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openproject/app/helpers/colors_helper.rb

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#-- encoding: UTF-8
#-- copyright
# OpenProject is a project management system.
# Copyright (C) 2012-2018 the OpenProject Foundation (OPF)
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License version 3.
#
# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
# Copyright (C) 2006-2017 Jean-Philippe Lang
# Copyright (C) 2010-2013 the ChiliProject Team
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# See docs/COPYRIGHT.rdoc for more details.
#++
module ColorsHelper
def options_for_colors(colored_thing, default_label: I18n.t('colors.label_no_color'), default_color: '')
s = content_tag(:option, default_label, value: default_color)
Color.find_each do |c|
options = {}
options[:value] = c.id
options[:data] = {
color: c.hexcode,
bright: c.bright?,
background: c.contrasting_color(light_color: 'transparent')
}
options[:selected] = true if c.id == colored_thing.color_id
s << content_tag(:option, c.name, options)
end
s
end
def darken_color(hex_color, amount = 0.4)
hex_color = hex_color.delete('#')
rgb = hex_color.scan(/../).map(&:hex)
rgb[0] = (rgb[0].to_i * amount).round
rgb[1] = (rgb[1].to_i * amount).round
rgb[2] = (rgb[2].to_i * amount).round
"#%02x%02x%02x" % rgb
end
def colored_text(color)
background = color.contrasting_color(dark_color: '#333', light_color: 'transparent')
style = "background-color: #{background}; color: #{color.hexcode}"
content_tag(:span, color.hexcode, class: 'color--text-preview', style: style)
end
def resource_color_css(name, scope)
scope.includes(:color).find_each do |entry|
color = entry.color
if color.nil?
concat ".__hl_dot_#{name}_#{entry.id}::before { display: none }\n"
next
end
styles = color.color_styles
inline_style = styles.map { |k,v| "#{k}:#{v} !important"}.join(';')
row_style = "background-color: #{color.hexcode} !important;"
border_color = color.bright? ? '#555555' : color.hexcode
concat ".__hl_inl_#{name}_#{entry.id} { #{inline_style}; }\n"
concat ".__hl_dot_#{name}_#{entry.id}::before { #{inline_style}; border-color: #{border_color}; }\n"
concat ".__hl_row_#{name}_#{entry.id} { #{row_style}; }\n"
# Mark color as bright through CSS variable
# so it can be used to add a separate -bright class
unless color.bright?
concat ":root { --hl-#{name}-#{entry.id}-dark: #{styles[:color]} }\n"
end
end
end
def icon_for_color(color, options = {})
return unless color
options.merge! class: 'color--preview ' + options[:class].to_s,
title: color.name,
style: "background-color: #{color.hexcode};" + options[:style].to_s
content_tag(:span, ' ', options)
end
end