Class: Squib::Args::Draw

Inherits:
Object
  • Object
show all
Includes:
ArgLoader, ColorValidator
Defined in:
lib/squib/args/draw.rb

Class Method Summary collapse

Instance Method Summary collapse

Methods included from ColorValidator

#colorify

Methods included from ArgLoader

#[], #convert_units, #defaultify, #expand_and_set_and_defaultify, #expandable_singleton?, #extract!, #load!, #prep_layout_args, #validate

Constructor Details

#initialize(custom_colors, dsl_method_defaults = {}) ⇒ Draw

Returns a new instance of Draw.



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# File 'lib/squib/args/draw.rb', line 15

def initialize(custom_colors, dsl_method_defaults = {})
  @custom_colors = custom_colors
  @dsl_method_defaults = dsl_method_defaults
end

Class Method Details

.expanding_parameters ⇒ Object 



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# File 'lib/squib/args/draw.rb', line 32

def self.expanding_parameters
  parameters.keys # all of them are expandable
end

.parameters ⇒ Object 



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# File 'lib/squib/args/draw.rb', line 20

def self.parameters
  { color: :black,
    fill_color: '#0000',
    stroke_color: :black,
    stroke_width: 2.0,
    stroke_strategy: :fill_first,
    join: :miter,
    cap: 'butt',
    dash: ''
  }
end

.params_with_units ⇒ Object 



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# File 'lib/squib/args/draw.rb', line 36

def self.params_with_units
  [:stroke_width]
end

Instance Method Details

#validate_cap(arg, _i) ⇒ Object 



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# File 'lib/squib/args/draw.rb', line 51

def validate_cap(arg, _i)
  case arg.to_s.strip.downcase
  when 'butt'
    Cairo::LINE_CAP_BUTT
  when 'round'
    Cairo::LINE_CAP_ROUND
  when 'square'
    Cairo::LINE_CAP_SQUARE
  end
end

#validate_color(arg, _i) ⇒ Object 



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# File 'lib/squib/args/draw.rb', line 76

def validate_color(arg, _i)
  colorify(arg, @custom_colors)
end

#validate_dash(arg, _i) ⇒ Object 



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# File 'lib/squib/args/draw.rb', line 62

def validate_dash(arg, _i)
  arg.to_s.split.collect do |x|
    UnitConversion.parse(x, @dpi, @cell_px).to_f
  end
end

#validate_fill_color(arg, _i) ⇒ Object 



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# File 'lib/squib/args/draw.rb', line 68

def validate_fill_color(arg, _i)
  colorify(arg, @custom_colors)
end

#validate_join(arg, _i) ⇒ Object 



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# File 'lib/squib/args/draw.rb', line 40

def validate_join(arg, _i)
  case arg.to_s.strip.downcase
  when 'miter'
    Cairo::LINE_JOIN_MITER
  when 'round'
    Cairo::LINE_JOIN_ROUND
  when 'bevel'
    Cairo::LINE_JOIN_BEVEL
  end
end

#validate_stroke_color(arg, _i) ⇒ Object 



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# File 'lib/squib/args/draw.rb', line 72

def validate_stroke_color(arg, _i)
  colorify(arg, @custom_colors)
end

#validate_stroke_strategy(arg, _i) ⇒ Object 



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# File 'lib/squib/args/draw.rb', line 80

def validate_stroke_strategy(arg, _i)
  case arg.to_s.downcase.strip
  when 'fill_first'
    :fill_first
  when 'stroke_first'
    :stroke_first
  else
    raise "Only 'stroke_first' or 'fill_first' allowed"
  end
end