Module: QuickMagickProcessor

Defined in:
lib/processors/quick_magick.rb

Overview

Add to rtesseract a image manipulation with QuickMagick

Class Method Summary collapse

Class Method Details

.a_name?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/processors/quick_magick.rb', line 8

def self.a_name?(name)
  %w(quick_magick QuickMagickProcessor).include?(name.to_s)
end

.image?(object) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/processors/quick_magick.rb', line 30

def self.image?(object)
  object.class == QuickMagick::Image
end

.image_to_tif(source, x = nil, y = nil, w = nil, h = nil) ⇒ Object 



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# File 'lib/processors/quick_magick.rb', line 12

def self.image_to_tif(source, x = nil, y = nil, w = nil, h = nil)
  tmp_file = Tempfile.new(['', '.tif'])
  cat = source.is_a?(Pathname) ? read_with_processor(source.to_s) : source
  cat.compress = 'None'
  cat.format = 'tif'
  cat.crop("#{w}x#{h}+#{x}+#{y}") if need_crop?( x, y, w, h)
  cat.write tmp_file.path.to_s
  tmp_file
end

.need_crop?(x = nil, y = nil, w = nil, h = nil) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/processors/quick_magick.rb', line 22

def self.need_crop?(x = nil, y = nil, w = nil, h = nil)
  x.to_f + y.to_f + w.to_f + h.to_f > 0
end

.read_with_processor(path) ⇒ Object 



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# File 'lib/processors/quick_magick.rb', line 26

def self.read_with_processor(path)
  QuickMagick::Image.read(path.to_s).first
end

.setup ⇒ Object 



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# File 'lib/processors/quick_magick.rb', line 4

def self.setup
  require 'quick_magick'
end