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only convert pasted images to HQ jpg when it's at least 5% smaller

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This commit is contained in:
Régis Hanol 2016-07-27 19:55:13 +02:00
parent a3f39866ab
commit be099bb637
1 changed files with 9 additions and 4 deletions
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13
app/controllers/uploads_controller.rb
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@ -72,11 +72,16 @@ class UploadsController < ApplicationController
# convert pasted images to HQ jpegs
if filename == "blob.png" && SiteSetting.convert_pasted_images_to_hq_jpg
filename = "blob.jpg"
jpeg_path = "#{File.dirname(tempfile.path)}/#{filename}"
content_type = "image/jpeg"
jpeg_path = "#{File.dirname(tempfile.path)}/blob.jpg"
`convert #{tempfile.path} -quality 95 #{jpeg_path}`
tempfile = File.open(jpeg_path)
# only change the format of the image when JPG is at least 5% smaller
if File.size(jpeg_path) < File.size(tempfile.path) * 0.95
filename = "blob.jpg"
content_type = "image/jpeg"
tempfile = File.open(jpeg_path)
else
File.delete(jpeg_path) rescue nil
end
end
# allow users to upload large images that will be automatically reduced to allowed size