Module: FFI::NCurses::ACS

Included in:
FFI::NCurses
Defined in:
lib/ffi-ncurses/acs.rb

Instance Method Summary collapse

Instance Method Details

#define_acs(name, char) ⇒ Object 



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# File 'lib/ffi-ncurses/acs.rb', line 13

def define_acs(name, char)
  maybe_const_set name, acs_map[char[0].ord]
end

#define_acs_constants ⇒ Object

We have to define these dynamically as =acs_map= is not initialized until =init_scr= has been called



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# File 'lib/ffi-ncurses/acs.rb', line 18

def define_acs_constants
  #          Name           Default Description
  # -------------------------------------------
  define_acs :ACS_ULCORNER, 'l'   # upper left corner
  define_acs :ACS_LLCORNER, 'm'   # lower left corner
  define_acs :ACS_URCORNER ,'k'   # upper right corner
  define_acs :ACS_LRCORNER ,'j'   # lower right corner
  define_acs :ACS_LTEE     ,'t'   # tee pointing right
  define_acs :ACS_RTEE     ,'u'   # tee pointing left
  define_acs :ACS_BTEE     ,'v'   # tee pointing up
  define_acs :ACS_TTEE     ,'w'   # tee pointing down
  define_acs :ACS_HLINE    ,'q'   # horizontal line
  define_acs :ACS_VLINE    ,'x'   # vertical line
  define_acs :ACS_PLUS     ,'n'   # large plus or crossover
  define_acs :ACS_S1       ,'o'   # scan line 1
  define_acs :ACS_S9       ,'s'   # scan line 9
  define_acs :ACS_DIAMOND  ,'`'   # diamond
  define_acs :ACS_CKBOARD  ,'a'   # checker board (stipple)
  define_acs :ACS_DEGREE   ,'f'   # degree symbol
  define_acs :ACS_PLMINUS  ,'g'   # plus/minus
  define_acs :ACS_BULLET   ,'~'   # bullet
  # Teletype 5410v1 symbols begin here
  define_acs :ACS_LARROW   ,','   # arrow pointing left
  define_acs :ACS_RARROW   ,'+'   # arrow pointing right
  define_acs :ACS_DARROW   ,'.'   # arrow pointing down
  define_acs :ACS_UARROW   ,'-'   # arrow pointing up
  define_acs :ACS_BOARD    ,'h'   # board of squares
  define_acs :ACS_LANTERN  ,'i'   # lantern symbol
  define_acs :ACS_BLOCK    ,'0'   # solid square block

  # These aren't documented, but a lot of System Vs have them anyway
  # (you can spot pprryyzz{{||}} in a lot of AT&T terminfo strings).
  # The ACS_names may not match AT&T's, our source didn't know them.

  define_acs :ACS_S3       ,'p'   # scan line 3
  define_acs :ACS_S7       ,'r'   # scan line 7 - SOH: seems to be same as ACS_HLINE
  define_acs :ACS_LEQUAL   ,'y'   # less/equal
  define_acs :ACS_GEQUAL   ,'z'   # greater/equal
  define_acs :ACS_PI       ,'{'   # Pi
  define_acs :ACS_NEQUAL   ,'|'   # not equal
  define_acs :ACS_STERLING ,'}'   # UK pound sign

  # Line drawing ACS names are of the form ACS_trbl, where t is the top, r
  # is the right, b is the bottom, and l is the left.  t, r, b, and l might
  # be B (blank), S (single), D (double), or T (thick).  The subset defined
  # here only uses B and S.
  #
  # See the WACS_x_trbl constants below for the full set.

  maybe_const_set :ACS_BSSB, ACS_ULCORNER
  maybe_const_set :ACS_SSBB, ACS_LLCORNER
  maybe_const_set :ACS_BBSS, ACS_URCORNER
  maybe_const_set :ACS_SBBS, ACS_LRCORNER
  maybe_const_set :ACS_SBSS, ACS_RTEE
  maybe_const_set :ACS_SSSB, ACS_LTEE
  maybe_const_set :ACS_SSBS, ACS_BTEE
  maybe_const_set :ACS_BSSS, ACS_TTEE
  maybe_const_set :ACS_BSBS, ACS_HLINE
  maybe_const_set :ACS_SBSB, ACS_VLINE
  maybe_const_set :ACS_SSSS, ACS_PLUS
end

#maybe_const_set(name, value) ⇒ Object 



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# File 'lib/ffi-ncurses/acs.rb', line 7

def maybe_const_set(name, value)
  if !const_defined?(name)
    const_set name, value
  end
end