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from types import StringType
from Tkinter import *
import ColorDB
class ChipWidget:
_WIDTH = 150
_HEIGHT = 80
def __init__(self,
parent = None,
width = _WIDTH,
height = _HEIGHT,
text = 'Color',
initialcolor = 'blue',
presscmd = None,
releasecmd = None):
# create the text label
self.__label = Label(parent, text=text)
self.__label.grid(row=0, column=0)
# create the color chip, implemented as a frame
self.__chip = Frame(parent, relief=RAISED, borderwidth=2,
width=width,
height=height,
background=initialcolor)
self.__chip.grid(row=1, column=0)
# create the color name, ctor argument must be a string
self.__name = Label(parent, text=initialcolor)
self.__name.grid(row=2, column=0)
#
# set bindings
if presscmd:
self.__chip.bind('<ButtonPress-1>', presscmd)
if releasecmd:
self.__chip.bind('<ButtonRelease-1>', releasecmd)
def set_color(self, color):
self.__chip.config(background=color)
self.__name.config(text=color)
def get_color(self):
return self.__chip['background']
def press(self):
self.__chip.configure(relief=SUNKEN)
def release(self):
self.__chip.configure(relief=RAISED)
class ChipViewer:
def __init__(self, switchboard, parent=None):
self.__sb = switchboard
self.__frame = Frame(parent, relief=GROOVE, borderwidth=2)
self.__frame.pack()
# create the chip that will display the currently selected color
# exactly
self.__sframe = Frame(self.__frame)
self.__sframe.grid(row=0, column=0)
self.__selected = ChipWidget(self.__sframe, text='Selected')
# create the chip that will display the nearest real X11 color
# database color name
self.__nframe = Frame(self.__frame)
self.__nframe.grid(row=0, column=1)
self.__nearest = ChipWidget(self.__nframe, text='Nearest',
presscmd = self.__buttonpress,
releasecmd = self.__buttonrelease)
def update_yourself(self, red, green, blue):
# TBD: should exactname default to X11 color name if their is an exact
# match for the rgb triplet? Part of me says it's nice to see both
# names for the color, the other part says that it's better to
# feedback the exact match.
rgbtuple = (red, green, blue)
try:
allcolors = self.__sb.colordb().find_byrgb(rgbtuple)
exactname = allcolors[0]
except ColorDB.BadColor:
exactname = ColorDB.triplet_to_rrggbb(rgbtuple)
nearest = self.__sb.colordb().nearest(red, green, blue)
self.__selected.set_color(exactname)
self.__nearest.set_color(nearest)
def __buttonpress(self, event=None):
self.__nearest.press()
def __buttonrelease(self, event=None):
self.__nearest.release()
colorname = self.__nearest.get_color()
red, green, blue = self.__sb.colordb().find_byname(colorname)
self.__sb.update_views(red, green, blue)
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