Class: Rpub::Epub::Content

Inherits:
XmlFile
  • Object
show all
Defined in:
lib/rpub/epub/content.rb

Constant Summary collapse

MEDIA_TYPES = 
{
  'png' => 'image/png',
  'gif' => 'image/gif',
  'jpg' => 'image/jpeg',
  'svg' => 'image/svg+xml'
}

Instance Attribute Summary collapse

Attributes inherited from XmlFile

#xml

Instance Method Summary collapse

Methods inherited from XmlFile

#to_s

Constructor Details

#initialize(book) ⇒ Content

Returns a new instance of Content.



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# File 'lib/rpub/epub/content.rb', line 13

def initialize(book)
  @book = book
  super()
end

Instance Attribute Details

#book ⇒ Object (readonly)

Returns the value of attribute book.



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# File 'lib/rpub/epub/content.rb', line 4

def book
  @book
end

Instance Method Details

#render ⇒ Object 



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# File 'lib/rpub/epub/content.rb', line 18

def render
  xml.instruct!
  xml.declare! :DOCTYPE, :package, :PUBLIC,  '-//W3C//DTD XHTML 1.1//EN', 'http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd'
  xml.package 'xmlns' => 'http://www.idpf.org/2007/opf', 'unique-identifier' => 'BookId', 'version' => '2.0' do
    xml.metadata 'xmlns:dc' => 'http://purl.org/dc/elements/1.1/', 'xmlns:opf' => 'http://www.idpf.org/2007/opf' do
      xml.dc :language,    book.language
      xml.dc :title,       book.title
      xml.dc :creator,     book.creator, 'opf:role' => 'aut'
      xml.dc :publisher,   book.publisher
      xml.dc :subject,     book.subject
      xml.dc :identifier,  book.uid, :id => 'BookId'
      xml.dc :rights,      book.rights
      xml.dc :description, book.description

      if book.has_cover?
        xml.meta :name => 'cover', :content => 'cover-image'
      end
    end

    xml.manifest do
      xml.item 'id' => 'ncx', 'href' => 'toc.ncx', 'media-type' => 'application/x-dtbncx+xml'
      xml.item 'id' => 'css', 'href' => 'styles.css', 'media-type' => 'text/css'

      if book.has_fonts?
        book.fonts.each do |font|
          xml.item 'id' => File.basename(font), 'href' => font, 'media-type' => 'font/opentype'
        end
      end

      if book.has_cover?
        xml.item 'id' => 'cover', 'href' => 'cover.html', 'media-type' => 'application/xhtml+xml'
        xml.item 'id' => 'cover-image', 'href' => book.cover_image, 'media-type' => guess_media_type(book.cover_image)
      end

      book.images.each do |image|
        xml.item 'id' => File.basename(image), 'href' => image, 'media-type' => guess_media_type(image)
      end

      if book.has_toc?
        xml.item 'id' => 'toc', 'href' => 'toc.html', 'media-type' => 'application/xhtml+xml'
      end

      book.chapters.each do |chapter|
        xml.item 'id' => chapter.xml_id, 'href' => chapter.filename, 'media-type' => 'application/xhtml+xml'
      end
    end

    xml.spine 'toc' => 'ncx' do
      if book.has_cover?
        xml.itemref 'idref' => 'cover', 'linear' => 'no'
      end
      book.chapters.each do |chapter|
        xml.itemref 'idref' => chapter.xml_id
      end
    end

    if book.has_cover? || book.has_toc?
      xml.guide do
        if book.has_cover?
          xml.reference :type => 'cover', :title => 'Cover', :href => 'cover.html'
        end
        if book.has_toc?
          xml.reference :type => 'toc',   :title => 'Table of Contents', :href => 'toc.html'
        end
      end
    end
  end
end