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Contents
# encoding: utf-8
# image.rb : Base class for image info objects
#
# Copyright September 2011, Brad Ediger. All rights reserved.
#
# This is free software. Please see the LICENSE and COPYING files for details.
require 'digest/sha1'
module Prawn
module Images
class Image
# @group Extension API
def calc_image_dimensions(options)
w = options[:width] || width
h = options[:height] || height
if options[:width] && !options[:height]
wp = w / width.to_f
w = width * wp
h = height * wp
elsif options[:height] && !options[:width]
hp = h / height.to_f
w = width * hp
h = height * hp
elsif options[:scale]
w = width * options[:scale]
h = height * options[:scale]
elsif options[:fit]
bw, bh = options[:fit]
bp = bw / bh.to_f
ip = width / height.to_f
if ip > bp
w = bw
h = bw / ip
else
h = bh
w = bh * ip
end
end
self.scaled_width = w
self.scaled_height = h
[w,h]
end
end
end
end
Version data entries
8 entries across 8 versions & 2 rubygems