[Ruby on Rails]RMagickのMagick::Drawにfontを追加する方法

まずはfont追加を補うメソッドを追加

module Magick
class Draw
def font(name)
primitive "font '#{name}'"
end
def font_family(name)
primitive "font_family '#{name}'"
end
end
end

module Magick

class Draw

def font(name)

primitive "font '#{name}'"

end

def font_family(name)

primitive "font_family '#{name}'"

end

あとは普通にMagick::Drawのインスタンスメソッドとしてfontを使用すれば完了

draw = Magick::Draw.new
draw.annotate(img, 0, 0, 0, 0, 'LGTM') do
self.font        = Rails.root.join('app', 'assets', 'fonts', 'PalanquinDark-Bold.ttf').to_s
self.font_family = "PalanquinDark-Bold"
self.fill        = 'white'
self.stroke      = 'transparent'
self.pointsize   = pointsize
self.gravity     = Magick::CenterGravity
end

draw = Magick::Draw.new

draw.annotate(img, 0, 0, 0, 0, 'LGTM') do

self.font = Rails.root.join('app', 'assets', 'fonts', 'PalanquinDark-Bold.ttf').to_s

self.font_family = "PalanquinDark-Bold"

self.fill = 'white'

self.stroke = 'transparent'

self.pointsize = pointsize

self.gravity = Magick::CenterGravity

end

関連