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require 'ncurses'
module Interface
def self.keytable(key)
case key
when 12
'<redraw>'
when ?\n
'<cr>'
when ?\b, Ncurses::KEY_BACKSPACE, 127
'<bs>'
when Ncurses::KEY_RIGHT
'<right>'
when Ncurses::KEY_LEFT
'<left>'
when Ncurses::KEY_UP
'<up>'
when Ncurses::KEY_DOWN
'<down>'
when ?\e
'<esc>'
# keep spaces as they are, makes more sense
# when ?\s
# '<space>'
when Ncurses::KEY_BTAB
'<s-tab>'
when 9
'<tab>'
when 1..26 # CTRL + ...
"<c-#{(key+96).chr}>"
when 32..127
key.chr
else
log(key)
''
end
end
def self.included(this)
@@window = Ncurses.initscr
starti
end
# (Re)Start the Interface
def starti
@@running = true
@@screen = Ncurses.stdscr
@@screen.keypad(true)
Ncurses.start_color
Ncurses.use_default_colors
Ncurses.noecho
Ncurses.curs_set 0
Ncurses.halfdelay(200)
@@colortable = []
end
# Close the Interface
def closei
@@running = false
Ncurses.echo
Ncurses.nocbreak
Ncurses.curs_set 1
Ncurses.endwin
end
def running?() @@running end
def cleari
Ncurses.mvaddstr(0, 0, ' ' * (lines * cols))
end
def geti
Interface::keytable(Ncurses.getch)
end
def set_title(x)
print "\e]2;#{x}\007"
end
def lines
Ncurses.LINES
end
def cols
Ncurses.COLS
end
def movi(y=0, x=0)
y < 0 and y += lines
Ncurses.move(y, x)
end
def puti *args
case args.size
when 1
Ncurses.addstr(args[0].to_s)
when 2
if (y = args[0]) < 0 then y += Ncurses.LINES end
Ncurses.mvaddstr(y, 0, args[1].to_s)
when 3
if (y = args[0]) < 0 then y += Ncurses.LINES end
Ncurses.mvaddstr(y, args[1], args[2].to_s)
end
end
def color(fg = -1, bg = -1)
if OPTIONS['color']
Ncurses.color_set(get_color(fg,bg), nil)
end
end
def color_at y, x=0, len=-1, fg=-1, bg=-1, attributes=0
if OPTIONS['color']
if y < 0 then y += Ncurses.LINES end
Ncurses.mvchgat(y, x, len, attributes, get_color(fg, bg), nil)
end
end
def color_bold_at y, x=0, len=-1, fg=-1, bg=-1
color_at(y, x, len, fg, bg, attributes = Ncurses::A_BOLD)
end
def color_reverse_bold_at y, x=0, len=-1, fg=-1, bg=-1
if OPTIONS['color']
color_at(y, x, len, fg, bg, Ncurses::A_REVERSE | Ncurses::A_BOLD)
else
Ncurses.mvchgat(y, x, len, Ncurses::A_REVERSE | Ncurses::A_BOLD, 0, nil)
end
end
alias color_bold_reverse_at color_reverse_bold_at
def color_reverse_at y, x=0, len=-1, fg=-1, bg=-1
if OPTIONS['color']
color_at(y, x, len, fg, bg, Ncurses::A_REVERSE)
else
Ncurses.mvchgat(y, x, len, Ncurses::A_REVERSE, 0, nil)
end
end
def get_color(fg, bg)
n = bg+2 + 9*(fg+2)
color = @@colortable[n]
unless color
# create a new pair
size = @@colortable.reject{|x| x.nil? }.size + 1
Ncurses::init_pair(size, fg, bg)
color = @@colortable[n] = size
end
return color
end
def bold(b = true)
if b
Ncurses.attron(Ncurses::A_BOLD)
else
Ncurses.attroff(Ncurses::A_BOLD)
end
end
def reverse(b = true)
if b
Ncurses.attron(Ncurses::A_REVERSE)
else
Ncurses.attroff(Ncurses::A_REVERSE)
end
end
end
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