* ext/tk/lib/tkextlib/blt.rb: add BLT extension support

* ext/tk/lib/tkextlib/blt/*.rb: ditto
* ext/tk/lib/tkextlib/blt/tile/*.rb: ditto


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@7645 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ext/tk/lib/tkextlib/blt/htext.rb

@@ -0,0 +1,100 @@
+#
+#  tkextlib/blt/htext.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tk/itemconfig.rb'
+require 'tkextlib/blt.rb'
+
+module Tk::BLT
+  class Htext<TkWindow
+    include TkItemConfigMethod
+    include Scrollable
+
+    TkCommandNames = ['::blt::htext'.freeze].freeze
+    WidgetClassName = 'Htext'.freeze
+    WidgetClassNames[WidgetClassName] = self
+
+    alias window_cget itemcget
+    alias window_configure itemconfigure
+    alias window_configuinfo itemconfiginfo
+    alias current_window_configuinfo current_itemconfiginfo
+
+    def append(win, keys={})
+      tk_send('append', _epath(win), keys)
+      self
+    end
+
+    def goto_line(idx)
+      tk_send_without_enc('gotoline', idx)
+      self
+    end
+    def current_line
+      number(tk_send_without_enc('gotoline'))
+    end
+
+    def index(str)
+      number(tk_send('index', str))
+    end
+
+    def line_pos(str)
+      tk_send('linepos', str)
+    end
+
+    def range(from=None, to=None)
+      tk_send_without_enc('range', from, to)
+    end
+
+    def scan_mark(pos)
+      tk_send_without_enc('scan', 'mark', pos)
+      self
+    end
+
+    def scan_dragto(pos)
+      tk_send_without_enc('scan', 'dragto', pos)
+      self
+    end
+
+    def search(pat, from=None, to=None)
+      num = number(tk_send('search', pat, from, to))
+      (num < 0)? nil: num
+    end
+
+    def selection_adjust(index)
+      tk_send_without_enc('selection', 'adjust', index)
+      self
+    end
+    def selection_clear()
+      tk_send_without_enc('selection', 'clear')
+      self
+    end
+    def selection_from(index)
+      tk_send_without_enc('selection', 'from', index)
+      self
+    end
+    def selection_line(index)
+      tk_send_without_enc('selection', 'line', index)
+      self
+    end
+    def selection_present()
+      bool(tk_send_without_enc('selection', 'present'))
+    end
+    def selection_range(first, last)
+      tk_send_without_enc('selection', 'range', first, last)
+      self
+    end
+    def selection_to(index)
+      tk_send_without_enc('selection', 'to', index)
+      self
+    end
+    def selection_word(index)
+      tk_send_without_enc('selection', 'word', index)
+      self
+    end
+
+    def windows(pat=None)
+      list(tk_send('windows', pat))
+    end
+  end
+end