From fcbf63e62c627deae76c1b8cb8c0876c536ed811 Mon Sep 17 00:00:00 2001
From: Jari Vetoniemi <jari.vetoniemi@indooratlas.com>
Date: Mon, 16 Mar 2020 18:49:26 +0900
Subject: Fresh start

---
 jni/ruby/ext/tk/sample/tkextlib/blt/winop1.rb | 40 +++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 jni/ruby/ext/tk/sample/tkextlib/blt/winop1.rb

(limited to 'jni/ruby/ext/tk/sample/tkextlib/blt/winop1.rb')

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
-- 
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