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author | Jari Vetoniemi <jari.vetoniemi@indooratlas.com> | 2020-03-16 18:49:26 +0900 |
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committer | Jari Vetoniemi <jari.vetoniemi@indooratlas.com> | 2020-03-30 00:39:06 +0900 |
commit | fcbf63e62c627deae76c1b8cb8c0876c536ed811 (patch) | |
tree | 64cb17de3f41a2b6fef2368028fbd00349946994 /jni/ruby/ext/tk/sample/tkextlib/blt/winop1.rb |
Fresh start
Diffstat (limited to 'jni/ruby/ext/tk/sample/tkextlib/blt/winop1.rb')
-rw-r--r-- | jni/ruby/ext/tk/sample/tkextlib/blt/winop1.rb | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/jni/ruby/ext/tk/sample/tkextlib/blt/winop1.rb b/jni/ruby/ext/tk/sample/tkextlib/blt/winop1.rb new file mode 100644 index 0000000..97c31aa --- /dev/null +++ b/jni/ruby/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 |