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86 lines
3.2 KiB
86 lines
3.2 KiB
#-- encoding: UTF-8
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#-- copyright
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# OpenProject is an open source project management software.
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# Copyright (C) 2012-2020 the OpenProject GmbH
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License version 3.
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#
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# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
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# Copyright (C) 2006-2017 Jean-Philippe Lang
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# Copyright (C) 2010-2013 the ChiliProject Team
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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# See docs/COPYRIGHT.rdoc for more details.
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#++
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module WorkPackage::PDFExport::Attachments
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##
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# Creates cells for each attachment of the work package
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#
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def make_attachments_cells(attachments)
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# Distribute all attachments on one line, this will work well with up to ~5 attachments.
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# more than that will be resized further
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available_width = (pdf.bounds.width / attachments.length) * 0.98
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attachments
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.map { |attachment| make_attachment_cell attachment, available_width }
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.compact
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end
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private
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def make_attachment_cell(attachment, available_width)
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# We can only include JPG and PNGs, maybe we want to add a text box for other attachments here
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return nil unless pdf_embeddable?(attachment)
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# Access the local file. For Carrierwave attachments, this will be blocking.
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file_path = attachment.file.local_file.path
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# Let's not include the raw images as the sum of all images can hit the memory limit of the worker process.
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# As we do not need the full image size when printing small images into the PDF let's reduce it on the fly.
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# It uses CPU and time. However, we don't expect that feature to get used often.
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resized_file_path = resize_image(file_path)
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# Fit the image roughly in the center of each cell
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pdf.make_cell(image: resized_file_path, fit: [available_width, 125], position: :center)
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rescue => e
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Rails.logger.error { "Failed to attach work package image to PDF: #{e} #{e.message}" }
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nil
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end
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def resize_image(file_path)
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resized_file_path = extend_file_name_in_path(file_path, '__x325')
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image = MiniMagick::Image.open(file_path)
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image.resize("x325")
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image.write(resized_file_path)
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resized_file_path
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end
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def extend_file_name_in_path(file_path, name_suffix)
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dir_path = File.dirname(file_path)
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file_extension = File.extname(file_path)
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file_name = File.basename(file_path, '.*')
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File.join(dir_path, "#{file_name}#{name_suffix}#{file_extension}")
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end
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def pdf_embeddable?(attachment)
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%w[image/jpeg image/png].include?(attachment.content_type)
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end
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end
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