Class: Sevgi::Graphics::Canvas

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Defined in:
lib/sevgi/graphics/auxilary/canvas.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(width:, height:, unit: "mm", name: :custom, margins: []) ⇒ Canvas

Returns a new instance of Canvas.



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# File 'lib/sevgi/graphics/auxilary/canvas.rb', line 26

def initialize(width:, height:, unit: "mm", name: :custom, margins: [])
  @size = Paper[width, height, unit, name]
  @margin = Margin[*margins]

  compute
  freeze
end

Instance Attribute Details

#inner ⇒ Object (readonly)

Returns the value of attribute inner.



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# File 'lib/sevgi/graphics/auxilary/canvas.rb', line 24

def inner
  @inner
end

#margin ⇒ Object (readonly)

Returns the value of attribute margin.



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# File 'lib/sevgi/graphics/auxilary/canvas.rb', line 24

def margin
  @margin
end

#size ⇒ Object (readonly)

Returns the value of attribute size.



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# File 'lib/sevgi/graphics/auxilary/canvas.rb', line 24

def size
  @size
end

Class Method Details

.call(arg = Undefined, **kwargs) ⇒ Object 



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# File 'lib/sevgi/graphics/auxilary/canvas.rb', line 8

def self.call(arg = Undefined, **kwargs)
  case arg
  when Undefined
    new(**kwargs)
  when ::Symbol, ::String
    new(**Paper.public_send(arg).to_h, **kwargs)
  else
    ArgumentError.("Argument must be a Paper symbol: #{arg}")
  end
end

Instance Method Details

#attributes ⇒ Object 



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# File 'lib/sevgi/graphics/auxilary/canvas.rb', line 34

def attributes(...) = {**viewport, viewBox: viewbox(...)}

#conforming ⇒ Object 



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# File 'lib/sevgi/graphics/auxilary/canvas.rb', line 36

def conforming(...) = self.class.conforming(self, ...)

#viewbox(origin = Undefined) ⇒ Object 



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# File 'lib/sevgi/graphics/auxilary/canvas.rb', line 40

def viewbox(origin = Undefined) = prettify(*originate(origin), width, height).join(" ")

#viewport ⇒ Object 



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# File 'lib/sevgi/graphics/auxilary/canvas.rb', line 38

def viewport = {width: "#{width}#{unit}", height: "#{height}#{unit}"}

#with(**kwargs) ⇒ Object 



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# File 'lib/sevgi/graphics/auxilary/canvas.rb', line 42

def with(**kwargs) = self.class.new(**size.to_h, margins: kwargs.fetch(:margins, margin.to_a))