discourse/lib/stylesheet/importer.rb

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# frozen_string_literal: true
require_dependency 'global_path'
module Stylesheet
class Importer
include GlobalPath
THEME_TARGETS ||= %w{embedded_theme mobile_theme desktop_theme}
def self.plugin_assets
@plugin_assets ||= {}
end
def self.register_imports!
Discourse.plugins.each do |plugin|
plugin_directory_name = plugin.directory_name
["", "mobile", "desktop"].each do |type|
asset_name = type.present? ? "#{plugin_directory_name}_#{type}" : plugin_directory_name
stylesheets = type.present? ? DiscoursePluginRegistry.send("#{type}_stylesheets") : DiscoursePluginRegistry.stylesheets
plugin_assets[asset_name] = stylesheets[plugin_directory_name] if plugin_directory_name.present?
end
end
end
register_imports!
def font
body_font = DiscourseFonts.fonts.find { |f| f[:key] == SiteSetting.base_font }
heading_font = DiscourseFonts.fonts.find { |f| f[:key] == SiteSetting.heading_font }
contents = +""
if body_font.present?
contents << <<~EOF
#{font_css(body_font)}
:root {
--font-family: #{body_font[:stack]};
}
EOF
end
if heading_font.present?
contents << <<~EOF
#{font_css(heading_font)}
:root {
--heading-font-family: #{heading_font[:stack]};
}
EOF
end
contents
end
def wizard_fonts
contents = +""
DiscourseFonts.fonts.each do |font|
if font[:key] == "system"
# Overwrite font definition because the preview canvases in the wizard require explicit @font-face definitions.
# uses same technique as https://github.com/jonathantneal/system-font-css
font[:variants] = [
{ src: 'local(".SFNS-Regular"), local(".SFNSText-Regular"), local(".HelveticaNeueDeskInterface-Regular"), local(".LucidaGrandeUI"), local("Segoe UI"), local("Ubuntu"), local("Roboto-Regular"), local("DroidSans"), local("Tahoma")', weight: 400 },
{ src: 'local(".SFNS-Bold"), local(".SFNSText-Bold"), local(".HelveticaNeueDeskInterface-Bold"), local(".LucidaGrandeUI"), local("Segoe UI Bold"), local("Ubuntu Bold"), local("Roboto-Bold"), local("DroidSans-Bold"), local("Tahoma Bold")', weight: 700 }
]
end
contents << font_css(font)
contents << <<~EOF
.body-font-#{font[:key].tr("_", "-")} {
font-family: #{font[:stack]};
}
.heading-font-#{font[:key].tr("_", "-")} h2 {
font-family: #{font[:stack]};
}
EOF
end
contents
end
def category_backgrounds
contents = +""
Category.where('uploaded_background_id IS NOT NULL').each do |c|
contents << category_css(c) if c.uploaded_background&.url.present?
end
contents
end
def import_color_definitions
contents = +""
DiscoursePluginRegistry.color_definition_stylesheets.each do |name, path|
contents << "\n\n// Color definitions from #{name}\n\n"
contents << File.read(path.to_s)
contents << "\n\n"
end
theme_id = @theme_id || SiteSetting.default_theme_id
resolved_ids = Theme.transform_ids(theme_id)
if resolved_ids
theme = Theme.find_by_id(theme_id)
contents << theme&.scss_variables.to_s
Theme.list_baked_fields(resolved_ids, :common, :color_definitions).each do |field|
contents << "\n\n// Color definitions from #{field.theme.name}\n\n"
if field.theme_id == theme.id
contents << field.value
else
contents << field.compiled_css(prepended_scss)
end
contents << "\n\n"
end
end
contents
end
def import_wcag_overrides
if @color_scheme_id && ColorScheme.find_by_id(@color_scheme_id)&.is_wcag?
return "@import \"wcag\";"
end
""
end
def color_variables
contents = +""
if @color_scheme_id
colors = begin
ColorScheme.find(@color_scheme_id).resolved_colors
rescue
ColorScheme.base_colors
end
elsif (@theme_id && !theme.component)
colors = theme&.color_scheme&.resolved_colors || ColorScheme.base_colors
else
# this is a slightly ugly backwards compatibility fix,
# we shouldn't be using the default theme color scheme for components
# (most components use CSS custom properties which work fine without this)
colors = Theme.find_by_id(SiteSetting.default_theme_id)&.color_scheme&.resolved_colors ||
ColorScheme.base_colors
end
colors.each do |n, hex|
contents << "$#{n}: ##{hex} !default; "
end
contents
end
def public_image_path
image_path = UrlHelper.absolute("#{Discourse.base_path}/images")
"$public_image_path: \"#{image_path}\"; "
end
def prepended_scss
"#{color_variables} #{public_image_path} @import \"common/foundation/variables\"; @import \"common/foundation/mixins\"; "
end
def initialize(options)
@theme = options[:theme]
@theme_id = options[:theme_id]
@color_scheme_id = options[:color_scheme_id]
if @theme && !@theme_id
# make up an id so other stuff does not bail out
@theme_id = @theme.id || -1
end
end
def theme_import(target)
2021-06-17 22:16:26 -04:00
return "" if !@theme_id
attr = target == :embedded_theme ? :embedded_scss : :scss
target = target.to_s.gsub("_theme", "").to_sym
contents = +""
fields = theme.list_baked_fields(target, attr)
fields.map do |field|
value = field.value
if value.present?
contents << <<~COMMENT
// Theme: #{field.theme.name}
// Target: #{field.target_name} #{field.name}
// Last Edited: #{field.updated_at}
COMMENT
contents << value
end
end
contents
end
def theme
unless @theme
@theme = (@theme_id && Theme.find(@theme_id)) || :nil
end
@theme == :nil ? nil : @theme
end
def category_css(category)
full_slug = category.full_slug.split("-")[0..-2].join("-")
"body.category-#{full_slug} { background-image: url(#{upload_cdn_path(category.uploaded_background.url)}) }\n"
end
def font_css(font)
contents = +""
if font[:variants].present?
fonts_dir = UrlHelper.absolute("#{Discourse.base_path}/fonts")
font[:variants].each do |variant|
src = variant[:src] ? variant[:src] : "url(\"#{fonts_dir}/#{variant[:filename]}?v=#{DiscourseFonts::VERSION}\") format(\"#{variant[:format]}\")"
contents << <<~EOF
@font-face {
font-family: #{font[:name]};
src: #{src};
font-weight: #{variant[:weight]};
}
EOF
end
end
contents
end
end
end