1# unicodeout.rb --
2#
3# This demonstration script shows how you can produce output (in label
4# widgets) using many different alphabets.
5#
6# based on Tcl/Tk8.4.4 widget demos
7
8if defined?($unicodeout_demo) && $unicodeout_demo
9  $unicodeout_demo.destroy
10  $unicodeout_demo = nil
11end
12
13$unicodeout_demo = TkToplevel.new {|w|
14  title("Unicode Label Demonstration")
15  iconname("unicodeout")
16  positionWindow(w)
17}
18
19base_frame = TkFrame.new($unicodeout_demo).pack(:fill=>:both, :expand=>true)
20
21TkLabel.new(base_frame,
22            :font=>$font, :wraplength=>'5.4i', :justify=>:left,
23            :text=><<EOL).pack(:side=>:top)
24This is a sample of Tk's support for languages that use non-Western \
25character sets.  However, what you will actually see below depends \
26largely on what character sets you have installed, and what you see \
27for characters that are not present varies greatly between platforms as well. \
28Please try to click the 'See Code' button, \
29and click the 'Rerun Demo' button after editing \
30(the source file is not changed) \
31the definition of @@font on the Unicodeout_SampleFrame class.
32The strings are written in Tcl using UNICODE characters \
33using the \\uXXXX escape so as to do so in a portable fashion.
34
35ATTENTION:
36The strings are converted to the encoded string objects \
37(completed to rewrite Tcl's escapes) by Tk::UTF8_String method. \
38And the Tk::UTF8_String objects are passed to the label widgets.
39EOL
40
41TkFrame.new(base_frame){|f|
42  pack(:side=>:bottom, :fill=>:x, :pady=>'2m')
43
44  TkButton.new(f, :text=>'Dismiss', :width=>15, :command=>proc{
45                 $unicodeout_demo.destroy
46                 $unicodeout_demo = nil
47               }).pack(:side=>:left, :expand=>true)
48
49  TkButton.new(f, :text=>'See Code', :width=>15, :command=>proc{
50                 showCode 'unicodeout'
51               }).pack(:side=>:left, :expand=>true)
52}
53
54wait_msg = TkLabel.new(base_frame,
55                       :text=>"Please wait while loading fonts...",
56                       :font=>"Helvetica 12 italic").pack
57
58class Unicodeout_SampleFrame < TkFrame
59  @@font = $font
60  # @@font = 'Helvetica 14'
61  # @@font = 'Courier 12'
62  # @@font = 'clearlyu 16'
63  # @@font = 'fixed 12'
64  # @@font = 'Times 12'
65  # @@font = 'Newspaper 12'
66  # @@font = '{New century schoolbook} 12'
67
68  def initialize(base)
69    super(base)
70    grid_columnconfig(1, :weight=>1)
71  end
72
73  def add_sample(lang, *args)
74    sample_txt = Tk::UTF8_String(args.join(''))
75    l = TkLabel.new(self, :font=>@@font, :text=>lang+':',
76                    :anchor=>:nw, :pady=>0)
77    #s = TkLabel.new(self, :font=>@@font, :text=>sample_txt,
78    s = TkLabel.new(self, :font=>TkFont.new(@@font), :text=>sample_txt,
79                    :anchor=>:nw, :width=>30, :pady=>0)
80    Tk.grid(l, s, :sticky=>:ew, :pady=>0)
81    l.grid_config(:padx, '1m')
82  end
83end
84f = Unicodeout_SampleFrame.new(base_frame)
85f.pack(:expand=>true, :fill=>:both, :padx=>'2m', :pady=>'1m')
86
87# Processing when some characters are missing might take a while, so make
88# sure we're displaying something in the meantime...
89
90oldCursor = $unicodeout_demo.cursor
91$unicodeout_demo.cursor('watch')
92Tk.update
93
94f.add_sample('Arabic',
95             '\uFE94\uFEF4\uFE91\uFEAE\uFECC\uFEDF\uFE8D\uFE94',
96             '\uFEE4\uFEE0\uFEDC\uFEDF\uFE8D')
97f.add_sample('Trad. Chinese', '\u4E2D\u570B\u7684\u6F22\u5B57')
98f.add_sample('Simpl. Chinese', '\u6C49\u8BED')
99f.add_sample('Greek',
100             '\u0395\u03BB\u03BB\u03B7\u03BD\u03B9\u03BA\u03AE ',
101             '\u03B3\u03BB\u03CE\u03C3\u03C3\u03B1')
102f.add_sample('Hebrew',
103             '\u05DD\u05D9\u05DC\u05E9\u05D5\u05E8\u05D9 ',
104             '\u05DC\u05D9\u05D0\u05E8\u05E9\u05D9')
105f.add_sample('Japanese',
106             '\u65E5\u672C\u8A9E\u306E\u3072\u3089\u304C\u306A, ',
107             '\u6F22\u5B57\u3068\u30AB\u30BF\u30AB\u30CA')
108f.add_sample('Korean', '\uB300\uD55C\uBBFC\uAD6D\uC758 \uD55C\uAE00')
109f.add_sample('Russian',
110             '\u0420\u0443\u0441\u0441\u043A\u0438\u0439 ',
111             '\u044F\u0437\u044B\u043A')
112
113wait_msg.destroy
114$unicodeout_demo.cursor(oldCursor)
115