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41b74c6e20
* ext/tk/*: Support new features of Tcl/Tk8.6b1 and minor bug fixes.
( [KNOWN BUG] Ruby/Tk on Ruby 1.9 will not work on Cygwin. )
* ext/tk/*: Unify sources between Ruby 1.8 & 1.9.
Improve default_widget_set handling.
* ext/tk/*: Multi-TkInterpreter (multi-tk.rb) works on Ruby 1.8 & 1.9.
( [KNOWN BUG] On Ruby 1.8, join to a long term Thread on Tk
callbacks may freeze. On Ruby 1.9, cannot create a second
master interpreter (creating slaves are OK); supported master
interpreter is the default master interpreter only. )
* ext/tk/lib/tkextlib/*: Update supported versions of Tk extensions.
Tcllib 1.8/Tklib 0.4.1 ==> Tcllib 1.11.1/Tklib 0.5
BWidgets 1.7 ==> BWidgets 1.8
TkTable 2.9 ==> TkTable 2.10
TkTreeCtrl 2005-12-02 ==> TkTreeCtrl 2.2.9
Tile 0.8.0/8.5.1 ==> Tile 0.8.3/8.6b1
IncrTcl 2005-02-14 ==> IncrTcl 2008-12-15
TclX 2005-02-07 ==> TclX 2008-12-15
Trofs 0.4.3 ==> Trofs 0.4.4
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@24064 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
45 lines
1.5 KiB
Ruby
45 lines
1.5 KiB
Ruby
#!/usr/bin/env ruby
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require "tk"
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TkMessage.new(:width=>360, :text=><<EOM).pack
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This sample shows how to use a binary sequence between Ruby and Tk. \
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This reads the image data from the file as the binary sequence.
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To treat the difference of encodings between on Ruby and on Tk seamlessly, \
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Ruby/Tk converts the encoding of string arguments automatically. \
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I think it is comfortable for users on almost all situations. \
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However, when treats a binary sequence, the convert process makes troubles.
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Tk::BinaryString class (subclass of Tk::EncodedString class) is the class \
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to avoid such troubles. Please see the source code of this sample. \
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A Tk::BinaryString instance is used to create the image for the center button.
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EOM
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ImgFile=[File.dirname(__FILE__), 'images','tcllogo.gif'].join(File::Separator)
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ph1 = TkPhotoImage.new(:file=>ImgFile)
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p ph1.configinfo
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b_str = Tk::BinaryString(IO.read(ImgFile))
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p [b_str, b_str.encoding]
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ph2 = TkPhotoImage.new(:data=>b_str)
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p ph2.configinfo
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p ph2.data(:grayscale=>true)
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ph3 = TkPhotoImage.new(:palette=>256)
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ph3.put(ph2.data)
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ph4 = TkPhotoImage.new()
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ph4.put(ph2.data(:grayscale=>true))
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#p [b_str.encoding, b_str.rb_encoding]
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f = TkFrame.new.pack
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TkButton.new(:parent=>f, :image=>ph1, :command=>proc{exit}).pack(:side=>:left)
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TkButton.new(:parent=>f, :image=>ph2, :command=>proc{exit}).pack(:side=>:left)
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TkButton.new(:parent=>f, :image=>ph3, :command=>proc{exit}).pack(:side=>:left)
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TkButton.new(:parent=>f, :image=>ph4, :command=>proc{exit}).pack(:side=>:left)
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Tk.mainloop
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