How to set focusArea for only one specific ctype? - typo3

Question

I want to set different focus areas (cropVariants) for different content elements.
I found a solution for this here: https://docs.typo3.org/typo3cms/extensions/core/8.7/Changelog/8.6/Feature-75880-ImplementMultipleCroppingVariantsInImageManipulationTool.html
This works for the standard ctypes like textmedia but not for my own content element. Does anybody have a idea what the problem could be?

Answer 1

As I found out via Slack channel you can achieve that by overriding TCA as follows:
<?php
$originalTtContent = $GLOBALS['TCA']['tt_content'];
$overridesForTtContent = [
'types' => [
'ENTER_YOUR_CTYPE' => [
'columnsOverrides' => [
'ENTER_YOUR_IMAGE_FIELD' => [
'config' => [
'overrideChildTca' => [
'columns' => [
'crop' => [
'config' => [
'cropVariants' => [
'CROPVARIANT_TO_DISABLE' => [
'disabled' => true,
],
'YOUR_NEW_CROPVARIANT' => [
'title' => 'YOUR_NEW_CROPVARIANT',
'allowedAspectRatios' => [
'1:1' => [
'title' => 'Square',
'value' => 1 / 1
],
],
'selectedRatio' => '1:1',
'cropArea' => [
'x' => 0.0,
'y' => 0.0,
'width' => 1.0,
'height' => 1.0,
],
],
],
],
],
]
]
]
]
]
]
]
];
$GLOBALS['TCA']['tt_content'] = array_merge_recursive($originalTtContent, $overridesForTtContent);
Thanks to #kevin-appelt!