Module: Prawn::Component::DocumentExtensions

Defined in:
lib/prawn/component/document_extensions.rb

Instance Method Summary collapse

Instance Method Details

#data_source(name) ⇒ Object 



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# File 'lib/prawn/component/document_extensions.rb', line 4

def data_source(name)
  define_singleton_method(name) do
    @data_source ||= {}
    @data_source[name] ||= yield
  end
end

#draw(component, params = {}) ⇒ Object

consider adding support for padding and if we ever allow dynamic rendering, margins



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# File 'lib/prawn/component/document_extensions.rb', line 13

def draw(component, params={})
  if Symbol === component
    component = Prawn::Component.definitions[component]
  end

  box = params.delete(:box)
  border = params.delete(:border)

  if box.nil?
    component.new(self, params).draw
    stroke_bounds if border
  elsif box.kind_of?(Prawn::Document::GridBox) # FIXME: Massive duplication + explicit type check
    box.bounding_box do
      bounds.define_singleton_method(:move_past_bottom) do
        raise Prawn::Errors::CannotFit
      end

      component.new(self, params).draw
      stroke_bounds if border
    end
  else
    left, top, width, height = box

    top  = top >= 0 ? bounds.top - top : top*-1
    left = left >= 0 ? left : bounds.right - left*-1

    bounding_box([left, top], :width => width, :height => height) do
      bounds.define_singleton_method(:move_past_bottom) do
        raise Prawn::Errors::CannotFit
      end

      component.new(self, params).draw
      stroke_bounds if border
    end
  end
end