mirror of
https://github.com/morrisjs/morris.js.git
synced 2024-09-21 10:41:32 +02:00
68aa4c36f2
Chart data points are sorted when using parseTime, so indices will not always match the original data ordering. Also fixes a couple of event triggers. Ref: #264.
408 lines
12 KiB
CoffeeScript
408 lines
12 KiB
CoffeeScript
class Morris.Line extends Morris.Grid
|
|
# Initialise the graph.
|
|
#
|
|
constructor: (options) ->
|
|
return new Morris.Line(options) unless (@ instanceof Morris.Line)
|
|
super(options)
|
|
|
|
init: ->
|
|
# Some instance variables for later
|
|
if @options.hideHover isnt 'always'
|
|
@hover = new Morris.Hover(parent: @el)
|
|
@on('hovermove', @onHoverMove)
|
|
@on('hoverout', @onHoverOut)
|
|
@on('gridclick', @onGridClick)
|
|
|
|
# Default configuration
|
|
#
|
|
defaults:
|
|
lineWidth: 3
|
|
pointSize: 4
|
|
lineColors: [
|
|
'#0b62a4'
|
|
'#7A92A3'
|
|
'#4da74d'
|
|
'#afd8f8'
|
|
'#edc240'
|
|
'#cb4b4b'
|
|
'#9440ed'
|
|
]
|
|
pointStrokeWidths: [1]
|
|
pointStrokeColors: ['#ffffff']
|
|
pointFillColors: []
|
|
smooth: true
|
|
xLabels: 'auto'
|
|
xLabelFormat: null
|
|
xLabelMargin: 24
|
|
continuousLine: true
|
|
hideHover: false
|
|
|
|
# Do any size-related calculations
|
|
#
|
|
# @private
|
|
calc: ->
|
|
@calcPoints()
|
|
@generatePaths()
|
|
|
|
# calculate series data point coordinates
|
|
#
|
|
# @private
|
|
calcPoints: ->
|
|
for row in @data
|
|
row._x = @transX(row.x)
|
|
row._y = for y in row.y
|
|
if y? then @transY(y) else y
|
|
row._ymax = Math.min [@bottom].concat(y for y in row._y when y?)...
|
|
|
|
# hit test - returns the index of the row at the given x-coordinate
|
|
#
|
|
hitTest: (x) ->
|
|
return null if @data.length == 0
|
|
# TODO better search algo
|
|
for r, index in @data.slice(1)
|
|
break if x < (r._x + @data[index]._x) / 2
|
|
index
|
|
|
|
# click on grid event handler
|
|
#
|
|
# @private
|
|
onGridClick: (x, y) =>
|
|
index = @hitTest(x)
|
|
@fire 'click', index, @data[index].src, x, y
|
|
|
|
# hover movement event handler
|
|
#
|
|
# @private
|
|
onHoverMove: (x, y) =>
|
|
index = @hitTest(x)
|
|
@displayHoverForRow(index)
|
|
|
|
# hover out event handler
|
|
#
|
|
# @private
|
|
onHoverOut: =>
|
|
if @options.hideHover isnt false
|
|
@displayHoverForRow(null)
|
|
|
|
# display a hover popup over the given row
|
|
#
|
|
# @private
|
|
displayHoverForRow: (index) ->
|
|
if index?
|
|
@hover.update(@hoverContentForRow(index)...)
|
|
@hilight(index)
|
|
else
|
|
@hover.hide()
|
|
@hilight()
|
|
|
|
# hover content for a point
|
|
#
|
|
# @private
|
|
hoverContentForRow: (index) ->
|
|
row = @data[index]
|
|
content = "<div class='morris-hover-row-label'>#{row.label}</div>"
|
|
for y, j in row.y
|
|
content += """
|
|
<div class='morris-hover-point' style='color: #{@colorFor(row, j, 'label')}'>
|
|
#{@options.labels[j]}:
|
|
#{@yLabelFormat(y)}
|
|
</div>
|
|
"""
|
|
if typeof @options.hoverCallback is 'function'
|
|
content = @options.hoverCallback(index, @options, content, row.src)
|
|
[content, row._x, row._ymax]
|
|
|
|
|
|
# generate paths for series lines
|
|
#
|
|
# @private
|
|
generatePaths: ->
|
|
@paths = for i in [0...@options.ykeys.length]
|
|
smooth = if typeof @options.smooth is "boolean" then @options.smooth else @options.ykeys[i] in @options.smooth
|
|
coords = ({x: r._x, y: r._y[i]} for r in @data when r._y[i] isnt undefined)
|
|
coords = (c for c in coords when c.y isnt null) if @options.continuousLine
|
|
|
|
if coords.length > 1
|
|
Morris.Line.createPath coords, smooth, @bottom
|
|
else
|
|
null
|
|
|
|
# Draws the line chart.
|
|
#
|
|
draw: ->
|
|
@drawXAxis() if @options.axes in [true, 'both', 'x']
|
|
@drawSeries()
|
|
if @options.hideHover is false
|
|
@displayHoverForRow(@data.length - 1)
|
|
|
|
# draw the x-axis labels
|
|
#
|
|
# @private
|
|
drawXAxis: ->
|
|
# draw x axis labels
|
|
ypos = @bottom + @options.padding / 2
|
|
prevLabelMargin = null
|
|
prevAngleMargin = null
|
|
drawLabel = (labelText, xpos) =>
|
|
label = @drawXAxisLabel(@transX(xpos), ypos, labelText)
|
|
textBox = label.getBBox()
|
|
label.transform("r#{-@options.xLabelAngle}")
|
|
labelBox = label.getBBox()
|
|
label.transform("t0,#{labelBox.height / 2}...")
|
|
if @options.xLabelAngle != 0
|
|
offset = -0.5 * textBox.width *
|
|
Math.cos(@options.xLabelAngle * Math.PI / 180.0)
|
|
label.transform("t#{offset},0...")
|
|
# try to avoid overlaps
|
|
labelBox = label.getBBox()
|
|
if (not prevLabelMargin? or
|
|
prevLabelMargin >= labelBox.x + labelBox.width or
|
|
prevAngleMargin? and prevAngleMargin >= labelBox.x) and
|
|
labelBox.x >= 0 and (labelBox.x + labelBox.width) < @el.width()
|
|
if @options.xLabelAngle != 0
|
|
margin = 1.25 * @options.gridTextSize /
|
|
Math.sin(@options.xLabelAngle * Math.PI / 180.0)
|
|
prevAngleMargin = labelBox.x - margin
|
|
prevLabelMargin = labelBox.x - @options.xLabelMargin
|
|
else
|
|
label.remove()
|
|
if @options.parseTime
|
|
if @data.length == 1 and @options.xLabels == 'auto'
|
|
# where there's only one value in the series, we can't make a
|
|
# sensible guess for an x labelling scheme, so just use the original
|
|
# column label
|
|
labels = [[@data[0].label, @data[0].x]]
|
|
else
|
|
labels = Morris.labelSeries(@xmin, @xmax, @width, @options.xLabels, @options.xLabelFormat)
|
|
else
|
|
labels = ([row.label, row.x] for row in @data)
|
|
labels.reverse()
|
|
for l in labels
|
|
drawLabel(l[0], l[1])
|
|
|
|
# draw the data series
|
|
#
|
|
# @private
|
|
drawSeries: ->
|
|
@seriesPoints = []
|
|
for i in [@options.ykeys.length-1..0]
|
|
@_drawLineFor i
|
|
for i in [@options.ykeys.length-1..0]
|
|
@_drawPointFor i
|
|
|
|
_drawPointFor: (index) ->
|
|
@seriesPoints[index] = []
|
|
for row in @data
|
|
circle = null
|
|
if row._y[index]?
|
|
circle = @drawLinePoint(row._x, row._y[index], @colorFor(row, index, 'point'), index)
|
|
@seriesPoints[index].push(circle)
|
|
|
|
_drawLineFor: (index) ->
|
|
path = @paths[index]
|
|
if path isnt null
|
|
@drawLinePath path, @colorFor(null, index, 'line'), index
|
|
|
|
# create a path for a data series
|
|
#
|
|
# @private
|
|
@createPath: (coords, smooth, bottom) ->
|
|
path = ""
|
|
grads = Morris.Line.gradients(coords) if smooth
|
|
|
|
prevCoord = {y: null}
|
|
for coord, i in coords
|
|
if coord.y?
|
|
if prevCoord.y?
|
|
if smooth
|
|
g = grads[i]
|
|
lg = grads[i - 1]
|
|
ix = (coord.x - prevCoord.x) / 4
|
|
x1 = prevCoord.x + ix
|
|
y1 = Math.min(bottom, prevCoord.y + ix * lg)
|
|
x2 = coord.x - ix
|
|
y2 = Math.min(bottom, coord.y - ix * g)
|
|
path += "C#{x1},#{y1},#{x2},#{y2},#{coord.x},#{coord.y}"
|
|
else
|
|
path += "L#{coord.x},#{coord.y}"
|
|
else
|
|
if not smooth or grads[i]?
|
|
path += "M#{coord.x},#{coord.y}"
|
|
prevCoord = coord
|
|
return path
|
|
|
|
# calculate a gradient at each point for a series of points
|
|
#
|
|
# @private
|
|
@gradients: (coords) ->
|
|
grad = (a, b) -> (a.y - b.y) / (a.x - b.x)
|
|
for coord, i in coords
|
|
if coord.y?
|
|
nextCoord = coords[i + 1] or {y: null}
|
|
prevCoord = coords[i - 1] or {y: null}
|
|
if prevCoord.y? and nextCoord.y?
|
|
grad(prevCoord, nextCoord)
|
|
else if prevCoord.y?
|
|
grad(prevCoord, coord)
|
|
else if nextCoord.y?
|
|
grad(coord, nextCoord)
|
|
else
|
|
null
|
|
else
|
|
null
|
|
|
|
# @private
|
|
hilight: (index) =>
|
|
if @prevHilight isnt null and @prevHilight isnt index
|
|
for i in [0..@seriesPoints.length-1]
|
|
if @seriesPoints[i][@prevHilight]
|
|
@seriesPoints[i][@prevHilight].animate @pointShrinkSeries(i)
|
|
if index isnt null and @prevHilight isnt index
|
|
for i in [0..@seriesPoints.length-1]
|
|
if @seriesPoints[i][index]
|
|
@seriesPoints[i][index].animate @pointGrowSeries(i)
|
|
@prevHilight = index
|
|
|
|
colorFor: (row, sidx, type) ->
|
|
if typeof @options.lineColors is 'function'
|
|
@options.lineColors.call(@, row, sidx, type)
|
|
else if type is 'point'
|
|
@options.pointFillColors[sidx % @options.pointFillColors.length] || @options.lineColors[sidx % @options.lineColors.length]
|
|
else
|
|
@options.lineColors[sidx % @options.lineColors.length]
|
|
|
|
drawXAxisLabel: (xPos, yPos, text) ->
|
|
@raphael.text(xPos, yPos, text)
|
|
.attr('font-size', @options.gridTextSize)
|
|
.attr('font-family', @options.gridTextFamily)
|
|
.attr('font-weight', @options.gridTextWeight)
|
|
.attr('fill', @options.gridTextColor)
|
|
|
|
drawLinePath: (path, lineColor, lineIndex) ->
|
|
@raphael.path(path)
|
|
.attr('stroke', lineColor)
|
|
.attr('stroke-width', @lineWidthForSeries(lineIndex))
|
|
|
|
drawLinePoint: (xPos, yPos, pointColor, lineIndex) ->
|
|
@raphael.circle(xPos, yPos, @pointSizeForSeries(lineIndex))
|
|
.attr('fill', pointColor)
|
|
.attr('stroke-width', @pointStrokeWidthForSeries(lineIndex))
|
|
.attr('stroke', @pointStrokeColorForSeries(lineIndex))
|
|
|
|
# @private
|
|
pointStrokeWidthForSeries: (index) ->
|
|
@options.pointStrokeWidths[index % @options.pointStrokeWidths.length]
|
|
|
|
# @private
|
|
pointStrokeColorForSeries: (index) ->
|
|
@options.pointStrokeColors[index % @options.pointStrokeColors.length]
|
|
|
|
# @private
|
|
lineWidthForSeries: (index) ->
|
|
if (@options.lineWidth instanceof Array)
|
|
@options.lineWidth[index % @options.lineWidth.length]
|
|
else
|
|
@options.lineWidth
|
|
|
|
# @private
|
|
pointSizeForSeries: (index) ->
|
|
if (@options.pointSize instanceof Array)
|
|
@options.pointSize[index % @options.pointSize.length]
|
|
else
|
|
@options.pointSize
|
|
|
|
# @private
|
|
pointGrowSeries: (index) ->
|
|
Raphael.animation r: @pointSizeForSeries(index) + 3, 25, 'linear'
|
|
|
|
# @private
|
|
pointShrinkSeries: (index) ->
|
|
Raphael.animation r: @pointSizeForSeries(index), 25, 'linear'
|
|
|
|
# generate a series of label, timestamp pairs for x-axis labels
|
|
#
|
|
# @private
|
|
Morris.labelSeries = (dmin, dmax, pxwidth, specName, xLabelFormat) ->
|
|
ddensity = 200 * (dmax - dmin) / pxwidth # seconds per `margin` pixels
|
|
d0 = new Date(dmin)
|
|
spec = Morris.LABEL_SPECS[specName]
|
|
# if the spec doesn't exist, search for the closest one in the list
|
|
if spec is undefined
|
|
for name in Morris.AUTO_LABEL_ORDER
|
|
s = Morris.LABEL_SPECS[name]
|
|
if ddensity >= s.span
|
|
spec = s
|
|
break
|
|
# if we run out of options, use second-intervals
|
|
if spec is undefined
|
|
spec = Morris.LABEL_SPECS["second"]
|
|
# check if there's a user-defined formatting function
|
|
if xLabelFormat
|
|
spec = $.extend({}, spec, {fmt: xLabelFormat})
|
|
# calculate labels
|
|
d = spec.start(d0)
|
|
ret = []
|
|
while (t = d.getTime()) <= dmax
|
|
if t >= dmin
|
|
ret.push [spec.fmt(d), t]
|
|
spec.incr(d)
|
|
return ret
|
|
|
|
# @private
|
|
minutesSpecHelper = (interval) ->
|
|
span: interval * 60 * 1000
|
|
start: (d) -> new Date(d.getFullYear(), d.getMonth(), d.getDate(), d.getHours())
|
|
fmt: (d) -> "#{Morris.pad2(d.getHours())}:#{Morris.pad2(d.getMinutes())}"
|
|
incr: (d) -> d.setUTCMinutes(d.getUTCMinutes() + interval)
|
|
|
|
# @private
|
|
secondsSpecHelper = (interval) ->
|
|
span: interval * 1000
|
|
start: (d) -> new Date(d.getFullYear(), d.getMonth(), d.getDate(), d.getHours(), d.getMinutes())
|
|
fmt: (d) -> "#{Morris.pad2(d.getHours())}:#{Morris.pad2(d.getMinutes())}:#{Morris.pad2(d.getSeconds())}"
|
|
incr: (d) -> d.setUTCSeconds(d.getUTCSeconds() + interval)
|
|
|
|
Morris.LABEL_SPECS =
|
|
"decade":
|
|
span: 172800000000 # 10 * 365 * 24 * 60 * 60 * 1000
|
|
start: (d) -> new Date(d.getFullYear() - d.getFullYear() % 10, 0, 1)
|
|
fmt: (d) -> "#{d.getFullYear()}"
|
|
incr: (d) -> d.setFullYear(d.getFullYear() + 10)
|
|
"year":
|
|
span: 17280000000 # 365 * 24 * 60 * 60 * 1000
|
|
start: (d) -> new Date(d.getFullYear(), 0, 1)
|
|
fmt: (d) -> "#{d.getFullYear()}"
|
|
incr: (d) -> d.setFullYear(d.getFullYear() + 1)
|
|
"month":
|
|
span: 2419200000 # 28 * 24 * 60 * 60 * 1000
|
|
start: (d) -> new Date(d.getFullYear(), d.getMonth(), 1)
|
|
fmt: (d) -> "#{d.getFullYear()}-#{Morris.pad2(d.getMonth() + 1)}"
|
|
incr: (d) -> d.setMonth(d.getMonth() + 1)
|
|
"week":
|
|
span: 604800000 # 7 * 24 * 60 * 60 * 1000
|
|
start: (d) -> new Date(d.getFullYear(), d.getMonth(), d.getDate())
|
|
fmt: (d) -> "#{d.getFullYear()}-#{Morris.pad2(d.getMonth() + 1)}-#{Morris.pad2(d.getDate())}"
|
|
incr: (d) -> d.setDate(d.getDate() + 7)
|
|
"day":
|
|
span: 86400000 # 24 * 60 * 60 * 1000
|
|
start: (d) -> new Date(d.getFullYear(), d.getMonth(), d.getDate())
|
|
fmt: (d) -> "#{d.getFullYear()}-#{Morris.pad2(d.getMonth() + 1)}-#{Morris.pad2(d.getDate())}"
|
|
incr: (d) -> d.setDate(d.getDate() + 1)
|
|
"hour": minutesSpecHelper(60)
|
|
"30min": minutesSpecHelper(30)
|
|
"15min": minutesSpecHelper(15)
|
|
"10min": minutesSpecHelper(10)
|
|
"5min": minutesSpecHelper(5)
|
|
"minute": minutesSpecHelper(1)
|
|
"30sec": secondsSpecHelper(30)
|
|
"15sec": secondsSpecHelper(15)
|
|
"10sec": secondsSpecHelper(10)
|
|
"5sec": secondsSpecHelper(5)
|
|
"second": secondsSpecHelper(1)
|
|
|
|
Morris.AUTO_LABEL_ORDER = [
|
|
"decade", "year", "month", "week", "day", "hour",
|
|
"30min", "15min", "10min", "5min", "minute",
|
|
"30sec", "15sec", "10sec", "5sec", "second"
|
|
]
|