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nvd3/src/models/linePlusBarWithFocusChart.js

657 lines
20 KiB
JavaScript

nv.models.linePlusBarWithFocusChart = function() {
"use strict";
//============================================================
// Public Variables with Default Settings
//------------------------------------------------------------
var lines = nv.models.line()
, lines2 = nv.models.line()
, bars = nv.models.historicalBar()
, bars2 = nv.models.historicalBar()
, xAxis = nv.models.axis()
, x2Axis = nv.models.axis()
, y1Axis = nv.models.axis()
, y2Axis = nv.models.axis()
, y3Axis = nv.models.axis()
, y4Axis = 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}
, width = null
, height = null
, height2 = 100
, getX = function(d) { return d.x }
, getY = function(d) { return d.y }
, color = nv.utils.defaultColor()
, showLegend = true
, extent
, brushExtent = null
, tooltips = true
, tooltip = function(key, x, y, e, graph) {
return '<h3>' + key + '</h3>' +
'<p>' + y + ' at ' + x + '</p>';
}
, x
, x2
, y1
, y2
, y3
, y4
, noData = "No Data Available."
, dispatch = d3.dispatch('tooltipShow', 'tooltipHide', 'brush')
, transitionDuration = 0
;
lines
.clipEdge(true)
;
lines2
.interactive(false)
;
xAxis
.orient('bottom')
.tickPadding(5)
;
y1Axis
.orient('left')
;
y2Axis
.orient('right')
;
x2Axis
.orient('bottom')
.tickPadding(5)
;
y3Axis
.orient('left')
;
y4Axis
.orient('right')
;
//============================================================
//============================================================
// Private Variables
//------------------------------------------------------------
var showTooltip = function(e, offsetElement) {
if (extent) {
e.pointIndex += Math.ceil(extent[0]);
}
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 = (e.series.bar ? y1Axis : y2Axis).tickFormat()(lines.y()(e.point, e.pointIndex)),
content = tooltip(e.series.key, x, y, e, chart);
nv.tooltip.show([left, top], content, e.value < 0 ? 'n' : 's', 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
var dataBars = data.filter(function(d) { return !d.disabled && d.bar });
var dataLines = data.filter(function(d) { return !d.bar }); // removed the !d.disabled clause here to fix Issue #240
x = bars.xScale();
x2 = x2Axis.scale();
y1 = bars.yScale();
y2 = lines.yScale();
y3 = bars2.yScale();
y4 = lines2.yScale();
var series1 = data
.filter(function(d) { return !d.disabled && d.bar })
.map(function(d) {
return d.values.map(function(d,i) {
return { x: getX(d,i), y: getY(d,i) }
})
});
var series2 = data
.filter(function(d) { return !d.disabled && !d.bar })
.map(function(d) {
return d.values.map(function(d,i) {
return { x: getX(d,i), y: getY(d,i) }
})
});
x .range([0, availableWidth]);
x2 .domain(d3.extent(d3.merge(series1.concat(series2)), function(d) { return d.x } ))
.range([0, availableWidth]);
//------------------------------------------------------------
//------------------------------------------------------------
// Setup containers and skeleton of chart
var wrap = container.selectAll('g.nv-wrap.nv-linePlusBar').data([data]);
var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-linePlusBar').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-y1 nv-axis');
focusEnter.append('g').attr('class', 'nv-y2 nv-axis');
focusEnter.append('g').attr('class', 'nv-barsWrap');
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-y1 nv-axis');
contextEnter.append('g').attr('class', 'nv-y2 nv-axis');
contextEnter.append('g').attr('class', 'nv-barsWrap');
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 / 2 );
g.select('.nv-legendWrap')
.datum(data.map(function(series) {
series.originalKey = series.originalKey === undefined ? series.key : series.originalKey;
series.key = series.originalKey + (series.bar ? ' (left axis)' : ' (right axis)');
return series;
}))
.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(' + ( availableWidth / 2 ) + ',' + (-margin.top) +')');
}
//------------------------------------------------------------
wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
//------------------------------------------------------------
// Context Components
bars2
.width(availableWidth)
.height(availableHeight2)
.color(data.map(function(d,i) {
return d.color || color(d, i);
}).filter(function(d,i) { return !data[i].disabled && data[i].bar }));
lines2
.width(availableWidth)
.height(availableHeight2)
.color(data.map(function(d,i) {
return d.color || color(d, i);
}).filter(function(d,i) { return !data[i].disabled && !data[i].bar }));
var bars2Wrap = g.select('.nv-context .nv-barsWrap')
.datum(dataBars.length ? dataBars : [{values:[]}]);
var lines2Wrap = g.select('.nv-context .nv-linesWrap')
.datum(!dataLines[0].disabled ? dataLines : [{values:[]}]);
g.select('.nv-context')
.attr('transform', 'translate(0,' + ( availableHeight1 + margin.bottom + margin2.top) + ')')
bars2Wrap.transition().call(bars2);
lines2Wrap.transition().call(lines2);
//------------------------------------------------------------
//------------------------------------------------------------
// Setup Brush
brush
.x(x2)
.on('brush', onBrush);
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);
//------------------------------------------------------------
//------------------------------------------------------------
// Setup Secondary (Context) Axes
x2Axis
.ticks( availableWidth / 100 )
.tickSize(-availableHeight2, 0);
g.select('.nv-context .nv-x.nv-axis')
.attr('transform', 'translate(0,' + y3.range()[0] + ')');
g.select('.nv-context .nv-x.nv-axis').transition()
.call(x2Axis);
y3Axis
.scale(y3)
.ticks( availableHeight2 / 36 )
.tickSize( -availableWidth, 0);
g.select('.nv-context .nv-y1.nv-axis')
.style('opacity', dataBars.length ? 1 : 0)
.attr('transform', 'translate(0,' + x2.range()[0] + ')');
g.select('.nv-context .nv-y1.nv-axis').transition()
.call(y3Axis);
y4Axis
.scale(y4)
.ticks( availableHeight2 / 36 )
.tickSize(dataBars.length ? 0 : -availableWidth, 0); // Show the y2 rules only if y1 has none
g.select('.nv-context .nv-y2.nv-axis')
.style('opacity', dataLines.length ? 1 : 0)
.attr('transform', 'translate(' + x2.range()[1] + ',0)');
g.select('.nv-context .nv-y2.nv-axis').transition()
.call(y4Axis);
//------------------------------------------------------------
//============================================================
// 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]) - x2.range()[0],
rightWidth = x2.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();
extent = brush.empty() ? x2.domain() : brush.extent();
dispatch.brush({extent: extent, brush: brush});
updateBrushBG();
//------------------------------------------------------------
// Prepare Main (Focus) Bars and Lines
bars
.width(availableWidth)
.height(availableHeight1)
.color(data.map(function(d,i) {
return d.color || color(d, i);
}).filter(function(d,i) { return !data[i].disabled && data[i].bar }));
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 && !data[i].bar }));
var focusBarsWrap = g.select('.nv-focus .nv-barsWrap')
.datum(!dataBars.length ? [{values:[]}] :
dataBars
.map(function(d,i) {
return {
key: d.key,
values: d.values.filter(function(d,i) {
return bars.x()(d,i) >= extent[0] && bars.x()(d,i) <= extent[1];
})
}
})
);
var focusLinesWrap = g.select('.nv-focus .nv-linesWrap')
.datum(dataLines[0].disabled ? [{values:[]}] :
dataLines
.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];
})
}
})
);
//------------------------------------------------------------
//------------------------------------------------------------
// Update Main (Focus) X Axis
if (dataBars.length) {
x = bars.xScale();
} else {
x = lines.xScale();
}
xAxis
.scale(x)
.ticks( availableWidth / 100 )
.tickSize(-availableHeight1, 0);
xAxis.domain([Math.ceil(extent[0]), Math.floor(extent[1])]);
g.select('.nv-x.nv-axis').transition().duration(transitionDuration)
.call(xAxis);
//------------------------------------------------------------
//------------------------------------------------------------
// Update Main (Focus) Bars and Lines
focusBarsWrap.transition().duration(transitionDuration).call(bars);
focusLinesWrap.transition().duration(transitionDuration).call(lines);
//------------------------------------------------------------
//------------------------------------------------------------
// Setup and Update Main (Focus) Y Axes
g.select('.nv-focus .nv-x.nv-axis')
.attr('transform', 'translate(0,' + y1.range()[0] + ')');
y1Axis
.scale(y1)
.ticks( availableHeight1 / 36 )
.tickSize(-availableWidth, 0);
g.select('.nv-focus .nv-y1.nv-axis')
.style('opacity', dataBars.length ? 1 : 0);
y2Axis
.scale(y2)
.ticks( availableHeight1 / 36 )
.tickSize(dataBars.length ? 0 : -availableWidth, 0); // Show the y2 rules only if y1 has none
g.select('.nv-focus .nv-y2.nv-axis')
.style('opacity', dataLines.length ? 1 : 0)
.attr('transform', 'translate(' + x.range()[1] + ',0)');
g.select('.nv-focus .nv-y1.nv-axis').transition().duration(transitionDuration)
.call(y1Axis);
g.select('.nv-focus .nv-y2.nv-axis').transition().duration(transitionDuration)
.call(y2Axis);
}
//============================================================
onBrush();
});
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);
});
bars.dispatch.on('elementMouseover.tooltip', function(e) {
e.pos = [e.pos[0] + margin.left, e.pos[1] + margin.top];
dispatch.tooltipShow(e);
});
bars.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.bars = bars;
chart.bars2 = bars2;
chart.xAxis = xAxis;
chart.x2Axis = x2Axis;
chart.y1Axis = y1Axis;
chart.y2Axis = y2Axis;
chart.y3Axis = y3Axis;
chart.y4Axis = y4Axis;
d3.rebind(chart, lines, 'defined', 'size', 'clipVoronoi', 'interpolate');
//TODO: consider rebinding x, y and some other stuff, and simply do soemthign lile bars.x(lines.x()), etc.
//d3.rebind(chart, lines, 'x', 'y', 'size', 'xDomain', 'yDomain', 'xRange', 'yRange', 'forceX', 'forceY', 'interactive', 'clipEdge', 'clipVoronoi', 'id');
chart.x = function(_) {
if (!arguments.length) return getX;
getX = _;
lines.x(_);
bars.x(_);
return chart;
};
chart.y = function(_) {
if (!arguments.length) return getY;
getY = _;
lines.y(_);
bars.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.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.tooltips = function(_) {
if (!arguments.length) return tooltips;
tooltips = _;
return chart;
};
chart.tooltipContent = function(_) {
if (!arguments.length) return tooltip;
tooltip = _;
return chart;
};
chart.noData = function(_) {
if (!arguments.length) return noData;
noData = _;
return chart;
};
chart.brushExtent = function(_) {
if (!arguments.length) return brushExtent;
brushExtent = _;
return chart;
};
//============================================================
return chart;
}