Class: Ea::Diagram::ElementRenderers::ClassRenderer

Inherits:
BaseRenderer
  • Object
show all
Defined in:
lib/ea/diagram/element_renderers/class_renderer.rb

Overview

Renderer for UML class elements

Instance Attribute Summary

Attributes inherited from BaseRenderer

#element, #style_resolver

Instance Method Summary collapse

Methods inherited from BaseRenderer

#escape_text, #initialize, #render

Methods included from Util

#parse_ea_geometry, #parse_geometry_offsets, #style_to_css

Constructor Details

This class inherits a constructor from Ea::Diagram::ElementRenderers::BaseRenderer

Instance Method Details

#calculate_attributes_height ⇒ Object 



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# File 'lib/ea/diagram/element_renderers/class_renderer.rb', line 169

def calculate_attributes_height
  return 0 unless element[:attributes]&.any?

  (element[:attributes].size * 15) + 10
end

#calculate_operations_height ⇒ Object 



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# File 'lib/ea/diagram/element_renderers/class_renderer.rb', line 175

def calculate_operations_height
  return 0 unless element[:operations]&.any?

  (element[:operations].size * 15) + 10
end

#calculate_text_length(text, font_size) ⇒ Object

Calculate approximate text length in pixels (EA uses this for precise positioning)



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# File 'lib/ea/diagram/element_renderers/class_renderer.rb', line 311

def calculate_text_length(text, font_size)
  return 0 unless text

  # Simple approximation: average character width * text length
  # This is a rough approximation
  # - in a real implementation, we'd use actual font metrics
  font_size_num = parse_font_size(font_size)
  text.to_s.length * (font_size_num * 0.6).to_i
end

#format_attribute(attribute) ⇒ Object 



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# File 'lib/ea/diagram/element_renderers/class_renderer.rb', line 251

def format_attribute(attribute)
  return attribute unless attribute.is_a?(Hash)

  visibility = visibility_symbol(attribute[:visibility])
  name = attribute[:name] || ""
  type = attribute[:type] ? ": #{attribute[:type]}" : ""

  "#{visibility}#{name}#{type}"
end

#format_operation(operation) ⇒ Object 



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# File 'lib/ea/diagram/element_renderers/class_renderer.rb', line 261

def format_operation(operation)
  return operation unless operation.is_a?(Hash)

  visibility = visibility_symbol(operation[:visibility])
  name = operation[:name] || ""
  params = format_parameters(operation[:parameters] || [])
  return_type = if operation[:return_type]
                  ": #{operation[:return_type]}"
                else
                  ""
                end

  "#{visibility}#{name}(#{params})#{return_type}"
end

#format_parameters(parameters) ⇒ Object 



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# File 'lib/ea/diagram/element_renderers/class_renderer.rb', line 276

def format_parameters(parameters)
  parameters.map do |param|
    if param.is_a?(Hash)
      "#{param[:name]}: #{param[:type]}"
    else
      param.to_s
    end
  end.join(", ")
end

#parse_font_size(font_size) ⇒ Object

Parse font size string to get numeric value



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# File 'lib/ea/diagram/element_renderers/class_renderer.rb', line 297

def parse_font_size(font_size)
  return 7 if font_size.nil? # default size

  # Extract numeric part from font size string (e.g., "7pt" -> 7)
  if font_size.is_a?(String)
    match = font_size.match(/(\d+(?:\.\d+)?)/)
    match ? match[1].to_f : 7
  else
    font_size.to_f
  end
end

#render_attributes_compartment_separator(x, y, width, name_height, attributes_height, style) ⇒ Object

rubocop:disable Metrics/ParameterLists



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# File 'lib/ea/diagram/element_renderers/class_renderer.rb', line 181

def render_attributes_compartment_separator( # rubocop:disable Metrics/ParameterLists
  x, y, width, name_height, # rubocop:disable Naming/MethodParameterName
  attributes_height, style
)
  return "" if attributes_height.zero?

  separator_y = y + name_height + attributes_height
  <<~SVG
    <path d="M #{x} #{separator_y} L #{x + width} #{separator_y}" shape-rendering="#{style[:shape_rendering] || 'auto'}"/>
  SVG
end

#render_label(style) ⇒ Object

rubocop:disable Metrics/AbcSize,Metrics/CyclomaticComplexity,Metrics/MethodLength,Metrics/PerceivedComplexity



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# File 'lib/ea/diagram/element_renderers/class_renderer.rb', line 73

def render_label(style) # rubocop:disable Metrics/AbcSize,Metrics/CyclomaticComplexity,Metrics/MethodLength,Metrics/PerceivedComplexity
  x = element[:x] || 0
  y = element[:y] || 0
  width = element[:width] || 120

  # Calculate compartment heights
  name_height = 25
  attributes_height = calculate_attributes_height
  calculate_operations_height

  svg_content = +""

  # Class name (centered in name compartment)
  name_y = y + (name_height / 2) + 5
  svg_content << render_text_element(
    element[:name],
    x + (width / 2),
    name_y,
    style,
    "lutaml-diagram-class-name",
    font_weight: style[:font_weight] || "700",
    font_style: style[:font_style] || "italic",
    font_family: style[:font_family] || "Cambria",
    font_size: style[:font_size] || "7pt",
  )

  # Stereotype (above name if present)
  if element[:stereotype]
    stereotype_y = y + 15
    svg_content << render_text_element(
      "«#{element[:stereotype]}»",
      x + (width / 2),
      stereotype_y,
      style,
      "lutaml-diagram-class-stereotype",
      font_weight: style[:stereotype_font_weight] || "0",
      font_style: style[:stereotype_font_style] || "normal",
      font_family: style[:stereotype_font_family] || "Cambria",
      font_size: style[:stereotype_font_size] || "7pt",
    )
  end

  # Attributes
  if element[:attributes]&.any?
    attr_y = y + name_height + 15
    element[:attributes].each do |attr|
      svg_content << render_text_element(
        format_attribute(attr),
        x + 5,
        attr_y,
        style,
        "lutaml-diagram-class-attribute",
        font_weight: style[:attribute_font_weight] || "0",
        font_style: style[:attribute_font_style] || "normal",
        font_family: style[:attribute_font_family] || "Cambria",
        font_size: style[:attribute_font_size] || "7pt",
        text_anchor: "start",
      )
      attr_y += 15
    end
  end

  # Operations
  if element[:operations]&.any?
    op_y = y + name_height + attributes_height + 15
    element[:operations].each do |op|
      svg_content << render_text_element(
        format_operation(op),
        x + 5,
        op_y,
        style,
        "lutaml-diagram-class-operation",
        font_weight: style[:attribute_font_weight] || "0",
        font_style: style[:attribute_font_style] || "normal",
        font_family: style[:attribute_font_family] || "Cambria",
        font_size: style[:attribute_font_size] || "7pt",
        text_anchor: "start",
      )
      op_y += 15
    end
  end

  # Build text style string
  text_style_attrs = []
  text_style_attrs << "stroke-width:1"
  text_style_attrs << "stroke-linecap:round"
  text_style_attrs << "stroke-linejoin:bevel"
  text_style_attrs << "fill:#000000"
  text_style_attrs << "fill-opacity:1.00"
  text_style_attrs << "stroke:#000000"
  text_style_attrs << "stroke-opacity:0.00"

  "<g style=\"#{text_style_attrs.join(';')}\">\n#{svg_content}\n</g>"
end

#render_operations_compartment_separator(x, y, width, name_height, attributes_height, operations_height, style) ⇒ Object

rubocop:disable Metrics/ParameterLists



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# File 'lib/ea/diagram/element_renderers/class_renderer.rb', line 193

def render_operations_compartment_separator( # rubocop:disable Metrics/ParameterLists
  x, y, width, name_height, # rubocop:disable Naming/MethodParameterName
  attributes_height, operations_height, style
)
  return "" if operations_height.zero?

  separator_y = y + name_height +
    attributes_height + operations_height
  <<~SVG
    <path d="M #{x} #{separator_y} L #{x + width} #{separator_y}" shape-rendering="#{style[:shape_rendering] || 'auto'}"/>
  SVG
end

#render_shape(style) ⇒ Object

rubocop:disable Metrics/AbcSize,Metrics/CyclomaticComplexity,Metrics/MethodLength,Metrics/PerceivedComplexity



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# File 'lib/ea/diagram/element_renderers/class_renderer.rb', line 8

def render_shape(style) # rubocop:disable Metrics/AbcSize,Metrics/CyclomaticComplexity,Metrics/MethodLength,Metrics/PerceivedComplexity
  x = element[:x] || 0
  y = element[:y] || 0
  width = element[:width] || 120
  height = element[:height] || 80

  # Calculate compartment heights
  name_height = 25
  attributes_height = calculate_attributes_height
  operations_height = calculate_operations_height

  total_height = name_height + attributes_height + operations_height

  # Adjust element height if needed
  height = [height, total_height].max

  # Build style string for the group
  group_style_attrs = []
  group_style_attrs << "stroke-width:#{style[:stroke_width] || 1}"
  group_style_attrs << "stroke-linecap:#{style[:stroke_linecap] ||
    'round'}"
  group_style_attrs << "stroke-linejoin:#{style[:stroke_linejoin] ||
    'bevel'}"
  group_style_attrs << "fill:#{style[:fill]}"
  group_style_attrs << "fill-opacity:#{style[:fill_opacity] ||
    '1.00'}"
  group_style_attrs << "stroke:#{style[:stroke]}"
  group_style_attrs << "stroke-opacity:#{style[:stroke_opacity] ||
    '1.00'}"

  # Build style string for compartment lines
  line_style_attrs = []
  line_style_attrs << "stroke-width:#{style[:compartment_width] || 1}"
  line_style_attrs << "stroke-linecap:#{style[:stroke_linecap] ||
    'round'}"
  line_style_attrs << "stroke-linejoin:#{style[:stroke_linejoin] ||
    'bevel'}"
  line_style_attrs << "fill:#000000"
  line_style_attrs << "fill-opacity:0.00"
  line_style_attrs << "stroke:#{style[:stroke] || '#000000'}"
  line_style_attrs << "stroke-opacity:#{style[:stroke_opacity] ||
    '1.00'}"

  <<~SVG
    <g style="#{group_style_attrs.join(';')}">
     <rect x="#{x}"
          y="#{y}"
          width="#{width}"
          height="#{height}"
          rx="#{style[:corner_radius] || 0.00}"
          shape-rendering="#{style[:shape_rendering] || 'auto'}"  />
    </g>
    <g style="#{line_style_attrs.join(';')}">
    <!-- Name compartment -->
    <path d="M #{x} #{y + name_height} L #{x + width} #{y + name_height}" shape-rendering="#{style[:shape_rendering] || 'auto'}"/>

    <!-- Attributes compartment (if any) -->
    #{render_attributes_compartment_separator(x, y, width, name_height, attributes_height, style)}

    <!-- Operations compartment (if any) -->
    #{render_operations_compartment_separator(x, y, width, name_height, attributes_height, operations_height, style)}
    </g>
  SVG
end

#render_text_element(text, x, y, style, css_class, options = {}) ⇒ Object

rubocop:disable Metrics/AbcSize,Metrics/CyclomaticComplexity,Metrics/MethodLength,Metrics/PerceivedComplexity,Metrics/ParameterLists,Naming/MethodParameterName



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# File 'lib/ea/diagram/element_renderers/class_renderer.rb', line 206

def render_text_element(text, x, y, style, css_class, options = {}) # rubocop:disable Metrics/AbcSize,Metrics/CyclomaticComplexity,Metrics/MethodLength,Metrics/PerceivedComplexity,Metrics/ParameterLists,Naming/MethodParameterName
  return "" unless text

  font_size = options[:font_size] || style[:font_size] || "7pt"
  font_weight = options[:font_weight] || style[:font_weight] || "0"
  font_style = options[:font_style] || style[:font_style] || "normal"
  font_family = options[:font_family] || style[:font_family] ||
    "Cambria"
  fill_color = options[:fill] || style[:text_color] || "#000000"
  text_anchor = options[:text_anchor] || "middle"

  # Calculate text length approximation
  # (EA uses this for precise positioning)
  text_length = calculate_text_length(text, font_size)

  # Build transform attribute if needed
  transform_attr = ""
  if options[:rotate] && options[:rotate] != 0
    transform_attr = "transform=\"rotate(#{options[:rotate]} " \
                     "#{x} #{y})\""
  end

  # Text stroke styling (EA uses this for text elements)
  text_stroke = options[:text_stroke] ||
    style[:text_stroke] ||
    "#000000"
  text_stroke_opacity = options[:text_stroke_opacity] ||
    style[:text_stroke_opacity] || "0.00"
  text_stroke_width = options[:text_stroke_width] ||
    style[:text_stroke_width] || "0"

  <<~SVG
    <text x="#{x}.00"
          y="#{y}.00"
          text-anchor="#{text_anchor}"
          class="#{css_class}"
          #{"textLength=\"#{text_length}\"" if text_length.positive?}
          style="font-family:#{font_family}; font-weight:#{font_weight}; font-style:#{font_style}; font-size:#{font_size}; fill:#{fill_color};fill-opacity:1.00; stroke:#{text_stroke}; stroke-opacity:#{text_stroke_opacity} stroke-width:#{text_stroke_width}; white-space: pre;"
          xml:space="preserve"
          #{transform_attr}>
      #{escape_text(text)}
    </text>
  SVG
end

#visibility_symbol(visibility) ⇒ Object 



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# File 'lib/ea/diagram/element_renderers/class_renderer.rb', line 286

def visibility_symbol(visibility)
  case visibility&.to_s
  when "public" then "+"
  when "private" then "-"
  when "protected" then "#"
  when "package" then "~"
  else ""
  end
end