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# Licensed to the Software Freedom Conservancy (SFC) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The SFC licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
module Selenium
module WebDriver
module Support
class Color
RGB_PATTERN = %r{^\s*rgb\(\s*(\d{1,3})\s*,
\s*(\d{1,3})\s*,
\s*(\d{1,3})\s*\)\s*$}x
RGB_PCT_PATTERN = %r{^\s*rgb\(\s*(\d{1,3}|\d{1,2}\.\d+)%\s*,
\s*(\d{1,3}|\d{1,2}\.\d+)%\s*,
\s*(\d{1,3}|\d{1,2}\.\d+)%\s*\)\s*$}x
RGBA_PATTERN = %r{^\s*rgba\(\s*(\d{1,3})\s*,
\s*(\d{1,3})\s*,
\s*(\d{1,3})\s*,
\s*(0|1|0\.\d+)\s*\)\s*$}x
RGBA_PCT_PATTERN = %r{^\s*rgba\(\s*(\d{1,3}|\d{1,2}\.\d+)
%\s*,\s*(\d{1,3}|\d{1,2}\.\d+)
%\s*,\s*(\d{1,3}|\d{1,2}\.\d+)
%\s*,\s*(0|1|0\.\d+)\s*\)\s*$}x
HEX_PATTERN = /#(\h{2})(\h{2})(\h{2})/
HEX3_PATTERN = /#(\h)(\h)(\h)/
HSL_PATTERN = %r{^\s*hsl\(\s*(\d{1,3})\s*,
\s*(\d{1,3})%\s*,
\s*(\d{1,3})%\s*\)\s*$}x
HSLA_PATTERN = %r{^\s*hsla\(\s*(\d{1,3})\s*,
\s*(\d{1,3})%\s*,
\s*(\d{1,3})%\s*,
\s*(0|1|0\.\d+)\s*\)\s*$}x
attr_reader :red, :green, :blue, :alpha
def self.from_string(str)
case str
when RGB_PATTERN
new Regexp.last_match(1), Regexp.last_match(2), Regexp.last_match(3)
when RGB_PCT_PATTERN
array = [Regexp.last_match(1), Regexp.last_match(2), Regexp.last_match(3)]
new(*array.map { |e| Float(e) / 100 * 255 })
when RGBA_PATTERN
new Regexp.last_match(1), Regexp.last_match(2), Regexp.last_match(3), Regexp.last_match(4)
when RGBA_PCT_PATTERN
array = [Regexp.last_match(1), Regexp.last_match(2), Regexp.last_match(3)]
new(*array.map { |e| Float(e) / 100 * 255 } << Regexp.last_match(4))
when HEX_PATTERN
array = [Regexp.last_match(1), Regexp.last_match(2), Regexp.last_match(3)]
new(*array.map { |e| e.to_i(16) })
when HEX3_PATTERN
array = [Regexp.last_match(1), Regexp.last_match(2), Regexp.last_match(3)]
new(*array.map { |e| (e * 2).to_i(16) })
when HSL_PATTERN, HSLA_PATTERN
from_hsl(Regexp.last_match(1), Regexp.last_match(2), Regexp.last_match(3), Regexp.last_match(4))
else
raise ArgumentError, "could not convert #{str.inspect} into color"
end
end
def self.from_hsl(h, s, l, a)
h = Float(h) / 360
s = Float(s) / 100
l = Float(l) / 100
a = Float(a || 1)
if s.zero?
r = l
g = r
b = r
else
luminocity2 = l < 0.5 ? l * (1 + s) : l + s - l * s
luminocity1 = 2 * l - luminocity2
r = hue_to_rgb(luminocity1, luminocity2, h + 1.0 / 3.0)
g = hue_to_rgb(luminocity1, luminocity2, h)
b = hue_to_rgb(luminocity1, luminocity2, h - 1.0 / 3.0)
end
new (r * 255).round, (g * 255).round, (b * 255).round, a
end
def self.hue_to_rgb(lum1, lum2, hue)
hue += 1 if hue < 0.0
hue -= 1 if hue > 1.0
if hue < 1.0 / 6.0
(lum1 + (lum2 - lum1) * 6.0 * hue)
elsif hue < 1.0 / 2.0
lum2
elsif hue < 2.0 / 3.0
lum1 + (lum2 - lum1) * ((2.0 / 3.0) - hue) * 6.0
else
lum1
end
end
def initialize(red, green, blue, alpha = 1)
@red = Integer(red)
@green = Integer(green)
@blue = Integer(blue)
@alpha = Float(alpha)
end
def ==(other)
return true if equal?(other)
return false unless other.is_a?(self.class)
[red, green, blue, alpha] == [other.red, other.green, other.blue, other.alpha]
end
alias_method :eql?, :==
def hash
[red, green, blue, alpha].hash ^ self.class.hash
end
def rgb
"rgb(#{red}, #{green}, #{blue})"
end
def rgba
a = alpha == 1 ? '1' : alpha
"rgba(#{red}, #{green}, #{blue}, #{a})"
end
def hex
format '#%02x%02x%02x', red, green, blue
end
end # Color
end # Support
end # WebDriver
end # Selenium
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