Module: InlineSvg::TransformPipeline::Transformations

Defined in:
lib/inline_svg/transform_pipeline/transformations.rb,
lib/inline_svg/transform_pipeline/transformations/size.rb,
lib/inline_svg/transform_pipeline/transformations/title.rb,
lib/inline_svg/transform_pipeline/transformations/width.rb,
lib/inline_svg/transform_pipeline/transformations/height.rb,
lib/inline_svg/transform_pipeline/transformations/no_comment.rb,
lib/inline_svg/transform_pipeline/transformations/aria_hidden.rb,
lib/inline_svg/transform_pipeline/transformations/description.rb,
lib/inline_svg/transform_pipeline/transformations/id_attribute.rb,
lib/inline_svg/transform_pipeline/transformations/transformation.rb,
lib/inline_svg/transform_pipeline/transformations/aria_attributes.rb,
lib/inline_svg/transform_pipeline/transformations/class_attribute.rb,
lib/inline_svg/transform_pipeline/transformations/data_attributes.rb,
lib/inline_svg/transform_pipeline/transformations/style_attribute.rb,
lib/inline_svg/transform_pipeline/transformations/aria_hidden_attribute.rb,
lib/inline_svg/transform_pipeline/transformations/preserve_aspect_ratio.rb

Defined Under Namespace

Classes: AriaAttributes, AriaHidden, AriaHiddenAttribute, ClassAttribute, DataAttributes, Description, Height, IdAttribute, NoComment, NullTransformation, PreserveAspectRatio, Size, StyleAttribute, Title, Transformation, Width

Class Method Summary collapse

Class Method Details

.all_default_values ⇒ Object 



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# File 'lib/inline_svg/transform_pipeline/transformations.rb', line 64

def self.all_default_values
  custom_transformations
    .values
    .select {|opt| opt[:default_value] != nil}
    .map {|opt| [opt[:attribute], opt[:default_value]]}
    .inject({}) {|options, attrs| options.merge!(attrs[0] => attrs[1])}
end

.all_transformations ⇒ Object 



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# File 'lib/inline_svg/transform_pipeline/transformations.rb', line 38

def self.all_transformations
  in_priority_order(built_in_transformations.merge(custom_transformations))
end

.built_in_transformations ⇒ Object

Transformations are run in priority order, lowest number first:



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# File 'lib/inline_svg/transform_pipeline/transformations.rb', line 3

def self.built_in_transformations
  {
    id: { transform: IdAttribute, priority: 1 },
    desc: { transform: Description, priority: 2 },
    title: { transform: Title, priority: 3 },
    aria: { transform: AriaAttributes },
    aria_hidden: { transform: AriaHiddenAttribute },
    class: { transform: ClassAttribute },
    style: { transform: StyleAttribute },
    data: { transform: DataAttributes },
    height: { transform: Height },
    nocomment: { transform: NoComment },
    preserve_aspect_ratio: { transform: PreserveAspectRatio },
    size: { transform: Size },
    width: { transform: Width },
  }
end

.custom_transformations ⇒ Object 



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# File 'lib/inline_svg/transform_pipeline/transformations.rb', line 21

def self.custom_transformations
  magnify_priorities(InlineSvg.configuration.custom_transformations)
end

.in_priority_order(transforms) ⇒ Object 



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# File 'lib/inline_svg/transform_pipeline/transformations.rb', line 52

def self.in_priority_order(transforms)
  transforms.sort_by { |_, options| options.fetch(:priority, transforms.size) }
end

.lookup(transform_params) ⇒ Object 



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# File 'lib/inline_svg/transform_pipeline/transformations.rb', line 42

def self.lookup(transform_params)
  return [] unless transform_params.any? || custom_transformations.any?

  transform_params_with_defaults = params_with_defaults(transform_params)
  all_transformations.map { |name, definition|
    value = transform_params_with_defaults[name]
    definition.fetch(:transform, no_transform).create_with_value(value) if value
  }.compact
end

.magnify(priority = 0) ⇒ Object 



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# File 'lib/inline_svg/transform_pipeline/transformations.rb', line 34

def self.magnify(priority=0)
  (priority + 1) * built_in_transformations.size
end

.magnify_priorities(transforms) ⇒ Object 



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# File 'lib/inline_svg/transform_pipeline/transformations.rb', line 25

def self.magnify_priorities(transforms)
  transforms.inject({}) do |output, (name, definition)|
    priority = definition.fetch(:priority, built_in_transformations.size)

    output[name] = definition.merge( { priority: magnify(priority) } )
    output
  end
end

.no_transform ⇒ Object 



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# File 'lib/inline_svg/transform_pipeline/transformations.rb', line 72

def self.no_transform
  InlineSvg::TransformPipeline::Transformations::NullTransformation
end

.params_with_defaults(params) ⇒ Object 



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# File 'lib/inline_svg/transform_pipeline/transformations.rb', line 56

def self.params_with_defaults(params)
  without_empty_values(all_default_values.merge(params))
end

.without_empty_values(params) ⇒ Object 



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# File 'lib/inline_svg/transform_pipeline/transformations.rb', line 60

def self.without_empty_values(params)
  params.reject {|key, value| value.nil?}
end