canvas with scrollbars.py :  » Mobile » Python-for-PalmOS » Python-1.5.2+reduced-1.0 » Demo » tkinter » matt » Python Open Source

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Python Open Source » Mobile » Python for PalmOS 
Python for PalmOS » Python 1.5.2 reduced 1.0 » Demo » tkinter » matt » canvas-with-scrollbars.py
from Tkinter import *

# This example program creates a scroling canvas, and demonstrates 
# how to tie scrollbars and canvses together. The mechanism
# is analogus for listboxes and other widgets with
# "xscroll" and "yscroll" configuration options.

class Test(Frame):
    def printit(self):
  print "hi"

    def createWidgets(self):
  self.question = Label(self, text="Can Find The BLUE Square??????")
  self.question.pack()

  self.QUIT = Button(self, text='QUIT', background='red', 
         height=3, command=self.quit)
  self.QUIT.pack(side=BOTTOM, fill=BOTH)  
  spacer = Frame(self, height="0.25i")
  spacer.pack(side=BOTTOM)

  # notice that the scroll region (20" x 20") is larger than 
  # displayed size of the widget (5" x 5")
  self.draw = Canvas(self, width="5i", height="5i",
         background="white",
         scrollregion=(0, 0, "20i", "20i"))

  self.draw.scrollX = Scrollbar(self, orient=HORIZONTAL)
  self.draw.scrollY = Scrollbar(self, orient=VERTICAL)

  # now tie the three together. This is standard boilerplate text
  self.draw['xscrollcommand'] = self.draw.scrollX.set
  self.draw['yscrollcommand'] = self.draw.scrollY.set
  self.draw.scrollX['command'] = self.draw.xview
  self.draw.scrollY['command'] = self.draw.yview

  # draw something. Note that the first square 
  # is visible, but you need to scroll to see the second one.
  self.draw.create_rectangle(0, 0, "3.5i", "3.5i", fill="black")
  self.draw.create_rectangle("10i", "10i", "13.5i", "13.5i", fill="blue")

  # pack 'em up
  self.draw.scrollX.pack(side=BOTTOM, fill=X)
  self.draw.scrollY.pack(side=RIGHT, fill=Y)
  self.draw.pack(side=LEFT)


    def scrollCanvasX(self, *args): 
  print "scrolling", args
  print self.draw.scrollX.get()


    def __init__(self, master=None):
  Frame.__init__(self, master)
  Pack.config(self)
  self.createWidgets()

test = Test()

test.mainloop()
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