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"""Color chooser implementing (almost) the tkColorColor interface
"""
import os
import Main
import ColorDB
class Chooser:
"""Ask for a color"""
def __init__(self,
master = None,
databasefile = None,
initfile = None,
ignore = None,
wantspec = None):
self.__master = master
self.__databasefile = databasefile
self.__initfile = initfile or os.path.expanduser('~/.pynche')
self.__ignore = ignore
self.__pw = None
self.__wantspec = wantspec
def show(self, color, options):
# scan for options that can override the ctor options
self.__wantspec = options.get('wantspec', self.__wantspec)
dbfile = options.get('databasefile', self.__databasefile)
# load the database file
colordb = None
if dbfile != self.__databasefile:
colordb = ColorDB.get_colordb(dbfile)
if not self.__master:
from tkinter import Tk
self.__master = Tk()
if not self.__pw:
self.__pw, self.__sb = \
Main.build(master = self.__master,
initfile = self.__initfile,
ignore = self.__ignore)
else:
self.__pw.deiconify()
# convert color
if colordb:
self.__sb.set_colordb(colordb)
else:
colordb = self.__sb.colordb()
if color:
r, g, b = Main.initial_color(color, colordb)
self.__sb.update_views(r, g, b)
# reset the canceled flag and run it
self.__sb.canceled(0)
Main.run(self.__pw, self.__sb)
rgbtuple = self.__sb.current_rgb()
self.__pw.withdraw()
# check to see if the cancel button was pushed
if self.__sb.canceled_p():
return None, None
# Try to return the color name from the database if there is an exact
# match, otherwise use the "#rrggbb" spec. BAW: Forget about color
# aliases for now, maybe later we should return these too.
name = None
if not self.__wantspec:
try:
name = colordb.find_byrgb(rgbtuple)[0]
except ColorDB.BadColor:
pass
if name is None:
name = ColorDB.triplet_to_rrggbb(rgbtuple)
return rgbtuple, name
def save(self):
if self.__sb:
self.__sb.save_views()
# convenience stuff
_chooser = None
def askcolor(color = None, **options):
"""Ask for a color"""
global _chooser
if not _chooser:
_chooser = Chooser(**options)
return _chooser.show(color, options)
def save():
global _chooser
if _chooser:
_chooser.save()
# test stuff
if __name__ == '__main__':
from tkinter import *
class Tester:
def __init__(self):
self.__root = tk = Tk()
b = Button(tk, text='Choose Color...', command=self.__choose)
b.pack()
self.__l = Label(tk)
self.__l.pack()
q = Button(tk, text='Quit', command=self.__quit)
q.pack()
def __choose(self, event=None):
rgb, name = askcolor(master=self.__root)
if rgb is None:
text = 'You hit CANCEL!'
else:
r, g, b = rgb
text = 'You picked %s (%3d/%3d/%3d)' % (name, r, g, b)
self.__l.configure(text=text)
def __quit(self, event=None):
self.__root.quit()
def run(self):
self.__root.mainloop()
t = Tester()
t.run()
# simpler
## print 'color:', askcolor()
## print 'color:', askcolor()