Class: ShotwellFS::Transform

Inherits:
Object
  • Object
show all
Defined in:
lib/shotwellfs/transform.rb

Defined Under Namespace

Classes: Crop, RedEye

Constant Summary collapse

VERSION =

Bump this if the transformation code changes in a way that would change the images

1

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(transformations) ⇒ Transform

Returns a new instance of Transform.



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# File 'lib/shotwellfs/transform.rb', line 149

def initialize(transformations)
    doc = IniParse.parse(transformations)
    @crop = doc.has_section?("crop") ? Crop.new(doc["crop"]) : nil
    @redeye = doc.has_section?("redeye") ? RedEye.new(doc["redeye"]) : nil
end

Instance Attribute Details

#crop ⇒ Object (readonly)

Returns the value of attribute crop.



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# File 'lib/shotwellfs/transform.rb', line 12

def crop
  @crop
end

#redeye ⇒ Object (readonly)

Returns the value of attribute redeye.



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# File 'lib/shotwellfs/transform.rb', line 12

def redeye
  @redeye
end

Instance Method Details

#apply(input, output) ⇒ Object 



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# File 'lib/shotwellfs/transform.rb', line 167

def apply(input,output)
    image = Magick::Image.read(input)[0]
    image.format = "JPG"

    redeye.apply(image) if redeye
    crop.apply(image) if crop

    image.write(output)
    image.destroy!
end

#generate_id(photo_id) ⇒ Object 



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# File 'lib/shotwellfs/transform.rb', line 159

def generate_id(photo_id)
    if has_transforms?
        Digest::MD5.hexdigest("#{photo_id}:#{self}")
    else 
        nil
    end
end

#has_transforms? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/shotwellfs/transform.rb', line 155

def has_transforms?
    ( crop || redeye ) && true
end

#to_s ⇒ Object 



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# File 'lib/shotwellfs/transform.rb', line 178

def to_s
    xforms = [ redeye, crop ].reject { |x| x.nil? }.join("\n  ")
    "#{self.class.name}:#{VERSION}\n  #{xforms}"
end