Staging
v0.5.1
v0.5.1
https://github.com/python/cpython
Tip revision: 1da43e5e916949c8e849e656d9d05fa4b9d6836c authored by Benjamin Peterson on 26 June 2009, 13:21:52 UTC
rearrange the sections of the README, so they'll hopefully be more in the order people will interested in
rearrange the sections of the README, so they'll hopefully be more in the order people will interested in
Tip revision: 1da43e5
ListViewer.py
"""ListViewer class.
This class implements an input/output view on the color model. It lists every
unique color (e.g. unique r/g/b value) found in the color database. Each
color is shown by small swatch and primary color name. Some colors have
aliases -- more than one name for the same r/g/b value. These aliases are
displayed in the small listbox at the bottom of the screen.
Clicking on a color name or swatch selects that color and updates all other
windows. When a color is selected in a different viewer, the color list is
scrolled to the selected color and it is highlighted. If the selected color
is an r/g/b value without a name, no scrolling occurs.
You can turn off Update On Click if all you want to see is the alias for a
given name, without selecting the color.
"""
from Tkinter import *
import ColorDB
ADDTOVIEW = 'Color %List Window...'
class ListViewer:
def __init__(self, switchboard, master=None):
self.__sb = switchboard
optiondb = switchboard.optiondb()
self.__lastbox = None
self.__dontcenter = 0
# GUI
root = self.__root = Toplevel(master, class_='Pynche')
root.protocol('WM_DELETE_WINDOW', self.withdraw)
root.title('Pynche Color List')
root.iconname('Pynche Color List')
root.bind('<Alt-q>', self.__quit)
root.bind('<Alt-Q>', self.__quit)
root.bind('<Alt-w>', self.withdraw)
root.bind('<Alt-W>', self.withdraw)
#
# create the canvas which holds everything, and its scrollbar
#
frame = self.__frame = Frame(root)
frame.pack()
canvas = self.__canvas = Canvas(frame, width=160, height=300,
borderwidth=2, relief=SUNKEN)
self.__scrollbar = Scrollbar(frame)
self.__scrollbar.pack(fill=Y, side=RIGHT)
canvas.pack(fill=BOTH, expand=1)
canvas.configure(yscrollcommand=(self.__scrollbar, 'set'))
self.__scrollbar.configure(command=(canvas, 'yview'))
self.__populate()
#
# Update on click
self.__uoc = BooleanVar()
self.__uoc.set(optiondb.get('UPONCLICK', 1))
self.__uocbtn = Checkbutton(root,
text='Update on Click',
variable=self.__uoc,
command=self.__toggleupdate)
self.__uocbtn.pack(expand=1, fill=BOTH)
#
# alias list
self.__alabel = Label(root, text='Aliases:')
self.__alabel.pack()
self.__aliases = Listbox(root, height=5,
selectmode=BROWSE)
self.__aliases.pack(expand=1, fill=BOTH)
def __populate(self):
#
# create all the buttons
colordb = self.__sb.colordb()
canvas = self.__canvas
row = 0
widest = 0
bboxes = self.__bboxes = []
for name in colordb.unique_names():
exactcolor = ColorDB.triplet_to_rrggbb(colordb.find_byname(name))
canvas.create_rectangle(5, row*20 + 5,
20, row*20 + 20,
fill=exactcolor)
textid = canvas.create_text(25, row*20 + 13,
text=name,
anchor=W)
x1, y1, textend, y2 = canvas.bbox(textid)
boxid = canvas.create_rectangle(3, row*20+3,
textend+3, row*20 + 23,
outline='',
tags=(exactcolor, 'all'))
canvas.bind('<ButtonRelease>', self.__onrelease)
bboxes.append(boxid)
if textend+3 > widest:
widest = textend+3
row += 1
canvheight = (row-1)*20 + 25
canvas.config(scrollregion=(0, 0, 150, canvheight))
for box in bboxes:
x1, y1, x2, y2 = canvas.coords(box)
canvas.coords(box, x1, y1, widest, y2)
def __onrelease(self, event=None):
canvas = self.__canvas
# find the current box
x = canvas.canvasx(event.x)
y = canvas.canvasy(event.y)
ids = canvas.find_overlapping(x, y, x, y)
for boxid in ids:
if boxid in self.__bboxes:
break
else:
## print 'No box found!'
return
tags = self.__canvas.gettags(boxid)
for t in tags:
if t[0] == '#':
break
else:
## print 'No color tag found!'
return
red, green, blue = ColorDB.rrggbb_to_triplet(t)
self.__dontcenter = 1
if self.__uoc.get():
self.__sb.update_views(red, green, blue)
else:
self.update_yourself(red, green, blue)
self.__red, self.__green, self.__blue = red, green, blue
def __toggleupdate(self, event=None):
if self.__uoc.get():
self.__sb.update_views(self.__red, self.__green, self.__blue)
def __quit(self, event=None):
self.__root.quit()
def withdraw(self, event=None):
self.__root.withdraw()
def deiconify(self, event=None):
self.__root.deiconify()
def update_yourself(self, red, green, blue):
canvas = self.__canvas
# turn off the last box
if self.__lastbox:
canvas.itemconfigure(self.__lastbox, outline='')
# turn on the current box
colortag = ColorDB.triplet_to_rrggbb((red, green, blue))
canvas.itemconfigure(colortag, outline='black')
self.__lastbox = colortag
# fill the aliases
self.__aliases.delete(0, END)
try:
aliases = self.__sb.colordb().aliases_of(red, green, blue)[1:]
except ColorDB.BadColor:
self.__aliases.insert(END, '<no matching color>')
return
if not aliases:
self.__aliases.insert(END, '<no aliases>')
else:
for name in aliases:
self.__aliases.insert(END, name)
# maybe scroll the canvas so that the item is visible
if self.__dontcenter:
self.__dontcenter = 0
else:
ig, ig, ig, y1 = canvas.coords(colortag)
ig, ig, ig, y2 = canvas.coords(self.__bboxes[-1])
h = int(canvas['height']) * 0.5
canvas.yview('moveto', (y1-h) / y2)
def save_options(self, optiondb):
optiondb['UPONCLICK'] = self.__uoc.get()
def colordb_changed(self, colordb):
self.__canvas.delete('all')
self.__populate()