Class: CursesRenderer

Inherits:
Object
  • Object
show all
Defined in:
lib/delve/display/curses_renderer.rb

Constant Summary collapse

@@colors = 
{
  :black      => Curses::COLOR_BLACK,
  :red        => Curses::COLOR_RED,
  :blue       => Curses::COLOR_BLUE,
  :white      => Curses::COLOR_WHITE,
  :cyan       => Curses::COLOR_CYAN,
  :green      => Curses::COLOR_GREEN,
  :magenta    => Curses::COLOR_MAGENTA,
  :yellow     => Curses::COLOR_YELLOW
}

Instance Method Summary collapse

Instance Method Details

#draw(x, y, char, fg, bg) ⇒ Object 



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# File 'lib/delve/display/curses_renderer.rb', line 38

def draw(x, y, char, fg, bg)
  pair = "#{fg.to_s},#{bg.to_s}"
  if !@pairs.include? pair
    @pairs.push pair
    Curses.init_pair(@pairs.index(pair)+1, @@colors[fg], @@colors[bg])
  end
  # Seem to need to flip x and y
  index = @pairs.index(pair)+1
  Curses.setpos(y, x)
  Curses.attron(Curses.color_pair(index)) do
    begin
      Curses.addstr(char)
    rescue TypeError => e
      raise 'The char was ' + char.to_s
    end
  end
end

#exit ⇒ Object 



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# File 'lib/delve/display/curses_renderer.rb', line 25

def exit
  Curses.close_screen
end

#height ⇒ Object 



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# File 'lib/delve/display/curses_renderer.rb', line 60

def height
  Curses.lines
end

#init ⇒ Object 



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# File 'lib/delve/display/curses_renderer.rb', line 16

def init
  Curses.init_screen
  Curses.start_color
  Curses.nl
  Curses.noecho
  Curses.curs_set 0
  @pairs = Array.new
end

#render(data) ⇒ Object 



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# File 'lib/delve/display/curses_renderer.rb', line 29

def render(data)
  Curses.clear
  data.keys.each do |key|
    draw_data = data[key]
    draw(draw_data[:x], draw_data[:y], draw_data[:char], draw_data[:foreground], draw_data[:background])
  end
  Curses.refresh
end

#width ⇒ Object 



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# File 'lib/delve/display/curses_renderer.rb', line 56

def width
  Curses.cols
end