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/tkHTML/hv.rb | 313 +++++++++++++++++++++++++++
 1 file changed, 313 insertions(+)
 create mode 100644 jni/ruby/ext/tk/sample/tkextlib/tkHTML/hv.rb

(limited to 'jni/ruby/ext/tk/sample/tkextlib/tkHTML/hv.rb')

diff --git a/jni/ruby/ext/tk/sample/tkextlib/tkHTML/hv.rb b/jni/ruby/ext/tk/sample/tkextlib/tkHTML/hv.rb
new file mode 100644
index 0000000..920eb15
--- /dev/null
+++ b/jni/ruby/ext/tk/sample/tkextlib/tkHTML/hv.rb
@@ -0,0 +1,313 @@
+#!/usr/bin/env ruby
+#
+# This script implements the "hv" application.  Type "hv FILE" to
+# view FILE as HTML.
+#
+# This application is used for testing the HTML widget.  It can
+# also server as an example of how to use the HTML widget.
+#
+require 'tk'
+require 'tkextlib/tkHTML'
+
+root = TkRoot.new(:title=>'HTML File Viewer', :iconname=>'HV')
+
+file = ARGV[0]
+
+#
+# These images are used in place of GIFs or of form elements
+#
+biggray = TkPhotoImage.new(:data=><<'EOD')
+    R0lGODdhPAA+APAAALi4uAAAACwAAAAAPAA+AAACQISPqcvtD6OctNqLs968+w+G4kiW5omm
+    6sq27gvH8kzX9o3n+s73/g8MCofEovGITCqXzKbzCY1Kp9Sq9YrNFgsAO///
+EOD
+
+smgray = TkPhotoImage.new(:data=><<'EOD')
+    R0lGODdhOAAYAPAAALi4uAAAACwAAAAAOAAYAAACI4SPqcvtD6OctNqLs968+w+G4kiW5omm
+    6sq27gvH8kzX9m0VADv/
+EOD
+
+nogifbig = TkPhotoImage.new(:data=><<'EOD')
+    R0lGODdhJAAkAPEAAACQkADQ0PgAAAAAACwAAAAAJAAkAAACmISPqcsQD6OcdJqKM71PeK15
+    AsSJH0iZY1CqqKSurfsGsex08XuTuU7L9HywHWZILAaVJssvgoREk5PolFo1XrHZ29IZ8oo0
+    HKEYVDYbyc/jFhz2otvdcyZdF68qeKh2DZd3AtS0QWcDSDgWKJXY+MXS9qY4+JA2+Vho+YPp
+    FzSjiTIEWslDQ1rDhPOY2sXVOgeb2kBbu1AAADv/
+EOD
+
+nogifsm = TkPhotoImage.new(:data=><<'EOD')
+    R0lGODdhEAAQAPEAAACQkADQ0PgAAAAAACwAAAAAEAAQAAACNISPacHtD4IQz80QJ60as25d
+    3idKZdR0IIOm2ta0Lhw/Lz2S1JqvK8ozbTKlEIVYceWSjwIAO///
+EOD
+
+#
+# define variables
+#
+ul_hyper = TkVariable.new(0)
+show_tbl = TkVariable.new(0)
+show_img = TkVariable.new(1)
+
+#
+# A font chooser routine.
+#
+# html[:fontcommand] = pick_font
+pick_font = proc{|size, attrs|
+  puts "FontCmd: #{size} #{attrs}"
+  [ ((attrs =~ /fixed/)? 'courier': 'charter'),
+    (12 * (1.2**(size.to_f - 4.0))).to_i,
+    ((attrs =~ /italic/)? 'italic': 'roman'),
+    ((attrs =~ /bold/)? 'bold': 'normal') ].join(' ')
+}
+
+#
+# This routine is called for each form element
+#
+form_cmd = proc{|n, cmd, style, *args|
+  # puts "FormCmd: $n $cmd $args"
+  case cmd
+  when 'select', 'textarea', 'input'
+    TkLabel.new(:widgetname=>args[0], :image=>nogifsm)
+  end
+}
+
+#
+# This routine is called for every <IMG> markup
+#
+images   = {}
+old_imgs = {}
+big_imgs = {}
+
+hotkey   = {}
+
+move_big_image = proc{|b|
+  if big_imgs.key?(b)
+    b.copy(big_imgs[b])
+    big_imgs[b].delete
+    big_imgs.delete(b)
+    Tk.update
+  end
+}
+
+image_cmd = proc{|*args|
+  if show_img.bool
+    smgray
+  else
+    fn = args[0]
+
+    if old_imgs.key?(fn)
+      images[fn] = old_imgs[fn]
+      old_imgs.delete(fn)
+      images[fn]
+
+    else
+      begin
+        img = TkPhotoImage.new(:file=>fn)
+      rescue
+        smgray
+      else
+        if img.width * img.height > 20000
+          b = TkPhotoImage.new(:width=>img.width, :height=>img.height)
+          big_imgs[b] = img
+          img = b
+          Tk.after_idle(proc{ move_big_image.call(b) })
+        end
+
+        images[fn] = img
+        img
+      end
+    end
+  end
+}
+
+#
+# This routine is called for every <SCRIPT> markup
+#
+script_cmd = proc{|*args|
+  # puts "ScriptCmd: #{args.inspect}"
+}
+
+# This routine is called for every <APPLET> markup
+#
+applet_cmd = proc{|w, arglist|
+  # puts "AppletCmd: w=#{w} arglist=#{arglist}"
+  TkLabel.new(w, :text=>"The Applet #{w}", :bd=>2, :relief=>raised)
+}
+
+#
+# Construct the main HTML viewer
+#
+html = Tk::HTML_Widget.new(:padx=>5, :pady=>9,
+                           :formcommand=>form_cmd,
+                           :imagecommand=>image_cmd,
+                           :scriptcommand=>script_cmd,
+                           :appletcommand=>applet_cmd,
+                           :underlinehyperlinks=>0,
+                           :bg=>'white', :tablerelief=>:raised)
+vscr = html.yscrollbar(TkScrollbar.new)
+hscr = html.xscrollbar(TkScrollbar.new)
+
+Tk.grid(html, vscr, :sticky=>:news)
+Tk.grid(hscr,       :sticky=>:ew)
+Tk.root.grid_columnconfigure(0, :weight=>1)
+Tk.root.grid_columnconfigure(1, :weight=>0)
+Tk.root.grid_rowconfigure(0, :weight=>1)
+Tk.root.grid_rowconfigure(1, :weight=>0)
+
+#
+# This procedure is called when the user clicks on a hyperlink.
+#
+priv = {}
+last_file = ''
+
+# Read a file
+#
+read_file = proc{|name|
+  begin
+    fp = open(name, 'r')
+    ret = fp.read(File.size(name))
+  rescue
+    ret = nil
+    fp = nil
+    Tk.messageBox(:icon=>'error', :message=>"fail to open '#{name}'",
+                  :type=>:ok)
+  ensure
+    fp.close if fp
+  end
+  ret
+}
+
+# Clear the screen.
+#
+clear_screen = proc{
+  html.clear
+  old_imgs.clear
+  big_imgs.clear
+  hotkey.clear
+  images.each{|k, v| old_imgs[k] = v }
+  images.clear
+}
+
+# Load a file into the HTML widget
+#
+load_file = proc{|name|
+  if (doc = read_file.call(name))
+    clear_screen.call
+    last_file = name
+    html.configure(:base=>name)
+    html.parse(doc)
+    old_imgs.clear
+  end
+}
+
+href_binding = proc{|x, y|
+  # koba & dg marking text
+  html.selection_clear
+  priv['mark'] = "@#{x},#{y}"
+  lst = html.href(x, y)
+
+  unless lst.size.zero?
+    lnk, target = lst
+
+    if lnk != ""
+      if lnk =~ /^#{last_file}#(.*)$/
+        html.yview($1)
+      else
+        load_file.call(lnk)
+      end
+    end
+  end
+}
+html.clipping_window.bind('1', href_binding, '%x %y')
+
+# marking text with the mouse and copying to the clipboard just with tkhtml2.0 working
+html.clipping_window.bind('B1-Motion', proc{|w, x, y|
+                            w.selection_set(priv['mark'], "@#{x},#{y}")
+                            TkClipboard.clear
+                            # avoid tkhtml0.0 errors
+                            # anyone can fix this for tkhtml0.0
+                            begin
+                              TkClipboard.append(TkSelection.get)
+                            rescue
+                            end
+                          }, '%W %x %y')
+
+# This procedure is called when the user selects the File/Open
+# menu option.
+#
+last_dir = Dir.pwd
+sel_load = proc{
+  filetypes = [
+    ['Html Files', ['.html', '.htm']],
+    ['All Files', '*']
+  ]
+
+  f = Tk.getOpenFile(:initialdir=>last_dir, :filetypes=>filetypes)
+  if f != ''
+    load_file.call(f)
+    last_dir = File.dirname(f)
+  end
+}
+
+# Refresh the current file.
+#
+refresh = proc{|*args|
+  load_file.call(last_file)
+}
+
+# This binding changes the cursor when the mouse move over
+# top of a hyperlink.
+#
+Tk::HTML_Widget::ClippingWindow.bind('Motion', proc{|w, x, y|
+                                       parent = w.winfo_parent
+                                       url = parent.href(x, y)
+                                       unless url.empty?
+                                         parent[:cursor] = 'hand2'
+                                       else
+                                         parent[:cursor] = ''
+                                       end
+                                     }, '%W %x %y')
+#
+# Setup menu
+#
+menu_spec = [
+  [['File', 0],
+    ['Open',    sel_load, 0],
+    ['Refresh', refresh,   0],
+    '---',
+    ['Exit', proc{exit}, 1]],
+
+  [['View', 0],
+    ['Underline Hyperlinks', ul_hyper],
+    ['Show Table Structure', show_tbl],
+    ['Show Images',          show_img]]
+]
+
+mbar = Tk.root.add_menubar(menu_spec)
+
+#
+# Setup trace
+#
+ul_hyper.trace('w', proc{
+                 html[:underlinehyperlinks] = ul_hyper.value
+                 refresh.call
+               })
+
+show_tbl.trace('w', proc{
+                 if show_tbl.bool
+                   html[:tablerelief] = :flat
+                 else
+                   html[:tablerelief] = :raised
+                 end
+                 refresh.call
+               })
+
+show_img.trace('w', refresh)
+
+# If an arguent was specified, read it into the HTML widget.
+#
+Tk.update
+if file && file != ""
+  load_file.call(file)
+end
+
+#####################################
+
+Tk.mainloop
-- 
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