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