/Demo/tkinter/matt/canvas-with-scrollbars.py

 1from Tkinter import *
 2
 3# This example program creates a scroling canvas, and demonstrates
 4# how to tie scrollbars and canvses together. The mechanism
 5# is analogus for listboxes and other widgets with
 6# "xscroll" and "yscroll" configuration options.
 7
 8class Test(Frame):
 9    def printit(self):
10        print "hi"
11
12    def createWidgets(self):
13        self.question = Label(self, text="Can Find The BLUE Square??????")
14        self.question.pack()
15
16        self.QUIT = Button(self, text='QUIT', background='red',
17                           height=3, command=self.quit)
18        self.QUIT.pack(side=BOTTOM, fill=BOTH)
19        spacer = Frame(self, height="0.25i")
20        spacer.pack(side=BOTTOM)
21
22        # notice that the scroll region (20" x 20") is larger than
23        # displayed size of the widget (5" x 5")
24        self.draw = Canvas(self, width="5i", height="5i",
25                           background="white",
26                           scrollregion=(0, 0, "20i", "20i"))
27
28        self.draw.scrollX = Scrollbar(self, orient=HORIZONTAL)
29        self.draw.scrollY = Scrollbar(self, orient=VERTICAL)
30
31        # now tie the three together. This is standard boilerplate text
32        self.draw['xscrollcommand'] = self.draw.scrollX.set
33        self.draw['yscrollcommand'] = self.draw.scrollY.set
34        self.draw.scrollX['command'] = self.draw.xview
35        self.draw.scrollY['command'] = self.draw.yview
36
37        # draw something. Note that the first square
38        # is visible, but you need to scroll to see the second one.
39        self.draw.create_rectangle(0, 0, "3.5i", "3.5i", fill="black")
40        self.draw.create_rectangle("10i", "10i", "13.5i", "13.5i", fill="blue")
41
42        # pack 'em up
43        self.draw.scrollX.pack(side=BOTTOM, fill=X)
44        self.draw.scrollY.pack(side=RIGHT, fill=Y)
45        self.draw.pack(side=LEFT)
46
47
48    def scrollCanvasX(self, *args):
49        print "scrolling", args
50        print self.draw.scrollX.get()
51
52
53    def __init__(self, master=None):
54        Frame.__init__(self, master)
55        Pack.config(self)
56        self.createWidgets()
57
58test = Test()
59
60test.mainloop()