46 lines
1.6 KiB
Ruby
46 lines
1.6 KiB
Ruby
# frozen_string_literal: true
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# BigBlueButton open source conferencing system - http://www.bigbluebutton.org/.
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#
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# Copyright (c) 2018 BigBlueButton Inc. and by respective authors (see below).
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#
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# This program is free software; you can redistribute it and/or modify it under the
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# terms of the GNU Lesser General Public License as published by the Free Software
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# Foundation; either version 3.0 of the License, or (at your option) any later
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# version.
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#
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# BigBlueButton is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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# PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License along
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# with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
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module Themer
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extend ActiveSupport::Concern
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# Lightens a color by 40%
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def color_lighten(color)
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# Uses the built in Sass Engine to lighten the color
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generate_sass("lighten", color, "40%")
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end
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# Darkens a color by 10%
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def color_darken(color)
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# Uses the built in Sass Engine to darken the color
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generate_sass("darken", color, "10%")
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end
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private
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def generate_sass(action, color, percentage)
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dummy_scss = "h1 { color: $#{action}; }"
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compiled = SassC::Engine.new("$#{action}:#{action}(#{color}, #{percentage});" + dummy_scss, syntax: :scss).render
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string_locater = 'color: '
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color_start = compiled.index(string_locater) + string_locater.length
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compiled[color_start..color_start + 6]
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end
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end
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