Class: Victor::SVGBase

Inherits:
Object
  • Object
show all
Defined in:
lib/victor/svg_base.rb

Direct Known Subclasses

SVG

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(attributes = nil, &block) ⇒ SVGBase

Returns a new instance of SVGBase.



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# File 'lib/victor/svg_base.rb', line 7

def initialize(attributes = nil, &block)
  setup attributes
  @content = []
  build &block if block_given?
end

Instance Attribute Details

#content ⇒ Object (readonly)

Returns the value of attribute content.



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# File 'lib/victor/svg_base.rb', line 5

def content
  @content
end

#svg_attributes ⇒ Object (readonly)

Returns the value of attribute svg_attributes.



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# File 'lib/victor/svg_base.rb', line 5

def svg_attributes
  @svg_attributes
end

#template ⇒ Object

Returns the value of attribute template.



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# File 'lib/victor/svg_base.rb', line 4

def template
  @template
end

Instance Method Details

#<<(additional_content) ⇒ Object Also known as: append 



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# File 'lib/victor/svg_base.rb', line 13

def <<(additional_content)
  content.push additional_content.to_s
end

#build(&block) ⇒ Object 



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# File 'lib/victor/svg_base.rb', line 32

def build(&block)
  self.instance_eval(&block)
end

#css(defs = nil) ⇒ Object 



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# File 'lib/victor/svg_base.rb', line 65

def css(defs = nil)
  @css ||= {}
  @css = defs if defs
  @css
end

#css=(defs) ⇒ Object 



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# File 'lib/victor/svg_base.rb', line 71

def css=(defs)
  @css = defs
end

#element(name, value = nil, attributes = {}, &_block) ⇒ Object 



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# File 'lib/victor/svg_base.rb', line 36

def element(name, value=nil, attributes={}, &_block)
  if value.is_a? Hash
    attributes = value
    value = nil
  end

  escape = true

  if name.to_s.end_with? '!'
    escape = false
    name = name[0..-2]
  end

  attributes = Attributes.new attributes
  empty_tag = name.to_s == '_'

  if block_given? || value
    content.push "<#{name} #{attributes}".strip + ">" unless empty_tag
    if value
      content.push(escape ? value.to_s.encode(xml: :text) : value)
    else
      yield
    end
    content.push "</#{name}>" unless empty_tag
  else      
    content.push "<#{name} #{attributes}/>"
  end
end

#render(template: nil) ⇒ Object 



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# File 'lib/victor/svg_base.rb', line 75

def render(template: nil)
  @template = template if template
  css_handler = CSS.new css

  svg_template % {
    css: css_handler,
    style: css_handler.render,
    attributes: svg_attributes,
    content: content.join("\n")
  }
end

#save(filename, template: nil) ⇒ Object 



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# File 'lib/victor/svg_base.rb', line 91

def save(filename, template: nil)
  filename = "#{filename}.svg" unless filename =~ /\..{2,4}$/
  File.write filename, render(template: template)
end

#setup(attributes = nil) ⇒ Object 



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# File 'lib/victor/svg_base.rb', line 18

def setup(attributes = nil)
  attributes ||= {}
  attributes[:width] ||= "100%"
  attributes[:height] ||= "100%"

  if attributes[:template]
    @template = attributes.delete :template
  elsif !@template
    @template = :default
  end

  @svg_attributes = Attributes.new attributes
end

#to_s ⇒ Object 



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# File 'lib/victor/svg_base.rb', line 87

def to_s
  content.join "\n"
end