Demo/sgi/flp/test_cb.py

   1 #
   2 # Example 2 - Using fl in python with callbacks.
   3 #
   4 # The form is named 'main_form' and resides on file 'test_cb.fd'.
   5 # It has three objects named button1, button2 and exitbutton.
   6 # All buttons have callbacks with the same names as their corresponding
   7 # buttons but with CB appended.
   8 #
   9 import fl               # The forms library
  10 import FL               # Symbolic constants for the above
  11 import flp              # The module to parse .fd files
  12 import sys
  13
  14 # The following struct is created to hold the instance variables
  15 # main_form, button1, button2 and exitbutton.
  16
  17 class myform:
  18         #
  19         # The constructor parses and creates the form, but doesn't
  20         # display it (yet).
  21         def __init__(self, number):
  22                 #
  23                 # First we parse the form
  24                 parsetree = flp.parse_form('test_cb', 'main_form')
  25                 #
  26                 # Next we create it
  27
  28                 flp.create_full_form(self, parsetree)
  29
  30                 # And keep our number
  31                 self.number = number
  32
  33         #
  34         # The show function displays the form. It doesn't do any interaction,
  35         # though.
  36         def show(self):
  37                 self.main_form.show_form(FL.PLACE_SIZE, 1, '')
  38
  39         # The callback functions
  40         def button1CB(self, obj, arg):
  41                 print 'Button 1 pressed on form', self.number
  42
  43         def button2CB(self, obj, arg):
  44                 print 'Button 2 pressed on form', self.number
  45
  46         def exitbuttonCB(self, obj, arg):
  47                 print 'Ok, bye bye'
  48                 sys.exit(0)
  49
  50 #
  51 # The main program. Instantiate two variables of the forms class
  52 # and interact with them.
  53
  54 form1 = myform(1)
  55 form2 = myform(2)
  56
  57 form1.show()
  58 form2.show()
  59
  60 obj = fl.do_forms()
  61 print 'do_forms() returned. This should not happen. obj=', obj