Module: Ncurses

Defined in:
lib/sup/colormap.rb,
lib/sup/util/ncurses.rb

Defined Under Namespace

Modules: Form Classes: CharCode

Constant Summary collapse

COLOR_DEFAULT = 
-1
NUM_COLORS = 
`tput colors`.to_i
MAX_PAIRS = 
`tput pairs`.to_i
KEY_ENTER = 
10
KEY_CANCEL =

ctrl-g

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KEY_TAB = 
9

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.color!(name, value) ⇒ Object 



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# File 'lib/sup/colormap.rb', line 7

def self.color! name, value
  const_set "COLOR_#{name.to_s.upcase}", value
end

.cols ⇒ Object 



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# File 'lib/sup/util/ncurses.rb', line 186

def cols
  lame, lamer = [], []
  stdscr.getmaxyx lame, lamer
  lamer.first
end

.curx ⇒ Object 



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# File 'lib/sup/util/ncurses.rb', line 192

def curx
  lame, lamer = [], []
  stdscr.getyx lame, lamer
  lamer.first
end

.mutex ⇒ Object 



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# File 'lib/sup/util/ncurses.rb', line 237

def mutex; @mutex ||= Mutex.new; end

.prepare_form_driver ⇒ Object

Create replacement wrapper for form_driver_w (), which is not (yet) a standard function in ncurses. Some systems (Mac OS X) does not have a working form_driver that accepts wide chars. We are just falling back to form_driver, expect problems.



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# File 'lib/sup/util/ncurses.rb', line 201

def prepare_form_driver
  if not defined? Form.form_driver_w
    warn "Your Ncursesw does not have a form_driver_w function (wide char aware), " \
         "non-ASCII chars may not work on your system."
    Form.module_eval <<-FRM_DRV, __FILE__, __LINE__ + 1
      def form_driver_w form, status, c
        form_driver form, c
      end
      module_function :form_driver_w
      module DriverHelpers
        def form_driver c
          if !c.dumb? && c.printable?
            c.each_byte do |code|
              Ncurses::Form.form_driver @form, code
            end
          else
            Ncurses::Form.form_driver @form, c.code
          end
        end
      end
    FRM_DRV
  end # if not defined? Form.form_driver_w
  if not defined? Ncurses.get_wch
    warn "Your Ncursesw does not have a get_wch function (wide char aware), " \
         "non-ASCII chars may not work on your system."
    Ncurses.module_eval <<-GET_WCH, __FILE__, __LINE__ + 1
      def get_wch
        c = getch
        c == Ncurses::ERR ? [c, 0] : [Ncurses::OK, c]
      end
      module_function :get_wch
    GET_WCH
    CharCode.dumb!
  end # if not defined? Ncurses.get_wch
end

.rows ⇒ Object

class CharCode



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# File 'lib/sup/util/ncurses.rb', line 180

def rows
  lame, lamer = [], []
  stdscr.getmaxyx lame, lamer
  lame.first
end

.sync(&b) ⇒ Object 



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# File 'lib/sup/util/ncurses.rb', line 238

def sync &b; mutex.synchronize(&b); end

Instance Method Details

#x ⇒ Object

xterm 24-shade grayscale



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# File 'lib/sup/colormap.rb', line 12

Ncurses::NUM_COLORS.times { |x| color! x, x }