Class: RubyCharts::Charts::BaseChart

Inherits:
Object
  • Object
show all
Defined in:
lib/ruby_charts/charts/base_chart.rb

Direct Known Subclasses

BarChart, LineChart, PieChart

Constant Summary collapse

COLORS = 
[
  [255, 107, 107],    # Red
  [78, 205, 196],     # Teal
  [69, 183, 209],     # Blue
  [255, 160, 122],    # Orange
  [154, 216, 200],    # Mint
  [247, 220, 111],    # Yellow
  [187, 143, 206],    # Purple
  [133, 193, 226],    # Light Blue
  [248, 184, 139],    # Peach
  [170, 190, 198]     # Gray
].freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(data) ⇒ BaseChart

Returns a new instance of BaseChart.



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# File 'lib/ruby_charts/charts/base_chart.rb', line 23

def initialize(data)
  @data = data
  @options = {
    width: 1200,
    height: 700,
    title: 'Chart',
    subtitle: nil,
    colors: COLORS,
    padding: 80,
    font: Config.font(:regular),
    font_bold: Config.font(:bold)
  }
end

Instance Attribute Details

#data ⇒ Object

Returns the value of attribute data.



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# File 'lib/ruby_charts/charts/base_chart.rb', line 21

def data
  @data
end

#options ⇒ Object

Returns the value of attribute options.



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# File 'lib/ruby_charts/charts/base_chart.rb', line 21

def options
  @options
end

Instance Method Details

#colors(*color_array) ⇒ Object 



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# File 'lib/ruby_charts/charts/base_chart.rb', line 47

def colors(*color_array)
  @options[:colors] = color_array.flatten
  self
end

#font(path) ⇒ Object 



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# File 'lib/ruby_charts/charts/base_chart.rb', line 52

def font(path)
  @options[:font] = path
  self
end

#legend(position: :right) ⇒ Object 



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# File 'lib/ruby_charts/charts/base_chart.rb', line 57

def legend(position: :right)
  @options[:legend] = position
  self
end

#render ⇒ Object 



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# File 'lib/ruby_charts/charts/base_chart.rb', line 62

def render
  @img = GD::Image.new(@options[:width], @options[:height])
  @img.fill([255, 255, 255])
  
  draw_background
  draw_title
  draw_chart_content
  
  @img
end

#save(filename) ⇒ Object 



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# File 'lib/ruby_charts/charts/base_chart.rb', line 73

def save(filename)
  render.save(filename)
  puts "✓ Chart saved: #{filename}"
  filename
end

#subtitle(text) ⇒ Object 



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# File 'lib/ruby_charts/charts/base_chart.rb', line 42

def subtitle(text)
  @options[:subtitle] = text
  self
end

#title(text) ⇒ Object 



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# File 'lib/ruby_charts/charts/base_chart.rb', line 37

def title(text)
  @options[:title] = text
  self
end