Module: RubyText

Defined in:
lib/rubytext.rb,
lib/menu.rb,
lib/color.rb,
lib/version.rb,
lib/widgets.rb,
lib/rubytext.rb,
lib/settings.rb

Overview

Skeleton… Can’t put classes at top because of #initalize

Defined Under Namespace

Modules: Keys Classes: Effects, Window

Constant Summary collapse

Colors = 
[Black, Blue, Cyan, Green, Magenta, Red, White, Yellow]
VERSION = 
"0.0.61"
Path = 
File.expand_path(File.join(File.dirname(__FILE__)))

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.flags ⇒ Object

Hmm, all these are module-level.



4
5
6
7
 
# File 'lib/settings.rb', line 4

def self.flags
  @flags.uniq!
  @flags
end

.hide_cursor ⇒ Object 



106
107
108
 
# File 'lib/settings.rb', line 106

def self.hide_cursor
  X.curs_set(0)
end

.inverse_flag(flag) ⇒ Object

FIXME Refactor the Hal out of this.



11
12
13
14
15
16
17
18
 
# File 'lib/settings.rb', line 11

def self.inverse_flag(flag)
  sflag = flag.to_s
  if sflag[0] == "_"
    sflag[1..-1].to_sym
  else
    ("_" + sflag).to_sym
  end
end

.menu(r: 0, c: 0, items:, curr: 0) ⇒ Object 



23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
 
# File 'lib/menu.rb', line 23

def self.menu(r: 0, c: 0, items:, curr: 0)
  high = items.size + 2
  wide = items.map(&:length).max + 4
  saveback(high, wide, r, c)
  win = RubyText.window(high, wide, r, c, fg: White, bg: Blue)
  RubyText.set(:raw)
  X.stdscr.keypad(true)
  RubyText.hide_cursor
  sel = curr
  max = items.size - 1
  loop do
    items.each.with_index do |item, row|
      win.go row, 0
      color = sel == row ? Yellow : White
      win.puts color, " #{item} "
    end
    ch = getch
    case ch
      when X::KEY_UP
        sel -= 1 if sel > 0
      when X::KEY_DOWN
        sel += 1 if sel < max
      when 27
        restback(high, wide, r, c)
        return [nil, nil]
      when 10
        restback(high, wide, r, c)
        return [sel, items[sel]]
    end
  end
end

.method_missing(name, *args) ⇒ Object

For passing through arbitrary method calls to the lower level…



93
94
95
96
97
98
99
100
 
# File 'lib/settings.rb', line 93

def self.method_missing(name, *args)
  debug "method_missing: #{name}  #{args.inspect}"
  if name[0] == '_'
    X.send(name[1..-1], *args)
  else
    raise "#{name} #{args.inspect}" # NoMethodError
  end
end

.reset ⇒ Object 



56
57
58
 
# File 'lib/settings.rb', line 56

def self.reset
  rest_flags
end

.rest_flags ⇒ Object 



66
67
68
69
70
71
 
# File 'lib/settings.rb', line 66

def self.rest_flags
  @flags = @fstack.pop
  @flags.uniq!
rescue 
  @flags = @defaults
end

.restback(high, wide, r, c) ⇒ Object 



13
14
15
16
17
18
19
20
21
 
# File 'lib/menu.rb', line 13

def self.restback(high, wide, r, c)
  0.upto(high) do |h|
    0.upto(wide) do |w|
      STDSCR[h+r, w+c] = @save.shift
    end
  end
  STDSCR.go *@pos
  STDSCR.refresh
end

.save_flags ⇒ Object 



60
61
62
63
64
 
# File 'lib/settings.rb', line 60

def self.save_flags
  @fstack ||= []
  @flags.uniq!
  @fstack.push @flags
end

.saveback(high, wide, r, c) ⇒ Object 



3
4
5
6
7
8
9
10
11
 
# File 'lib/menu.rb', line 3

def self.saveback(high, wide, r, c)
  @pos = STDSCR.rc
  @save = []
  0.upto(high) do |h|
    0.upto(wide) do |w|
      @save << STDSCR[h+r, w+c]
    end
  end
end

.set(*args) ⇒ Object

Allow a block?



20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
 
# File 'lib/settings.rb', line 20

def self.set(*args)   # Allow a block?
  standard = [:cbreak, :raw, :echo, :keypad]
  @defaults = [:cbreak, :echo, :keypad, :cursor, :_raw]
  @flags = @defaults.dup
  save_flags
  args.each do |arg|
    @flags += [arg]
    inv = inverse_flag(arg)
    @flags -= [inv]
    @flags.uniq!
    flag = arg.to_s
    if standard.include?(flag.to_sym) || standard.include?(flag.sub(/no/, "_").to_sym)
      X.send(flag)
    elsif flag[0] == "_" && standard.include?(flag[1..-1].to_sym)
      flag.sub!(/^_/, "no")
      X.send(flag)
    else
      case flag.to_sym
        when :cursor
          X.curs_set(1)
        when :_cursor, :nocursor
          X.curs_set(0)
        else 
          self.stop
          rest_flags  # prevent propagating error in test
          raise RTError("flag = #{flag.inspect}")
      end
    end
  end

  if block_given?
    yield
    rest_flags
  end
end

.show_cursor ⇒ Object 



110
111
112
 
# File 'lib/settings.rb', line 110

def self.show_cursor
  X.curs_set(1)
end

.show_cursor! ⇒ Object 



114
115
116
 
# File 'lib/settings.rb', line 114

def self.show_cursor!
  X.curs_set(2)  # Doesn't work? Device-dependent?
end

.start(*args, log: nil, fg: nil, bg: nil, scroll: false) ⇒ Object 



73
74
75
76
77
78
79
80
81
82
83
84
 
# File 'lib/settings.rb', line 73

def self.start(*args, log: nil, fg: nil, bg: nil, scroll: false)
  $debug = File.new(log, "w") if log
  Object.const_set(:STDSCR, RubyText::Window.main(fg: fg, bg: bg, scroll: scroll))
  $stdscr = STDSCR
  fg, bg, cp = fb2cp(fg, bg)
  self.set(:_echo, :cbreak, :raw)  # defaults
  self.set(*args)  # override defaults
rescue => err
  debug(err.inspect)
  debug(err.backtrace)
  raise RTError("#{err}")
end

.stop ⇒ Object 



86
87
88
 
# File 'lib/settings.rb', line 86

def self.stop
  X.close_screen
end

.ticker(row: STDSCR.rows-1, col: 0, width: STDSCR.cols, fg: White, bg: Blue, text:, delay: 0.1) ⇒ Object 



2
3
4
5
6
7
8
9
10
11
12
13
14
 
# File 'lib/widgets.rb', line 2

def self.ticker(row: STDSCR.rows-1, col: 0, width: STDSCR.cols, 
                fg: White, bg: Blue, text:, delay: 0.1)
  text = text.gsub("\n", " ") + " "
  win = RubyText.window(1, width, row, col, border: false, fg: fg, bg: bg)
  leader = " "*width + text
  leader = text.chars.cycle.each_cons(width)
  width.times { win.rcprint 0, 0, leader.next.join }
  repeat = text.chars.cycle.each_cons(width)
  loop do   # Warning: loops forever
    win.rcprint 0, 0, repeat.next.join
    sleep delay
  end
end

.window(high, wide, r0, c0, border: true, fg: nil, bg: nil, scroll: false) ⇒ Object 



102
103
104
 
# File 'lib/settings.rb', line 102

def self.window(high, wide, r0, c0, border: true, fg: nil, bg: nil, scroll: false)
  RubyText::Window.new(high, wide, r0, c0, border, fg, bg, scroll)
end

Instance Method Details

#selector(r: 0, c: 0, rows: 10, cols: 20, items:, win:, callback:, quit: "q") ⇒ Object 



55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
 
# File 'lib/menu.rb', line 55

def selector(r: 0, c: 0, rows: 10, cols: 20, items:, 
             win:, callback:, quit: "q")
  high = rows
  wide = cols
  saveback(high, wide, r, c)
  menu_win = RubyText.window(high, wide, r, c, fg: White, bg: Blue)
  win2 = win
  handler = callback
  RubyText.set(:raw)
  X.stdscr.keypad(true)
  RubyText.hide_cursor
  sel = 0
  max = items.size - 1
  handler.call(0, items[0])
  loop do
    items.each.with_index do |item, row|
      menu_win.go row, 0
      color = sel == row ? Yellow : White
      menu_win.puts color, " #{item} "
    end
    ch = getch
    case ch
      when X::KEY_UP
        if sel > 0
          sel -= 1
          handler.call(sel, items[sel])
        end
      when X::KEY_DOWN
        if sel < max
          sel += 1
          handler.call(sel, items[sel])
        end
      when quit  # parameter
        exit
    end
  end
end