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class Prawn::SVG::Font
GENERIC_CSS_FONT_MAPPING = {
"serif" => "Times-Roman",
"sans-serif" => "Helvetica",
"cursive" => "Times-Roman",
"fantasy" => "Times-Roman",
"monospace" => "Courier"
}
attr_reader :name, :weight, :style
def self.weight_for_css_font_weight(weight)
case weight
when '100', '200', '300' then :light
when '400', '500', 'normal' then :normal
when '600' then :semibold
when '700', 'bold' then :bold
when '800' then :extrabold
when '900' then :black
end
end
def initialize(name, weight, style, font_registry: nil)
@font_registry = font_registry
unless font_registry.installed_fonts.key?(name)
# map generic font name to one of the built-in PDF fonts if not already mapped
name = GENERIC_CSS_FONT_MAPPING[name] || name
end
@name = font_registry.correctly_cased_font_name(name) || name
@weight = weight
@style = style
end
def installed?
subfamilies = @font_registry.installed_fonts[name]
!subfamilies.nil? && subfamilies.key?(subfamily)
end
# Construct a subfamily name, ensuring that the subfamily is a valid one for the font.
def subfamily
if subfamilies = @font_registry.installed_fonts[name]
if subfamilies.key?(subfamily_name)
subfamily_name
elsif subfamilies.key?(:normal)
:normal
else
subfamilies.keys.first
end
end
end
private
# Construct a subfamily name from the weight and style information.
# Note that this name might not actually exist in the font.
def subfamily_name
if weight == :normal && style
style
elsif weight || style
[weight, style].compact.join('_').to_sym
else
:normal
end
end
end
Version data entries
12 entries across 12 versions & 1 rubygems