Top Level Namespace

Includes:
ParseDate

Defined Under Namespace

Modules: DemoBasic, DemoDialog, DemoDnD, DemoManager, DemoSelect, DemoTree, DemoVar, MultiTkIp_PseudoToplevel_Evaluable, TclTk, Tk, TkBgError, TkBindCore, TkCanvasItemConfig, TkClipboard, TkComm, TkComposite, TkConfigMethod, TkConsole, TkCore, TkEvent, TkGrid, TkItemConfigMethod, TkItemConfigOptkeys, TkItemFontOptkeys, TkKinput, TkListItemConfig, TkManageFocus, TkMenuEntryConfig, TkMenuSpec, TkOptionDB, TkPack, TkPackage, TkPalette, TkPlace, TkSelection, TkTextTagConfig, TkTreatFont, TkTreatItemFont, TkTreatTagFont, TkUtil, TkValidation, TkWinfo, TkXIM, TkcTagAccess Classes: AnimatedImageLabel, AnimatedTextLabel, AnimatedWaveDemo, BLT_Calendar_sample, BLT_Graph_Demo, BWidget_Demo, BtnFrame, Button_clone, Button_with_Frame, Clock, Hash, Knights_Tour, Mail, MultiTkIp, MultiTkIp_OK, Object, Othello, PendulumAnimationDemo, PhotoCanvas, RemoteTkIp, ScrListbox, Spinner_demo, TclTkCallback, TclTkCommand, TclTkImage, TclTkInterpreter, TclTkIp, TclTkLib, TclTkLibCommand, TclTkObject, TclTkVariable, TclTkWidget, Test1, TkBindTag, TkBindTagAll, TkBitmapImage, TkCallbackBreak, TkCallbackContinue, TkCallbackEntry, TkCallbackRedo, TkCallbackRetry, TkCallbackReturn, TkCallbackThrow, TkDatabaseClass, TkDialog, TkDialogObj, TkDialog_Demo1, TkDialog_Demo2, TkFont, TkGoldberg_Demo, TkHTML_File_Viewer, TkImage, TkImg_demo, TkKernel, TkLocalJumpError, TkMenubar, TkMsgCatalog, TkMultiColumnList, TkMultiListFrame, TkMultiListbox, TkNamedFont, TkNamespace, TkObject, TkPhotoImage, TkPixmapImage, TkRTTimer, TkScrollbox, TkScrolledCanvas, TkTextFrame, TkTextIO, TkTextImage, TkTextMark, TkTextMarkAnchor, TkTextMarkCurrent, TkTextMarkInsert, TkTextNamedMark, TkTextNamedTag, TkTextTag, TkTextTagSel, TkTextWin, TkTextWindow, TkTimer, TkTree, TkTreeCtrl_demo, TkValidateCommand, TkVarAccess, TkVariable, TkVirtualEvent, TkWarning, TkWarningObj, TkWindow, TkcArc, TkcBitmap, TkcGroup, TkcImage, TkcItem, TkcLine, TkcOval, TkcPolygon, TkcRectangle, TkcTag, TkcTagAll, TkcTagCurrent, TkcTagString, TkcText, TkcWindow, Unicodeout_SampleFrame, ViewIcons

Constant Summary collapse

TkLib_Config = 
{}
TclConfig_Info = 
{}
TkConfig_Info = 
{}
TkSystemMenu = 
Tk::SystemMenu
TopLevel = 
TkToplevel
Frame = 
TkFrame
Label = 
TkLabel
Button = 
TkButton
Radiobutton = 
TkRadioButton
Checkbutton = 
TkCheckButton
Message = 
TkMessage
Entry = 
TkEntry
Spinbox = 
TkSpinbox
Text = 
TkText
Scale = 
TkScale
Scrollbar = 
TkScrollbar
Listbox = 
TkListbox
TkMenu
TkMenubutton
Canvas = 
TkCanvas
Arc = 
TkcArc
Bitmap = 
TkcBitmap
Line = 
TkcLine
Oval = 
TkcOval
Polygon = 
TkcPolygon
Rectangle = 
TkcRectangle
TextItem = 
TkcText
WindowItem = 
TkcWindow
BitmapImage = 
TkBitmapImage
PhotoImage = 
TkPhotoImage
Selection = 
TkSelection
Winfo = 
TkWinfo
Pack = 
TkPack
Grid = 
TkGrid
Place = 
TkPlace
Variable = 
TkVariable
Font = 
TkFont
VirtualEvent = 
TkVirtualEvent
TkRoot = 
Tk::Root
TkAfter = 
TkTimer
TkMsgCat = 
TkMsgCatalog
TkDialog2 = 
TkDialogObj
TkWarning2 = 
TkWarningObj
TktTag = 
TkTextTag
TktNamedTag = 
TkTextNamedTag
TktTagSel = 
TkTextTagSel
TktMark = 
TkTextMark
TktNamedMark = 
TkTextNamedMark
TktMarkInsert = 
TkTextMarkInsert
TktMarkCurrent = 
TkTextMarkCurrent
TktMarkAnchor = 
TkTextMarkAnchor
TkOption = 
TkOptionDB
TkResourceDB = 
TkOptionDB
TkNamedVirtualEvent = 
TkVirtualEvent::PreDefVirtEvent
TktImage = 
TkTextImage
TkcNamedTag = 
TkcTagString
Ttk = 
Tk::Tile
TktWindow = 
TkTextWindow
OPTS = 
{}
ImgFile = 
[File.dirname(__FILE__), 'images','tcllogo.gif'].join(File::Separator)
DEFAULT_TK_ENCODING = 
'UTF-8'
TkWidget = 
TkWindow

Instance Method Summary collapse

Instance Method Details

#anyUnreadDescendants(t, i) ⇒ Object 



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# File 'sample/tkextlib/treectrl/outlook-newgroup.rb', line 434

def anyUnreadDescendants(t, i)
  itemList = []
  item = t.item_firstchild(i)
  itemList.push(item) if item != ''

  while item = itemList.pop
    return true unless @Message[:read][item]

    item2 = t.item_nextsibling(item)
    itemList.push(item2) if item2 != ''
    item2 = t.item_firstchild(item)
    itemList.push(item2) if item2 != ''
  end
  false
end

#arrowMove1(c, x, y) ⇒ Object

arrowMove1 – This method is called for each mouse motion event on box1 (the one at the vertex of the arrow). It updates the controlling parameters for the line and arrowhead.

Arguments: c - The name of the canvas window. x, y - The coordinates of the mouse.



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# File 'sample/demos-en/arrow.rb', line 195

def arrowMove1(c,x,y)
  v = $demo_arrowInfo
  newA = (v.x2+5-c.canvasx(x).round)/10
  newA = 0 if newA < 0
  newA = 25 if newA > 25
  if newA != v.a
    c.move('box1', 10*(v.a-newA), 0)
    v.a = newA
  end
end

#arrowMove2(c, x, y) ⇒ Object

arrowMove2 – This method is called for each mouse motion event on box2 (the one at the trailing tip of the arrowhead). It updates the controlling parameters for the line and arrowhead.

Arguments: c - The name of the canvas window. x, y - The coordinates of the mouse.



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# File 'sample/demos-en/arrow.rb', line 215

def arrowMove2(c,x,y)
  v = $demo_arrowInfo
  newB = (v.x2+5-c.canvasx(x).round)/10
  newB = 0 if newB < 0
  newB = 25 if newB > 25
  newC = (v.y+5-c.canvasy(y).round-5*v.width)/10
  newC = 0 if newC < 0
  newC = 20 if newC > 20
  if newB != v.b || newC != v.c
    c.move('box2', 10*(v.b-newB), 10*(v.c-newC))
    v.b = newB
    v.c = newC
  end
end

#arrowMove3(c, x, y) ⇒ Object

arrowMove3 – This method is called for each mouse motion event on box3 (the one that controls the thickness of the line). It updates the controlling parameters for the line and arrowhead.

Arguments: c - The name of the canvas window. x, y - The coordinates of the mouse.



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# File 'sample/demos-en/arrow.rb', line 239

def arrowMove3(c,x,y)
  v = $demo_arrowInfo
  newWidth = (v.y+2-c.canvasy(y).round)/5
  newWidth = 0 if newWidth < 0
  newWidth = 20 if newWidth > 20
  if newWidth != v.width
    c.move('box3', 0, 5*(v.width-newWidth))
    v.width = newWidth
  end
end

#arrowSetup(c) ⇒ Object

arrowSetup – This method regenerates all the text and graphics in the canvas window. It’s called when the canvas is initially created, and also whenever any of the parameters of the arrow head are changed interactively.

Arguments: c - Name of the canvas widget.



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# File 'sample/demos-en/arrow.rb', line 18

def arrowSetup(c)
  v = $demo_arrowInfo

  # Remember the current box, if there is one.
  tags = c.gettags('current')
  if tags != []
    cur = tags.find{|t| t.kind_of?(String) && t =~ /^box[1-3]$/ }
  else
    cur = nil
  end

  # Create the arrow and outline.
  c.delete('all')
  TkcLine.new(c, v.x1, v.y, v.x2, v.y,
              { 'width'=>10 * v.width,
                'arrowshape'=>[10*v.a, 10*v.b, 10*v.c],
                'arrow'=>'last'
              }.update(v.bigLineStyle) )
  xtip = v.x2 - 10*v.b
  deltaY = 10*v.c + 5*v.width
  TkcLine.new(c, v.x2, v.y, xtip, v.y + deltaY,
              v.x2 - 10*v.a, v.y, xtip, v.y - deltaY, v.x2, v.y,
              'width'=>2, 'capstyle'=>'round', 'joinstyle'=>'round')

  # Create the boxes for reshaping the line and arrowhead.
  TkcRectangle.new(c, v.x2-10*v.a-5, v.y-5, v.x2-10*v.a+5, v.y+5,
                   {'tags'=>['box1', $arrowTag_box]}.update(v.boxStyle) )
  TkcRectangle.new(c, xtip-5, v.y-deltaY-5, xtip+5, v.y-deltaY+5,
                   {'tags'=>['box2', $arrowTag_box]}.update(v.boxStyle) )
  TkcRectangle.new(c, v.x1-5, v.y-5*v.width-5, v.x1+5, v.y-5*v.width+5,
                   {'tags'=>['box3', $arrowTag_box]}.update(v.boxStyle) )
  c.itemconfigure cur, v.activeStyle if cur

  # Create three arrows in actual size with the same parameters
  TkcLine.new(c, v.x2+50, 0, v.x2+50, 1000, 'width'=>2)
  tmp = v.x2+100
  TkcLine.new(c, tmp, v.y-125, tmp, v.y-75, 'width'=>v.width,
              'arrow'=>'both', 'arrowshape'=>[v.a, v.b, v.c])
  TkcLine.new(c, tmp-25, v.y, tmp+25, v.y, 'width'=>v.width,
              'arrow'=>'both', 'arrowshape'=>[v.a, v.b, v.c])
  TkcLine.new(c, tmp-25, v.y+75, tmp+25, v.y+125, 'width'=>v.width,
              'arrow'=>'both', 'arrowshape'=>[v.a, v.b, v.c])

  # Create a bunch of other arrows and text items showing the
  # current dimensions.
  tmp = v.x2+10
  TkcLine.new(c, tmp, v.y-5*v.width, tmp, v.y-deltaY,
              'arrow'=>'both', 'arrowshape'=>v.smallTips)
  TkcText.new(c, v.x2+15, v.y-deltaY+5*v.c, 'text'=>v.c, 'anchor'=>'w')
  tmp = v.x1-10
  TkcLine.new(c, tmp, v.y-5*v.width, tmp, v.y+5*v.width,
              'arrow'=>'both', 'arrowshape'=>v.smallTips)
  TkcText.new(c, v.x1-15, v.y, 'text'=>v.width, 'anchor'=>'e')
  tmp = v.y+5*v.width+10*v.c+10
  TkcLine.new(c, v.x2-10*v.a, tmp, v.x2, tmp,
              'arrow'=>'both', 'arrowshape'=>v.smallTips)
  TkcText.new(c, v.x2-5*v.a, tmp+5, 'text'=>v.a, 'anchor'=>'n')
  tmp = tmp+25
  TkcLine.new(c, v.x2-10*v.b, tmp, v.x2, tmp,
              'arrow'=>'both', 'arrowshape'=>v.smallTips)
  TkcText.new(c, v.x2-5*v.b, tmp+5, 'text'=>v.b, 'anchor'=>'n')

  if $tk_version =~ /^4.*/
    TkcText.new(c, v.x1, 310, 'text'=>"'width'=>#{v.width}", 'anchor'=>'w',
                'font'=>'-*-Helvetica-Medium-R-Normal--*-180-*-*-*-*-*-*')
    TkcText.new(c, v.x1, 330,
                'text'=>"'arrowshape'=>[#{v.a}, #{v.b}, #{v.c}]",'anchor'=>'w',
                'font'=>'-*-Helvetica-Medium-R-Normal--*-180-*-*-*-*-*-*')
  else
    TkcText.new(c, v.x1, 310, 'text'=>"'width'=>#{v.width}", 'anchor'=>'w',
                'font'=>'Helvetica 18')
    TkcText.new(c, v.x1, 330,
                'text'=>"'arrowshape'=>[#{v.a}, #{v.b}, #{v.c}]",
                'anchor'=>'w', 'font'=>'Helvetica 18')
  end

  v.count += 1
end

#base_frame ⇒ Object

See Code / Dismiss buttons



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# File 'sample/demos-en/tree.rb', line 37

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=>$image['view'], :compound=>:left,
                         :command=>proc{showCode 'tree'}),
         Ttk::Button.new(frame, :text=>'Dismiss',
                         :image=>$image['delete'], :compound=>:left,
                         :command=>proc{
                           $tree_demo.destroy
                           $tree_demo = nil
                         }),
         :padx=>4, :pady=>4)
  grid_columnconfigure(0, :weight=>1)
  pack(:side=>:bottom, :fill=>:x)
}

#bitmapRow(w, *args) ⇒ Object

bitmapRow – Create a row of bitmap items in a window.

Arguments: w - The parent window that is to contain the row. args - The names of one or more bitmaps, which will be displayed

in a new row across the bottom of w along with their
names.



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# File 'sample/demos-en/bitmap.rb', line 17

def bitmapRow(w,*args)
  TkFrame.new(w){|row|
    pack('side'=>'top', 'fill'=>'both')
    for bitmap in args
      TkFrame.new(row){|base|
        pack('side'=>'left', 'fill'=>'both', 'pady'=>'.25c', 'padx'=>'.25c')
        TkLabel.new(base, 'text'=>bitmap, 'width'=>9).pack('side'=>'bottom')
        Tk::Label.new(base, 'bitmap'=>bitmap).pack('side'=>'bottom')
      }
    end
  }
end

#browse(dir, file) ⇒ Object 



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# File 'sample/tkbrowse.rb', line 52

def browse (dir, file)
  file="#{dir}/#{file}"
  if File.directory? file
    browsedir(file)
  else
    if File.file? file
      if ENV['EDITOR']
        system format("%s %s&", ENV['EDITOR'], file)
      else
        system "xedit #{file}&"
      end
    else
      STDERR.print "\"#{file}\" isn't a directory or regular file"
    end
  end
end

#browsedir(dir) ⇒ Object 



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# File 'sample/tkbrowse.rb', line 19

def browsedir (dir)
  if $dirlist.key? dir
    $dirlist[dir]
  else
    top = if $dirlist.size > 0 then TkToplevel.new else nil end
    list = TkScrollbox.new(top) {
      relief 'raised'
      width 20
      height 20
      setgrid 'yes'
      pack
    }
    list.insert 'end', *`ls #{dir}`.split

    # Set up bindings for the browser.

    list.focus
    list.bind "Control-q", proc{exit}
    list.bind "Control-c", proc{exit}
    list.bind "Control-p", proc{
      print "selection <", TkSelection.get, ">\n"
    }

    list.bind "Double-Button-1", proc{
      for i in TkSelection.get.split
        print "clicked ", i, "\n"
        browse dir, i
      end
    }
    $dirlist[dir] = list
  end
end

#butPress(w, color) ⇒ Object

Method that’s invoked when the button embedded in the canvas is invoked.



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# File 'sample/demos-jp/items.rb', line 375

def butPress(w,color)
  i = TkcText.new(w, '25c', '18.1c',
                  'text'=>'いてて!!', 'fill'=>color, 'anchor'=>'n')
  Tk.after(500, proc{w.delete i})
end

#changepage(tbl_list, tbl, ent, col, var, elem, op) ⇒ Object 



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# File 'sample/tkextlib/tktable/spreadsheet.rb', line 44

def changepage(tbl_list, tbl, ent, col, var, elem, op)
  if elem != ''
    page = var[elem]
  else
    page = var.value
  end
  if tbl[:variable] != tbl_list[page].id
    tbl.selection_clear_all
    tbl.variable(tbl_list[page])
    ent.textvariable(tbl_list[page].ref('active'))
    tbl.activate('origin')
    tbl.tag_configure('colored', :bg=>col[page])
    tbl.see('active')
  end
end

#changeState(st) ⇒ Object 



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# File 'sample/tkextlib/tile/demo.rb', line 945

def changeState(st)
  if $Widget.value != ''
    if $State.bool_element(st)
      $Widget.window.ttk_state(st)
    else
      $Widget.window.ttk_state("!#{st}")
    end
  end
end

#changeToolbars ⇒ Object 



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# File 'sample/tkextlib/tile/demo.rb', line 291

def changeToolbars
  foreachWidget($TOOLBARS,
                proc{|w|
                  begin
                    w.compound($V[:COMPOUND])
                  rescue
                  end
                })
end

#check ⇒ Object 



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# File 'sample/tkbiff.rb', line 100

def check
  $check_time = Time.now
  size = File.size($spool)
  if size and size != $spool_size
    $spool_size = size
    pop_up if size > 0
  end
  Tk.after 5000, proc{check}
end

#check_NG_path(path_list) ⇒ Object 



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# File 'extconf.rb', line 984

def check_NG_path(path_list)
  path_list.find_all{|path|
    not (TkLib_Config["tcl-NG-path"].include?(path) &&
         TkLib_Config["tk-NG-path"].include?(path))
  }
end

#check_pkg(file, verbose = false) ⇒ Object 



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# File 'lib/tkextlib/pkg_checker.rb', line 91

def check_pkg(file, verbose=false)
  pkg_list = get_pkg_list(file)

  error_list = []
  success_list = {}

  pkg_list.each{|name, type|
    next if success_list[name]

    begin
      case type
      when :package
        ver = TkPackage.require(name)
        success_list[name] = ver
        error_list.delete_if{|n, t| n == name}

      when :library
        Tk.load_tcllibrary(name)
        success_list[name] = :library
        error_list.delete_if{|n, t| n == name}

      when :script
        Tk.load_tclscript(name)
        success_list[name] = :script
        error_list.delete_if{|n, t| n == name}

      when :require_ruby_lib
        require name

      end
    rescue => e
      if verbose
        error_list << [name, type, e.message]
      else
        error_list << [name, type]
      end
    end
  }

  success_list.dup.each{|name, ver|
    unless ver.kind_of?(String)
      begin
        ver = TkPackage.require(name)
        sccess_list[name] = ver
      rescue
      end
    end
  }

  [success_list, error_list]
end

#check_shlib_search_path(paths) ⇒ Object 



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# File 'extconf.rb', line 991

def check_shlib_search_path(paths)
  if !paths || paths.empty?
    path_list = []

    #if TkLib_Config["ActiveTcl"]
    #  path_list.concat Dir.glob(TkLib_Config["ActiveTcl"], File::FNM_CASEFOLD).sort.reverse
    #end
    if TkLib_Config["ActiveTcl"].kind_of?(String)  # glob path
      path_list.concat Dir.glob(TkLib_Config["ActiveTcl"], File::FNM_CASEFOLD).sort.reverse
    end

    vers = get_shlib_versions
    path_head, path_dirs = get_shlib_path_head

    path_list.concat vers.map{|ver|
      path_head.map{|head|
        if ver.empty?
          head + "/lib"
        else
          dirs = []

          if Dir.glob(head, File::FNM_CASEFOLD).find{|dir| dir == head}
            dirs << head + "/lib"
          end

          if !Dir.glob(head + "-*", File::FNM_CASEFOLD).empty?
            dirs << head + "-#{ver}/lib" if !Dir.glob(head + "-[89].*", File::FNM_CASEFOLD).empty?
            dirs << head + "-#{ver.delete('.')}/lib" if !Dir.glob(head + "-[89][0-9]*", File::FNM_CASEFOLD).empty?
          end

          if !Dir.glob(head + "[_-]*", File::FNM_CASEFOLD).empty?
            dirs << head + "_#{ver}/lib" if !Dir.glob(head + "_[89].*", File::FNM_CASEFOLD).empty?
            dirs << head + "-#{ver}/lib" if !Dir.glob(head + "-[89].*", File::FNM_CASEFOLD).empty?
            dirs << head + "_#{ver.delete('.')}/lib" if !Dir.glob(head + "_[89][0-9]*", File::FNM_CASEFOLD).empty?
            dirs << head + "-#{ver.delete('.')}/lib" if !Dir.glob(head + "-[89][0-9]*", File::FNM_CASEFOLD).empty?
          end

          dirs
        end
      }
    }.flatten!

    path_list.concat path_dirs

  else
    # paths is a string with PATH environment style
    path_list = paths.split((is_win32?)? ';': ':')
  end

  path_list = check_NG_path(path_list)
  path_list.map!{|path| path.strip}

  if !CROSS_COMPILING and (is_win32? || is_macosx?)
    # exist-dir only
    path_list.delete_if{|path| Dir.glob(File.join(path, "*.{a,so,dll,lib}")).empty?}
  end

  # keep paths for searching dynamic libs
  #$LIBPATH |= path_list
  path_list.uniq
end

#check_tcl_NG_path(path_list) ⇒ Object 



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# File 'extconf.rb', line 976

def check_tcl_NG_path(path_list)
  path_list.find_all{|path| not TkLib_Config["tcl-NG-path"].include?(path) }
end

#check_tcltk_version(version) ⇒ Object 



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# File 'extconf.rb', line 129

def check_tcltk_version(version)
  return [nil, nil] unless version.kind_of? String

  tclver, tkver = version.split(',')
  tclver = tclver.strip
  return [tclver, tkver.strip] if tkver

  dot = major = minor_dot = minor = plvl_dot = plvl = ext = nil
  if tclver =~ /^(\d)(\.?)(\d)(\.?)(\d*)(.*)$/
    major = $1; minor_dot = $2; minor = $3; plvl_dot = $4; plvl = $5; ext = $6
    dot = ! minor_dot.empty?
    if plvl_dot.empty? && ! plvl.empty?
      minor << plvl
    end
  elsif tclver =~ /^(\d)(\.?)(\d?)(.*)$/
    major = $1; minor_dot = $2; minor = $3; ext = $4
    dot = ! minor_dot.empty?
  else # unknown -> believe user
    return [tclver, tkver]
  end

  # check Tcl7.6 / Tk4.2 ?
  if major == "7" # Tcl7.6 ( not support Tclversion < 7.6 )
    # Tk4.2
    tkver  = "4" + ((dot)? ".": "") + ((minor.empty)? "": "2") + ext
  elsif major == "4" # Tk4.2 ( not support Tkversion < 4.2 )
    # Tcl7.6
    tkver = tclver
    tclver = "7" + ((dot)? ".": "") + ((minor.empty)? "": "6") + ext
  end

  tkver = tclver unless tkver

  [tclver, tkver]
end

#check_tk_NG_path(path_list) ⇒ Object 



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# File 'extconf.rb', line 980

def check_tk_NG_path(path_list)
  path_list.find_all{|path| not TkLib_Config["tk-NG-path"].include?(path) }
end

#collect_tcltk_defs(tcl_defs_str, tk_defs_str) ⇒ Object 



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# File 'extconf.rb', line 336

def collect_tcltk_defs(tcl_defs_str, tk_defs_str)
  conflicts = [
    'PACKAGE_NAME', 'PACKAGE_TARNAME', 'PACKAGE_VERSION',
    'PACKAGE_STRING', 'PACKAGE_BUGREPORT'
  ]

  begin
    # Ruby 1.9.x or later
    arch_config_h = RbConfig.expand($arch_hdrdir + "/ruby/config.h")
    if File.exist?(arch_config_h)
      keys = []
      IO.foreach(arch_config_h){|line|
        if line =~ /^#define +([^ ]+)/
            keys << $1
        end
      }
      conflicts = keys
    end
  rescue
    # ignore, use default
  end

  if tcl_defs_str
    tcl_defs = tcl_defs_str.split(/ ?-D/).map{|s|
      s =~ /^([^=]+)(.*)$/
      [$1, $2]
    }
  else
    tcl_defs = []
  end

  if tk_defs_str
    tk_defs = tk_defs_str.split(/ ?-D/).map{|s|
      s =~ /^([^=]+)(.*)$/
      [$1, $2]
    }
  else
    tk_defs = []
  end

  defs = tcl_defs | tk_defs

  defs.delete_if{|name,value|
    conflicts.include?(name) ||
      ( (vtcl = tcl_defs.assoc(name)) && (vtk = tk_defs.assoc(name)) &&
          vtcl != vtk )
  }

  defs.map{|ary| s = ary.join(''); (s.strip.empty?)? "": "-D" << s}
end

#colorize(num) ⇒ Object 



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# File 'sample/tkextlib/tktable/valid.rb', line 16

def colorize(num)
  num = Integer(num)
  return 'colored' if (num > 0 && num % 2 == 1)
end

#compareOnOff(w, c, item1, item2) ⇒ Object

TreeCtrl 1.0



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# File 'sample/tkextlib/treectrl/mailwasher.rb', line 258

def compareOnOff(w, c, item1, item2)
  s1 = w.item_state_forcolumn(item1, c)
  s2 = w.item_state_forcolumn(item2, c)
  if (s1 == s2)
    0
  elsif (s1 == 'CHECK')
    -1
  else
    1
  end
end

#count ⇒ Object

Now set up the GUI



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# File 'sample/demos-jp/textpeer.rb', line 65

makeClone(count, base_frame, first)

#cursor_window(top = nil) ⇒ Object 



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# File 'sample/tkextlib/treectrl/demo.rb', line 1146

def cursor_window(top = nil)
  top.destroy if top.kind_of?(TkWindow) && top.winfo_exist?
  top = TkToplevel.new(:title=>'Cursor Window')

  c = TkCanvas.new(top, :background=>'white',
                   :width=>50*10, :highlightthickness=>0,
                   :borderwidth=>0).pack(:expand=>true, :fill=>:both)
  cursors = %w(
	X_cursor
	arrow
	based_arrow_down
	based_arrow_up
	boat
	bogosity
	bottom_left_corner
	bottom_right_corner
	bottom_side
	bottom_tee
	box_spiral
	center_ptr
	circle
	clock
	coffee_mug
	cross
	cross_reverse
	crosshair
	diamond_cross
	dot
	dotbox
	double_arrow
	draft_large
	draft_small
	draped_box
	exchange
	fleur
	gobbler
	gumby
	hand1
	hand2
	heart
	icon
	iron_cross
	left_ptr
	left_side
	left_tee
	leftbutton
	ll_angle
	lr_angle
	man
	middlebutton
	mouse
	pencil
	pirate
	plus
	question_arrow
	right_ptr
	right_side
	right_tee
	rightbutton
	rtl_logo
	sailboat
	sb_down_arrow
	sb_h_double_arrow
	sb_left_arrow
	sb_right_arrow
	sb_up_arrow
	sb_v_double_arrow
	shuttle
	sizing
	spider
	spraycan
	star
	target
	tcross
	top_left_arrow
	top_left_corner
	top_right_corner
	top_side
	top_tee
	trek
	ul_angle
	umbrella
	ur_angle
	watch
	xterm
    )

  orig_cursor = c.cursor
  col = 0
  row = 0

  cursors.each{|cur|
    x = col * 50
    y = row * 40

    begin
      c.cursor = cur

      r = TkcRectangle.new(c, x, y, x+50, y+40,
                           :fill=>'gray90', :outline=>'black', :width=>2)
      t = TkcText.new(c, x+50/2, y+4, :text=>cur, :anchor=>:n, :width=>42)

      col += 1
      if col >= 10
        col = 0
        row += 1
      end

      r.bind('Enter', proc{c.cursor = cur; r.fill = 'linen'})
      r.bind('Leave', proc{c.cursor = ''; r.fill = 'gray90'})

      t.bind('Enter', proc{c.cursor = cur})
      t.bind('Leave', proc{c.cursor = ''})
    rescue
      c.cursor = orig_cursor
    end
  }

  c.cursor = orig_cursor
  c.height = (row + 1) * 40
end

#def_puzzleswitch_proc(w, num) ⇒ Object

proc のスコープを閉じるため，proc 生成メソッドを用意 こうしておかねば，ループ中で値が変化する num の影響を受けて puzzleSwitch の第 2 引数が変化してしまい，期待通りにはならない．



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# File 'sample/demos-jp/puzzle.rb', line 87

def def_puzzleswitch_proc(w, num)
  proc{puzzleSwitch w, num}
end

#demoBitmaps(t) ⇒ Object

Demo: Bitmaps



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# File 'sample/tkextlib/treectrl/bitmaps.rb', line 4

def demoBitmaps(t)
  #if $Version_1_1_OrLater
  if @has_bgimg
    t.configure(:showroot=>false, :showbuttons=>false, :showlines=>false,
                :selectmode=>:browse, :orient=>:horizontal, :wrap=>'5 items',
                :showheader=>false, :backgroundimage=>@images['sky'])
  else
    t.configure(:showroot=>false, :showbuttons=>false, :showlines=>false,
                :selectmode=>:browse, :orient=>:horizontal, :wrap=>'5 items',
                :showheader=>false)
  end

  if $HasColumnCreate
    t.column_create(:itembackground=>['gray90', []])
  else
    t.column_configure(0, :itembackground=>['gray90', []])
  end

  t.element_create('elemTxt', :text,
                   :fill=>[@SystemHighlightText, ['selected', 'focus']])
  t.element_create('elemSelTxt', :rect, :showfocus=>true,
                   :fill=>[@SystemHighlight, ['selected', 'focus']])
  t.element_create('elemSelBmp', :rect, :outlinewidth=>4,
                   :outline=>[@SystemHighlight, ['selected', 'focus']])
  t.element_create('elemBmp', :bitmap,
                   :foreground=>[@SystemHighlight, ['selected', 'focus']],
                   :background=>'linen',
                   :bitmap=>['question' ['selected']])

  s = t.style_create('STYLE', :orient=>:vertical)
  t.style_elements(s, ['elemSelBmp', 'elemBmp', 'elemSelTxt', 'elemTxt'])
  t.style_layout(s, 'elemSelBmp', :union=>'elemBmp', :ipadx=>6, :ipady=>6)
  t.style_layout(s, 'elemBmp',    :pady=>[0, 6], :expand=>:we)
  t.style_layout(s, 'elemSelTxt', :union=>'elemTxt', :ipadx=>2)
  t.style_layout(s, 'elemTxt',    :expand=>:we)

  # Set default item style
  if $Version_1_1_OrLater
    t.defaultstyle = [s]
  end

  bitmap_names = %w(error gray75 gray50 gray25 gray12
                    hourglass info questhead question warning)

  bitmap_names.each{|name|
    i = t.item_create
    unless $Version_1_1_OrLater
      t.item_style_set(i, 0, s)
    end
    t.item_text(i, 0, name)
    t.item_element_configure(i, 0, 'elemBmp', :bitmap=>name)
    t.item_lastchild(:root, i)
  }

  bitmap_names.each{|name|
    i = t.item_create
    t.item_style_set(i, 0, s)
    t.item_text(i, 0, name)
    if true
      t.item_element_configure(i, 0, 'elemBmp', :bitmap=>name,
                               :foreground=>['brown', ''],
                               :background=>['', ''])
    else
      t.item_element_configure(i, 0, 'elemBmp', :bitmap=>name,
                               :foreground=>[
                                 @SystemHighlight, ['selected', 'focus'],
                                 'brown', []
                               ],
                               :background=>['', []])
    end
    t.item_lastchild(:root, i)
  }
end

#demoExplorerAux(t, dir_proc, file_proc) ⇒ Object 



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# File 'sample/tkextlib/treectrl/explorer.rb', line 2

def demoExplorerAux(t, dir_proc, file_proc)
  base_dir = File.dirname(File.dirname(@ScriptDir))

  clicks = Tk::Clock.clicks
  globDirs = Dir.glob(File.join(base_dir, '*')).find_all{|file|
    FileTest.directory?(file)
  }
  clickGlobDirs = Tk::Clock.clicks - clicks

  clicks = Tk::Clock.clicks
  list = globDirs.sort
  clickSortDirs = Tk::Clock.clicks - clicks

  clicks = Tk::Clock.clicks
  list.each{|file| dir_proc.call(file)}
  clickAddDirs = Tk::Clock.clicks - clicks

  clicks = Tk::Clock.clicks
  globFiles = Dir.glob(File.join(base_dir, '*')).find_all{|file|
    FileTest.file?(file)
  }
  clickGlobFiles = Tk::Clock.clicks - clicks

  clicks = Tk::Clock.clicks
  list = globFiles.sort
  clickSortFiles = Tk::Clock.clicks - clicks

  clicks = Tk::Clock.clicks
  list.each{|file| file_proc.call(file)}
  clickAddFiles = Tk::Clock.clicks - clicks

  gd = '%.2g' % (clickGlobDirs / 1000000.0)
  sd = '%.2g' % (clickSortDirs / 1000000.0)
  ad = '%.2g' % (clickAddDirs  / 1000000.0)
  gf = '%.2g' % (clickGlobFiles / 1000000.0)
  sf = '%.2g' % (clickSortFiles / 1000000.0)
  af = '%.2g' % (clickAddFiles  / 1000000.0)

  puts "dirs(#{globDirs.length}) glob/sort/add #{gd}/#{sd}/#{ad}    files(#{globFiles.length}) glob/sort/add #{gf}/#{sf}/#{af}"

  @Priv[:DirCnt, t] = globDirs.length
end

#demoExplorerDetails(t) ⇒ Object

Demo: explorer files



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# File 'sample/tkextlib/treectrl/explorer.rb', line 48

def demoExplorerDetails(t)
  height = t.font.metrics(:linespace)
  height = 18 if height < 18

  t.configure(:showroot=>false, :showbuttons=>false, :showlines=>false,
              :itemheight=>height, :selectmode=>:extended,
              :xscrollincrement=>20, :scrollmargin=>16,
              :xscrolldelay=>[500, 50], :yscrolldelay=>[500, 50])

  init_pics('small-*')

  if $HasColumnCreate
    t.column_create(:text=>'Name', :tag=>'name',
                    :width=>200, :arrow=>:up, :arrowpad=>6)
    t.column_create(:text=>'Size', :tag=>'size', :justify=>:right,
                    :width=>60, :arrowside=>:left, :arrowgravity=>:right)
    t.column_create(:text=>'Type', :tag=>'type', :width=>120)
    t.column_create(:text=>'Modified', :tag=>'modified', :width=>130)
  else
    t.column_configure(0, :text=>'Name', :tag=>'name',
                       :width=>200, :arrow=>:up, :arrowpad=>6)
    t.column_configure(1, :text=>'Size', :tag=>'size', :justify=>:right,
                       :width=>60, :arrowside=>:left, :arrowgravity=>:right)
    t.column_configure(2, :text=>'Type', :tag=>'type', :width=>120)
    t.column_configure(3, :text=>'Modified', :tag=>'modified', :width=>130)
  end

  t.element_create('e1', :image,
                   :image=>[
                     @sel_images['small-folder'], ['selected'],
                     @images['small-folder'], []
                   ])
  t.element_create('e2', :text, :lines=>1,
                   :fill=>[@SystemHighlightText, ['selected', 'focus']])
  t.element_create('txtType', :text, :lines=>1)
  t.element_create('txtSize', :text, :lines=>1,
                   :datatype=>:integer, :format=>'%dKB')
  t.element_create('txtDate', :text, :lines=>1,
                   :datatype=>:time, :format=>'%d/%m/%y %I:%M %p')
  t.element_create('e4', :rect, :showfocus=>true,
                   :fill=>[
                     @SystemHighlight, ['selected', 'focus'],
                     'gray', ['selected', '!focus']
                   ])

  # image + text
  s = t.style_create('styName', :orient=>:horizontal)
  t.style_elements(s, ['e4', 'e1', 'e2'])
  t.style_layout(s, 'e1', :expand=>:ns)
  t.style_layout(s, 'e2', :padx=>[2,0], :squeeze=>:x, :expand=>:ns)
  t.style_layout(s, 'e4', :union=>['e2'], :iexpand=>:ns, :ipadx=>2)

  # column 1: text
  s = t.style_create('stySize')
  t.style_elements(s, ['txtSize'])
  t.style_layout(s, 'txtSize', :padx=>6, :squeeze=>:x, :expand=>:ns)

  # column 2: text
  s = t.style_create('styType')
  t.style_elements(s, ['txtType'])
  t.style_layout(s, 'txtType', :padx=>6, :squeeze=>:x, :expand=>:ns)

  # column 3: text
  s = t.style_create('styDate')
  t.style_elements(s, ['txtDate'])
  t.style_layout(s, 'txtDate', :padx=>6, :squeeze=>:x, :expand=>:ns)

  @Priv[:edit, t] = ['e2']
  @Priv[:sensitive, t] = [ ['name', 'styName', 'e1', 'e2'] ]
  @Priv[:dragimage, t] = [ ['name', 'styName', 'e1', 'e2'] ]

  t.notify_bind(t, 'Edit-accept',
                proc{|w, i, tt| w.item_text(i, 0, tt)}, '%T %I %t')

  dir_proc = proc{|file|
    item = t.item_create
    t.item_style_set(item, 0, 'styName', 2, 'styType', 3, 'styDate')
    t.item_complex(item,
                   [['e2', {:text=>File.basename(file)}]],
                   [],
                   [['txtType', {:text=>'Folder'}]],
                   [['txtDate', {:data=>File.mtime(file).tv_sec}]])
    t.item_lastchild(:root, item)
  }

  file_proc = proc{|file|
    item = t.item_create
    t.item_style_set(item, 0, 'styName', 1, 'stySize',
                           2, 'styType', 3, 'styDate')

    ext = File.extname(file)
    case ext
    when '.dll'
      img = 'small-dll'
    when '.exe'
      img = 'small-exe'
    when '.txt'
      img = 'small-txt'
    else
      img = 'small-file'
    end

    type = ext.upcase
    type = type[1..-1] << ' ' unless type.empty?
    type << 'File'

    t.item_complex(item,
                   [
                     ['e1', {:image=>[@sel_images[img], ['selected'],
                                      @images[img], []]}],
                     ['e2', {:text=>File.basename(file)}]
                   ],
                   [ ['txtSize', {:data=>File.size(file)/1024 + 1}] ],
                   [ ['txtType', {:text=>type}] ],
                   [ ['txtDate', {:data=>File.mtime(file).tv_sec}] ]
                   )
    t.item_lastchild(:root, item)
  }

  demoExplorerAux(t, dir_proc, file_proc)

  @SortColumn = 0
  t.notify_bind(t, 'Header-invoke',
                proc{|w, c| explorerHeaderInvoke(t, w, c)}, '%T %C')

  t.bindtags = [ t, 'TreeCtrlFileList', Tk::TreeCtrl, t.winfo_toplevel, :all ]
end

#demoExplorerLargeIcons(t) ⇒ Object 



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# File 'sample/tkextlib/treectrl/explorer.rb', line 240

def demoExplorerLargeIcons(t)
  # Item height is 32 for icon, 4 padding, 3 lines of text
  itemHeight = 32 + 4 + t.font.metrics(:linespace) * 3

  t.configure(:showroot=>false, :showbuttons=>false, :showlines=>false,
              :selectmode=>:extended, :wrap=>:window, :orient=>:horizontal,
              :itemheight=>itemHeight, :showheader=>false, :scrollmargin=>16,
              :xscrolldelay=>[500, 50], :yscrolldelay=>[500, 50])

  init_pics('big-*')

  if $HasColumnCreate
    t.column_create(:width=>75)
  else
    t.column_configure(0, :width=>75)
  end

  t.element_create('elemImg', :image,
                   :image=>[
                     @sel_images['big-folder'], ['selected'],
                     @images['big-folder'], []
                   ])
  t.element_create('elemTxt', :text, :justify=>:center,
                   :lines=>1, :width=>71, :wrap=>:word,
                   :fill=>[@SystemHighlightText, ['selected', 'focus']])
  t.element_create('elemSel', :rect, :showfocus=>true,
                   :fill=>[
                     @SystemHighlight, ['selected', 'focus'],
                     'gray', ['selected']
                   ])

  # image + text
  s = t.style_create('STYLE', :orient=>:vertical)
  t.style_elements(s, ['elemSel', 'elemImg', 'elemTxt'])
  t.style_layout(s, 'elemImg', :expand=>:we)
  t.style_layout(s, 'elemTxt',
                 :pady=>[4,0], :padx=>2, :squeeze=>:x, :expand=>:we)
  t.style_layout(s, 'elemSel', :union=>['elemTxt'])

  @Priv[:edit, t] = ['elemTxt']
  @Priv[:sensitive, t] = [ [0, 'STYLE', 'elemImg', 'elemTxt'] ]
  @Priv[:dragimage, t] = [ [0, 'STYLE', 'elemImg', 'elemTxt'] ]

  t.notify_bind(t, 'Edit-accept',
                proc{|w, i, tt| w.item_text(i, 0, tt)}, '%T %I %t')

  dir_proc = proc{|file|
    item = t.item_create
    t.item_style_set(item, 0, 'STYLE')
    t.item_text(item, 0, File.basename(file))
    t.item_lastchild(:root, item)
  }

  file_proc = proc{|file|
    item = t.item_create
    t.item_style_set(item, 0, 'STYLE')

    ext = File.extname(file)
    case ext
    when '.dll'
      img = 'big-dll'
    when '.exe'
      img = 'big-exe'
    when '.txt'
      img = 'big-txt'
    else
      img = 'big-file'
    end

    type = ext.upcase
    type = type[1..-1] << ' ' unless type.empty?
    type << 'File'

    t.item_complex(item,
                   [
                     ['elemImg', {:image=>[@sel_images[img], ['selected'],
                                           @images[img], []]}],
                     ['elemTxt', {:text=>File.basename(file)}]
                   ])
    t.item_lastchild(:root, item)
  }

  demoExplorerAux(t, dir_proc, file_proc)

  t.activate(t.index('root firstchild'))

  t.notify_bind(t, 'ActiveItem',
                proc{|w, a, c|
                  w.item_element_configure(a, 0, 'elemTxt', :lines=>'')
                  w.item_element_configure(c, 0, 'elemTxt', :lines=>3)
                }, '%T %p %c')

  t.bindtags = [ t, 'TreeCtrlFileList', Tk::TreeCtrl, t.winfo_toplevel, :all ]
end

#demoExplorerList(t) ⇒ Object

Tree is vertical, wrapping occurs at bottom of window, each range has the same width (as wide as the longest item), xscrollincrement is by range



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# File 'sample/tkextlib/treectrl/explorer.rb', line 345

def demoExplorerList(t)
  height = t.font.metrics(:linespace) + 2
  height = 18 if height < 18

  t.configure(:showroot=>false, :showbuttons=>false, :showlines=>false,
              :itemheight=>height, :selectmode=>:extended, :wrap=>:window,
              :showheader=>false, :scrollmargin=>16,
              :xscrolldelay=>[500, 50], :yscrolldelay=>[500, 50])

  init_pics('small-*')

  if $HasColumnCreate
    t.column_create(:widthhack=>true)
  else
    t.column_configure(0, :widthhack=>true)
  end

  t.element_create('elemImg', :image,
                   :image=>[
                     @sel_images['small-folder'], ['selected'],
                     @images['small-folder'], []
                   ])
  t.element_create('elemTxt', :text, :lines=>1,
                   :fill=>[@SystemHighlightText, ['selected', 'focus']])
  t.element_create('elemSel', :rect, :showfocus=>true,
                   :fill=>[
                     @SystemHighlight, ['selected', 'focus'],
                     'gray', ['selected', '!focus']
                   ])

  # image + text
  s = t.style_create('STYLE')
  t.style_elements(s, ['elemSel', 'elemImg', 'elemTxt'])
  t.style_layout(s, 'elemImg', :expand=>:ns)
  t.style_layout(s, 'elemTxt', :squeeze=>:x, :expand=>:ns, :padx=>[2,0])
  t.style_layout(s, 'elemSel', :union=>['elemTxt'], :iexpand=>:ns, :ipadx=>2)

  @Priv[:edit, t] = ['elemTxt']
  @Priv[:sensitive, t] = [ [0, 'STYLE', 'elemImg', 'elemTxt'] ]
  @Priv[:dragimage, t] = [ [0, 'STYLE', 'elemImg', 'elemTxt'] ]

  t.notify_bind(t, 'Edit-accept',
                proc{|w, i, tt| w.item_text(i, 0, tt)}, '%T %I %t')

  dir_proc = proc{|file|
    item = t.item_create
    t.item_style_set(item, 0, 'STYLE')
    t.item_text(item, 0, File.basename(file))
    t.item_lastchild(:root, item)
  }

  file_proc = proc{|file|
    item = t.item_create
    t.item_style_set(item, 0, 'STYLE')

    ext = File.extname(file)
    case ext
    when '.dll'
      img = 'small-dll'
    when '.exe'
      img = 'small-exe'
    when '.txt'
      img = 'small-txt'
    else
      img = 'small-file'
    end

    type = ext.upcase
    type = type[1..-1] << ' ' unless type.empty?
    type << 'File'

    t.item_complex(item,
                   [
                     ['elemImg', {:image=>[@sel_images[img], ['selected'],
                                           @images[img], []]}],
                     ['elemTxt', {:text=>File.basename(file)}]
                   ])
    t.item_lastchild(:root, item)
  }

  demoExplorerAux(t, dir_proc, file_proc)

  t.activate(t.item_firstchild(:root))

  t.bindtags = [ t, 'TreeCtrlFileList', Tk::TreeCtrl, t.winfo_toplevel, :all ]
end

#demoExplorerSmallIcons(t) ⇒ Object

Tree is horizontal, wrapping occurs at right edge of window, each item is as wide as the smallest needed multiple of 110 pixels



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# File 'sample/tkextlib/treectrl/explorer.rb', line 337

def demoExplorerSmallIcons(t)
  demoExplorerList(t)
  t.configure(:orient=>:horizontal, :xscrollincrement=>0)
  t.column_configure(0, :width=>'', :stepwidth=>110, :widthhack=>false)
end

#demoHelpContents(t) ⇒ Object

Demo: Help contents



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# File 'sample/tkextlib/treectrl/help.rb', line 4

def demoHelpContents(t)
  height = t.font.metrics(:linespace)
  height = 18 if height < 18
  t.configure(:showroot=>false, :showbuttons=>false, :showlines=>false,
              :itemheight=>height, :selectmode=>:browse)

  init_pics('help-*')

  if $Version_1_1_OrLater
    t.column_create(:text=>'Help Contents')
  else # TreeCtrl 1.0
    t.column_configure(0, :text=>'Help Contents')
  end

  # Define a new item state
  t.state_define('mouseover')

  t.element_create('e1', :image, :image=>@images['help-page'])
  t.element_create('e2', :image, :image=>[
                     @images['help-book-open'], ['open'],
                     @images['help-book-closed'], [],
                   ])
  t.element_create('e3', :text,
                   :font=>[t.font.dup.underline(true), ['mouseover']],
                   :fill=>[
                     @SystemHighlightText, ['selected', 'focus'],
                     'blue', ['mouseover']
                   ])
  t.element_create('e4', :rect, :showfocus=>true,
                   :fill=>[@SystemHighlight, ['selected', 'focus']])

  # book
  s = t.style_create('s1')
  t.style_elements(s, ['e4', 'e1', 'e3'])
  t.style_layout(s, 'e1', :padx=>[0,4], :expand=>:ns)
  t.style_layout(s, 'e3', :expand=>:ns)
  t.style_layout(s, 'e4', :union=>['e3'], :iexpand=>:ns, :ipadx=>2)

  # page
  s = t.style_create('s2')
  t.style_elements(s, ['e4', 'e2', 'e3'])
  t.style_layout(s, 'e2', :padx=>[0,4], :expand=>:ns)
  t.style_layout(s, 'e3', :expand=>:ns)
  t.style_layout(s, 'e4', :union=>['e3'], :iexpand=>:ns, :ipadx=>2)

  parentList = [:root, '', '', '', '', '', '']
  parent = :root
  [
     [0, 's1', "Welcome to Help"],
     [0, 's2', "Introducing Windows 98"],
        [1, 's2', "How to Use Help"],
           [2, 's1', "Find a topic"],
           [2, 's1', "Get more out of help"],
        [1, 's2', "Register Your Software"],
           [2, 's1', "Registering Windows 98 online"],
        [1, 's2', "What's New in Windows 98"],
           [2, 's1', "Innovative, easy-to-use features"],
           [2, 's1', "Improved reliability"],
           [2, 's1', "A faster operating system"],
           [2, 's1', "True Web integration"],
           [2, 's1', "More entertaining and fun"],
        [1, 's2', "If You're New to Windows 98"],
           [2, 's2', "Tips for Macintosh Users"],
              [3, 's1', "Why does the mouse have two buttons?"]
  ].each{|depth, style, text|
    item = t.item_create
    t.item_style_set(item, 0, style)
    t.item_element_configure(item, 0, 'e3', :text=>text)
    if $Version_1_1_OrLater
      t.item_collapse(item)
    else # TreeCtrl 1.0
      t.collapse(item)
    end
    t.item_lastchild(parentList[depth], item)
    depth += 1
    parentList[depth] = item
  }

  treeCtrlHelp = TkBindTag.new

  treeCtrlHelp.bind('Double-ButtonPress-1',
                    proc{|w, x, y|
                      if w.identify(x, y)[0] == 'header'
                        Tk::TreeCtrl::BindCallback.doubleButton1(w, x, y)
                      else
                        helpButton1(w, x, y)
                      end
                      Tk.callback_break
                    }, '%W %x %y')

  treeCtrlHelp.bind('ButtonPress-1',
                    proc{|w, x, y|
                      helpButton1(w, x, y)
                      Tk.callback_break
                    }, '%W %x %y')

  treeCtrlHelp.bind('Button1-Motion',
                    proc{|w, x, y|
                      helpMotion1(w, x, y)
                      Tk.callback_break
                    }, '%W %x %y')

  treeCtrlHelp.bind('Button1-Leave',
                    proc{|w, x, y|
                      helpLeave1(w, x, y)
                      Tk.callback_break
                    }, '%W %x %y')

  treeCtrlHelp.bind('ButtonRelease-1',
                    proc{|w, x, y|
                      helpRelease1(w, x, y)
                      Tk.callback_break
                    }, '%W %x %y')

  treeCtrlHelp.bind('Motion', proc{|w, x, y| helpMotion(w, x, y) }, '%W %x %y')

  treeCtrlHelp.bind('Leave', proc{|w, x, y| helpMotion(w, x, y) }, '%W %x %y')

  treeCtrlHelp.bind('KeyPress-Return',
                    proc{|w, x, y|
                      if w.selection_get.length == 1
                        if $Version_1_1_OrLater
                          w.item_toggle(w.selection_get[0])
                        else # TreeCtrl 1.0
                          w.toggle(w.selection_get[0])
                        end
                      end
                      Tk.callback_break
                    }, '%W %x %y')

  @Priv[:help, :prev] = ''

  t.bindtags = [ t, treeCtrlHelp, Tk::TreeCtrl, t.winfo_toplevel, :all ]
end

#demoHelpContents2(t) ⇒ Object

This is an alternate implementation that does not define a new item state to change the appearance of the item under the cursor.



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# File 'sample/tkextlib/treectrl/help.rb', line 141

def demoHelpContents2(t)
  height = t.font.metrics(:linespace)
  height = 18 if height < 18
  t.configure(:showroot=>false, :showbuttons=>false, :showlines=>false,
              :itemheight=>height, :selectmode=>:browse)

  init_pics('help-*')

  if $Version_1_1_OrLater
    t.column_create(:text=>'Help Contents')
  else # TreeCtrl 1.0
    t.column_configure(0, :text=>'Help Contents')
  end

  t.element_create('e1', :image, :image=>@images['help-page'])
  t.element_create('e2', :image, :image=>[
                     @images['help-book-open'], ['open'],
                     @images['help-book-closed'], [],
                   ])
  t.element_create('e3', :text,
                   :fill=>[
                     @SystemHighlightText, ['selected', 'focus'],
                     'blue', []
                   ])
  t.element_create('e4', :rect, :showfocus=>true,
                   :fill=>[@SystemHighligh, ['selected', 'focus']])
  t.element_create('e5', :text, :font=>t.font.dup.underline(true),
                   :fill=>[
                     @SystemHighlightText, ['selected', 'focus'],
                     'blue', []
                   ])

  # book
  s = t.style_create('s1')
  t.style_elements(s, ['e4', 'e1', 'e3'])
  t.style_layout(s, 'e1', :padx=>[0,4], :expand=>:ns)
  t.style_layout(s, 'e3', :expand=>:ns)
  t.style_layout(s, 'e4', :union=>['e3'], :iexpand=>:ns, :ipadx=>2)

  # page
  s = t.style_create('s2')
  t.style_elements(s, ['e4', 'e2', 'e3'])
  t.style_layout(s, 'e2', :padx=>[0,4], :expand=>:ns)
  t.style_layout(s, 'e3', :expand=>:ns)
  t.style_layout(s, 'e4', :union=>['e3'], :iexpand=>:ns, :ipadx=>2)

  # book (focus)
  s = t.style_create('s1.f')
  t.style_elements(s, ['e4', 'e1', 'e5'])
  t.style_layout(s, 'e1', :padx=>[0,4], :expand=>:ns)
  t.style_layout(s, 'e5', :expand=>:ns)
  t.style_layout(s, 'e4', :union=>['e5'], :iexpand=>:ns, :ipadx=>2)

  # page (focus)
  s = t.style_create('s2')
  t.style_elements(s, ['e4', 'e2', 'e5'])
  t.style_layout(s, 'e2', :padx=>[0,4], :expand=>:ns)
  t.style_layout(s, 'e5', :expand=>:ns)
  t.style_layout(s, 'e4', :union=>['e5'], :iexpand=>:ns, :ipadx=>2)

  parentList = [:root, '', '', '', '', '', '']
  parent = :root
  [
     [0, 's1', "Welcome to Help"],
     [0, 's2', "Introducing Windows 98"],
        [1, 's2', "How to Use Help"],
           [2, 's1' "Find a topic"],
           [2, 's1', "Get more out of help"],
        [1, 's2', "Register Your Software"],
           [2, 's1', "Registering Windows 98 online"],
        [1, 's2', "What's New in Windows 98"],
           [2, 's1', "Innovative, easy-to-use features"],
           [2, 's1', "Improved reliability"],
           [2, 's1', "A faster operating system"],
           [2, 's1', "True Web integration"],
           [2, 's1', "More entertaining and fun"],
        [1, 's2', "If You're New to Windows 98"],
           [2, 's2', "Tips for Macintosh Users"],
              [3, 's1', "Why does the mouse have two buttons?"]
  ].each{|depth, style, text|
    item = t.item_create
    t.item_style_set(item, 0, style)
    t.item_element_configure(item, 0, 'e3', :text=>text)
    if $Version_1_1_OrLater
      t.item_collapse(item)
    else # TreeCtrl 1.0
      t.collapse(item)
    end
    t.item_lastchild(parentList[depth], item)
    depth += 1
    parentList[depth] = item
  }

  treeCtrlHelp = TkBindTag.new

  treeCtrlHelp.bind('Double-ButtonPress-1',
                    proc{|w, x, y|
                      if w.identify(x, y)[0] == 'header'
                        Tk::TreeCtrl::BindCallback.doubleButton1(w, x, y)
                      else
                        helpButton1(w, x, y)
                      end
                      Tk.callback_break
                    }, '%W %x %y')

  treeCtrlHelp.bind('ButtonPress-1',
                    proc{|w, x, y|
                      helpButton1(w, x, y)
                      Tk.callback_break
                    }, '%W %x %y')

  treeCtrlHelp.bind('Button1-Motion',
                    proc{|w, x, y|
                      helpMotion1(w, x, y)
                      Tk.callback_break
                    }, '%W %x %y')

  treeCtrlHelp.bind('Button1-Leave',
                    proc{|w, x, y|
                      helpLeave1(w, x, y)
                      Tk.callback_break
                    }, '%W %x %y')

  treeCtrlHelp.bind('ButtonRelease-1',
                    proc{|w, x, y|
                      helpRelease1(w, x, y)
                      Tk.callback_break
                    }, '%W %x %y')

  treeCtrlHelp.bind('Motion', proc{|w, x, y| helpMotion(w, x, y) }, '%W %x %y')

  treeCtrlHelp.bind('Leave', proc{|w, x, y| helpMotion(w, x, y) }, '%W %x %y')

  treeCtrlHelp.bind('KeyPress-Return',
                    proc{|w, x, y|
                      if w.selection_get.length == 1
                        w.item_toggle(w.selection_get[0])
                      end
                      Tk.callback_break
                    }, '%W %x %y')

  @Priv[:help, :prev] = ''

  t.bindtags = [ t, treeCtrlHelp, Tk::TreeCtrl, t.winfo_toplevel, :all ]
end

#demoIMovie(t) ⇒ Object

Demo: iMovie



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# File 'sample/tkextlib/treectrl/imovie.rb', line 4

def demoIMovie(t)
  t.configure(:showroot=>false, :showbuttons=>false, :showlines=>false,
              :selectmode=>:browse, :orient=>:horizontal, :wrap=>:window,
              :showheader=>false, :background=>'#dcdcdc')

  if $HasColumnCreate
    t.column_create
  end

  init_pics('imovie-*')

  case @thisPlatform
  when 'macintosh', 'macosx'
    font1 = TkFont.new(['Geneva', 9])
    font2 = TkFont.new(['Geneva', 10])
  when 'unix'
    font1 = TkFont.new(['Helvetica', -12])
    font2 = TkFont.new(['Helvetica', -14])
  else
    font1 = TkFont.new(['Helvetica', 8])
    font2 = TkFont.new(['Helvetica', 10])
  end

  t.element_create('elemTime', :text, :font=>font1)
  t.element_create('elemName', :text, :font=>font2, :lines=>1, :width=>80)
  t.element_create('elemRect', :rect, :outline=>'#827878', :outlinewidth=>1,
                   :fill=>['#ffdc5a', ['selected'], 'white', []])
  t.element_create('elemImg', :image)
  t.element_create('elemShadow', :rect, :outline=>'gray', :outlinewidth=>1,
                   :open=>:wn)

  s = t.style_create('STYLE', :orient=>:vertical)
  t.style_elements(s, [
                     'elemShadow', 'elemRect', 'elemTime',
                     'elemImg', 'elemName'
                   ])
  t.style_layout(s, 'elemShadow', :detach=>true,
                 :padx=>[1,2], :pady=>[1,2], :iexpand=>:es)
  t.style_layout(s, 'elemTime', :padx=>[2,0])
  t.style_layout(s, 'elemImg', :pady=>[0,1])
  t.style_layout(s, 'elemName', :expand=>:we, :ipady=>[0,2], :padx=>[0,3],
                 :squeeze=>:x)
  t.style_layout(s, 'elemRect', :union=>['elemTime', 'elemImg', 'elemName'],
                 :ipadx=>6, :padx=>[0,3], :pady=>[0,3])

  # Set default item style
  if $Version_1_1_OrLater
    t.defaultstyle([s])
  end

  (0..4).each{|i|
    [
      ['15:20', 'Clip 1', @images['imovie-01']],
      ['19:18', 'Clip 2', @images['imovie-02']],
      ['07:20', 'Clip 3', @images['imovie-03']],
      ['07:20', 'Clip 4', @images['imovie-04']],
      ['07:20', 'Clip 5', @images['imovie-05']],
      ['07:20', 'Clip 6', @images['imovie-06']],
      ['07:20', 'Clip 7', @images['imovie-07']]
    ].each{|time, name, image|
      item = t.item_create
      unless $Version_1_1_OrLater
        t.item_style_set(item, 0, s)
      end
      t.item_element_configure(item, 0, 'elemTime', :text=>time)
      t.item_element_configure(item, 0, 'elemName', :text=>name)
      t.item_element_configure(item, 0, 'elemImg', :image=>image)
      t.item_lastchild(:root, item)
    }
  }

  t.notify_bind(t, 'Edit-accept', proc{|w, i, c, e, tt|
                  w.item_element_configure(i, c, e, :text=>tt)
                }, '%T %I %C %E %t')

  iMovie = TkBindTag.new
  iMovie.bind('ButtonPress-1', proc{|w, x, y|
                iMovieButton1(w, x, y)
              }, '%W %x %y')

  t.bindtags = [t, iMovie, Tk::TreeCtrl, t.winfo_toplevel, TkBindTag::ALL]
end

#demoInternetOptions(t) ⇒ Object 



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# File 'sample/tkextlib/treectrl/www-options.rb', line 1

def demoInternetOptions (t)
  @Option = TkVarAccess.new_hash('::Option')

  height = t.font.metrics(:linespace) + 2
  height = 18 if height < 18
  t.configure(:showroot=>false, :showbuttons=>false, :showlines=>false,
              :itemheight=>height, :selectmode=>:browse)

  init_pics('internet-*')

  if $HasColumnCreate
    t.column_create(:text=>'Internet Options')
  else
    t.column_configure(0, :text=>'Internet Options')
  end

  t.state_define('check')
  t.state_define('radio')
  t.state_define('on')

  t.element_create('e1', :image, :image=>[
                     @images['internet-check-on'],  ['check', 'on'],
                     @images['internet-check-off'], ['check'],
                     @images['internet-radio-on'],  ['radio', 'on'],
                     @images['internet-radio-off'], ['radio']
                   ])
  t.element_create('e2', :text,
                   :fill=>[@SystemHighlightText, ['selected', 'focus']])
  t.element_create('e3', :rect, :showfocus=>true,
                   :fill=>[@SystemHighlight, ['selected', 'focus']])

  s = t.style_create('s1')
  t.style_elements(s, ['e3', 'e1', 'e2'])
  t.style_layout(s, 'e1', :padx=>[0,4], :expand=>:ns)
  t.style_layout(s, 'e2', :expand=>:ns)
  t.style_layout(s, 'e3', :union=>['e2'], :iexpand=>:ns, :ipadx=>2)

  parentList = [:root, '', '', '', '', '', '']
  parent = :root
  [
    [0, :print, "Printing", "", ""],
        [1, :off, "Print background colors and images", "o1", ""],
    [0, :search, "Search from Address bar", "", ""],
        [1, :search, "When searching", "", ""],
            [2, :off, "Display results, and go to the most likely sites",
                                                                 "o2", "r1"],
            [2, :off, "Do not search from the Address bar", "o3", "r1"],
            [2, :off, "Just display the results in the main window",
                                                                 "o4", "r1"],
            [2, :on, "Just go to the most likely site", "o5", "r1"],
    [0, :security, "Security", "", ""],
        [1, :on, "Check for publisher's certificate revocation", "o5", ""],
        [1, :off, "Check for server certificate revocation (requires restart)",
                                                                 "o6", ""]
  ].each{|depth, setting, text, option, group|
    item = t.item_create()
    t.item_style_set(item, 0, 's1')
    t.item_element_configure(item, 0, 'e2', :text=>text)
    @Option[:option, item] = option
    @Option[:group, item] = group
    if setting == :on || setting == :off
      @Option[:setting, item] = setting
      if group == ''
        t.item_state_set(item, 'check')
        if setting == :on
          t.item_state_set(item, 'on')
        end
      else
        if setting == :on
          @Option[:current, group] = item
          t.item_state_set(item, 'on')
        end
        t.item_state_set(item, 'radio')
      end
    else
      t.item_element_configure(item, 0, 'e1',
                               :image=>@images["internet-#{setting}"])
    end
    t.item_lastchild(parentList[depth], item)
    depth += 1
    parentList[depth] = item
  }

  treeCtrlOption = TkBindTag.new
  treeCtrlOption.bind('Double-ButtonPress-1', proc{|w, x, y|
                        Tk::TreeCtrl::BindCallback.doubleButton1(w, x, y)
                      }, '%W %x %y')
  treeCtrlOption.bind('ButtonPress-1', proc{|w, x, y|
                        optionButton1(w, x, y)
                        Tk.callback_break
                      }, '%W %x %y')
  treeCtrlOption.bind('Button1-Motion', proc{|w, x, y|
                        optionMotion1(w, x, y)
                        Tk.callback_break
                      }, '%W %x %y')
  treeCtrlOption.bind('Button1-Leave', proc{|w, x, y|
                        optionLeave1(w, x, y)
                        Tk.callback_break
                      }, '%W %x %y')
  treeCtrlOption.bind('ButtonRelease-1', proc{|w, x, y|
                        optionRelease1(w, x, y)
                        Tk.callback_break
                      }, '%W %x %y')

  t.bindtags = [
    t, treeCtrlOption, Tk::TreeCtrl, t.winfo_toplevel, TkBindTag::ALL
  ]
end

#demoInternetOptions_2(t) ⇒ Object

Alternate implementation that doesn’t rely on run-time styles



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# File 'sample/tkextlib/treectrl/www-options.rb', line 146

def demoInternetOptions_2(t)
  height = t.font.metrics(:linespace) + 2
  height = 18 if height < 18
  t.configure(:showroot=>false, :showbuttons=>false, :showlines=>false,
              :itemheight=>height, :selectmode=>:browse)

  init_pics('internet-*')

  t.column_configure(0, :text=>'Internet Options')

  t.element_create('e1', :image)
  t.element_create('e2', :text,
                   :fill=>[@SystemHighlightText, ['selected', 'focus']])
  t.element_create('e3', :rect, :showfocus=>true,
                   :fill=>[@SystemHighlight, ['selected', 'focus']])

  s = t.style_create('s1')
  t.style_elements('s1', ['e3', 'e1', 'e2'])
  t.style_layout(s, 'e1', :padx=>[0,4], :expand=>:ns)
  t.style_layout(s, 'e2', :expand=>:ns)
  t.style_layout(s, 'e3', :union=>['e2'], :iexpand=>:ns, :ipadx=>2)

  parentList = [:root, '', '', '', '', '', '']
  parent = :root
  [
    [0, :print, "Printing", "", ""],
        [1, :off, "Print background colors and images", "o1", ""],
    [0, :search, "Search from Address bar", "", ""],
        [1, :search, "When searching", "", ""],
            [2, :off, "Display results, and go to the most likely sites",
                                                                 "o2", "r1"],
            [2, :off, "Do not search from the Address bar", "o3", "r1"],
            [2, :off, "Just display the results in the main window",
                                                                 "o4", "r1"],
            [2, :on, "Just go to the most likely site", "o5", "r1"],
    [0, :security, "Security", "", ""],
        [1, :on, "Check for publisher's certificate revocation", "o5", ""],
        [1, :off, "Check for server certificate revocation (requires restart)",
                                                                 "o6", ""]
  ].each{|depth, setting, text, option, group|
    item = t.item_create()
    t.item_style_set(item, 0, 's1')
    t.item_element_configure(item, 0, 'e2', :text=>text)
    @Option[:option, item] = option
    @Option[:group, item] = group
    if setting == :on || setting == :off
      @Option[:setting, item] = setting
      if group == ''
        img = @images["internet-check-#{setting}"]
        t.item_element_configure(item, 0, 'e1', :image=>img)
      else
        if setting == :on
          @Option[:current, group] = item
        end
        img = @images["internet-radio-#{setting}"]
        t.item_element_configure(item, 0, 'e1', :image=>img)
      end
    else
      t.item_element_configure(item, 0, 'e1',
                               :image=>@images["internet-#{setting}"])
    end
    t.item_lastchild(parentList[depth], item)
    depth += 1
    parentList[depth] = item
  }

  treeCtrlOption = TkBindTag.new
  treeCtrlOption.bind('Double-ButtonPress-1', proc{|w, x, y|
                        Tk::TreeCtrl::BindCallback.doubleButton1(w, x, y)
                      }, '%W %x %y')
  treeCtrlOption.bind('ButtonPress-1', proc{|w, x, y|
                        optionButton1(w, x, y)
                        Tk.callback_break
                      }, '%W %x %y')
  treeCtrlOption.bind('Button1-Motion', proc{|w, x, y|
                        optionMotion1(w, x, y)
                        Tk.callback_break
                      }, '%W %x %y')
  treeCtrlOption.bind('Button1-Leave', proc{|w, x, y|
                        optionLeave1(w, x, y)
                        Tk.callback_break
                      }, '%W %x %y')
  treeCtrlOption.bind('ButtonRelease-1', proc{|w, x, y|
                        optionRelease1(w, x, y)
                        Tk.callback_break
                      }, '%W %x %y')

  t.bindtags = [
    t, treeCtrlOption, Tk::TreeCtrl, t.winfo_toplevel, TkBindTag::ALL
  ]
end

#demoLayout(t) ⇒ Object

Demo: Layout



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# File 'sample/tkextlib/treectrl/layout.rb', line 4

def demoLayout(t)
  t.configure(:showroot=>false, :showrootbutton=>true, :showbuttons=>true,
              :showlines=>true, :itemheight=>0, :selectmode=>:browse)

  if $HasColumnCreate
    t.column_create(:text=>'Layout')
  else
    t.column_configure(0, :text=>'Layout')
  end

  t.element_create('e1', :rect, :width=>30, :height=>30, :fill=>'gray20')
  t.element_create('e2', :rect, :width=>30, :height=>30, :fill=>'gray40',
                   :outline=>'blue', :outlinewidth=>3)
  t.element_create('e3', :rect, :fill=>'gray60')
  t.element_create('e4', :rect, :showfocus=>true,
                   :fill=>[
                     @SystemHighlight, ['selected', 'focus'], 'gray80', []
                   ])
  t.element_create('e5', :rect, :fill=>'{sky blue}', :width=>20, :height=>20)
  t.element_create('e6', :rect, :fill=>'{sea green}', :width=>30, :height=>16)
  t.element_create('e7', :rect, :fill=>'{sky blue}', :width=>30, :height=>16)
  t.element_create('e8', :rect, :fill=>'gray70', :height=>1)

  s = t.style_create('s1')
  t.style_elements(s, ['e4', 'e3', 'e1', 'e2', 'e5', 'e6', 'e7'])
  t.style_layout(s, 'e1', :padx=>[28, 4], :pady=>4)
  t.style_layout(s, 'e2', :expand=>:es, :padx=>[0, 38])
  t.style_layout(s, 'e3', :union=>['e1', 'e2'], :ipadx=>4, :ipady=>4, :pady=>2)
  t.style_layout(s, 'e4', :detach=>true, :iexpand=>:es)
  t.style_layout(s, 'e5', :detach=>true, :padx=>[2,0], :pady=>2, :iexpand=>:s)
  t.style_layout(s, 'e6', :detach=>true, :expand=>:ws,
                 :padx=>[0,2], :pady=>[2,0])
  t.style_layout(s, 'e7', :detach=>true, :expand=>:wn,
                 :padx=>[0,2], :pady=>[0,2])

  if $Version_1_1_OrLater
    i = t.item_create(:button=>true)
  else
    i = t.item_create
    t.item_hasbutton(i, true)
  end
  t.item_style_set(i, 0, s)
  t.item_lastchild(:root, i)
  parent = i

  i = t.item_create()
  unless $Version_1_1_OrLater
    t.item_hasbutton(i, false)
  end
  t.item_style_set(i, 0, s)
  t.item_lastchild(parent, i)

  ###

  s = t.style_create('s2')
  t.style_elements(s, ['e4', 'e3', 'e1'])
  t.style_layout(s, 'e1', :padx=>8, :pady=>8, :iexpand=>:e)
  t.style_layout(s, 'e3', :union=>['e1'], :ipadx=>[20,4], :ipady=>[4,12])
  t.style_layout(s, 'e4', :detach=>true, :iexpand=>:es)

  if $Version_1_1_OrLater
    i = t.item_create(:button=>true)
  else
    i = t.item_create
    t.item_hasbutton(i, true)
  end
  t.item_style_set(i, 0, s)
  t.item_lastchild(:root, i)

  i2 = t.item_create()
  unless $Version_1_1_OrLater
    t.item_hasbutton(i2, false)
  end
  t.item_style_set(i2, 0, s)
  t.item_lastchild(i, i2)

  ###

  s = t.style_create('s3')
  t.style_elements(s, ['e4', 'e3', 'e1', 'e5', 'e6'])
  t.style_layout(s, 'e4', :union=>['e1', 'e6'], :ipadx=>8, :ipady=>[8,0])
  t.style_layout(s, 'e3', :union=>['e1', 'e5'], :ipadx=>4, :ipady=>4)
  t.style_layout(s, 'e5', :ipady=>[0,20])

  if $Version_1_1_OrLater
    i = t.item_create(:button=>true)
  else
    i = t.item_create
    t.item_hasbutton(i, true)
  end
  t.item_style_set(i, 0, s)
  t.item_lastchild(:root, i)

  i2 = t.item_create()
  unless $Version_1_1_OrLater
    t.item_hasbutton(i2, false)
  end
  t.item_style_set(i2, 0, s)
  t.item_lastchild(i, i2)

  ###

  t.element_create('eb', :border, :background=>@SystemButtonFace,
                   :relief=>[:sunken, ['selected'], :raised, []],
                   :thickness=>2, :filled=>true)
  t.element_create('et', :text)

  text = "Here is a text element surrounded by a border element.\nResize the column to watch me wrap."

  s = t.style_create('e4')
  t.style_elements(s, ['eb', 'et'])
  t.style_layout(s, 'eb', :union=>['et'], :ipadx=>2, :ipady=>2)
  t.style_layout(s, 'et', :squeeze=>:x)

  if $Version_1_1_OrLater
    i = t.item_create(:button=>true)
  else
    i = t.item_create
    t.item_hasbutton(i, true)
  end
  t.item_style_set(i, 0, s)
  t.item_text(i, 0, text)
  t.item_lastchild(:root, i)
  parent = i

  i = t.item_create()
  unless $Version_1_1_OrLater
    t.item_hasbutton(i, false)
  end
  t.item_style_set(i, 0, s)
  t.item_text(i, 0, text)
  t.item_lastchild(parent, i)

  ###

  styleNum = 5
  [
    [:horizontal, [:s, :ns, :n]],
    [:vertical,   [:e, :we, :w]]
  ].each{|orient, expandList|
    expandList.each{|expand|
      s = t.style_create("s#{styleNum}", :orient=>orient)
      t.style_elements(s, ['e4', 'e8', 'e2', 'e5', 'e6'])
      t.style_layout(s, 'e4', :detach=>true, :iexpand=>:es)
      t.style_layout(s, 'e8', :detach=>true, :expand=>:n, :iexpand=>:e)
      t.style_layout(s, 'e2', :expand=>expand)
      t.style_layout(s, 'e5', :expand=>expand)
      t.style_layout(s, 'e6', :expand=>expand)
      styleNum += 1

      i = t.item_create()
      t.item_style_set(i, 0, s)
      t.item_lastchild(:root, i)
    }
  }
end

#demoMailWasher(t) ⇒ Object

Demo: MailWasher



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# File 'sample/tkextlib/treectrl/mailwasher.rb', line 4

def demoMailWasher(t)
  init_pics('*checked')

  height = t.font.metrics(:linespace) + 2
  height = 18 if height < 18

  t.configure(:showroot=>false, :showrootbutton=>false, :showbuttons=>false,
              :showlines=>false, :itemheight=>height, :selectmode=>:browse,
              :xscrollincrement=>1)

  pad = 4

  if $Version_1_1_OrLater
    t.column_create(:text=>'Delete', :textpadx=>pad, :tag=>'delete')
    t.column_create(:text=>'Bounce', :textpadx=>pad, :tag=>'bounce')
    t.column_create(:text=>'Status', :width=>80, :textpadx=>pad,
                    :tag=>'status')
    t.column_create(:text=>'Size', :width=>40, :textpadx=>pad,
                    :justify=>:right, :tag=>'size')
    t.column_create(:text=>'From', :width=>140, :textpadx=>pad, :tag=>'from')
    t.column_create(:text=>'Subject', :width=>240, :textpadx=>pad,
                    :tag=>'subject')
    t.column_create(:text=>'Received', :textpadx=>pad, :arrow=>:up,
                    :arrowpad=>[4,0], :tag=>'received')
    t.column_create(:text=>'Attachments', :textpadx=>pad, :tag=>'attachments')

    t.state_define('CHECK')

    t.element_create('imgCheck', :image, :image=>[
                       @images['checked'], ['CHECK'], @images['unchecked'], []
                     ])

  else # TreeCtrl 1.0
    t.column_configure(0, :text=>'Delete', :textpadx=>pad, :tag=>'delete')
    t.column_configure(1, :text=>'Bounce', :textpadx=>pad, :tag=>'bounce')
    t.column_configure(2, :text=>'Status', :width=>80, :textpadx=>pad,
                       :tag=>'status')
    t.column_configure(3, :text=>'Size', :width=>40, :textpadx=>pad,
                       :justify=>:right, :tag=>'size')
    t.column_configure(4, :text=>'From', :width=>140, :textpadx=>pad,
                       :tag=>'from')
    t.column_configure(5, :text=>'Subject', :width=>240, :textpadx=>pad,
                       :tag=>'subject')
    t.column_configure(6, :text=>'Received', :textpadx=>pad, :arrow=>:up,
                       :arrowpad=>[4,0], :tag=>'received')
    t.column_configure(7, :text=>'Attachments', :textpadx=>pad,
                       :tag=>'attachments')

    t.element_create('imgOff', :image, :image=>@images['unchecked'])
    t.element_create('imgOn', :image, :image=>@images['checked'])
  end

  t.element_create('border', :rect, :open=>:nw, :outline=>'gray',
                   :outlinewidth=>1, :fill=>[@SystemHighlight, ['selected']])
  t.element_create('txtAny', :text, :lines=>1,
                   :fill=>[@SystemHighlightText, ['selected']])
  t.element_create('txtNone', :text, :text=>'none', :lines=>1,
                   :fill=>[@SystemHighlightText, ['selected']])
  t.element_create('txtYes', :text, :text=>'yes', :lines=>1,
                   :fill=>[@SystemHighlightText, ['selected']])
  t.element_create('txtNormal', :text, :text=>'Normal', :lines=>1,
                   :fill=>[@SystemHighlightText, ['selected'], '#006800', []])
  t.element_create('txtPossSpam', :text, :text=>'Possible Spam', :lines=>1,
                   :fill=>[@SystemHighlightText, ['selected'], '#787800', []])
  t.element_create('txtProbSpam', :text, :text=>'Probably Spam', :lines=>1,
                   :fill=>[@SystemHighlightText, ['selected'], '#FF9000', []])
  t.element_create('txtBlacklist', :text, :text=>'Blacklisted', :lines=>1,
                   :fill=>[@SystemHighlightText, ['selected'], '#FF5800', []])

  if $Version_1_1_OrLater
    s = t.style_create('styCheck')
    t.style_elements(s, ['border', 'imgCheck'])
    t.style_layout(s, 'border', :detach=>true, :iexpand=>:es)
    t.style_layout(s, 'imgCheck', :expand=>:news)
  else
    ['Off', 'On'].each{|name|
      s = t.style_create('sty' << name)
      i = 'img' << name
      t.style_elements(s, ['border', i])
      t.style_layout(s, 'border', :detach=>true, :iexpand=>:es)
      t.style_layout(s, i, :expand=>:news)
    }
  end

  pad = 4

  %w(Any None Yes Normal PossSpam ProbSpam Blacklist).each{|name|
    s = t.style_create('sty' << name)
    e = 'txt' << name
    t.style_elements(s, ['border', e])
    t.style_layout(s, 'border', :detach=>true, :iexpand=>:es)
    t.style_layout(s, e, :padx=>pad, :squeeze=>:x, :expand=>:ns)
  }

  [
    ['[email protected]',  "Your hair is thinning"],
    ['[email protected]', "Your breasts are too small"],
    ['[email protected]',  "Your penis is too small"],
    ['[email protected]', "You are not very smart"],
    ['[email protected]', "You need more money"],
    ['[email protected]', "You need better friends"],
    ['[email protected]', "Find out what your coworkers think about you"],
    ['[email protected]', "Find out what you think about yourself"],
    ['[email protected]', "You need a better job"],
    ['[email protected]', "Your mortgage is a joke"],
    ['[email protected]', "You need more spam"]
  ].each{|frm, subj|
    item = t.item_create
    status = ['styNormal','styPossSpam','styProbSpam','styBlacklist'][rand(4)]
    attachments = ['styNone','styYes'][rand(2)]

    if $Version_1_1_OrLater
      delete = [false, true][rand(2)]
      bounce = [false, true][rand(2)]
      t.item_style_set(item,
                       0, 'styCheck', 1, 'styCheck', 2, status, 3, 'styAny',
                       4, 'styAny', 5, 'styAny', 6, 'styAny', 7, attachments)
      t.item_state_forcolumn(item, 'delete', 'CHECK') if delete
      t.item_state_forcolumn(item, 'bounce', 'CHECK') if bounce

    else # TreeCtrl 1.0
      delete = ['styOn', 'styOff'][rand(2)]
      bounce = ['styOn', 'styOff'][rand(2)]
      t.item_style_set(item,
                       0, delete, 1, bounce, 2, status, 3, 'styAny',
                       4, 'styAny', 5, 'styAny', 6, 'styAny', 7, attachments)
    end

    bytes = 512 + rand(1024 * 12)
    size = "#{bytes / 1024 + 1}KB"
    seconds = Tk::Clock.seconds - rand(100000)
    received = Tk::Clock.format(seconds, '%d/%m/%y %I:%M %p')
    t.item_text(item, 3, size, 4, frm, 5, subj, 6, received)
    t.item_lastchild(:root, item)
  }

  sortColumn = 6
  t.notify_bind(t, 'Header-invoke',
                proc{|c, w|
                  if c == sortColumn
                    if w.column_cget(sortColumn, :arrow) == 'down'
                      order = :increasing
                      arrow = :up
                    else
                      order = :decreasing
                      arrow = :down
                    end
                  else
                    if w.column_cget(sortColumn, :arrow) == 'down'
                      order = :decreasing
                      arrow = :down
                    else
                      order = :increasing
                      arrow = :up
                    end
                    w.column_configure(sortColumn, :arrow=>:none)
                    sortColumn = c
                  end
                  w.column_configure(c, :arrow=>arrow)
                  case w.column_cget(c, :tag)
                  when 'bounce', 'delete'
                    w.item_sort(:root, order,
                                {
                                  :column=>c,
                                  :command=>proc{|item1, item2|
                                    compareOnOff(w, c, item1, item2)
                                  }
                                },
                                { :column=>'subject', :dictionary=>true })
                  when 'status'
                    w.item_sort(:root, order,
                                { :column=>c, :dictionary=>true })
                  when 'from'
                    w.item_sort(:root, order,
                                { :column=>c, :dictionary=>true },
                                { :column=>'subject', :dictionary=>true })
                  when 'subject'
                    w.item_sort(:root, order,
                                { :column=>c, :dictionary=>true })
                  when 'size'
                    w.item_sort(:root, order,
                                { :column=>c, :dictionary=>true },
                                { :column=>'subject', :dictionary=>true })
                  when 'received'
                    w.item_sort(:root, order,
                                { :column=>c, :dictionary=>true },
                                { :column=>'subject', :dictionary=>true })
                  when 'attachments'
                    w.item_sort(:root, order,
                                { :column=>c, :dictionary=>true },
                                { :column=>'subject', :dictionary=>true })
                  end
                }, '%C %T')

  mailWasher = TkBindTag.new

  if $Version_1_1_OrLater
    mailWasher.bind('ButtonPress-1',
                    proc{|w, x, y|
                      id = w.identify(x, y)
                      if id.empty?
                      elsif id[0] == 'header'
                      else
                        what, item, where, arg1, arg2, arg3 = id
                        if where == 'column'
                          tag = w.column_cget(arg1, :tag)
                          if tag == 'delete' || tag == 'bounce'
                            w.item_state_forcolumn(item, arg1, '~CHECK')
                          end
                        end
                      end
                    }, '%W %x %y')
  else # TreeCtrl 1.0
    mailWasher.bind('ButtonPress-1',
                    proc{|w, x, y|
                      id = w.identify(x, y)
                      if id.empty?
                      elsif id[0] == 'header'
                      else
                        what, item, where, arg1, arg2, arg3 = id
                        if where == 'column'
                          tag = w.column_cget(arg1, :tag)
                          if tag == 'delete' || tag == 'bounce'
                            style = w.item_style_set(item, arg1)
                            if style == 'styOn'
                              style = 'styOff'
                            else
                              style = 'styOn'
                            end
                            w.item_style_set(item, arg1, style)
                            @display_styles_in_item.call(item)
                          end
                        end
                      end
                    }, '%W %x %y')
  end

  t.bindtags = [t, mailWasher, Tk::TreeCtrl, t.winfo_toplevel, TkBindTag::ALL]
end

#demoOutlookFolders(t) ⇒ Object

Demo: Outlook Express folder list



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# File 'sample/tkextlib/treectrl/outlook-folders.rb', line 4

def demoOutlookFolders(t)
  init_pics('outlook-*')

  height = t.font.metrics(:linespace) + 2
  height = 18 if height < 18

  t.configure(:itemheight=>height, :selectmode=>:browse, :showlines=>true,
              :showroot=>true, :showrootbutton=>false, :showbuttons=>true)

  if $HasColumnCreate
    t.column_create(:text=>'Folders')
  else
    t.column_configure(0, :text=>'Folders')
  end

  t.element_create('e1', :image)
  t.element_create('e2', :text, :lines=>1,
                   :fill=>[@SystemHighlightText, ['selected', 'focus']])
  t.element_create('e3', :text, :lines=>1, :font=>t.font.dup.weight(:bold),
                   :fill=>[@SystemHighlightText, ['selected', 'focus']])
  t.element_create('e4', :text, :fill=>'blue')
  t.element_create('e5', :image, :image=>@images['outlook-folder'])
  t.element_create('e6', :rect, :showfocus=>true,
                   :fill=>[
                     @SystemHighlight, ['selected', 'focus'],
                     'gray', ['selected', '!focus']
                   ])

  # image + text
  s = t.style_create('s1')
  t.style_elements(s, ['e6', 'e1', 'e2'])
  t.style_layout(s, 'e1', :expand=>:ns)
  t.style_layout(s, 'e2', :padx=>[4,0], :expand=>:ns, :squeeze=>:x)
  t.style_layout(s, 'e6', :union=>['e2'], :iexpand=>:ns, :ipadx=>2)

  # image + text + text
  s = t.style_create('s2')
  t.style_elements(s, ['e6', 'e1', 'e3', 'e4'])
  t.style_layout(s, 'e1', :expand=>:ns)
  t.style_layout(s, 'e3', :padx=>4, :expand=>:ns, :squeeze=>:x)
  t.style_layout(s, 'e4', :expand=>:ns)
  t.style_layout(s, 'e6', :union=>['e3'], :iexpand=>:ns, :ipadx=>2)

  # folder + text
  s = t.style_create('s3')
  t.style_elements(s, ['e6', 'e5', 'e2'])
  t.style_layout(s, 'e5', :expand=>:ns)
  t.style_layout(s, 'e2', :padx=>[4,0], :expand=>:ns, :squeeze=>:x)
  t.style_layout(s, 'e6', :union=>['e2'], :iexpand=>:ns, :ipadx=>2)

  # folder + text + text
  s = t.style_create('s4')
  t.style_elements(s, ['e6', 'e5', 'e3', 'e4'])
  t.style_layout(s, 'e5', :expand=>:ns)
  t.style_layout(s, 'e3', :padx=>4, :expand=>:ns, :squeeze=>:x)
  t.style_layout(s, 'e4', :expand=>:ns)
  t.style_layout(s, 'e6', :union=>['e3'], :iexpand=>:ns, :ipadx=>2)

  t.item_style_set(:root, 0, 's1')
  t.item_complex(:root,
                 [
                   ['e1', {:image=>@images['outlook-main']}],
                   ['e2', {:text=>'Outlook Express'}]
                 ])

  parentList = [:root, '', '', '', '', '', '']
  parent = :root
  [
     [0, :local, "Local Folders", true, 0],
        [1, :inbox, 'Inbox', false, 5],
        [1, :outbox, 'Outbox', false, 0],
        [1, :sent, "Sent Items", false, 0],
        [1, :deleted, "Deleted Items", false, 50],
        [1, :draft, 'Drafts', false, 0],
        [1, :folder, "Messages to Dad", false, 0],
        [1, :folder, "Messages to Sis", false, 0],
        [1, :folder, "Messages to Me", false, 0],
           [2, :folder, "2001", false, 0],
           [2, :folder, "2000", false, 0],
           [2, :folder, "1999", false, 0],
     [0, :server, "news.gmane.org", true, 0],
        [1, :group, "gmane.comp.lang.lua.general", false, 498]
  ].each{|depth, img, text, button, unread|
    if $Version_1_1_OrLater
      item = t.item_create(:button=>button)
    else
      item = t.item_create
      t.item_hasbutton(item, button)
    end
    if img == :folder
      if unread != 0
        t.item_style_set(item, 0, 's4')
        t.item_complex(item,
                       [['e3', {:text=>text}], ['e4', {:text=>"(#{unread})"}]])
      else
        t.item_style_set(item, 0, 's3')
        t.item_complex(item, [['e2', {:text=>text}]])
      end
    else
      if unread != 0
        t.item_style_set(item, 0, 's2')
        t.item_complex(item,
                       [
                         ['e1', {:image=>@images["outlook-#{img}"]}],
                         ['e3', {:text=>text}],
                         ['e4', {:text=>"(#{unread})"}]
                       ])
      else
        t.item_style_set(item, 0, 's1')
        t.item_complex(item,
                       [
                         ['e1', {:image=>@images["outlook-#{img}"]}],
                         ['e2', {:text=>text}]
                       ])
      end
    end
    t.item_lastchild(parentList[depth], item)
    depth += 1
    parentList[depth] = item
  }
end

#demoOutlookNewsgroup(t) ⇒ Object

Demo: Outlook Express newsgroup messages



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# File 'sample/tkextlib/treectrl/outlook-newgroup.rb', line 4

def demoOutlookNewsgroup(t)
  init_pics('outlook-*')

  height = t.font.metrics(:linespace)
  height = 18 if height < 18
  t.configure(:itemheight=>height, :selectmode=>:browse, :showlines=>false,
              :showroot=>false, :showrootbutton=>false, :showbuttons=>true)

  if $Version_1_1_OrLater
    t.column_create(:image=>@images['outlook-clip'], :tag=>'clip')
    t.column_create(:image=>@images['outlook-arrow'], :tag=>'arrow')
    t.column_create(:image=>@images['outlook-watch'], :tag=>'watch')
    t.column_create(:text=>'Subject', :width=>250, :tag=>'subject')
    t.column_create(:text=>'From', :width=>150, :tag=>'from')
    t.column_create(:text=>'Sent', :width=>150, :tag=>'sent')
    t.column_create(:text=>'Size', :width=>60, :justify=>:right, :tag=>'size')
  else # TreeCtrl 1.0
    t.column_configure(0, :image=>@images['outlook-clip'], :tag=>'clip')
    t.column_configure(1, :image=>@images['outlook-arrow'], :tag=>'arrow')
    t.column_configure(2, :image=>@images['outlook-watch'], :tag=>'watch')
    t.column_configure(3, :text=>'Subject', :width=>250, :tag=>'subject')
    t.column_configure(4, :text=>'From', :width=>150, :tag=>'from')
    t.column_configure(5, :text=>'Sent', :width=>150, :tag=>'sent')
    t.column_configure(6, :text=>'Size', :width=>60, :justify=>:right,
                       :tag=>'size')
  end

  # Would be nice if I could specify a column -tag too
  t.treecolumn = 3

  # State for a read message
  t.state_define('read')

  # State for a message with unread descendants
  t.state_define('unread')

  t.element_create('elemImg', :image,
                   :image=>[
                     @sel_images['outlook-read-2'],
                          ['selected', 'read', 'unread', '!open'],
                     @images['outlook-read-2'], ['read', 'unread', '!open'],
                     @sel_images['outlook-read'], ['selected', 'read'],
                     @images['outlook-read'], ['read'],
                     @sel_images['outlook-unread'], ['selected'],
                     @images['outlook-unread'], []
                   ])
  t.element_create('elemTxt', :text, :lines=>1,
                   :fill=>[@SystemHighlightText, ['selected', 'focus']],
                   :font=>[
                     t.font.dup.weight(:bold), ['read', 'unread', '!open'],
                     t.font.dup.weight(:bold), ['!read']
                   ])
  t.element_create('sel.e', :rect, :open=>:e, :showfocus=>true,
                   :fill=>[
                     @SystemHighlight, ['selected', 'focus'],
                     'gray',  ['selected', '!focus']
                   ])
  t.element_create('sel.w', :rect, :open=>:w, :showfocus=>true,
                   :fill=>[
                     @SystemHighlight, ['selected', 'focus'],
                     'gray',  ['selected', '!focus']
                   ])
  t.element_create('sel.we', :rect, :open=>:we, :showfocus=>true,
                   :fill=>[
                     @SystemHighlight, ['selected', 'focus'],
                     'gray',  ['selected', '!focus']
                   ])

  # Image + text
  s = t.style_create('s1')
  t.style_elements(s, ['sel.e', 'elemImg', 'elemTxt'])
  t.style_layout(s, 'elemImg', :expand=>:ns)
  t.style_layout(s, 'elemTxt', :padx=>[2,6], :squeeze=>:x, :expand=>:ns)
  t.style_layout(s, 'sel.e', :union=>['elemTxt'],
                 :iexpand=>:nes, :ipadx=>[2,0])

  # Text
  s = t.style_create('s2.we')
  t.style_elements(s, ['sel.we', 'elemTxt'])
  t.style_layout(s, 'elemTxt', :padx=>6, :squeeze=>:x, :expand=>:ns)
  t.style_layout(s, 'sel.we', :detach=>true, :iexpand=>:es)

  # Text
  s = t.style_create('s2.w')
  t.style_elements(s, ['sel.w', 'elemTxt'])
  t.style_layout(s, 'elemTxt', :padx=>6, :squeeze=>:x, :expand=>:ns)
  t.style_layout(s, 'sel.w', :detach=>true, :iexpand=>:es)

  # Set default item style
  if $Version_1_1_OrLater
    t.defaultstyle = ['', '', '', 's1', 's2.we', 's2.we', 's2.w']
  end

  msgCnt = 100
  thread = 0

  @Message = Hash.new{|k, v| k[v] = Hash.new}
  @Message[:count][0] = 0

  items = [t.index(:root)]

  (1...(msgCnt)).each{|i|
    item_i = t.item_create
    item_j = nil
    j = nil
    loop {
      j = rand(i)
      item_j = items[j]
      break if j == 0
      next if t.depth(item_j) == 5
      next if @Message[:count][@Message[:thread][item_j]] == 15
      break
    }
    t.item_lastchild(item_j, item_i)

    @Message[:read][item_i] = (rand(2) == 0)
    if j == 0
      thread += 1
      @Message[:thread][item_i] = thread
      @Message[:seconds][item_i] = (Tk::Clock.seconds - rand(500000))
      @Message[:seconds2][item_i] = @Message[:seconds][item_i]
      @Message[:count][thread] = 1
    else
      @Message[:thread][item_i] = @Message[:thread][item_j]
      @Message[:seconds][item_i] = (@Message[:seconds2][item_j] + rand(10000))
      @Message[:seconds2][item_i] = @Message[:seconds][item_i]
      @Message[:seconds2][item_j] = @Message[:seconds][item_i]
      @Message[:count][@Message[:thread][item_j]] += 1
    end
    items << item_i
  }

  (1...(msgCnt)).each{|i|
    item_i = items[i]
    subject = "This is thread number #{@Message[:thread][item_i]}"
    from = '[email protected]'
    sent = Tk::Clock.format(@Message[:seconds][item_i], "%d/%m/%y %I:%M %p")
    size = "#{1 + rand(10)}KB"

    # This message has been read
    t.item_state_set(item_i, 'read') if @Message[:read][item_i]

    # This message has unread descendants
    t.item_state_set(item_i, 'unread')  if anyUnreadDescendants(t, item_i)

    if t.item_numchildren(item_i) > 0
      if $Version_1_1_OrLater
        t.item_configure(item_i, :button=>true)
      else # TreeCtrl 1.0
        t.item_hasbutton(item_i, true)
      end

      # Collapse some messages
      if $Version_1_1_OrLater
        t.item_collapse(item_i) if rand(2) == 0
      else # TreeCtrl 1.0
        t.collapse(item_i) if rand(2) == 0
      end
    end

    unless $Version_1_1_OrLater
      t.item_style_set(item_i, 3, 's1', 4, 's2.we', 5, 's2.we', 6, 's2.w')
    end
    t.item_text(item_i, 3, subject, 4, from, 5, sent, 6, size)
  }

  # Do something when the selection changes
  t.notify_bind(t, 'Selection',
                proc{|w|
                  if w.selection_count == 1
                    # One item is selected
                    if @Message[:afterId][:id]
                      Tk.after_cancel(@Message[:afterId][:id])
                    end
                    @Message[:afterId][:item] = w.selection_get[0]
                    @Message[:afterId][:id] = Tk.after(500, proc{
                                                         messageReadDelayed(w)
                                                       })
                  end
                }, '%T')
end

#demoOutlookNewsgroup2(t) ⇒ Object

Alternate implementation which does not rely on run-time states



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# File 'sample/tkextlib/treectrl/outlook-newgroup.rb', line 206

def demoOutlookNewsgroup2(t)
  init_pics('outlook-*')

  height = t.font.metrics(:linespace)
  height = 18 if height < 18
  t.configure(:itemheight=>height, :selectmode=>:browse, :showlines=>false,
              :showroot=>false, :showrootbutton=>false, :showbuttons=>true)

  if $Version_1_1_OrLater
    t.column_create(:image=>@images['outlook-clip'], :tag=>'clip')
    t.column_create(:image=>@images['outlook-arrow'], :tag=>'arrow')
    t.column_create(:image=>@images['outlook-watch'], :tag=>'watch')
    t.column_create(:text=>'Subject', :width=>250, :tag=>'subject')
    t.column_create(:text=>'From', :width=>150, :tag=>'from')
    t.column_create(:text=>'Sent', :width=>150, :tag=>'sent')
    t.column_create(:text=>'Size', :width=>60, :justify=>:right, :tag=>'size')
  else # TreeCtrl 1.0
    t.column_configure(0, :image=>@images['outlook-clip'], :tag=>'clip')
    t.column_configure(1, :image=>@images['outlook-arrow'], :tag=>'arrow')
    t.column_configure(2, :image=>@images['outlook-watch'], :tag=>'watch')
    t.column_configure(3, :text=>'Subject', :width=>250, :tag=>'subject')
    t.column_configure(4, :text=>'From', :width=>150, :tag=>'from')
    t.column_configure(5, :text=>'Sent', :width=>150, :tag=>'sent')
    t.column_configure(6, :text=>'Size', :width=>60, :justify=>:right,
                       :tag=>'size')
  end

  t.treecolumn = 3

  t.element_create('image.unread', :image, :image=>@images['outlook-unread'])
  t.element_create('image.read', :image, :image=>@images['outlook-read'])
  t.element_create('image.read2', :image, :image=>@images['outlook-read-2'])
  t.element_create('text.read', :text, :lines=>1,
                   :fill=>[@SystemHighlightText, ['selected', 'focus']])
  t.element_create('text.unread', :text, :lines=>1,
                   :fill=>[@SystemHighlightText, ['selected', 'focus']],
                   :font=>t.font.dup.weight(:bold))
  t.element_create('sel.e', :rect, :open=>:e, :showfocus=>true,
                   :fill=>[
                     @SystemHighlight, ['selected', 'focus'],
                     'gray',  ['selected', '!focus']
                   ])
  t.element_create('sel.w', :rect, :open=>:w, :showfocus=>true,
                   :fill=>[
                     @SystemHighlight, ['selected', 'focus'],
                     'gray',  ['selected', '!focus']
                   ])
  t.element_create('sel.we', :rect, :open=>:we, :showfocus=>true,
                   :fill=>[
                     @SystemHighlight, ['selected', 'focus'],
                     'gray',  ['selected', '!focus']
                   ])

  # Image + text
  s = t.style_create('unread')
  t.style_elements(s, ['sel.e', 'image.unread', 'text.unread'])
  t.style_layout(s, 'image.unread', :expand=>:ns)
  t.style_layout(s, 'text.unread', :padx=>[2,6], :squeeze=>:x, :expand=>:ns)
  t.style_layout(s, 'sel.e', :union=>['text.unread'],
                 :iexpand=>:nes, :ipadx=>[2,0])

  # Image + text
  s = t.style_create('read')
  t.style_elements(s, ['sel.e', 'image.read', 'text.read'])
  t.style_layout(s, 'image.read', :expand=>:ns)
  t.style_layout(s, 'text.read', :padx=>[2,6], :squeeze=>:x, :expand=>:ns)
  t.style_layout(s, 'sel.e', :union=>['text.read'],
                 :iexpand=>:nes, :ipadx=>[2,0])

  # Image + text
  s = t.style_create('read2')
  t.style_elements(s, ['sel.e', 'image.read2', 'text.unread'])
  t.style_layout(s, 'image.read2', :expand=>:ns)
  t.style_layout(s, 'text.unread', :padx=>[2,6], :squeeze=>:x, :expand=>:ns)
  t.style_layout(s, 'sel.e', :union=>['text.unread'],
                 :iexpand=>:nes, :ipadx=>[2,0])

  # Text
  s = t.style_create('unread.we')
  t.style_elements(s, ['sel.we', 'text.unread'])
  t.style_layout(s, 'text.unread', :padx=>6, :squeeze=>:x, :expand=>:ns)
  t.style_layout(s, 'sel.we', :detach=>true, :iexpand=>:es)

  # Text
  s = t.style_create('read.we')
  t.style_elements(s, ['sel.we', 'text.read'])
  t.style_layout(s, 'text.read', :padx=>6, :squeeze=>:x, :expand=>:ns)
  t.style_layout(s, 'sel.we', :detach=>true, :iexpand=>:es)

  # Text
  s = t.style_create('unread.w')
  t.style_elements(s, ['sel.w', 'text.unread'])
  t.style_layout(s, 'text.unread', :padx=>6, :squeeze=>:x, :expand=>:ns)
  t.style_layout(s, 'sel.w', :detach=>true, :iexpand=>:es)

  # Text
  s = t.style_create('read.w')
  t.style_elements(s, ['sel.w', 'text.read'])
  t.style_layout(s, 'text.read', :padx=>6, :squeeze=>:x, :expand=>:ns)
  t.style_layout(s, 'sel.w', :detach=>true, :iexpand=>:es)

  msgCnt = 100
  thread = 0

  @Message = Hash.new{|k, v| k[v] = Hash.new}
  @Message[:count][0] = 0

  (1...(msgCnt)).each{|i|
    t.item_create
    j = nil
    loop {
      j = rand(i)
      break if j == 0
      next if t.depth(j) == 5
      next if @Message[:count][@Message[:thread][j]] == 15
      break
    }
    t.item_lastchild(j, i)

    @Message[:read][i] = (rand(2) == 0)
    if j == 0
      thread += 1
      @Message[:thread][i] = thread
      @Message[:seconds][i] = (Tk::Clock.seconds - rand(500000))
      @Message[:seconds2][i] = @Message[:seconds][i]
      @Message[:count][thread] = 1
    else
      @Message[:thread][i] = @Message[:thread][j]
      @Message[:seconds][i] = (@Message[:seconds2][j] + rand(10000))
      @Message[:seconds2][i] = @Message[:seconds][i]
      @Message[:seconds2][j] = @Message[:seconds][i]
      @Message[:count][@Message[:thread][j]] += 1
    end
  }

  (1...(msgCnt)).each{|i|
    subject = "This is thread number #{@Message[:thread][i]}"
    from = '[email protected]'
    sent = Tk::Clock.format(@Message[:seconds][i], "%d/%m/%y %I:%M %p")
    size = "#{1 + rand(10)}KB"
    if @Message[:read][i]
      style = 'read'
      style2 = 'read2'
    else
      style = 'unread'
      style2 = 'unread2'
    end
    t.item_style_set(i, 3, style, 4, "#{style2}.we", 5, "#{style2}.we",
                     6, "#{style2}.w")
    t.item_text(i, 3, subject, 4, from, 5, sent, 6, size)
    if t.item_numchildren(i) > 0
      t.item_configure(item_i, :button=>true)
    end
  }

  # Do something when the selection changes
  t.notify_bind(t, 'Selection',
                proc{|w|
                  if w.selection_count == 1
                    i = t.selection_get[0]
                    unless @Message[:read][i]
                      if t.item_isopen(i) || !anyUnreadDescendants(t, i)
                        # unread -> read
                        t.item_style_map(i, 'subject', 'read',
                                         ['text.unread', 'text.read'])
                        t.item_style_map(i, 'from', 'read.we',
                                         ['text.unread', 'text.read'])
                        t.item_style_map(i, 'sent', 'read.we',
                                         ['text.unread', 'text.read'])
                        t.item_style_map(i, 'size', 'read.w',
                                         ['text.unread', 'text.read'])
                      else
                        # unread -> read2
                        t.item_style_map(i, 'subject', 'read2',
                                         ['text.unread', 'text.unread'])
                      end

                      @Message[:read][i] = true
                      @display_styles_in_item.call(i)
                    end
                  end
                }, '%T')

  t.notify_bind(t, 'Expand-after',
                proc{|w, i|
                  if @Messge[:read][i] && anyUnreadDescendants(t, i)
                    # read2 -> read
                    t.item_style_map(i, 'subject', 'read',
                                     ['text.unread', 'text.read'])
                    # unread -> read
                    t.item_style_map(i, 'from', 'read.we',
                                     ['text.unread', 'text.read'])
                    t.item_style_map(i, 'sent', 'read.we',
                                     ['text.unread', 'text.read'])
                    t.item_style_map(i, 'size', 'read.w',
                                     ['text.unread', 'text.read'])
                  end
                }, '%T %I')

  t.notify_bind(t, 'Collapse-after',
                proc{|w, i|
                  if @Messge[:read][i] && anyUnreadDescendants(t, i)
                    # read -> read2
                    t.item_style_map(i, 'subject', 'read2',
                                     ['text.read', 'text.unread'])
                    # read -> unread
                    t.item_style_map(i, 'from', 'unread.we',
                                     ['text.read', 'text.unread'])
                    t.item_style_map(i, 'sent', 'unread.we',
                                     ['text.read', 'text.unread'])
                    t.item_style_map(i, 'size', 'unread.w',
                                     ['text.read', 'text.unread'])
                  end
                }, '%T %I')

  (1...(msgCnt)).each{|i|
    if rand(2) == 0
      if t.item_numchildren(i) > 0
        if $Version_1_1_OrLater
          t.item_collapse(i)
        else # TreeCtrl 1.0
          t.collapse(i)
        end
      end
    end
  }
end

#demoRandom(t) ⇒ Object

Demo: random N items



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# File 'sample/tkextlib/treectrl/random.rb', line 9

def demoRandom(t)
  init_pics('folder-*', 'small-*')

  height = t.font.metrics(:linespace)
  height = 18 if height < 18
  t.configure(:itemheight=>height, :selectmode=>:extended,
              :showroot=>true, :showrootbutton=>true, :showbuttons=>true,
              :showlines=>true, :scrollmargin=>16,
              :xscrolldelay=>[500, 50], :yscrolldelay=>[500, 50])

  if $Version_1_1_OrLater
    t.column_create(:expand=>true, :text=>'Item',
                    :itembackground=>['#e0e8f0', []], :tag=>'item')
    t.column_create(:text=>'Parent', :justify=>:center,
                    :itembackground=>['gray90', []], :tag=>'parent')
    t.column_create(:text=>'Depth', :justify=>:center,
                    :itembackground=>['linen', []], :tag=>'depth')
  else # TreeCtrl 1.0
    t.column_configure(0, :expand=>true, :text=>'Item',
                       :itembackground=>['#e0e8f0', []], :tag=>'item')
    t.column_configure(1, :text=>'Parent', :justify=>:center,
                       :itembackground=>['gray90', []], :tag=>'parent')
    t.column_configure(2, :text=>'Depth', :justify=>:center,
                       :itembackground=>['linen', []], :tag=>'depth')
  end

  t.element_create('e1', :image, :image=>[
                     @images['folder-open'], ['open'],
                     @images['folder-closed'], []
                   ])
  t.element_create('e2', :image, :image=>@images['small-file'])
  t.element_create('e3', :text,
                   :fill=>[@SystemHighlightText, ['selected', 'focus']])
  t.element_create('e4', :text, :fill=>'blue')
  t.element_create('e6', :text)
  t.element_create('e5', :rect, :showfocus=>true,
                   :fill=>[
                     @SystemHighlight, ['selected', 'focus'],
                     'gray', ['selected', '!focus']
                   ])

  s = t.style_create('s1')
  t.style_elements(s, ['e5', 'e1', 'e3', 'e4'])
  t.style_layout(s, 'e1', :padx=>[0,4], :expand=>:ns)
  t.style_layout(s, 'e3', :padx=>[0,4], :expand=>:ns)
  t.style_layout(s, 'e4', :padx=>[0,6], :expand=>:ns)
  t.style_layout(s, 'e5', :union=>['e3'], :iexpand=>:ns, :ipadx=>2)

  s = t.style_create('s2')
  t.style_elements(s, ['e5', 'e2', 'e3'])
  t.style_layout(s, 'e2', :padx=>[0,4], :expand=>:ns)
  t.style_layout(s, 'e3', :padx=>