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configure image quality

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This commit is contained in:
Pete Matsyburka
2024-09-03 18:07:12 +03:00
committed by Oleksandr Turchyn
parent b4884e94f6
commit 2598962c5b
1 changed files with 9 additions and 9 deletions
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lib/templates/process_document.rb
+9 -9
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@@ -15,7 +15,7 @@ module Templates
module_function
def call(attachment, data, extract_fields: false)
def call(attachment, data, extract_fields: false, image_quality: nil)
if attachment.content_type == PDF_CONTENT_TYPE
if extract_fields && data.size < MAX_FLATTEN_FILE_SIZE
pdf = HexaPDF::Document.new(io: StringIO.new(data))
@@ -23,23 +23,23 @@ module Templates
fields = Templates::FindAcroFields.call(pdf, attachment)
end
generate_pdf_preview_images(attachment, data, pdf)
generate_pdf_preview_images(attachment, data, pdf, image_quality:)
attachment.metadata['pdf']['fields'] = fields if fields
elsif attachment.image?
generate_preview_image(attachment, data)
generate_preview_image(attachment, data, image_quality:)
end
attachment
end
def generate_preview_image(attachment, data)
def generate_preview_image(attachment, data, image_quality: nil)
ActiveStorage::Attachment.where(name: ATTACHMENT_NAME, record: attachment).destroy_all
image = Vips::Image.new_from_buffer(data, '')
image = image.autorot.resize(MAX_WIDTH / image.width.to_f)
io = StringIO.new(image.write_to_buffer(FORMAT, Q: Q, interlace: true))
io = StringIO.new(image.write_to_buffer(FORMAT, Q: image_quality || Q, interlace: true))
ActiveStorage::Attachment.create!(
blob: ActiveStorage::Blob.create_and_upload!(
@@ -51,7 +51,7 @@ module Templates
)
end
def generate_pdf_preview_images(attachment, data, pdf = nil)
def generate_pdf_preview_images(attachment, data, pdf = nil, image_quality: nil)
ActiveStorage::Attachment.where(name: ATTACHMENT_NAME, record: attachment).destroy_all
pdf ||= HexaPDF::Document.new(io: StringIO.new(data))
@@ -70,7 +70,7 @@ module Templates
page = Vips::Image.new_from_buffer(data, '', dpi: DPI, page: page_number)
page = page.resize(MAX_WIDTH / page.width.to_f)
io = StringIO.new(page.write_to_buffer(FORMAT, Q: Q, interlace: true))
io = StringIO.new(page.write_to_buffer(FORMAT, Q: image_quality || Q, interlace: true))
ApplicationRecord.no_touching do
ActiveStorage::Attachment.create!(
@@ -117,11 +117,11 @@ module Templates
end
end
def generate_pdf_preview_from_file(attachment, file_path, page_number)
def generate_pdf_preview_from_file(attachment, file_path, page_number, image_quality: nil)
io = StringIO.new
command = [
'pdftocairo', '-jpeg', '-jpegopt', "progressive=y,quality=#{Q},optimize=y",
'pdftocairo', '-jpeg', '-jpegopt', "progressive=y,quality=#{image_quality || Q},optimize=y",
'-scale-to-x', MAX_WIDTH, '-scale-to-y', '-1',
'-r', DPI, '-f', page_number + 1, '-l', page_number + 1,
'-singlefile', Shellwords.escape(file_path), '-'