Crop an image in PrawnPdf

gistfile1.txt

bounding_box([bounds.width * 0.5, cursor], width: 200, height: 113) do
  image_width = 200
  image_height = 113
  crop_size = 20
  save_graphics_state do
    soft_mask do
      fill_color 0, 0, 0, 0
      fill_rectangle [crop_size, image_height - crop_size], image_width - crop_size * 2, image_height - crop_size * 2
     end
     image "#{IMAGES_PATH}/cat.jpg", at: [bounds.left, bounds.top], width: image_width, height: image_height
  end
  stroke_bounds
end