整理一些非常有用的gems

class TestItController < ApplicationController
  
  #柱状图
  def index
    actionname = params[:actionname] || "index"
    Rails.logger.info("actionname is #{actionname}")
    respond_to do |wants|
      wants.html {
        @graph = open_flash_chart_object( 600,300,url_for( :action => actionname,:format => :json ) )
      }
      wants.json { 
        chart = OpenFlashChart.new("我的柱状图") do |c|
          c << BarGlass.new( :values => (1..10).sort_by{rand} )
        end
        render :text => chart,:layout => false
      }
    end
  end

  #饼状图
  def bar
   respond_to do |format|
     format.json{
       title = Title.new("Pie Chart Example For Chipster")
       pie = Pie.new
       pie.start_angle = 35
       pie.animate = true
       pie.tooltip = '#val# of #total#<br>#percent# of 100%'
       pie.colours = ["#d01f3c","#356aa0","#C79810"]
       pie.values  = [2,3,PieValue.new(6.5,"Hello (6.5)")]

       chart = OpenFlashChart.new
       chart.title = title
       chart.add_element(pie)

       chart.x_axis = nil

       render :text => chart.to_s
     }
   end
  end

  #line
   def line
    title = Title.new("Multiple Lines")

    data1 = []
    data2 = []
    data3 = []

    10.times do |x|
      data1 << rand(5) + 1
      data2 << rand(6) + 7
      data3 << rand(5) + 14
    end

    line_dot = LineDot.new
    line_dot.text = "Line Dot"
    line_dot.width = 4
    line_dot.colour = '#DFC329'
    line_dot.dot_size = 5
    line_dot.values = data1
    Rails.logger.info("line_hollow data is : #{line_dot.inspect}")
    line_hollow = LineHollow.new
    line_hollow.text = "Line Hollow"
    line_hollow.width = 1
    line_hollow.colour = '#6363AC'
    line_hollow.dot_size = 5
    line_hollow.values = data2
    Rails.logger.info("line_hollow data is : #{line_hollow.inspect}")
    line = Line.new
    line.text = "Line"
    line.width = 1
    line.colour = '#5E4725'
    line.dot_size = 5
    line.values = data3
    Rails.logger.info("line data is : #{line.inspect}")
    
    y = YAxis.new
    y.set_range(0,20,5)

    x_legend = XLegend.new("MY X Legend")
    x_legend.set_style('{font-size: 20px; color: #778877}')

    y_legend = YLegend.new("MY Y Legend")
    y_legend.set_style('{font-size: 20px; color: #770077}')

    chart =OpenFlashChart.new
    chart.set_title(title)
    chart.set_x_legend(x_legend)
    chart.set_y_legend(y_legend)
    chart.y_axis = y

    chart.add_element(line_dot)
    chart.add_element(line_hollow)
    chart.add_element(line)
    respond_to do |format|
      format.json {
        render :text => chart.to_s
      }
    end
  end

  #波动图
  def chart
    data1 = []
    data2 = []
    year = Time.now.year

    31.times do |i|
      x = "#{year}-1-#{i+1}".to_time.to_i
      y = (Math.sin(i+1) * 2.5) + 10

      data1 << ScatterValue.new(x,y)
      data2 << (Math.cos(i+1) * 1.9) + 4
    end

    dot = HollowDot.new
    dot.size = 3
    dot.halo_size = 2
    dot.tooltip = "#date:d M y#<br>Value: #val#"

    line = ScatterLine.new("#DB1750",3)
    line.values = data1
    line.default_dot_style = dot

    x = XAxis.new
    x.set_range("#{year}-1-1".to_time.to_i,"#{year}-1-31".to_time.to_i)
    x.steps = 86400

    labels = XAxisLabels.new
    labels.text = "#date: Y-M-d#"
    labels.steps = 86400
    labels.visible_steps = 2
    labels.rotate = 90

    x.labels = labels

    y = YAxis.new
    y.set_range(0,15,5)

    chart = OpenFlashChart.new
    title = Title.new(data2.size)

    chart.title = title
    chart.add_element(line)
    chart.x_axis = x
    chart.y_axis = y

    respond_to do |format|
      format.json {
        render :text => chart.to_s
      }
    end
  end

end