mirror of
https://github.com/morrisjs/morris.js.git
synced 2024-11-14 07:41:11 +01:00
507 lines
16 KiB
CoffeeScript
507 lines
16 KiB
CoffeeScript
# The original line graph.
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#
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$ = jQuery
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Morris = {}
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class Morris.Line
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# Initialise the graph.
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#
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# @param {Object} options
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constructor: (options) ->
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if not (this instanceof Morris.Line)
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return new Morris.Line(options)
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if typeof options.element is 'string'
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@el = $ document.getElementById(options.element)
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else
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@el = $ options.element
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@options = $.extend {}, @defaults, options
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# bail if there's no data
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if @options.data is undefined or @options.data.length is 0
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return
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@el.addClass 'graph-initialised'
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@precalc()
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@redraw()
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# Default configuration
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#
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defaults:
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lineWidth: 3
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pointSize: 4
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lineColors: [
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'#0b62a4'
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'#7A92A3'
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'#4da74d'
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'#afd8f8'
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'#edc240'
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'#cb4b4b'
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'#9440ed'
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]
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ymax: 'auto'
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ymin: 'auto 0'
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marginTop: 25
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marginRight: 25
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marginBottom: 30
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marginLeft: 25
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numLines: 5
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gridLineColor: '#aaa'
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gridTextColor: '#888'
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gridTextSize: 12
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gridStrokeWidth: 0.5
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hoverPaddingX: 10
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hoverPaddingY: 5
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hoverMargin: 10
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hoverFillColor: '#fff'
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hoverBorderColor: '#ccc'
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hoverBorderWidth: 2
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hoverOpacity: 0.95
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hoverLabelColor: '#444'
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hoverFontSize: 12
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smooth: true
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hideHover: false
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parseTime: true
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units: ''
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dateFormat: (x) -> new Date(x).toString()
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# Do any necessary pre-processing for a new dataset
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#
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precalc: ->
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# sort data
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@options.data.sort (a, b) => (a[@options.xkey] < b[@options.xkey]) - (b[@options.xkey] < a[@options.xkey])
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# extract labels
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@columnLabels = $.map @options.data, (d) => d[@options.xkey]
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@seriesLabels = @options.labels
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# extract series data
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@series = []
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for ykey in @options.ykeys
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series_data = []
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for d in @options.data
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series_data.push(d[ykey])
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@series.push(series_data)
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# translate x labels into nominal dates
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# note: currently using decimal years to specify dates
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if @options.parseTime
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@xvals = $.map @columnLabels, (x) -> Morris.parseDate x
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else
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@xvals = [(@columnLabels.length-1)..0]
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# translate column labels, if they're timestamps
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if @options.parseTime
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@columnLabels = $.map @columnLabels, (d) =>
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if typeof d is 'number'
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@options.dateFormat(d)
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else
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d
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@xmin = Math.min.apply null, @xvals
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@xmax = Math.max.apply null, @xvals
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if @xmin is @xmax
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@xmin -= 1
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@xmax += 1
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# Compute the vertical range of the graph if desired
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if typeof @options.ymax is 'string' and @options.ymax[0..3] is 'auto'
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# use Array.concat to flatten arrays and find the max y value
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ymax = Math.max.apply null, Array.prototype.concat.apply([], @series)
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if @options.ymax.length > 5
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@options.ymax = Math.max parseInt(@options.ymax[5..], 10), ymax
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else
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@options.ymax = ymax
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if typeof @options.ymin is 'string' and @options.ymin[0..3] is 'auto'
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ymin = Math.min.apply null, Array.prototype.concat.apply([], @series)
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if @options.ymin.length > 5
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@options.ymin = Math.min parseInt(@options.ymin[5..], 10), ymin
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else
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@options.ymin = ymin
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# Some instance variables for later
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@pointGrow = Raphael.animation r: @options.pointSize + 3, 25, 'linear'
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@pointShrink = Raphael.animation r: @options.pointSize, 25, 'linear'
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@elementWidth = null
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@elementHeight = null
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# column hilight events
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@prevHilight = null
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@el.mousemove (evt) =>
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@updateHilight evt.pageX
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if @options.hideHover
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@el.mouseout (evt) =>
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@hilight null
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touchHandler = (evt) =>
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touch = evt.originalEvent.touches[0] or evt.originalEvent.changedTouches[0]
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@updateHilight touch.pageX
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return touch
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@el.bind 'touchstart', touchHandler
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@el.bind 'touchmove', touchHandler
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@el.bind 'touchend', touchHandler
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# Do any size-related calculations
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#
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calc: ->
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w = @el.width()
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h = @el.height()
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if @elementWidth != w or @elementHeight != h
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# calculate grid dimensions
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@maxYLabelWidth = Math.max(
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@measureText(@options.ymin + @options.units, @options.gridTextSize).width,
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@measureText(@options.ymax + @options.units, @options.gridTextSize).width)
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@left = @maxYLabelWidth + @options.marginLeft
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@width = @el.width() - @left - @options.marginRight
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@height = @el.height() - @options.marginTop - @options.marginBottom
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@dx = @width / (@xmax - @xmin)
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@dy = @height / (@options.ymax - @options.ymin)
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# calculate series data point coordinates
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@columns = (@transX(x) for x in @xvals)
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@seriesCoords = []
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for s in @series
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scoords = []
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$.each s, (i, y) =>
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if y == null
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scoords.push(null)
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else
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scoords.push(x: @columns[i], y: @transY(y))
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@seriesCoords.push(scoords)
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# calculate hover margins
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@hoverMargins = $.map @columns.slice(1), (x, i) => (x + @columns[i]) / 2
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# quick translation helpers
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#
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transX: (x) =>
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if @xvals.length is 1
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@left + @width / 2
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else
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@left + (x - @xmin) * @dx
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transY: (y) =>
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return @options.marginTop + @height - (y - @options.ymin) * @dy
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# Clear and redraw the graph
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#
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redraw: ->
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# remove child elements (get rid of old drawings)
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@el.empty()
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# the raphael drawing instance
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@r = new Raphael(@el[0])
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@calc()
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@drawGrid()
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@drawSeries()
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@drawHover()
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@hilight(if @options.hideHover then null else 0)
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# draw the grid, and axes labels
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#
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drawGrid: ->
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# draw y axis labels, horizontal lines
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yInterval = (@options.ymax - @options.ymin) / (@options.numLines - 1)
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firstY = Math.ceil(@options.ymin / yInterval) * yInterval
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lastY = Math.floor(@options.ymax / yInterval) * yInterval
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for lineY in [firstY..lastY] by yInterval
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v = Math.floor(lineY)
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y = @transY(v)
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@r.text(@left - @options.marginLeft/2, y, Morris.commas(v) + @options.units)
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.attr('font-size', @options.gridTextSize)
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.attr('fill', @options.gridTextColor)
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.attr('text-anchor', 'end')
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@r.path("M#{@left},#{y}H#{@left + @width}")
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.attr('stroke', @options.gridLineColor)
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.attr('stroke-width', @options.gridStrokeWidth)
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## draw x axis labels
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ypos = @options.marginTop + @height + @options.marginBottom / 2
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xLabelMargin = 50 # make this an option?
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prevLabelMargin = null
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drawLabel = (labelText, xpos) =>
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label = @r.text(@transX(xpos), ypos, labelText)
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.attr('font-size', @options.gridTextSize)
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.attr('fill', @options.gridTextColor)
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labelBox = label.getBBox()
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# ensure a minimum of `xLabelMargin` pixels between labels
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if prevLabelMargin is null or prevLabelMargin <= labelBox.x
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prevLabelMargin = labelBox.x + labelBox.width + xLabelMargin
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else
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label.remove()
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if @options.parseTime
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for l in Morris.labelSeries(@xmin, @xmax, @width, xLabelMargin)
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drawLabel(l[0], l[1])
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else
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for i in [0..@columnLabels.length]
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labelText = @columnLabels[@columnLabels.length - i - 1]
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drawLabel(labelText, i)
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# draw the data series
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#
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drawSeries: ->
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for i in [@seriesCoords.length-1..0]
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coords = @seriesCoords[i]
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if coords.length > 1
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path = @createPath coords, @options.marginTop, @left, @options.marginTop + @height, @left + @width
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@r.path(path)
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.attr('stroke', @options.lineColors[i])
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.attr('stroke-width', @options.lineWidth)
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@seriesPoints = ([] for i in [0..@seriesCoords.length-1])
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for i in [@seriesCoords.length-1..0]
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for c in @seriesCoords[i]
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if c == null
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circle = null
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else
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circle = @r.circle(c.x, c.y, @options.pointSize)
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.attr('fill', @options.lineColors[i])
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.attr('stroke-width', 1)
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.attr('stroke', '#ffffff')
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@seriesPoints[i].push(circle)
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# create a path for a data series
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#
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createPath: (all_coords, top, left, bottom, right) ->
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path = ""
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coords = $.map(all_coords, (c) -> c)
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if @options.smooth
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grads = @gradients coords
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for i in [0..coords.length-1]
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c = coords[i]
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if i is 0
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path += "M#{c.x},#{c.y}"
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else
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g = grads[i]
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lc = coords[i - 1]
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lg = grads[i - 1]
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ix = (c.x - lc.x) / 4
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x1 = lc.x + ix
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y1 = Math.min(bottom, lc.y + ix * lg)
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x2 = c.x - ix
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y2 = Math.min(bottom, c.y - ix * g)
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path += "C#{x1},#{y1},#{x2},#{y2},#{c.x},#{c.y}"
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else
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path = "M" + $.map(coords, (c) -> "#{c.x},#{c.y}").join("L")
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return path
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# calculate a gradient at each point for a series of points
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#
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gradients: (coords) ->
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$.map coords, (c, i) ->
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if i is 0
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(coords[1].y - c.y) / (coords[1].x - c.x)
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else if i is (coords.length - 1)
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(c.y - coords[i - 1].y) / (c.x - coords[i - 1].x)
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else
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(coords[i + 1].y - coords[i - 1].y) / (coords[i + 1].x - coords[i - 1].x)
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# draw the hover tooltip
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#
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drawHover: ->
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# hover labels
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@hoverHeight = @options.hoverFontSize * 1.5 * (@series.length + 1)
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@hover = @r.rect(-10, -@hoverHeight / 2 - @options.hoverPaddingY, 20, @hoverHeight + @options.hoverPaddingY * 2, 10)
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.attr('fill', @options.hoverFillColor)
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.attr('stroke', @options.hoverBorderColor)
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.attr('stroke-width', @options.hoverBorderWidth)
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.attr('opacity', @options.hoverOpacity)
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@xLabel = @r.text(0, (@options.hoverFontSize * 0.75) - @hoverHeight / 2, '')
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.attr('fill', @options.hoverLabelColor)
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.attr('font-weight', 'bold')
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.attr('font-size', @options.hoverFontSize)
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@hoverSet = @r.set()
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@hoverSet.push(@hover)
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@hoverSet.push(@xLabel)
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@yLabels = []
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for i in [0..@series.length-1]
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yLabel = @r.text(0, @options.hoverFontSize * 1.5 * (i + 1.5) - @hoverHeight / 2, '')
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.attr('fill', @options.lineColors[i])
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.attr('font-size', @options.hoverFontSize)
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@yLabels.push(yLabel)
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@hoverSet.push(yLabel)
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updateHover: (index) =>
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@hoverSet.show()
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@xLabel.attr('text', @columnLabels[index])
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for i in [0..@series.length-1]
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@yLabels[i].attr('text', "#{@seriesLabels[i]}: #{Morris.commas(@series[i][index])}#{@options.units}")
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# recalculate hover box width
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maxLabelWidth = Math.max.apply null, $.map @yLabels, (l) ->
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l.getBBox().width
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maxLabelWidth = Math.max maxLabelWidth, @xLabel.getBBox().width
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@hover.attr 'width', maxLabelWidth + @options.hoverPaddingX * 2
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@hover.attr 'x', -@options.hoverPaddingX - maxLabelWidth / 2
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# move to y pos
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yloc = Math.min.apply null, $.map @series, (s) =>
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@transY s[index]
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if yloc > @hoverHeight + @options.hoverPaddingY * 2 + @options.hoverMargin + @options.marginTop
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yloc = yloc - @hoverHeight / 2 - @options.hoverPaddingY - @options.hoverMargin
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else
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yloc = yloc + @hoverHeight / 2 + @options.hoverPaddingY + @options.hoverMargin
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yloc = Math.max @options.marginTop + @hoverHeight / 2 + @options.hoverPaddingY, yloc
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yloc = Math.min @options.marginTop + @height - @hoverHeight / 2 - @options.hoverPaddingY, yloc
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xloc = Math.min @left + @width - maxLabelWidth / 2 - @options.hoverPaddingX, @columns[index]
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xloc = Math.max @left + maxLabelWidth / 2 + @options.hoverPaddingX, xloc
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@hoverSet.attr 'transform', "t#{xloc},#{yloc}"
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hideHover: ->
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@hoverSet.hide()
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hilight: (index) =>
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if @prevHilight isnt null and @prevHilight isnt index
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for i in [0..@seriesPoints.length-1]
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if @seriesPoints[i][@prevHilight]
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@seriesPoints[i][@prevHilight].animate @pointShrink
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if index isnt null and @prevHilight isnt index
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for i in [0..@seriesPoints.length-1]
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if @seriesPoints[i][index]
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@seriesPoints[i][index].animate @pointGrow
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@updateHover index
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@prevHilight = index
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if index is null
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@hideHover()
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updateHilight: (x) =>
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x -= @el.offset().left
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for hoverIndex in [@hoverMargins.length..0]
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if hoverIndex == 0 || @hoverMargins[hoverIndex - 1] > x
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@hilight hoverIndex
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break
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measureText: (text, fontSize = 12) ->
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tt = @r.text(100, 100, text).attr('font-size', fontSize)
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ret = tt.getBBox()
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tt.remove()
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return ret
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# parse a date into a javascript timestamp
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#
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Morris.parseDate = (date) ->
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if typeof date is 'number'
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return date
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m = date.match /^(\d+) Q(\d)$/
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n = date.match /^(\d+)-(\d+)$/
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o = date.match /^(\d+)-(\d+)-(\d+)$/
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p = date.match /^(\d+) W(\d+)$/
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q = date.match /^(\d+)-(\d+)-(\d+)[ T](\d+):(\d+)Z?$/
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r = date.match /^(\d+)-(\d+)-(\d+)[ T](\d+):(\d+):(\d+(\.\d+)?)Z?$/
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if m
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new Date(
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parseInt(m[1], 10),
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parseInt(m[2], 10) * 3 - 1,
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1).getTime()
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else if n
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new Date(
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parseInt(n[1], 10),
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parseInt(n[2], 10) - 1,
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1).getTime()
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else if o
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new Date(
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parseInt(o[1], 10),
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parseInt(o[2], 10) - 1,
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parseInt(o[3], 10)).getTime()
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else if p
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# calculate number of weeks in year given
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ret = new Date(parseInt(p[1], 10), 0, 1);
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# first thursday in year (ISO 8601 standard)
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if ret.getDay() isnt 4
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ret.setMonth(0, 1 + ((4 - ret.getDay()) + 7) % 7);
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# add weeks
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ret.getTime() + parseInt(p[2], 10) * 604800000
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else if q
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new Date(
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parseInt(q[1], 10),
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parseInt(q[2], 10) - 1,
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parseInt(q[3], 10),
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parseInt(q[4], 10),
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parseInt(q[5], 10)).getTime()
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else if r
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secs = parseFloat(r[6])
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isecs = Math.floor(secs)
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msecs = Math.round((secs - isecs) * 1000)
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new Date(
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parseInt(r[1], 10),
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parseInt(r[2], 10) - 1,
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parseInt(r[3], 10),
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parseInt(r[4], 10),
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parseInt(r[5], 10),
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isecs,
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msecs).getTime()
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else
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new Date(parseInt(date, 10), 0, 1).getTime()
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# make long numbers prettier by inserting commas
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# eg: commas(1234567) -> '1,234,567'
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#
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Morris.commas = (num) ->
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if num is null
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"n/a"
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else
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ret = if num < 0 then "-" else ""
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absnum = Math.abs(num)
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intnum = Math.floor(absnum).toFixed(0)
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ret += intnum.replace(/(?=(?:\d{3})+$)(?!^)/g, ',')
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strabsnum = absnum.toString()
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if strabsnum.length > intnum.length
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ret += strabsnum.slice(intnum.length)
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ret
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# zero-pad numbers to two characters wide
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#
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Morris.pad2 = (number) -> (if number < 10 then '0' else '') + number
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# generate a series of label, timestamp pairs for x-axis labels
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#
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Morris.labelSeries = (dmin, dmax, pxwidth) ->
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ddensity = 200 * (dmax - dmin) / pxwidth # seconds per `margin` pixels
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d0 = new Date(dmin)
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for s in Morris.LABEL_SPECS
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if ddensity >= s.span or s.span == Morris.LABEL_SPECS[Morris.LABEL_SPECS.length - 1].span
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d = s.start(d0)
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ret = []
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while (t = d.getTime()) <= dmax
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if t >= dmin
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ret.push [s.fmt(d), t]
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s.incr(d)
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return ret
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minutesSpecHelper = (interval) ->
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{
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span: interval * 60 * 1000
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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.setMinutes(d.getMinutes() + interval)
|
|
}
|
|
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.setSeconds(d.getSeconds() + interval)
|
|
}
|
|
|
|
Morris.LABEL_SPECS = [
|
|
{
|
|
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)
|
|
}
|
|
{
|
|
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)
|
|
}
|
|
{
|
|
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)
|
|
}
|
|
minutesSpecHelper(60)
|
|
minutesSpecHelper(30)
|
|
minutesSpecHelper(15)
|
|
minutesSpecHelper(10)
|
|
minutesSpecHelper(5)
|
|
minutesSpecHelper(1)
|
|
secondsSpecHelper(30)
|
|
secondsSpecHelper(15)
|
|
secondsSpecHelper(10)
|
|
secondsSpecHelper(5)
|
|
secondsSpecHelper(1)
|
|
]
|
|
|
|
window.Morris = Morris
|
|
# vim: set et ts=2 sw=2 sts=2
|