mirror of
https://github.com/python/cpython.git
synced 2024-11-29 00:56:12 +01:00
80 lines
2.2 KiB
Python
80 lines
2.2 KiB
Python
"""Color chip megawidget.
|
||
This widget is used for displaying a color. It consists of three components:
|
||
|
||
label -- a Tkinter.Label, this is the chip's label which is displayed
|
||
about the color chip
|
||
chip -- A Tkinter.Frame, the frame displaying the color
|
||
name -- a Tkinter.Label, the name of the color
|
||
|
||
In addition, the megawidget understands the following options:
|
||
|
||
color -- the color displayed in the chip and name widgets
|
||
|
||
When run as a script, this program displays a sample chip.
|
||
"""
|
||
|
||
|
||
from Tkinter import *
|
||
import Pmw
|
||
|
||
class ChipWidget(Pmw.MegaWidget):
|
||
_WIDTH = 80
|
||
_HEIGHT = 100
|
||
|
||
def __init__(self, parent=None, **kw):
|
||
optionsdefs = (('chip_borderwidth', 2, None),
|
||
('chip_width', self._WIDTH, None),
|
||
('chip_height', self._HEIGHT, None),
|
||
('label_text', 'Color', None),
|
||
('color', 'blue', self.__set_color),
|
||
)
|
||
self.defineoptions(kw, optionsdefs)
|
||
|
||
# initialize base class -- after defining options
|
||
Pmw.MegaWidget.__init__(self, parent)
|
||
interiorarg = (self.interior(),)
|
||
|
||
# create the label
|
||
self.__label = self.createcomponent(
|
||
# component name, aliases, group
|
||
'label', (), None,
|
||
# widget class, widget args
|
||
Label, interiorarg)
|
||
self.__label.grid(row=0, column=0)
|
||
|
||
# create the color chip
|
||
self.__chip = self.createcomponent(
|
||
'chip', (), None,
|
||
Frame, interiorarg,
|
||
relief=RAISED, borderwidth=2)
|
||
self.__chip.grid(row=1, column=0)
|
||
|
||
# create the color name
|
||
self.__name = self.createcomponent(
|
||
'name', (), None,
|
||
Label, interiorarg,)
|
||
self.__name.grid(row=2, column=0)
|
||
|
||
# Check keywords and initialize options
|
||
self.initialiseoptions(ChipWidget)
|
||
|
||
# called whenever `color' option is set
|
||
def __set_color(self):
|
||
color = self['color']
|
||
self.__chip['background'] = color
|
||
self.__name['text'] = color
|
||
|
||
|
||
|
||
if __name__ == '__main__':
|
||
root = Pmw.initialise(fontScheme='pmw1')
|
||
root.title('ChipWidget demonstration')
|
||
|
||
exitbtn = Button(root, text='Exit', command=root.destroy)
|
||
exitbtn.pack(side=BOTTOM)
|
||
widget = ChipWidget(root, color='red',
|
||
chip_width=200,
|
||
label_text='Selected Color')
|
||
widget.pack()
|
||
root.mainloop()
|