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#!/usr/bin/env jython
# .+
# .context : Application View Controller
# .title : A counter with count speed control (Swing),
# GUI programmatically generated
# .kind : python source
# .author : Fabrizio Pollastri
# .site : Torino - Italy
# .creation : 22-Oct-2009
# .copyright : (c) 2009 Fabrizio Pollastri.
# .license : GNU General Public License (see below)
#
# This file is part of "AVC, Application View Controller".
#
# AVC is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# AVC is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# .-
from javax import swing # swing toolkit bindings
from java import awt # awt toolkit bindings
from avc import * # AVC for Swing
LOW_SPEED = 500 #--
HIGH_SPEED = 100 #- low and high speed period (ms)
class ExampleGUI:
"Counter GUI creation"
def __init__(self):
# create GUI
root = swing.JFrame('AVC Swing counter example',size=(350,60),
defaultCloseOperation = swing.JFrame.EXIT_ON_CLOSE)
root.layout = awt.FlowLayout()
root.add(swing.JLabel('counter',name='counter__label',))
root.add(swing.JCheckBox('high speed',name='high_speed__checkbox'))
root.show()
# create a timer for incrementer
self.timer = swing.Timer(LOW_SPEED,None)
class ExampleMain(AVC):
"""
A counter displayed in a Label widget whose count speed can be
accelerated by checking a check box.
"""
def __init__(self,gui):
# save GUI
self.gui = gui
# the counter variable and its speed status
self.counter = 0
self.high_speed = False
# start variable incrementer
self.gui.timer.actionPerformed = self.incrementer
self.gui.timer.start()
def incrementer(self,*args):
"""
Counter incrementer: increment period = LOW_SPEED, if high speed is False,
increment period = HIGH_SPEED otherwise.
"""
self.counter += 1
if self.high_speed:
period = HIGH_SPEED
else:
period = LOW_SPEED
self.gui.timer.setDelay(period)
def high_speed_changed(self,value):
"Notify change of counting speed to terminal"
if value:
print 'counting speed changed to high'
else:
print 'counting speed changed to low'
#### MAIN
example_gui = ExampleGUI() # create the application GUI
example = ExampleMain(example_gui) # instantiate the application
example.avc_init() # connect widgets with variables
#### END
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