Class: Capybara::Screenshot::Diff::AreaCalculator

Inherits:
Object
  • Object
show all
Defined in:
lib/capybara/screenshot/diff/area_calculator.rb

Instance Method Summary collapse

Constructor Details

#initialize(crop_coordinates, skip_area) ⇒ AreaCalculator

Returns a new instance of AreaCalculator.



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# File 'lib/capybara/screenshot/diff/area_calculator.rb', line 7

def initialize(crop_coordinates, skip_area)
  @crop_coordinates = crop_coordinates
  @skip_area = skip_area
end

Instance Method Details

#calculate_crop ⇒ Object 



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# File 'lib/capybara/screenshot/diff/area_calculator.rb', line 12

def calculate_crop
  return @_calculated_crop if defined?(@_calculated_crop)
  return @_calculated_crop = nil unless @crop_coordinates

  # TODO: Move out from this class, this should be done on before screenshot and should not depend on Browser
  @crop_coordinates = BrowserHelpers.bounds_for_css(@crop_coordinates).first if @crop_coordinates.is_a?(String)
  @_calculated_crop = Region.from_edge_coordinates(*@crop_coordinates)
end

#calculate_skip_area ⇒ Object

Cast skip areas params into Region and if there is crop then makes absolute coordinates to eb relative to crop top left corner



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# File 'lib/capybara/screenshot/diff/area_calculator.rb', line 23

def calculate_skip_area
  return nil unless @skip_area

  crop_region = calculate_crop
  skip_area = Array(@skip_area)

  css_selectors, coords_list = skip_area.compact.partition { |region| region.is_a? String }
  regions, coords_list = coords_list.partition { |region| region.is_a? Region }

  regions.concat(build_regions_for(BrowserHelpers.bounds_for_css(*css_selectors))) unless css_selectors.empty?
  regions.concat(build_regions_for(coords_list.flatten.each_slice(4))) unless coords_list.empty?

  regions.compact!

  if crop_region
    regions
      .map! { |region| crop_region.find_relative_intersect(region) }
      .filter! { |region| region&.present? }
  end

  regions
end