Class: TermSlides::Diagram

Inherits:
Object
  • Object
show all
Defined in:
lib/term-slides.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(renderer, dot, width = nil, height = nil) ⇒ Diagram

Returns a new instance of Diagram.



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# File 'lib/term-slides.rb', line 158

def initialize renderer, dot, width = nil, height = nil
  @renderer = renderer
  @dot = dot
  @width = width
  @height = height
end

Instance Attribute Details

#dot ⇒ Object (readonly)

Returns the value of attribute dot.



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# File 'lib/term-slides.rb', line 157

def dot
  @dot
end

#height ⇒ Object (readonly)

Returns the value of attribute height.



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# File 'lib/term-slides.rb', line 157

def height
  @height
end

#width ⇒ Object (readonly)

Returns the value of attribute width.



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# File 'lib/term-slides.rb', line 157

def width
  @width
end

Instance Method Details

#build ⇒ Object 



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# File 'lib/term-slides.rb', line 164

def build
  $i ||= 0
  path = Tempfile.new(['graph', ".png"]).path
  dot = 'dot'
  if find_executable dot
    `echo "#{@dot.gsub('"', '\\"')}" | #{dot} -Tpng > #{path}`
    $i += 1
  end
  path
end

#render ⇒ Object 



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# File 'lib/term-slides.rb', line 174

def render
  @renderer.render_diagram self
end