first mockup in go

static/bower_components/morris.js/lib/morris.bar.coffee

@@ -0,0 +1,208 @@
+class Morris.Bar extends Morris.Grid
+  constructor: (options) ->
+    return new Morris.Bar(options) unless (@ instanceof Morris.Bar)
+    super($.extend {}, options, parseTime: false)
+
+  init: ->
+    @cumulative = @options.stacked
+
+    if @options.hideHover isnt 'always'
+      @hover = new Morris.Hover(parent: @el)
+      @on('hovermove', @onHoverMove)
+      @on('hoverout', @onHoverOut)
+      @on('gridclick', @onGridClick)
+
+  # Default configuration
+  #
+  defaults:
+    barSizeRatio: 0.75
+    barGap: 3
+    barColors: [
+      '#0b62a4'
+      '#7a92a3'
+      '#4da74d'
+      '#afd8f8'
+      '#edc240'
+      '#cb4b4b'
+      '#9440ed'
+    ],
+    barOpacity: 1.0
+    barRadius: [0, 0, 0, 0]
+    xLabelMargin: 50
+
+  # Do any size-related calculations
+  #
+  # @private
+  calc: ->
+    @calcBars()
+    if @options.hideHover is false
+      @hover.update(@hoverContentForRow(@data.length - 1)...)
+
+  # calculate series data bars coordinates and sizes
+  #
+  # @private
+  calcBars: ->
+    for row, idx in @data
+      row._x = @left + @width * (idx + 0.5) / @data.length
+      row._y = for y in row.y
+        if y? then @transY(y) else null
+
+  # Draws the bar chart.
+  #
+  draw: ->
+    @drawXAxis() if @options.axes in [true, 'both', 'x']
+    @drawSeries()
+
+  # draw the x-axis labels
+  #
+  # @private
+  drawXAxis: ->
+    # draw x axis labels
+    ypos = @bottom + (@options.xAxisLabelTopPadding || @options.padding / 2)
+    prevLabelMargin = null
+    prevAngleMargin = null
+    for i in [0...@data.length]
+      row = @data[@data.length - 1 - i]
+      label = @drawXAxisLabel(row._x, ypos, row.label)
+      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
+      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()
+
+  # draw the data series
+  #
+  # @private
+  drawSeries: ->
+    groupWidth = @width / @options.data.length
+    numBars = if @options.stacked then 1 else @options.ykeys.length
+    barWidth = (groupWidth * @options.barSizeRatio - @options.barGap * (numBars - 1)) / numBars
+    barWidth = Math.min(barWidth, @options.barSize) if @options.barSize
+    spaceLeft = groupWidth - barWidth * numBars - @options.barGap * (numBars - 1)
+    leftPadding = spaceLeft / 2
+    zeroPos = if @ymin <= 0 and @ymax >= 0 then @transY(0) else null
+    @bars = for row, idx in @data
+      lastTop = 0
+      for ypos, sidx in row._y
+        if ypos != null
+          if zeroPos
+            top = Math.min(ypos, zeroPos)
+            bottom = Math.max(ypos, zeroPos)
+          else
+            top = ypos
+            bottom = @bottom
+
+          left = @left + idx * groupWidth + leftPadding
+          left += sidx * (barWidth + @options.barGap) unless @options.stacked
+          size = bottom - top
+
+          if @options.verticalGridCondition and @options.verticalGridCondition(row.x)
+            @drawBar(@left + idx * groupWidth, @top, groupWidth, Math.abs(@top - @bottom), @options.verticalGridColor, @options.verticalGridOpacity, @options.barRadius)
+
+          top -= lastTop if @options.stacked
+          @drawBar(left, top, barWidth, size, @colorFor(row, sidx, 'bar'),
+              @options.barOpacity, @options.barRadius)
+
+          lastTop += size
+        else
+          null
+
+  # @private
+  #
+  # @param row  [Object] row data
+  # @param sidx [Number] series index
+  # @param type [String] "bar", "hover" or "label"
+  colorFor: (row, sidx, type) ->
+    if typeof @options.barColors is 'function'
+      r = { x: row.x, y: row.y[sidx], label: row.label }
+      s = { index: sidx, key: @options.ykeys[sidx], label: @options.labels[sidx] }
+      @options.barColors.call(@, r, s, type)
+    else
+      @options.barColors[sidx % @options.barColors.length]
+
+  # hit test - returns the index of the row at the given x-coordinate
+  #
+  hitTest: (x) ->
+    return null if @data.length == 0
+    x = Math.max(Math.min(x, @right), @left)
+    Math.min(@data.length - 1,
+      Math.floor((x - @left) / (@width / @data.length)))
+
+  # 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)
+    @hover.update(@hoverContentForRow(index)...)
+
+  # hover out event handler
+  #
+  # @private
+  onHoverOut: =>
+    if @options.hideHover isnt false
+      @hover.hide()
+
+  # 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)
+    x = @left + (index + 0.5) * @width / @data.length
+    [content, x]
+
+  drawXAxisLabel: (xPos, yPos, text) ->
+    label = @raphael.text(xPos, yPos, text)
+      .attr('font-size', @options.gridTextSize)
+      .attr('font-family', @options.gridTextFamily)
+      .attr('font-weight', @options.gridTextWeight)
+      .attr('fill', @options.gridTextColor)
+
+  drawBar: (xPos, yPos, width, height, barColor, opacity, radiusArray) ->
+    maxRadius = Math.max(radiusArray...)
+    if maxRadius == 0 or maxRadius > height
+      path = @raphael.rect(xPos, yPos, width, height)
+    else
+      path = @raphael.path @roundedRect(xPos, yPos, width, height, radiusArray)
+    path
+      .attr('fill', barColor)
+      .attr('fill-opacity', opacity)
+      .attr('stroke', 'none')
+
+  roundedRect: (x, y, w, h, r = [0,0,0,0]) ->
+    [ "M", x, r[0] + y, "Q", x, y, x + r[0], y,
+      "L", x + w - r[1], y, "Q", x + w, y, x + w, y + r[1],
+      "L", x + w, y + h - r[2], "Q", x + w, y + h, x + w - r[2], y + h,
+      "L", x + r[3], y + h, "Q", x, y + h, x, y + h - r[3], "Z" ]
+