impress/app/views/swf_assets/show.html.haml

!!! 5
%html
  %head
    %meta{charset: "utf-8"}
    %meta{name: "viewport", content: "width=device-width, initial-scale=1"}
    %title
      Embed for Asset ##{@swf_asset.id} | #{t "app_name"}
    %link{href: image_path("favicon.png"), rel: "icon"}

    -# Load the stylesheet first, because displaying things correctly is the
    -# actual most essential thing.
    = stylesheet_link_tag "swf_assets/show", debug: false

    -# NOTE: For all these assets, the Content-Security-Policy doesn't account
    -# for asset debug mode, so let's just opt out of it with `debug: false`!
    - if @swf_asset.canvas_movie?
      -# This is optional, but preloading the sprites can help us from having
      -# to wait on all the other JS to load and set up before we start!
      - @swf_asset.canvas_movie_sprite_urls.each do |sprite_url|
        %link{rel: "preload", href: sprite_url, as: "image", crossorigin: "anonymous"}

      -# Load the scripts: EaselJS libs first, then the asset's "library" file,
      -# then our page script that starts the movie.
      = javascript_include_tag "easeljs.min", defer: true, debug: false
      = javascript_include_tag "tweenjs.min", defer: true, debug: false
      = javascript_include_tag @swf_asset.canvas_movie_library_url, defer: true,
        id: "canvas-movie-library"
      = javascript_include_tag "swf_assets/show", defer: true, debug: false
  %body
    - if @swf_asset.canvas_movie?
      %canvas#asset-canvas
        -# Show a fallback image, for users with JS disabled. Lazy-load it, so
        -# the browser won't bother to load it if it's not used.
        = image_tag @swf_asset.image_url, id: "fallback", alt: "", loading: "lazy"
    - else
      = image_tag @swf_asset.image_url, alt: "", id: "asset-image"