# Authors: Joe VanAndel and Greg McFarlane
import string
import sys
import time
import Tkinter
import Pmw
class TimeCounter(Pmw.MegaWidget):
"""Up-down counter
A TimeCounter is a single-line entry widget with Up and Down arrows
which increment and decrement the Time value in the entry.
"""
def __init__(self, parent = None, **kw):
# Define the megawidget options.
INITOPT = Pmw.INITOPT
optiondefs = (
('autorepeat', 1, None),
('buttonaspect', 1.0, INITOPT),
('command', None, None),
('initwait', 300, None),
('labelmargin', 0, INITOPT),
('labelpos', None, INITOPT),
('max', None, self._max),
('min', None, self._min),
('padx', 0, INITOPT),
('pady', 0, INITOPT),
('repeatrate', 50, None),
('value', None, INITOPT),
)
self.defineoptions(kw, optiondefs)
# Initialise the base class (after defining the options).
Pmw.MegaWidget.__init__(self, parent)
self.arrowDirection = {}
self._flag = 'stopped'
self._timerId = None
self._createComponents(kw)
value = self['value']
if value is None:
now = time.time()
value = time.strftime('%H:%M:%S', time.localtime(now))
self.setvalue(value)
# Check keywords and initialise options.
self.initialiseoptions()
def _createComponents(self, kw):
# Create the components.
interior = self.interior()
# If there is no label, put the arrows and the entry directly
# into the interior, otherwise create a frame for them. In
# either case the border around the arrows and the entry will
# be raised (but not around the label).
if self['labelpos'] is None:
frame = interior
if not kw.has_key('hull_relief'):
frame.configure(relief = 'raised')
if not kw.has_key('hull_borderwidth'):
frame.configure(borderwidth = 1)
else:
frame = self.createcomponent('frame',
(), None,
Tkinter.Frame, (interior,),
relief = 'raised', borderwidth = 1)
frame.grid(column=2, row=2, sticky='nsew')
interior.grid_columnconfigure(2, weight=1)
interior.grid_rowconfigure(2, weight=1)
# Create the down arrow buttons.
# Create the hour down arrow.
self._downHourArrowBtn = self.createcomponent('downhourarrow',
(), 'Arrow',
Tkinter.Canvas, (frame,),
width = 16, height = 16, relief = 'raised', borderwidth = 2)
self.arrowDirection[self._downHourArrowBtn] = 'down'
self._downHourArrowBtn.grid(column = 0, row = 2)
# Create the minute down arrow.
self._downMinuteArrowBtn = self.createcomponent('downminutearrow',
(), 'Arrow',
Tkinter.Canvas, (frame,),
width = 16, height = 16, relief = 'raised', borderwidth = 2)
self.arrowDirection[self._downMinuteArrowBtn] = 'down'
self._downMinuteArrowBtn.grid(column = 1, row = 2)
# Create the second down arrow.
self._downSecondArrowBtn = self.createcomponent('downsecondarrow',
(), 'Arrow',
Tkinter.Canvas, (frame,),
width = 16, height = 16, relief = 'raised', borderwidth = 2)
self.arrowDirection[self._downSecondArrowBtn] = 'down'
self._downSecondArrowBtn.grid(column = 2, row = 2)
# Create the entry fields.
# Create the hour entry field.
self._hourCounterEntry = self.createcomponent('hourentryfield',
(('hourentry', 'hourentryfield_entry'),), None,
Pmw.EntryField, (frame,), validate='integer', entry_width = 2)
self._hourCounterEntry.grid(column = 0, row = 1, sticky = 'news')
# Create the minute entry field.
self._minuteCounterEntry = self.createcomponent('minuteentryfield',
(('minuteentry', 'minuteentryfield_entry'),), None,
Pmw.EntryField, (frame,), validate='integer', entry_width = 2)
self._minuteCounterEntry.grid(column = 1, row = 1, sticky = 'news')
# Create the second entry field.
self._secondCounterEntry = self.createcomponent('secondentryfield',
(('secondentry', 'secondentryfield_entry'),), None,
Pmw.EntryField, (frame,), validate='integer', entry_width = 2)
self._secondCounterEntry.grid(column = 2, row = 1, sticky = 'news')
# Create the up arrow buttons.
# Create the hour up arrow.
self._upHourArrowBtn = self.createcomponent('uphourarrow',
(), 'Arrow',
Tkinter.Canvas, (frame,),
width = 16, height = 16, relief = 'raised', borderwidth = 2)
self.arrowDirection[self._upHourArrowBtn] = 'up'
self._upHourArrowBtn.grid(column = 0, row = 0)
# Create the minute up arrow.
self._upMinuteArrowBtn = self.createcomponent('upminutearrow',
(), 'Arrow',
Tkinter.Canvas, (frame,),
width = 16, height = 16, relief = 'raised', borderwidth = 2)
self.arrowDirection[self._upMinuteArrowBtn] = 'up'
self._upMinuteArrowBtn.grid(column = 1, row = 0)
# Create the second up arrow.
self._upSecondArrowBtn = self.createcomponent('upsecondarrow',
(), 'Arrow',
Tkinter.Canvas, (frame,),
width = 16, height = 16, relief = 'raised', borderwidth = 2)
self.arrowDirection[self._upSecondArrowBtn] = 'up'
self._upSecondArrowBtn.grid(column = 2, row = 0)
# Make it resize nicely.
padx = self['padx']
pady = self['pady']
for col in range(3):
frame.grid_columnconfigure(col, weight = 1, pad = padx)
frame.grid_rowconfigure(0, pad = pady)
frame.grid_rowconfigure(2, pad = pady)
frame.grid_rowconfigure(1, weight = 1)
# Create the label.
self.createlabel(interior)
# Set bindings.
# Up hour
self._upHourArrowBtn.bind('<Configure>',
lambda event, s=self,button=self._upHourArrowBtn:
s._drawArrow(button, 'up'))
self._upHourArrowBtn.bind('<1>',
lambda event, s=self,button=self._upHourArrowBtn:
s._countUp(button, 3600))
self._upHourArrowBtn.bind('<Any-ButtonRelease-1>',
lambda event, s=self, button=self._upHourArrowBtn:
s._stopUpDown(button))
# Up minute
self._upMinuteArrowBtn.bind('<Configure>',
lambda event, s=self,button=self._upMinuteArrowBtn:
s._drawArrow(button, 'up'))
self._upMinuteArrowBtn.bind('<1>',
lambda event, s=self,button=self._upMinuteArrowBtn:
s._countUp(button, 60))
self._upMinuteArrowBtn.bind('<Any-ButtonRelease-1>',
lambda event, s=self, button=self._upMinuteArrowBtn:
s._stopUpDown(button))
# Up second
self._upSecondArrowBtn.bind('<Configure>',
lambda event, s=self,button=self._upSecondArrowBtn:
s._drawArrow(button, 'up'))
self._upSecondArrowBtn.bind('<1>',
lambda event, s=self,button=self._upSecondArrowBtn:
s._countUp(button, 1))
self._upSecondArrowBtn.bind('<Any-ButtonRelease-1>',
lambda event, s=self, button=self._upSecondArrowBtn:
s._stopUpDown(button))
# Down hour
self._downHourArrowBtn.bind('<Configure>',
lambda event, s=self,button=self._downHourArrowBtn:
s._drawArrow(button, 'down'))
self._downHourArrowBtn.bind('<1>',
lambda event, s=self,button=self._downHourArrowBtn:
s._countDown(button, 3600))
self._downHourArrowBtn.bind('<Any-ButtonRelease-1>',
lambda event, s=self, button=self._downHourArrowBtn:
s._stopUpDown(button))
# Down minute
self._downMinuteArrowBtn.bind('<Configure>',
lambda event, s=self,button=self._downMinuteArrowBtn:
s._drawArrow(button, 'down'))
self._downMinuteArrowBtn.bind('<1>',
lambda event, s=self,button=self._downMinuteArrowBtn:
s._countDown(button, 60))
self._downMinuteArrowBtn.bind('<Any-ButtonRelease-1>',
lambda event, s=self, button=self._downMinuteArrowBtn:
s._stopUpDown(button))
# Down second
self._downSecondArrowBtn.bind('<Configure>',
lambda event, s=self,button=self._downSecondArrowBtn:
s._drawArrow(button, 'down'))
self._downSecondArrowBtn.bind('<1>',
lambda event, s=self, button=self._downSecondArrowBtn:
s._countDown(button,1))
self._downSecondArrowBtn.bind('<Any-ButtonRelease-1>',
lambda event, s=self, button=self._downSecondArrowBtn:
s._stopUpDown(button))
self._hourCounterEntry.component('entry').bind(
'<Return>', self._invoke)
self._minuteCounterEntry.component('entry').bind(
'<Return>', self._invoke)
self._secondCounterEntry.component('entry').bind(
'<Return>', self._invoke)
self._hourCounterEntry.bind('<Configure>', self._resizeArrow)
self._minuteCounterEntry.bind('<Configure>', self._resizeArrow)
self._secondCounterEntry.bind('<Configure>', self._resizeArrow)
def _drawArrow(self, arrow, direction):
Pmw.drawarrow(arrow, self['hourentry_foreground'], direction, 'arrow')
def _resizeArrow(self, event = None):
for btn in (self._upHourArrowBtn, self._upMinuteArrowBtn,
self._upSecondArrowBtn,
self._downHourArrowBtn,
self._downMinuteArrowBtn, self._downSecondArrowBtn):
bw = (string.atoi(btn['borderwidth']) +
string.atoi(btn['highlightthickness']))
newHeight = self._hourCounterEntry.winfo_reqheight() - 2 * bw
newWidth = int(newHeight * self['buttonaspect'])
btn.configure(width=newWidth, height=newHeight)
self._drawArrow(btn, self.arrowDirection[btn])
def _min(self):
min = self['min']
if min is None:
self._minVal = 0
else:
self._minVal = Pmw.timestringtoseconds(min)
def _max(self):
max = self['max']
if max is None:
self._maxVal = None
else:
self._maxVal = Pmw.timestringtoseconds(max)
def getvalue(self):
return self.getstring()
def setvalue(self, text):
list = string.split(text, ':')
if len(list) != 3:
raise ValueError, 'invalid value: ' + text
self._hour = string.atoi(list[0])
self._minute = string.atoi(list[1])
self._second = string.atoi(list[2])
self._setHMS()
def getstring(self):
return '%02d:%02d:%02d' % (self._hour, self._minute, self._second)
def getint(self):
return self._hour * 3600 + self._minute * 60 + self._second
def _countUp(self, button, increment):
self._relief = self._upHourArrowBtn.cget('relief')
button.configure(relief='sunken')
self._count(1, 'start', increment)
def _countDown(self, button, increment):
self._relief = self._downHourArrowBtn.cget('relief')
button.configure(relief='sunken')
self._count(-1, 'start', increment)
def increment(self, seconds = 1):
self._count(1, 'force', seconds)
def decrement(self, seconds = 1):
self._count(-1, 'force', seconds)
def _count(self, factor, newFlag = None, increment = 1):
if newFlag != 'force':
if newFlag is not None:
self._flag = newFlag
if self._flag == 'stopped':
return
value = (string.atoi(self._hourCounterEntry.get()) *3600) + \
(string.atoi(self._minuteCounterEntry.get()) *60) + \
string.atoi(self._secondCounterEntry.get()) + \
factor * increment
min = self._minVal
max = self._maxVal
if value < min:
value = min
if max is not None and value > max:
value = max
self._hour = value /3600
self._minute = (value - (self._hour*3600)) / 60
self._second = value - (self._hour*3600) - (self._minute*60)
self._setHMS()
if newFlag != 'force':
if self['autorepeat']:
if self._flag == 'start':
delay = self['initwait']
self._flag = 'running'
else:
delay = self['repeatrate']
self._timerId = self.after(
delay, lambda self=self, factor=factor,increment=increment:
self._count(factor,'running', increment))
def _setHMS(self):
self._hourCounterEntry.setentry('%02d' % self._hour)
self._minuteCounterEntry.setentry('%02d' % self._minute)
self._secondCounterEntry.setentry('%02d' % self._second)
def _stopUpDown(self, button):
if self._timerId is not None:
self.after_cancel(self._timerId)
self._timerId = None
button.configure(relief=self._relief)
self._flag = 'stopped'
def _invoke(self, event):
cmd = self['command']
if callable(cmd):
cmd()
def invoke(self):
cmd = self['command']
if callable(cmd):
return cmd()
def destroy(self):
if self._timerId is not None:
self.after_cancel(self._timerId)
self._timerId = None
Pmw.MegaWidget.destroy(self)
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