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c4fdfabcc8
g -L frozen_string_literal ext/**/*.rb|xargs ruby -Ka -e'ARGV.each{|fn|puts
fn;open(fn,"r+"){|f|s=f.read.sub(/\A(#!.*\n)?(#.*coding.*\n)?/,"\\&#
frozen_string_literal: false\n");f.rewind;f.write s}}'
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53143 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
108 lines
2.8 KiB
Ruby
108 lines
2.8 KiB
Ruby
# frozen_string_literal: false
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# image2.rb
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#
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# This demonstration script creates a simple collection of widgets
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# that allow you to select and view images in a Tk label.
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#
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# widget demo 'load image' (called by 'widget')
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#
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# toplevel widget
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if defined?($image2_demo) && $image2_demo
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$image2_demo.destroy
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$image2_demo = nil
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end
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# demo toplevel widget
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$image2_demo = TkToplevel.new {|w|
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title('Image Demonstration #2')
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iconname("Image2")
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positionWindow(w)
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}
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base_frame = TkFrame.new($image2_demo).pack(:fill=>:both, :expand=>true)
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# label
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msg = TkLabel.new(base_frame) {
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font $font
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wraplength '4i'
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justify 'left'
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text "This demonstration allows you to view images using a Tk \"photo\" image. First type a directory name in the listbox, then press Enter to load the directory into the listbox. Then double-click on a file name in the listbox to see that image."
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}
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msg.pack('side'=>'top')
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# frame
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TkFrame.new(base_frame) {|frame|
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TkButton.new(frame) {
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text 'Dismiss'
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command proc{
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tmppath = $image2_demo
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$image2_demo = nil
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tmppath.destroy
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}
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}.pack('side'=>'left', 'expand'=>'yes')
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TkButton.new(frame) {
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text 'Show Code'
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command proc{showCode 'image2'}
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}.pack('side'=>'left', 'expand'=>'yes')
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}.pack('side'=>'bottom', 'fill'=>'x', 'pady'=>'2m')
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# create variable
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$dirName = TkVariable.new([$demo_dir,'..','images'].join(File::Separator))
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# image
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$image2a = TkPhotoImage.new
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#
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TkLabel.new(base_frame, 'text'=>'Directory:')\
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.pack('side'=>'top', 'anchor'=>'w')
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image2_e = TkEntry.new(base_frame) {
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width 30
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textvariable $dirName
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}.pack('side'=>'top', 'anchor'=>'w')
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TkFrame.new(base_frame, 'height'=>'3m', 'width'=>20)\
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.pack('side'=>'top', 'anchor'=>'w')
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TkLabel.new(base_frame, 'text'=>'File:')\
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.pack('side'=>'top', 'anchor'=>'w')
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TkFrame.new(base_frame){|w|
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s = TkScrollbar.new(w)
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l = TkListbox.new(w) {
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width 20
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height 10
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yscrollcommand proc{|first,last| s.set first,last}
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}
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s.command(proc{|*args| l.yview(*args)})
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l.pack('side'=>'left', 'expand'=>'yes', 'fill'=>'y')
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s.pack('side'=>'left', 'expand'=>'yes', 'fill'=>'y')
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#l.insert(0,'earth.gif', 'earthris.gif', 'mickey.gif', 'teapot.ppm')
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l.insert(0,'earth.gif', 'earthris.gif', 'teapot.ppm')
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l.bind('Double-1', proc{|x,y| loadImage $image2a,l,x,y}, '%x %y')
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image2_e.bind 'Return', proc{loadDir l}
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}.pack('side'=>'top', 'anchor'=>'w')
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# image
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[ TkFrame.new(base_frame, 'height'=>'3m', 'width'=>20),
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TkLabel.new(base_frame, 'text'=>'Image:'),
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TkLabel.new(base_frame, 'image'=>$image2a)
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].each{|w| w.pack('side'=>'top', 'anchor'=>'w')}
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#
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def loadDir(w)
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w.delete(0,'end')
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Dir.glob([$dirName,'*'].join(File::Separator)).sort.each{|f|
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w.insert('end',File.basename(f))
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}
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end
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def loadImage(img,w,x,y)
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img.file([$dirName, w.get("@#{x},#{y}")].join(File::Separator))
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end
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