Class: Kinu::Geometry

Inherits:
Object
  • Object
show all
Defined in:
lib/kinu/geometry.rb

Constant Summary collapse

AVAILABLE_TYPES = 
{
  width:    :w,
  height:   :h,
  quality:  :q,
  crop:     :c,
  manual_crop: :mc,
  width_offset: :wo,
  height_offset: :ho,
  crop_width: :cw,
  crop_height: :ch,
  assumption_width: :aw,
  original: :o,
  middle:   :m,
}.freeze

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ Geometry

Returns a new instance of Geometry.



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# File 'lib/kinu/geometry.rb', line 18

def initialize(options)
  @options = options
  validate
end

Instance Method Details

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/kinu/geometry.rb', line 38

def empty?
  @options.empty?
end

#to_s ⇒ Object 



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# File 'lib/kinu/geometry.rb', line 42

def to_s
  geo = []
  AVAILABLE_TYPES.each do |full_name, short_name|
    next if @options[full_name].nil?
    geo << "#{short_name}=#{@options[full_name]}"
  end
  geo.join(',')
end

#validate ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/kinu/geometry.rb', line 23

def validate
  raise ArgumentError, "required geometry hash." if empty?

  return if !(@options[:width].nil? && @options[:height].nil?)
  return if @options[:middle] == true
  return if @options[:original] == true

  raise ArgumentError, <<-EOS
invalid geometry, geometry must be met least one condition.
- set width or height any numeric.
- set middle true.
- set original true.
  EOS
end