Module: RBText::Cursor

Included in:
Cr
Defined in:
lib/rbtext/cursor.rb

Constant Summary collapse

@@methods = 
[
  :up,
  :down,
  :left,
  :right,
  :beginning_of_line,
  :go_to_pos,
  :pos
]

Instance Method Summary collapse

Instance Method Details

#beginning_of_line ⇒ Object 



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# File 'lib/rbtext/cursor.rb', line 52

def beginning_of_line
  print "\r"
end

#down(num = 1) ⇒ Object 



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# File 'lib/rbtext/cursor.rb', line 17

def down(num=1)
  print "\033[#{num.to_i}B"
end

#go_to_pos(x, y = nil) ⇒ Object 



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# File 'lib/rbtext/cursor.rb', line 29

def go_to_pos(x, y=nil)
  if x.class == Array && !y
    y = x[1]
    x = x[0]
  end

  print "\033[#{y};#{x}H"
  print "\033[#{y};#{x}f"
end

#left(num = 1) ⇒ Object 



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# File 'lib/rbtext/cursor.rb', line 21

def left(num=1)
  print "\033[#{num.to_i}D"
end

#pos ⇒ Object 



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# File 'lib/rbtext/cursor.rb', line 39

def pos
  res = ''
  $stdin.raw do |stdin|
    $stdout << "\e[6n"
    $stdout.flush
    while (c = stdin.getc) != 'R'
      res << c if c
    end
  end
  m = res.match /(?<row>\d+);(?<column>\d+)/
  return [Integer(m[:column]), Integer(m[:row])]
end

#right(num = 1) ⇒ Object 



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# File 'lib/rbtext/cursor.rb', line 25

def right(num=1)
  print "\033[#{num.to_i}C"
end

#up(num = 1) ⇒ Object 



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# File 'lib/rbtext/cursor.rb', line 13

def up(num=1)
  print "\033[#{num.to_i}A"
end