Flexible scheme and URI for image derivatives

Tagging for CR update as a new api function hook_image_style_source_alter doesn't seem to be referenced

Also was previously tagged for IS update which may still need to happen

Did not test patch.

I hadn't seen this yet, it looks like the same use-case as 📌 Allow image style derivatives to use a separate stream wrapper Closed: duplicate except that would just allow the stream wrapper to be configured. 📌 Make css/js optimized assets path configurable Fixed shows what it looks like.

Oh, dear me, a major showstopper and nothing has changed for years. :-( That hook would be desperately needed, up to the latest 10.1 and more... What could we do to make it happen ASAP?

For those who happen to be in my shoes: create a route subscriber and alter the route `image.style_private` to your own controller. Copy `Drupal\image\Controller\ImageStyleDownloadController\deliver()` to it and modify it to either do something entirely different, or probably just handle your own case and call `parent:.deliver()` to get the original behavior.

@djg_tram - I can managed to get the derived image written to the public filesystem, but how do I tell Drupal to use the public URL for this image, rather than the private /system/files/... one?

@fonant, if you use the patch and the hook, there is no need to do anything else. The uri of the image is changed for image style, so if it is public then the url will be for public scheme.

@a.dmitriiev thanks, I was wondering how @djg_tram had managed with his method.

I now have this working with the patch and a custom module with a hook. Needs a bit more work and some tidying before I post it here.

Now that 🐛 Image derivative generation does not work if effect "Convert" in use and file stored in private filesystem Fixed patch in #101 no longer applies

Rerolled 101 to apply to Drupal 10.2.x with the commit, 🐛 Image derivative generation does not work if effect "Convert" in use and file stored in private filesystem Fixed which causes the conflict.

I am testing it.
the uri has changed.
but i can't seem to get the image_style with the new public uri to be generated.
Should I add code to the hook to generate the image style

Drush cr does not seem to be doing it

I have the patch and this hook in a custom module.

/**
 * Implements hook_image_style_uri_alter().
 */
function MY_MODULE_image_style_uri_alter(&$uri, array $context) {
  $image_style_name = $context['image_style']->id();
  if (in_array($image_style_name, ['watermarked', 'watermarked_other'])) {
    $path = $context['path'];
    // Low resolution, watermarked images are available in the public readable
    // stream wrapper.
    $uri = "public://styles/$image_style_name/public/$path";
  }
}

Rerolled for Drupal 10.3.x