Staging
v0.8.1
v0.8.1
https://github.com/python/cpython
Tip revision: 1138eba3df894800ade11a149cd8d8584ecc4b30 authored by Éric Araujo on 05 September 2010, 18:59:49 UTC
Fix accidental suppression in r84537
Fix accidental suppression in r84537
Tip revision: 1138eba
ChipViewer.py
"""Chip viewer and widget.
In the lower left corner of the main Pynche window, you will see two
ChipWidgets, one for the selected color and one for the nearest color. The
selected color is the actual RGB value expressed as an X11 #COLOR name. The
nearest color is the named color from the X11 database that is closest to the
selected color in 3D space. There may be other colors equally close, but the
nearest one is the first one found.
Clicking on the nearest color chip selects that named color.
The ChipViewer class includes the entire lower left quandrant; i.e. both the
selected and nearest ChipWidgets.
"""
from tkinter import *
import ColorDB
class ChipWidget:
_WIDTH = 150
_HEIGHT = 80
def __init__(self,
master = None,
width = _WIDTH,
height = _HEIGHT,
text = 'Color',
initialcolor = 'blue',
presscmd = None,
releasecmd = None):
# create the text label
self.__label = Label(master, text=text)
self.__label.grid(row=0, column=0)
# create the color chip, implemented as a frame
self.__chip = Frame(master, relief=RAISED, borderwidth=2,
width=width,
height=height,
background=initialcolor)
self.__chip.grid(row=1, column=0)
# create the color name
self.__namevar = StringVar()
self.__namevar.set(initialcolor)
self.__name = Entry(master, textvariable=self.__namevar,
relief=FLAT, justify=CENTER, state=DISABLED,
font=self.__label['font'])
self.__name.grid(row=2, column=0)
# create the message area
self.__msgvar = StringVar()
self.__name = Entry(master, textvariable=self.__msgvar,
relief=FLAT, justify=CENTER, state=DISABLED,
font=self.__label['font'])
self.__name.grid(row=3, 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)
def get_color(self):
return self.__chip['background']
def set_name(self, colorname):
self.__namevar.set(colorname)
def set_message(self, message):
self.__msgvar.set(message)
def press(self):
self.__chip.configure(relief=SUNKEN)
def release(self):
self.__chip.configure(relief=RAISED)
class ChipViewer:
def __init__(self, switchboard, master=None):
self.__sb = switchboard
self.__frame = Frame(master, relief=RAISED, borderwidth=1)
self.__frame.grid(row=3, column=0, ipadx=5, sticky='NSEW')
# 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):
# Selected always shows the #rrggbb name of the color, nearest always
# shows the name of the nearest color in the database. BAW: should
# an exact match be indicated in some way?
#
# Always use the #rrggbb style to actually set the color, since we may
# not be using X color names (e.g. "web-safe" names)
colordb = self.__sb.colordb()
rgbtuple = (red, green, blue)
rrggbb = ColorDB.triplet_to_rrggbb(rgbtuple)
# find the nearest
nearest = colordb.nearest(red, green, blue)
nearest_tuple = colordb.find_byname(nearest)
nearest_rrggbb = ColorDB.triplet_to_rrggbb(nearest_tuple)
self.__selected.set_color(rrggbb)
self.__nearest.set_color(nearest_rrggbb)
# set the name and messages areas
self.__selected.set_name(rrggbb)
if rrggbb == nearest_rrggbb:
self.__selected.set_message(nearest)
else:
self.__selected.set_message('')
self.__nearest.set_name(nearest_rrggbb)
self.__nearest.set_message(nearest)
def __buttonpress(self, event=None):
self.__nearest.press()
def __buttonrelease(self, event=None):
self.__nearest.release()
rrggbb = self.__nearest.get_color()
red, green, blue = ColorDB.rrggbb_to_triplet(rrggbb)
self.__sb.update_views(red, green, blue)