Class: Ea::Svg::EaEmitter::Labels

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

Overview

Emits the labels layer: connector role/multiplicity end labels plus midpoint stereotype labels for non-association connectors.

This class is the orchestrator. The actual label-shaping logic lives in dedicated, MECE collaborators under Ea::Svg::EaEmitter::Label:

Label::EndLabel      - role + «property» + mult at LLT/LRT
Label::MidpointLabel - «stereotype» at connector midpoint
Label::Registry      - dispatch by relationship kind (OCP)

Theme is read once and threaded to collaborators so the rendering rules (font family/size, fill color) live in one place.

Constant Summary collapse

DEFAULT_FAMILY = 
"Yu Gothic UI"
DEFAULT_SIZE = 
13

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(diagram, canvas: nil, model_index: nil, theme: nil, document: nil) ⇒ Labels

Returns a new instance of Labels.



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

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

Instance Attribute Details

#canvas ⇒ Object (readonly)

Returns the value of attribute canvas.



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# File 'lib/ea/svg/ea_emitter/labels.rb', line 25

def canvas
  @canvas
end

#diagram ⇒ Object (readonly)

Returns the value of attribute diagram.



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# File 'lib/ea/svg/ea_emitter/labels.rb', line 25

def diagram
  @diagram
end

#document ⇒ Object (readonly)

Returns the value of attribute document.



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# File 'lib/ea/svg/ea_emitter/labels.rb', line 25

def document
  @document
end

#model_index ⇒ Object (readonly)

Returns the value of attribute model_index.



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# File 'lib/ea/svg/ea_emitter/labels.rb', line 25

def model_index
  @model_index
end

#theme ⇒ Object (readonly)

Returns the value of attribute theme.



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# File 'lib/ea/svg/ea_emitter/labels.rb', line 25

def theme
  @theme
end

Instance Method Details

#render ⇒ Object 



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# File 'lib/ea/svg/ea_emitter/labels.rb', line 36

def render
  texts = visible_connectors.flat_map { |c| texts_for(c) }
  return "" if texts.empty?

  %(<g style="stroke-width:1;stroke-linecap:round;stroke-linejoin:bevel; fill:#000000;fill-opacity:1.00; stroke:#000000; stroke-opacity:0.00">\n#{texts.join("\n")}\n</g>)
end