Class: Ea::Svg::EaEmitter::FontResolver

Inherits:
Object
  • Object
show all
Defined in:
lib/ea/svg/ea_emitter/font_resolver.rb

Overview

Resolves the effective font family + size for a DiagramElement, using EA's fallback chain:

1. element.font_family / element.font_size (per-element override)
2. theme.font_family / theme.font_size (when theme is themed)
3. diagram-level default (most common non-nil value across
 the diagram's elements)
4. locale fallback (Calibri 10)

Lives outside the Elements emitter so the resolution rule is defined once (MECE) and reusable by Labels and any future text-emitting layer.

Constant Summary collapse

DEFAULT_FONT_FAMILY = 
"Yu Gothic UI"
DEFAULT_ELEMENT_FONT_SIZE =

EA's default element compartment font size (matches reference SVGs which use 9pt for classifier header, attributes, operations, etc. — distinct from theme's diagram-level font size which applies only to frame label and swimlanes).

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Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(diagram, theme: nil) ⇒ FontResolver

Returns a new instance of FontResolver.



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# File 'lib/ea/svg/ea_emitter/font_resolver.rb', line 29

def initialize(diagram, theme: nil)
  @diagram = diagram
  @theme = theme || Ea::Theme::Registry.default
end

Instance Attribute Details

#diagram ⇒ Object (readonly)

Returns the value of attribute diagram.



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# File 'lib/ea/svg/ea_emitter/font_resolver.rb', line 27

def diagram
  @diagram
end

#theme ⇒ Object (readonly)

Returns the value of attribute theme.



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# File 'lib/ea/svg/ea_emitter/font_resolver.rb', line 27

def theme
  @theme
end

Instance Method Details

#family_for(element) ⇒ Object 



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# File 'lib/ea/svg/ea_emitter/font_resolver.rb', line 34

def family_for(element)
  explicit = element&.font_family
  return explicit if explicit && !explicit.empty?
  return theme.font_family if theme.themed? && theme.font_family

  diagram_default_family || DEFAULT_FONT_FAMILY
end

#size_for(element) ⇒ Object 



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# File 'lib/ea/svg/ea_emitter/font_resolver.rb', line 42

def size_for(element)
  explicit = element&.font_size
  explicit = nil if explicit&.zero?
  return explicit if explicit
  return diagram_default_size if diagram_default_size

  DEFAULT_ELEMENT_FONT_SIZE
end

#size_unit_for(_element) ⇒ Object 



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# File 'lib/ea/svg/ea_emitter/font_resolver.rb', line 51

def size_unit_for(_element)
  theme.font_size_unit || "pt"
end

#style_for(element) ⇒ Object 



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# File 'lib/ea/svg/ea_emitter/font_resolver.rb', line 60

def style_for(element)
  element&.font_italic ? "italic" : "normal"
end

#weight_for(element) ⇒ Object 



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# File 'lib/ea/svg/ea_emitter/font_resolver.rb', line 55

def weight_for(element)
  bold = element&.font_bold ? 700 : nil
  bold || (theme.themed? ? theme.text_weight_normal : 400)
end