discourse/lib/image_sizer.rb

35 lines
945 B
Ruby

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.floor, [max_height, (h * ratio)].min.floor]
end
end