Module: Balloon::Processing

Extended by:
ActiveSupport::Concern
Defined in:
lib/balloon/processing.rb

Defined Under Namespace

Modules: ClassMethods

Instance Method Summary collapse

Instance Method Details

#auto_orient!(img, covert) ⇒ Object 



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# File 'lib/balloon/processing.rb', line 124

def auto_orient!(img, covert)
  if img.exif["Orientation"].to_i > 1
    convert.auto_orient
  end
end

#get_image_data(img) ⇒ Object 



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# File 'lib/balloon/processing.rb', line 130

def get_image_data(img)
  return {
    width: img.width,
    height: img.height,
    size: img.size
  }
end

#handle_original(file, ext) ⇒ Object 



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# File 'lib/balloon/processing.rb', line 37

def handle_original(file, ext)
  original_image =  MiniMagick::Image.open(file.path)
  convert = MiniMagick::Tool::Convert.new
  convert << file.path

  auto_orient!(original_image, convert)
  convert.format ext

  cache_file = File.join(cache_path, "#{file.basename}.#{ext}")
  convert << cache_file
  convert.call

  return MiniMagick::Image.open(cache_file)
end

#handle_resize(file, ext, data) ⇒ Object 



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# File 'lib/balloon/processing.rb', line 52

def handle_resize(file, ext, data)
  return unless self.respond_to?(:uploader_size)
  return if store_storage.to_s == "upyun" && upyun_is_image
  total_size = 0

  uploader_size.each do |size, o|
    img = MiniMagick::Image.open(file.path)
    raise ProcessError, "process error" unless img

    convert = MiniMagick::Tool::Convert.new
    convert << file.path

    auto_orient!(img, convert)
    convert.format ext

    resize(convert, img, o)
    cache_file = File.join(cache_path, "#{file.basename}_#{size}.#{ext}")
    convert << cache_file
    convert.call

    processed_img = MiniMagick::Image.open(cache_file)
    data[size] = get_image_data(processed_img)
    total_size += processed_img.size
  end

  return total_size
end

#image_processing(image) ⇒ Object 



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# File 'lib/balloon/processing.rb', line 7

def image_processing(image)
  data = {}
  ext = image.extension

  if respond_to?(:uploader_type_format)
    ext = uploader_type_format
  end

  processed_img = handle_original(image, ext)
  data[:original] = get_image_data(processed_img)

  total_size = handle_resize(image, ext, data)
  data[:total_size] = processed_img.size.to_i + total_size.to_i

  mime_type = processed_img.mime_type
  extension = FileExtension.get_extension(mime_type)
  filename = "#{image.basename}.#{extension}"

  return {
    basename: image.basename,
    width: processed_img.width,
    height: processed_img.height,
    size: processed_img.size,
    filename: filename,
    mime_type: mime_type,
    extension: extension,
    data: data
  }
end

#resize(convert, image, size) ⇒ Object 



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# File 'lib/balloon/processing.rb', line 80

def resize(convert, image, size)
  width, height, symbol = size[:width], size[:height], size[:symbol]

  if !symbol.empty? || width.match(/\%/) || height.match(/\%/)
    if width == height
      shave(convert, image)
      convert.resize "#{width}"
    else
      convert.resize "#{width}x#{height}#{symbol}"
    end
    return
  end

  if width == height
    shave(convert, image)
    value = (width.to_f / image[:width].to_f) * 100
    convert.resize "#{value}%"
    return
  end

  if width.empty?
    value = (height.to_f / image[:height].to_f)  * 100
    convert.resize "#{value}%"
  elsif height.empty?
    value = (width.to_f / image[:width].to_f)  * 100
    convert.resize "#{value}%"
  else
    convert.resize "#{width}x#{height}"
  end
end

#shave(convert, image) ⇒ Object 



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# File 'lib/balloon/processing.rb', line 111

def shave(convert, image)
  w, h = image[:width], image[:height]

  if w > h
    shave_off = ((w - h) / 2).round
    convert.shave "#{shave_off}x0"
    return
  end

  shave_off = ((h - w) / 2).round
  convert.shave "0x#{shave_off}"
end