This changeset adds the capability for core media uploads to generate sub sized images in more than a single mime type. The output formats for each mime type can be controlled through a filter. WebP is used as an additional output format for JPEG images by default to improve front end performance.
When generating additional mime types, only images which are smaller than the respective original are retained. By default, additional mime type images are only generated for the built-in core image sizes and any custom sizes that have opted in.
Image meta is updated with a new 'sources' array containing file details for each mime type. Each image size in the 'sizes' array also gets a new 'sources' array that contains the image file details for each mime type.
This change also increases image upload retries to accommodate additional image sizes. It also adds a `$mime_type` parameter to the `wp_get_missing_image_subsizes` function and filter.
This change adds three new filters to enable full control of secondary mime image generation and output:
* A new filter `wp_image_sizes_with_additional_mime_type_support` that filters the sizes that support secondary mime type output. Developers can use this to control the output of additional mime type sub-sized images on a per size basis.
* A new filter `wp_upload_image_mime_transforms` that filters the output mime types for a given input mime type. Developers can use this to control generation of additional mime types for a given input mime type or even override the original mime type.
* A new filter `wp_content_image_mimes` which controls image mime type output selection and order for frontend content. Developers can use this to control the mime type output preference order for content images. Content images inserted from the media library will use the available image versions based on the order from this filter.
Thanks to the many contributors who helped develop, test and give feedback on this feature.
A haiku to summarize:
Upload a JPEG
Images of all sizes
Output as WebPs
Props flixos90, MatthiasReinholz, studiolxv, markhowellsmead, eatingrules, pbiron, mukesh27, joegrainger, mehulkaklotar, tweetythierry, akshitsethi, peterwilsoncc, eugenemanuilov, mitogh, shetheliving, clarkeemily, codekraft, mikeschroder, clorith, kasparsd, spacedmonkey, trevorpfromsandee, jb510, scofennellgmailcom, seedsca, cagsmith, karinclimber, dainemawer, baxbridge, grapplerulrich, sobatkras, chynnabenton, tonylocalword, barneydavey, kwillmorth, garymatthews919, olliejones, imarkinteractive, jeffpaul, feastdesignco, webbeetle, masteradhoc.
See #55443.
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Includes:
* Documenting the returned array using hash notation.
* Adding a `@since` note for the `$filesize` value being included in the returned array.
This affects:
* `wp_generate_attachment_metadata()`
* `wp_get_attachment_metadata()`
* `WP_Image_Editor::save()`
* `WP_Image_Editor_GD::save()` and `::_save()`
* `WP_Image_Editor_Imagick::save()` and `::_save()`
Follow-up to [22094], [22619], [52837], [53546].
See #55646.
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While using reserved PHP keywords as parameter name labels is allowed, in the context of function calls using named parameters in PHP 8.0+, this will easily lead to confusion. To avoid that, it is recommended not to use reserved keywords as function parameter names.
This commit renames the `$function` parameter to `$callback` in `WP_Image_Editor::make_image()`.
Follow-up to [52946], [52996], [52997], [52998], [53003], [53014], [53029], [53039], [53116], [53117], [53137], [53174], [53184], [53185], [53192], [53193], [53198], [53203], [53207], [53215], [53216], [53220], [53230], [53232], [53236], [53239], [53240], [53242], [53243], [53245], [53246], [53257], [53269], [53270].
Props jrf, aristath, poena, justinahinon, SergeyBiryukov.
See #55327.
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Renames the first parameter in `WP_Image_Editor_GD::save()` to match the parent's method signature.
Why? PHP 8 introduces the ability to pass named arguments to function/method calls. This means the child and parent method signatures (i.e. parameter names) need to match.
Adds @since to clearly specify why the change happened.
Adds parameter descriptions to parent and both child classes.
Follow-up to [22094], [22619], [30681].
Props jrf, hellofromTonya, sergeybiryukov, azaozz, desrosj, johnbillion.
See #51553.
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In [51422], a few specific edge cases were detailed so that developers using the hook were aware of known pitfalls.
These edge cases have been fixed in 5.8.1 through [51653] and [51704], so the documentation is no longer necessary.
Props azaozz, audrasjb.
Fixes#53955.
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More testing has revealed that the `image_editor_output_format` filter has some interesting edge cases that developers should be aware of when electing to use this filter (see #53667 and #53668).
Because this is a new filter that was intended to be used for experimenting with different ways to handle generating image sizes and has not yet been adopted in the wild, expanding the inline documentation is an acceptable temporary solution while these edge cases are explored further and addressed.
Props mikeschroder, antpb, desrosj, adamsilverstein, ianmjones.
See #5366, #53668, #35725.
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* Update the filter DocBlock per the documentation standards.
* Use a shorter variable name for consistency with the surrounding code.
* Delete the test file before performing assertions to avoid leftovers in case the test fails.
Follow-up to [50943].
See #52867.
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This change introduces the `image_editor_output_format` filter, which fires as sub size images are generated allowing to define a default image MIME type for those items.
Props adamsilverstein, williampatton, spacedmonkey, mikeschroder, hellofromTonya, justinahinon, Boniu91, antpb, SergeyBiryukov.
Fixes#52867.
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Since `WP_Image_Editor`'s introduction, stream wrappers have functioned in `WP_Image_Editor_GD`, but haven't been properly supported in `WP_Image_Editor_Imagick`.
- Detects stream wrappers and uses `file_put_contents()` along with `Imagick::read/getImageBlob()` for handling when necessary.
- Introduces private method, `WP_Image_Editor_Imagick::write_image` to handle detection and proper saving.
- Introduces `WP_Test_Stream` class for testing stream wrappers, along with new tests for Imagick's stream handling and a stream filename test.
Adds requirement for `Imagick::readImageBlob()`, available in Imagick >= 2.0.0, which aligns with the current requirement of Imagick >= 2.2.0.
Props p00ya, calin, joemcgill, pputzer, jimyaghi, mikeschroder.
Fixes#42663.
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This tag has been used in the past, but should no longer be used. Just using the `static` keyword in code is enough for PhpDocumentor on PHP5+ to recognize static variables and methods, and PhpDocumentor will mark them as static.
Props birgire.
See #42803.
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Prior to about 2013, many class methods lacked even access modifiers which made the `@access` notations that much more useful. Now that we've gotten to a point where the codebase is more mature from a maintenance perspective and we can finally remove these notations. Notable exceptions to this change include standalone functions notated as private as well as some classes still considered to represent "private" APIs.
See #41452.
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Also use 'back-compat' in some inline comments where backward compatibility is the subject and shorthand feels more natural.
Note: 'backwards compatibility/compatibile' can also be considered correct, though it's primary seen in regular use in British English.
Props ocean90.
Fixes#36835.
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