diff options
Diffstat (limited to 'sample/tkline.rb')
-rw-r--r-- | sample/tkline.rb | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/sample/tkline.rb b/sample/tkline.rb new file mode 100644 index 0000000000..63d763a680 --- /dev/null +++ b/sample/tkline.rb @@ -0,0 +1,46 @@ + +$tk_thread_safe = TRUE +require "tkclass" + +$tkline_init = FALSE +def start_random + return if $tkline_init + $tkline_init = TRUE + if defined? Thread + Thread.start do + loop do + sleep 2 + Line.new($c, rand(400), rand(200), rand(400), rand(200)) + end + end + end +end + +$c = Canvas.new +$c.pack +$start_x = start_y = 0 + +def do_press(x, y) + $start_x = x + $start_y = y + $current_line = Line.new($c, x, y, x, y) + start_random +end +def do_motion(x, y) + if $current_line + $current_line.coords $start_x, $start_y, x, y + end +end + +def do_release(x, y) + if $current_line + $current_line.coords $start_x, $start_y, x, y + $current_line.fill 'black' + $current_line = nil + end +end + +$c.bind("1", proc{|e| do_press e.x, e.y}) +$c.bind("B1-Motion", proc{|x, y| do_motion x, y}, "%x %y") +$c.bind("ButtonRelease-1", proc{|x, y| do_release x, y}, "%x %y") +Tk.mainloop |