Class: Compass::Core::SassExtensions::Functions::GradientSupport::RadialGradient

Inherits:
Sass::Script::Value::Base show all
Includes:
Constants, Assertions, Functions, Gradient, InlineImage
Defined in:
lib/compass/core/sass_extensions/functions/gradient_support.rb,
lib/compass/core/sass_extensions/functions/gradient_support.rb

Constant Summary

Constants included from Constants

Constants::POSITIONS

Constants inherited from Sass::Script::Value::Base

Sass::Script::Value::Base::NO_CHILDREN

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from InlineImage

#inline_font_files, #inline_image

Methods included from Constants

#is_position, #is_position_list, #is_url, #opposite_position

Methods included from Functions

#_build_linear_gradient, #_linear_gradient, #_linear_gradient_legacy, #color_stops_in_percentages, #convert_angle_from_offical, #grad_color_stops, #grad_end_position, #grad_point, #grad_position, #linear_end_position, #linear_svg_gradient, #radial_gradient, #radial_svg_gradient, #reverse_side_or_corner

Methods included from Assertions

#assert_type

Methods included from Gradient

#angle?, #has_aspect?, included, #inspect, #is_position

Methods inherited from Sass::Script::Value::Base

#opts

Constructor Details

#initialize(position, shape_and_size, color_stops) ⇒ RadialGradient

Returns a new instance of RadialGradient.



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# File 'lib/compass/core/sass_extensions/functions/gradient_support.rb', line 280

def initialize(position, shape_and_size, color_stops)
  unless color_stops.value.size >= 2
    raise Sass::SyntaxError, "At least two color stops are required for a radial-gradient"
  end
  if angle?(position)
    raise Sass::SyntaxError, "CSS no longer allows angles in radial-gradients."
  end
  self.position = position
  self.shape_and_size = shape_and_size
  self.color_stops = color_stops
end

Instance Attribute Details

#color_stops ⇒ Object

Returns the value of attribute color_stops.



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# File 'lib/compass/core/sass_extensions/functions/gradient_support.rb', line 274

def color_stops
  @color_stops
end

#position ⇒ Object

Returns the value of attribute position.



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# File 'lib/compass/core/sass_extensions/functions/gradient_support.rb', line 274

def position
  @position
end

#shape_and_size ⇒ Object

Returns the value of attribute shape_and_size.



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# File 'lib/compass/core/sass_extensions/functions/gradient_support.rb', line 274

def shape_and_size
  @shape_and_size
end

Instance Method Details

#array_to_s(array, opts) ⇒ Object 



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# File 'lib/compass/core/sass_extensions/functions/gradient_support.rb', line 362

def array_to_s(array, opts)
  if array.is_a?(Sass::Script::Value::List)
    array.to_s
  else
    l = list(array, :space)
    l.options = opts
    l.to_s
  end
end

#children ⇒ Object 



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# File 'lib/compass/core/sass_extensions/functions/gradient_support.rb', line 276

def children
  [color_stops, position, shape_and_size].compact
end

#new_standard_arguments(options = self.options) ⇒ Object 



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# File 'lib/compass/core/sass_extensions/functions/gradient_support.rb', line 333

def new_standard_arguments(options = self.options)
  if shape_and_size
    "#{array_to_s(shape_and_size, options)} at #{array_to_s(position, options)}, #{array_to_s(color_stops, options)}"
  elsif position
    "#{array_to_s(position, options)}, #{array_to_s(color_stops, options)}"
  else
    array_to_s(color_stops, options)
  end
end

#old_standard_arguments(options = self.options) ⇒ Object 



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# File 'lib/compass/core/sass_extensions/functions/gradient_support.rb', line 343

def old_standard_arguments(options = self.options)
  if shape_and_size
    "#{array_to_s(position, options)}, #{array_to_s(shape_and_size, options)}, #{array_to_s(color_stops, options)}"
  elsif position
    "#{array_to_s(position, options)}, #{array_to_s(color_stops, options)}"
  else
    array_to_s(color_stops, options)
  end
end

#supports?(aspect) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/compass/core/sass_extensions/functions/gradient_support.rb', line 300

def supports?(aspect)
  # I don't know how to support radial old webkit gradients (owg)
  if %w(owg).include?(aspect)
    false
  else
    super
  end
end

#to_css2(options = self.options) ⇒ Object 



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# File 'lib/compass/core/sass_extensions/functions/gradient_support.rb', line 358

def to_css2(options = self.options)
  null
end

#to_moz(options = self.options) ⇒ Object 



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# File 'lib/compass/core/sass_extensions/functions/gradient_support.rb', line 319

def to_moz(options = self.options)
  s = "-moz-radial-gradient("
  s << old_standard_arguments(options)
  s << ")"
  identifier(s)
end

#to_official ⇒ Object 



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# File 'lib/compass/core/sass_extensions/functions/gradient_support.rb', line 326

def to_official
  s = "radial-gradient("
  s << new_standard_arguments(options)
  s << ")"
  identifier(s)
end

#to_s(options = self.options) ⇒ Object 



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# File 'lib/compass/core/sass_extensions/functions/gradient_support.rb', line 292

def to_s(options = self.options)
  to_official.to_s
end

#to_s_prefixed(options = self.options) ⇒ Object 



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# File 'lib/compass/core/sass_extensions/functions/gradient_support.rb', line 296

def to_s_prefixed(options = self.options)
  to_s(options)
end

#to_svg(options = self.options) ⇒ Object 



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# File 'lib/compass/core/sass_extensions/functions/gradient_support.rb', line 353

def to_svg(options = self.options)
  # XXX Add shape support if possible
  radial_svg_gradient(color_stops, position || _center_position)
end

#to_webkit(options = self.options) ⇒ Object 



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# File 'lib/compass/core/sass_extensions/functions/gradient_support.rb', line 312

def to_webkit(options = self.options)
  s = "-webkit-radial-gradient("
  s << old_standard_arguments(options)
  s << ")"
  identifier(s)
end