Module: RMagickProcessor

Defined in:
lib/processors/rmagick.rb

Overview

Add to rtesseract a image manipulation with RMagick

Class Method Summary collapse

Class Method Details

.a_name?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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

def self.a_name?(name)
  %w(rmagick RMagickProcessor).include?(name.to_s)
end

.image?(object) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/processors/rmagick.rb', line 32

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

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



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# File 'lib/processors/rmagick.rb', line 16

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.crop!(x, y, w, h) unless [x, y, w, h].compact == []
  cat.alpha Magick::DeactivateAlphaChannel
  cat.write(tmp_file.path.to_s) {
    # self.depth = 16
    self.compression = Magick::NoCompression
  }
  tmp_file
end

.read_with_processor(path) ⇒ Object 



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# File 'lib/processors/rmagick.rb', line 28

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

.setup ⇒ Object 



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

def self.setup
  require 'rmagick'
rescue LoadError
  # :nocov:
  require 'RMagick'
  # :nocov:
end