Class: ReportEngine::GoogleChart

Inherits:
Object
  • Object
show all
Defined in:
lib/report_engine/google_chart.rb

Direct Known Subclasses

Html::GoogleChart, Pdf::GoogleChart

Instance Method Summary collapse

Constructor Details

#initialize(canvas, options) ⇒ GoogleChart

Returns a new instance of GoogleChart.



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# File 'lib/report_engine/google_chart.rb', line 6

def initialize(canvas, options)
  @canvas       = canvas
  @data         = options[:data]
  @scale_labels = options[:scale_labels]
  @x_label      = options[:x_label]
  @y_label      = options[:y_label]
  @grouped      = options[:grouped].nil? ? true : options[:grouped]
  @colors       = options[:colors] || ['97172E','EE8C9E']
  @show_marker  = options[:show_marker]
end

Instance Method Details

#generate_url ⇒ Object 



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# File 'lib/report_engine/google_chart.rb', line 17

def generate_url
  max = @data.max
  chart = ::GChart.bar do |g|
    g.grouped = @grouped
    g.data = @data #values.map{|v| v * 100.0 / max }
    g.colors = @colors
    g.width  = 520
    g.height = 140
    g.orientation = :vertical
    g.axis(:left) do |a|
      a.labels = [@y_label] #["%"]
      a.label_positions = [100]
      a.text_color = :black
    end
    g.axis(:bottom) do |a|
      a.labels = @scale_labels # ["0-10","10-20","20-30","30-40","40-50","50-60","60-70","70-80","80-90","90-100"]
      a.text_color = :black
    end
    g.axis(:bottom) do |a|
      a.labels = [@x_label] # ["Procentil"]
      a.label_positions = [100]
      a.text_color = :black
    end
    extra = {"chbh" => "a,5,10", "chds" => "0,#{max_value}"}
    extra.update("chbh" => "r,5,10") if @data.flatten.size < 3
    if @show_marker
      if @data.first.is_a? Array
        extra.update("chm" => @data.size.times.map{|i| "N,000000,#{i},-1,11" }.join('|'))
      else
        extra.update("chm" => "N,000000,0,-1,11")
      end
    end
    g.extras = extra
  end
  chart.to_url
end

#max_value ⇒ Object 



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# File 'lib/report_engine/google_chart.rb', line 54

def max_value
  @data.flatten.max
end