|
| 1 | +require 'asciidoctor-pdf' unless defined? ::Asciidoctor::Pdf |
| 2 | + |
| 3 | +module AsciidoctorPdfExtensions |
| 4 | + # Override the built-in layout_toc to move colophon before front of table of contents |
| 5 | + # NOTE we assume that the colophon fits on a single page |
| 6 | + def layout_toc doc, num_levels = 2, toc_page_number = 2, num_front_matter_pages = 0 |
| 7 | + go_to_page toc_page_number unless (page_number == toc_page_number) || scratch? |
| 8 | + if scratch? |
| 9 | + colophon = doc.find_by(context: :section) {|sect| sect.sectname == 'colophon' } |
| 10 | + if (colophon = colophon.first) |
| 11 | + doc.instance_variable_set :@colophon, colophon |
| 12 | + colophon.parent.blocks.delete colophon |
| 13 | + end |
| 14 | + else |
| 15 | + if (colophon = doc.instance_variable_get :@colophon) |
| 16 | + # if prepress book, consume blank page before table of contents |
| 17 | + go_to_page(page_number - 1) if @ppbook |
| 18 | + convert_section colophon |
| 19 | + go_to_page(page_number + 1) |
| 20 | + end |
| 21 | + end |
| 22 | + offset = colophon && !@ppbook ? 1 : 0 |
| 23 | + toc_page_numbers = super doc, num_levels, (toc_page_number + offset), num_front_matter_pages |
| 24 | + scratch? ? ((toc_page_numbers.begin - offset)..toc_page_numbers.end) : toc_page_numbers |
| 25 | + end |
| 26 | + |
| 27 | + # force chapters to start on new page; |
| 28 | + # force select chapters to start on the recto (odd-numbered, right-hand) page |
| 29 | + def start_new_chapter chapter |
| 30 | + start_new_page unless at_page_top? |
| 31 | + if @ppbook && verso_page? && !(chapter.option? 'nonfacing') |
| 32 | + update_colors # prevents Ghostscript from reporting a warning when running content is written to blank page |
| 33 | + start_new_page |
| 34 | + end |
| 35 | + end |
| 36 | + |
| 37 | + def layout_chapter_title node, title, opts = {} |
| 38 | + puts node.id |
| 39 | + |
| 40 | + if (sect_id = node.id) == '_dedication' || sect_id == 'acknowledgements' |
| 41 | + layout_heading_custom title, align: :center |
| 42 | + elsif sect_id == 'colophon' |
| 43 | + puts 'Processing.. ' + node.sectname + '...' |
| 44 | + if node.document.attr? 'media', 'prepress' |
| 45 | + move_down 225 |
| 46 | + else |
| 47 | + move_down 360 |
| 48 | + end |
| 49 | + layout_heading title, size: @theme.base_font_size |
| 50 | + elsif sect_id.include? 'chapter' # chapters |
| 51 | + puts 'Processing ' + sect_id + '...' |
| 52 | + # use Akkurat font for all custom headings |
| 53 | + font 'Akkurat' do |
| 54 | + if node.document.attr? 'media', 'prepress' |
| 55 | + move_down 120 |
| 56 | + else |
| 57 | + move_down 180 |
| 58 | + end |
| 59 | + if @ppbook |
| 60 | + layout_heading 'PART', align: :right, size: 100, style: :normal |
| 61 | + else |
| 62 | + layout_heading 'PART', align: :right, size: 100, color: [91, 54, 8, 13], style: :normal |
| 63 | + end |
| 64 | + move_up 40 |
| 65 | + |
| 66 | + part_number = 'ONE' |
| 67 | + if sect_id.include? 'chapter-2' |
| 68 | + part_number = 'TWO' |
| 69 | + elsif sect_id.include? 'chapter-3' |
| 70 | + part_number = 'THREE' |
| 71 | + end |
| 72 | + if @ppbook |
| 73 | + layout_heading part_number, align: :right, size: 100, style: :bold |
| 74 | + layout_heading title, align: :right, style: :normal, size: 30 |
| 75 | + else |
| 76 | + layout_heading part_number, align: :right, size: 100, color: [42, 1, 83, 1], style: :bold |
| 77 | + layout_heading title, align: :right, color: [42, 1, 83, 1], style: :normal, size: 30 |
| 78 | + end |
| 79 | + end |
| 80 | + |
| 81 | + bounds.move_past_bottom |
| 82 | + else |
| 83 | + super # delegate to default implementation |
| 84 | + end |
| 85 | + end |
| 86 | + |
| 87 | + def layout_heading_custom string, opts = {} |
| 88 | + move_down 100 |
| 89 | + typeset_text string, calc_line_metrics((opts.delete :line_height) || @theme.heading_line_height), { |
| 90 | + inline_format: true |
| 91 | + }.merge(opts) |
| 92 | + move_up 5 |
| 93 | + i = 0 |
| 94 | + underline = '' |
| 95 | + while i < string.length do |
| 96 | + if string == 'Dedication' |
| 97 | + underline += '/////' |
| 98 | + else |
| 99 | + underline += '//////' |
| 100 | + end |
| 101 | + i += 1 |
| 102 | + end |
| 103 | + if string == 'Dedication' |
| 104 | + underline += '////' |
| 105 | + end |
| 106 | + typeset_text underline, calc_line_metrics((opts.delete :line_height) || @theme.heading_line_height), { |
| 107 | + inline_format: true, color: 'B0B0B0', size: 8, style: :italic |
| 108 | + }.merge(opts) |
| 109 | + move_down 20 |
| 110 | + end |
| 111 | +end |
| 112 | + |
| 113 | +Asciidoctor::Pdf::Converter.prepend AsciidoctorPdfExtensions |
0 commit comments