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376 lines
11 KiB
JavaScript
376 lines
11 KiB
JavaScript
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nv.models.lineWithFocusChart = function() {
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var margin = {top: 30, right: 20, bottom: 50, left: 60},
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margin2 = {top: 0, right: 20, bottom: 20, left: 60},
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color = d3.scale.category20().range(),
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width = null,
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height = null,
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height2 = 100,
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showLegend = true,
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tooltips = true,
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tooltip = function(key, x, y, e, graph) {
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return '<h3>' + key + '</h3>' +
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'<p>' + y + ' at ' + x + '</p>'
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};
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var lines = nv.models.line().clipEdge(true),
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lines2 = nv.models.line().interactive(false),
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x = lines.xScale(),
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y = lines.yScale(),
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x2 = lines2.xScale(),
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y2 = lines2.yScale(),
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xAxis = nv.models.axis().scale(x).orient('bottom'),
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yAxis = nv.models.axis().scale(y).orient('left'),
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x2Axis = nv.models.axis().scale(x2).orient('bottom'),
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y2Axis = nv.models.axis().scale(y2).orient('left'),
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legend = nv.models.legend().height(30),
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dispatch = d3.dispatch('tooltipShow', 'tooltipHide'),
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brush = d3.svg.brush().x(x2);
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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()(lines.x()(e.point)),
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y = yAxis.tickFormat()(lines.y()(e.point)),
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content = tooltip(e.series.key, x, y, e, chart);
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nv.tooltip.show([left, top], content);
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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 - height2,
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availableHeight2 = height2 - margin2.top - margin2.bottom;
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brush.on('brush', onBrush);
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var wrap = container.selectAll('g.wrap.lineWithFocusChart').data([data]);
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var gEnter = wrap.enter().append('g').attr('class', 'wrap nvd3 lineWithFocusChart').append('g');
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var focusEnter = gEnter.append('g').attr('class', 'focus');
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focusEnter.append('g').attr('class', 'x axis');
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focusEnter.append('g').attr('class', 'y axis');
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focusEnter.append('g').attr('class', 'linesWrap');
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var contextEnter = gEnter.append('g').attr('class', 'context');
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contextEnter.append('g').attr('class', 'x axis');
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contextEnter.append('g').attr('class', 'y axis');
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contextEnter.append('g').attr('class', 'linesWrap');
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contextEnter.append('g').attr('class', 'x brush');
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gEnter.append('g').attr('class', 'legendWrap');
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var g = wrap.select('g');
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if (showLegend) {
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legend.width(availableWidth);
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g.select('.legendWrap')
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.datum(data)
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.call(legend);
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if ( margin.top != legend.height()) {
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margin.top = legend.height();
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availableHeight = (height || parseInt(container.style('height')) || 400)
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- margin.top - margin.bottom;
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}
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g.select('.legendWrap')
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.attr('transform', 'translate(0,' + (-margin.top) +')')
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}
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lines
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.width(availableWidth)
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.height(availableHeight)
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.color(data.map(function(d,i) {
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return d.color || color[i % color.length];
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}).filter(function(d,i) {
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return !data[i].disabled;
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}));
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lines2
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.width(availableWidth)
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.height(availableHeight2)
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.color(data.map(function(d,i) {
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return d.color || color[i % color.length];
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}).filter(function(d,i) {
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return !data[i].disabled;
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}));
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g.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
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var focusLinesWrap = g.select('.focus .linesWrap')
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.datum(data.filter(function(d) { return !d.disabled }))
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d3.transition(focusLinesWrap).call(lines);
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xAxis
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.ticks( availableWidth / 100 )
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.tickSize(-availableHeight, 0);
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g.select('.focus .x.axis')
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.attr('transform', 'translate(0,' + y.range()[0] + ')');
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d3.transition(g.select('.focus .x.axis'))
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.call(xAxis);
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yAxis
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.ticks( availableHeight / 36 )
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.tickSize( -availableWidth, 0);
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d3.transition(g.select('.focus .y.axis'))
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.call(yAxis);
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g.select('.context')
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.attr('transform', 'translate(0,' + ( availableHeight + margin.bottom + margin2.top) + ')')
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var contextLinesWrap = g.select('.context .linesWrap')
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.datum(data.filter(function(d) { return !d.disabled }))
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d3.transition(contextLinesWrap).call(lines2);
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gBrush = g.select('.x.brush')
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.call(brush);
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gBrush.selectAll('rect')
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//.attr('y', -5)
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.attr('height', availableHeight2);
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gBrush.selectAll(".resize").append("path").attr("d", resizePath);
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x2Axis
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.ticks( availableWidth / 100 )
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.tickSize(-availableHeight2, 0);
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g.select('.context .x.axis')
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.attr('transform', 'translate(0,' + y2.range()[0] + ')');
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d3.transition(g.select('.context .x.axis'))
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.call(x2Axis);
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y2Axis
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.ticks( availableHeight2 / 36 )
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.tickSize( -availableWidth, 0);
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d3.transition(g.select('.context .y.axis'))
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.call(y2Axis);
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updateFocus();
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legend.dispatch.on('legendClick', function(d,i) {
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d.disabled = !d.disabled;
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if (!data.filter(function(d) { return !d.disabled }).length) {
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data.map(function(d) {
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d.disabled = false;
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wrap.selectAll('.series').classed('disabled', false);
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return d;
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});
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}
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selection.transition().call(chart);
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});
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/*
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//
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legend.dispatch.on('legendMouseover', function(d, i) {
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d.hover = true;
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selection.transition().call(chart)
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});
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legend.dispatch.on('legendMouseout', function(d, i) {
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d.hover = false;
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selection.transition().call(chart)
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});
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*/
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lines.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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if (tooltips) dispatch.on('tooltipShow', function(e) { showTooltip(e, that.parentNode) } ); // TODO: maybe merge with above?
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lines.dispatch.on('elementMouseout.tooltip', function(e) {
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dispatch.tooltipHide(e);
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});
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if (tooltips) dispatch.on('tooltipHide', nv.tooltip.cleanup);
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// Taken from crossfilter (http://square.github.com/crossfilter/)
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function resizePath(d) {
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var e = +(d == "e"),
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x = e ? 1 : -1,
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y = availableHeight2 / 3;
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return "M" + (.5 * x) + "," + y
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+ "A6,6 0 0 " + e + " " + (6.5 * x) + "," + (y + 6)
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+ "V" + (2 * y - 6)
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+ "A6,6 0 0 " + e + " " + (.5 * x) + "," + (2 * y)
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+ "Z"
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+ "M" + (2.5 * x) + "," + (y + 8)
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+ "V" + (2 * y - 8)
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+ "M" + (4.5 * x) + "," + (y + 8)
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+ "V" + (2 * y - 8);
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}
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function onBrush() {
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updateFocus();
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focusLinesWrap.call(lines)
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//var focusLinesWrap = g.select('.focus .linesWrap')
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g.select('.focus .x.axis').call(xAxis);
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g.select('.focus .y.axis').call(yAxis);
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}
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function updateFocus() {
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var yDomain = brush.empty() ? y2.domain() : d3.extent(d3.merge(data.filter(function(d) { return !d.disabled }).map(function(d) { return d.values })).filter(function(d) {
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return lines.x()(d) >= brush.extent()[0] && lines.x()(d) <= brush.extent()[1];
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}), lines.y()); //This doesn't account for the 1 point before and the 1 point after the domain. Would fix, but likely need to change entire methodology here
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if (typeof yDomain[0] == 'undefined') yDomain = y2.domain(); //incase the brush doesn't cover a single point
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x.domain(brush.empty() ? x2.domain() : brush.extent());
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y.domain(yDomain);
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//TODO: Rethink this... performance is horrible, likely need to cut off focus data to within the range
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// If I limit the data for focusLines would want to include 1 point before and after the extent,
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// Need to figure out an optimized way to accomplish this.
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// ***One concern is to try not to make the assumption that all lines are of the same length, and
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// points with the same index have the same x value (while this is true in our test cases, may
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// not always be)
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lines.xDomain(x.domain());
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lines.yDomain(y.domain());
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}
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});
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//TODO: decide if this is a good idea, and if it should be in all models
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chart.update = function() { chart(selection) };
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return chart;
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}
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chart.dispatch = dispatch;
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chart.legend = legend;
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chart.xAxis = xAxis;
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chart.yAxis = yAxis;
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d3.rebind(chart, lines, 'size', 'xDomain', 'yDomain', 'forceX', 'forceY', 'interactive', 'clipEdge', 'clipVoronoi', 'id');
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chart.x = function(_) {
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if (!arguments.length) return lines.x;
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lines.x(_);
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lines2.x(_);
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return chart;
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};
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chart.y = function(_) {
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if (!arguments.length) return lines.y;
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lines.y(_);
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lines2.y(_);
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return chart;
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};
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// TODO: do the other d3.rebind() items for lines->chart like .x() and .y() above:
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// if you don't, then the bottom section (lines2) won't see the user changes
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// going through these calls.
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chart.margin = function(_) {
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if (!arguments.length) return margin;
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margin = _;
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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 = _;
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legend.color(_);
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return chart;
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};
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chart.showLegend = function(_) {
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if (!arguments.length) return showLegend;
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showLegend = _;
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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 has multiple similar Axes, to prevent code duplication, probably need to link all axis functions manually like below
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chart.xTickFormat = function(_) {
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if (!arguments.length) return xAxis.tickFormat();
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xAxis.tickFormat(_);
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x2Axis.tickFormat(_);
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return chart;
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};
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chart.yTickFormat = function(_) {
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if (!arguments.length) return yAxis.tickFormat();
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yAxis.tickFormat(_);
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y2Axis.tickFormat(_);
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return chart;
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};
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return chart;
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}
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