Class: Hieroglyph::Glyph

Inherits:
Object
  • Object
show all
Defined in:
lib/hieroglyph/glyph.rb

Constant Summary collapse

SHAPE_HANDLERS = 
{
  'circle' => 'report_invalid',
  'ellipse' => 'report_invalid',
  'line' => 'report_invalid',
  'polyline' => 'report_invalid',
  'rect' => 'report_invalid',
  'polygon' => 'convert_polygon',
  'path' => 'convert_path'
}
@@too_many_shapes = 
false
@@shape_found = 
false

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file, source, font) ⇒ Glyph

Returns a new instance of Glyph.



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# File 'lib/hieroglyph/glyph.rb', line 26

def initialize(file, source, font)
  @font = font
  set_name(file, source)
  @contents = Nokogiri::XML(File.new(file))
  Hieroglyph.log "Parsing #{@name}", 2
  @path = parse_shapes
end

Instance Attribute Details

#contents ⇒ Object

Returns the value of attribute contents.



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# File 'lib/hieroglyph/glyph.rb', line 8

def contents
  @contents
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/hieroglyph/glyph.rb', line 8

def name
  @name
end

#path ⇒ Object

Returns the value of attribute path.



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# File 'lib/hieroglyph/glyph.rb', line 8

def path
  @path
end

Instance Method Details

#convert_path(type, content) ⇒ Object 



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# File 'lib/hieroglyph/glyph.rb', line 74

def convert_path(type, content)
  path = Savage::Parser.parse(content['d'])
  flip(path)
end

#convert_polygon(type, content) ⇒ Object 



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# File 'lib/hieroglyph/glyph.rb', line 59

def convert_polygon(type, content)
  Hieroglyph.log 'polygon found - converting', 9
  points = content['points'].split(" ")
  Savage::Path.new do |path|
    start_position = points.shift.split(",")
    path.move_to(start_position[0], start_position[1])
    points.each do |point|
      position = point.split(",")
      path.line_to(position[0], position[1])
    end
    path.close_path
    flip(path)
  end
end

#flip(path) ⇒ Object 



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# File 'lib/hieroglyph/glyph.rb', line 91

def flip(path)
  path.subpaths.each do |subpath|
    subpath.directions.each do |direction|
      case direction
      when Savage::Directions::MoveTo
        if(direction.absolute?)
          direction.target.y = flip_y(direction.target.y)
        else
          direction.target.y = -1 * direction.target.y
        end
      when Savage::Directions::VerticalTo
        if(direction.absolute?)
          direction.target = flip_y(direction.target)
        else
          direction.target = -1 * direction.target
        end
      when Savage::Directions::LineTo
        if(direction.absolute?)
          direction.target.y = flip_y(direction.target.y)
        else
          direction.target.y = -1 * direction.target.y
        end
      when Savage::Directions::CubicCurveTo
        if(direction.absolute?)
          direction.control.y = flip_y(direction.control.y)
          direction.target.y = flip_y(direction.target.y)
          if(defined?(direction.control_1) && defined?(direction.control_1.y))
            direction.control_1.y = flip_y(direction.control_1.y)
          end
        else
          direction.control.y = -1 * direction.control.y
          direction.target.y = -1 * direction.target.y
          if(defined?(direction.control_1) && defined?(direction.control_1.y))
            direction.control_1.y = -1 * direction.control_1.y
          end
        end
      end
    end
  end
  path
end

#flip_y(value) ⇒ Object 



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# File 'lib/hieroglyph/glyph.rb', line 133

def flip_y(value)
  value = value.to_f
  value = (value - 500) * -1 + 500
  value = value - 25
end

#match(str, pattern_start, pattern, pattern_end) ⇒ Object 



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# File 'lib/hieroglyph/glyph.rb', line 23

def match(str, pattern_start, pattern, pattern_end)
end

#parse_shapes ⇒ Object 



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# File 'lib/hieroglyph/glyph.rb', line 45

def parse_shapes
  path = Savage::Path.new
  SHAPE_HANDLERS.each do |type, method|
    contents = @contents.root.css(type)
    unless contents.length == 0
      report_too_many if contents.length > 1
      report_too_many if @shape_found
      path = self.method(method).call(type, contents.first)
      @shape_found = true
    end
  end
  path
end

#report_invalid(type, content) ⇒ Object 



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# File 'lib/hieroglyph/glyph.rb', line 79

def report_invalid(type, content)
  Hieroglyph.error "#{type} found - this shape is invalid!", 4
  Hieroglyph.error "'make compound path' in your vector tool to fix", 4
end

#report_too_many ⇒ Object 



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# File 'lib/hieroglyph/glyph.rb', line 84

def report_too_many
  unless @too_many
    Hieroglyph.error 'too many shapes! your icon might look weird as a result', 4
    @too_many = true
  end
end

#set_name(file, source) ⇒ Object 



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# File 'lib/hieroglyph/glyph.rb', line 34

def set_name(file, source)
  @name = file.gsub(source, '').gsub('/', '')
  @name = @name.match(/^..*?(-|\.)/).to_s.chop
  unicode = @name.match(/^&#(x|X).*?;/).to_s.gsub(/^&#(x|X)/, '').gsub(/;/, '')
  unless unicode.empty?
    @font.unicode_values.push(unicode.to_s.upcase)
  else
    @font.characters.push(@name)
  end
end

#to_node ⇒ Object 



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# File 'lib/hieroglyph/glyph.rb', line 139

def to_node
  @path ? "<glyph unicode=\"#{@name}\" d=\"#{@path.to_command}\" />\n" : ''
end