Class: ImageProcessing::MiniMagick::Processor

Inherits:
Processor
  • Object
show all
Defined in:
lib/image_processing/mini_magick.rb

Constant Summary collapse

IMAGE_CLASS = 
::MiniMagick::Tool
SHARPEN_PARAMETERS = 
{ radius: 0, sigma: 1 }

Instance Method Summary collapse

Methods inherited from Processor

#apply_operation, #custom, #initialize

Constructor Details

This class inherits a constructor from ImageProcessing::Processor

Instance Method Details

#append(magick, *args) ⇒ Object 



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# File 'lib/image_processing/mini_magick.rb', line 67

def append(magick, *args)
  magick.merge! args
end

#define(magick, options) ⇒ Object 



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# File 'lib/image_processing/mini_magick.rb', line 46

def define(magick, options)
  return magick.define(options) if options.is_a?(String)

  options.each do |namespace, options|
    namespace = namespace.to_s.gsub("_", "-")

    options.each do |key, value|
      key = key.to_s.gsub("_", "-")

      magick.define "#{namespace}:#{key}=#{value}"
    end
  end

  magick
end

#limits(magick, options) ⇒ Object 



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# File 'lib/image_processing/mini_magick.rb', line 62

def limits(magick, options)
  limit_args = options.flat_map { |type, value| %W[-limit #{type} #{value}] }
  prepend_args(magick, limit_args)
end

#load_image(path_or_magick, page: nil, geometry: nil, auto_orient: true, **options) ⇒ Object 



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# File 'lib/image_processing/mini_magick.rb', line 71

def load_image(path_or_magick, page: nil, geometry: nil, auto_orient: true, **options)
  if path_or_magick.is_a?(::MiniMagick::Tool)
    magick = path_or_magick
  else
    source_path = path_or_magick
    magick = ::MiniMagick::Tool::Convert.new

    apply_options(magick, options)

    input_path  = source_path
    input_path += "[#{page}]" if page
    input_path += "[#{geometry}]" if geometry

    magick << input_path
  end

  magick.auto_orient if auto_orient
  magick
end

#resize_and_pad(magick, width, height, background: :transparent, gravity: "Center", **options) ⇒ Object 



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# File 'lib/image_processing/mini_magick.rb', line 37

def resize_and_pad(magick, width, height, background: :transparent, gravity: "Center", **options)
  background = "rgba(255,255,255,0.0)" if background.to_s == "transparent"

  thumbnail(magick, "#{width}x#{height}", **options)
  magick.background background
  magick.gravity gravity
  magick.extent "#{width}x#{height}"
end

#resize_to_fill(magick, width, height, gravity: "Center", **options) ⇒ Object 



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# File 'lib/image_processing/mini_magick.rb', line 30

def resize_to_fill(magick, width, height, gravity: "Center", **options)
  thumbnail(magick, "#{width}x#{height}^", **options)
  magick.gravity gravity
  magick.background "rgba(255,255,255,0.0)" # transparent
  magick.extent "#{width}x#{height}"
end

#resize_to_fit(magick, width, height, **options) ⇒ Object 



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# File 'lib/image_processing/mini_magick.rb', line 26

def resize_to_fit(magick, width, height, **options)
  thumbnail(magick, "#{width}x#{height}", **options)
end

#resize_to_limit(magick, width, height, **options) ⇒ Object 



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# File 'lib/image_processing/mini_magick.rb', line 22

def resize_to_limit(magick, width, height, **options)
  thumbnail(magick, "#{width}x#{height}>", **options)
end

#save_image(magick, destination_path, allow_splitting: false, **options) ⇒ Object 



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# File 'lib/image_processing/mini_magick.rb', line 91

def save_image(magick, destination_path, allow_splitting: false, **options)
  apply_options(magick, options)

  magick << destination_path
  magick.call

  disallow_split_layers!(destination_path) unless allow_splitting
end