Class: Prawn::ObjectStore

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/prawn/object_store.rb

Instance Method Summary collapse

Constructor Details

#initialize(info = {}) ⇒ ObjectStore

Returns a new instance of ObjectStore.



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# File 'lib/prawn/object_store.rb', line 12

def initialize(info={})
  @objects = {}
  @identifiers = []
  
  # Create required PDF roots
  @info    = ref(info).identifier
  @pages   = ref(:Type => :Pages, :Count => 0, :Kids => []).identifier
  @root    = ref(:Type => :Catalog, :Pages => pages).identifier
end

Instance Method Details

#[](id) ⇒ Object 



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# File 'lib/prawn/object_store.rb', line 53

def [](id)
  @objects[id]
end

#each ⇒ Object 



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# File 'lib/prawn/object_store.rb', line 47

def each
  @identifiers.each do |id|
    yield @objects[id]
  end
end

#push(*args, &block) ⇒ Object Also known as: <<

Adds the given reference to the store and returns the reference object. If the object provided is not a Prawn::Reference, one is created from the arguments provided.



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# File 'lib/prawn/object_store.rb', line 35

def push(*args, &block)
  reference = if args.first.is_a?(Prawn::Reference)
          args.first
        else
          Prawn::Reference.new(*args, &block)
        end
  @objects[reference.identifier] = reference
  @identifiers << reference.identifier
  reference
end

#ref(data, &block) ⇒ Object 



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# File 'lib/prawn/object_store.rb', line 22

def ref(data, &block)
  push(size + 1, data, &block)
end

#size ⇒ Object Also known as: length 



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# File 'lib/prawn/object_store.rb', line 57

def size
  @identifiers.size
end