Class: Lipstick::Images::LogoOnlyEmailBanner

Inherits:
Object
  • Object
show all
Defined in:
lib/lipstick/images/logo_only_email_banner.rb

Overview

Creates a logo-only email banner, with two elements.

  1. Logo, centered vertically and horizontally within the image.

  2. Environment string, stamped across the logo.

The math here seemed like it would be a lot simpler than the EmailBanner class, but then I went and made it all confusing by bringing trigonometry into it. I promise there was a good reason for doing it.

Instance Method Summary collapse

Constructor Details

#initialize(image:, environment:, background_color:) ⇒ LogoOnlyEmailBanner

Returns a new instance of LogoOnlyEmailBanner.



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# File 'lib/lipstick/images/logo_only_email_banner.rb', line 14

def initialize(image:, environment:, background_color:)
  require 'rmagick'

  @environment = environment.upcase
  @image = image
  @background_color = background_color
end

Instance Method Details

#to_png ⇒ Object 



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# File 'lib/lipstick/images/logo_only_email_banner.rb', line 22

def to_png
  bgcolor = @background_color

  canvas = Magick::ImageList.new
  canvas.new_image(WIDTH, HEIGHT) do |f|
    f.format = 'PNG'
    f.background_color = bgcolor
  end

  canvas.composite!(, logo_x, logo_y, Magick::SrcOverCompositeOp)

  annotate_environment(canvas)

  canvas.to_blob
end