Class: Ea::Svg::EaEmitter::Element::HeaderLineProvider::Name

Inherits:
Object
  • Object
show all
Defined in:
lib/ea/svg/ea_emitter/element/header_line_provider/name.rb

Overview

Emits the classifier's display name, with these behaviors:

  • Bold-italic for abstract Klass; bold otherwise.
  • Qualified name wrap when the rendered width exceeds the element bounds. EA splits "pkg::Class" across two lines when the combined width is too wide.

InstanceSpecification returns [] (InstanceSpec provider already emitted the full label).

Constant Summary collapse

QUALIFIED_WRAP_WIDTH_FACTOR = 
0.55
QUALIFIED_WRAP_PADDING = 
8

Class Method Summary collapse

Class Method Details

.call(context) ⇒ Object 



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# File 'lib/ea/svg/ea_emitter/element/header_line_provider/name.rb', line 21

def self.call(context)
  classifier = context.classifier
  return [] if classifier.is_a?(Ea::Model::InstanceSpecification)

  weight = weight_for(classifier)
  wrapped_name_lines(classifier, context, weight)
end

.display_name(classifier, diagram_package_id = nil, _visually_nested = false) ⇒ Object 



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# File 'lib/ea/svg/ea_emitter/element/header_line_provider/name.rb', line 54

def self.display_name(classifier, diagram_package_id = nil,
                      _visually_nested = false)
  name = if classifier.is_a?(Ea::Model::Classifier)
           (classifier.qualified_name || classifier.name).to_s
         else
           classifier.name.to_s
         end
  return name if diagram_package_id.nil?
  return name unless name.include?("::")

  if classifier.is_a?(Ea::Model::Classifier) &&
     classifier.package_id == diagram_package_id
    name.split("::").last
  else
    name
  end
end

.name_exceeds_bounds?(name, bounds_width, font_size) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ea/svg/ea_emitter/element/header_line_provider/name.rb', line 48

def self.name_exceeds_bounds?(name, bounds_width, font_size)
  TextRenderer.estimate_width(name, font_size,
                              QUALIFIED_WRAP_WIDTH_FACTOR) >
    (bounds_width - QUALIFIED_WRAP_PADDING)
end

.weight_for(classifier) ⇒ Symbol

Returns :bold_italic for abstract, :bold otherwise.

Parameters:

Returns:

  • (Symbol) —

    :bold_italic for abstract, :bold otherwise



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# File 'lib/ea/svg/ea_emitter/element/header_line_provider/name.rb', line 31

def self.weight_for(classifier)
  classifier.is_a?(Ea::Model::Klass) && classifier.is_abstract ? :bold_italic : :bold
end

.wrapped_name_lines(classifier, context, weight) ⇒ Object 



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# File 'lib/ea/svg/ea_emitter/element/header_line_provider/name.rb', line 35

def self.wrapped_name_lines(classifier, context, weight)
  name = display_name(classifier, context.diagram_package_id,
                      context.visually_nested)
  unless context.bounds_width && name.include?("::") &&
         name_exceeds_bounds?(name, context.bounds_width,
                               context.font_size || 9)
    return [[name, weight]]
  end

  qualifier, base = name.split("::", 2)
  [["#{qualifier}::", weight], [base, weight]]
end