Class: Krill::Fragment

Inherits:
Object
  • Object
show all
Defined in:
lib/krill/fragment.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(text, format_state) ⇒ Fragment

Returns a new instance of Fragment.



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# File 'lib/krill/fragment.rb', line 11

def initialize(text, format_state)
  @format_state = format_state
  @font = format_state.fetch(:font)
  @word_spacing = 0

  # keep the original value of "text", so we can reinitialize @text if formatting parameters
  #   like text direction are changed
  @original_text = text
  @text = process_text(@original_text)
end

Instance Attribute Details

#ascender ⇒ Object

Returns the value of attribute ascender.



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# File 'lib/krill/fragment.rb', line 5

def ascender
  @ascender
end

#baseline ⇒ Object

Returns the value of attribute baseline.



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# File 'lib/krill/fragment.rb', line 6

def baseline
  @baseline
end

#descender ⇒ Object

Returns the value of attribute descender.



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# File 'lib/krill/fragment.rb', line 5

def descender
  @descender
end

#font ⇒ Object (readonly) Also known as: formatter

Returns the value of attribute font.



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# File 'lib/krill/fragment.rb', line 8

def font
  @font
end

#format_state ⇒ Object (readonly)

Returns the value of attribute format_state.



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# File 'lib/krill/fragment.rb', line 3

def format_state
  @format_state
end

#left ⇒ Object

Returns the value of attribute left.



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# File 'lib/krill/fragment.rb', line 6

def left
  @left
end

#line_height ⇒ Object

Returns the value of attribute line_height.



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# File 'lib/krill/fragment.rb', line 5

def line_height
  @line_height
end

#text ⇒ Object (readonly)

Returns the value of attribute text.



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# File 'lib/krill/fragment.rb', line 3

def text
  @text
end

#width ⇒ Object 



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# File 'lib/krill/fragment.rb', line 22

def width
  return @width if @word_spacing.zero?
  @width + @word_spacing * space_count
end

#word_spacing ⇒ Object

Returns the value of attribute word_spacing.



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# File 'lib/krill/fragment.rb', line 6

def word_spacing
  @word_spacing
end

Instance Method Details

#bottom ⇒ Object 



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# File 'lib/krill/fragment.rb', line 88

def bottom
  baseline - descender
end

#character_spacing ⇒ Object 



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# File 'lib/krill/fragment.rb', line 39

def character_spacing
  formatter.character_spacing
end

#default_direction=(direction) ⇒ Object 



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# File 'lib/krill/fragment.rb', line 64

def default_direction=(direction)
  unless @format_state[:direction]
    @format_state[:direction] = direction
    @text = process_text(@original_text)
  end
end

#direction ⇒ Object 



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# File 'lib/krill/fragment.rb', line 60

def direction
  @format_state[:direction]
end

#height ⇒ Object 



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# File 'lib/krill/fragment.rb', line 27

def height
  top - bottom
end

#include_trailing_white_space! ⇒ Object 



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# File 'lib/krill/fragment.rb', line 71

def include_trailing_white_space!
  @format_state.delete(:exclude_trailing_white_space)
  @text = process_text(@original_text)
end

#right ⇒ Object 



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# File 'lib/krill/fragment.rb', line 80

def right
  left + width
end

#space_count ⇒ Object 



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# File 'lib/krill/fragment.rb', line 76

def space_count
  @text.count(" ")
end

#strikethrough_points ⇒ Object 



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# File 'lib/krill/fragment.rb', line 55

def strikethrough_points
  y = baseline + ascender * 0.3
  [[left, y], [right, y]]
end

#subscript? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/krill/fragment.rb', line 35

def subscript?
  formatter.subscript?
end

#superscript? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/krill/fragment.rb', line 31

def superscript?
  formatter.superscript?
end

#top ⇒ Object 



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# File 'lib/krill/fragment.rb', line 84

def top
  baseline + ascender
end

#underline_points ⇒ Object 



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# File 'lib/krill/fragment.rb', line 50

def underline_points
  y = baseline - 1.25
  [[left, y], [right, y]]
end

#y_offset ⇒ Object 



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# File 'lib/krill/fragment.rb', line 43

def y_offset
  if subscript? then -descender
  elsif superscript? then 0.85 * ascender
  else 0
  end
end