1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
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
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
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
|
# puzzle.rb
#
# This demonstration script creates a 15-puzzle game using a collection
# of buttons.
#
# widet demo 'puzzle' (called by 'widget')
#
# toplevel widget
if defined?($puzzle_demo) && $puzzle_demo
$puzzle_demo.destroy
$puzzle_demo = nil
end
# demo toplevel widget
$puzzle_demo = TkToplevel.new {|w|
title("15-Puzzle Demonstration")
iconname("15-Puzzle")
positionWindow(w)
}
base_frame = TkFrame.new($puzzle_demo).pack(:fill=>:both, :expand=>true)
# label
msg = TkLabel.new(base_frame) {
font $font
wraplength '4i'
justify 'left'
text "A 15-puzzle appears below as a collection of buttons. Click on any of the pieces next to the space, and that piece will slide over the space. Continue this until the pieces are arranged in numerical order from upper-left to lower-right."
}
msg.pack('side'=>'top')
# frame
TkFrame.new(base_frame) {|frame|
TkButton.new(frame) {
text 'Dismiss'
command proc{
tmppath = $puzzle_demo
$puzzle_demo = nil
tmppath.destroy
}
}.pack('side'=>'left', 'expand'=>'yes')
TkButton.new(frame) {
text 'Show Code'
command proc{showCode 'puzzle'}
}.pack('side'=>'left', 'expand'=>'yes')
}.pack('side'=>'bottom', 'fill'=>'x', 'pady'=>'2m')
# frame
# Special trick: select a darker color for the space by creating a
# scrollbar widget and using its trough color.
begin
if Tk.windowingsystem() == 'aqua'
frameWidth = 168
frameHeight = 168
elsif Tk.default_widget_set == :Ttk
frameWidth = 148
frameHeight = 124
else
frameWidth = 120
frameHeight = 120
end
rescue
frameWidth = 120
frameHeight = 120
end
# depend_on_button_width = true
depend_on_button_width = false
s = TkScrollbar.new(base_frame)
base = TkFrame.new(base_frame) {
width frameWidth
height frameHeight
borderwidth 2
relief 'sunken'
bg s['troughcolor']
}
s.destroy
base.pack('side'=>'top', 'padx'=>'1c', 'pady'=>'1c')
def def_puzzleswitch_proc(w, num)
proc{puzzleSwitch w, num}
end
$xpos = {}
$ypos = {}
order = [3,1,6,2,5,7,15,13,4,11,8,9,14,10,12]
(0..14).each{|i|
num = order[i]
$xpos[num] = (i % 4) * 0.25
$ypos[num] = (i / 4) * 0.25
TkButton.new(base) {|w|
relief 'raised'
text num
highlightthickness 0
command def_puzzleswitch_proc(w, num)
if depend_on_button_width && (w.winfo_reqwidth * 4 > base.width)
base.width = w.winfo_reqwidth * 4
end
}.place('relx'=>$xpos[num], 'rely'=>$ypos[num],
'relwidth'=>0.25, 'relheight'=>0.25)
}
$xpos['space'] = 0.75
$ypos['space'] = 0.75
# puzzleSwitch --
# This procedure is invoked when the user clicks on a particular button;
# if the button is next to the empty space, it moves the button into the
# empty space.
def puzzleSwitch(w, num)
if ( ($ypos[num] >= ($ypos['space'] - 0.01)) \
&& ($ypos[num] <= ($ypos['space'] + 0.01)) \
&& ($xpos[num] >= ($xpos['space'] - 0.26)) \
&& ($xpos[num] <= ($xpos['space'] + 0.26))) \
|| (($xpos[num] >= ($xpos['space'] - 0.01)) \
&& ($xpos[num] <= ($xpos['space'] + 0.01)) \
&& ($ypos[num] >= ($ypos['space'] - 0.26)) \
&& ($ypos[num] <= ($ypos['space'] + 0.26)))
tmp = $xpos['space']
$xpos['space'] = $xpos[num]
$xpos[num] = tmp
tmp = $ypos['space']
$ypos['space'] = $ypos[num]
$ypos[num] = tmp
w.place('relx'=>$xpos[num], 'rely'=>$ypos[num])
end
end
|
