DGNum/demarches-normaliennes
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fix: uninterlace only interlaced png

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This commit is contained in:
Christophe Robillard 2023-09-21 15:19:21 +02:00 committed by krichtof
parent 46edaed6bc
commit 7529294845
1 changed files with 6 additions and 1 deletions
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7
app/controllers/concerns/uninterlace_png_concern.rb
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@ -4,11 +4,16 @@ module UninterlacePngConcern
private
def uninterlace_png(uploaded_file)
if uploaded_file&.content_type == 'image/png'
if uploaded_file&.content_type == 'image/png' && interlaced?(uploaded_file.tempfile.to_path)
chunky_img = ChunkyPNG::Image.from_io(uploaded_file.to_io)
chunky_img.save(uploaded_file.tempfile.to_path, interlace: false)
uploaded_file.tempfile.reopen(uploaded_file.tempfile.to_path, 'rb')
end
uploaded_file
end
def interlaced?(png_path)
png = MiniMagick::Image.open(png_path)
png.data["interlace"] != "None"
end
end