 'e'),
+ x = e ? 1 : -1,
+ y = availableHeight2 / 3;
+ return 'M' + (.5 * x) + ',' + y
+ + 'A6,6 0 0 ' + e + ' ' + (6.5 * x) + ',' + (y + 6)
+ + 'V' + (2 * y - 6)
+ + 'A6,6 0 0 ' + e + ' ' + (.5 * x) + ',' + (2 * y)
+ + 'Z'
+ + 'M' + (2.5 * x) + ',' + (y + 8)
+ + 'V' + (2 * y - 8)
+ + 'M' + (4.5 * x) + ',' + (y + 8)
+ + 'V' + (2 * y - 8);
+ }
+
+
+ function updateBrushBG() {
+ if (!brush.empty()) brush.extent(brushExtent);
+ brushBG
+ .data([brush.empty() ? x2.domain() : brushExtent])
+ .each(function(d,i) {
+ var leftWidth = x2(d[0]) - x.range()[0],
+ rightWidth = x.range()[1] - x2(d[1]);
+ d3.select(this).select('.left')
+ .attr('width', leftWidth < 0 ? 0 : leftWidth);
+
+ d3.select(this).select('.right')
+ .attr('x', x2(d[1]))
+ .attr('width', rightWidth < 0 ? 0 : rightWidth);
+ });
+ }
+
+
+ function onBrush() {
+ brushExtent = brush.empty() ? null : brush.extent();
+ var extent = brush.empty() ? x2.domain() : brush.extent();
+
+ //The brush extent cannot be less than one. If it is, don't update the line chart.
+ if (Math.abs(extent[0] - extent[1]) <= 1) {
+ return;
+ }
+
+ dispatch.brush({extent: extent, brush: brush});
+
+
+ updateBrushBG();
+
+ // Update Main (Focus)
+ var focusLinesWrap = g.select('.nv-focus .nv-linesWrap')
+ .datum(
+ data
+ .filter(function(d) { return !d.disabled })
+ .map(function(d,i) {
+ return {
+ key: d.key,
+ values: d.values.filter(function(d,i) {
+ return lines.x()(d,i) >= extent[0] && lines.x()(d,i) <= extent[1];
+ })
+ }
+ })
+ );
+ focusLinesWrap.transition().duration(transitionDuration).call(lines);
+
+
+ // Update Main (Focus) Axes
+ g.select('.nv-focus .nv-x.nv-axis').transition().duration(transitionDuration)
+ .call(xAxis);
+ g.select('.nv-focus .nv-y.nv-axis').transition().duration(transitionDuration)
+ .call(yAxis);
+ }
+
+ //============================================================
+
+
+ });
+
+ 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.legend = legend;
+ chart.lines = lines;
+ chart.lines2 = lines2;
+ chart.xAxis = xAxis;
+ chart.yAxis = yAxis;
+ chart.x2Axis = x2Axis;
+ chart.y2Axis = y2Axis;
+
+ d3.rebind(chart, lines, 'defined', 'isArea', 'size', 'xDomain', 'yDomain', 'xRange', 'yRange', 'forceX', 'forceY', 'interactive', 'clipEdge', 'clipVoronoi', 'id');
+
+ chart.options = nv.utils.optionsFunc.bind(chart);
+
+ chart.x = function(_) {
+ if (!arguments.length) return lines.x;
+ lines.x(_);
+ lines2.x(_);
+ return chart;
+ };
+
+ chart.y = function(_) {
+ if (!arguments.length) return lines.y;
+ lines.y(_);
+ lines2.y(_);
+ 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.margin2 = function(_) {
+ if (!arguments.length) return margin2;
+ margin2 = _;
+ 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.height2 = function(_) {
+ if (!arguments.length) return height2;
+ height2 = _;
+ 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.tooltips = function(_) {
+ if (!arguments.length) return tooltips;
+ tooltips = _;
+ return chart;
+ };
+
+ chart.tooltipContent = function(_) {
+ if (!arguments.length) return tooltip;
+ tooltip = _;
+ return chart;
+ };
+
+ chart.interpolate = function(_) {
+ if (!arguments.length) return lines.interpolate();
+ lines.interpolate(_);
+ lines2.interpolate(_);
+ return chart;
+ };
+
+ chart.noData = function(_) {
+ if (!arguments.length) return noData;
+ noData = _;
+ return chart;
+ };
+
+ // Chart has multiple similar Axes, to prevent code duplication, probably need to link all axis functions manually like below
+ chart.xTickFormat = function(_) {
+ if (!arguments.length) return xAxis.tickFormat();
+ xAxis.tickFormat(_);
+ x2Axis.tickFormat(_);
+ return chart;
+ };
+
+ chart.yTickFormat = function(_) {
+ if (!arguments.length) return yAxis.tickFormat();
+ yAxis.tickFormat(_);
+ y2Axis.tickFormat(_);
+ return chart;
+ };
+
+ chart.brushExtent = function(_) {
+ if (!arguments.length) return brushExtent;
+ brushExtent = _;
+ return chart;
+ };
+
+ chart.transitionDuration = function(_) {
+ if (!arguments.length) return transitionDuration;
+ transitionDuration = _;
+ return chart;
+ };
+
+ //============================================================
+
+
+ return chart;
+}
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