Class: PDF::TechBook

Inherits:
Writer show all
Defined in:
lib/pdf/techbook.rb

Overview

PDF::TechBook

The TechBook class is a markup language interpreter. This will read a file containing the “TechBook” markukp, described below, and create a PDF document from it. This is intended as a complete document language, but it does have a number of limitations.

The TechBook markup language and class are used to format the PDF::Writer manual, represented in the distrubtion by the file “manual.pwd”.

The TechBook markup language is primarily stream-oriented with awareness of lines. That is to say that the document will be read and generated from beginning to end in the order of the markup stream.

TechBook Markup

TechBook markup is relatively simple. The simplest markup is no markup at all (flowed paragraphs). This means that two lines separated by a single line separator will be treaed as part of the same paragraph and formatted appropriately by PDF::Writer. Paragaphs are terminated by empty lines, valid line markup directives, or valid headings.

Certain XML entitites will need to be escaped as they would in normal XML usage, that is, < must be written as <; > must be written as >; and & must be written as &.

Comments, headings, and directives are line-oriented where the first mandatory character is in the first column of the document and take up the whole line. Styling and callback tags may appear anywhere in the text.

Comments

Comments begin with the hash-mark ('#') at the beginning of the line. Comment lines are ignored.

Styling and Callback Tags

Within normal, preserved, or code text, or in headings, HTML-like markup may be used for bold (&lt;b&gt;) and italic (&lt;i&gt;) text. TechBook supports standard PDF::Writer callback tags (<c:alink>, <c:ilink>, <C:bullet/>, and <C:disc/>) and adds two new ones (<r:xref/>, <C:tocdots/>).

&lt;r:xref/>

Creates an internal document link to the named cross-reference destination. Works with the heading format (see below). See #tag_xref_replace for more information.

&lt;C:tocdots/>

This is used internally to create and display a row of dots between a table of contents entry and the page number to which it refers. This is used internally by TechBook.

Directives

Directives begin with a period ('.') and are followed by a letter ('a'..'z') and then any combination of word characters ('a'..'z', '0'..'9', and '_'). Directives are case-insensitive. A directive may have arguments; if there are arguments, they must follow the directive name after whitespace. After the arguments for a directive, if any, all other text is ignored and may be considered a comment.

.newpage [force]

The .newpage directive starts a new page. If multicolumn mode is on, a new column will be started if the current column is not the last column. If the optional argument force follows the .newpage directive, a new page will be started even if multicolumn mode is on.

.newpage
.newpage force

.pre, .endpre

The .pre and .endpre directives enclose a block of text with preserved newlines. This is similar to normal text, but the lines in the .pre block are not flowed together. This is useful for poetic forms or other text that must end when each line ends. .pre blocks may not be nested in any other formatting block. When an .endpre directive is encountered, the text format will be returned to normal (flowed text) mode.

.pre
The Way that can be told of is not the eternal Way;
The name that can be named is not the eternal name.
The Nameless is the origin of Heaven and Earth;
The Named is the mother of all things.
Therefore let there always be non-being,
  so we may see their subtlety,
And let there always be being,
  so we may see their outcome.
The two are the same,
But after they are produced,
  they have different names.
.endpre

.code, .endcode

The .code and .endcode directives enclose a block of text with preserved newlines. In addition, the font is changed from the normal #techbook_textfont to #techbook_codefont. The #techbook_codefont is normally a fixed pitched font and defaults to Courier. At the end of the code block, the text state is restored to its prior state, which will either be .pre or normal.

.code
require 'pdf/writer'
PDF::Writer.prepress # US Letter, portrait, 1.3, prepress
.endcode

.blist, .endblist

These directives enclose a bulleted list block. Lists may be nested within other text states. If lists are nested, each list will be appropriately indented. Each line in the list block will be treated as a single list item with a bullet inserted in front using either the <C:bullet/> or <C:disc/> callbacks. Nested lists are successively indented. .blist directives accept one optional argument, the name of the type of bullet callback desired (e.g., 'bullet' for <C:bullet/> and 'disc' for <C:disc/>).

.blist
Item 1
.blist disc
Item 1.1
.endblist
.endblist

.eval, .endeval

With these directives, the block enclosed will collected and passed to Ruby's Kernel#eval. .eval blocks may be present within normal text, .pre, .code, and .blist blocks. No other block may be embedded within an .eval block.

.eval
puts "Hello"
.endeval

.columns

Multi-column output is controlled with this directive, which accepts one or two parameters. The first parameter is mandatory and is either the number of columns (2 or more) or the word 'off' (turning off multi-column output). When starting multi-column output, a second parameter with the gutter size may be specified.

.columns 3
Column 1
.newpage
Column 2
.newpage
Column 3
.columns off

.toc

This directive is used to tell TechBook to generate a table of contents after the first page (assumed to be a title page). If this is not present, then a table of contents will not be generated.

.author, .title, .subject, .keywords

Sets values in the PDF information object. The arguments – to the end of the line – are used to populate the values.

.done

Stops the processing of the document at this point.

Headings

Headings begin with a number followed by the rest of the heading format. This format is “#<heading-text>” or “#<heading-text>xref_name”. TechBook supports five levels of headings. Headings may include markup, but should not exceed a single line in size; those headings which have boxes as part of their layout are not currently configured to work with multiple lines of heading output. If an xref_name is specified, then the &lt;r:xref> tag can use this name to find the target for the heading. If xref_name is not specified, then the “name” associated with the heading is the index of the order of insertion. The xref_name is case sensitive.

1<Chapter>xChapter
2<Section>Section23
3<Subsection>
4<Subsection>
5<Subsection>

Heading Level 1

First level headings are generally chapters. As such, the standard implementation of the heading level 1 method (#__heading1), will be rendered as “chapter#. heading-text” in centered white on a black background, at 26 point (H1_STYLE). First level headings are added to the table of contents.

Heading Level 2

Second level headings are major sections in chapters. The headings are rendered by default as black on 80% grey, left-justified at 18 point (H2_STYLE). The text is unchanged (#__heading2). Second level headings are added to the table of contents.

Heading Level 3, 4, and 5

The next three heading levels are used for varying sections within second level chapter sections. They are rendered by default in black on the background (there is no bar) at 18, 14, and 12 points, respectively (H3_STYLE, H4_STYLE, and H5_STYLE). Third level headings are bold-faced (#__heading3); fourth level headings are italicised (#__heading4), and fifth level headings are underlined (#__heading5).

Defined Under Namespace

Classes: TagTocDots, TagXref

Constant Summary collapse

LINE_DIRECTIVE_RE =

:nodoc:

%r{^\.([a-z]\w+)(?:$|\s+(.*)$)}io
H1_STYLE =
{
  :background     => Color::RGB::Black,
  :foreground     => Color::RGB::White,
  :justification  => :center,
  :font_size      => 26,
  :bar            => true
}
H2_STYLE =
{
  :background     => Color::RGB::Grey80,
  :foreground     => Color::RGB::Black,
  :justification  => :left,
  :font_size      => 18,
  :bar            => true
}
H3_STYLE =
{
  :background     => Color::RGB::White,
  :foreground     => Color::RGB::Black,
  :justification  => :left,
  :font_size      => 18,
  :bar            => false
}
H4_STYLE =
{
  :background     => Color::RGB::White,
  :foreground     => Color::RGB::Black,
  :justification  => :left,
  :font_size      => 14,
  :bar            => false
}
H5_STYLE =
{
  :background     => Color::RGB::White,
  :foreground     => Color::RGB::Black,
  :justification  => :left,
  :font_size      => 12,
  :bar            => false
}
HEADING_FORMAT_RE =

:nodoc:

%r{^([\d])<(.*)>([a-z\w]+)?$}o
LIST_ITEM_STYLES =
%w(bullet disc)

Constants inherited from Writer

Writer::ENCRYPT_OPTIONS, Writer::FONT_PATH, Writer::MATCH_TAG_DRAW_ONE_RE, Writer::MATCH_TAG_DRAW_PAIR_RE, Writer::MATCH_TAG_REPLACE_RE, Writer::PAGE_SIZES, Writer::PDF_VERSION_13, Writer::PDF_VERSION_14, Writer::PDF_VERSION_15, Writer::PDF_VERSION_16, Writer::TAGS, Writer::TAG_PARAM_RE, Writer::VERSION

Constants included from Writer::Graphics

Writer::Graphics::KAPPA

Instance Attribute Summary collapse

Attributes inherited from Writer

#absolute_bottom_margin, #absolute_left_margin, #absolute_right_margin, #absolute_top_margin, #absolute_x_middle, #absolute_y_middle, #arc4, #bottom_margin, #catalog, #column_count, #column_gutter, #column_number, #column_width, #compressed, #current_base_font, #current_contents, #current_font, #current_page, #destinations, #encryption_key, #first_page, #font_families, #font_size, #info, #left_margin, #margin_height, #margin_width, #margin_x_middle, #margin_y_middle, #objects, #outlines, #page_height, #page_width, #pages, #pageset, #pointer, #procset, #right_margin, #top_margin, #version, #y

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Writer

#_post_transaction_rewind, #add_content, #add_destination, #add_info, #add_internal_link, #add_link, #add_object, #add_outline_item, #add_text, #add_text_wrap, #append_page, #bleed_box, #check_all_here, #close_object, #cm2pts, cm2pts, #columns?, #compressed?, #current_font!, #current_page_number, escape, #font_descender, #font_height, in2pts, #in2pts, #initialize, #insert_mode, #insert_page, #insert_position, #lines_remaining, #margins_cm, #margins_in, #margins_mm, #margins_pt, mm2pts, #mm2pts, #move_pointer, #new_page, #open_at, #open_here, #open_new_object, #open_object, #page_mode=, prepress, #prepress_center_mark, #prepress_clip_mark, #render, #reopen_object, #restore_state, #save_as, #save_state, #select_font, #size, #start_columns, #start_new_page, #start_page_numbering, #stop_columns, #stop_object, #stop_page_numbering, #text, #text_line_width, #text_width, #trim_box, #viewer_preferences, #which_page_number

Methods included from Writer::Graphics

#add_image, #add_image_from_file, #circle_at, #close, #close_fill, #close_fill_stroke, #close_stroke, #curve, #curve_to, #ecurve, #ecurve_to, #ellipse2_at, #ellipse_at, #fill, #fill_color, #fill_color!, #fill_color?, #fill_stroke, #image, #line, #line_to, #move_to, #polygon, #rectangle, #rotate_axis, #rounded_rectangle, #scale_axis, #scurve, #scurve_to, #segment_at, #skew_axis, #star, #stroke, #stroke_color, #stroke_color!, #stroke_color?, #stroke_style, #stroke_style!, #stroke_style?, #text_render_style, #text_render_style!, #text_render_style?, #transform_matrix, #translate_axis

Constructor Details

This class inherits a constructor from PDF::Writer

Instance Attribute Details

#chapter_numberObject

Returns the value of attribute chapter_number


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# File 'lib/pdf/techbook.rb', line 231

def chapter_number
  @chapter_number
end

#table_of_contentsObject

Returns the value of attribute table_of_contents


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# File 'lib/pdf/techbook.rb', line 230

def table_of_contents
  @table_of_contents
end

#techbook_codefontObject

Returns the value of attribute techbook_codefont


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# File 'lib/pdf/techbook.rb', line 633

def techbook_codefont
  @techbook_codefont
end

#techbook_encodingObject

Returns the value of attribute techbook_encoding


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# File 'lib/pdf/techbook.rb', line 635

def techbook_encoding
  @techbook_encoding
end

#techbook_fontsizeObject

Returns the value of attribute techbook_fontsize


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# File 'lib/pdf/techbook.rb', line 636

def techbook_fontsize
  @techbook_fontsize
end

#techbook_source_dirObject

Returns the value of attribute techbook_source_dir


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# File 'lib/pdf/techbook.rb', line 791

def techbook_source_dir
  @techbook_source_dir
end

#techbook_textfontObject

Returns the value of attribute techbook_textfont


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# File 'lib/pdf/techbook.rb', line 634

def techbook_textfont
  @techbook_textfont
end

#xref_tableObject (readonly)

Returns the value of attribute xref_table


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# File 'lib/pdf/techbook.rb', line 354

def xref_table
  @xref_table
end

Class Method Details

.run(args) ⇒ Object


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# File 'lib/pdf/techbook.rb', line 793

def self.run(args)
  config = OpenStruct.new
  config.regen      = false
  config.cache      = true
  config.compressed = false

  opts = OptionParser.new do |opt|
    opt.banner    = PDF::Writer::Lang[:techbook_usage_banner] % [ File.basename($0) ]
    PDF::Writer::Lang[:techbook_usage_banner_1].each do |ll|
      opt.separator "  #{ll}"
    end
    opt.on('-f', '--force-regen', *PDF::Writer::Lang[:techbook_help_force_regen]) { config.regen = true }
    opt.on('-n', '--no-cache', *PDF::Writer::Lang[:techbook_help_no_cache]) { config.cache = false }
    opt.on('-z', '--compress', *PDF::Writer::Lang[:techbook_help_compress]) { config.compressed = true }
    opt.on_tail ""
    opt.on_tail("--help", *PDF::Writer::Lang[:techbook_help_help]) { $stderr << opt; exit(0) }
  end
  opts.parse!(args)

  config.document = args[0]

  unless config.document
    config.document = "manual.pwd"
    unless File.exist?(config.document)
      dirn = File.dirname(__FILE__)
      config.document = File.join(dirn, File.basename(config.document))
      unless File.exist?(config.document)
        dirn = File.join(dirn, "..")
        config.document = File.join(dirn, File.basename(config.document))
        unless File.exist?(config.document)
          dirn = File.join(dirn, "..")
          config.document = File.join(dirn,
                                      File.basename(config.document))
          unless File.exist?(config.document)
            $stderr.puts PDF::Writer::Lang[:techbook_cannot_find_document]
            exit(1)
          end
        end
      end
    end

    $stderr.puts PDF::Writer::Lang[:techbook_using_default_doc] % config.document
  end

  dirn = File.dirname(config.document)
  extn = File.extname(config.document)
  base = File.basename(config.document, extn)

  files = {
    :document => config.document,
    :cache    => "#{base}._mc",
    :pdf      => "#{base}.pdf"
  }

  unless config.regen
    if File.exist?(files[:cache])
      _tm_doc = File.mtime(config.document)
      _tm_prg = File.mtime(__FILE__)
      _tm_cch = File.mtime(files[:cache])
      
        # If the cached file is newer than either the document or the
        # class program, then regenerate.
      if (_tm_doc < _tm_cch) and (_tm_prg < _tm_cch)
        $stderr.puts PDF::Writer::Lang[:techbook_using_cached_doc] % File.basename(files[:cache])
        if RUBY_VERSION >= '1.9'
          pdf = File.open(files[:cache], "rb:binary") { |cf| Marshal.load(cf.read) }
        else
          pdf = File.open(files[:cache], "rb") { |cf| Marshal.load(cf.read) }
        end
        pdf.save_as(files[:pdf])
        File.open(files[:pdf], "wb") { |pf| pf.write pdf.render }
        exit(0)
      else
        $stderr.puts PDF::Writer::Lang[:techbook_regenerating]
      end
    end
  else
    $stderr.puts PDF::Writer::Lang[:techbook_ignoring_cache] if File.exist?(files[:cache])
  end

    # Create the manual object.
  pdf = PDF::TechBook.new
  pdf.compressed = config.compressed
  pdf.techbook_source_dir = File.expand_path(dirn)

  document = open(files[:document]) { |io| io.read.split($/) }
  progress = ProgressBar.new(base.capitalize, document.size)
  pdf.techbook_parse(document, progress)
  progress.finish

  if pdf.generate_table_of_contents?
    progress = ProgressBar.new("TOC", pdf.table_of_contents.size)
    pdf.techbook_toc(progress)
    progress.finish
  end

  if config.cache
    File.open(files[:cache], "wb") { |f| f.write Marshal.dump(pdf) }
  end

  pdf.save_as(files[:pdf])
end

Instance Method Details

#__heading1(heading) ⇒ Object


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# File 'lib/pdf/techbook.rb', line 433

def __heading1(heading)
  @chapter_number ||= 0
  @chapter_number = @chapter_number.succ
  "#{chapter_number}. #{heading}"
end

#__heading2(heading) ⇒ Object


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# File 'lib/pdf/techbook.rb', line 438

def __heading2(heading)
  heading
end

#__heading3(heading) ⇒ Object


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# File 'lib/pdf/techbook.rb', line 441

def __heading3(heading)
  "<b>#{heading}</b>"
end

#__heading4(heading) ⇒ Object


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# File 'lib/pdf/techbook.rb', line 444

def __heading4(heading)
  "<i>#{heading}</i>"
end

#__heading5(heading) ⇒ Object


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# File 'lib/pdf/techbook.rb', line 447

def __heading5(heading)
  "<c:uline>#{heading}</c:uline>"
end

#generate_table_of_contents?Boolean

Returns:

  • (Boolean)

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# File 'lib/pdf/techbook.rb', line 787

def generate_table_of_contents?
  @gen_toc
end

#techbook_directive_author(args) ⇒ Object


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# File 'lib/pdf/techbook.rb', line 746

def techbook_directive_author(args)
  info.author = args
end

#techbook_directive_blist(args) ⇒ Object


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# File 'lib/pdf/techbook.rb', line 764

def techbook_directive_blist(args)
  __render_paragraph
  sm = /^(\w+).*$/o.match(args)
  style = sm.captures[0] if sm
  style = "bullet" unless LIST_ITEM_STYLES.include?(style)

  @blist_factor = @left_margin * 0.10 if @blist_info.empty?

  info = {
    :left_margin  => @left_margin,
    :style        => style
  }
  @blist_info << info
  @left_margin += @blist_factor

  @techbook_lastmode, @techbook_mode = @techbook_mode, :blist if :blist != @techbook_mode
end

#techbook_directive_code(args) ⇒ Object

Code: .code


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# File 'lib/pdf/techbook.rb', line 661

def techbook_directive_code(args)
  __render_paragraph
  select_font @techbook_codefont, @techbook_encoding
  @techbook_lastmode, @techbook_mode = @techbook_mode, :code
  @techbook_textopt  = { :justification => :left, :left => 20, :right => 20 }
  @techbook_fontsize = 10
end

#techbook_directive_columns(args) ⇒ Object

Columns. .columns <number-of-columns>|off


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# File 'lib/pdf/techbook.rb', line 719

def techbook_directive_columns(args)
  av = /^(\d+|off)(?: (\d+))?(?: .*)?$/o.match(args)
  unless av
    $stderr.puts PDF::Writer::Lang[:techbook_bad_columns_directive] % args
    raise ArgumentError
  end
  cols = av.captures[0]

    # Flush the paragraph cache.
  __render_paragraph

  if cols == "off" or cols.to_i < 2
    stop_columns
  else
    if av.captures[1]
      start_columns(cols.to_i, av.captures[1].to_i)
    else
      start_columns(cols.to_i)
    end
  end
end

#techbook_directive_done(args) ⇒ Object

Done. Stop parsing: .done


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# File 'lib/pdf/techbook.rb', line 709

def techbook_directive_done(args)
  unless @techbook_code.empty?
    $stderr.puts PDF::Writer::Lang[:techbook_code_not_empty]
    $stderr.puts @techbook_code
  end
  __render_paragraph
  :break
end

#techbook_directive_endblist(args) ⇒ Object


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# File 'lib/pdf/techbook.rb', line 782

def techbook_directive_endblist(args)
  self.left_margin = @blist_info.pop[:left_margin]
  @techbook_lastmode, @techbook_mode = @techbook_mode, @techbook_lastmode if @blist_info.empty?
end

#techbook_directive_endcode(args) ⇒ Object

End Code: .endcode


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# File 'lib/pdf/techbook.rb', line 670

def techbook_directive_endcode(args)
  select_font @techbook_textfont, @techbook_encoding
  @techbook_lastmode, @techbook_mode = @techbook_mode, @techbook_lastmode
  @techbook_textopt  = { :justification => :full }
  @techbook_fontsize = 12
end

#techbook_directive_endeval(args) ⇒ Object

End Eval: .endeval


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# File 'lib/pdf/techbook.rb', line 684

def techbook_directive_endeval(args)
  save_state

  thread = Thread.new do
    begin
      @techbook_code.untaint
      pdf = self
      eval @techbook_code
    rescue Exception => ex
      err = PDF::Writer::Lang[:techbook_eval_exception]
      $stderr.puts err % [ @techbook_line__, ex, ex.backtrace.join("\n") ]
      raise ex
    end
  end
  thread.abort_on_exception = true
  thread.join

  restore_state
  select_font @techbook_textfont, @techbook_encoding

  @techbook_code = ""
  @techbook_mode, @techbook_lastmode = @techbook_lastmode, @techbook_mode
end

#techbook_directive_endpre(args) ⇒ Object

End preserved newlines: .endpre


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# File 'lib/pdf/techbook.rb', line 656

def techbook_directive_endpre(args)
  @techbook_mode = :normal
end

#techbook_directive_eval(args) ⇒ Object

Eval: .eval


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# File 'lib/pdf/techbook.rb', line 678

def techbook_directive_eval(args)
  __render_paragraph
  @techbook_lastmode, @techbook_mode = @techbook_mode, :eval
end

#techbook_directive_keywords(args) ⇒ Object


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# File 'lib/pdf/techbook.rb', line 758

def techbook_directive_keywords(args)
  info.keywords = args
end

#techbook_directive_newpage(args) ⇒ Object

Start a new page: .newpage


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# File 'lib/pdf/techbook.rb', line 639

def techbook_directive_newpage(args)
  __render_paragraph

  if args =~ /^force/
    start_new_page true
  else
    start_new_page
  end
end

#techbook_directive_pre(args) ⇒ Object

Preserved newlines: .pre


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# File 'lib/pdf/techbook.rb', line 650

def techbook_directive_pre(args)
  __render_paragraph
  @techbook_mode = :preserved
end

#techbook_directive_subject(args) ⇒ Object


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# File 'lib/pdf/techbook.rb', line 754

def techbook_directive_subject(args)
  info.subject  = args
end

#techbook_directive_title(args) ⇒ Object


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# File 'lib/pdf/techbook.rb', line 750

def techbook_directive_title(args)
  info.title  = args
end

#techbook_directive_toc(args) ⇒ Object


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# File 'lib/pdf/techbook.rb', line 741

def techbook_directive_toc(args)
  @toc_title  = args unless args.empty?
  @gen_toc    = true
end

#techbook_parse(document, progress = nil) ⇒ Object


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# File 'lib/pdf/techbook.rb', line 517

def techbook_parse(document, progress = nil)
  @table_of_contents = []

  @toc_title          = "Table of Contents"
  @gen_toc            = false
  @techbook_code      = ""
  @techbook_para      = ""
  @techbook_fontsize  = 12
  @techbook_textopt   = { :justification => :full }
  @techbook_lastmode  = @techbook_mode = :normal

  @techbook_textfont  = "Times-Roman"
  @techbook_codefont  = "Courier"

  @blist_info         = []

  @techbook_line__    = 0

  __build_xref_table(document)

  document.each_line do |line|
  begin
    progress.inc if progress
    @techbook_line__ += 1

    next if line =~ %r{^#}o

    directive, args = techbook_find_directive(line)
    if directive
        # Just try to call the method/directive. It will be far more
        # common to *find* the method than not to.
      res = __send__("techbook_directive_#{directive}", args) rescue nil
      break if :break == res 
      next
    end

    case @techbook_mode
    when :eval
      @techbook_code << line << "\n"
      next
    when :code
      techbook_text(line)
      next
    when :blist
      line = "<C:#{@blist_info[-1][:style]}/>#{line}"
      techbook_text(line)
      next
    end

    next if techbook_heading(line)

    if :preserved == @techbook_mode
      techbook_text(line)
      next
    end

    line.chomp!

    if line.empty?
      __render_paragraph
      techbook_text("\n")
    else
      @techbook_para << " " unless @techbook_para.empty?
      @techbook_para << line
    end
  rescue Exception => ex
    $stderr.puts PDF::Writer::Lang[:techbook_exception] % [ ex, @techbook_line ]
    raise
  end
  end
end

#techbook_text(line) ⇒ Object


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# File 'lib/pdf/techbook.rb', line 896

def techbook_text(line)
  opt = @techbook_textopt.dup
  opt[:font_size] = @techbook_fontsize
  text(line, opt)
end

#techbook_toc(progress = nil) ⇒ Object


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# File 'lib/pdf/techbook.rb', line 589

def techbook_toc(progress = nil)
  insert_mode :on
  insert_position :after
  insert_page 1
  start_new_page

  style = H1_STYLE
  save_state

  if style[:bar]
    fill_color    style[:background]
    fh = font_height(style[:font_size]) * 1.01
    fd = font_descender(style[:font_size]) * 1.01
    x = absolute_left_margin
    w = absolute_right_margin - absolute_left_margin
    rectangle(x, y - fh + fd, w, fh).fill
  end

  fill_color  style[:foreground]
  text(@toc_title, :font_size => style[:font_size],
       :justification => style[:justification])

  restore_state

  self.y += font_descender(style[:font_size])#* 0.5

  right = absolute_right_margin

    # TODO -- implement tocdots as a replace tag and a single drawing tag.
  @table_of_contents.each do |entry|
    progress.inc if progress

    info =  "<c:ilink dest='#{entry[:xref]}'>#{entry[:title]}</c:ilink>"
    info << "<C:tocdots level='#{entry[:level]}' page='#{entry[:page]}' xref='#{entry[:xref]}'/>"

    case entry[:level]
    when 1
      text info, :font_size => 16, :absolute_right => right
    when 2
      text info, :font_size => 12, :left => 50, :absolute_right => right
    end
  end
end