* ext/tk/lib/tk.rb (_callback_entry_class?): add for checking whether

  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

1 files changed, 40 insertions, 0 deletions

diff --git a/ext/tk/sample/tkextlib/blt/winop1.rb b/ext/tk/sample/tkextlib/blt/winop1.rb
new file mode 100644
index 0000000000..e94138cd94
--- /dev/null
+++ b/ext/tk/sample/tkextlib/blt/winop1.rb
@@ -0,0 +1,40 @@
+#!/usr/bin/env ruby
+require 'tk'
+require 'tkextlib/blt'
+
+file = File.join(File.dirname(File.expand_path(__FILE__)), 
+                 'images', 'sample.gif')
+if File.exist?(file)
+  src = TkPhotoImage.new(:file=>file)
+else
+  fail RuntimeError, 'no image file'
+end
+
+width = src.width
+height = src.height
+
+TkOption.add('*Label.font', '*helvetica*10*')
+TkOption.add('*Label.background', 'white')
+
+l_img0 = TkLabel.new(:image=>src)
+l_hdr0 = TkLabel.new(:text=>"#{width} x #{height}")
+l_ftr0 = TkLabel.new(:text=>'100%')
+Tk.root.background('white')
+
+(2..10).each{|i|
+  iw = width/i
+  ih = height/i
+  r = '%6g'%(100.0/i)
+  dst = TkPhotoImage.new(:width=>iw, :height=>ih)
+  Tk::BLT::Winop.image_resample(src, dst, :sinc)
+  l_hdr = TkLabel.new(:text=>"#{iw} x #{ih}")
+  l_ftr = TkLabel.new(:text=>"#{r}%")
+  l_img = TkLabel.new(:image=>dst)
+  Tk::BLT::Table.add(Tk.root, 
+                     [0,i], l_hdr, 
+                     [1,i], l_img, 
+                     [2,i], l_ftr)
+  Tk.update
+}
+
+Tk.mainloop