Class: TChart::TeXBuilder

Inherits:
Object
  • Object
show all
Defined in:
lib/tchart/process/tex_builder.rb

Overview

Responsible for generating TikZ/TeX code for the various chart elements, including labels, bars, (grid)lines, etc. Also responsible for escaping TeX special characters, such as {, }, , etc., and for accumulating the generated code.

Instance Method Summary collapse

Constructor Details

#initialize ⇒ TeXBuilder

Returns a new instance of TeXBuilder.



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# File 'lib/tchart/process/tex_builder.rb', line 13

def initialize
  @output = StringIO.new
end

Instance Method Details

#bar(from, to, style) ⇒ Object 



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# File 'lib/tchart/process/tex_builder.rb', line 37

def bar(from, to, style)
  x_mid, width = to_tikz_coords(from.x, to.x)
  @output << "\\node [#{style}] at (#{f x_mid}mm, #{f from.y}mm) [minimum width = #{f width}mm] {};\n"
end

#begin_chart ⇒ Object 



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# File 'lib/tchart/process/tex_builder.rb', line 17

def begin_chart
  @output << "\\tikzpicture\n"
end

#comment(text) ⇒ Object 



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# File 'lib/tchart/process/tex_builder.rb', line 25

def comment(text)
  @output << "% #{escape_tex_special_chars text.to_s}\n"
end

#end_chart ⇒ Object 



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# File 'lib/tchart/process/tex_builder.rb', line 21

def end_chart
  @output << "\\endtikzpicture\n"
end

#gridline(from, to, style) ⇒ Object 



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# File 'lib/tchart/process/tex_builder.rb', line 29

def gridline(from, to, style)
  @output << "\\draw [#{style}] (#{f from.x}mm, #{f from.y}mm) -- (#{f to.x}mm, #{f to.y}mm);\n"
end

#label(coord, width, style, text) ⇒ Object 



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# File 'lib/tchart/process/tex_builder.rb', line 33

def label(coord, width, style, text)
  @output << "\\node [#{style}, text width = #{f width}mm] at (#{f coord.x}mm, #{f coord.y}mm) {#{escape_tex_special_chars text.to_s}};\n"
end

#to_s ⇒ Object

> String



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# File 'lib/tchart/process/tex_builder.rb', line 42

def to_s # => String
  @output.string
end