Class: Pdfrb::Font::Type1::FontMetrics

Inherits:
Object
  • Object
show all
Defined in:
lib/pdfrb/font/type1/font_metrics.rb

Overview

Type1 font metrics wrapper. Delegates to AFMParser for the 14 standard fonts; provides glyph-width lookup.

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(font_name, metrics) ⇒ FontMetrics

Returns a new instance of FontMetrics.



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# File 'lib/pdfrb/font/type1/font_metrics.rb', line 11

def initialize(font_name, metrics)
  @font_name = font_name
  @metrics = metrics
end

Instance Attribute Details

#font_name ⇒ Object (readonly)

Returns the value of attribute font_name.



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# File 'lib/pdfrb/font/type1/font_metrics.rb', line 9

def font_name
  @font_name
end

#metrics ⇒ Object (readonly)

Returns the value of attribute metrics.



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# File 'lib/pdfrb/font/type1/font_metrics.rb', line 9

def metrics
  @metrics
end

Class Method Details

.for_standard_font(name) ⇒ Object 



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# File 'lib/pdfrb/font/type1/font_metrics.rb', line 16

def self.for_standard_font(name)
  afm_path = File.join(Pdfrb::DataDir.root, "afm", "#{name}.afm")
  return nil unless File.exist?(afm_path)

  metrics = AFMParser.from_file(afm_path)
  new(name, metrics)
end

Instance Method Details

#ascender ⇒ Object 



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# File 'lib/pdfrb/font/type1/font_metrics.rb', line 32

def ascender
  @metrics.ascender
end

#bbox ⇒ Object 



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# File 'lib/pdfrb/font/type1/font_metrics.rb', line 28

def bbox
  @metrics.bbox
end

#cap_height ⇒ Object 



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# File 'lib/pdfrb/font/type1/font_metrics.rb', line 40

def cap_height
  @metrics.cap_height
end

#descender ⇒ Object 



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# File 'lib/pdfrb/font/type1/font_metrics.rb', line 36

def descender
  @metrics.descender
end

#width_for(glyph_name) ⇒ Object 



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# File 'lib/pdfrb/font/type1/font_metrics.rb', line 24

def width_for(glyph_name)
  @metrics.width_for(glyph_name)
end