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/demos-en/mclist.rb | 117 ++++++++++++++++++++++++++++++
 1 file changed, 117 insertions(+)
 create mode 100644 jni/ruby/ext/tk/sample/demos-en/mclist.rb

(limited to 'jni/ruby/ext/tk/sample/demos-en/mclist.rb')

diff --git a/jni/ruby/ext/tk/sample/demos-en/mclist.rb b/jni/ruby/ext/tk/sample/demos-en/mclist.rb
new file mode 100644
index 0000000..17019bb
--- /dev/null
+++ b/jni/ruby/ext/tk/sample/demos-en/mclist.rb
@@ -0,0 +1,117 @@
+# mclist.rb --
+#
+# This demonstration script creates a toplevel window containing a Ttk
+# tree widget configured as a multi-column listbox.
+#
+# based on "Id: mclist.tcl,v 1.3 2007/12/13 15:27:07 dgp Exp"
+
+if defined?($mclist_demo) && $mclist_demo
+  $mclist_demo.destroy
+  $mclist_demo = nil
+end
+
+$mclist_demo = TkToplevel.new {|w|
+  title("Multi-Column List")
+  iconname("mclist")
+  positionWindow(w)
+}
+
+base_frame = TkFrame.new($mclist_demo).pack(:fill=>:both, :expand=>true)
+
+## Explanatory text
+Ttk::Label.new(base_frame, :font=>$font, :wraplength=>'4i',
+               :justify=>:left, :anchor=>'n', :padding=>[10, 2, 10, 6],
+               :text=><<EOL).pack(:fill=>:x)
+Ttk is the new Tk themed widget set. \
+One of the widgets it includes is a tree widget, \
+which can be configured to display multiple columns of informational data \
+without displaying the tree itself. \
+This is a simple way to build a listbox that has multiple columns. \
+Clicking on the heading for a column will sort the data by that column. \
+You can also change the width of the columns \
+by dragging the boundary between them.
+EOL
+
+## See Code / Dismiss
+Ttk::Frame.new(base_frame) {|frame|
+  sep = Ttk::Separator.new(frame)
+  Tk.grid(sep, :columnspan=>4, :row=>0, :sticky=>'ew', :pady=>2)
+  TkGrid('x',
+         Ttk::Button.new(frame, :text=>'See Code',
+                         :image=>$image['view'], :compound=>:left,
+                         :command=>proc{showCode 'mclist'}),
+         Ttk::Button.new(frame, :text=>'Dismiss',
+                         :image=>$image['delete'], :compound=>:left,
+                         :command=>proc{
+                           $mclist_demo.destroy
+                           $mclist_demo = nil
+                         }),
+         :padx=>4, :pady=>4)
+  grid_columnconfigure(0, :weight=>1)
+  pack(:side=>:bottom, :fill=>:x)
+}
+
+container = Ttk::Frame.new(base_frame)
+tree = Ttk::Treeview.new(base_frame, :columns=>%w(country capital currency),
+                          :show=>:headings)
+if Tk.windowingsystem != 'aqua'
+  vsb = tree.yscrollbar(Ttk::Scrollbar.new(base_frame))
+  hsb = tree.xscrollbar(Ttk::Scrollbar.new(base_frame))
+else
+  vsb = tree.yscrollbar(Tk::Scrollbar.new(base_frame))
+  hsb = tree.xscrollbar(Tk::Scrollbar.new(base_frame))
+end
+
+container.pack(:fill=>:both, :expand=>true)
+Tk.grid(tree, vsb, :in=>container, :sticky=>'nsew')
+Tk.grid(hsb,       :in=>container, :sticky=>'nsew')
+container.grid_columnconfigure(0, :weight=>1)
+container.grid_rowconfigure(0, :weight=>1)
+
+## The data we're going to insert
+data = [
+  ['Argentina', 	'Buenos Aires', 	'ARS'],
+  ['Australia',		'Canberra',		'AUD'],
+  ['Brazil', 		'Brazilia', 		'BRL'],
+  ['Canada', 		'Ottawa', 		'CAD'],
+  ['China',		'Beijing', 		'CNY'],
+  ['France',		'Paris', 		'EUR'],
+  ['Germany', 		'Berlin',		'EUR'],
+  ['India', 		'New Delhi',		'INR'],
+  ['Italy', 		'Rome', 		'EUR'],
+  ['Japan', 		'Tokyo', 		'JPY'],
+  ['Mexico', 		'Mexico City', 		'MXN'],
+  ['Russia', 		'Moscow', 		'RUB'],
+  ['South Africa',	'Pretoria', 		'ZAR'],
+  ['United Kingdom', 	'London', 		'GBP'],
+  ['United States', 	'Washington, D.C.', 	'USD'],
+]
+
+## Code to insert the data nicely
+font = Ttk::Style.lookup(tree[:style], :font)
+cols = %w(country capital currency)
+cols.zip(%w(Country Capital Currency)).each{|col, name|
+  tree.heading_configure(col, :text=>name,
+                         :command=>proc{sort_by(tree, col, false)})
+  tree.column_configure(col, :width=>TkFont.measure(font, name))
+}
+
+data.each{|country, capital, currency|
+  #tree.insert('', :end, :values=>[country, capital, currency])
+  tree.insert(nil, :end, :values=>[country, capital, currency])
+  cols.zip([country, capital, currency]).each{|col, val|
+    len = TkFont.measure(font, "#{val}  ")
+    if tree.column_cget(col, :width) < len
+      tree.column_configure(col, :width=>len)
+    end
+  }
+}
+
+## Code to do the sorting of the tree contents when clicked on
+def sort_by(tree, col, direction)
+  tree.children(nil).map!{|row| [tree.get(row, col), row.id]} .
+    sort(&((direction)? proc{|x, y| y <=> x}: proc{|x, y| x <=> y})) .
+    each_with_index{|info, idx| tree.move(info[1], nil, idx)}
+
+  tree.heading_configure(col, :command=>proc{sort_by(tree, col, ! direction)})
+end
-- 
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