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Contents
require_relative 'base'
module Udongo
module ImageManipulation
class ResizeToFill
include Udongo::ImageManipulation::Base
# Resize the image to fit within the specified dimensions while retaining
# the aspect ratio of the original image. If necessary, crop the image in the
# larger dimension.
#
# Possible values for options[:gravity] are:
# NorthWest, North, NorthEast, West, Center, East, SouthWest, South, SouthEast
#
def resize(path)
gravity = @options.key?(:gravity) ? @options[:gravity] : 'Center'
img = MiniMagick::Image.open(@file)
cols, rows = img[:dimensions]
img.combine_options do |cmd|
if @width != cols || @height != rows
scale_x = @width/cols.to_f
scale_y = @height/rows.to_f
if scale_x >= scale_y
cols = (scale_x * (cols + 0.5)).round
rows = (scale_x * (rows + 0.5)).round
cmd.resize "#{cols}"
else
cols = (scale_y * (cols + 0.5)).round
rows = (scale_y * (rows + 0.5)).round
cmd.resize "x#{rows}"
end
end
cmd.quality @options[:quality] if @options.key?(:quality)
cmd.gravity gravity
cmd.background 'rgba(255,255,255,0.0)'
cmd.extent "#{@width}x#{@height}" if cols != @width || rows != @height
end
img.write(path)
end
end
end
end
Version data entries
53 entries across 53 versions & 1 rubygems