Module: DotDiff::Image::Cropper

Included in:
Snapshot
Defined in:
lib/dotdiff/image/cropper.rb

Instance Method Summary collapse

Instance Method Details

#crop_and_resave(element) ⇒ Object 



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# File 'lib/dotdiff/image/cropper.rb', line 8

def crop_and_resave(element)
  image = load_image(fullscreen_file)

  # @see http://www.imagemagick.org/script/command-line-options.php?#crop
  crop_area =
    '' + width(element, image).to_s +
    'x' + height(element, image).to_s +
    '+' + element.rectangle.x.floor.to_s +
    '+' + element.rectangle.y.floor.to_s

  image.crop crop_area
  image.write(cropped_file)
end

#height(element, image) ⇒ Object 



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# File 'lib/dotdiff/image/cropper.rb', line 26

def height(element, image)
  element_height = element.rectangle.height + element.rectangle.y
  image_height = image.height

  if element_height > image_height
    image_height - element.rectangle.y
  else
    element.rectangle.height
  end
end

#load_image(file) ⇒ Object 



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# File 'lib/dotdiff/image/cropper.rb', line 22

def load_image(file)
  MiniMagick::Image.open(file)
end

#width(element, image) ⇒ Object 



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# File 'lib/dotdiff/image/cropper.rb', line 37

def width(element, image)
  element_width = element.rectangle.width + element.rectangle.x
  image_width = image.width

  if element_width > image_width
    image_width - element.rectangle.x
  else
    element.rectangle.width
  end
end