Module: Prawn::SVG::Attributes::Opacity

Included in:
Elements::Base
Defined in:
lib/prawn/svg/attributes/opacity.rb

Instance Method Summary collapse

Instance Method Details

#parse_opacity_attributes_and_call ⇒ Object 



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# File 'lib/prawn/svg/attributes/opacity.rb', line 2

def parse_opacity_attributes_and_call
  # We can't do nested opacities quite like the SVG requires, but this is close enough.
  opacity = properties.opacity.to_f.clamp(0, 1) if properties.opacity
  fill_opacity = properties.fill_opacity.to_f.clamp(0, 1) if properties.fill_opacity
  stroke_opacity = properties.stroke_opacity.to_f.clamp(0, 1) if properties.stroke_opacity

  if opacity || fill_opacity || stroke_opacity
    state.fill_opacity *= [opacity || 1, fill_opacity || 1].min
    state.stroke_opacity *= [opacity || 1, stroke_opacity || 1].min

    add_call_and_enter 'transparent', state.fill_opacity, state.stroke_opacity
  end
end