Mastodon/app/helpers/theme_helper.rb

94 lines
2.8 KiB
Ruby

# frozen_string_literal: true
module ThemeHelper
def javascript_inline_tag(path)
entry = InlineScriptManager.instance.file(path)
# Only add hash if we don't allow arbitrary includes already, otherwise it's going
# to break the React Tools browser extension or other inline scripts
unless Rails.env.development? && request.content_security_policy.dup.script_src.include?("'unsafe-inline'")
request.content_security_policy = request.content_security_policy.clone.tap do |policy|
values = policy.script_src
values << "'sha256-#{entry[:digest]}'"
policy.script_src(*values)
end
end
content_tag(:script, entry[:contents], type: 'text/javascript')
end
def theme_style_tags(flavour_and_skin)
flavour, theme = flavour_and_skin
vite_stylesheet_tag "skins/#{flavour}/#{theme}", type: :virtual, media: 'all', crossorigin: 'anonymous'
end
def theme_color_tags(color_scheme)
case color_scheme
when 'auto'
''.html_safe.tap do |tags|
tags << tag.meta(name: 'theme-color', content: Themes::THEME_COLORS[:dark], media: '(prefers-color-scheme: dark)')
tags << tag.meta(name: 'theme-color', content: Themes::THEME_COLORS[:light], media: '(prefers-color-scheme: light)')
end
when 'light'
tag.meta name: 'theme-color', content: Themes::THEME_COLORS[:light]
when 'dark'
tag.meta name: 'theme-color', content: Themes::THEME_COLORS[:dark]
end
end
def custom_stylesheet
return if active_custom_stylesheet.blank?
stylesheet_link_tag(
custom_css_path(active_custom_stylesheet),
host: root_url,
media: :all,
skip_pipeline: true
)
end
def current_flavour
[current_user&.setting_flavour, Setting.flavour, 'glitch', 'vanilla'].find { |flavour| Themes.instance.flavours.include?(flavour) }
end
def current_skin
skins = Themes.instance.skins_for(current_flavour)
[current_user&.setting_skin, Setting.skin, 'default'].find { |skin| skins.include?(skin) }
end
def current_theme
# NOTE: this is slightly different from upstream, as it's a derived value used
# for the sole purpose of pointing to the appropriate stylesheet pack
[current_flavour, current_skin]
end
def color_scheme
current_user&.setting_color_scheme || 'auto'
end
def contrast
current_user&.setting_contrast || 'auto'
end
def page_color_scheme
content_for(:force_color_scheme).presence || color_scheme
end
private
def active_custom_stylesheet
return if cached_custom_css_digest.blank?
[:custom, cached_custom_css_digest.to_s.first(8)]
.compact_blank
.join('-')
end
def cached_custom_css_digest
Rails.cache.fetch(:setting_digest_custom_css) do
Setting.custom_css&.then { |content| Digest::SHA256.hexdigest(content) }
end
end
end