Class: Ea::Svg::EaEmitter::GhostLabels

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

Overview

Emits ghost classifier name <text> elements for connector endpoints that reference off-canvas classifiers. Each ghost label appears as italic text near the connector's on-canvas endpoint.

Constant Summary collapse

DEFAULT_FAMILY = 
"Carlito"
DEFAULT_SIZE = 
9
DEFAULT_UNIT = 
"pt"
DEFAULT_FILL = 
"#000000"

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(diagram, canvas: nil, family: DEFAULT_FAMILY, size: DEFAULT_SIZE, size_unit: DEFAULT_UNIT, fill: DEFAULT_FILL) ⇒ GhostLabels

Returns a new instance of GhostLabels.



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# File 'lib/ea/svg/ea_emitter/ghost_labels.rb', line 18

def initialize(diagram, canvas: nil, family: DEFAULT_FAMILY,
               size: DEFAULT_SIZE, size_unit: DEFAULT_UNIT,
               fill: DEFAULT_FILL)
  @diagram = diagram
  @canvas = canvas
  @family = family
  @size = size
  @size_unit = size_unit
  @fill = fill
end

Instance Attribute Details

#canvas ⇒ Object (readonly)

Returns the value of attribute canvas.



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# File 'lib/ea/svg/ea_emitter/ghost_labels.rb', line 16

def canvas
  @canvas
end

#diagram ⇒ Object (readonly)

Returns the value of attribute diagram.



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# File 'lib/ea/svg/ea_emitter/ghost_labels.rb', line 16

def diagram
  @diagram
end

#family ⇒ Object (readonly)

Returns the value of attribute family.



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# File 'lib/ea/svg/ea_emitter/ghost_labels.rb', line 16

def family
  @family
end

#fill ⇒ Object (readonly)

Returns the value of attribute fill.



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# File 'lib/ea/svg/ea_emitter/ghost_labels.rb', line 16

def fill
  @fill
end

#size ⇒ Object (readonly)

Returns the value of attribute size.



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# File 'lib/ea/svg/ea_emitter/ghost_labels.rb', line 16

def size
  @size
end

#size_unit ⇒ Object (readonly)

Returns the value of attribute size_unit.



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# File 'lib/ea/svg/ea_emitter/ghost_labels.rb', line 16

def size_unit
  @size_unit
end

Instance Method Details

#render ⇒ Object 



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

def render
  texts = visible_connectors.flat_map do |connector|
    (connector.ghost_labels || []).map { |g| text_for(g) }
  end
  return "" if texts.empty?

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