Class: LaserBlob::Blob::Image

Inherits:
LaserBlob::Blob show all
Defined in:
app/models/laserblob/blob/image.rb

Instance Attribute Summary

Attributes inherited from LaserBlob::Blob

#data

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from LaserBlob::Blob

#extension, #file, #file=, new, #open, #url, #url=

Methods included from LaserBlob::BlobHelpers

#file_content_type, #file_sha1, filename_from_file

Class Method Details

.process(record, path) ⇒ Object 



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# File 'app/models/laserblob/blob/image.rb', line 26

def self.process(record, path)
  require 'vips' unless defined?(Vips)

  vips = Vips::Image.new_from_file(path)
  record.metadata = {
    'width' =>      vips.width,
    'height' =>     vips.height,
    'dominant_color' => vips.thumbnail_image(1).getpoint(0, 0).join(","),
    'background_color' => vips.getpoint(0,0).join(",")
  }
end

Instance Method Details

#aspect_ratio ⇒ Object 



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# File 'app/models/laserblob/blob/image.rb', line 21

def aspect_ratio
  return nil unless self.width && self.height
  self.width.to_f / self.height.to_f
end

#background_color ⇒ Object 



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# File 'app/models/laserblob/blob/image.rb', line 17

def background_color
  metadata['background_color']
end

#dominant_color ⇒ Object 



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# File 'app/models/laserblob/blob/image.rb', line 13

def dominant_color
  metadata['dominant_color']
end

#height ⇒ Object 



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# File 'app/models/laserblob/blob/image.rb', line 9

def height
  metadata['height']
end

#width ⇒ Object 



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# File 'app/models/laserblob/blob/image.rb', line 5

def width
  metadata['width']
end