Class: DerivedImages::FormatSupport

Inherits:
Object
  • Object
show all
Defined in:
lib/derived_images/format_support.rb

Overview

A helper class to test for library support for different image formats.

Constant Summary collapse

KNOWN_FORMATS = 
%w[bmp gif jpg png webp avif heic jp2 jxl].freeze

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(processor = DerivedImages.config.processor) ⇒ FormatSupport

Returns a new instance of FormatSupport.



8
9
10
 
# File 'lib/derived_images/format_support.rb', line 8

def initialize(processor = DerivedImages.config.processor)
  @processor = processor
end

Class Method Details

.table(processor) ⇒ Object 



29
30
31
32
33
34
35
36
37
 
# File 'lib/derived_images/format_support.rb', line 29

def self.table(processor)
  instance = new(processor)
  %w[BMP GIF JPEG PNG TIFF WebP].map { [_1, true] }.tap do |table|
    table << ['AVIF', instance.avif?]
    table << ['HEIC', instance.heic?]
    table << ['JPEG 2000', instance.jpeg_2000?]
    table << ['JPEG XL', instance.jpeg_xl?]
  end
end

Instance Method Details

#supports?(format) ⇒ Boolean

Returns:

  • (Boolean) 


19
20
21
22
23
24
25
26
27
 
# File 'lib/derived_images/format_support.rb', line 19

def supports?(format)
  if processor == :vips
    vips.include?(format)
  elsif processor == :mini_magick
    magick.include?(format)
  else
    raise "Unknown processor #{processor}"
  end
end