Python code coverage for Tools/pynche/ChipViewer.py

#	count	content
1	n/a	"""Chip viewer and widget.
2	n/a
3	n/a	In the lower left corner of the main Pynche window, you will see two
4	n/a	ChipWidgets, one for the selected color and one for the nearest color. The
5	n/a	selected color is the actual RGB value expressed as an X11 #COLOR name. The
6	n/a	nearest color is the named color from the X11 database that is closest to the
7	n/a	selected color in 3D space. There may be other colors equally close, but the
8	n/a	nearest one is the first one found.
9	n/a
10	n/a	Clicking on the nearest color chip selects that named color.
11	n/a
12	n/a	The ChipViewer class includes the entire lower left quandrant; i.e. both the
13	n/a	selected and nearest ChipWidgets.
14	n/a	"""
15	n/a
16	n/a	from tkinter import *
17	n/a	import ColorDB
18	n/a
19	n/a
20	n/a	class ChipWidget:
21	n/a	_WIDTH = 150
22	n/a	_HEIGHT = 80
23	n/a
24	n/a	def __init__(self,
25	n/a	master = None,
26	n/a	width = _WIDTH,
27	n/a	height = _HEIGHT,
28	n/a	text = 'Color',
29	n/a	initialcolor = 'blue',
30	n/a	presscmd = None,
31	n/a	releasecmd = None):
32	n/a	# create the text label
33	n/a	self.__label = Label(master, text=text)
34	n/a	self.__label.grid(row=0, column=0)
35	n/a	# create the color chip, implemented as a frame
36	n/a	self.__chip = Frame(master, relief=RAISED, borderwidth=2,
37	n/a	width=width,
38	n/a	height=height,
39	n/a	background=initialcolor)
40	n/a	self.__chip.grid(row=1, column=0)
41	n/a	# create the color name
42	n/a	self.__namevar = StringVar()
43	n/a	self.__namevar.set(initialcolor)
44	n/a	self.__name = Entry(master, textvariable=self.__namevar,
45	n/a	relief=FLAT, justify=CENTER, state=DISABLED,
46	n/a	font=self.__label['font'])
47	n/a	self.__name.grid(row=2, column=0)
48	n/a	# create the message area
49	n/a	self.__msgvar = StringVar()
50	n/a	self.__name = Entry(master, textvariable=self.__msgvar,
51	n/a	relief=FLAT, justify=CENTER, state=DISABLED,
52	n/a	font=self.__label['font'])
53	n/a	self.__name.grid(row=3, column=0)
54	n/a	# set bindings
55	n/a	if presscmd:
56	n/a	self.__chip.bind('<ButtonPress-1>', presscmd)
57	n/a	if releasecmd:
58	n/a	self.__chip.bind('<ButtonRelease-1>', releasecmd)
59	n/a
60	n/a	def set_color(self, color):
61	n/a	self.__chip.config(background=color)
62	n/a
63	n/a	def get_color(self):
64	n/a	return self.__chip['background']
65	n/a
66	n/a	def set_name(self, colorname):
67	n/a	self.__namevar.set(colorname)
68	n/a
69	n/a	def set_message(self, message):
70	n/a	self.__msgvar.set(message)
71	n/a
72	n/a	def press(self):
73	n/a	self.__chip.configure(relief=SUNKEN)
74	n/a
75	n/a	def release(self):
76	n/a	self.__chip.configure(relief=RAISED)
77	n/a
78	n/a
79	n/a
80	n/a	class ChipViewer:
81	n/a	def __init__(self, switchboard, master=None):
82	n/a	self.__sb = switchboard
83	n/a	self.__frame = Frame(master, relief=RAISED, borderwidth=1)
84	n/a	self.__frame.grid(row=3, column=0, ipadx=5, sticky='NSEW')
85	n/a	# create the chip that will display the currently selected color
86	n/a	# exactly
87	n/a	self.__sframe = Frame(self.__frame)
88	n/a	self.__sframe.grid(row=0, column=0)
89	n/a	self.__selected = ChipWidget(self.__sframe, text='Selected')
90	n/a	# create the chip that will display the nearest real X11 color
91	n/a	# database color name
92	n/a	self.__nframe = Frame(self.__frame)
93	n/a	self.__nframe.grid(row=0, column=1)
94	n/a	self.__nearest = ChipWidget(self.__nframe, text='Nearest',
95	n/a	presscmd = self.__buttonpress,
96	n/a	releasecmd = self.__buttonrelease)
97	n/a
98	n/a	def update_yourself(self, red, green, blue):
99	n/a	# Selected always shows the #rrggbb name of the color, nearest always
100	n/a	# shows the name of the nearest color in the database. BAW: should
101	n/a	# an exact match be indicated in some way?
102	n/a	#
103	n/a	# Always use the #rrggbb style to actually set the color, since we may
104	n/a	# not be using X color names (e.g. "web-safe" names)
105	n/a	colordb = self.__sb.colordb()
106	n/a	rgbtuple = (red, green, blue)
107	n/a	rrggbb = ColorDB.triplet_to_rrggbb(rgbtuple)
108	n/a	# find the nearest
109	n/a	nearest = colordb.nearest(red, green, blue)
110	n/a	nearest_tuple = colordb.find_byname(nearest)
111	n/a	nearest_rrggbb = ColorDB.triplet_to_rrggbb(nearest_tuple)
112	n/a	self.__selected.set_color(rrggbb)
113	n/a	self.__nearest.set_color(nearest_rrggbb)
114	n/a	# set the name and messages areas
115	n/a	self.__selected.set_name(rrggbb)
116	n/a	if rrggbb == nearest_rrggbb:
117	n/a	self.__selected.set_message(nearest)
118	n/a	else:
119	n/a	self.__selected.set_message('')
120	n/a	self.__nearest.set_name(nearest_rrggbb)
121	n/a	self.__nearest.set_message(nearest)
122	n/a
123	n/a	def __buttonpress(self, event=None):
124	n/a	self.__nearest.press()
125	n/a
126	n/a	def __buttonrelease(self, event=None):
127	n/a	self.__nearest.release()
128	n/a	rrggbb = self.__nearest.get_color()
129	n/a	red, green, blue = ColorDB.rrggbb_to_triplet(rrggbb)
130	n/a	self.__sb.update_views(red, green, blue)