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 leftPadding = groupWidth * (1 - @options.barSizeRatio) / 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 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 = "
#{row.label}
" for y, j in row.y content += """
#{@options.labels[j]}: #{@yLabelFormat(y)}
""" 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" ]