Module: ActionView::Helpers

Defined in:
lib/bcms_thumbnail/bcms_thumbnail.rb

Class Method Summary collapse

Class Method Details

.thumbnail(attachment_obj, geometry = '100x100') ⇒ Object 



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# File 'lib/bcms_thumbnail/bcms_thumbnail.rb', line 7

def thumbnail(attachment_obj,geometry = '100x100')
  thumbnail_engine(attachment_obj,geometry,false)
end

.thumbnail_engine(attachment_obj, geometry = '100x100', square = false) ⇒ Object 



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# File 'lib/bcms_thumbnail/bcms_thumbnail.rb', line 19

def thumbnail_engine(attachment_obj,geometry = '100x100',square = false)
  if ! attachment_obj.blank? && attachment_obj.respond_to?('attachment') && ['jpg','png','gif','bmp'].include?(attachment_obj.attachment.file_extension.downcase)
    thumbnail_location = "/bcms_thumbnail_cache/#{geometry}/#{attachment_obj.attachment.file_location.gsub(/[\\\/]/,'-')}#{(square) ? '-square' : ''}.jpg"
    if ! File.exists?("#{RAILS_ROOT}/public#{thumbnail_location}")
      if ! File.exists?("#{RAILS_ROOT}/public/bcms_thumbnail_cache/#{geometry}")
        FileUtils.mkdir_p("#{RAILS_ROOT}/public/bcms_thumbnail_cache/#{geometry}")
        FileUtils.chmod 0755, "#{RAILS_ROOT}/public/bcms_thumbnail_cache/"
        FileUtils.chmod 0755, "#{RAILS_ROOT}/public/bcms_thumbnail_cache/#{geometry}"
      end
      image = MiniMagick::Image.from_file("#{RAILS_ROOT}/tmp/uploads/#{attachment_obj.attachment.file_location}")
      if square
        if image[:width] < image[:height]
          remove = ((image[:height] - image[:width])/2).round
          image.shave "0x#{remove}"
        elsif image[:width] > image[:height]
          remove = ((image[:width] - image[:height])/2).round
          image.shave "#{remove}x0"
        end
        image.resize "#{geometry}x#{geometry}"
      else
        image.resize geometry
      end
      image.write("#{RAILS_ROOT}/public#{thumbnail_location}")
      FileUtils.chmod 0644, "#{RAILS_ROOT}/public#{thumbnail_location}"
      URI::escape(thumbnail_location)
    else
      URI::escape(thumbnail_location)
    end
  else
    logger.warn("bcms_thumbnail: Either the attachment object doesn't accept attachments, you passed us a blank object, or the attachment type can't be thumbnailed.")
    '/image-not-found'
  end
end

.thumbnail_square(attachment_obj, geometry = '100') ⇒ Object 



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# File 'lib/bcms_thumbnail/bcms_thumbnail.rb', line 11

def thumbnail_square(attachment_obj,geometry = '100')
  fixed_geometry = geometry
  if geometry.match(/\D/)
    fixed_geometry = geometry.split(/\D/)[0]
  end
  thumbnail_engine(attachment_obj,geometry,true)
end