1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
#------------------------------------------------------------------------------
#
# Copyright (c) 2005, Enthought, Inc.
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in enthought/LICENSE.txt and may be redistributed only
# under the conditions described in the aforementioned license. The license
# is also available online at http://www.enthought.com/licenses/BSD.txt
#
# Thanks for using Enthought open source!
#
# Author: David C. Morrill
# Data: 02/14/2005
#
#------------------------------------------------------------------------------
""" Trait definitions for an RGB-based color, which is a tuple of the form
(*red*, *green*, *blue*), where *red*, *green* and *blue* are floats in the
range from 0.0 to 1.0.
"""
#-------------------------------------------------------------------------------
# Imports:
#-------------------------------------------------------------------------------
from __future__ import absolute_import
from traits.api import Trait, TraitError
from traits.trait_base import SequenceTypes
#-------------------------------------------------------------------------------
# Convert a number into an RGB tuple:
#-------------------------------------------------------------------------------
def range_check ( value ):
""" Checks that *value* can be converted to a value in the range 0.0 to 1.0.
If so, it returns the floating point value; otherwise, it raises a TraitError.
"""
value = float( value )
if 0.0 <= value <= 1.0:
return value
raise TraitError
def convert_to_color ( object, name, value ):
""" Converts a tuple or an integer to an RGB color value, or raises a
TraitError if that is not possible.
"""
if (type( value ) in SequenceTypes) and (len( value ) == 3):
return ( range_check( value[0] ),
range_check( value[1] ),
range_check( value[2] ) )
if type( value ) is int:
num = int( value )
return ( (num / 0x10000) / 255.0
((num / 0x100) & 0xFF) / 255.0,
(num & 0xFF) / 255.0 )
raise TraitError
convert_to_color.info = ('a tuple of the form (r,g,b), where r, g, and b '
'are floats in the range from 0.0 to 1.0, or an integer which in hex is of '
'the form 0xRRGGBB, where RR is red, GG is green, and BB is blue')
#-------------------------------------------------------------------------------
# Standard colors:
#-------------------------------------------------------------------------------
# RGB versions of standard colors
rgb_standard_colors = {
'aquamarine': ( 0.439216, 0.858824, 0.576471 ),
'black': ( 0.0, 0.0, 0.0 ),
'blue': ( 0.0, 0.0, 1.0 ),
'blue violet': ( 0.623529, 0.372549, 0.623529 ),
'brown': ( 0.647059, 0.164706, 0.164706 ),
'cadet blue': ( 0.372549, 0.623529, 0.623529 ),
'coral': ( 1.0, 0.498039, 0.0 ),
'cornflower blue': ( 0.258824, 0.258824, 0.435294 ),
'cyan': ( 0.0, 1.0, 1.0 ),
'dark grey': ( 0.184314, 0.184314, 0.184314 ),
'dark green': ( 0.184314, 0.309804, 0.184314 ),
'dark olive green': ( 0.309804, 0.309804, 0.184314 ),
'dark orchid': ( 0.6, 0.196078, 0.8 ),
'dark slate blue': ( 0.419608, 0.137255, 0.556863 ),
'dark slate grey': ( 0.184314, 0.309804, 0.309804 ),
'dark turquoise': ( 0.439216, 0.576471, 0.858824 ),
'dim grey': ( 0.329412, 0.329412, 0.329412 ),
'firebrick': ( 0.556863, 0.137255, 0.137255 ),
'forest green': ( 0.137255, 0.556863, 0.137255 ),
'gold': ( 0.8, 0.498039, 0.196078 ),
'goldenrod': ( 0.858824, 0.858824, 0.439216 ),
'grey': ( 0.501961, 0.501961, 0.501961 ),
'green': ( 0.0, 1.0, 0.0 ),
'green yellow': ( 0.576471, 0.858824, 0.439216 ),
'indian red': ( 0.309804, 0.184314, 0.184314 ),
'khaki': ( 0.623529, 0.623529, 0.372549 ),
'light blue': ( 0.74902, 0.847059, 0.847059 ),
'light grey': ( 0.752941, 0.752941, 0.752941 ),
'light steel': ( 0.0, 0.0, 0.0 ),
'blue': ( 0.0, 0.0, 1.0 ),
'lime green': ( 0.196078, 0.8, 0.196078 ),
'magenta': ( 1.0, 0.0, 1.0 ),
'maroon': ( 0.556863, 0.137255, 0.419608 ),
'medium aquamarine': ( 0.196078, 0.8, 0.6 ),
'medium blue': ( 0.196078, 0.196078, 0.8 ),
'medium forest green': ( 0.419608, 0.556863, 0.137255 ),
'medium goldenrod': ( 0.917647, 0.917647, 0.678431 ),
'medium orchid': ( 0.576471, 0.439216, 0.858824 ),
'medium sea green': ( 0.258824, 0.435294, 0.258824 ),
'medium slate blue': ( 0.498039, 0.0, 1.0 ),
'medium spring green': ( 0.498039, 1.0, 0.0 ),
'medium turquoise': ( 0.439216, 0.858824, 0.858824 ),
'medium violet red': ( 0.858824, 0.439216, 0.576471 ),
'midnight blue': ( 0.184314, 0.184314, 0.309804 ),
'navy': ( 0.137255, 0.137255, 0.556863 ),
'orange': ( 0.8, 0.196078, 0.196078 ),
'orange red': ( 1.0, 0.0, 0.498039 ),
'orchid': ( 0.858824, 0.439216, 0.858824 ),
'pale green': ( 0.560784, 0.737255, 0.560784 ),
'pink': ( 0.737255, 0.560784, 0.917647 ),
'plum': ( 0.917647, 0.678431, 0.917647 ),
'purple': ( 0.690196, 0.0, 1.0 ),
'red': ( 1.0, 0.0, 0.0 ),
'salmon': ( 0.435294, 0.258824, 0.258824 ),
'sea green': ( 0.137255, 0.556863, 0.419608 ),
'sienna': ( 0.556863, 0.419608, 0.137255 ),
'sky blue': ( 0.196078, 0.6, 0.8 ),
'slate blue': ( 0.0, 0.498039, 1.0 ),
'spring green': ( 0.0, 1.0, 0.498039 ),
'steel blue': ( 0.137255, 0.419608, 0.556863 ),
'tan': ( 0.858824, 0.576471, 0.439216 ),
'thistle': ( 0.847059, 0.74902, 0.847059 ),
'turquoise': ( 0.678431, 0.917647, 0.917647 ),
'violet': ( 0.309804, 0.184314, 0.309804 ),
'violet red': ( 0.8, 0.196078, 0.6 ),
'wheat': ( 0.847059, 0.847059, 0.74902 ),
'white': ( 1.0, 1.0, 1.0 ),
'yellow': ( 1.0, 1.0, 0.0 ),
'yellow green': ( 0.6, 0.8, 0.196078 )
}
#-------------------------------------------------------------------------------
# Define 'null' specific color trait:
#-------------------------------------------------------------------------------
### Note: Declare the editor to be a function which returns the RGBColorEditor
# class from traits ui to avoid circular import issues. For backwards
# compatibility with previous Traits versions, the 'editors' folder in Traits
# project declares 'from api import *' in its __init__.py. The 'api' in turn
# can contain classes that have a RGBColor trait which lead to this file getting
# imported. This will lead to a circular import when declaring a RGBColor trait.
def get_rgb_color_editor(*args, **traits):
from ..editors.rgb_color_editor import ToolkitEditorFactory as RGBColorEditor
return RGBColorEditor(*args, **traits)
# Trait whose value must be an RGB color
RGBColor = Trait( 'white', convert_to_color, rgb_standard_colors,
editor = get_rgb_color_editor )
|
