discourse/lib/image_sizer.rb
Sam Saffron 30990006a9 DEV: enable frozen string literal on all files
This reduces chances of errors where consumers of strings mutate inputs
and reduces memory usage of the app.

Test suite passes now, but there may be some stuff left, so we will run
a few sites on a branch prior to merging
2019-05-13 09:31:32 +08:00

38 lines
986 B
Ruby

# frozen_string_literal: true
module ImageSizer
# Resize an image to the aspect ratio we want
def self.resize(width, height, opts = {})
return if width.blank? || height.blank?
max_width = (opts[:max_width] || SiteSetting.max_image_width).to_f
max_height = (opts[:max_height] || SiteSetting.max_image_height).to_f
w = width.to_f
h = height.to_f
return [w.floor, h.floor] if w <= max_width && h <= max_height
ratio = [max_width / w, max_height / h].min
[(w * ratio).floor, (h * ratio).floor]
end
def self.crop(width, height, opts = {})
return if width.blank? || height.blank?
max_width = (opts[:max_width] || SiteSetting.max_image_width).to_f
max_height = (opts[:max_height] || SiteSetting.max_image_height).to_f
w = width.to_f
h = height.to_f
return [w.floor, h.floor] if w <= max_width && h <= max_height
ratio = max_width / w
[[max_width, w].min.floor, [max_height, (h * ratio)].min.floor]
end
end