"""
EntryScale Class: Scale with a label, and a linked and validated entry
"""
__all__ = ['EntryScale', 'EntryScaleGroup']
from direct.showbase.TkGlobal import *
from panda3d.core import Vec4
import Pmw
from tkinter.simpledialog import *
from tkinter.colorchooser import askcolor
[docs]class EntryScale(Pmw.MegaWidget):
"Scale with linked and validated entry"
[docs] def __init__(self, parent = None, **kw):
# Define the megawidget options.
optiondefs = (
('state', None, None),
('value', 0.0, Pmw.INITOPT),
('resolution', 0.001, None),
('command', None, None),
('preCallback', None, None),
('postCallback', None, None),
('callbackData', [], None),
('min', 0.0, self._updateValidate),
('max', 100.0, self._updateValidate),
('text', 'EntryScale', self._updateLabelText),
('numDigits', 2, self._setSigDigits),
)
self.defineoptions(kw, optiondefs)
# Initialise superclass
Pmw.MegaWidget.__init__(self, parent)
# Initialize some class variables
self.value = self['value']
self.entryFormat = '%.2f'
self.fScaleCommand = 0
# Create the components.
# Setup up container
interior = self.interior()
interior.configure(relief = GROOVE, borderwidth = 2)
# Create a label and an entry
self.labelFrame = self.createcomponent('frame', (), None,
Frame, interior)
# Create an entry field to display and validate the entryScale's value
self.entryValue = StringVar()
self.entryValue.set(self['value'])
self.entry = self.createcomponent('entryField',
# Access widget's entry using "entry"
(('entry', 'entryField_entry'),),
None,
Pmw.EntryField, self.labelFrame,
entry_width = 10,
validate = { 'validator': 'real',
'min': self['min'],
'max': self['max'],
'minstrict': 0,
'maxstrict': 0},
entry_justify = 'right',
entry_textvar = self.entryValue,
command = self._entryCommand)
self.entry.pack(side='left', padx = 4)
# Create the EntryScale's label
self.label = self.createcomponent('label', (), None,
Label, self.labelFrame,
text = self['text'],
width = 12,
anchor = 'center',
font = "Arial 12 bold")
self.label.pack(side='left', expand = 1, fill = 'x')
self.label.bind('<Button-3>', self.askForLabel)
# Now pack the frame
self.labelFrame.pack(expand = 1, fill = 'both')
# Create a label and an entry
self.minMaxFrame = self.createcomponent('mmFrame', (), None,
Frame, interior)
# Create the EntryScale's min max labels
self.minLabel = self.createcomponent('minLabel', (), None,
Label, self.minMaxFrame,
text = repr(self['min']),
relief = FLAT,
width = 5,
anchor = W,
font = "Arial 8")
self.minLabel.pack(side='left', fill = 'x')
self.minLabel.bind('<Button-3>', self.askForMin)
# Create the scale component.
self.scale = self.createcomponent('scale', (), None,
Scale, self.minMaxFrame,
command = self._scaleCommand,
orient = 'horizontal',
length = 150,
from_ = self['min'],
to = self['max'],
resolution = self['resolution'],
showvalue = 0)
self.scale.pack(side = 'left', expand = 1, fill = 'x')
# Set scale to the middle of its range
self.scale.set(self['value'])
self.scale.bind('<Button-1>', self.__onPress)
self.scale.bind('<ButtonRelease-1>', self.__onRelease)
self.scale.bind('<Button-3>', self.askForResolution)
self.maxLabel = self.createcomponent('maxLabel', (), None,
Label, self.minMaxFrame,
text = repr(self['max']),
relief = FLAT,
width = 5,
anchor = E,
font = "Arial 8")
self.maxLabel.bind('<Button-3>', self.askForMax)
self.maxLabel.pack(side='left', fill = 'x')
self.minMaxFrame.pack(expand = 1, fill = 'both')
# Check keywords and initialise options based on input values.
self.initialiseoptions(EntryScale)
[docs] def label(self):
return self.label
[docs] def scale(self):
return self.scale
[docs] def entry(self):
return self.entry
[docs] def askForLabel(self, event = None):
newLabel = askstring(title = self['text'],
prompt = 'New label:',
initialvalue = repr(self['text']),
parent = self.interior())
if newLabel:
self['text'] = newLabel
[docs] def askForMin(self, event = None):
newMin = askfloat(title = self['text'],
prompt = 'New min val:',
initialvalue = repr(self['min']),
parent = self.interior())
if newMin:
self.setMin(newMin)
[docs] def setMin(self, newMin):
self['min'] = newMin
self.scale['from_'] = newMin
self.minLabel['text'] = newMin
self.entry.checkentry()
[docs] def askForMax(self, event = None):
newMax = askfloat(title = self['text'],
parent = self.interior(),
initialvalue = self['max'],
prompt = 'New max val:')
if newMax:
self.setMax(newMax)
[docs] def setMax(self, newMax):
self['max'] = newMax
self.scale['to'] = newMax
self.maxLabel['text'] = newMax
self.entry.checkentry()
[docs] def askForResolution(self, event = None):
newResolution = askfloat(title = self['text'],
parent = self.interior(),
initialvalue = self['resolution'],
prompt = 'New resolution:')
if newResolution:
self.setResolution(newResolution)
[docs] def setResolution(self, newResolution):
self['resolution'] = newResolution
self.scale['resolution'] = newResolution
self.entry.checkentry()
def _updateLabelText(self):
self.label['text'] = self['text']
def _updateValidate(self):
self.configure(entryField_validate = {
'validator': 'real',
'min': self['min'],
'max': self['max'],
'minstrict': 0,
'maxstrict': 0})
self.minLabel['text'] = self['min']
self.scale['from_'] = self['min']
self.scale['to'] = self['max']
self.maxLabel['text'] = self['max']
def _scaleCommand(self, strVal):
if not self.fScaleCommand:
return
# convert scale val to float
self.set(float(strVal))
"""
# Update entry to reflect formatted value
self.entryValue.set(self.entryFormat % self.value)
self.entry.checkentry()
if self['command']:
self['command'](self.value)
"""
def _entryCommand(self, event = None):
try:
val = float(self.entryValue.get())
self.onReturn(*self['callbackData'])
self.set(val)
self.onReturnRelease(*self['callbackData'])
except ValueError:
pass
def _setSigDigits(self):
sd = self['numDigits']
self.entryFormat = '%.' + '%d' % sd + 'f'
# And reset value to reflect change
self.entryValue.set(self.entryFormat % self.value)
[docs] def get(self):
return self.value
[docs] def set(self, newVal, fCommand = 1):
# Clamp value
if self['min'] is not None:
if newVal < self['min']:
newVal = self['min']
if self['max'] is not None:
if newVal > self['max']:
newVal = self['max']
# Round by resolution
if self['resolution'] is not None:
newVal = round(newVal / self['resolution']) * self['resolution']
# Record updated value
self.value = newVal
# Update scale's position
self.scale.set(newVal)
# Update entry to reflect formatted value
self.entryValue.set(self.entryFormat % self.value)
self.entry.checkentry()
# execute command
if fCommand and (self['command'] is not None):
self['command'](newVal)
[docs] def onReturn(self, *args):
""" User redefinable callback executed on <Return> in entry """
[docs] def onReturnRelease(self, *args):
""" User redefinable callback executed on <Return> release in entry """
def __onPress(self, event):
# First execute onpress callback
if self['preCallback']:
self['preCallback'](*self['callbackData'])
# Now enable slider command
self.fScaleCommand = 1
[docs] def onPress(self, *args):
""" User redefinable callback executed on button press """
def __onRelease(self, event):
# Now disable slider command
self.fScaleCommand = 0
# First execute onpress callback
if self['postCallback']:
self['postCallback'](*self['callbackData'])
[docs] def onRelease(self, *args):
""" User redefinable callback executed on button release """
[docs]class EntryScaleGroup(Pmw.MegaToplevel):
[docs] def __init__(self, parent = None, **kw):
# Default group size
DEFAULT_DIM = 1
# Default value depends on *actual* group size, test for user input
DEFAULT_VALUE = [0.0] * kw.get('dim', DEFAULT_DIM)
DEFAULT_LABELS = ['v[%d]' % x for x in range(kw.get('dim', DEFAULT_DIM))]
#define the megawidget options
INITOPT = Pmw.INITOPT
optiondefs = (
('dim', DEFAULT_DIM, INITOPT),
('side', TOP, INITOPT),
('title', 'Group', None),
# A tuple of initial values, one for each entryScale
('value', DEFAULT_VALUE, INITOPT),
# The command to be executed any time one of the entryScales is updated
('command', None, None),
('preCallback', None, None),
('postCallback', None, None),
# A tuple of labels, one for each entryScale
('labels', DEFAULT_LABELS, self._updateLabels),
# Destroy or withdraw
('fDestroy', 0, INITOPT)
)
self.defineoptions(kw, optiondefs)
# Initialize the toplevel widget
Pmw.MegaToplevel.__init__(self, parent)
# Create the components
interior = self.interior()
# Get a copy of the initial value (making sure its a list)
self._value = list(self['value'])
# The Menu Bar
self.balloon = Pmw.Balloon()
menubar = self.createcomponent('menubar', (), None,
Pmw.MenuBar, (interior,),
balloon = self.balloon)
menubar.pack(fill=X)
# EntryScaleGroup Menu
menubar.addmenu('EntryScale Group', 'EntryScale Group Operations')
menubar.addmenuitem(
'EntryScale Group', 'command', 'Reset the EntryScale Group panel',
label = 'Reset',
command = lambda s = self: s.reset())
if self['fDestroy']:
dismissCommand = self.destroy
else:
dismissCommand = self.withdraw
menubar.addmenuitem(
'EntryScale Group', 'command', 'Dismiss EntryScale Group panel',
label = 'Dismiss', command = dismissCommand)
menubar.addmenu('Help', 'EntryScale Group Help Operations')
self.toggleBalloonVar = IntVar()
self.toggleBalloonVar.set(0)
menubar.addmenuitem('Help', 'checkbutton',
'Toggle balloon help',
label = 'Balloon Help',
variable = self.toggleBalloonVar,
command = self.toggleBalloon)
self.entryScaleList = []
for index in range(self['dim']):
# Add a group alias so you can configure the entryScales via:
# fg.configure(Valuator_XXX = YYY)
f = self.createcomponent(
'entryScale%d' % index, (), 'Valuator', EntryScale,
(interior,), value = self._value[index],
text = self['labels'][index])
# Do this separately so command doesn't get executed during construction
f['command'] = lambda val, s=self, i=index: s._entryScaleSetAt(i, val)
f['callbackData'] = [self]
# Callbacks
f.onReturn = self.__onReturn
f.onReturnRelease = self.__onReturnRelease
f['preCallback'] = self.__onPress
f['postCallback'] = self.__onRelease
f.pack(side = self['side'], expand = 1, fill = X)
self.entryScaleList.append(f)
# Make sure entryScales are initialized
self.set(self['value'])
# Make sure input variables processed
self.initialiseoptions(EntryScaleGroup)
def _updateLabels(self):
if self['labels']:
for index in range(self['dim']):
self.entryScaleList[index]['text'] = self['labels'][index]
[docs] def toggleBalloon(self):
if self.toggleBalloonVar.get():
self.balloon.configure(state = 'balloon')
else:
self.balloon.configure(state = 'none')
[docs] def get(self):
return self._value
[docs] def getAt(self, index):
return self._value[index]
# This is the command is used to set the groups value
[docs] def set(self, value, fCommand = 1):
for i in range(self['dim']):
self._value[i] = value[i]
# Update entryScale, but don't execute its command
self.entryScaleList[i].set(value[i], 0)
if fCommand and (self['command'] is not None):
self['command'](self._value)
[docs] def setAt(self, index, value):
# Update entryScale and execute its command
self.entryScaleList[index].set(value)
# This is the command used by the entryScale
def _entryScaleSetAt(self, index, value):
self._value[index] = value
if self['command']:
self['command'](self._value)
[docs] def reset(self):
self.set(self['value'])
def __onReturn(self, esg):
# Execute onReturn callback
self.onReturn(*esg.get())
[docs] def onReturn(self, *args):
""" User redefinable callback executed on button press """
pass
def __onReturnRelease(self, esg):
# Execute onReturnRelease callback
self.onReturnRelease(*esg.get())
[docs] def onReturnRelease(self, *args):
""" User redefinable callback executed on button press """
def __onPress(self, esg):
# Execute onPress callback
if self['preCallback']:
self['preCallback'](*esg.get())
[docs] def onPress(self, *args):
""" User redefinable callback executed on button press """
def __onRelease(self, esg):
# Execute onRelease callback
if self['postCallback']:
self['postCallback'](*esg.get())
[docs] def onRelease(self, *args):
""" User redefinable callback executed on button release """
[docs]def rgbPanel(nodePath, callback = None):
def setNodePathColor(color, np = nodePath, cb = callback):
np.setColor(color[0]/255.0, color[1]/255.0,
color[2]/255.0, color[3]/255.0)
# Execute callback to pass along color info
if cb:
cb(color)
# Check init color
if nodePath.hasColor():
initColor = nodePath.getColor() * 255.0
else:
initColor = Vec4(255)
# Create entry scale group
esg = EntryScaleGroup(title = 'RGBA Panel: ' + nodePath.getName(),
dim = 4,
labels = ['R','G','B','A'],
value = [int(initColor[0]),
int(initColor[1]),
int(initColor[2]),
int(initColor[3])],
Valuator_max = 255,
Valuator_resolution = 1,
# Destroy not withdraw panel on dismiss
fDestroy = 1,
command = setNodePathColor)
# Update menu button
esg.component('menubar').component('EntryScale Group-button')['text'] = (
'RGBA Panel')
# Update menu
menubar = esg.component('menubar')
menubar.deletemenuitems('EntryScale Group', 1, 1)
# Some helper functions
# Clear color
menubar.addmenuitem(
'EntryScale Group', 'command',
label='Clear Color', command=lambda np=nodePath: np.clearColor())
# Set/Clear Transparency
menubar.addmenuitem(
'EntryScale Group', 'command',
label='Set Transparency', command=lambda np=nodePath: np.setTransparency(1))
menubar.addmenuitem(
'EntryScale Group', 'command',
label='Clear Transparency',
command=lambda np=nodePath: np.clearTransparency())
# System color picker
def popupColorPicker(esg = esg):
# Can pass in current color with: color = (255, 0, 0)
color = askcolor(
parent = esg.interior(),
# Initialize it to current color
initialcolor = tuple(esg.get()[:3]))[0]
if color:
esg.set((color[0], color[1], color[2], esg.getAt(3)))
menubar.addmenuitem(
'EntryScale Group', 'command',
label='Popup Color Picker', command=popupColorPicker)
def printToLog(nodePath=nodePath):
c = nodePath.getColor()
print("Vec4(%.3f, %.3f, %.3f, %.3f)" % (c[0], c[1], c[2], c[3]))
menubar.addmenuitem(
'EntryScale Group', 'command',
label='Print to log', command=printToLog)
# Add back the Dismiss item we removed.
if esg['fDestroy']:
dismissCommand = esg.destroy
else:
dismissCommand = esg.withdraw
menubar.addmenuitem(
'EntryScale Group', 'command', 'Dismiss EntryScale Group panel',
label='Dismiss', command=dismissCommand)
# Set callback
def onRelease(r, g, b, a, nodePath = nodePath):
messenger.send('RGBPanel_setColor', [nodePath, r, g, b, a])
esg['postCallback'] = onRelease
return esg
## SAMPLE CODE
if __name__ == '__main__':
# Initialise Tkinter and Pmw.
root = Toplevel()
root.title('Pmw EntryScale demonstration')
# Dummy command
def printVal(val):
print(val)
# Create and pack a EntryScale megawidget.
mega1 = EntryScale(root, command = printVal)
mega1.pack(side = 'left', expand = 1, fill = 'x')
# These are things you can set/configure
# Starting value for entryScale
#mega1['value'] = 123.456
#mega1['text'] = 'Drive delta X'
#mega1['min'] = 0.0
#mega1['max'] = 1000.0
#mega1['resolution'] = 1.0
# To change the color of the label:
#mega1.label['foreground'] = 'Red'
# Max change/update, default is 100
# To have really fine control, for example
# mega1['maxVelocity'] = 0.1
# Number of digits to the right of the decimal point, default = 2
# mega1['numDigits'] = 5
# To create a entryScale group to set an RGBA value:
group1 = EntryScaleGroup(root, dim = 4,
title = 'Simple RGBA Panel',
labels = ('R', 'G', 'B', 'A'),
Valuator_min = 0.0,
Valuator_max = 255.0,
Valuator_resolution = 1.0,
command = printVal)
# Uncomment this if you aren't running in IDLE
#root.mainloop()
