91 lines
2.2 KiB
Ruby
91 lines
2.2 KiB
Ruby
module ThemeHelper
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ATTRIBUTE_MAP = {
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'primary_color' => 'primary',
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'primary_text' => 'primary-text',
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'danger_color' => 'danger',
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'danger_text' => 'danger-text',
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'warning_color' => 'warning',
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'warning_text' => 'warning-text',
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'info_color' => 'info',
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'info_text' => 'info-text',
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'success_color' => 'success',
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'success_text' => 'success-text',
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'dark_color' => 'dark',
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'dark_text' => 'dark-text',
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'light_color' => 'light',
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'light_text' => 'light-text',
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'raised_background' => 'raised-bg',
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'raised_accent' => 'raised-accent',
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'background_color' => 'background',
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'body_text' => 'body-text',
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'input_color' => 'input-bg',
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'input_text' => 'input-text',
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'muted_text' => 'muted-text'
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}.freeze
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def render_theme
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theme = get_active_theme
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return unless theme
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body = ":root {\n"
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theme.attributes.each do |k, v|
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next unless ATTRIBUTE_MAP.key?(k)
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if k.include? "text"
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hex = get_hex_color_from_theme_value(v)
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body += "\t--#{ATTRIBUTE_MAP[k]}: #{get_decimal_triplet_from_hex(hex)};\n"
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else
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body += "\t--#{ATTRIBUTE_MAP[k]}: ##{get_hex_color_from_theme_value(v)};\n"
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end
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end
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body += "\t--turbolinks-progress-color: ##{lighten(theme.primary_color)}\n"
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body += "}"
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content_tag(:style, body)
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end
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def get_active_theme
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if @user&.theme
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if user_signed_in?
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if current_user&.show_foreign_themes?
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@user.theme
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else
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current_user&.theme
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end
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else
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@user.theme
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end
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elsif current_user&.theme
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current_user.theme
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end
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end
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def get_hex_color_from_theme_value(value)
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('0000000' + value.to_s(16))[-6, 6]
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end
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def get_decimal_triplet_from_hex(value)
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hexes = value.split(/(.{2})/).reject { |c| c.empty? }
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hexes.map(&:hex).join(", ")
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end
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def rgb_values_from_hex(value)
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[
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(value & 0xFF0000) >> 16, # R
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(value & 0x00FF00) >> 8, # G
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value & 0x0000FF # B
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]
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end
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def rgb_to_hex(rgb_values)
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rgb_values.map.with_index { |v, i| v << (2 - i) * 8 }.reduce(&:+).to_s(16)
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end
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def lighten(value, amount = 0.25)
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rgb_to_hex(rgb_values_from_hex(value).map { |v| [(v + 255 * amount).round, 255].min })
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end
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end
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