Class: Idml::Render::StyleLookup

Inherits:
Object
  • Object
show all
Defined in:
lib/idml/render/style_lookup.rb

Overview

Resolves AppliedParagraphStyle and AppliedCharacterStyle references to their style definitions in Resources/Styles.xml. Built once per render pass from Parts::Style; StyleResolver consults it to fill in formatting attributes that the PSR/CSR element doesn't declare inline.

Merge semantics: PSR/CSR inline attributes override style attributes. When the PSR/CSR declares a value (non-nil), that wins. When it doesn't, the style definition's value is used as a default. When neither declares a value, the attribute remains nil and the renderer applies its own default.

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(para_styles, char_styles) ⇒ StyleLookup 



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# File 'lib/idml/render/style_lookup.rb', line 26

def initialize(para_styles, char_styles)
  @para_styles = para_styles
  @char_styles = char_styles
end

Class Method Details

.from_package(package) ⇒ Object 



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# File 'lib/idml/render/style_lookup.rb', line 17

def self.from_package(package)
  styles = package&.style
  return new({}, {}) unless styles

  para_styles = index_styles(styles.paragraph_style)
  char_styles = index_styles(styles.character_style)
  new(para_styles, char_styles)
end

Instance Method Details

#character_style(self_ref) ⇒ Object

Returns the CharacterStyle referenced by self_ref, or nil.



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# File 'lib/idml/render/style_lookup.rb', line 41

def character_style(self_ref)
  return nil unless self_ref

  @char_styles[self_ref]
end

#paragraph_style(self_ref) ⇒ Object

Returns the ParagraphStyle referenced by self_ref, or nil. self_ref is the PSR's AppliedParagraphStyle value (e.g., "ParagraphStyle/$ID/NormalParagraphStyle").



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# File 'lib/idml/render/style_lookup.rb', line 34

def paragraph_style(self_ref)
  return nil unless self_ref

  @para_styles[self_ref]
end

#resolve_char_attr(csr, attr_name) ⇒ Object

Returns the value of attr_name from the CSR, or from the referenced CharacterStyle when the CSR doesn't declare it.



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# File 'lib/idml/render/style_lookup.rb', line 62

def resolve_char_attr(csr, attr_name)
  csr_value = csr.public_send(attr_name)
  return csr_value unless csr_value.nil?

  style = character_style(csr.applied_character_style)
  style&.public_send(attr_name)
end

#resolve_para_attr(psr, attr_name) ⇒ Object

Returns the value of attr_name from the PSR, or from the referenced ParagraphStyle when the PSR doesn't declare it. Uses public_send (not send) to stay within public API boundaries — the attribute readers generated by lutaml-model are public.



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# File 'lib/idml/render/style_lookup.rb', line 52

def resolve_para_attr(psr, attr_name)
  psr_value = psr.public_send(attr_name)
  return psr_value unless psr_value.nil?

  style = paragraph_style(psr.applied_paragraph_style)
  style&.public_send(attr_name)
end