diff options
Diffstat (limited to 'activestorage/lib/active_storage/previewer/pdf_previewer.rb')
-rw-r--r-- | activestorage/lib/active_storage/previewer/pdf_previewer.rb | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/activestorage/lib/active_storage/previewer/pdf_previewer.rb b/activestorage/lib/active_storage/previewer/pdf_previewer.rb new file mode 100644 index 0000000000..b84aefcc9c --- /dev/null +++ b/activestorage/lib/active_storage/previewer/pdf_previewer.rb @@ -0,0 +1,24 @@ +# frozen_string_literal: true + +module ActiveStorage + class Previewer::PDFPreviewer < Previewer + class_attribute :mutool_path, default: "mutool" + + def self.accept?(blob) + blob.content_type == "application/pdf" + end + + def preview + download_blob_to_tempfile do |input| + draw_first_page_from input do |output| + yield io: output, filename: "#{blob.filename.base}.png", content_type: "image/png" + end + end + end + + private + def draw_first_page_from(file, &block) + draw mutool_path, "draw", "-F", "png", "-o", "-", file.path, "1", &block + end + end +end |