Module: Tzispa::Experts::Image

Defined in:
lib/tzispa/experts/image.rb

Defined Under Namespace

Classes: ImageError

Instance Method Summary collapse

Instance Method Details

#image_valid?(source) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/tzispa/experts/image.rb', line 46

def image_valid?(source)
  File.exist?(source) && MiniMagick::Image.new(source).valid?
end

#request_upload_image(param:, path:, save_as: nil, keep_ext: true, crop: false, size: nil) ⇒ Object 



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# File 'lib/tzispa/experts/image.rb', line 50

def request_upload_image(param:, path:, save_as: nil, keep_ext: true, crop: false, size: nil)
  if result = request_upload_file( param: param, path: path, save_as: save_as, keep_ext: keep_ext )
    resize_crop_image( source: result[:path], image_size: size ) if crop
  end
  result
end

#resize_crop_image(source:, image_size: nil, dest_file: nil, qualiy: 90, crop: false) ⇒ Object 



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# File 'lib/tzispa/experts/image.rb', line 26

def resize_crop_image(source:, image_size: nil, dest_file: nil, qualiy: 90, crop: false)
  begin
    image_file = dest_file || source
    if image_size && MiniMagick::Tool::Convert.new do |convert|
        convert.merge! [source, '-resize', image_size, "-quality", "#{qualiy}", image_file]
      end
    end
    if crop
      crop_info = MiniMagick::Tool::Convert.new do |convert|
        convert.merge! [image_file, "-virtual-pixel", " edge", "-blur", "0x15", "-fuzz", "15%", "-trim", "-format", "'%[fx:w+72]x%[fx:h+72]+%[fx:page.x-10]+%[fx:page.y-10]'", "info:" ]
      end if crop
      MiniMagick::Tool::Convert.new do |convert|
        convert.merge! [ image_file, "-crop", "#{crop_info.delete("'")}", "+repage", "-strip", "-interlace", "Plane", "-gaussian-blur", "0.05", image_file ]
      end
    end
  rescue Exception => ex
    raise ImageError.new "Error in resize_crop_image '#{source}': #{ex.class} #{ex.message}"
  end
end

#save_image(url, dest_file) ⇒ Object 



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# File 'lib/tzispa/experts/image.rb', line 12

def save_image(url, dest_file)
  begin
    File.open("#{dest_file}", 'wb') do |fo|
      fo.write open(url).read
    end
    unless image_valid?(dest_file)
      FileUtils.rm dest_file, :force => true
    end
  rescue Exception => ex
    raise ImageError.new "Error in crawler_save_file '#{url}': #{ex.class} #{ex.message}"
  end
end