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require 'rmagick'
# Demonstrate the trim method
# Read the Flower_Hat image and reduce it to 80% of its original size.
img = Magick::Image.read('images/Flower_Hat.jpg').first
cols = img.columns
rows = img.rows
img.resize!(0.80)
# Add a gray border to bring it back up to size
before = img.border((cols - img.columns) / 2, (rows - img.rows) / 2, '#999')
# Trim away the gray border
after = before.trim
# Add a white border to bring it back up to size
after.border!((cols - img.columns) / 2, (rows - img.rows) / 2, 'white')
# Need GIF for tranparency
before.write('trim_before.jpg')
after.write('trim_after.jpg')
exit
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