Demo/tkinter/matt/animation-w-velocity-ctrl.py

   1 from Tkinter import *
   2
   3 # this is the same as simple-demo-1.py, but uses
   4 # subclassing.
   5 # note that there is no explicit call to start Tk.
   6 # Tkinter is smart enough to start the system if it's not already going.
   7
   8
   9 class Test(Frame):
  10     def printit(self):
  11         print "hi"
  12
  13     def createWidgets(self):
  14         self.QUIT = Button(self, text='QUIT', foreground='red',
  15                            command=self.quit)
  16         self.QUIT.pack(side=BOTTOM, fill=BOTH)
  17
  18         self.draw = Canvas(self, width="5i", height="5i")
  19
  20         self.speed = Scale(self, orient=HORIZONTAL, from_=-100, to=100)
  21
  22         self.speed.pack(side=BOTTOM, fill=X)
  23
  24         # all of these work..
  25         self.draw.create_rectangle(0, 0, 10, 10, tags="thing", fill="blue")
  26         self.draw.pack(side=LEFT)
  27
  28     def moveThing(self, *args):
  29         velocity = self.speed.get()
  30         str = float(velocity) / 1000.0
  31         str = `str` + "i"
  32         self.draw.move("thing",  str, str)
  33         self.after(10, self.moveThing)
  34
  35     def __init__(self, master=None):
  36         Frame.__init__(self, master)
  37         Pack.config(self)
  38         self.createWidgets()
  39         self.after(10, self.moveThing)
  40
  41
  42 test = Test()
  43
  44 test.mainloop()