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334325f72a
a class is available for a callback entry. * ext/tk/lib/tk.rb (after_cancel): add Tk.after_cancel(afterID) method. * ext/tk/lib/tk.rb (array2tk_list): change from private module method of TkComm to public module method. * ext/tk/lib/tk.rb (cget): add check that slot argument is not empty string. * ext/tk/lib/tk.rb (configinfo): ditto. * ext/tk/lib/tk/itemconfig.rb (itemcget): add check that slot argument is not empty string. * ext/tk/lib/tk/itemconfig.rb (itemconfiginfo): ditto. * ext/tk/lib/tk/entry.rb: add TkEntry#icursor and icursor= (alias of cursor and cursor= method). * ext/tk/lib/tk/font.rb: improve font treatment when the font name is empty string. * ext/tk/lib/tk/variable.rb: add :variable, :window and :procedure type. * ext/tk/lib/tk/variable.rb: improve treatment of array-type tkvariable. * ext/tk/lib/tkextlib/blt.rb: add commands for zooming. * ext/tk/lib/tkextlib/blt/*: bug fix. * ext/tk/lib/tkextlib/treectrl/tktreectrl.rb: bug fix and add methods to call TreeCtrl commands for bindings. * ext/tk/sample/tkextlib/blt/*: new sample scritps. * ext/tk/sample/tkextlib/treectrl/*: ditto. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@8195 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
40 lines
997 B
Ruby
40 lines
997 B
Ruby
#!/usr/bin/env ruby
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require 'tk'
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require 'tkextlib/blt'
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file = File.join(File.dirname(File.expand_path(__FILE__)),
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'images', 'sample.gif')
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if File.exist?(file)
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src = TkPhotoImage.new(:file=>file)
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else
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fail RuntimeError, 'no image file'
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end
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width = src.width
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height = src.height
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TkOption.add('*Label.font', '*helvetica*10*')
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TkOption.add('*Label.background', 'white')
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l_img0 = TkLabel.new(:image=>src)
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l_hdr0 = TkLabel.new(:text=>"#{width} x #{height}")
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l_ftr0 = TkLabel.new(:text=>'100%')
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Tk.root.background('white')
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(2..10).each{|i|
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iw = width/i
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ih = height/i
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r = '%6g'%(100.0/i)
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dst = TkPhotoImage.new(:width=>iw, :height=>ih)
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Tk::BLT::Winop.image_resample(src, dst, :sinc)
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l_hdr = TkLabel.new(:text=>"#{iw} x #{ih}")
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l_ftr = TkLabel.new(:text=>"#{r}%")
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l_img = TkLabel.new(:image=>dst)
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Tk::BLT::Table.add(Tk.root,
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[0,i], l_hdr,
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[1,i], l_img,
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[2,i], l_ftr)
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Tk.update
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}
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Tk.mainloop
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