Module ChunkyPNG::Canvas::DataUrlImporting
In: lib/chunky_png/canvas/data_url_importing.rb

Methods to import a canvas from a PNG data URL.

Methods

Public Instance methods

Imports a canvas from a PNG data URL. @param [String] string The data URL string to load from. @return [Canvas] The imported canvas. @raise ChunkyPNG::SignatureMismatch if the provides string is not a properly

   formatted PNG data URL (i.e. it should start with "data:image/png;base64,")

[Source]

    # File lib/chunky_png/canvas/data_url_importing.rb, line 12
12:       def from_data_url(string)
13:         if string =~ %r[^data:image/png;base64,((?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=)?)$]
14:           from_blob($1.unpack('m').first)
15:         else
16:           raise SignatureMismatch, "The string was not a properly formatted data URL for a PNG image."
17:         end
18:       end

[Validate]