Class: Uniword::Mhtml::WordCss

Inherits:
Object
  • Object
show all
Defined in:
lib/uniword/mhtml/word_css.rb

Overview

Handles Word CSS stylesheet generation.

Responsibility: Provide Word-compatible CSS styles for MHTML documents. This includes default Word styles and custom style generation.

Examples:

Load default CSS

css = WordCss.default_css

Generate custom CSS

css = WordCss.generate_style_css(styles_config)

Class Method Summary collapse

Class Method Details

.basic_css ⇒ String

Get basic fallback CSS.



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# File 'lib/uniword/mhtml/word_css.rb', line 161

def self.basic_css
  <<~CSS
    /* Basic Word styles */
    p.MsoNormal, li.MsoNormal, div.MsoNormal {
      margin: 0;
      margin-bottom: .0001pt;
      font-size: 11pt;
      font-family: "Calibri", sans-serif;
    }
    h1 {
      margin-top: 12pt;
      margin-bottom: 0;
      page-break-after: avoid;
      font-size: 16pt;
      font-family: "Calibri Light", sans-serif;
      font-weight: normal;
    }
    h2 {
      margin-top: 10pt;
      margin-bottom: 0;
      page-break-after: avoid;
      font-size: 13pt;
      font-family: "Calibri Light", sans-serif;
      font-weight: normal;
    }
    h3 {
      margin-top: 10pt;
      margin-bottom: 0;
      page-break-after: avoid;
      font-size: 12pt;
      font-family: "Calibri Light", sans-serif;
      font-weight: normal;
    }
    table.MsoNormalTable {
      font-size: 11pt;
      font-family: "Calibri", sans-serif;
    }
    a:link, span.MsoHyperlink {
      color: blue;
      text-decoration: underline;
    }
  CSS
end

.build_list_rule(instance) ⇒ String?

Build a CSS rule for list numbering.



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# File 'lib/uniword/mhtml/word_css.rb', line 151

def self.build_list_rule(instance)
  return nil unless instance

  # Generate @list rule for Word
  "@list l#{instance.num_id} {\n  mso-list-id: #{instance.num_id};\n}"
end

.build_page_rule(section, section_name) ⇒ String?

Build @page CSS rule for a section.



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# File 'lib/uniword/mhtml/word_css.rb', line 80

def self.build_page_rule(section, section_name)
  properties = section&.properties
  return nil unless properties

  rules = []

  # Page size
  width = properties.page_width
  height = properties.page_height
  if width && height
    # Convert from twips to inches (1 inch = 1440 twips)
    w_in = CssNumberFormatter.twips_to_in(width, precision: 1)
    h_in = CssNumberFormatter.twips_to_in(height, precision: 1)
    rules << "size: #{w_in} #{h_in}"
  else
    # Default letter size
    rules << "size: 8.5in 11in"
  end

  # Margins
  rules << "margin-top: #{CssNumberFormatter.twips_to_in(properties.margin_top)}" if properties.margin_top
  rules << "margin-bottom: #{CssNumberFormatter.twips_to_in(properties.margin_bottom)}" if properties.margin_bottom
  rules << "margin-left: #{CssNumberFormatter.twips_to_in(properties.margin_left)}" if properties.margin_left
  rules << "margin-right: #{CssNumberFormatter.twips_to_in(properties.margin_right)}" if properties.margin_right

  # Header/Footer margins
  rules << "mso-header-margin: #{CssNumberFormatter.twips_to_in(properties.header_margin)}" if properties.header_margin
  rules << "mso-footer-margin: #{CssNumberFormatter.twips_to_in(properties.footer_margin)}" if properties.footer_margin

  "@page #{section_name} {\n  #{rules.join(";\n  ")};\n}"
end

.build_section_div_rule(section_name) ⇒ String

Build div.Section CSS rule.



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# File 'lib/uniword/mhtml/word_css.rb', line 116

def self.build_section_div_rule(section_name)
  "div.Word#{section_name} {\n  page: #{section_name};\n}"
end

.build_style_rule(style) ⇒ String?

Build a CSS rule for a style.



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# File 'lib/uniword/mhtml/word_css.rb', line 124

def self.build_style_rule(style)
  return nil unless style

  properties = []

  # Font properties
  properties << "font-family: '#{style.font}'" if style.font
  if style.font_size
    properties << "font-size: #{CssNumberFormatter.format(style.font_size, 'pt',
                                                          precision: 1)}"
  end
  properties << "font-weight: bold" if style.bold
  properties << "font-style: italic" if style.italic

  # Paragraph properties
  properties << "text-align: #{style.alignment}" if style.alignment

  return nil if properties.empty?

  selector = ".#{style.style_id}"
  "#{selector} {\n  #{properties.join(";\n  ")};\n}"
end

.default_css ⇒ String

Get the default Word CSS stylesheet.



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# File 'lib/uniword/mhtml/word_css.rb', line 19

def self.default_css
  css_path = File.join(__dir__, "wordstyle.css")
  if File.exist?(css_path)
    File.read(css_path, encoding: "UTF-8")
  else
    # Fallback to basic CSS if file doesn't exist
    basic_css
  end
end

.generate_list_css(numbering_config) ⇒ String

Generate CSS for list numbering.



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# File 'lib/uniword/mhtml/word_css.rb', line 47

def self.generate_list_css(numbering_config)
  return "" unless numbering_config

  css_rules = numbering_config.instances.map do |instance|
    build_list_rule(instance)
  end

  css_rules.compact.join("\n")
end

.generate_section_css(sections) ⇒ String

Generate CSS for document sections with page layout.



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# File 'lib/uniword/mhtml/word_css.rb', line 61

def self.generate_section_css(sections)
  return "" unless sections && !sections.empty?

  css_rules = []

  sections.each_with_index do |section, index|
    section_name = "Section#{index + 1}"
    css_rules << build_page_rule(section, section_name)
    css_rules << build_section_div_rule(section_name)
  end

  css_rules.compact.join("\n")
end

.generate_style_css(styles_config) ⇒ String

Generate CSS for custom styles.



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# File 'lib/uniword/mhtml/word_css.rb', line 33

def self.generate_style_css(styles_config)
  return "" unless styles_config

  css_rules = styles_config.styles.map do |style|
    build_style_rule(style)
  end

  css_rules.compact.join("\n")
end