Class: Carve::Hexapdf::StyleMap

Inherits:
Object
  • Object
show all
Defined in:
lib/carve/hexapdf/style_map.rb

Overview

Hierarchical style resolver for renderer properties.

Constant Summary collapse

DEFAULTS = 
deep_freeze({
  "base" => { font: "Times" },
  "heading" => { margin: [10, 0, 6] },
  "heading.1" => { font_size: 22 },
  "heading.2" => { font_size: 18 },
  "heading.3" => { font_size: 15 },
  "heading.4" => { font_size: 13 },
  "heading.5" => { font_size: 12 },
  "heading.6" => { font_size: 11 },
  "paragraph" => { margin: [0, 0, 8] },
  "code" => { font: "Courier" },
  "code.block" => {
    font_size: 9,
    margin: [2, 0, 8],
    box: { background_color: "f2f2f2", padding: 6 },
  },
  "code.inline" => {},
  "quote" => {
    box: { margin: [2, 0, 8], padding: [4, 10], background_color: "f7f7f7" },
  },
  "admonition" => {
    box: { margin: [2, 0, 8], padding: [6, 10], background_color: "eef3fb" },
    title_margin: [0, 0, 4],
  },
  "list" => { item_spacing: 3, content_indentation: 18 },
  "definition_list" => { box: { margin: [0, 0, 8] }, definition_indent: 16 },
  "table" => { font_size: 10, cell_padding: 4, margin: [2, 0, 8] },
  "table.header" => {},
  "table.caption" => { font_size: 9, margin: [0, 0, 8] },
  "figure.caption" => { font_size: 9, margin: [2, 0, 8], text_align: :center },
  # A composite figure (PART 9 section 4c). :column_gap and
  # :min_column_width are read by the renderer rather than by HexaPDF:
  # they decide whether a `.columns-N` hint is honored or the panels
  # stack.
  "figure.group" => {
    box: { margin: [2, 0, 8] },
    column_gap: 18,
    min_column_width: 90,
  },
  "figure.group.caption" => { font_size: 9, margin: [4, 0, 0], text_align: :center },
  "footnote" => { font_size: 9, margin: [0, 0, 3] },
  "link" => { fill_color: "hp-blue" },
  "highlight" => { background_color: "fff3a3" },
  "image" => { margin: [2, 0, 8] },
  "math" => { font_size: 11, margin: [4, 0, 8], box: { padding: 4 } },
  "thematic_break" => { height: 2, margin: [8, 0, 8], background_color: "cccccc" },
})

Instance Method Summary collapse

Constructor Details

#initialize(styles = nil) ⇒ StyleMap

Returns a new instance of StyleMap.



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# File 'lib/carve/hexapdf/style_map.rb', line 66

def initialize(styles = nil)
  @user = normalize(styles || {})
  @memo = {}
end

Instance Method Details

#resolve(key) ⇒ Object 



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# File 'lib/carve/hexapdf/style_map.rb', line 71

def resolve(key)
  normalized = normalize_key(key)
  validate_key!(normalized)
  @memo[normalized] ||= chain_for(normalized).each_with_object({}) do |part, resolved|
    merge_entry!(resolved, DEFAULTS[part]) if DEFAULTS.key?(part)
    merge_entry!(resolved, @user[part]) if @user.key?(part)
  end.freeze
end

#user_set?(key, property = nil) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/carve/hexapdf/style_map.rb', line 80

def user_set?(key, property = nil)
  normalized = normalize_key(key)
  return false unless @user.key?(normalized)
  return true if property.nil?

  @user[normalized].key?(property)
end

#user_set_in_chain?(key, property) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/carve/hexapdf/style_map.rb', line 88

def user_set_in_chain?(key, property)
  chain_for(normalize_key(key)).any? { |part| user_set?(part, property) }
end