Class: Lutaml::Ea::Diagram::StyleResolver

Inherits:
Object
  • Object
show all
Defined in:
lib/lutaml/ea/diagram/style_resolver.rb

Overview

Resolves styles for diagram elements by merging multiple sources

Priority order (highest to lowest):

  1. EA Data from DiagramObject.style (BCol, LCol, etc.)

  2. User Configuration (YAML)

  3. Built-in Defaults

This ensures that:

  • EA’s original styling is preserved when present

  • Users can override defaults via configuration

  • Sensible defaults are always available

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(config_path = nil) ⇒ StyleResolver

Initialize with configuration

Parameters:

  • config_path (String, nil) (defaults to: nil) —

    Path to configuration file



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# File 'lib/lutaml/ea/diagram/style_resolver.rb', line 26

def initialize(config_path = nil)
  @configuration = Configuration.new(config_path)
  @style_parser = StyleParser.new
end

Instance Attribute Details

#configuration ⇒ Object (readonly)

Returns the value of attribute configuration.



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# File 'lib/lutaml/ea/diagram/style_resolver.rb', line 21

def configuration
  @configuration
end

#style_parser ⇒ Object (readonly)

Returns the value of attribute style_parser.



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# File 'lib/lutaml/ea/diagram/style_resolver.rb', line 21

def style_parser
  @style_parser
end

Instance Method Details

#resolve_connector_style(connector, diagram_link = nil) ⇒ Hash

Resolve complete style for a connector

(Association, Generalization, etc.) Diagram routing data

Parameters:

Returns:

  • (Hash) —

    Complete resolved style



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# File 'lib/lutaml/ea/diagram/style_resolver.rb', line 82

def resolve_connector_style(connector, diagram_link = nil) # rubocop:disable Metrics/AbcSize,Metrics/MethodLength
  # Determine connector type
  connector_type = determine_connector_type(connector)

  style = {}

  # Start with configuration defaults for this connector type
  style[:arrow_type] =
    configuration.connector_style(connector_type, "arrow.type")
  style[:arrow_size] =
    configuration.connector_style(connector_type, "arrow.size")
  style[:stroke] =
    configuration.connector_style(connector_type, "line.stroke")
  style[:stroke_width] =
    configuration.connector_style(connector_type, "line.stroke_width")
  style[:stroke_dasharray] =
    configuration.connector_style(connector_type,
                                  "line.stroke_dasharray")
  style[:fill] =
    configuration.connector_style(connector_type, "line.fill") || "none"

  # Override with EA data if present (highest priority)
  if diagram_link&.style
    ea_style = parse_diagram_link_style(diagram_link.style)
    style.merge!(ea_style)
  end

  style.compact
end

#resolve_element_style(element, diagram_object = nil) ⇒ Hash Also known as: parse_element_style

Resolve complete style for an element

Diagram placement data

Parameters:

Returns:

  • (Hash) —

    Complete resolved style



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# File 'lib/lutaml/ea/diagram/style_resolver.rb', line 37

def resolve_element_style(element, diagram_object = nil) # rubocop:disable Metrics/AbcSize,Metrics/MethodLength
  style = {}

  # Start with configuration defaults
  style[:fill] = configuration.style_for(element, "colors.fill")
  style[:stroke] = configuration.style_for(element, "colors.stroke")
  style[:stroke_width] =
    configuration.style_for(element, "box.stroke_width")
  style[:stroke_linecap] =
    configuration.style_for(element, "box.stroke_linecap")
  style[:stroke_linejoin] =
    configuration.style_for(element, "box.stroke_linejoin")
  style[:corner_radius] =
    configuration.style_for(element, "box.corner_radius")
  style[:fill_opacity] =
    configuration.style_for(element, "box.fill_opacity")
  style[:stroke_opacity] =
    configuration.style_for(element, "box.stroke_opacity")

  # Font configuration
  style[:font_family] =
    configuration.style_for(element, "fonts.class_name.family")
  style[:font_size] =
    configuration.style_for(element, "fonts.class_name.size")
  style[:font_weight] =
    configuration.style_for(element, "fonts.class_name.weight")
  style[:font_style] =
    configuration.style_for(element, "fonts.class_name.style")

  # Override with EA data if present (highest priority)
  if diagram_object&.style
    ea_style = parse_diagram_object_style(diagram_object.style)
    style.merge!(ea_style)
  end

  style.compact
end

#resolve_fill_color(element, diagram_object = nil) ⇒ String

Resolve fill color specifically

Diagram placement data

Parameters:

Returns:

  • (String) —

    Resolved fill color



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# File 'lib/lutaml/ea/diagram/style_resolver.rb', line 118

def resolve_fill_color(element, diagram_object = nil)
  # Priority 1: EA data from DiagramObject.style
  if diagram_object&.style
    ea_style = parse_diagram_object_style(diagram_object.style)
    return ea_style[:fill] if ea_style[:fill]
  end

  # Priority 2: Configuration (Class > Package > Stereotype > Defaults)
  configuration.style_for(element, "colors.fill")
end

#resolve_font(element, context = :class_name) ⇒ Hash

Resolve font properties

(:class_name, :attribute, :operation, :stereotype)

Parameters:

  • element (Object) —

    UML element

  • context (Symbol) (defaults to: :class_name) —

    Font context

Returns:

  • (Hash) —

    Font properties (family, size, weight, style)



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# File 'lib/lutaml/ea/diagram/style_resolver.rb', line 152

def resolve_font(element, context = :class_name)
  {
    family: configuration.style_for(element, "fonts.#{context}.family"),
    size: configuration.style_for(element, "fonts.#{context}.size"),
    weight: configuration.style_for(element, "fonts.#{context}.weight"),
    style: configuration.style_for(element, "fonts.#{context}.style"),
  }.compact
end

#resolve_stroke_color(element, diagram_object = nil) ⇒ String

Resolve stroke color specifically

Diagram placement data

Parameters:

Returns:

  • (String) —

    Resolved stroke color



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# File 'lib/lutaml/ea/diagram/style_resolver.rb', line 135

def resolve_stroke_color(element, diagram_object = nil)
  # Priority 1: EA data from DiagramObject.style
  if diagram_object&.style
    ea_style = parse_diagram_object_style(diagram_object.style)
    return ea_style[:stroke] if ea_style[:stroke]
  end

  # Priority 2: Configuration
  configuration.style_for(element, "colors.stroke")
end