#!/usr/bin/env python

# example layout.py

import gtk
import whrandom

class LayoutExample:
    def OnWindowDeleteEvent(self, widget, event):
        # return false so that window will be destroyed
        return gtk.FALSE

    def OnWindowDestroy(self, widget, *data):
        # exit main loop
        gtk.mainquit()

    def OnButtonClicked(self, button):
        # move the button
        # Note: it probably isn't necessary to freeze the layout widget here,
        # but better safe than sorry
        self.layout.freeze()
        self.layout.move(button, whrandom.randint(0,500),
                         whrandom.randint(0,500))
        self.layout.thaw()

    def __init__(self):
        # create the top level window
        window = gtk.GtkWindow(gtk.WINDOW_TOPLEVEL)
        window.set_title("Layout Example")
        window.set_default_size(300, 300)
        window.connect("delete-event", self.OnWindowDeleteEvent)
        window.connect("destroy", self.OnWindowDestroy)
        # create the table and pack into the window
        table = gtk.GtkTable(2, 2, gtk.FALSE)
        window.add(table)
        # create the layout widget and pack into the table
        self.layout = gtk.GtkLayout(None, None)
        self.layout.set_size(600, 600)
        table.attach(self.layout, 0, 1, 0, 1, gtk.FILL|gtk.EXPAND,
                     gtk.FILL|gtk.EXPAND, 0, 0)
        # create the scrollbars and pack into the table
        vScrollbar = gtk.GtkVScrollbar(None)
        table.attach(vScrollbar, 1, 2, 0, 1, gtk.FILL|gtk.SHRINK,
                     gtk.FILL|gtk.SHRINK, 0, 0)
        hScrollbar = gtk.GtkHScrollbar(None)
        table.attach(hScrollbar, 0, 1, 1, 2, gtk.FILL|gtk.SHRINK,
                     gtk.FILL|gtk.SHRINK, 0, 0)	
        # tell the scrollbars to use the layout widget's adjustments
        vAdjust = self.layout.get_vadjustment()
        vScrollbar.set_adjustment(vAdjust)
        hAdjust = self.layout.get_hadjustment()
        hScrollbar.set_adjustment(hAdjust)
        # create 3 buttons and put them into the layout widget
        button = gtk.GtkButton("Press Me")
        button.connect("clicked", self.OnButtonClicked)
        self.layout.put(button, 0, 0)
        button = gtk.GtkButton("Press Me")
        button.connect("clicked", self.OnButtonClicked)
        self.layout.put(button, 100, 0)
        button = gtk.GtkButton("Press Me")
        button.connect("clicked", self.OnButtonClicked)
        self.layout.put(button, 200, 0)
        # show all the widgets
        window.show_all()

def main():
    # enter the main loop
    gtk.mainloop()
    return 0

if __name__ == "__main__":
    LayoutExample()
    main()