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PDF thumbnail generation is not done by ImageMagick [SCI-3579] (#1858)

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PDF thumbnail generation is not done by ImageMagick [SCI-3579]
This commit is contained in:
Jure Grabnar 2019-07-03 11:11:04 +02:00 committed by GitHub
commit f9f1b3340c
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3 changed files with 21 additions and 9 deletions
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1
Dockerfile
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@ -20,6 +20,7 @@ RUN curl -sL https://deb.nodesource.com/setup_8.x | bash - && \
postgresql-client \
default-jre-headless \
unison \
ghostscript \
sudo graphviz --no-install-recommends \
libfile-mimeinfo-perl && \
apt-get install -y --no-install-recommends -t $(cat /tmp/lsb_release)-backports libreoffice && \

1
Dockerfile.production
View file

@ -17,6 +17,7 @@ RUN curl -sL https://deb.nodesource.com/setup_8.x | bash - && \
postgresql-client \
netcat \
default-jre-headless \
ghostscript \
sudo graphviz --no-install-recommends \
libfile-mimeinfo-perl && \
apt-get install -y --no-install-recommends -t stretch-backports libreoffice && \

28
lib/paperclip_processors/custom_file_preview.rb
View file

@ -10,16 +10,26 @@ module Paperclip
dst = TempfileFactory.new.generate("#{basename}.#{options[:format]}")
begin
Paperclip.run(
libreoffice_path,
"--headless --invisible --convert-to png --outdir #{directory} #{@file.path}"
)
if @file.content_type == 'application/pdf'
# We use special convert options for PDFs to improve quality and
# background, we append [0] to convert only the first page
convert(
":source -resize '#{options[:geometry]}' -format #{options[:format]} -flatten -quality 70 :dest",
source: File.expand_path(@file.path) + '[0]',
dest: File.expand_path(dst.path)
)
else
Paperclip.run(
libreoffice_path,
"--headless --invisible --convert-to png --outdir #{directory} #{@file.path}"
)
convert(
":source -resize '#{options[:geometry]}' -format #{options[:format]} #{options[:convert_options]} :dest",
source: File.expand_path(original_preview_file),
dest: File.expand_path(dst.path)
)
convert(
":source -resize '#{options[:geometry]}' -format #{options[:format]} #{options[:convert_options]} :dest",
source: File.expand_path(original_preview_file),
dest: File.expand_path(dst.path)
)
end
ensure
File.delete(original_preview_file) if File.file?(original_preview_file)
end