Class: RubyText::Window

Inherits:
Object
  • Object
show all
Includes:
Keys
Defined in:
lib/menu.rb,
lib/menu.rb,
lib/color.rb,
lib/output.rb,
lib/window.rb,
lib/rubytext.rb,
lib/navigation.rb

Overview

Reopening: Coordinate handling (1-based!)

Defined Under Namespace

Classes: GetString, Menu2D

Constant Summary collapse

ScreenStack = 
[]

Constants included from Keys

Keys::BS, Keys::Back, Keys::CtlD, Keys::DEL, Keys::Del, Keys::Delete, Keys::Down, Keys::EOF, Keys::ESC, Keys::Enter, Keys::Esc, Keys::Escape, Keys::F1, Keys::F10, Keys::F11, Keys::F12, Keys::F2, Keys::F3, Keys::F4, Keys::F5, Keys::F6, Keys::F7, Keys::F8, Keys::F9, Keys::LF, Keys::Left, Keys::NL, Keys::Right, Keys::TAB, Keys::Tab, Keys::Up

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(high = nil, wide = nil, r0 = 0, c0 = 0, border = false, fg = White, bg = Blue, scroll = false) ⇒ Window

Better to use Window.window IRL



24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
 
# File 'lib/window.rb', line 24

def initialize(high=nil, wide=nil, r0=0, c0=0, border=false, 
               fg=White, bg=Blue, scroll=false)
  @wide, @high, @r0, @c0 = wide, high, r0, c0
  @border, @fg, @bg      = border, fg, bg
  @cwin = Curses::Window.new(high, wide, r0, c0)
  colorize!(fg, bg)
  if @border
    @cwin.box(Vert, Horiz)
    @outer = @cwin
    @outer.refresh
    @cwin = Curses::Window.new(high-2, wide-2, r0+1, c0+1)
    colorize!(fg, bg)
  else
    @outer = @cwin
  end
  @rows, @cols = @cwin.maxy, @cwin.maxx  # unnecessary really...
  @width, @height = @cols + 2, @rows + 2 if @border
  @scrolling = scroll
  @cwin.scrollok(scroll) 
  @cwin.refresh
end

Instance Attribute Details

#bg ⇒ Object

Returns the value of attribute bg.



20
21
22
 
# File 'lib/window.rb', line 20

def bg
  @bg
end

#c0 ⇒ Object (readonly)

Returns the value of attribute c0.



19
20
21
 
# File 'lib/window.rb', line 19

def c0
  @c0
end

#cols ⇒ Object (readonly)

Returns the value of attribute cols.



18
19
20
 
# File 'lib/window.rb', line 18

def cols
  @cols
end

#cwin ⇒ Object (readonly)

Returns the value of attribute cwin.



18
19
20
 
# File 'lib/window.rb', line 18

def cwin
  @cwin
end

#fg ⇒ Object

Returns the value of attribute fg.



20
21
22
 
# File 'lib/window.rb', line 20

def fg
  @fg
end

#height ⇒ Object (readonly)

Returns the value of attribute height.



18
19
20
 
# File 'lib/window.rb', line 18

def height
  @height
end

#r0 ⇒ Object (readonly)

Returns the value of attribute r0.



19
20
21
 
# File 'lib/window.rb', line 19

def r0
  @r0
end

#rows ⇒ Object (readonly)

Returns the value of attribute rows.



18
19
20
 
# File 'lib/window.rb', line 18

def rows
  @rows
end

#scrolling(flag = true) ⇒ Object (readonly)

FIXME refactor bad code



91
92
93
 
# File 'lib/window.rb', line 91

def scrolling
  @scrolling
end

#width ⇒ Object (readonly)

Returns the value of attribute width.



18
19
20
 
# File 'lib/window.rb', line 18

def width
  @width
end

Class Method Details

.clear(win) ⇒ Object

delete this?



103
104
105
106
107
108
109
 
# File 'lib/output.rb', line 103

def self.clear(win)   # delete this?
  num = win.maxx * win.maxy - 1
  win.setpos(0, 0)
  win.addstr(' '*num)
  win.setpos(0, 0)
  win.refresh
end

.colorize!(cwin, fg, bg) ⇒ Object

Set up a window with fg/bg



45
46
47
48
49
50
51
52
53
54
55
56
57
58
 
# File 'lib/color.rb', line 45

def self.colorize!(cwin, fg, bg)
  cp = RubyText::Color.pair(fg, bg)
  cwin.color_set(cp)
  num = cwin.maxx * cwin.maxy
  cwin.setpos 0,0
  cwin.addstr(' '*num)
  cwin.setpos 0,0
  cwin.refresh
rescue => err
  File.open("/tmp/#{__method__}.out", "w") do |f|
    f.puts err
    f.puts err.backtrace
  end
end

.main(fg: White, bg: Blue, scroll: false) ⇒ Object 



46
47
48
49
50
51
52
53
54
55
56
57
58
 
# File 'lib/window.rb', line 46

def self.main(fg: White, bg: Blue, scroll: false)
  debug "Starting #main..."
  main_win = Curses.init_screen
  Curses.start_color
  self.colorize!(main_win, fg, bg)
  rows, cols = main_win.maxy, main_win.maxx
  win = self.make(main_win, rows, cols, 0, 0, border: false,
            fg: fg, bg: bg, scroll: scroll)
  debug "...started #main"
  win
rescue => err
  File.open("/tmp/main.out", "w") {|f| f.puts err.inspect; f.puts err.backtrace } 
end

.make(cwin, high, wide, r0, c0, border: true, fg: White, bg: Black, scroll: false) ⇒ Object

FIXME try again to inline this



62
63
64
65
66
67
68
69
70
71
72
73
74
 
# File 'lib/window.rb', line 62

def self.make(cwin, high, wide, r0, c0, border: true, fg: White, bg: Black, scroll: false)
  obj = self.allocate
  obj.instance_eval do 
    @outer = @cwin = cwin
    @wide, @high, @r0, @c0 = wide, high, r0, c0
    @fg, @bg = fg, bg
    @border = border
    @rows, @cols = high, wide
    @width, @height = @cols + 2, @rows + 2 if @border
  end
  obj.scrolling(scroll)
  obj
end

Instance Method Details

#[](r, c) ⇒ Object

def go(r0, c0)

  r, c = coords(r0, c0)
  save = self.rc
  goto r, c 
  if block_given?
    yield 
    goto *save
  end
end



138
139
140
141
142
143
144
145
 
# File 'lib/output.rb', line 138

def [](r, c)
  r0, c0 = self.rc
  @cwin.setpos(r, c)
  ch = @cwin.inch
  @cwin.setpos(r0, c0)
  ch %= 256
  ch.chr 
end

#[]=(r, c, char) ⇒ Object 



147
148
149
150
151
152
153
 
# File 'lib/output.rb', line 147

def []=(r, c, char)
  r0, c0 = self.rc
  @cwin.setpos(r, c)
  @cwin.addch(char[0].ord|Curses::A_NORMAL)
  @cwin.setpos(r0, c0)
  @cwin.refresh
end

#_putch(ch) ⇒ Object 



63
64
65
 
# File 'lib/output.rb', line 63

def _putch(ch)
  @cwin.addch(ch)
end

#add_title(str, align = :center) ⇒ Object 



76
77
78
79
80
81
82
83
84
85
86
87
 
# File 'lib/window.rb', line 76

def add_title(str, align = :center)
  raise "No border" unless @border
  len = str.length  # What if it's too long?
  start = case align
            when :left;   1
            when :center; (@outer.maxx - len)/2
            when :right;  @outer.maxx - len - 1
          end
  @outer.setpos 0, start
  @outer.addstr str
  @outer.refresh
end

#background(high = STDSCR.rows, wide = STDSCR.cols, r = 0, c = 0) ⇒ Object 



124
125
126
127
128
 
# File 'lib/window.rb', line 124

def background(high=STDSCR.rows, wide=STDSCR.cols, r=0, c=0)
  saveback(high, wide, r, c)
  yield
  restback(high, wide, r, c)
end

#beep ⇒ Object 



173
174
175
 
# File 'lib/window.rb', line 173

def beep
  Curses.beep
end

#bottom ⇒ Object

Move cursor to bottom of window



89
90
91
92
93
 
# File 'lib/navigation.rb', line 89

def bottom 
  r, c = rc
  rmax = self.rows - 1
  go rmax, c
end

#boxme ⇒ Object 



155
156
157
158
 
# File 'lib/output.rb', line 155

def boxme
  @outer.box(Vert, Horiz)
  @outer.refresh
end

#center(str) ⇒ Object 



8
9
10
11
12
13
 
# File 'lib/output.rb', line 8

def center(str)
  r, c = self.rc
  n = @cwin.maxx - str.length
  go r, n/2
  self.puts str
end

#clear ⇒ Object 



111
112
113
114
115
116
117
118
 
# File 'lib/output.rb', line 111

def clear
  cwin.setpos(cwin.maxx, cwin.maxy)
  cwin.addstr(' ')
  num = cwin.maxx * cwin.maxy - 1
  cwin.addstr(' '*num)
  cwin.setpos(0, 0)
  cwin.refresh
end

#colorize!(fg, bg) ⇒ Object

Set up a window with fg/bg



69
70
71
72
73
74
75
 
# File 'lib/color.rb', line 69

def colorize!(fg, bg)
  set_colors(fg, bg)
  num = @cwin.maxx * @cwin.maxy
  self.home
  self.go(0, 0) { @cwin.addstr(' '*num) }
  @cwin.refresh
end

#coords(r, c) ⇒ Object

Handle special coordinate names (symbols)



7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
 
# File 'lib/navigation.rb', line 7

def coords(r, c)
  r = case
        when r == :center
          self.rows / 2 
        when r == :top
          0
        when r == :bottom
          self.rows - 1
        else
          r
        end
  c = case
        when c == :center
          self.cols / 2 
        when c == :left
          0
        when c == :right
          self.cols - 1
        else
          c
        end
  [r, c]
end

#crlf ⇒ Object

Technically not output…



85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
 
# File 'lib/output.rb', line 85

def crlf     # Technically not output...
  r, c = rc
  if @scrolling
    if r == @rows - 1  # bottom row
      scroll
      left!
    else
      go r+1, 0
    end
  else
    if r == @rows - 1  # bottom row
      left!
    else
      go r+1, 0
    end
  end
end

#delegate_output(sym, *args) ⇒ Object 



21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
 
# File 'lib/output.rb', line 21

def delegate_output(sym, *args)
  self.cwin.attrset(0)
  args = [""] if args.empty?
  args += ["\n"] if sym == :puts
  set_colors(@fg, @bg)
  meth = sym == :p ? :inspect : :to_s
  args.map! {|x| effect?(x) ? x : x.send(meth) }
  args.each do |arg|  
    if arg.is_a?(RubyText::Effects)
      arg.set(self)
    else
      arg.effect.set(self) if arg.respond_to? :effect
      arg.each_char {|ch| ch == "\n" ? crlf : @cwin.addch(ch) }
      @cwin.refresh
    end
  end
  crlf if sym == :p   # no implicit newline
  set_colors(@fg, @bg)
  @cwin.refresh
end

#down(n = 1) ⇒ Object

Move cursor down



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

def down(n=1)
  r, c = rc
  go r+n, c
end

#down! ⇒ Object

Move cursor to bottom of window



103
104
105
 
# File 'lib/navigation.rb', line 103

def down!
  bottom
end

#effect?(arg) ⇒ Boolean

FIXME Please refactor the Hal out of this.

Returns:

  • (Boolean) 


17
18
19
 
# File 'lib/output.rb', line 17

def effect?(arg)
  arg.is_a?(RubyText::Effects)
end

#flash ⇒ Object 



177
178
179
 
# File 'lib/window.rb', line 177

def flash
  Curses.flash
end

#gets(history: [], limit: nil, tab: [], default: "", capture: []) ⇒ Object 



267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
 
# File 'lib/output.rb', line 267

def gets(history: [], limit: nil, tab: [], default: "", capture: [])
  # needs improvement
  # echo assumed to be OFF, keypad ON
  @history = history
  gs = GetString.new(self, default, history: history, limit: limit, tab: tab, 
                     capture: capture)
  count = 0
  loop do
    count += 1      # Escape and 'capture' chars have special meaning if first char
    ch = self.getch
    case ch
      when *capture 
        return ch if count == 1
        gs.add(ch)
      when Escape
        return Escape if count == 1
        gs.enter
        break
      when CtlD
        return CtlD if count == 1
        gs.enter
        break
      when Enter
        gs.enter
        break
      when BS, DEL, 63   # backspace, del, ^H (huh?)
        gs.backspace
      when Tab
        gs.complete
      when Left
        gs.left_arrow
      when Right
        gs.right_arrow
      when Up
        next if @history.nil?  # move this?
        gs.history_prev
      when Down
        next if @history.nil?  # move this?
        gs.history_next
      when Integer
        Curses.beep
      else
        gs.add(ch)
    end
  end
  gs.value
rescue => err
  str = err.to_s + "\n" + err.backtrace.join("\n")
  raise str
end

#go(r0, c0) ⇒ Object

Go to specified row/column in current window,

execute block, and return cursor



42
43
44
45
46
47
48
49
50
 
# File 'lib/navigation.rb', line 42

def go(r0, c0)
  r, c = coords(r0, c0)
  save = self.rc
  goto r, c 
  if block_given?
    yield 
    goto *save
  end
end

#goto(r, c) ⇒ Object

Go to specified row/column in current window



33
34
35
36
 
# File 'lib/navigation.rb', line 33

def goto(r, c)  # only accepts numbers!
  @cwin.setpos(r, c)
  @cwin.refresh
end

#home ⇒ Object

Move cursor to home (upper left)



124
125
126
 
# File 'lib/navigation.rb', line 124

def home
  go 0, 0
end

#left(n = 1) ⇒ Object

Move cursor left



68
69
70
71
 
# File 'lib/navigation.rb', line 68

def left(n=1)
  r, c = rc
  go r, c-n
end

#left! ⇒ Object

Move cursor to far left of window



109
110
111
112
 
# File 'lib/navigation.rb', line 109

def left!
  r, c = rc
  go r, 0
end

#menu(r: :center, c: :center, items:, curr: 0, border: true, sticky: false, title: nil, fg: Green, bg: Black, wrap: false) ⇒ Object

Simple menu with rows of strings (or Procs)



383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
 
# File 'lib/menu.rb', line 383

def menu(r: :center, c: :center, items:, curr: 0, 
         border: true, sticky: false,
         title: nil, fg: Green, bg: Black, wrap: false)
  RubyText.hide_cursor
  if items.is_a?(Hash)
    results = items.values
    items = items.keys
    hash_flag = true
  else
    results = items
  end
  
  high = items.size
  wide = items.map(&:length).max + 3
  high += 2 if border
  wide += 2 if border

  tlen = title.length + 8 rescue 0
  wide = [wide, tlen].max
  row, col = self.coords(r, c)
  row = row - high/2 if r == :center
  col = col - wide/2 if c == :center
  r, c = row, col
  self.saveback(high, wide, r, c)
  mr, mc = r+self.r0, c+self.c0
  title = nil unless border
  mwin = RubyText.window(high, wide, r: mr, c: mc, border: border,
                         fg: fg, bg: bg, title: title)
  Curses.stdscr.keypad(true)
  sel = curr
  max = items.size - 1
  loop do
    RubyText.hide_cursor  # FIXME should be unnecessary
    items.each.with_index do |item, row|
      mwin.go row, 0
      style = (sel == row) ? :reverse : :normal
      label = (" "*2 + item.to_s + " "*8)[0..wide-1]
      mwin.print fx(label, style)
    end
    ch = getch
    case ch
      when Up
        if sel > 0
          sel -= 1 
        else
          sel = max if wrap  # asteroids mode :)
        end
      when Down, " "  # let space mean down?
        if sel < max
          sel += 1 
        else
          sel = 0 if wrap    # asteroids mode :)
        end
      when Esc
        self.restback(high, wide, r, c)
        RubyText.show_cursor
        return [nil, nil]
      when Enter
        self.restback(high, wide, r, c) unless sticky
        RubyText.show_cursor
        choice = results[sel]
        return [sel, choice] if choice.is_a? String
        result = choice.call
        return [nil, nil] if result.nil? || result.empty?
        return result
      else Curses.beep
    end
    RubyText.show_cursor
  end
end

#multimenu(r: :center, c: :center, items:, curr: 0, selected: [], title: nil, sel_fg: Yellow, fg: White, bg: Blue) ⇒ Object

Menu for multiple selections (buggy/unused?)



456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
 
# File 'lib/menu.rb', line 456

def multimenu(r: :center, c: :center, 
              items:, curr: 0, selected: [],
              title: nil, sel_fg: Yellow, fg: White, bg: Blue)
  RubyText.hide_cursor
  high = items.size + 2
  wide = items.map(&:length).max + 5
  tlen = title.length + 8 rescue 0
  wide = [wide, tlen].max
  row, col = self.coords(r, c)
  row = row - high/2 if r == :center
  col = col - wide/2 if c == :center
  r, c = row, col
  self.saveback(high, wide, r, c)
  mr, mc = r+self.r0, c+self.c0
  mwin = RubyText.window(high, wide, r: mr, c: mc, 
                         fg: fg, bg: bg, title: title)
  Curses.stdscr.keypad(true)
  sel = curr
  max = items.size - 1
  loop do
    RubyText.hide_cursor  # FIXME should be unnecessary
    items.each.with_index do |item, row|
      mwin.go row, 0
      style = (sel == row) ? :reverse : :normal
      color = selected.include?(row) ? sel_fg : fg
      label = (" "*2 + item + " "*8)[0..wide-1]
      mwin.print fx(label, color, style)
    end
    ch = getch
    case ch
      when Up
        sel -= 1 if sel > 0
      when Down
        sel += 1 if sel < max
      when Esc
        self.restback(high, wide, r, c)
        RubyText.show_cursor
        return []
      when Enter
        self.restback(high, wide, r, c)
        RubyText.show_cursor
        return selected.map {|i| items[i] }
      when " "
        selected << sel
        sel += 1 if sel < max
      else Curses.beep
    end
    RubyText.show_cursor
  end
end

#output(&block) ⇒ Object 



120
121
122
123
124
 
# File 'lib/output.rb', line 120

def output(&block)
  $stdscr = self
  block.call
  $stdscr = STDSCR
end

#p(*args) ⇒ Object 



50
51
52
 
# File 'lib/output.rb', line 50

def p(*args)
  delegate_output(:p, *args)
end

#print(*args) ⇒ Object 



46
47
48
 
# File 'lib/output.rb', line 46

def print(*args)
  delegate_output(:print, *args)
end

#putch(ch, r: nil, c: nil, fx: nil) ⇒ Object 



67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
 
# File 'lib/output.rb', line 67

def putch(ch, r: nil, c: nil, fx: nil)
  debug("putch: #{[ch, r, c, fx].inspect}")
  if r.nil? && c.nil? && fx.nil?
    _putch(ch) 
  else
    r0, c0 = self.rc
    r ||= r0
    c ||= c0
    go(r, c) do
      fx.set(self) if fx
      val = fx.value rescue 0
      @cwin.addch(ch.ord|val)
    end
    fx.reset(self) if fx
  end
  @cwin.refresh
end

#puts(*args) ⇒ Object 



42
43
44
 
# File 'lib/output.rb', line 42

def puts(*args)
  delegate_output(:puts, *args)
end

#radio_menu(r: :center, c: :center, items:, curr: 0, border: true, title: nil, fg: Green, bg: Black) ⇒ Object

Menu to choose a single setting and retain it



518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
 
# File 'lib/menu.rb', line 518

def radio_menu(r: :center, c: :center, items:, curr: 0, 
         # Handle current value better?
         border: true,
         title: nil, fg: Green, bg: Black)
  RubyText.hide_cursor
  if items.is_a?(Hash)
    results = items.values
    items = items.keys
    hash_flag = true
  else
    results = items
  end
  
  high = items.size
  wide = items.map(&:length).max + 3
  high += 2 if border
  wide += 2 if border

  tlen = title.length + 8 rescue 0
  wide = [wide, tlen].max
  row, col = self.coords(r, c)
  row = row - high/2 if r == :center
  col = col - wide/2 if c == :center
  r, c = row, col
  self.saveback(high, wide, r, c)
  mr, mc = r+self.r0, c+self.c0
  title = nil unless border
  mwin = RubyText.window(high, wide, r: mr, c: mc, border: border,
                         fg: fg, bg: bg, title: title)
  Curses.stdscr.keypad(true)
  sel = curr
  max = items.size - 1
  loop do
    RubyText.hide_cursor  # FIXME should be unnecessary
    items.each.with_index do |item, row|
      mark = row == curr ? ">" : " "
      mwin.go row, 0
      style = (sel == row) ? :reverse : :normal
      label = "#{mark} #{item}"
      mwin.print fx(label, style)
    end
    ch = getch
    case ch
      when Up
        sel -= 1 if sel > 0
      when Down
        sel += 1 if sel < max
      when Esc
        self.restback(high, wide, r, c)
        RubyText.show_cursor
        return [nil, nil]
      when " "
        mwin[curr, 0] = " "
        mwin[sel, 0] = ">"
        curr = sel
      when Enter
        self.restback(high, wide, r, c)
        RubyText.show_cursor
        choice = results[sel]
        return [sel, choice] if choice.is_a? String
        result = choice.call
        return [nil, nil] if result.nil? || result.empty?
        return result
      else Curses.beep
    end
    RubyText.show_cursor
  end
end

#rc ⇒ Object

Return current row/column



130
131
132
 
# File 'lib/navigation.rb', line 130

def rc
  [@cwin.cury, @cwin.curx]
end

#rcprint(r, c, *args) ⇒ Object 



54
55
56
 
# File 'lib/output.rb', line 54

def rcprint(r, c, *args)
  self.go(r, c) { self.print *args }
end

#rcprint!(r, c, *args) ⇒ Object 



58
59
60
61
 
# File 'lib/output.rb', line 58

def rcprint!(r, c, *args)
  self.go(r, c)  # Cursor isn't restored
  self.print *args
end

#rectmenu(r: :center, c: :center, items:, colrow: [0, 0], border: true, title: nil, fg: Green, bg: Black) ⇒ Object 



123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
 
# File 'lib/menu.rb', line 123

def rectmenu(r: :center, c: :center, items:, colrow: [0, 0], 
             border: true,
             title: nil, fg: Green, bg: Black)
  RubyText.hide_cursor
  maxh, maxw = _rectmenu_maxes(items)
  header, stuff = _rect_hash2array(items, maxh, maxw)
  wide = items.size * maxw
  high = maxh
  high += 2 if border
  wide += 2 if border

  tlen = title.length + 8 rescue 0
  # wide = [wide, tlen].max
  row, col = @win.coords(r, c)
  row = row - high/2 if r == :center
  col = col - wide/2 if c == :center
  r, c = row, col
  @win.saveback(high+1, wide, r, c)
  mr, mc = r+@win.r0, c+@win.c0
  title = nil unless border

  mwin = RubyText.window(high+1, wide, r: mr, c: mc, border: true,
                         fg: fg, bg: bg, title: title)
  header.each {|head| printf "%-#{maxw}s", head }
  puts  # after header
  Curses.stdscr.keypad(true)
  maxcol = items.size - 1
  sizes = items.map {|x| x.size }
  max = sizes.max
  # mwin.go(r, c)
  r += 1   # account for header
  selc, selr = colrow

  loop do
    RubyText.hide_cursor  # FIXME should be unnecessary
    stuff.each.with_index do |column, cix|
      column.each.with_index do |pairs, rix|   # {Jan: ..., Feb: ..., Mar: ..., ...}
        STDSCR.puts "go: #{r}+#{rix}, #{c}+#{cix}*#{maxw}"
        mwin.go(rix+1, cix*maxw)
        style = ([selc, selr] == [cix, rix]) ? :reverse : :normal
        key, val = pairs
        label = key.to_s
#           mwin.print fx(label, style)
        mwin.print label # fx(label, style)
      end
    end
    ch = getch
    case ch
      when Up
        selr -= 1 if selr > 0
      when Down
        selr += 1 if selr < maxh - 1
      when Left
        selc -= 1 if selc > 0
      when Right
        selc += 1 if selc < maxcol
      when Esc
        self.restback(high+1, wide, r-1, c)
        RubyText.show_cursor
        return [nil, nil, nil]
      when Enter
        self.restback(high+1, wide, r-1, c)
        RubyText.show_cursor
        choice = stuff[selc][selr][1]
        case choice
          when String;   return [selc, selr, choice]
          when NilClass; return [nil, nil, nil]
        end
        result = choice.call   # should be a Proc
        return [nil, nil, nil] if result.nil? || result.empty?
        return result
      else Curses.beep
    end
    RubyText.show_cursor
  end
end

#refresh ⇒ Object 



160
161
162
 
# File 'lib/output.rb', line 160

def refresh
  @cwin.refresh
end

#restback(high = STDSCR.rows, wide = STDSCR.cols, r = 0, c = 0) ⇒ Object 



144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
 
# File 'lib/window.rb', line 144

def restback(high=STDSCR.rows, wide=STDSCR.cols, r=0, c=0)
  save = ScreenStack.pop
  pos = save.shift
  0.upto(high-1) do |h|
    line = ""
    0.upto(wide-1) {|w| line << save.shift }
    row, col = h+r-1, c-1
    row += 1 if self == STDSCR   # wtf?
    col += 1 if self == STDSCR
    self.go row, col
    self.print line
  end
  self.go *pos
  @cwin.refresh
rescue => err
  puts "Error!"
  puts err
  puts err.backtrace.join("\n")
  sleep 8
end

#right(n = 1) ⇒ Object

Move cursor right



75
76
77
78
 
# File 'lib/navigation.rb', line 75

def right(n=1)
  r, c = rc
  go r, c+n
end

#right! ⇒ Object

Move cursor to far left of window



116
117
118
119
120
 
# File 'lib/navigation.rb', line 116

def right!
  r, c = rc
  cmax = self.cols - 1
  go r, cmax
end

#saveback(high = STDSCR.rows, wide = STDSCR.cols, r = 0, c = 0) ⇒ Object 



130
131
132
133
134
135
136
137
138
139
140
141
142
 
# File 'lib/window.rb', line 130

def saveback(high=STDSCR.rows, wide=STDSCR.cols, r=0, c=0)
  debug "saveback: #{[high, wide, r, c].inspect}"
  save = [self.rc]
  0.upto(high-1) do |h|
    0.upto(wide-1) do |w|
      row, col = h+r-1, w+c-1
      row += 1 if self == STDSCR   # wtf?
      col += 1 if self == STDSCR
      save << self[row, col]
    end
  end
  ScreenStack.push save
end

#screen_text(file = nil) ⇒ Object

rename?



111
112
113
114
115
116
117
118
119
120
121
122
 
# File 'lib/window.rb', line 111

def screen_text(file = nil)   # rename?
  lines = []
  0.upto(self.rows-1) do |r|
    line = ""
    0.upto(self.cols-1) do |c|
      line << self[r, c]
    end
    lines << line
  end
  File.open(file, "w") {|f| f.puts lines }  if file
  lines
end

#scroll(n = 1) ⇒ Object 



96
97
98
99
100
101
102
103
104
105
106
107
108
109
 
# File 'lib/window.rb', line 96

def scroll(n=1)
  if n < 0
    @cwin.scrl(n)
    (-n).times {|i| rcprint i, 0, (' '*@cols) }
  else
    n.times do |i|
      @cwin.scroll
      scrolling(false)
      rcprint @rows-1, 0, (' '*@cols)
      scrolling
    end
  end
  @cwin.refresh
end

#set_colors(fg, bg) ⇒ Object

Assign color pair to curses window



62
63
64
65
 
# File 'lib/color.rb', line 62

def set_colors(fg, bg)
  cp = RubyText::Color.pair(fg, bg)
  @cwin.color_set(cp)
end

#top ⇒ Object

Move cursor to top of window



82
83
84
85
 
# File 'lib/navigation.rb', line 82

def top
  r, c = rc
  go 0, c
end

#topmenu(items:, curr: 0, fg: Green, bg: Black) ⇒ Object

One-line menu at top of window



321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
 
# File 'lib/menu.rb', line 321

def topmenu(items:, curr: 0, fg: Green, bg: Black)
  r, c, high = 0, 0, 1
  RubyText.hide_cursor
  hash_flag = false
  results = items
  if items.is_a?(Hash)
    results, items = items.values, items.keys
    hash_flag = true
  end

  width = 0   # total width
  cols = []   # start-column of each item
  items.each do |item| 
    cols << width
    iwide = item.to_s.length + 2
    width += iwide
  end

  r, c = self.coords(r, c)
  self.saveback(high, width, r, c)
  mr, mc = r+self.r0, c+self.c0
  mwin = RubyText.window(high, width, r: mr, c: mc, fg: fg, bg: bg, border: false, title: nil)
  Curses.stdscr.keypad(true)
  sel = curr
  max = items.size - 1
  loop do
    items.each.with_index do |item, num|
      item = " #{item} "
      mwin.go 0, cols[num]
      style = (sel == num) ? :reverse : :normal
      mwin.print fx(item, style)
    end
    ch = getch
    case ch
      when Left
        sel -= 1 if sel > 0
      when Right
        sel += 1 if sel < max
      when Esc, " "   # spacebar also quits
        self.restback(high, width, r, c)
        RubyText.show_cursor
        STDSCR.go r, c
        return [nil, nil]
      when Down, Enter
        self.restback(high, width, r, c)
        RubyText.show_cursor
        STDSCR.go r, c
        choice = results[sel]
        return [sel, choice] if choice.is_a? String
        result = choice.call
        return [nil, nil, nil] if result.nil? || result.empty?
#           next if result.nil?
#           next if result.empty?
#           return result
    else Curses.beep
    end
    RubyText.show_cursor
  end
end

#up(n = 1) ⇒ Object

Move cursor up



54
55
56
57
 
# File 'lib/navigation.rb', line 54

def up(n=1)
  r, c = rc
  go r-n, c
end

#up! ⇒ Object

Move cursor to top of window



97
98
99
 
# File 'lib/navigation.rb', line 97

def up!
  top
end

#yesno ⇒ Object

Simple yes/no decision



509
510
511
512
513
514
 
# File 'lib/menu.rb', line 509

def yesno
  # TODO: Accept YyNn
  r, c = STDSCR.rc
  num, str = STDSCR.menu(r: r, c: c+6, items: ["yes", "no"])
  num == 0
end