ruby--ruby/ext/tk/sample/demos-jp/image3.rb

# -*- coding: euc-jp -*-
# image3.rb
#
# This demonstration script creates a simple collection of widgets
# that allow you to select and view images in a Tk label.
#
# widget demo 'load image' (called by 'widget')
#

# toplevel widget
if defined?($image3_demo) && $image3_demo
  $image3_demo.destroy
  $image3_demo = nil
end

# demo toplevel widget
$image3_demo = TkToplevel.new {|w|
  title('Image Demonstration #3')
  iconname("Image3")
  positionWindow(w)
}

base_frame = TkFrame.new($image3_demo).pack(:fill=>:both, :expand=>true)

#
def loadDir3(w)
  w.delete(0,'end')
  Dir.glob([$dirName,'*'].join(File::Separator)).sort.each{|f|
    w.insert('end',File.basename(f))
  }
end

# selectAndLoadDir3 --
# This procedure pops up a dialog to ask for a directory to load into
# the listobx and (if the user presses OK) reloads the directory
# listbox from the directory named in the demo's entry.
#
# Arguments:
# w -                   Name of the toplevel window of the demo.
def selectAndLoadDir3(w, lbox)
  dir = Tk.chooseDirectory(:initialdir=>$dirName.value,
                           :parent=>w, :mustexist=>true)
  if dir.length > 0
    $dirName.value = dir
    loadDir3(lbox)
  end
end

def loadImage3(w,x,y)
  $image3a.file([$dirName, w.get("@#{x},#{y}")].join(File::Separator))
end


# label
msg = TkLabel.new(base_frame) {
  font $font
  wraplength '4i'
  justify 'left'
  text "<EFBFBD><EFBFBD><EFBFBD>Υǥ<EFBFBD><EFBFBD>Ǥ<EFBFBD>Tk<EFBFBD><EFBFBD> photo image <20><><EFBFBD><EFBFBD><EFBFBD>Ѥ<EFBFBD><D1A4>Ʋ<EFBFBD><C6B2><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD>뤳<EFBFBD>Ȥ<EFBFBD><C8A4>Ǥ<EFBFBD><C7A4>ޤ<EFBFBD><DEA4><EFBFBD><EFBFBD>ǽ<EFBFBD><C7BD>˥<EFBFBD><CBA5><EFBFBD><EFBFBD>ȥ<EFBFBD><C8A5><EFBFBD><EFBFBD>ˤ˥ǥ<CBA5><C7A5>쥯<EFBFBD>ȥ<EFBFBD>̾<EFBFBD><CCBE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ʋ<EFBFBD><C6B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˲<EFBFBD><CBB2>Υꥹ<CEA5>ȥܥå<DCA5><C3A5><EFBFBD><EFBFBD>ˤ<EFBFBD><CBA4>Υǥ<CEA5><C7A5>쥯<EFBFBD>ȥ<EFBFBD><C8A5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɤ<EFBFBD><C9A4>뤿<EFBFBD>ᡢ<EFBFBD>꥿<EFBFBD><EAA5BF><EFBFBD><EFBFBD><EFBFBD>򲡤<EFBFBD><F2B2A1A4>Ƥ<EFBFBD><C6A4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>θ塢<CEB8><E5A1A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>򤹤뤿<F2A4B9A4><EBA4BF><EFBFBD>˥ꥹ<CBA5>ȥܥå<DCA5><C3A5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Υե<CEA5><D5A5><EFBFBD><EFBFBD><EFBFBD>̾<EFBFBD><CCBE><EFBFBD><EFBFBD><EFBFBD>֥륯<D6A5><EBA5AF><EFBFBD>å<EFBFBD><C3A5><EFBFBD><EFBFBD>Ʋ<EFBFBD><C6B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>"
}
msg.pack('side'=>'top')

# frame
TkFrame.new(base_frame) {|frame|
  TkButton.new(frame) {
    #text 'λ<><CEBB>'
    text '<27>Ĥ<EFBFBD><C4A4><EFBFBD>'
    command proc{
      tmppath = $image3_demo
      $image3_demo = nil
      tmppath.destroy
    }
  }.pack('side'=>'left', 'expand'=>'yes')

  TkButton.new(frame) {
    text '<27><><EFBFBD><EFBFBD><EFBFBD>ɻ<EFBFBD><C9BB><EFBFBD>'
    command proc{showCode 'image3'}
  }.pack('side'=>'left', 'expand'=>'yes')

}.pack('side'=>'bottom', 'fill'=>'x', 'pady'=>'2m')

# variable
$dirName = TkVariable.new([$demo_dir,'..','images'].join(File::Separator))

# image
begin
  $image3a.delete
rescue
end
$image3a = TkPhotoImage.new

#
image3_f = TkFrame.new(base_frame).pack(:fill=>:both, :expand=>true)

image3_df = TkLabelFrame.new(base_frame, :text=>'<27>ǥ<EFBFBD><C7A5>쥯<EFBFBD>ȥ<EFBFBD>:')

image3_ff = TkLabelFrame.new(base_frame, :text=>'<27>ե<EFBFBD><D5A5><EFBFBD><EFBFBD><EFBFBD>:',
                             :padx=>'2m', :pady=>'2m')
image3_lbx = TkListbox.new(image3_ff, :width=>20, :height=>10) {
  pack(:side=>:left, :fill=>:y, :expand=>true)
  yscrollbar(TkScrollbar.new(image3_ff).pack(:side=>:left, :fill=>:y,
                                             :expand=>true))
  insert(0, *(%w(earth.gif earthris.gif teapot.ppm)))
  bind('Double-1', proc{|x,y| loadImage3(self, x, y)}, '%x %y')
}

image3_ent = TkEntry.new(image3_df, :width=>30, :textvariable=>$dirName){
  pack(:side=>:left, :fill=>:both, :padx=>'2m', :pady=>'2m', :expand=>true)
  bind('Return', proc{loadDir3(image3_lbx)})
}

TkButton.new(image3_df, :pady=>0, :padx=>'2m', :text=>"<EFBFBD>ǥ<EFBFBD><EFBFBD>쥯<EFBFBD>ȥ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>",
             :command=>proc{selectAndLoadDir3(image3_ent, image3_lbx)}) {
  pack(:side=>:left, :fill=>:y, :padx=>[0, '2m'], :pady=>'2m')
}

image3_if = TkLabelFrame.new(base_frame, :text=>'<27><><EFBFBD>᡼<EFBFBD><E1A1BC>:') {|f|
  # TkLabel.new(f, :image=>$image3a).pack(:padx=>'2m', :pady=>'2m')
  Tk::Label.new(f, :image=>$image3a).pack(:padx=>'2m', :pady=>'2m')
}

Tk.grid(image3_df,  '-',
        :sticky=>:ew, :padx=>'1m', :pady=>'1m', :in=>image3_f)
Tk.grid(image3_ff, image3_if,
        :sticky=>:nw, :padx=>'1m', :pady=>'1m', :in=>image3_f)
TkGrid.columnconfigure(image3_f, 1, :weight=>1)