10.3. Fixed Container
The Fixed container allows you to place widgets at a fixed position within it's window, relative to it's upper left hand corner. The position of the widgets can be changed dynamically.There are only three calls associated
with the fixed widget:
fixed = GtkFixed() fixed.put(widget, x, y) fixed.move(widget, x, y) |
The function GtkFixed() allows you to create a new Fixed container.
The put() method places widget in the container fixed at the position specified by x and y.
The move() method allows the specified widget to be moved to a new position.
The fixed.py example illustrates how to use the Fixed Container. Figure 10.2 shows the result:
Figure 10.2 Fixed Example
1 #!/usr/bin/env python
2
3 # example fixed.py
4
5 import gtk
6
7 class FixedExample:
8 # This callback method moves the button to a new position
9 # in the Fixed container.
10 def move_button(self, widget):
11 self.x = (self.x+30)%300
12 self.y = (self.y+50)%300
13 self.fixed.move(widget, self.x, self.y)
14
15 def __init__(self):
16 self.x = 50
17 self.y = 50
18
19 # Create a new window
20 window = gtk.GtkWindow(gtk.WINDOW_TOPLEVEL)
21 window.set_title("Fixed Container")
22
23 # Here we connect the "destroy" event to a signal handler
24 window.connect("destroy", gtk.mainquit)
25
26 # Sets the border width of the window.
27 window.set_border_width(10)
28
29 # Create a Fixed Container
30 self.fixed = gtk.GtkFixed()
31 window.add(self.fixed)
32 self.fixed.show()
33
34 for i in range(1, 4):
35 # Creates a new button with the label "Press me"
36 button = gtk.GtkButton("Press me")
37
38 # When the button receives the "clicked" signal, it will call the
39 # method move_button().
40 button.connect("clicked", self.move_button)
41
42 # This packs the button into the fixed containers window.
43 self.fixed.put(button, i*50, i*50)
44
45 # The final step is to display this newly created widget.
46 button.show()
47
48 # Display the window
49 window.show()
50
51 def main():
52 # Enter the event loop
53 gtk.mainloop()
54 return 0
55
56 if __name__ == "__main__":
57 FixedExample()
58 main()
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