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"""Main Pynche (Pythonically Natural Color and Hue Editor) widget.
"""
from Tkinter import *
import Pmw
import ColorDB
from ChipWidget import ChipWidget
from TypeinWidget import TypeinWidget
from StripWidget import StripWidget
ABOUTTEXT = '''Pynche 1.0 -- The Pythonically Natural Color and Hue Editor
Copyright (C) 1998 Barry A. Warsaw
Pynche is based on ICE 1.2 (Interactive Color Editor), written by
Barry A. Warsaw for the SunView window system in 1987.'''
def constant(numchips):
step = 255.0 / (numchips - 1)
start = 0.0
seq = []
while numchips > 0:
seq.append(int(start))
start = start + step
numchips = numchips - 1
return seq
# red variations, green+blue = cyan constant
def constant_cyan_generator(numchips, rgbtuple):
red, green, blue = rgbtuple
seq = constant(numchips)
return map(None, seq, [green] * numchips, [blue] * numchips)
# green variations, red+blue = magenta constant
def constant_magenta_generator(numchips, rgbtuple):
red, green, blue = rgbtuple
seq = constant(numchips)
return map(None, [red] * numchips, seq, [blue] * numchips)
# blue variations, red+green = yellow constant
def constant_yellow_generator(numchips, rgbtuple):
red, green, blue = rgbtuple
seq = constant(numchips)
return map(None, [red] * numchips, [green] * numchips, seq)
class PyncheWidget(Pmw.MegaWidget):
def __init__(self, colordb, parent=None, **kw):
self.__colordb = colordb
self.__parent = parent
self.__about = None
options = (('color', (128, 128, 128), self.__set_color),
('delegate', None, None),
)
self.defineoptions(kw, options)
# initialize base class -- after defining options
Pmw.MegaWidget.__init__(self, parent)
# create menubar
self.__menubar = Pmw.MenuBar(parent,
hull_relief=RAISED,
hull_borderwidth=1)
self.__menubar.pack(side=TOP, expand=YES, fill=BOTH)
self.__menubar.addmenu('File', None)
self.__menubar.addmenuitem('File',
type=COMMAND,
label='Quit',
command=self.__quit,
accelerator='Alt-Q')
self.__menubar.addmenu('Help', None, side=RIGHT)
self.__menubar.addmenuitem('Help',
type=COMMAND,
label='About...',
command=self.__popup_about,
accelerator='Alt-A')
parent.bind('<Alt-q>', self.__quit)
parent.bind('<Alt-Q>', self.__quit)
parent.bind('<Alt-a>', self.__popup_about)
parent.bind('<Alt-A>', self.__popup_about)
# create color selectors
group = Pmw.Group(parent, tag_text='Variations')
group.pack(side=TOP, expand=YES, fill=BOTH)
self.__reds = StripWidget(group.interior(),
generator=constant_cyan_generator,
axis=0, label='Red Variations')
self.__reds.pack()
self.__blues = StripWidget(group.interior(),
generator=constant_magenta_generator,
axis=1, label='Green Variations')
self.__blues.pack()
self.__greens = StripWidget(group.interior(),
generator=constant_yellow_generator,
axis=2, label='Blue Variations')
self.__greens.pack()
# create chip window
group = Pmw.Group(parent, tag_text='Current Color')
group.pack(side=LEFT, expand=YES, fill=BOTH)
self.__selected = ChipWidget(group.interior(),
label_text='Selected')
self.__selected.grid()
self.__nearest = ChipWidget(group.interior(),
label_text='Nearest')
self.__nearest.grid(row=0, column=1)
# TBD: this is somewhat bogus, as the code should be in a derived
# class of ChipWidget.
self.__chip = self.__nearest.component('chip')
self.__chip.bind('<ButtonPress-1>', self.__buttonpress)
self.__chip.bind('<ButtonRelease-1>', self.__buttonrelease)
# create the options window
self.__typein = TypeinWidget(group.interior())
self.__typein.grid(row=0, column=2)
# Check keywords and initialize options
self.initialiseoptions(PyncheWidget)
self.__typein.configure(delegate=self)
self.__reds.configure(delegate=self)
self.__greens.configure(delegate=self)
self.__blues.configure(delegate=self)
#
# PUBLIC INTERFACE
#
def set_color(self, obj, rgbtuple):
nearest = self.__colordb.nearest(rgbtuple)
red, green, blue = self.__colordb.find_byname(nearest)
# for an exact match, use the color name
if (red, green, blue) == rgbtuple:
self.__selected.configure(color=nearest)
# otherwise, use the #rrggbb name
else:
rrggbb = ColorDB.triplet_to_rrggbb(rgbtuple)
self.__selected.configure(color=rrggbb)
# configure all subwidgets
self.__nearest.configure(color=nearest)
self.__typein.configure(color=rgbtuple)
self.__reds.configure(color=rgbtuple)
self.__greens.configure(color=rgbtuple)
self.__blues.configure(color=rgbtuple)
delegate = self['delegate']
if delegate:
delegate.set_color(self, rgbtuple)
#
# PRIVATE INTERFACE
#
def __set_color(self):
self.set_color(self, self['color'])
def __buttonpress(self, event=None):
self.__chip.configure(relief=SUNKEN)
def __buttonrelease(self, event=None):
self.__chip.configure(relief=RAISED)
color = self.__nearest['color']
rgbtuple = self.__colordb.find_byname(color)
self.set_color(self, rgbtuple)
def __quit(self, event=None):
self.__parent.quit()
def __popup_about(self, event=None):
if not self.__about:
Pmw.aboutversion('1.0')
Pmw.aboutcopyright('Copyright (C) 1998 Barry A. Warsaw\n'
'All rights reserved')
Pmw.aboutcontact('For information about Pynche contact:\n'
'Barry A. Warsaw\n'
'email: bwarsaw@python.org')
self.__about = Pmw.AboutDialog(
applicationname='Pynche -- the PYthonically Natural\n'
'Color and Hue Editor')
self.__about.show()
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